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Date: Wed, 02 Dec 2009 17:36:45 +0800
From: Ning Zong <zongning@huawei.com>
In-reply-to: <200911271012084689269@chinamobile.com>
To: 'zhangyunfei' <zhangyunfei@chinamobile.com>, ppsp@ietf.org
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Subject: Re: [ppsp] charter discussion
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Hi, Folks,

 

Overall I support this charter. I have some further suggestions on the
charter. Please see below:

 

.         The work planned for the PPSP WG is distinct from, but requires
close participation with, work in other IETF WGs, particularly P2PSIP, ALTO
and MMUSIC. The PPSP WG assumes that it cannot modify baseline P2PSIP, ALTO,
and MMUSIC behaviors. If PPSP determines that extensions to P2PSIP, ALTO,
MMUSIC are needed, PPSP will seek to define such extensions and present to
the respective working groups.

[update]

>> The work planned for the PPSP WG is distinct from, but requires close
participation with, work in other IETF WGs, particularly P2PSIP, ALTO and
MMUSIC. The PPSP WG assumes that it cannot modify baseline of other IETF
works. If PPSP determines that extensions to other IETF works are needed,
PPSP will seek to define such extensions and present to the respective
working groups.

 

[new]

>> The design of PPSP will investigate various media coding mechanisms (e.g.
SVC, MDC) to incorporate their features into media description (e.g. chunk
description in peer protocol).

 

Any other suggestions and comments?

 

BR,

Ning Zong

 

  _____  

From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of
zhangyunfei
Sent: Friday, November 27, 2009 10:12 AM
To: ppsp@ietf.org
Subject: [ppsp] charter discussion

 

Dear all,

   According to the consensus in IETF 76 PPSP BOF, it's necessary to update
the charter with the comments received both in the mailing list and in the
meeting into consideration.

   Any modification suggestion on the charter is high appreciated. If there
are more comments for the charter, please let us know so that we can make it
better.

 

BR

Yunfei

 

  _____  

zhangyunfei

2009-11-27


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style=3D'font-size:9.0pt;font-family:Arial;color:navy'>Hi, =
Folks,<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D1 color=3Dnavy face=3DArial><span =
lang=3DEN-US
style=3D'font-size:9.0pt;font-family:Arial;color:navy'><o:p>&nbsp;</o:p><=
/span></font></p>

<p class=3DMsoNormal><font size=3D1 color=3Dnavy face=3DArial><span =
lang=3DEN-US
style=3D'font-size:9.0pt;font-family:Arial;color:navy'>Overall I support =
this
charter. I have some further suggestions on the charter. Please see =
below:<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D1 color=3Dnavy face=3DArial><span =
lang=3DEN-US
style=3D'font-size:9.0pt;font-family:Arial;color:navy'><o:p>&nbsp;</o:p><=
/span></font></p>

<p class=3DMsoNormal =
style=3D'margin-left:36.0pt;text-indent:-18.0pt;mso-list:l0 level1 =
lfo3'><a
name=3D"OLE_LINK1"><![if !supportLists]><font size=3D1 color=3Dnavy =
face=3D&#23435;&#20307;><span
lang=3DEN-US style=3D'font-size:9.0pt;color:navy'><span =
style=3D'mso-list:Ignore'>&#8226;<font
size=3D1 face=3D"Times New Roman"><span style=3D'font:7.0pt "Times New =
Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></font></span></span></font><![endif]><font size=3D1 color=3Dnavy
face=3DArial><span lang=3DEN-US =
style=3D'font-size:9.0pt;font-family:Arial;
color:navy'>The work planned for the PPSP WG is distinct from, but =
requires
close participation with, work in other IETF WGs, particularly P2PSIP, =
ALTO and
MMUSIC. The PPSP WG assumes that it cannot modify baseline P2PSIP, ALTO, =
and
MMUSIC behaviors. If PPSP determines that extensions to P2PSIP, ALTO, =
MMUSIC
are needed, PPSP will seek to define such extensions and present to the
respective working groups.</span></font></a><font size=3D1 color=3Dnavy =
face=3DArial><span
lang=3DEN-US =
style=3D'font-size:9.0pt;font-family:Arial;color:navy'><o:p></o:p></span>=
</font></p>

<p class=3DMsoNormal><font size=3D1 color=3Dnavy face=3DArial><span =
lang=3DEN-US
style=3D'font-size:9.0pt;font-family:Arial;color:navy'>[update]<o:p></o:p=
></span></font></p>

<p class=3DMsoNormal><font size=3D1 color=3Dnavy face=3DArial><span =
lang=3DEN-US
style=3D'font-size:9.0pt;font-family:Arial;color:navy'>&gt;&gt; The work =
planned
for the PPSP WG is distinct from, but requires close participation with, =
work
in other IETF WGs, particularly P2PSIP, ALTO and MMUSIC. The PPSP WG =
assumes
that it cannot modify baseline of other IETF works. If PPSP determines =
that
extensions to other IETF works are needed, PPSP will seek to define such
extensions and present to the respective working =
groups.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D1 color=3Dnavy face=3DArial><span =
lang=3DEN-US
style=3D'font-size:9.0pt;font-family:Arial;color:navy'><o:p>&nbsp;</o:p><=
/span></font></p>

<p class=3DMsoNormal><font size=3D1 color=3Dnavy face=3DArial><span =
lang=3DEN-US
style=3D'font-size:9.0pt;font-family:Arial;color:navy'>[new]<o:p></o:p></=
span></font></p>

<p class=3DMsoNormal><font size=3D1 color=3Dnavy face=3DArial><span =
lang=3DEN-US
style=3D'font-size:9.0pt;font-family:Arial;color:navy'>&gt;&gt; The =
design of
PPSP will investigate various media coding mechanisms (e.g. SVC, MDC) to
incorporate their features into media description (e.g. chunk =
description in
peer protocol).<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D1 color=3Dnavy face=3DArial><span =
lang=3DEN-US
style=3D'font-size:9.0pt;font-family:Arial;color:navy'><o:p>&nbsp;</o:p><=
/span></font></p>

<p class=3DMsoNormal><font size=3D1 color=3Dnavy face=3DArial><span =
lang=3DEN-US
style=3D'font-size:9.0pt;font-family:Arial;color:navy'>Any other =
suggestions and
comments?<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D1 color=3Dnavy face=3DArial><span =
lang=3DEN-US
style=3D'font-size:9.0pt;font-family:Arial;color:navy'><o:p>&nbsp;</o:p><=
/span></font></p>

<p class=3DMsoNormal><font size=3D1 color=3Dnavy face=3DArial><span =
lang=3DEN-US
style=3D'font-size:9.0pt;font-family:Arial;color:navy'>BR,<o:p></o:p></sp=
an></font></p>

<p class=3DMsoNormal><font size=3D1 color=3Dnavy face=3DArial><span =
lang=3DEN-US
style=3D'font-size:9.0pt;font-family:Arial;color:navy'>Ning =
Zong<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D1 color=3Dnavy face=3DArial><span =
lang=3DEN-US
style=3D'font-size:9.0pt;font-family:Arial;color:navy'><o:p>&nbsp;</o:p><=
/span></font></p>

<div class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><font =
size=3D3
face=3D&#23435;&#20307;><span lang=3DEN-US style=3D'font-size:12.0pt'>

<hr size=3D2 width=3D"100%" align=3Dcenter tabindex=3D-1>

</span></font></div>

<p class=3DMsoNormal><b><font size=3D2 face=3DTahoma><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</spa=
n></font></b><font
size=3D2 face=3DTahoma><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Tahoma'>
ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] <b><span =
style=3D'font-weight:
bold'>On Behalf Of </span></b>zhangyunfei<br>
<b><span style=3D'font-weight:bold'>Sent:</span></b> Friday, November =
27, 2009
10:12 AM<br>
<b><span style=3D'font-weight:bold'>To:</span></b> ppsp@ietf.org<br>
<b><span style=3D'font-weight:bold'>Subject:</span></b> [ppsp] charter =
discussion</span></font><span
lang=3DEN-US><o:p></o:p></span></p>

<p class=3DMsoNormal><font size=3D3 face=3D&#23435;&#20307;><span =
lang=3DEN-US
style=3D'font-size:12.0pt'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D3 face=3D&#23435;&#20307;><span =
lang=3DEN-US
style=3D'font-size:12.0pt'><!--[if gte vml 1]><v:shapetype =
id=3D"_x0000_t74"=20
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path=3D"m10860,2187c10451,1746,9529,1018,9015,730,7865,152,6685,,5415,,41=
75,152,2995,575,1967,1305,1150,2187,575,3222,242,4220,,5410,242,6560,575,=
7597l10860,21600,20995,7597v485,-1037,605,-2187,485,-3377c21115,3222,2042=
0,2187,19632,1305,18575,575,17425,152,16275,,15005,,13735,152,12705,730v-=
529,288,-1451,1016,-1845,1457xe">
 <v:stroke joinstyle=3D"miter" />
 <v:path gradientshapeok=3D"t" o:connecttype=3D"custom" =
o:connectlocs=3D"10860,2187;2928,10800;10860,21600;18672,10800"=20
  o:connectangles=3D"270,180,90,0" textboxrect=3D"5037,2277,16557,13677" =
/>
</v:shapetype><v:shape id=3D"DtsShapeName" o:spid=3D"_x0000_s2078" =
type=3D"#_x0000_t74"=20
 =
alt=3D"GE2G30DB@C@354BE@18EE013@G63@58D099&gt;888:B9b[72207!!!!!!BIHO@]{7=
2207!!!1@@51B401107DBC6C7D6Onsl`m/enu!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1!1"=20
 =
style=3D'position:absolute;margin-left:0;margin-top:0;width:.05pt;height:=
.05pt;
 z-index:1;visibility:hidden'>
 <w:anchorlock/>
</v:shape><![endif]--></span></font><font size=3D2 face=3DVerdana><span =
lang=3DEN-US
style=3D'font-size:10.0pt;font-family:Verdana'>Dear =
all,</span></font><span
lang=3DEN-US><o:p></o:p></span></p>

<div>

<p class=3DMsoNormal><font size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:
10.0pt;font-family:Verdana'>&nbsp;&nbsp; According to the consensus in =
IETF 76
PPSP BOF, it's necessary to update the charter&nbsp;with&nbsp;the =
comments
received both in the mailing list and in the meeting into =
consideration.</span></font><span
lang=3DEN-US><o:p></o:p></span></p>

</div>

<div>

<p class=3DMsoNormal><font size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:
10.0pt;font-family:Verdana'>&nbsp;&nbsp; Any modification suggestion on =
the
charter&nbsp;is high appreciated.&nbsp;If there are more comments for =
the
charter, please let us know so that we can make it =
better.</span></font><span
lang=3DEN-US><o:p></o:p></span></p>

</div>

<div>

<p class=3DMsoNormal><font size=3D3 face=3D&#23435;&#20307;><span =
lang=3DEN-US
style=3D'font-size:12.0pt'>&nbsp;<o:p></o:p></span></font></p>

</div>

<div>

<p class=3DMsoNormal><font size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:
10.0pt;font-family:Verdana'>BR</span></font><span =
lang=3DEN-US><o:p></o:p></span></p>

</div>

<div>

<p class=3DMsoNormal><font size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:
10.0pt;font-family:Verdana'>Yunfei</span></font><font =
face=3DVerdana><span
lang=3DEN-US style=3D'font-family:Verdana'><o:p></o:p></span></font></p>

</div>

<div>

<p class=3DMsoNormal><font size=3D3 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:
12.0pt;font-family:Verdana'>&nbsp;<o:p></o:p></span></font></p>

</div>

<div class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><font =
size=3D2
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>

<hr size=3D2 width=3D122 style=3D'width:91.5pt' align=3Dcenter>

</span></font></div>

<div>

<p class=3DMsoNormal><font size=3D2 color=3Dsilver face=3DVerdana><span =
lang=3DEN-US
style=3D'font-size:10.0pt;font-family:Verdana;color:silver'>zhangyunfei</=
span></font><font
color=3Dsilver face=3DVerdana><span lang=3DEN-US =
style=3D'font-family:Verdana;
color:silver'><o:p></o:p></span></font></p>

</div>

<div>

<p class=3DMsoNormal><st1:chsdate IsROCDate=3D"False" =
IsLunarDate=3D"False" Day=3D"27"
Month=3D"11" Year=3D"2009" w:st=3D"on"><font size=3D2 color=3Dsilver =
face=3DVerdana><span
 lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana;color:silver'>2009-11-27</s=
pan></font></st1:chsdate><font
face=3DVerdana><span lang=3DEN-US =
style=3D'font-family:Verdana'><o:p></o:p></span></font></p>

</div>

</div>

</body>

</html>

--Boundary_(ID_G5EBir5eU9mtlCobxqqhYw)--

From gonzalo.camarillo@ericsson.com  Wed Dec  2 11:54:01 2009
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Date: Wed, 02 Dec 2009 21:53:48 +0200
From: Gonzalo Camarillo <Gonzalo.Camarillo@ericsson.com>
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Subject: [ppsp] Minutes from the BOF
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Hi,

we have uploaded the draft minutes of our BOF meeting in Japan:

http://www.ietf.org/proceedings/09nov/minutes/ppsp.txt

Cheers,

Gonzalo


From albertojgc@gmail.com  Wed Dec  2 13:21:37 2009
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Hi all,

Just one comment.

I would generalize the following:

[new] The design of PPSP will investigate various media coding
mechanisms (e.g. SVC, MDC) to incorporate their features into media
description (e.g. chunk description in peer protocol).

According to the following:

[new] The design of PPSP will consider transmission of multiple
streams (layered media). This includes to investigate various media
coding mechanisms (e.g. SVC, MDC) to incorporate their features into
media description (e.g. chunk description in peer protocol).

This way, we don't focus only on media coding techniques and we leave
the door open for other approaches such as media synchronization
(audio, video, etc.).

BR,

-- 
Alberto Jose Gonzalez Cela
Universitat Politecnica de Catalunya / i2CAT Foundation

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Date: Thu, 10 Dec 2009 10:56:00 +0800
From: "zhangyunfei" <zhangyunfei@chinamobile.com>
To: "Ning Zong" <zongning@huawei.com>, "ppsp@ietf.org" <ppsp@ietf.org>
References: <004501ca7332$f6efa520$510ca40a@china.huawei.com>
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Subject: Re: [ppsp] charter discussion
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Date: Thu, 10 Dec 2009 11:39:55 +0800
From: "Y.J. Gu" <guyingjie@huawei.com>
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To: 'zhangyunfei' <zhangyunfei@chinamobile.com>, =?gb2312?B?J0FsYmVydG9fSm9z6V9Hb2564Wxlel9DZWxhJw==?= <albertojgc@gmail.com>, ppsp@ietf.org
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Subject: Re: [ppsp] charter discussion
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Hi,
I agree that research in media coding is meaningful in PPSP, as we have
discussed in the early posts.
However, transmission IMHO is out the scope of PPSP. The main aim of =
PPSP,
either Tracker protocol or peer protocol, is to help peers find where to =
get
(parts of )the stream.  The transmission, including synchronization, can =
be
guaranteed by other Protocol, e.g. RTSP. We don't restrict which =
protocol a
peer should use to get the stream, as long as both sides of the session =
come
to a consensus.=20
At this stage, I think we'd better not make the scope too wide and
amphibolous, except that there are evidences that transmission will =
impact
P2P streaming protocol.
Can anybody give some clues?
=20

Regards

Yingjie Gu

=20


  _____ =20

From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of
zhangyunfei
Sent: Thursday, December 10, 2009 11:08 AM
To: Alberto_Jos=E9_Gonz=E1lez_Cela; ppsp@ietf.org
Subject: Re: [ppsp] charter discussion


Hi Alberto,
   I agree that it's very important to think over media description with
media coding into consideration.But I suggest to modify the sentence as
follows:

[new]  The  design  of  PPSP  will  consider  transmission  of  multiple
streams  (layered  media).  This  includes  to  investigate  various  =
media
coding  mechanisms  (e.g.  SVC,  MDC)  to  incorporate  their  features
into
media  description  (e.g.  chunk  description  in  peer  protocol).
=20
[Update]
>>The  design  of  PPSP  will  consider  the senario of transmission  of
multiple=20
streams  (layered  media).  This  includes considering variou media
descriptions=20
(e.g. chunk description in peer protocol) after investigating different
media coding=20
mechanisms (e.g. SVC, MDC) to incorporate their features in the =
protocol.
=20
This way,we leave room for some other approches while keep the scope in =
the
signaling domain.
=20
BR
Yunfei
=20

  _____ =20

zhangyunfei
2009-12-10

  _____ =20

=B7=A2=BC=FE=C8=CB=A3=BA Alberto_Jos=E9_Gonz=E1lez_Cela
=B7=A2=CB=CD=CA=B1=BC=E4=A3=BA 2009-12-03 05:29:32
=CA=D5=BC=FE=C8=CB=A3=BA ppsp@ietf.org
=B3=AD=CB=CD=A3=BA=20
=D6=F7=CC=E2=A3=BA Re: [ppsp] charter discussion
=20

Hi  all,
=20
Just  one  comment.
=20
I  would  generalize  the  following:
=20
[new]  The  design  of  PPSP  will  investigate  various  media  coding
mechanisms  (e.g.  SVC,  MDC)  to  incorporate  their  features  into  =
media
description  (e.g.  chunk  description  in  peer  protocol).
=20
According  to  the  following:
=20
[new]  The  design  of  PPSP  will  consider  transmission  of  multiple
streams  (layered  media).  This  includes  to  investigate  various  =
media
coding  mechanisms  (e.g.  SVC,  MDC)  to  incorporate  their  features
into
media  description  (e.g.  chunk  description  in  peer  protocol).
=20
This  way,  we  don't  focus  only  on  media  coding  techniques  and  =
we
leave
the  door  open  for  other  approaches  such  as  media  =
synchronization
(audio,  video,  etc.).
=20
BR,
=20
-- =20
Alberto  Jose  Gonzalez  Cela
Universitat  Politecnica  de  Catalunya  /  i2CAT  Foundation
_______________________________________________
ppsp  mailing  list
ppsp@ietf.org
https://www.ietf.org/mailman/listinfo/ppsp


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<DIV dir=3Dltr align=3Dleft><SPAN class=3D424082103-10122009><FONT=20
face=3D"Times New Roman" color=3D#0000ff =
size=3D5>Hi,</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D424082103-10122009><FONT=20
face=3D"Times New Roman" color=3D#0000ff size=3D5>I agree that research =
in media=20
coding is meaningful in PPSP, as we have discussed in the early=20
posts.</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D424082103-10122009><FONT=20
face=3D"Times New Roman" color=3D#0000ff size=3D5>However, transmission =
IMHO is out=20
the scope of PPSP. The main aim of&nbsp;PPSP, either Tracker protocol=20
or&nbsp;peer protocol,&nbsp;is to help peers find where to get (parts of =
)the=20
stream. &nbsp;The transmission, including synchronization,&nbsp;can be=20
guaranteed by other Protocol, e.g. RTSP. We don't restrict which =
protocol a peer=20
should use to get the stream, as long as both sides of the =
session&nbsp;come to=20
a consensus.&nbsp;</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D424082103-10122009><FONT=20
face=3D"Times New Roman" color=3D#0000ff size=3D5>At this stage, I think =
we'd better=20
not make the scope too wide and amphibolous, except that there are =
evidences=20
that transmission will impact P2P streaming =
protocol.</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D424082103-10122009><FONT=20
face=3D"Times New Roman" color=3D#0000ff size=3D5>Can anybody give some=20
clues?</FONT></SPAN></DIV>
<DIV><FONT face=3D"Times New Roman" color=3D#0000ff =
size=3D5></FONT>&nbsp;</DIV>
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lang=3DEN-US><?xml:namespace prefix =3D o ns =3D=20
"urn:schemas-microsoft-com:office:office" /><o:p></o:p></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt" align=3Dleft><SPAN=20
style=3D"FONT-SIZE: 9pt; LINE-HEIGHT: 150%; FONT-FAMILY: =CB=CE=CC=E5; =
mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; =
mso-bidi-font-size: 10.0pt; mso-bidi-font-family: Arial"><FONT=20
size=3D4>Regards</FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt"></FONT><SPAN =
lang=3DEN-US=20
style=3D"FONT-SIZE: 9pt; LINE-HEIGHT: 150%; FONT-FAMILY: Arial; =
mso-bidi-font-size: 10.0pt"><FONT=20
size=3D4>Yingjie Gu</FONT></SPAN></P></DIV>
<DIV><FONT face=3D"Times New Roman" color=3D#0000ff =
size=3D5></FONT>&nbsp;</DIV><BR>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px =
solid; MARGIN-RIGHT: 0px">
  <DIV class=3DOutlookMessageHeader lang=3Dzh-cn dir=3Dltr align=3Dleft>
  <HR tabIndex=3D-1>
  <FONT face=3DTahoma size=3D2><B>From:</B> ppsp-bounces@ietf.org=20
  [mailto:ppsp-bounces@ietf.org] <B>On Behalf Of =
</B>zhangyunfei<BR><B>Sent:</B>=20
  Thursday, December 10, 2009 11:08 AM<BR><B>To:</B> =
Alberto_Jos=E9_Gonz=E1lez_Cela;=20
  ppsp@ietf.org<BR><B>Subject:</B> Re: [ppsp] charter=20
  discussion<BR></FONT><BR></DIV>
  <DIV></DIV>
  <DIV><FONT face=3DVerdana color=3D#0000ff size=3D2>Hi =
Alberto,</FONT></DIV>
  <DIV><FONT face=3DVerdana color=3D#0000ff size=3D2>&nbsp;&nbsp; =
I&nbsp;agree=20
  that&nbsp;it's very important to&nbsp;think over&nbsp;media =
description with=20
  media coding into consideration.But I suggest to modify the sentence =
as=20
  follows:</FONT></DIV>
  <DIV><FONT face=3DVerdana color=3D#0000ff size=3D2>
  <DIV>[new] &nbsp;The &nbsp;design &nbsp;of &nbsp;PPSP &nbsp;will=20
  &nbsp;consider &nbsp;transmission &nbsp;of &nbsp;multiple</DIV>
  <DIV>streams &nbsp;(layered &nbsp;media). &nbsp;This &nbsp;includes =
&nbsp;to=20
  &nbsp;investigate &nbsp;various &nbsp;media</DIV>
  <DIV>coding &nbsp;mechanisms &nbsp;(e.g. &nbsp;SVC, &nbsp;MDC) =
&nbsp;to=20
  &nbsp;incorporate &nbsp;their &nbsp;features &nbsp;into</DIV>
  <DIV>media &nbsp;description &nbsp;(e.g. &nbsp;chunk &nbsp;description =

  &nbsp;in &nbsp;peer &nbsp;protocol).</DIV>
  <DIV>&nbsp;</DIV>[Update]</FONT></DIV>
  <DIV><FONT color=3D#0000ff size=3D2><FONT face=3DVerdana>&gt;&gt;The =
&nbsp;design=20
  &nbsp;of &nbsp;PPSP &nbsp;will &nbsp;consider &nbsp;the senario of=20
  transmission &nbsp;of &nbsp;multiple</FONT>=20
  <DIV><FONT face=3DVerdana>streams &nbsp;(layered &nbsp;media). =
&nbsp;This=20
  &nbsp;includes&nbsp;<FONT style=3D"BACKGROUND-COLOR: #ffff00"><FONT=20
  style=3D"BACKGROUND-COLOR: #ffffff" =
color=3D#0000ff>considering&nbsp;variou media=20
  descriptions </FONT></FONT></FONT></DIV>
  <DIV><FONT style=3D"BACKGROUND-COLOR: #ffff00"><FONT=20
  style=3D"BACKGROUND-COLOR: #ffffff" face=3DVerdana =
color=3D#0000ff>(e.g. chunk=20
  description in peer protocol) after investigating&nbsp;different media =
coding=20
  </FONT></FONT></DIV>
  <DIV><FONT color=3D#0000ff><FONT style=3D"BACKGROUND-COLOR: =
#ffff00"><FONT=20
  style=3D"BACKGROUND-COLOR: #ffffff" =
face=3DVerdana>mechanisms</FONT></FONT><FONT=20
  style=3D"BACKGROUND-COLOR: #ffff00"><FONT style=3D"BACKGROUND-COLOR: =
#ffffff"=20
  face=3DVerdana>&nbsp;(e.g. SVC, MDC) to incorporate their features in =
the=20
  protocol.</FONT></FONT></FONT></DIV>
  <DIV><FONT face=3DVerdana></FONT>&nbsp;</DIV>
  <DIV><FONT face=3DVerdana>This way,we leave room for some other =
approches while=20
  keep the scope in the signaling domain.</FONT></DIV>
  <DIV><FONT face=3DVerdana></FONT>&nbsp;</DIV>
  <DIV><FONT face=3DVerdana>BR</FONT></DIV>
  <DIV><FONT face=3DVerdana>Yunfei</FONT></DIV></FONT></DIV>
  <DIV><FONT face=3DVerdana size=3D2></FONT>&nbsp;</DIV>
  <DIV align=3Dleft>
  <DIV align=3Dleft><FONT face=3DVerdana size=3D2>
  <HR style=3D"WIDTH: 122px; HEIGHT: 2px" SIZE=3D2>
  </FONT></DIV>
  <DIV><FONT color=3D#c0c0c0><FONT face=3DVerdana =
size=3D2>zhangyunfei</FONT></DIV>
  <DIV><FONT face=3DVerdana =
size=3D2>2009-12-10</FONT></FONT></DIV></DIV>
  <DIV><FONT face=3DVerdana size=3D2>
  <HR>
  </FONT></DIV>
  <DIV><FONT face=3DVerdana><FONT =
size=3D2><STRONG>=B7=A2=BC=FE=C8=CB=A3=BA</STRONG>=20
  Alberto_Jos=E9_Gonz=E1lez_Cela</FONT></FONT></DIV>
  <DIV><FONT face=3DVerdana><FONT =
size=3D2><STRONG>=B7=A2=CB=CD=CA=B1=BC=E4=A3=BA</STRONG>=20
  2009-12-03&nbsp;05:29:32</FONT></FONT></DIV>
  <DIV><FONT face=3DVerdana><FONT =
size=3D2><STRONG>=CA=D5=BC=FE=C8=CB=A3=BA</STRONG>=20
  ppsp@ietf.org</FONT></FONT></DIV>
  <DIV><FONT face=3DVerdana><FONT =
size=3D2><STRONG>=B3=AD=CB=CD=A3=BA</STRONG> </FONT></FONT></DIV>
  <DIV><FONT face=3DVerdana><FONT =
size=3D2><STRONG>=D6=F7=CC=E2=A3=BA</STRONG> Re: [ppsp] charter=20
  discussion</FONT></FONT></DIV>
  <DIV><FONT face=3DVerdana size=3D2></FONT>&nbsp;</DIV>
  <DIV><FONT face=3DVerdana size=3D2>
  <DIV>Hi &nbsp;all,</DIV>
  <DIV>&nbsp;</DIV>
  <DIV>Just &nbsp;one &nbsp;comment.</DIV>
  <DIV>&nbsp;</DIV>
  <DIV>I &nbsp;would &nbsp;generalize &nbsp;the &nbsp;following:</DIV>
  <DIV>&nbsp;</DIV>
  <DIV>[new] &nbsp;The &nbsp;design &nbsp;of &nbsp;PPSP &nbsp;will=20
  &nbsp;investigate &nbsp;various &nbsp;media &nbsp;coding</DIV>
  <DIV>mechanisms &nbsp;(e.g. &nbsp;SVC, &nbsp;MDC) &nbsp;to =
&nbsp;incorporate=20
  &nbsp;their &nbsp;features &nbsp;into &nbsp;media</DIV>
  <DIV>description &nbsp;(e.g. &nbsp;chunk &nbsp;description &nbsp;in =
&nbsp;peer=20
  &nbsp;protocol).</DIV>
  <DIV>&nbsp;</DIV>
  <DIV>According &nbsp;to &nbsp;the &nbsp;following:</DIV>
  <DIV>&nbsp;</DIV>
  <DIV>[new] &nbsp;The &nbsp;design &nbsp;of &nbsp;PPSP &nbsp;will=20
  &nbsp;consider &nbsp;transmission &nbsp;of &nbsp;multiple</DIV>
  <DIV>streams &nbsp;(layered &nbsp;media). &nbsp;This &nbsp;includes =
&nbsp;to=20
  &nbsp;investigate &nbsp;various &nbsp;media</DIV>
  <DIV>coding &nbsp;mechanisms &nbsp;(e.g. &nbsp;SVC, &nbsp;MDC) =
&nbsp;to=20
  &nbsp;incorporate &nbsp;their &nbsp;features &nbsp;into</DIV>
  <DIV>media &nbsp;description &nbsp;(e.g. &nbsp;chunk &nbsp;description =

  &nbsp;in &nbsp;peer &nbsp;protocol).</DIV>
  <DIV>&nbsp;</DIV>
  <DIV>This &nbsp;way, &nbsp;we &nbsp;don't &nbsp;focus &nbsp;only =
&nbsp;on=20
  &nbsp;media &nbsp;coding &nbsp;techniques &nbsp;and &nbsp;we =
&nbsp;leave</DIV>
  <DIV>the &nbsp;door &nbsp;open &nbsp;for &nbsp;other &nbsp;approaches=20
  &nbsp;such &nbsp;as &nbsp;media &nbsp;synchronization</DIV>
  <DIV>(audio, &nbsp;video, &nbsp;etc.).</DIV>
  <DIV>&nbsp;</DIV>
  <DIV>BR,</DIV>
  <DIV>&nbsp;</DIV>
  <DIV>-- &nbsp;</DIV>
  <DIV>Alberto &nbsp;Jose &nbsp;Gonzalez &nbsp;Cela</DIV>
  <DIV>Universitat &nbsp;Politecnica &nbsp;de &nbsp;Catalunya &nbsp;/=20
  &nbsp;i2CAT &nbsp;Foundation</DIV>
  <DIV>_______________________________________________</DIV>
  <DIV>ppsp &nbsp;mailing &nbsp;list</DIV>
  <DIV>ppsp@ietf.org</DIV>
  =
<DIV>https://www.ietf.org/mailman/listinfo/ppsp</DIV></FONT></DIV></BLOCK=
QUOTE></BODY></HTML>

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--=====003_Dragon003747131377_=====--


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Date: Wed, 9 Dec 2009 20:01:41 -0800
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From: Ping Pan <ping@pingpan.org>
To: "Y.J. Gu" <guyingjie@huawei.com>
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Subject: Re: [ppsp] charter discussion
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Agree. Don't think ingest, streaming and delivery should be a part of PPSP.
Leave them open as each has multiple options.


2009/12/9 Y.J. Gu <guyingjie@huawei.com>

>  Hi,
> I agree that research in media coding is meaningful in PPSP, as we have
> discussed in the early posts.
> However, transmission IMHO is out the scope of PPSP. The main aim of PPSP=
,
> either Tracker protocol or peer protocol, is to help peers find where to =
get
> (parts of )the stream.  The transmission, including synchronization, can =
be
> guaranteed by other Protocol, e.g. RTSP. We don't restrict which protocol=
 a
> peer should use to get the stream, as long as both sides of the session c=
ome
> to a consensus.
> At this stage, I think we'd better not make the scope too wide and
> amphibolous, except that there are evidences that transmission will impac=
t
> P2P streaming protocol.
> Can anybody give some clues?
>
>
> Regards
>
> Yingjie Gu
>
>
>  ------------------------------
> *From:* ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] *On Behalf O=
f
> *zhangyunfei
> *Sent:* Thursday, December 10, 2009 11:08 AM
> *To:* Alberto_Jos=E9=96=8BGonz=E9=86=A0ez_Cela; ppsp@ietf.org
> *Subject:* Re: [ppsp] charter discussion
>
>  Hi Alberto,
>    I agree that it's very important to think over media description with
> media coding into consideration.But I suggest to modify the sentence as
> follows:
>  [new]  The  design  of  PPSP  will  consider  transmission  of  multiple
> streams  (layered  media).  This  includes  to  investigate  various  med=
ia
> coding  mechanisms  (e.g.  SVC,  MDC)  to  incorporate  their  features
>  into
> media  description  (e.g.  chunk  description  in  peer  protocol).
>
> [Update]
> >>The  design  of  PPSP  will  consider  the senario of transmission  of
>  multiple
> streams  (layered  media).  This  includes considering variou media
> descriptions
> (e.g. chunk description in peer protocol) after investigating different
> media coding
> mechanisms (e.g. SVC, MDC) to incorporate their features in the protocol.
>
> This way,we leave room for some other approches while keep the scope in t=
he
> signaling domain.
>
> BR
> Yunfei
>
>  ------------------------------
>  zhangyunfei
> 2009-12-10
>  ------------------------------
>  *=E5=8F=91=E4=BB=B6=E4=BA=BA=EF=BC=9A* Alberto_Jos=E9=96=8BGonz=E9=86=A0=
ez_Cela
> *=E5=8F=91=E9=80=81=E6=97=B6=E9=97=B4=EF=BC=9A* 2009-12-03 05:29:32
> *=E6=94=B6=E4=BB=B6=E4=BA=BA=EF=BC=9A* ppsp@ietf.org
> *=E6=8A=84=E9=80=81=EF=BC=9A*
> *=E4=B8=BB=E9=A2=98=EF=BC=9A* Re: [ppsp] charter discussion
>
>  Hi  all,
>
> Just  one  comment.
>
> I  would  generalize  the  following:
>
> [new]  The  design  of  PPSP  will  investigate  various  media  coding
> mechanisms  (e.g.  SVC,  MDC)  to  incorporate  their  features  into
>  media
> description  (e.g.  chunk  description  in  peer  protocol).
>
> According  to  the  following:
>
> [new]  The  design  of  PPSP  will  consider  transmission  of  multiple
> streams  (layered  media).  This  includes  to  investigate  various  med=
ia
> coding  mechanisms  (e.g.  SVC,  MDC)  to  incorporate  their  features
>  into
> media  description  (e.g.  chunk  description  in  peer  protocol).
>
> This  way,  we  don't  focus  only  on  media  coding  techniques  and  w=
e
>  leave
> the  door  open  for  other  approaches  such  as  media  synchronization
> (audio,  video,  etc.).
>
> BR,
>
> --
> Alberto  Jose  Gonzalez  Cela
> Universitat  Politecnica  de  Catalunya  /  i2CAT  Foundation
> _______________________________________________
> ppsp  mailing  list
> ppsp@ietf.org
> https://www.ietf.org/mailman/listinfo/ppsp
>
>
> _______________________________________________
> ppsp mailing list
> ppsp@ietf.org
> https://www.ietf.org/mailman/listinfo/ppsp
>
>

--001636e1f7ae65ef3e047a57dd1a
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

<font class=3D"Apple-style-span" face=3D"&#39;courier new&#39;, monospace">=
Agree. Don&#39;t think ingest, streaming and delivery should be a part of P=
PSP. Leave them open as each has multiple options.<br></font>
<br><br><div class=3D"gmail_quote">2009/12/9 Y.J. Gu <span dir=3D"ltr">&lt;=
<a href=3D"mailto:guyingjie@huawei.com">guyingjie@huawei.com</a>&gt;</span>=
<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-lef=
t:1px #ccc solid;padding-left:1ex;">






<div>
<div dir=3D"ltr" align=3D"left"><span><font face=3D"Times New Roman" color=
=3D"#0000ff" size=3D"5">Hi,</font></span></div>
<div dir=3D"ltr" align=3D"left"><span><font face=3D"Times New Roman" color=
=3D"#0000ff" size=3D"5">I agree that research in media=20
coding is meaningful in PPSP, as we have discussed in the early=20
posts.</font></span></div>
<div dir=3D"ltr" align=3D"left"><span><font face=3D"Times New Roman" color=
=3D"#0000ff" size=3D"5">However, transmission IMHO is out=20
the scope of PPSP. The main aim of=C2=A0PPSP, either Tracker protocol=20
or=C2=A0peer protocol,=C2=A0is to help peers find where to get (parts of )t=
he=20
stream. =C2=A0The transmission, including synchronization,=C2=A0can be=20
guaranteed by other Protocol, e.g. RTSP. We don&#39;t restrict which protoc=
ol a peer=20
should use to get the stream, as long as both sides of the session=C2=A0com=
e to=20
a consensus.=C2=A0</font></span></div>
<div dir=3D"ltr" align=3D"left"><span><font face=3D"Times New Roman" color=
=3D"#0000ff" size=3D"5">At this stage, I think we&#39;d better=20
not make the scope too wide and amphibolous, except that there are evidence=
s=20
that transmission will impact P2P streaming protocol.</font></span></div>
<div dir=3D"ltr" align=3D"left"><span><font face=3D"Times New Roman" color=
=3D"#0000ff" size=3D"5">Can anybody give some=20
clues?</font></span></div>
<div><font face=3D"Times New Roman" color=3D"#0000ff" size=3D"5"></font>=C2=
=A0</div>
<div align=3D"left"><font size=3D"2">
<p style=3D"margin:0cm 0cm 0pt" align=3D"left"><span></span><span lang=3D"E=
N-US"></span></p>
<p class=3D"MsoNormal" style=3D"margin:0cm 0cm 0pt" align=3D"left"><span st=
yle=3D"font-size:9pt;line-height:150%"><font size=3D"4">Regards</font></spa=
n></p>
<p class=3D"MsoNormal" style=3D"margin:0cm 0cm 0pt"></p></font><span lang=
=3D"EN-US" style=3D"font-size:9pt;line-height:150%;font-family:Arial"><font=
 size=3D"4">Yingjie Gu</font></span></div>
<div><font face=3D"Times New Roman" color=3D"#0000ff" size=3D"5"></font>=C2=
=A0</div><br>
<blockquote dir=3D"ltr" style=3D"padding-left:5px;margin-left:5px;border-le=
ft:#0000ff 2px solid;margin-right:0px">
  <div lang=3D"zh-cn" dir=3D"ltr" align=3D"left">
  <hr>
  <font face=3D"Tahoma" size=3D"2"><div class=3D"im"><b>From:</b> <a href=
=3D"mailto:ppsp-bounces@ietf.org" target=3D"_blank">ppsp-bounces@ietf.org</=
a>=20
  [mailto:<a href=3D"mailto:ppsp-bounces@ietf.org" target=3D"_blank">ppsp-b=
ounces@ietf.org</a>] <b>On Behalf Of </b>zhangyunfei<br></div><b>Sent:</b>=
=20
  Thursday, December 10, 2009 11:08 AM<br><b>To:</b> Alberto_Jos=E9=96=8BGo=
nz=E9=86=A0ez_Cela;=20
  <a href=3D"mailto:ppsp@ietf.org" target=3D"_blank">ppsp@ietf.org</a><br><=
b>Subject:</b> Re: [ppsp] charter=20
  discussion<br></font><br></div><div><div></div><div class=3D"h5">
  <div></div>
  <div><font face=3D"Verdana" color=3D"#0000ff" size=3D"2">Hi Alberto,</fon=
t></div>
  <div><font face=3D"Verdana" color=3D"#0000ff" size=3D"2">=C2=A0=C2=A0 I=
=C2=A0agree=20
  that=C2=A0it&#39;s very important to=C2=A0think over=C2=A0media descripti=
on with=20
  media coding into consideration.But I suggest to modify the sentence as=
=20
  follows:</font></div>
  <div><font face=3D"Verdana" color=3D"#0000ff" size=3D"2">
  <div>[new] =C2=A0The =C2=A0design =C2=A0of =C2=A0PPSP =C2=A0will=20
  =C2=A0consider =C2=A0transmission =C2=A0of =C2=A0multiple</div>
  <div>streams =C2=A0(layered =C2=A0media). =C2=A0This =C2=A0includes =C2=
=A0to=20
  =C2=A0investigate =C2=A0various =C2=A0media</div>
  <div>coding =C2=A0mechanisms =C2=A0(e.g. =C2=A0SVC, =C2=A0MDC) =C2=A0to=
=20
  =C2=A0incorporate =C2=A0their =C2=A0features =C2=A0into</div>
  <div>media =C2=A0description =C2=A0(e.g. =C2=A0chunk =C2=A0description=20
  =C2=A0in =C2=A0peer =C2=A0protocol).</div>
  <div>=C2=A0</div>[Update]</font></div>
  <div><font color=3D"#0000ff" size=3D"2"><font face=3D"Verdana">&gt;&gt;Th=
e =C2=A0design=20
  =C2=A0of =C2=A0PPSP =C2=A0will =C2=A0consider =C2=A0the senario of=20
  transmission =C2=A0of =C2=A0multiple</font>=20
  <div><font face=3D"Verdana">streams =C2=A0(layered =C2=A0media). =C2=A0Th=
is=20
  =C2=A0includes=C2=A0<font style=3D"background-color:#ffff00"><font style=
=3D"background-color:#ffffff" color=3D"#0000ff">considering=C2=A0variou med=
ia=20
  descriptions </font></font></font></div>
  <div><font style=3D"background-color:#ffff00"><font style=3D"background-c=
olor:#ffffff" face=3D"Verdana" color=3D"#0000ff">(e.g. chunk=20
  description in peer protocol) after investigating=C2=A0different media co=
ding=20
  </font></font></div>
  <div><font color=3D"#0000ff"><font style=3D"background-color:#ffff00"><fo=
nt style=3D"background-color:#ffffff" face=3D"Verdana">mechanisms</font></f=
ont><font style=3D"background-color:#ffff00"><font style=3D"background-colo=
r:#ffffff" face=3D"Verdana">=C2=A0(e.g. SVC, MDC) to incorporate their feat=
ures in the=20
  protocol.</font></font></font></div>
  <div><font face=3D"Verdana"></font>=C2=A0</div>
  <div><font face=3D"Verdana">This way,we leave room for some other approch=
es while=20
  keep the scope in the signaling domain.</font></div>
  <div><font face=3D"Verdana"></font>=C2=A0</div>
  <div><font face=3D"Verdana">BR</font></div>
  <div><font face=3D"Verdana">Yunfei</font></div></font></div>
  <div><font face=3D"Verdana" size=3D"2"></font>=C2=A0</div>
  <div align=3D"left">
  <div align=3D"left"><font face=3D"Verdana" size=3D"2">
  <hr style=3D"width:122px;min-height:2px" size=3D"2">
  </font></div>
  <div><font color=3D"#c0c0c0"><font face=3D"Verdana" size=3D"2">zhangyunfe=
i</font></font></div>
  <div><font face=3D"Verdana" size=3D"2">2009-12-10</font></div></div>
  <div><font face=3D"Verdana" size=3D"2">
  <hr>
  </font></div>
  <div><font face=3D"Verdana"><font size=3D"2"><strong>=E5=8F=91=E4=BB=B6=
=E4=BA=BA=EF=BC=9A</strong>=20
  Alberto_Jos=E9=96=8BGonz=E9=86=A0ez_Cela</font></font></div>
  <div><font face=3D"Verdana"><font size=3D"2"><strong>=E5=8F=91=E9=80=81=
=E6=97=B6=E9=97=B4=EF=BC=9A</strong>=20
  2009-12-03=C2=A005:29:32</font></font></div>
  <div><font face=3D"Verdana"><font size=3D"2"><strong>=E6=94=B6=E4=BB=B6=
=E4=BA=BA=EF=BC=9A</strong>=20
  <a href=3D"mailto:ppsp@ietf.org" target=3D"_blank">ppsp@ietf.org</a></fon=
t></font></div>
  <div><font face=3D"Verdana"><font size=3D"2"><strong>=E6=8A=84=E9=80=81=
=EF=BC=9A</strong> </font></font></div>
  <div><font face=3D"Verdana"><font size=3D"2"><strong>=E4=B8=BB=E9=A2=98=
=EF=BC=9A</strong> Re: [ppsp] charter=20
  discussion</font></font></div>
  <div><font face=3D"Verdana" size=3D"2"></font>=C2=A0</div>
  <div><font face=3D"Verdana" size=3D"2">
  <div>Hi =C2=A0all,</div>
  <div>=C2=A0</div>
  <div>Just =C2=A0one =C2=A0comment.</div>
  <div>=C2=A0</div>
  <div>I =C2=A0would =C2=A0generalize =C2=A0the =C2=A0following:</div>
  <div>=C2=A0</div>
  <div>[new] =C2=A0The =C2=A0design =C2=A0of =C2=A0PPSP =C2=A0will=20
  =C2=A0investigate =C2=A0various =C2=A0media =C2=A0coding</div>
  <div>mechanisms =C2=A0(e.g. =C2=A0SVC, =C2=A0MDC) =C2=A0to =C2=A0incorpor=
ate=20
  =C2=A0their =C2=A0features =C2=A0into =C2=A0media</div>
  <div>description =C2=A0(e.g. =C2=A0chunk =C2=A0description =C2=A0in =C2=
=A0peer=20
  =C2=A0protocol).</div>
  <div>=C2=A0</div>
  <div>According =C2=A0to =C2=A0the =C2=A0following:</div>
  <div>=C2=A0</div>
  <div>[new] =C2=A0The =C2=A0design =C2=A0of =C2=A0PPSP =C2=A0will=20
  =C2=A0consider =C2=A0transmission =C2=A0of =C2=A0multiple</div>
  <div>streams =C2=A0(layered =C2=A0media). =C2=A0This =C2=A0includes =C2=
=A0to=20
  =C2=A0investigate =C2=A0various =C2=A0media</div>
  <div>coding =C2=A0mechanisms =C2=A0(e.g. =C2=A0SVC, =C2=A0MDC) =C2=A0to=
=20
  =C2=A0incorporate =C2=A0their =C2=A0features =C2=A0into</div>
  <div>media =C2=A0description =C2=A0(e.g. =C2=A0chunk =C2=A0description=20
  =C2=A0in =C2=A0peer =C2=A0protocol).</div>
  <div>=C2=A0</div>
  <div>This =C2=A0way, =C2=A0we =C2=A0don&#39;t =C2=A0focus =C2=A0only =C2=
=A0on=20
  =C2=A0media =C2=A0coding =C2=A0techniques =C2=A0and =C2=A0we =C2=A0leave<=
/div>
  <div>the =C2=A0door =C2=A0open =C2=A0for =C2=A0other =C2=A0approaches=20
  =C2=A0such =C2=A0as =C2=A0media =C2=A0synchronization</div>
  <div>(audio, =C2=A0video, =C2=A0etc.).</div>
  <div>=C2=A0</div>
  <div>BR,</div>
  <div>=C2=A0</div>
  <div>-- =C2=A0</div>
  <div>Alberto =C2=A0Jose =C2=A0Gonzalez =C2=A0Cela</div>
  <div>Universitat =C2=A0Politecnica =C2=A0de =C2=A0Catalunya =C2=A0/=20
  =C2=A0i2CAT =C2=A0Foundation</div>
  <div>_______________________________________________</div>
  <div>ppsp =C2=A0mailing =C2=A0list</div>
  <div><a href=3D"mailto:ppsp@ietf.org" target=3D"_blank">ppsp@ietf.org</a>=
</div>
  <div><a href=3D"https://www.ietf.org/mailman/listinfo/ppsp" target=3D"_bl=
ank">https://www.ietf.org/mailman/listinfo/ppsp</a></div></font></div></div=
></div></blockquote></div>
<br>_______________________________________________<br>
ppsp mailing list<br>
<a href=3D"mailto:ppsp@ietf.org">ppsp@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/ppsp" target=3D"_blank">ht=
tps://www.ietf.org/mailman/listinfo/ppsp</a><br>
<br></blockquote></div><br>

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Date: Thu, 10 Dec 2009 11:10:08 +0100
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From: =?ISO-8859-1?Q?Alberto_Jos=E9_Gonz=E1lez_Cela?= <albertojgc@gmail.com>
To: zhangyunfei <zhangyunfei@chinamobile.com>
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Subject: Re: [ppsp] charter discussion
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--00032555a39a135f49047a5d03bb
Content-Type: text/plain; charset=GB2312
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Hi all,

I think that media coding techniques is not an issue within the scope of
PPSP, as it is a particular case. However, I think that the idea of
considering the transmission of multiple streams can be considered during
the design and protocol definition of PPSP as it allows to extend the
protocol in an easy manner. I think that to have this in mind doesn't make
the scope wider while offers the possibility to create a more flexible
protocol.

BR,

Alberto.

2009/12/10 zhangyunfei <zhangyunfei@chinamobile.com>

>  Hi Alberto,
>    I agree that it's very important to think over media description with
> media coding into consideration.But I suggest to modify the sentence as
> follows:
>  [new]  The  design  of  PPSP  will  consider  transmission  of  multiple
> streams  (layered  media).  This  includes  to  investigate  various  med=
ia
> coding  mechanisms  (e.g.  SVC,  MDC)  to  incorporate  their  features
>  into
> media  description  (e.g.  chunk  description  in  peer  protocol).
>
> [Update]
> >>The  design  of  PPSP  will  consider  the senario of transmission  of
>  multiple
> streams  (layered  media).  This  includes considering variou media
> descriptions
> (e.g. chunk description in peer protocol) after investigating different
> media coding
> mechanisms (e.g. SVC, MDC) to incorporate their features in the protocol.
>
> This way,we leave room for some other approches while keep the scope in t=
he
> signaling domain.
>
> BR
> Yunfei
>
>  ------------------------------
>  zhangyunfei
> 2009-12-10
>  ------------------------------
>  *=B7=A2=BC=FE=C8=CB=A3=BA* Alberto_Jos=E9_Gonz=E1lez_Cela
> *=B7=A2=CB=CD=CA=B1=BC=E4=A3=BA* 2009-12-03 05:29:32
> *=CA=D5=BC=FE=C8=CB=A3=BA* ppsp@ietf.org
> *=B3=AD=CB=CD=A3=BA*
> *=D6=F7=CC=E2=A3=BA* Re: [ppsp] charter discussion
>
>  Hi  all,
>
> Just  one  comment.
>
> I  would  generalize  the  following:
>
> [new]  The  design  of  PPSP  will  investigate  various  media  coding
> mechanisms  (e.g.  SVC,  MDC)  to  incorporate  their  features  into
>  media
> description  (e.g.  chunk  description  in  peer  protocol).
>
> According  to  the  following:
>
> [new]  The  design  of  PPSP  will  consider  transmission  of  multiple
> streams  (layered  media).  This  includes  to  investigate  various  med=
ia
> coding  mechanisms  (e.g.  SVC,  MDC)  to  incorporate  their  features
>  into
> media  description  (e.g.  chunk  description  in  peer  protocol).
>
> This  way,  we  don't  focus  only  on  media  coding  techniques  and  w=
e
>  leave
> the  door  open  for  other  approaches  such  as  media  synchronization
> (audio,  video,  etc.).
>
> BR,
>
> --
> Alberto  Jose  Gonzalez  Cela
> Universitat  Politecnica  de  Catalunya  /  i2CAT  Foundation
> _______________________________________________
> ppsp  mailing  list
> ppsp@ietf.org
> https://www.ietf.org/mailman/listinfo/ppsp
>



--=20
Alberto Jose Gonzalez Cela

--00032555a39a135f49047a5d03bb
Content-Type: text/html; charset=GB2312
Content-Transfer-Encoding: quoted-printable

Hi all,<div><br></div><div>I think that media coding techniques is not an i=
ssue within the scope of PPSP, as it is a particular case. However, I think=
 that the idea of considering the transmission of multiple streams can be c=
onsidered during the design and protocol definition of PPSP as it allows to=
 extend the protocol in an easy manner. I think that to have this in mind d=
oesn&#39;t make the scope wider while offers the possibility to create a mo=
re flexible protocol.</div>
<div><br></div><div>BR,</div><div><br></div><div>Alberto.<br><br><div class=
=3D"gmail_quote">2009/12/10 zhangyunfei <span dir=3D"ltr">&lt;<a href=3D"ma=
ilto:zhangyunfei@chinamobile.com">zhangyunfei@chinamobile.com</a>&gt;</span=
><br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex;">





<div>
<div><font face=3D"Verdana" color=3D"#0000ff" size=3D"2">Hi Alberto,</font>=
</div>
<div><font face=3D"Verdana" color=3D"#0000ff" size=3D"2">&nbsp;&nbsp; I&nbs=
p;agree=20
that&nbsp;it&#39;s very important to&nbsp;think over&nbsp;media description=
 with=20
media coding into consideration.But I suggest to modify the sentence as=20
follows:</font></div>
<div><font face=3D"Verdana" color=3D"#0000ff" size=3D"2"><div class=3D"im">
<div>[new] &nbsp;The &nbsp;design &nbsp;of &nbsp;PPSP &nbsp;will &nbsp;cons=
ider=20
&nbsp;transmission &nbsp;of &nbsp;multiple</div>
<div>streams &nbsp;(layered &nbsp;media). &nbsp;This &nbsp;includes &nbsp;t=
o=20
&nbsp;investigate &nbsp;various &nbsp;media</div>
<div>coding &nbsp;mechanisms &nbsp;(e.g. &nbsp;SVC, &nbsp;MDC) &nbsp;to=20
&nbsp;incorporate &nbsp;their &nbsp;features &nbsp;into</div>
<div>media &nbsp;description &nbsp;(e.g. &nbsp;chunk &nbsp;description &nbs=
p;in=20
&nbsp;peer &nbsp;protocol).</div>
<div>&nbsp;</div></div>[Update]</font></div>
<div><font color=3D"#0000ff" size=3D"2"><font face=3D"Verdana">&gt;&gt;The =
&nbsp;design=20
&nbsp;of &nbsp;PPSP &nbsp;will &nbsp;consider &nbsp;the senario of transmis=
sion=20
&nbsp;of &nbsp;multiple</font>
<div><font face=3D"Verdana">streams &nbsp;(layered &nbsp;media). &nbsp;This=
=20
&nbsp;includes&nbsp;<font style=3D"background-color:#ffff00"><font style=3D=
"background-color:#ffffff" color=3D"#0000ff">considering&nbsp;variou media=
=20
descriptions </font></font></font></div>
<div><font style=3D"background-color:#ffff00"><font style=3D"background-col=
or:#ffffff" face=3D"Verdana" color=3D"#0000ff">(e.g. chunk=20
description in peer protocol) after investigating&nbsp;different media codi=
ng=20
</font></font></div>
<div><font color=3D"#0000ff"><font style=3D"background-color:#ffff00"><font=
 style=3D"background-color:#ffffff" face=3D"Verdana">mechanisms</font></fon=
t><font style=3D"background-color:#ffff00"><font style=3D"background-color:=
#ffffff" face=3D"Verdana">&nbsp;(e.g. SVC, MDC) to incorporate their featur=
es in the=20
protocol.</font></font></font></div>
<div><font face=3D"Verdana"></font>&nbsp;</div>
<div><font face=3D"Verdana">This way,we leave room for some other approches=
 while=20
keep the scope in the signaling domain.</font></div>
<div><font face=3D"Verdana"></font>&nbsp;</div>
<div><font face=3D"Verdana">BR</font></div>
<div><font face=3D"Verdana">Yunfei</font></div></font></div>
<div><font face=3D"Verdana" size=3D"2"></font>&nbsp;</div>
<div align=3D"left">
<div align=3D"left"><font face=3D"Verdana" size=3D"2">
<hr style=3D"width:122px;min-height:2px" size=3D"2">
</font></div>
<div><font color=3D"#c0c0c0"><font face=3D"Verdana" size=3D"2">zhangyunfei<=
/font></font></div>
<div><font face=3D"Verdana" size=3D"2">2009-12-10</font></div></div>
<div><font face=3D"Verdana" size=3D"2">
<hr>
</font></div>
<div><font face=3D"Verdana"><font size=3D"2"><strong>=B7=A2=BC=FE=C8=CB=A3=
=BA</strong>=20
Alberto_Jos=E9_Gonz=E1lez_Cela</font></font></div>
<div><font face=3D"Verdana"><font size=3D"2"><strong>=B7=A2=CB=CD=CA=B1=BC=
=E4=A3=BA</strong>=20
2009-12-03&nbsp;05:29:32</font></font></div>
<div><font face=3D"Verdana"><font size=3D"2"><strong>=CA=D5=BC=FE=C8=CB=A3=
=BA</strong>=20
<a href=3D"mailto:ppsp@ietf.org" target=3D"_blank">ppsp@ietf.org</a></font>=
</font></div>
<div><font face=3D"Verdana"><font size=3D"2"><strong>=B3=AD=CB=CD=A3=BA</st=
rong> </font></font></div>
<div><font face=3D"Verdana"><font size=3D"2"><strong>=D6=F7=CC=E2=A3=BA</st=
rong> Re: [ppsp] charter=20
discussion</font></font></div>
<div><font face=3D"Verdana" size=3D"2"></font>&nbsp;</div>
<div><font face=3D"Verdana" size=3D"2"><div><div></div><div class=3D"h5">
<div>Hi &nbsp;all,</div>
<div>&nbsp;</div>
<div>Just &nbsp;one &nbsp;comment.</div>
<div>&nbsp;</div>
<div>I &nbsp;would &nbsp;generalize &nbsp;the &nbsp;following:</div>
<div>&nbsp;</div>
<div>[new] &nbsp;The &nbsp;design &nbsp;of &nbsp;PPSP &nbsp;will=20
&nbsp;investigate &nbsp;various &nbsp;media &nbsp;coding</div>
<div>mechanisms &nbsp;(e.g. &nbsp;SVC, &nbsp;MDC) &nbsp;to &nbsp;incorporat=
e=20
&nbsp;their &nbsp;features &nbsp;into &nbsp;media</div>
<div>description &nbsp;(e.g. &nbsp;chunk &nbsp;description &nbsp;in &nbsp;p=
eer=20
&nbsp;protocol).</div>
<div>&nbsp;</div>
<div>According &nbsp;to &nbsp;the &nbsp;following:</div>
<div>&nbsp;</div>
<div>[new] &nbsp;The &nbsp;design &nbsp;of &nbsp;PPSP &nbsp;will &nbsp;cons=
ider=20
&nbsp;transmission &nbsp;of &nbsp;multiple</div>
<div>streams &nbsp;(layered &nbsp;media). &nbsp;This &nbsp;includes &nbsp;t=
o=20
&nbsp;investigate &nbsp;various &nbsp;media</div>
<div>coding &nbsp;mechanisms &nbsp;(e.g. &nbsp;SVC, &nbsp;MDC) &nbsp;to=20
&nbsp;incorporate &nbsp;their &nbsp;features &nbsp;into</div>
<div>media &nbsp;description &nbsp;(e.g. &nbsp;chunk &nbsp;description &nbs=
p;in=20
&nbsp;peer &nbsp;protocol).</div>
<div>&nbsp;</div>
<div>This &nbsp;way, &nbsp;we &nbsp;don&#39;t &nbsp;focus &nbsp;only &nbsp;=
on=20
&nbsp;media &nbsp;coding &nbsp;techniques &nbsp;and &nbsp;we &nbsp;leave</d=
iv>
<div>the &nbsp;door &nbsp;open &nbsp;for &nbsp;other &nbsp;approaches &nbsp=
;such=20
&nbsp;as &nbsp;media &nbsp;synchronization</div>
<div>(audio, &nbsp;video, &nbsp;etc.).</div>
<div>&nbsp;</div>
<div>BR,</div>
<div>&nbsp;</div>
<div>-- &nbsp;</div>
<div>Alberto &nbsp;Jose &nbsp;Gonzalez &nbsp;Cela</div>
<div>Universitat &nbsp;Politecnica &nbsp;de &nbsp;Catalunya &nbsp;/ &nbsp;i=
2CAT=20
&nbsp;Foundation</div>
</div></div><div>_______________________________________________</div>
<div>ppsp &nbsp;mailing &nbsp;list</div>
<div><a href=3D"mailto:ppsp@ietf.org" target=3D"_blank">ppsp@ietf.org</a></=
div>
<div><a href=3D"https://www.ietf.org/mailman/listinfo/ppsp" target=3D"_blan=
k">https://www.ietf.org/mailman/listinfo/ppsp</a></div></font></div></div>
</blockquote></div><br><br clear=3D"all"><br>-- <br>Alberto Jose Gonzalez C=
ela<br><br>
</div>

--00032555a39a135f49047a5d03bb--

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Date: Thu, 10 Dec 2009 18:20:58 +0800
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--=====003_Dragon046385757722_=====--


From gyuri@kth.se  Thu Dec 10 02:35:59 2009
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Subject: Re: [ppsp] charter discussion
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Hi all,

I would also argue for not including media coding techniques in PPSP.

One can treat the problem of media coding at a higher level:
- single layer,
- multiple layers of equal importance (balanced MDC) and
- multiple layers of different importance (non-balanced MDC)
- multiple layers of different importance and dependence (LC)

It would be enough for PPSP to be able to express this structure: the
importance and the possible dependence between the layers. The
particular media encoding format used is then rather irrelevant.

Regards,
 Gyo"rgy

Alberto Jos¨¦ Gonz¨¢lez Cela wrote:
> Hi all,
> 
> I think that media coding techniques is not an issue within the scope of PPSP, as it is a particular case. However, I think that the idea of considering the transmission of multiple streams can be considered during the design and protocol definition of PPSP as it allows to extend the protocol in an easy manner. I think that to have this in mind doesn't make the scope wider while offers the possibility to create a more flexible protocol.
> 
> BR,
> 
> Alberto.
> 
> 2009/12/10 zhangyunfei <zhangyunfei@chinamobile.com<mailto:zhangyunfei@chinamobile.com>>
> Hi Alberto,
>    I agree that it's very important to think over media description with media coding into consideration.But I suggest to modify the sentence as follows:
> [new]  The  design  of  PPSP  will  consider  transmission  of  multiple
> streams  (layered  media).  This  includes  to  investigate  various  media
> coding  mechanisms  (e.g.  SVC,  MDC)  to  incorporate  their  features  into
> media  description  (e.g.  chunk  description  in  peer  protocol).
> 
> [Update]
>>> The  design  of  PPSP  will  consider  the senario of transmission  of  multiple
> streams  (layered  media).  This  includes considering variou media descriptions
> (e.g. chunk description in peer protocol) after investigating different media coding
> mechanisms (e.g. SVC, MDC) to incorporate their features in the protocol.
> 
> This way,we leave room for some other approches while keep the scope in the signaling domain.
> 
> BR
> Yunfei
> 
> ________________________________
> zhangyunfei
> 2009-12-10
> ________________________________
> ·¢¼þÈË£º Alberto_José_González_Cela
> ·¢ËÍÊ±¼ä£º 2009-12-03 05:29:32
> ÊÕ¼þÈË£º ppsp@ietf.org<mailto:ppsp@ietf.org>
> ³­ËÍ£º
> Ö÷Ìâ£º Re: [ppsp] charter discussion
> 
> Hi  all,
> 
> Just  one  comment.
> 
> I  would  generalize  the  following:
> 
> [new]  The  design  of  PPSP  will  investigate  various  media  coding
> mechanisms  (e.g.  SVC,  MDC)  to  incorporate  their  features  into  media
> description  (e.g.  chunk  description  in  peer  protocol).
> 
> According  to  the  following:
> 
> [new]  The  design  of  PPSP  will  consider  transmission  of  multiple
> streams  (layered  media).  This  includes  to  investigate  various  media
> coding  mechanisms  (e.g.  SVC,  MDC)  to  incorporate  their  features  into
> media  description  (e.g.  chunk  description  in  peer  protocol).
> 
> This  way,  we  don't  focus  only  on  media  coding  techniques  and  we  leave
> the  door  open  for  other  approaches  such  as  media  synchronization
> (audio,  video,  etc.).
> 
> BR,
> 
> --
> Alberto  Jose  Gonzalez  Cela
> Universitat  Politecnica  de  Catalunya  /  i2CAT  Foundation
> _______________________________________________
> ppsp  mailing  list
> ppsp@ietf.org<mailto:ppsp@ietf.org>
> https://www.ietf.org/mailman/listinfo/ppsp
> 
> 
> 
> --
> Alberto Jose Gonzalez Cela
> 

-- 
Gyo"rgy D¨¢n
School of Electrical Engineering
KTH Royal Institute of Technology
Stockholm, Sweden
http://www.ee.kth.se/~gyuri

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Exactly, this is the key idea.

Alberto.

Universitat Politecnica de Catalunya / i2CAT Foundation

2009/12/10 Gyorgy Dan <gyuri@kth.se>

> Hi all,
>
> I would also argue for not including media coding techniques in PPSP.
>
> One can treat the problem of media coding at a higher level:
> - single layer,
> - multiple layers of equal importance (balanced MDC) and
> - multiple layers of different importance (non-balanced MDC)
> - multiple layers of different importance and dependence (LC)
>
> It would be enough for PPSP to be able to express this structure: the
> importance and the possible dependence between the layers. The
> particular media encoding format used is then rather irrelevant.
>
> Regards,
>  Gyo"rgy
>
> Alberto Jos=A8=A6 Gonz=A8=A2lez Cela wrote:
> > Hi all,
> >
> > I think that media coding techniques is not an issue within the scope o=
f
> PPSP, as it is a particular case. However, I think that the idea of
> considering the transmission of multiple streams can be considered during
> the design and protocol definition of PPSP as it allows to extend the
> protocol in an easy manner. I think that to have this in mind doesn't mak=
e
> the scope wider while offers the possibility to create a more flexible
> protocol.
> >
> > BR,
> >
> > Alberto.
> >
> > 2009/12/10 zhangyunfei <zhangyunfei@chinamobile.com<mailto:
> zhangyunfei@chinamobile.com>>
> > Hi Alberto,
> >    I agree that it's very important to think over media description wit=
h
> media coding into consideration.But I suggest to modify the sentence as
> follows:
> > [new]  The  design  of  PPSP  will  consider  transmission  of  multipl=
e
> > streams  (layered  media).  This  includes  to  investigate  various
>  media
> > coding  mechanisms  (e.g.  SVC,  MDC)  to  incorporate  their  features
>  into
> > media  description  (e.g.  chunk  description  in  peer  protocol).
> >
> > [Update]
> >>> The  design  of  PPSP  will  consider  the senario of transmission  o=
f
>  multiple
> > streams  (layered  media).  This  includes considering variou media
> descriptions
> > (e.g. chunk description in peer protocol) after investigating different
> media coding
> > mechanisms (e.g. SVC, MDC) to incorporate their features in the protoco=
l.
> >
> > This way,we leave room for some other approches while keep the scope in
> the signaling domain.
> >
> > BR
> > Yunfei
> >
> > ________________________________
> > zhangyunfei
> > 2009-12-10
> > ________________________________
> > =B7=A2=BC=FE=C8=CB=A3=BA Alberto_Jos=E9_Gonz=E1lez_Cela
> > =B7=A2=CB=CD=CA=B1=BC=E4=A3=BA 2009-12-03 05:29:32
> > =CA=D5=BC=FE=C8=CB=A3=BA ppsp@ietf.org<mailto:ppsp@ietf.org>
> > =B3=AD=CB=CD=A3=BA
> > =D6=F7=CC=E2=A3=BA Re: [ppsp] charter discussion
> >
> > Hi  all,
> >
> > Just  one  comment.
> >
> > I  would  generalize  the  following:
> >
> > [new]  The  design  of  PPSP  will  investigate  various  media  coding
> > mechanisms  (e.g.  SVC,  MDC)  to  incorporate  their  features  into
>  media
> > description  (e.g.  chunk  description  in  peer  protocol).
> >
> > According  to  the  following:
> >
> > [new]  The  design  of  PPSP  will  consider  transmission  of  multipl=
e
> > streams  (layered  media).  This  includes  to  investigate  various
>  media
> > coding  mechanisms  (e.g.  SVC,  MDC)  to  incorporate  their  features
>  into
> > media  description  (e.g.  chunk  description  in  peer  protocol).
> >
> > This  way,  we  don't  focus  only  on  media  coding  techniques  and
>  we  leave
> > the  door  open  for  other  approaches  such  as  media  synchronizati=
on
> > (audio,  video,  etc.).
> >
> > BR,
> >
> > --
> > Alberto  Jose  Gonzalez  Cela
> > Universitat  Politecnica  de  Catalunya  /  i2CAT  Foundation
> > _______________________________________________
> > ppsp  mailing  list
> > ppsp@ietf.org<mailto:ppsp@ietf.org>
> > https://www.ietf.org/mailman/listinfo/ppsp
> >
> >
> >
> > --
> > Alberto Jose Gonzalez Cela
> >
>
> --
> Gyo"rgy D=A8=A2n
> School of Electrical Engineering
> KTH Royal Institute of Technology
> Stockholm, Sweden
> http://www.ee.kth.se/~gyuri
>



--=20
Alberto Jose Gonzalez Cela

--0015175d072af134ef047a5d68c8
Content-Type: text/html; charset=GB2312
Content-Transfer-Encoding: quoted-printable

Exactly, this is the key idea.&nbsp;<div><br></div><div>Alberto.</div><div>=
<br></div><div>Universitat Politecnica de Catalunya / i2CAT Foundation<br><=
br><div class=3D"gmail_quote">2009/12/10 Gyorgy Dan <span dir=3D"ltr">&lt;<=
a href=3D"mailto:gyuri@kth.se">gyuri@kth.se</a>&gt;</span><br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex;">Hi all,<br>
<br>
I would also argue for not including media coding techniques in PPSP.<br>
<br>
One can treat the problem of media coding at a higher level:<br>
- single layer,<br>
- multiple layers of equal importance (balanced MDC) and<br>
- multiple layers of different importance (non-balanced MDC)<br>
- multiple layers of different importance and dependence (LC)<br>
<br>
It would be enough for PPSP to be able to express this structure: the<br>
importance and the possible dependence between the layers. The<br>
particular media encoding format used is then rather irrelevant.<br>
<br>
Regards,<br>
&nbsp;Gyo&quot;rgy<br>
<div class=3D"im"><br>
Alberto Jos=A8=A6 Gonz=A8=A2lez Cela wrote:<br>
&gt; Hi all,<br>
&gt;<br>
&gt; I think that media coding techniques is not an issue within the scope =
of PPSP, as it is a particular case. However, I think that the idea of cons=
idering the transmission of multiple streams can be considered during the d=
esign and protocol definition of PPSP as it allows to extend the protocol i=
n an easy manner. I think that to have this in mind doesn&#39;t make the sc=
ope wider while offers the possibility to create a more flexible protocol.<=
br>

&gt;<br>
&gt; BR,<br>
&gt;<br>
&gt; Alberto.<br>
&gt;<br>
</div>&gt; 2009/12/10 zhangyunfei &lt;<a href=3D"mailto:zhangyunfei@chinamo=
bile.com">zhangyunfei@chinamobile.com</a>&lt;mailto:<a href=3D"mailto:zhang=
yunfei@chinamobile.com">zhangyunfei@chinamobile.com</a>&gt;&gt;<br>
<div class=3D"im">&gt; Hi Alberto,<br>
&gt; &nbsp; &nbsp;I agree that it&#39;s very important to think over media =
description with media coding into consideration.But I suggest to modify th=
e sentence as follows:<br>
&gt; [new] &nbsp;The &nbsp;design &nbsp;of &nbsp;PPSP &nbsp;will &nbsp;cons=
ider &nbsp;transmission &nbsp;of &nbsp;multiple<br>
&gt; streams &nbsp;(layered &nbsp;media). &nbsp;This &nbsp;includes &nbsp;t=
o &nbsp;investigate &nbsp;various &nbsp;media<br>
&gt; coding &nbsp;mechanisms &nbsp;(e.g. &nbsp;SVC, &nbsp;MDC) &nbsp;to &nb=
sp;incorporate &nbsp;their &nbsp;features &nbsp;into<br>
&gt; media &nbsp;description &nbsp;(e.g. &nbsp;chunk &nbsp;description &nbs=
p;in &nbsp;peer &nbsp;protocol).<br>
&gt;<br>
&gt; [Update]<br>
&gt;&gt;&gt; The &nbsp;design &nbsp;of &nbsp;PPSP &nbsp;will &nbsp;consider=
 &nbsp;the senario of transmission &nbsp;of &nbsp;multiple<br>
&gt; streams &nbsp;(layered &nbsp;media). &nbsp;This &nbsp;includes conside=
ring variou media descriptions<br>
&gt; (e.g. chunk description in peer protocol) after investigating differen=
t media coding<br>
&gt; mechanisms (e.g. SVC, MDC) to incorporate their features in the protoc=
ol.<br>
&gt;<br>
&gt; This way,we leave room for some other approches while keep the scope i=
n the signaling domain.<br>
&gt;<br>
&gt; BR<br>
&gt; Yunfei<br>
&gt;<br>
&gt; ________________________________<br>
&gt; zhangyunfei<br>
&gt; 2009-12-10<br>
&gt; ________________________________<br>
&gt; =B7=A2=BC=FE=C8=CB=A3=BA Alberto_Jos=E9_Gonz=E1lez_Cela<br>
&gt; =B7=A2=CB=CD=CA=B1=BC=E4=A3=BA 2009-12-03 05:29:32<br>
</div>&gt; =CA=D5=BC=FE=C8=CB=A3=BA <a href=3D"mailto:ppsp@ietf.org">ppsp@i=
etf.org</a>&lt;mailto:<a href=3D"mailto:ppsp@ietf.org">ppsp@ietf.org</a>&gt=
;<br>
<div class=3D"im">&gt; =B3=AD=CB=CD=A3=BA<br>
&gt; =D6=F7=CC=E2=A3=BA Re: [ppsp] charter discussion<br>
&gt;<br>
&gt; Hi &nbsp;all,<br>
&gt;<br>
&gt; Just &nbsp;one &nbsp;comment.<br>
&gt;<br>
&gt; I &nbsp;would &nbsp;generalize &nbsp;the &nbsp;following:<br>
&gt;<br>
&gt; [new] &nbsp;The &nbsp;design &nbsp;of &nbsp;PPSP &nbsp;will &nbsp;inve=
stigate &nbsp;various &nbsp;media &nbsp;coding<br>
&gt; mechanisms &nbsp;(e.g. &nbsp;SVC, &nbsp;MDC) &nbsp;to &nbsp;incorporat=
e &nbsp;their &nbsp;features &nbsp;into &nbsp;media<br>
&gt; description &nbsp;(e.g. &nbsp;chunk &nbsp;description &nbsp;in &nbsp;p=
eer &nbsp;protocol).<br>
&gt;<br>
&gt; According &nbsp;to &nbsp;the &nbsp;following:<br>
&gt;<br>
&gt; [new] &nbsp;The &nbsp;design &nbsp;of &nbsp;PPSP &nbsp;will &nbsp;cons=
ider &nbsp;transmission &nbsp;of &nbsp;multiple<br>
&gt; streams &nbsp;(layered &nbsp;media). &nbsp;This &nbsp;includes &nbsp;t=
o &nbsp;investigate &nbsp;various &nbsp;media<br>
&gt; coding &nbsp;mechanisms &nbsp;(e.g. &nbsp;SVC, &nbsp;MDC) &nbsp;to &nb=
sp;incorporate &nbsp;their &nbsp;features &nbsp;into<br>
&gt; media &nbsp;description &nbsp;(e.g. &nbsp;chunk &nbsp;description &nbs=
p;in &nbsp;peer &nbsp;protocol).<br>
&gt;<br>
&gt; This &nbsp;way, &nbsp;we &nbsp;don&#39;t &nbsp;focus &nbsp;only &nbsp;=
on &nbsp;media &nbsp;coding &nbsp;techniques &nbsp;and &nbsp;we &nbsp;leave=
<br>
&gt; the &nbsp;door &nbsp;open &nbsp;for &nbsp;other &nbsp;approaches &nbsp=
;such &nbsp;as &nbsp;media &nbsp;synchronization<br>
&gt; (audio, &nbsp;video, &nbsp;etc.).<br>
&gt;<br>
&gt; BR,<br>
&gt;<br>
&gt; --<br>
&gt; Alberto &nbsp;Jose &nbsp;Gonzalez &nbsp;Cela<br>
&gt; Universitat &nbsp;Politecnica &nbsp;de &nbsp;Catalunya &nbsp;/ &nbsp;i=
2CAT &nbsp;Foundation<br>
&gt; _______________________________________________<br>
&gt; ppsp &nbsp;mailing &nbsp;list<br>
</div>&gt; <a href=3D"mailto:ppsp@ietf.org">ppsp@ietf.org</a>&lt;mailto:<a =
href=3D"mailto:ppsp@ietf.org">ppsp@ietf.org</a>&gt;<br>
<div><div></div><div class=3D"h5">&gt; <a href=3D"https://www.ietf.org/mail=
man/listinfo/ppsp" target=3D"_blank">https://www.ietf.org/mailman/listinfo/=
ppsp</a><br>
&gt;<br>
&gt;<br>
&gt;<br>
&gt; --<br>
&gt; Alberto Jose Gonzalez Cela<br>
&gt;<br>
<br>
</div></div><font color=3D"#888888">--<br>
Gyo&quot;rgy D=A8=A2n<br>
School of Electrical Engineering<br>
KTH Royal Institute of Technology<br>
Stockholm, Sweden<br>
<a href=3D"http://www.ee.kth.se/~gyuri" target=3D"_blank">http://www.ee.kth=
.se/~gyuri</a><br>
</font></blockquote></div><br><br clear=3D"all"><br>-- <br>Alberto Jose Gon=
zalez Cela<br><br>
</div>

--0015175d072af134ef047a5d68c8--

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Date: Thu, 10 Dec 2009 20:33:12 +0800
From: "Y.J. Gu" <guyingjie@huawei.com>
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I agree.
=20

Regards

Yingjie Gu

=20


  _____ =20

From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of
Alberto Jos=A8=A6 Gonz=A8=A2lez Cela
Sent: Thursday, December 10, 2009 6:39 PM
To: Gyorgy Dan
Cc: ppsp@ietf.org
Subject: Re: [ppsp] charter discussion


Exactly, this is the key idea. =20

Alberto.

Universitat Politecnica de Catalunya / i2CAT Foundation


2009/12/10 Gyorgy Dan <gyuri@kth.se>


Hi all,

I would also argue for not including media coding techniques in PPSP.

One can treat the problem of media coding at a higher level:
- single layer,
- multiple layers of equal importance (balanced MDC) and
- multiple layers of different importance (non-balanced MDC)
- multiple layers of different importance and dependence (LC)

It would be enough for PPSP to be able to express this structure: the
importance and the possible dependence between the layers. The
particular media encoding format used is then rather irrelevant.

Regards,
 Gyo"rgy


Alberto Jos=A8=A6 Gonz=A8=A2lez Cela wrote:
> Hi all,
>
> I think that media coding techniques is not an issue within the scope =
of
PPSP, as it is a particular case. However, I think that the idea of
considering the transmission of multiple streams can be considered =
during
the design and protocol definition of PPSP as it allows to extend the
protocol in an easy manner. I think that to have this in mind doesn't =
make
the scope wider while offers the possibility to create a more flexible
protocol.
>
> BR,
>
> Alberto.
>

> 2009/12/10 zhangyunfei
<zhangyunfei@chinamobile.com<mailto:zhangyunfei@chinamobile.com>>

> Hi Alberto,
>    I agree that it's very important to think over media description =
with
media coding into consideration.But I suggest to modify the sentence as
follows:
> [new]  The  design  of  PPSP  will  consider  transmission  of  =
multiple
> streams  (layered  media).  This  includes  to  investigate  various
media
> coding  mechanisms  (e.g.  SVC,  MDC)  to  incorporate  their  =
features
into
> media  description  (e.g.  chunk  description  in  peer  protocol).
>
> [Update]
>>> The  design  of  PPSP  will  consider  the senario of transmission  =
of
multiple
> streams  (layered  media).  This  includes considering variou media
descriptions
> (e.g. chunk description in peer protocol) after investigating =
different
media coding
> mechanisms (e.g. SVC, MDC) to incorporate their features in the =
protocol.
>
> This way,we leave room for some other approches while keep the scope =
in
the signaling domain.
>
> BR
> Yunfei
>
> ________________________________
> zhangyunfei
> 2009-12-10
> ________________________________
> =B7=A2=BC=FE=C8=CB=A3=BA Alberto_Jos=E9_Gonz=E1lez_Cela
> =B7=A2=CB=CD=CA=B1=BC=E4=A3=BA 2009-12-03 05:29:32

> =CA=D5=BC=FE=C8=CB=A3=BA ppsp@ietf.org<mailto:ppsp@ietf.org>

> =B3=AD=CB=CD=A3=BA
> =D6=F7=CC=E2=A3=BA Re: [ppsp] charter discussion
>
> Hi  all,
>
> Just  one  comment.
>
> I  would  generalize  the  following:
>
> [new]  The  design  of  PPSP  will  investigate  various  media  =
coding
> mechanisms  (e.g.  SVC,  MDC)  to  incorporate  their  features  into
media
> description  (e.g.  chunk  description  in  peer  protocol).
>
> According  to  the  following:
>
> [new]  The  design  of  PPSP  will  consider  transmission  of  =
multiple
> streams  (layered  media).  This  includes  to  investigate  various
media
> coding  mechanisms  (e.g.  SVC,  MDC)  to  incorporate  their  =
features
into
> media  description  (e.g.  chunk  description  in  peer  protocol).
>
> This  way,  we  don't  focus  only  on  media  coding  techniques  and =
 we
leave
> the  door  open  for  other  approaches  such  as  media  =
synchronization
> (audio,  video,  etc.).
>
> BR,
>
> --
> Alberto  Jose  Gonzalez  Cela
> Universitat  Politecnica  de  Catalunya  /  i2CAT  Foundation
> _______________________________________________
> ppsp  mailing  list

> ppsp@ietf.org<mailto:ppsp@ietf.org>

> https://www.ietf.org/mailman/listinfo/ppsp
>
>
>
> --
> Alberto Jose Gonzalez Cela
>


--
Gyo"rgy D=A8=A2n
School of Electrical Engineering
KTH Royal Institute of Technology
Stockholm, Sweden
http://www.ee.kth.se/~gyuri





--=20
Alberto Jose Gonzalez Cela




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<BODY>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D405493212-10122009><FONT=20
face=3D"Times New Roman" color=3D#0000ff size=3D5>I =
agree.</FONT></SPAN></DIV>
<DIV>&nbsp;</DIV>
<DIV align=3Dleft><FONT size=3D2>
<P class=3DMsoSalutation style=3D"MARGIN: 0cm 0cm 0pt" =
align=3Dleft><SPAN=20
style=3D"FONT-FAMILY: =CB=CE=CC=E5; mso-ascii-font-family: Arial; =
mso-hansi-font-family: Arial"></SPAN><SPAN=20
lang=3DEN-US><?xml:namespace prefix =3D o ns =3D=20
"urn:schemas-microsoft-com:office:office" /><o:p></o:p></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt" align=3Dleft><SPAN=20
style=3D"FONT-SIZE: 9pt; LINE-HEIGHT: 150%; FONT-FAMILY: =CB=CE=CC=E5; =
mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; =
mso-bidi-font-size: 10.0pt; mso-bidi-font-family: Arial"><FONT=20
size=3D4>Regards</FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt"></FONT><SPAN =
lang=3DEN-US=20
style=3D"FONT-SIZE: 9pt; LINE-HEIGHT: 150%; FONT-FAMILY: Arial; =
mso-bidi-font-size: 10.0pt"><FONT=20
size=3D4>Yingjie Gu</FONT></SPAN></P></DIV>
<DIV>&nbsp;</DIV><BR>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px =
solid; MARGIN-RIGHT: 0px">
  <DIV class=3DOutlookMessageHeader lang=3Dzh-cn dir=3Dltr align=3Dleft>
  <HR tabIndex=3D-1>
  <FONT face=3DTahoma size=3D2><B>From:</B> ppsp-bounces@ietf.org=20
  [mailto:ppsp-bounces@ietf.org] <B>On Behalf Of </B>Alberto Jos=A8=A6 =
Gonz=A8=A2lez=20
  Cela<BR><B>Sent:</B> Thursday, December 10, 2009 6:39 PM<BR><B>To:</B> =
Gyorgy=20
  Dan<BR><B>Cc:</B> ppsp@ietf.org<BR><B>Subject:</B> Re: [ppsp] charter=20
  discussion<BR></FONT><BR></DIV>
  <DIV></DIV>Exactly, this is the key idea.&nbsp;
  <DIV><BR></DIV>
  <DIV>Alberto.</DIV>
  <DIV><BR></DIV>
  <DIV>Universitat Politecnica de Catalunya / i2CAT Foundation<BR><BR>
  <DIV class=3Dgmail_quote>2009/12/10 Gyorgy Dan <SPAN dir=3Dltr>&lt;<A=20
  href=3D"mailto:gyuri@kth.se">gyuri@kth.se</A>&gt;</SPAN><BR>
  <BLOCKQUOTE class=3Dgmail_quote=20
  style=3D"PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: =
#ccc 1px solid">Hi=20
    all,<BR><BR>I would also argue for not including media coding =
techniques in=20
    PPSP.<BR><BR>One can treat the problem of media coding at a higher=20
    level:<BR>- single layer,<BR>- multiple layers of equal importance =
(balanced=20
    MDC) and<BR>- multiple layers of different importance (non-balanced=20
    MDC)<BR>- multiple layers of different importance and dependence=20
    (LC)<BR><BR>It would be enough for PPSP to be able to express this=20
    structure: the<BR>importance and the possible dependence between the =
layers.=20
    The<BR>particular media encoding format used is then rather=20
    irrelevant.<BR><BR>Regards,<BR>&nbsp;Gyo"rgy<BR>
    <DIV class=3Dim><BR>Alberto Jos=A8=A6 Gonz=A8=A2lez Cela =
wrote:<BR>&gt; Hi=20
    all,<BR>&gt;<BR>&gt; I think that media coding techniques is not an =
issue=20
    within the scope of PPSP, as it is a particular case. However, I =
think that=20
    the idea of considering the transmission of multiple streams can be=20
    considered during the design and protocol definition of PPSP as it =
allows to=20
    extend the protocol in an easy manner. I think that to have this in =
mind=20
    doesn't make the scope wider while offers the possibility to create =
a more=20
    flexible protocol.<BR>&gt;<BR>&gt; BR,<BR>&gt;<BR>&gt;=20
    Alberto.<BR>&gt;<BR></DIV>&gt; 2009/12/10 zhangyunfei &lt;<A=20
    =
href=3D"mailto:zhangyunfei@chinamobile.com">zhangyunfei@chinamobile.com</=
A>&lt;mailto:<A=20
    =
href=3D"mailto:zhangyunfei@chinamobile.com">zhangyunfei@chinamobile.com</=
A>&gt;&gt;<BR>
    <DIV class=3Dim>&gt; Hi Alberto,<BR>&gt; &nbsp; &nbsp;I agree that =
it's very=20
    important to think over media description with media coding into=20
    consideration.But I suggest to modify the sentence as =
follows:<BR>&gt; [new]=20
    &nbsp;The &nbsp;design &nbsp;of &nbsp;PPSP &nbsp;will &nbsp;consider =

    &nbsp;transmission &nbsp;of &nbsp;multiple<BR>&gt; streams =
&nbsp;(layered=20
    &nbsp;media). &nbsp;This &nbsp;includes &nbsp;to &nbsp;investigate=20
    &nbsp;various &nbsp;media<BR>&gt; coding &nbsp;mechanisms =
&nbsp;(e.g.=20
    &nbsp;SVC, &nbsp;MDC) &nbsp;to &nbsp;incorporate &nbsp;their =
&nbsp;features=20
    &nbsp;into<BR>&gt; media &nbsp;description &nbsp;(e.g. &nbsp;chunk=20
    &nbsp;description &nbsp;in &nbsp;peer =
&nbsp;protocol).<BR>&gt;<BR>&gt;=20
    [Update]<BR>&gt;&gt;&gt; The &nbsp;design &nbsp;of &nbsp;PPSP =
&nbsp;will=20
    &nbsp;consider &nbsp;the senario of transmission &nbsp;of=20
    &nbsp;multiple<BR>&gt; streams &nbsp;(layered &nbsp;media). =
&nbsp;This=20
    &nbsp;includes considering variou media descriptions<BR>&gt; (e.g. =
chunk=20
    description in peer protocol) after investigating different media=20
    coding<BR>&gt; mechanisms (e.g. SVC, MDC) to incorporate their =
features in=20
    the protocol.<BR>&gt;<BR>&gt; This way,we leave room for some other=20
    approches while keep the scope in the signaling =
domain.<BR>&gt;<BR>&gt;=20
    BR<BR>&gt; Yunfei<BR>&gt;<BR>&gt; =
________________________________<BR>&gt;=20
    zhangyunfei<BR>&gt; 2009-12-10<BR>&gt;=20
    ________________________________<BR>&gt; =B7=A2=BC=FE=C8=CB=A3=BA=20
    Alberto_Jos=E9_Gonz=E1lez_Cela<BR>&gt; =
=B7=A2=CB=CD=CA=B1=BC=E4=A3=BA 2009-12-03 05:29:32<BR></DIV>&gt;=20
    =CA=D5=BC=FE=C8=CB=A3=BA <A =
href=3D"mailto:ppsp@ietf.org">ppsp@ietf.org</A>&lt;mailto:<A=20
    href=3D"mailto:ppsp@ietf.org">ppsp@ietf.org</A>&gt;<BR>
    <DIV class=3Dim>&gt; =B3=AD=CB=CD=A3=BA<BR>&gt; =D6=F7=CC=E2=A3=BA =
Re: [ppsp] charter=20
    discussion<BR>&gt;<BR>&gt; Hi &nbsp;all,<BR>&gt;<BR>&gt; Just =
&nbsp;one=20
    &nbsp;comment.<BR>&gt;<BR>&gt; I &nbsp;would &nbsp;generalize =
&nbsp;the=20
    &nbsp;following:<BR>&gt;<BR>&gt; [new] &nbsp;The &nbsp;design =
&nbsp;of=20
    &nbsp;PPSP &nbsp;will &nbsp;investigate &nbsp;various &nbsp;media=20
    &nbsp;coding<BR>&gt; mechanisms &nbsp;(e.g. &nbsp;SVC, &nbsp;MDC) =
&nbsp;to=20
    &nbsp;incorporate &nbsp;their &nbsp;features &nbsp;into =
&nbsp;media<BR>&gt;=20
    description &nbsp;(e.g. &nbsp;chunk &nbsp;description &nbsp;in =
&nbsp;peer=20
    &nbsp;protocol).<BR>&gt;<BR>&gt; According &nbsp;to &nbsp;the=20
    &nbsp;following:<BR>&gt;<BR>&gt; [new] &nbsp;The &nbsp;design =
&nbsp;of=20
    &nbsp;PPSP &nbsp;will &nbsp;consider &nbsp;transmission &nbsp;of=20
    &nbsp;multiple<BR>&gt; streams &nbsp;(layered &nbsp;media). =
&nbsp;This=20
    &nbsp;includes &nbsp;to &nbsp;investigate &nbsp;various =
&nbsp;media<BR>&gt;=20
    coding &nbsp;mechanisms &nbsp;(e.g. &nbsp;SVC, &nbsp;MDC) &nbsp;to=20
    &nbsp;incorporate &nbsp;their &nbsp;features &nbsp;into<BR>&gt; =
media=20
    &nbsp;description &nbsp;(e.g. &nbsp;chunk &nbsp;description &nbsp;in =

    &nbsp;peer &nbsp;protocol).<BR>&gt;<BR>&gt; This &nbsp;way, &nbsp;we =

    &nbsp;don't &nbsp;focus &nbsp;only &nbsp;on &nbsp;media &nbsp;coding =

    &nbsp;techniques &nbsp;and &nbsp;we &nbsp;leave<BR>&gt; the =
&nbsp;door=20
    &nbsp;open &nbsp;for &nbsp;other &nbsp;approaches &nbsp;such =
&nbsp;as=20
    &nbsp;media &nbsp;synchronization<BR>&gt; (audio, &nbsp;video,=20
    &nbsp;etc.).<BR>&gt;<BR>&gt; BR,<BR>&gt;<BR>&gt; --<BR>&gt; Alberto=20
    &nbsp;Jose &nbsp;Gonzalez &nbsp;Cela<BR>&gt; Universitat =
&nbsp;Politecnica=20
    &nbsp;de &nbsp;Catalunya &nbsp;/ &nbsp;i2CAT =
&nbsp;Foundation<BR>&gt;=20
    _______________________________________________<BR>&gt; ppsp =
&nbsp;mailing=20
    &nbsp;list<BR></DIV>&gt; <A=20
    href=3D"mailto:ppsp@ietf.org">ppsp@ietf.org</A>&lt;mailto:<A=20
    href=3D"mailto:ppsp@ietf.org">ppsp@ietf.org</A>&gt;<BR>
    <DIV>
    <DIV></DIV>
    <DIV class=3Dh5>&gt; <A =
href=3D"https://www.ietf.org/mailman/listinfo/ppsp"=20
    =
target=3D_blank>https://www.ietf.org/mailman/listinfo/ppsp</A><BR>&gt;<BR=
>&gt;<BR>&gt;<BR>&gt;=20
    --<BR>&gt; Alberto Jose Gonzalez =
Cela<BR>&gt;<BR><BR></DIV></DIV><FONT=20
    color=3D#888888>--<BR>Gyo"rgy D=A8=A2n<BR>School of Electrical =
Engineering<BR>KTH=20
    Royal Institute of Technology<BR>Stockholm, Sweden<BR><A=20
    href=3D"http://www.ee.kth.se/~gyuri"=20
    =
target=3D_blank>http://www.ee.kth.se/~gyuri</A><BR></FONT></BLOCKQUOTE></=
DIV><BR><BR=20
  clear=3Dall><BR>-- <BR>Alberto Jose Gonzalez=20
Cela<BR><BR></DIV></BLOCKQUOTE></BODY></HTML>

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Dear all,

A few comments/questions regarding the peer<->tracker protocol:

=20

1.    I believe that the protocol should reflect the fact that sometimes
the tracker may 'recruit' additional resources to the swarm. This
ability to 'recruit' nodes helps facilitating the streaming in most p2p
existing live streaming platforms. These recruited nodes may be
'super-nodes' (hosted by the provider or identified as such by the
platform), or regular nodes called to hold some segments of data.

=20

2.    Related to the above and yet somewhat more delicate question is
whether different nodes have different 'roles'. The most obvious
example, related to super-nodes, is the need of a consumer node to be
aware of the fact that in the retrieved peer-list some of the nodes are
indeed super-nodes (thus are reliable, have all data, etc...). In a
different example the recruited nodes may be called to behave
differently and e.g. not to fetch the entire media stream/file but only
parts of it (VOD p2p streaming is an obvious case for this).=20

=20

3.  The tracker peer list might also include additional information
about the peers in the peer list. Common additional information is the
'zone' the peers are from (be a 'zone' the country, or the actual ISP),
LAN information, NAT types, 'role' (see my previous point), and so on.
This has to be somehow combined with ALTO which most probably will
contribute an In-ISP information. Another related point is whether the
peers in the peer-list are 'ordered'.

=20

4. I'm less sure how this should be tackled (and if at all under this
scope) but to my experience, sometimes, the tracker should be able to
'redirect' the peer to another channel/swarm. Example: the same
channel/event is being broadcasted from multiple encoders (for
redundancy and scalability) and the tracker acts also as a 'balancer' to
spread the viewers among the swarms. In some other cases, such as in
multiple stream qualities for 'adaptive bandwidth' (not SVC but multiple
channels in different qualities thus the way it is done in Silverlight)
the tracker 'picks' the channel according to pre-defined rules or
strategies (e.g. customers that paid for the service will be redirected
to a high-quality channel while the non-paying customers to a
lower-quality channel).=20

=20

5. To some extent the tracker should also, directly or indirectly,
receive feedback, such as status and statistics, from the peers. Basic
example is the peer's viewing quality. This information, usually, is not
being used to help the specific peer but the aggregation of such
information helps the platform/tracker to identify 'starvation' cases
and as a result to allocate additional resources to the swarm.

=20

Regards,

Omer


 
 
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<div class=3DSection1>

<p class=3DMsoNormal>Dear all,<o:p></o:p></p>

<p class=3DMsoNormal>A few comments/questions regarding the =
peer&lt;-&gt;tracker
protocol:<o:p></o:p></p>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

<p class=3DMsoNormal>1.&nbsp;&nbsp;&nbsp; I believe that the protocol =
should
reflect the fact that sometimes the tracker may &#8216;recruit&#8217;
additional resources to the swarm. This ability to &#8216;recruit&#8217; =
nodes
helps facilitating the streaming in most p2p existing live streaming =
platforms.
These recruited nodes may be &#8216;super-nodes&#8217; (hosted by the =
provider
or identified as such by the platform), or regular nodes called to hold =
some
segments of data.<o:p></o:p></p>

<p class=3DMsoNormal>&nbsp;<o:p></o:p></p>

<p class=3DMsoNormal>2.&nbsp;&nbsp;&nbsp; Related to the above and yet =
somewhat
more delicate question is whether different nodes have different
&#8216;roles&#8217;. The most obvious example, related to super-nodes, =
is the
need of a consumer node to be aware of the fact that in the retrieved =
peer-list
some of the nodes are indeed super-nodes (thus are reliable, have all =
data,
etc&#8230;). In a different example the recruited nodes may be called to =
behave
differently and e.g. not to fetch the entire media stream/file but only =
parts
of it (VOD p2p streaming is an obvious case for this). <o:p></o:p></p>

<p class=3DMsoNormal>&nbsp;<o:p></o:p></p>

<p class=3DMsoNormal>3.&nbsp; The tracker peer list might also include =
additional
information about the peers in the peer list. Common additional =
information is
the &#8216;zone&#8217; the peers are from (be a &#8216;zone&#8217; the =
country,
or the actual ISP), LAN information, NAT types, &#8216;role&#8217; (see =
my
previous point), and so on. This has to be somehow combined with ALTO =
which
most probably will contribute an In-ISP information. Another related =
point is
whether the peers in the peer-list are =
&#8216;ordered&#8217;.<o:p></o:p></p>

<p class=3DMsoNormal>&nbsp;<o:p></o:p></p>

<p class=3DMsoNormal>4. I&#8217;m less sure how this should be tackled =
(and if at
all under this scope) but to my experience, sometimes, the tracker =
should be
able to &#8216;redirect&#8217; the peer to another channel/swarm. =
Example: the
same channel/event is being broadcasted from multiple encoders (for =
redundancy
and scalability) and the tracker acts also as a &#8216;balancer&#8217; =
to
spread the viewers among the swarms. In some other cases, such as in =
multiple
stream qualities for &#8216;adaptive bandwidth&#8217; (not SVC but =
multiple
channels in different qualities thus the way it is done in Silverlight) =
the
tracker &#8216;picks&#8217; the channel according to pre-defined rules =
or
strategies (e.g. customers that paid for the service will be redirected =
to a
high-quality channel while the non-paying customers to a lower-quality
channel). <o:p></o:p></p>

<p class=3DMsoNormal>&nbsp;<o:p></o:p></p>

<p class=3DMsoNormal>5. To some extent the tracker should also, directly =
or
indirectly, receive feedback, such as status and statistics, from the =
peers.
Basic example is the peer&#8217;s viewing quality. This information, =
usually,
is not being used to help the specific peer but the aggregation of such =
information
helps the platform/tracker to identify &#8216;starvation&#8217; cases =
and as a
result to allocate additional resources to the swarm.<o:p></o:p></p>

<p class=3DMsoNormal>&nbsp;<o:p></o:p></p>

<p class=3DMsoNormal>Regards,<o:p></o:p></p>

<p class=3DMsoNormal>Omer<o:p></o:p></p>

</div>

<br><br>
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From guyingjie@huawei.com  Thu Dec 10 17:55:14 2009
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Date: Fri, 11 Dec 2009 09:52:59 +0800
From: "Y.J. Gu" <guyingjie@huawei.com>
In-reply-to: <1AE07DCFE13D9A42B4EBA60C04A00A5102388075@pooh.RayV.ltd>
To: 'Omer Luzzatti' <omer@rayv.com>, ppsp@ietf.org
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Hi Omer,
Thank you for putting forward these issues to arouse discussions on Tracker
protocol. 
See in line please. 
 

Regards

Yingjie Gu

 


  _____  

From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of Omer
Luzzatti
Sent: Thursday, December 10, 2009 9:50 PM
To: ppsp@ietf.org
Subject: [ppsp] charter discussion, peer<->tracker protocol



Dear all,

A few comments/questions regarding the peer<->tracker protocol:

 

1.    I believe that the protocol should reflect the fact that sometimes the
tracker may 'recruit' additional resources to the swarm. This ability to
'recruit' nodes helps facilitating the streaming in most p2p existing live
streaming platforms. These recruited nodes may be 'super-nodes' (hosted by
the provider or identified as such by the platform), or regular nodes called
to hold some segments of data.

 

Gu yj: Agree. I would say that recruited nodes could also be caches, CDN
servers, or even content servers. These recruited nodes are usually
configured in the Tracker or notified by out-of-band protocol. But it also
could be reflected by Tracker protocol if the recruited peers understand
Tracker protocol. The Tracker protocol (i.e. peer<->tracker protocol) will
respond requesting peers with peerlists including these recruited nodes. 

 

2.    Related to the above and yet somewhat more delicate question is
whether different nodes have different 'roles'. The most obvious example,
related to super-nodes, is the need of a consumer node to be aware of the
fact that in the retrieved peer-list some of the nodes are indeed
super-nodes (thus are reliable, have all data, etc.). In a different example
the recruited nodes may be called to behave differently and e.g. not to
fetch the entire media stream/file but only parts of it (VOD p2p streaming
is an obvious case for this). 

 

Gu yj: This is an interesting point! As for the first example, my concerns
is that if consumer nodes know who are super-nodes and most requests are
send to the super-nodes (because every node want  guaranteed downloading ),
the super-nodes will become hot points and we know what happen next. So I
suspect whether consumer nodes should be able to identify super-nodes. It
could be Tracker's duty to make sure that super-nodes(as well as other
good-quality nodes) are well utilized. As for the second example, I think
it's not what Tracker Protocol should do.

 

3.  The tracker peer list might also include additional information about
the peers in the peer list. Common additional information is the 'zone' the
peers are from (be a 'zone' the country, or the actual ISP), LAN
information, NAT types, 'role' (see my previous point), and so on. This has
to be somehow combined with ALTO which most probably will contribute an
In-ISP information. Another related point is whether the peers in the
peer-list are 'ordered'.

 

Gu yj: I agree with your 'ordered peers' idea. The order can show the
priority that Tracker want peers to understand. As to my best knowledge,
some P2P applications don't follow the order in the peerlist, in which case
'ordered information' may not work well. An optional solution is for Tracker
to respond with separated peerlists. For example, the first part of peerlist
is sent to requesting peers including the most preferred peers, then the
requesting peers will first try the preferred peers. The second part of the
peerlist is then sent to requesting peers after a while, and so on.

 

4. I'm less sure how this should be tackled (and if at all under this scope)
but to my experience, sometimes, the tracker should be able to 'redirect'
the peer to another channel/swarm. Example: the same channel/event is being
broadcasted from multiple encoders (for redundancy and scalability) and the
tracker acts also as a 'balancer' to spread the viewers among the swarms. In
some other cases, such as in multiple stream qualities for 'adaptive
bandwidth' (not SVC but multiple channels in different qualities thus the
way it is done in Silverlight) the tracker 'picks' the channel according to
pre-defined rules or strategies (e.g. customers that paid for the service
will be redirected to a high-quality channel while the non-paying customers
to a lower-quality channel). 

 

Gu yj: Could this redirection be done before requests are sent to Tracker? I
mean the consumer interface of the application can instruct which channel a
peer could watch.

 

5. To some extent the tracker should also, directly or indirectly, receive
feedback, such as status and statistics, from the peers. Basic example is
the peer's viewing quality. This information, usually, is not being used to
help the specific peer but the aggregation of such information helps the
platform/tracker to identify 'starvation' cases and as a result to allocate
additional resources to the swarm.

 

Gu yj: Totally agree!

 

Regards,

Omer





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<BODY lang=EN-US vLink=purple link=blue>
<DIV dir=ltr align=left><SPAN class=873474501-11122009><FONT color=#0000ff 
size=5>Hi Omer,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=873474501-11122009><FONT color=#0000ff 
size=5>Thank you for putting&nbsp;forward these issues to arouse discussions on 
Tracker protocol. </FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=873474501-11122009><FONT color=#0000ff 
size=5>See in line please. </FONT></SPAN></DIV>
<DIV><FONT color=#0000ff size=5></FONT>&nbsp;</DIV>
<DIV align=left><FONT size=2>
<P class=MsoSalutation style="MARGIN: 0cm 0cm 0pt" align=left><SPAN 
style="FONT-FAMILY: &#23435;&#20307;; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial"></SPAN><SPAN 
lang=EN-US><o:p></o:p></SPAN></P>
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style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%; FONT-FAMILY: &#23435;&#20307;; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 10.0pt; mso-bidi-font-family: Arial"><FONT 
size=4>Regards</FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"></FONT><SPAN lang=EN-US 
style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt"><FONT 
size=4>Yingjie Gu</FONT></SPAN></P></DIV>
<DIV>&nbsp;</DIV><BR>
<BLOCKQUOTE 
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid; MARGIN-RIGHT: 0px">
  <DIV class=OutlookMessageHeader lang=zh-cn dir=ltr align=left>
  <HR tabIndex=-1>
  <FONT face=Tahoma size=2><B>From:</B> ppsp-bounces@ietf.org 
  [mailto:ppsp-bounces@ietf.org] <B>On Behalf Of </B>Omer 
  Luzzatti<BR><B>Sent:</B> Thursday, December 10, 2009 9:50 PM<BR><B>To:</B> 
  ppsp@ietf.org<BR><B>Subject:</B> [ppsp] charter discussion, 
  peer&lt;-&gt;tracker protocol<BR></FONT><BR></DIV>
  <DIV></DIV>
  <DIV class=Section1>
  <P class=MsoNormal 
  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
  align=left><SPAN 
  style="FONT-SIZE: 11pt; FONT-FAMILY: Calibri; mso-font-kerning: 0pt">Dear 
  all,<o:p></o:p></SPAN></P>
  <P class=MsoNormal 
  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
  align=left><SPAN 
  style="FONT-SIZE: 11pt; FONT-FAMILY: Calibri; mso-font-kerning: 0pt">A few 
  comments/questions regarding the peer&lt;-&gt;tracker 
  protocol:<o:p></o:p></SPAN></P>
  <P class=MsoNormal 
  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
  align=left><SPAN 
  style="FONT-SIZE: 11pt; FONT-FAMILY: Calibri; mso-font-kerning: 0pt"><o:p>&nbsp;</o:p></SPAN></P>
  <P class=MsoNormal 
  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
  align=left><SPAN 
  style="FONT-SIZE: 11pt; FONT-FAMILY: Calibri; mso-font-kerning: 0pt">1.&nbsp;&nbsp;&nbsp; 
  I believe that the protocol should reflect the fact that sometimes the tracker 
  may &#8216;recruit&#8217; additional resources to the swarm. This ability to &#8216;recruit&#8217; 
  nodes helps facilitating the streaming in most p2p existing live streaming 
  platforms. These recruited nodes may be &#8216;super-nodes&#8217; (hosted by the provider 
  or identified as such by the platform), or regular nodes called to hold some 
  segments of data.<o:p></o:p></SPAN></P>
  <P class=MsoNormal 
  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
  align=left><SPAN 
  style="FONT-SIZE: 11pt; FONT-FAMILY: Calibri; mso-font-kerning: 0pt">&nbsp;<o:p></o:p></SPAN></P>
  <P class=MsoNormal 
  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
  align=left><SPAN 
  style="FONT-SIZE: 11pt; FONT-FAMILY: Calibri; mso-font-kerning: 0pt"><FONT 
  color=#ffff00><FONT color=#ff0000>Gu yj: Agree. I would say that recruited 
  nodes could also be caches, CDN servers, or even content servers. These 
  recruited nodes are usually configured in the Tracker or notified by 
  out-of-band protocol. But it also could be reflected by Tracker protocol if 
  the recruited peers understand Tracker protocol. The Tracker protocol (i.e. 
  peer&lt;-&gt;tracker protocol) will respond requesting peers with peerlists 
  including these recruited nodes.</FONT> <o:p></o:p></FONT></SPAN></P>
  <P class=MsoNormal 
  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
  align=left><SPAN 
  style="FONT-SIZE: 11pt; FONT-FAMILY: Calibri; mso-font-kerning: 0pt"><o:p>&nbsp;</o:p></SPAN></P>
  <P class=MsoNormal 
  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
  align=left><SPAN 
  style="FONT-SIZE: 11pt; FONT-FAMILY: Calibri; mso-font-kerning: 0pt">2.&nbsp;&nbsp;&nbsp; 
  Related to the above and yet somewhat more delicate question is whether 
  different nodes have different &#8216;roles&#8217;. The most obvious example, related to 
  super-nodes, is the need of a consumer node to be aware of the fact that in 
  the retrieved peer-list some of the nodes are indeed super-nodes (thus are 
  reliable, have all data, etc&#8230;). In a different example the recruited nodes may 
  be called to behave differently and e.g. not to fetch the entire media 
  stream/file but only parts of it (VOD p2p streaming is an obvious case for 
  this). <o:p></o:p></SPAN></P>
  <P class=MsoNormal 
  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
  align=left><SPAN 
  style="FONT-SIZE: 11pt; FONT-FAMILY: Calibri; mso-font-kerning: 0pt">&nbsp;<o:p></o:p></SPAN></P>
  <P class=MsoNormal 
  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
  align=left><SPAN 
  style="FONT-SIZE: 11pt; FONT-FAMILY: Calibri; mso-font-kerning: 0pt"><FONT 
  color=#ff0000>Gu yj: This is an interesting point! As for the first example, 
  my concerns is that if consumer nodes know who are super-nodes and most 
  requests are send to the super-nodes (because every node want<SPAN 
  class=873474501-11122009><FONT face="Times New Roman" color=#0000ff 
  size=5>&nbsp;</FONT></SPAN> guaranteed downloading ), the super-nodes will 
  become hot points and we know what happen next. So I suspect whether consumer 
  nodes should be able to identify super-nodes. It could be Tracker&#8217;s duty to 
  make sure that super-nodes(as well as other good-quality nodes) are well 
  utilized. As for the second example, I think it&#8217;s not what Tracker Protocol 
  should do.<o:p></o:p></FONT></SPAN></P>
  <P class=MsoNormal 
  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
  align=left><SPAN 
  style="FONT-SIZE: 11pt; FONT-FAMILY: Calibri; mso-font-kerning: 0pt"><o:p>&nbsp;</o:p></SPAN></P>
  <P class=MsoNormal 
  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
  align=left><SPAN 
  style="FONT-SIZE: 11pt; FONT-FAMILY: Calibri; mso-font-kerning: 0pt">3.&nbsp; 
  The tracker peer list might also include additional information about the 
  peers in the peer list. Common additional information is the &#8216;zone&#8217; the peers 
  are from (be a &#8216;zone&#8217; the country, or the actual ISP), LAN information, NAT 
  types, &#8216;role&#8217; (see my previous point), and so on. This has to be somehow 
  combined with ALTO which most probably will contribute an In-ISP information. 
  Another related point is whether the peers in the peer-list are 
  &#8216;ordered&#8217;.<o:p></o:p></SPAN></P>
  <P class=MsoNormal 
  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
  align=left><SPAN 
  style="FONT-SIZE: 11pt; FONT-FAMILY: Calibri; mso-font-kerning: 0pt"><FONT 
  color=#ff0000>&nbsp;<o:p></o:p></FONT></SPAN></P>
  <P class=MsoNormal 
  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
  align=left><SPAN 
  style="FONT-SIZE: 11pt; FONT-FAMILY: Calibri; mso-font-kerning: 0pt"><FONT 
  color=#ff0000>Gu yj: I agree with your &#8216;ordered peers&#8217; idea. The order can 
  show the priority that Tracker want peers to understand. As to my best 
  knowledge, some P2P applications don&#8217;t follow the order in the peerlist, in 
  which case &#8216;ordered information&#8217; may not work well. An optional solution is 
  for Tracker to respond with separated peerlists. For example, the first part 
  of peerlist is sent to requesting peers including the most preferred peers, 
  then the requesting peers will first try the preferred peers. The second part 
  of the peerlist is then sent to requesting peers after a while, and so 
  on.<o:p></o:p></FONT></SPAN></P>
  <P class=MsoNormal 
  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
  align=left><SPAN 
  style="FONT-SIZE: 11pt; FONT-FAMILY: Calibri; mso-font-kerning: 0pt"><o:p>&nbsp;</o:p></SPAN></P>
  <P class=MsoNormal 
  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
  align=left><SPAN 
  style="FONT-SIZE: 11pt; FONT-FAMILY: Calibri; mso-font-kerning: 0pt">4. I&#8217;m 
  less sure how this should be tackled (and if at all under this scope) but to 
  my experience, sometimes, the tracker should be able to &#8216;redirect&#8217; the peer to 
  another channel/swarm. Example: the same channel/event is being broadcasted 
  from multiple encoders (for redundancy and scalability) and the tracker acts 
  also as a &#8216;balancer&#8217; to spread the viewers among the swarms. In some other 
  cases, such as in multiple stream qualities for &#8216;adaptive bandwidth&#8217; (not SVC 
  but multiple channels in different qualities thus the way it is done in 
  Silverlight) the tracker &#8216;picks&#8217; the channel according to pre-defined rules or 
  strategies (e.g. customers that paid for the service will be redirected to a 
  high-quality channel while the non-paying customers to a lower-quality 
  channel). <o:p></o:p></SPAN></P>
  <P class=MsoNormal 
  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
  align=left><SPAN 
  style="FONT-SIZE: 11pt; FONT-FAMILY: Calibri; mso-font-kerning: 0pt">&nbsp;<o:p></o:p></SPAN></P>
  <P class=MsoNormal 
  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
  align=left><SPAN 
  style="FONT-SIZE: 11pt; FONT-FAMILY: Calibri; mso-font-kerning: 0pt"><FONT 
  color=#ff0000>Gu yj: Could this redirection be done before requests are sent 
  to Tracker? I mean the consumer interface of the application can instruct 
  which channel a peer could watch.<o:p></o:p></FONT></SPAN></P>
  <P class=MsoNormal 
  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
  align=left><SPAN 
  style="FONT-SIZE: 11pt; FONT-FAMILY: Calibri; mso-font-kerning: 0pt"><o:p>&nbsp;</o:p></SPAN></P>
  <P class=MsoNormal 
  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
  align=left><SPAN 
  style="FONT-SIZE: 11pt; FONT-FAMILY: Calibri; mso-font-kerning: 0pt">5. To 
  some extent the tracker should also, directly or indirectly, receive feedback, 
  such as status and statistics, from the peers. Basic example is the peer&#8217;s 
  viewing quality. This information, usually, is not being used to help the 
  specific peer but the aggregation of such information helps the 
  platform/tracker to identify &#8216;starvation&#8217; cases and as a result to allocate 
  additional resources to the swarm.<o:p></o:p></SPAN></P>
  <P class=MsoNormal 
  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
  align=left><SPAN 
  style="FONT-SIZE: 11pt; FONT-FAMILY: Calibri; mso-font-kerning: 0pt">&nbsp;<o:p></o:p></SPAN></P>
  <P class=MsoNormal 
  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
  align=left><SPAN 
  style="FONT-SIZE: 11pt; FONT-FAMILY: Calibri; mso-font-kerning: 0pt"><FONT 
  color=#ff0000>Gu yj: Totally agree!<o:p></o:p></FONT></SPAN></P>
  <P class=MsoNormal 
  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
  align=left><SPAN 
  style="FONT-SIZE: 11pt; FONT-FAMILY: Calibri; mso-font-kerning: 0pt"><o:p>&nbsp;</o:p></SPAN></P>
  <P class=MsoNormal 
  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
  align=left><SPAN 
  style="FONT-SIZE: 11pt; FONT-FAMILY: Calibri; mso-font-kerning: 0pt">Regards,<o:p></o:p></SPAN></P>
  <P class=MsoNormal 
  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" 
  align=left><SPAN 
  style="FONT-SIZE: 11pt; FONT-FAMILY: Calibri; mso-font-kerning: 0pt">Omer<o:p></o:p></SPAN></P>
  <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN 
  style="FONT-SIZE: 12pt; mso-font-kerning: 0pt"><BR><BR><BR><BR><FONT 
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Date: Fri, 11 Dec 2009 10:04:02 +0800
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To: "Omer Luzzatti" <omer@rayv.com>, "ppsp@ietf.org" <ppsp@ietf.org>
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Subject: Re: [ppsp] charter discussion, peer<->tracker protocol
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--=====003_Dragon511101007042_=====--


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Subject: Re: [ppsp] charter discussion, peer<->tracker protocol
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From zhangyunfei@chinamobile.com  Thu Dec 10 18:46:26 2009
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Date: Fri, 11 Dec 2009 10:46:07 +0800
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Subject: Re: [ppsp] charter discussion, peer<->tracker protocol
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--=====003_Dragon845160313120_=====--


From omer@rayv.com  Fri Dec 11 05:03:27 2009
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From: "Omer Luzzatti" <omer@rayv.com>
To: "zhangyunfei" <zhangyunfei@chinamobile.com>, "Y.J. Gu" <guyingjie@huawei.com>, <ppsp@ietf.org>
Subject: Re: [ppsp] charter discussion, peer<->tracker protocol
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Thank you Yunfei and Yingjie, great comments,

Mine inline.

=20

Regards

Omer

=20

From: zhangyunfei [mailto:zhangyunfei@chinamobile.com]=20
Sent: Friday, December 11, 2009 4:17 AM
To: Y.J. Gu; Omer Luzzatti; ppsp@ietf.org
Subject: Re: Re: [ppsp] charter discussion, peer<->tracker protocol

=20

Hi,yingjie,

   Please see inline for the reply.

=20

BR

Yunfei

=20

________________________________

zhangyunfei

2009-12-11

________________________________

=B7=A2=BC=FE=C8=CB=A3=BA Y.J. Gu

=B7=A2=CB=CD=CA=B1=BC=E4=A3=BA 2009-12-11 10:03:47

=CA=D5=BC=FE=C8=CB=A3=BA 'Omer Luzzatti'; ppsp@ietf.org

=B3=AD=CB=CD=A3=BA=20

=D6=F7=CC=E2=A3=BA Re: [ppsp] charter discussion, peer<->tracker =
protocol

=20

Hi Omer,

Thank you for putting forward these issues to arouse discussions on =
Tracker protocol.=20

See in line please.=20

=20

Regards

Yingjie Gu

=20

	=20

=09
________________________________


	From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of =
Omer Luzzatti
	Sent: Thursday, December 10, 2009 9:50 PM
	To: ppsp@ietf.org
	Subject: [ppsp] charter discussion, peer<->tracker protocol

	Dear all,

	A few comments/questions regarding the peer<->tracker protocol:

	=20

	1.    I believe that the protocol should reflect the fact that =
sometimes the tracker may =A1=AErecruit=A1=AF additional resources to =
the swarm. This ability to =A1=AErecruit=A1=AF nodes helps facilitating =
the streaming in most p2p existing live streaming platforms. These =
recruited nodes may be =A1=AEsuper-nodes=A1=AF (hosted by the provider =
or identified as such by the platform), or regular nodes called to hold =
some segments of data.

	=20

	Gu yj: Agree. I would say that recruited nodes could also be caches, =
CDN servers, or even content servers. These recruited nodes are usually =
configured in the Tracker or notified by out-of-band protocol. But it =
also could be reflected by Tracker protocol if the recruited peers =
understand Tracker protocol. The Tracker protocol (i.e. peer<->tracker =
protocol) will respond requesting peers with peerlists including these =
recruited nodes.=20

	=20

	Yunfei=A3=BAYingjie raised another interesting problem.I would like ask =
Omer to clarify his intention? Do you mean "recruiting"some nodes who =
haven't have tracker protocol?Or just "recruting"addtional peers since =
the tracker may not hold the complete set of peers.

	Anyway,Yingjie's comments make me consider another points,can/need we =
add some additional servers(nodes) who may be not PPSP nodes but can =
contribute to PPSP swarm?

	=20

	Omer: Indeed my point was about peers within the network, those that =
=A1=AEknow=A1=AF the PPSP protocol. Yunfei=A1=AFs rightly hints that in =
the case that the tracker holds the complete set of peers this solution =
may not be needed, however, in a multi-channel environment the situation =
gets complex; here=A1=AFs why: whenever one channel with many viewers =
needs more =A1=AEsuper-nodes=A1=AF, these super-nodes, who may have =
helped other channels in the past, should be actively called to help in =
the specific channel in starvation. Thus, in my mind, super-nodes are =
resources that are actively monitored and called to help when they are =
needed for BW or storage.=20

	As for the protocol itself, both could be used: a permanent connection, =
in which the tracker pushes a =A1=AEplease join channelX=A1=AF message =
to the SN, or a heartbeat =A8C =A1=AEam I needed=A1=AF message from the =
SN to the tracker followed by a response from the Tracker. Note that in =
both cases the tracker =A1=AEasks=A1=AF the SN to join a channel.

	=20

	2.    Related to the above and yet somewhat more delicate question is =
whether different nodes have different =A1=AEroles=A1=AF. The most =
obvious example, related to super-nodes, is the need of a consumer node =
to be aware of the fact that in the retrieved peer-list some of the =
nodes are indeed super-nodes (thus are reliable, have all data, =
etc=A1=AD). In a different example the recruited nodes may be called to =
behave differently and e.g. not to fetch the entire media stream/file =
but only parts of it (VOD p2p streaming is an obvious case for this).=20

	=20

	Gu yj: This is an interesting point! As for the first example, my =
concerns is that if consumer nodes know who are super-nodes and most =
requests are send to the super-nodes (because every node want  =
guaranteed downloading ), the super-nodes will become hot points and we =
know what happen next. So I suspect whether consumer nodes should be =
able to identify super-nodes. It could be Tracker=A1=AFs duty to make =
sure that super-nodes(as well as other good-quality nodes) are well =
utilized. As for the second example, I think it=A1=AFs not what Tracker =
Protocol should do.

	Yunfei=A3=BAAgree.

	=20

	Omer: I actually disagree on two grounds (but agree we don=A1=AFt have =
to agree now :-))

	     1) the only way to guarantee service from moment one is to have =
the peers know which are the super-nodes.

	     2) in my mind the only way to protect the super-nodes and to make =
sure they will not be attacked is to let the peers know these are indeed =
the super-nodes and should be approached only in the =A1=AElast =
moment=A1=AF for segments the peer hasn=A1=AFt received from other =
peers. How would a peer know otherwise that a neighbor peer e.g. within =
its LAN (or a strong caching peer provided by the ISP) is one that could =
be used without limitations while super nodes peers are to be approached =
only in =A1=AElast moment=A1=AF. I do assume (and/or securely validate) =
the PPSP clients are =A1=AEtrustable=A1=AF.

	More generally we=A1=AFre touching a point here that seems to be =
crucial - both my arguments above assume PPSP is (indeed ambitiously) =
trying to build a real TV-IP P2P solution and thus should approach =
questions such as startup-time, delays, QoS, and targeted SLA.  If so =
=A1=AEreliable sources=A1=AF of this or that kind must be part of the =
system and (as I tried to convince) =A1=AEknown=A1=AF to the other peers =
as such.

	=20

	3.  The tracker peer list might also include additional information =
about the peers in the peer list. Common additional information is the =
=A1=AEzone=A1=AF the peers are from (be a =A1=AEzone=A1=AF the country, =
or the actual ISP), LAN information, NAT types, =A1=AErole=A1=AF (see my =
previous point), and so on. This has to be somehow combined with ALTO =
which most probably will contribute an In-ISP information. Another =
related point is whether the peers in the peer-list are =
=A1=AEordered=A1=AF.

	=20

	Gu yj: I agree with your =A1=AEordered peers=A1=AF idea. The order can =
show the priority that Tracker want peers to understand. As to my best =
knowledge, some P2P applications don=A1=AFt follow the order in the =
peerlist, in which case =A1=AEordered information=A1=AF may not work =
well. An optional solution is for Tracker to respond with separated =
peerlists. For example, the first part of peerlist is sent to requesting =
peers including the most preferred peers, then the requesting peers will =
first try the preferred peers. The second part of the peerlist is then =
sent to requesting peers after a while, and so on.

	Yunfei:I am not sure about if this is in scope.We can discuss more =
about this.

	Omer: good suggestions. As Yunfei says maybe not in this scope and =
probably we=A1=AFll have to end up with both, namely =A1=AEsuggested =
order not mandatory=A1=AF and ability to send them all in one response =
or in various lists.

	=20

	4. I=A1=AFm less sure how this should be tackled (and if at all under =
this scope) but to my experience, sometimes, the tracker should be able =
to =A1=AEredirect=A1=AF the peer to another channel/swarm. Example: the =
same channel/event is being broadcasted from multiple encoders (for =
redundancy and scalability) and the tracker acts also as a =
=A1=AEbalancer=A1=AF to spread the viewers among the swarms. In some =
other cases, such as in multiple stream qualities for =A1=AEadaptive =
bandwidth=A1=AF (not SVC but multiple channels in different qualities =
thus the way it is done in Silverlight) the tracker =A1=AEpicks=A1=AF =
the channel according to pre-defined rules or strategies (e.g. customers =
that paid for the service will be redirected to a high-quality channel =
while the non-paying customers to a lower-quality channel).=20

	=20

	Gu yj: Could this redirection be done before requests are sent to =
Tracker? I mean the consumer interface of the application can instruct =
which channel a peer could watch.

	Yunfei:The senario may be as follows,the source doesn't excpect the =
burst and the "split" occurs dynamically.

	Omer: Gu yj is right, the meta-requests could be done before to another =
=A1=AEsuper tracker=A1=AF service and then, only when the peer knows the =
=A1=AEexact channel=A1=AF, approaching the tracker for the peer-list. =
So, probably not in this scope at all.

	=20

	5. To some extent the tracker should also, directly or indirectly, =
receive feedback, such as status and statistics, from the peers. Basic =
example is the peer=A1=AFs viewing quality. This information, usually, =
is not being used to help the specific peer but the aggregation of such =
information helps the platform/tracker to identify =
=A1=AEstarvation=A1=AF cases and as a result to allocate additional =
resources to the swarm.

	=20

	Gu yj: Totally agree!

	=20

	Regards,

	Omer

=09
=09
=09
=09
	=
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=09
=09
=09
	=
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*************************************************************************=
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This footnote confirms that this email message has been scanned by
PineApp Mail-SeCure for the presence of malicious code, vandals & =
computer viruses.
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<body lang=3DEN-US link=3Dblue vlink=3Dpurple>

<div class=3DSection1 style=3D'layout-grid:15.6pt'>

<p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Thank you Yunfei and Yingjie, great =
comments,<o:p></o:p></span></p>

<p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Mine inline.<o:p></o:p></span></p>

<p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>&nbsp;<o:p></o:p></span></p>

<p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Regards<o:p></o:p></span></p>

<p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Omer<o:p></o:p></span></p>

<p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<div>

<div style=3D'border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt =
0in 0in 0in'>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><b><span
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span>=
</b><span
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'> =
zhangyunfei
[mailto:zhangyunfei@chinamobile.com] <br>
<b>Sent:</b> Friday, December 11, 2009 4:17 AM<br>
<b>To:</b> Y.J. Gu; Omer Luzzatti; ppsp@ietf.org<br>
<b>Subject:</b> Re: Re: [ppsp] charter discussion, peer&lt;-&gt;tracker
protocol<o:p></o:p></span></p>

</div>

</div>

<p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left'><o:p>&nbsp;</o:p></p>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
10.0pt;font-family:"Verdana","sans-serif";color:blue'>Hi,yingjie,</span><=
span
style=3D'font-size:12.0pt;font-family:SimSun'><o:p></o:p></span></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
10.0pt;font-family:"Verdana","sans-serif";color:blue'>&nbsp;&nbsp; =
Please see
inline for the reply.</span><span =
style=3D'font-size:12.0pt;font-family:SimSun'><o:p></o:p></span></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
12.0pt;font-family:SimSun'>&nbsp;<o:p></o:p></span></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
10.0pt;font-family:"Verdana","sans-serif";color:blue'>BR</span><span
style=3D'font-size:12.0pt;font-family:SimSun'><o:p></o:p></span></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
10.0pt;font-family:"Verdana","sans-serif";color:blue'>Yunfei</span><span
style=3D'font-size:12.0pt;font-family:SimSun'><o:p></o:p></span></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
12.0pt;font-family:SimSun'>&nbsp;<o:p></o:p></span></p>

</div>

<div class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><span
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif"'>

<hr size=3D2 width=3D122 style=3D'width:91.5pt' align=3Dcenter>

</span></div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
10.0pt;font-family:"Verdana","sans-serif";color:silver'>zhangyunfei</span=
><span
style=3D'font-size:12.0pt;font-family:SimSun;color:silver'><o:p></o:p></s=
pan></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
10.0pt;font-family:"Verdana","sans-serif";color:silver'>2009-12-11</span>=
<span
style=3D'font-size:12.0pt;font-family:SimSun'><o:p></o:p></span></p>

</div>

<div>

<div class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><span
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif"'>

<hr size=3D2 width=3D"100%" align=3Dcenter>

</span></div>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left'><strong><span lang=3DZH-CN
style=3D'font-size:10.0pt;font-family:SimSun'>=B7=A2=BC=FE=C8=CB=A3=BA</s=
pan></strong><span
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif"'> Y.J. =
Gu</span><span
style=3D'font-size:12.0pt;font-family:SimSun'><o:p></o:p></span></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left'><strong><span lang=3DZH-CN
style=3D'font-size:10.0pt;font-family:SimSun'>=B7=A2=CB=CD=CA=B1=BC=E4=A3=
=BA</span></strong><span
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif"'>
2009-12-11&nbsp;10:03:47</span><span =
style=3D'font-size:12.0pt;font-family:SimSun'><o:p></o:p></span></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left'><strong><span lang=3DZH-CN
style=3D'font-size:10.0pt;font-family:SimSun'>=CA=D5=BC=FE=C8=CB=A3=BA</s=
pan></strong><span
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif"'> 'Omer =
Luzzatti';
ppsp@ietf.org</span><span =
style=3D'font-size:12.0pt;font-family:SimSun'><o:p></o:p></span></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left'><strong><span lang=3DZH-CN
style=3D'font-size:10.0pt;font-family:SimSun'>=B3=AD=CB=CD=A3=BA</span></=
strong><span
lang=3DZH-CN =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif"'> =
</span><span
style=3D'font-size:12.0pt;font-family:SimSun'><o:p></o:p></span></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left'><strong><span lang=3DZH-CN
style=3D'font-size:10.0pt;font-family:SimSun'>=D6=F7=CC=E2=A3=BA</span></=
strong><span
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif"'> Re: =
[ppsp] charter
discussion, peer&lt;-&gt;tracker protocol</span><span =
style=3D'font-size:12.0pt;
font-family:SimSun'><o:p></o:p></span></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
12.0pt;font-family:SimSun'>&nbsp;<o:p></o:p></span></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
18.0pt;font-family:"Verdana","sans-serif";color:blue'>Hi =
Omer,</span><span
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif"'><o:p></o:p>=
</span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
18.0pt;font-family:"Verdana","sans-serif";color:blue'>Thank you for
putting&nbsp;forward these issues to arouse discussions on Tracker =
protocol. </span><span
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif"'><o:p></o:p>=
</span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
18.0pt;font-family:"Verdana","sans-serif";color:blue'>See in line =
please. </span><span
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif"'><o:p></o:p>=
</span></p>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
10.0pt;font-family:"Verdana","sans-serif"'>&nbsp;<o:p></o:p></span></p>

</div>

<p class=3DMsoNormal><span =
style=3D'font-size:13.5pt;font-family:"Arial","sans-serif"'>Regards</span=
><o:p></o:p></p>

<p class=3DMsoNormal><span =
style=3D'font-size:13.5pt;font-family:"Arial","sans-serif"'>Yingjie
Gu</span><o:p></o:p></p>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
10.0pt;font-family:"Verdana","sans-serif"'>&nbsp;<o:p></o:p></span></p>

</div>

<blockquote style=3D'border:none;border-left:solid blue =
1.5pt;padding:0in 0in 0in 4.0pt;
margin-left:3.75pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'=
>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
10.0pt;font-family:"Verdana","sans-serif"'><o:p>&nbsp;</o:p></span></p>

<div class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><span
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif"'>

<hr size=3D2 width=3D"100%" align=3Dcenter>

</span></div>

<p class=3DMsoNormal align=3Dleft =
style=3D'margin-bottom:12.0pt;text-align:left'><b><span
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span>=
</b><span
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] <b>On Behalf Of =
</b>Omer
Luzzatti<br>
<b>Sent:</b> Thursday, December 10, 2009 9:50 PM<br>
<b>To:</b> ppsp@ietf.org<br>
<b>Subject:</b> [ppsp] charter discussion, peer&lt;-&gt;tracker =
protocol</span><span
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif"'><o:p></o:p>=
</span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif"'>Dear =
all,</span><o:p></o:p></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif"'>A few comments/questions =
regarding
the peer&lt;-&gt;tracker protocol:</span><o:p></o:p></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif"'>&nbsp;</span><o:p></o:p></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif"'>1.&nbsp;&nbsp;&nbsp; I =
believe that
the protocol should reflect the fact that sometimes the tracker may =
=A1=AErecruit=A1=AF
additional resources to the swarm. This ability to =A1=AErecruit=A1=AF =
nodes helps
facilitating the streaming in most p2p existing live streaming =
platforms. These
recruited nodes may be =A1=AEsuper-nodes=A1=AF (hosted by the provider =
or identified as
such by the platform), or regular nodes called to hold some segments of =
data.</span><o:p></o:p></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif"'>&nbsp;</span><o:p></o:p></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif";color:red'>Gu yj: Agree. I =
would say
that recruited nodes could also be caches, CDN servers, or even content
servers. These recruited nodes are usually configured in the Tracker or
notified by out-of-band protocol. But it also could be reflected by =
Tracker
protocol if the recruited peers understand Tracker protocol. The Tracker
protocol (i.e. peer&lt;-&gt;tracker protocol) will respond requesting =
peers
with peerlists including these recruited nodes.</span><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif";color:yellow'> =
</span><o:p></o:p></p>

<p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left'>&nbsp;<o:p></o:p></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif";color:black;background:yellow'>=
Yunfei</span><span
lang=3DZH-CN =
style=3D'font-size:11.0pt;font-family:SimSun;color:black;background:
yellow'>=A3=BA</span><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";
color:black;background:yellow'>Yingjie raised another interesting =
problem.I
would like ask Omer to clarify his intention? Do you mean
&quot;recruiting&quot;some nodes who haven't have tracker protocol?Or =
just
&quot;recruting&quot;addtional peers since the tracker may not hold the
complete set of peers.</span><o:p></o:p></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif";background:yellow'>Anyway,Yingj=
ie's
comments make me consider another points,can/need we add some
additional&nbsp;servers(nodes) who may be not PPSP nodes but can =
contribute to
PPSP swarm?<o:p></o:p></span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p>&nbsp;</o:p=
></span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Omer: Indeed my =
point
was about peers within the network, those that =A1=AEknow=A1=AF the PPSP =
protocol.
Yunfei=A1=AFs rightly hints that in the case that the tracker holds the =
complete set
of peers this solution may not be needed, however, in a multi-channel
environment the situation gets complex; here=A1=AFs why: whenever one =
channel with
many viewers needs more =A1=AEsuper-nodes=A1=AF, these super-nodes, who =
may have helped other
channels in the past, should be actively called to help in the specific =
channel
in starvation. Thus, in my mind, super-nodes are resources that are =
actively
monitored and called to help when they are needed for BW or storage. =
<o:p></o:p></span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>As for the =
protocol
itself, both could be used: a permanent connection, in which the tracker =
pushes
a =A1=AEplease join channelX=A1=AF message to the SN, or a heartbeat =
=A8C =A1=AEam I needed=A1=AF
message from the SN to the tracker followed by a response from the =
Tracker.
Note that in both cases the tracker =A1=AEasks=A1=AF the SN to join a =
channel.<o:p></o:p></span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif"'>&nbsp;</span><o:p></o:p></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif"'>2.&nbsp;&nbsp;&nbsp; Related =
to the
above and yet somewhat more delicate question is whether different nodes =
have
different =A1=AEroles=A1=AF. The most obvious example, related to =
super-nodes, is the
need of a consumer node to be aware of the fact that in the retrieved =
peer-list
some of the nodes are indeed super-nodes (thus are reliable, have all =
data,
etc=A1=AD). In a different example the recruited nodes may be called to =
behave differently
and e.g. not to fetch the entire media stream/file but only parts of it =
(VOD
p2p streaming is an obvious case for this). </span><o:p></o:p></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif"'>&nbsp;</span><o:p></o:p></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif";color:red'>Gu yj: This is an
interesting point! As for the first example, my concerns is that if =
consumer
nodes know who are super-nodes and most requests are send to the =
super-nodes
(because every node want</span><span =
style=3D'font-size:18.0pt;color:blue'>&nbsp;</span><span
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:red'>
guaranteed downloading ), the super-nodes will become hot points and we =
know
what happen next. So I suspect whether consumer nodes should be able to
identify super-nodes. It could be Tracker=A1=AFs duty to make sure that
super-nodes(as well as other good-quality nodes) are well utilized. As =
for the
second example, I think it=A1=AFs not what Tracker Protocol should =
do.</span><o:p></o:p></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif";color:red;background:yellow'>Yu=
nfei</span><span
lang=3DZH-CN =
style=3D'font-size:11.0pt;font-family:SimSun;color:red;background:
yellow'>=A3=BA</span><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";
color:red;background:yellow'>Agree.</span><span =
style=3D'font-size:11.0pt;
font-family:"Calibri","sans-serif";background:yellow'><o:p></o:p></span><=
/p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p>&nbsp;</o:p=
></span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Omer: I =
actually
disagree on two grounds (but agree we don=A1=AFt have to agree now =
:-))<o:p></o:p></span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>&nbsp;&nbsp;&nbs=
p;&nbsp;
1) the only way to guarantee service from moment one is to have the =
peers know
which are the super-nodes.<o:p></o:p></span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>&nbsp;&nbsp;&nbs=
p;&nbsp;
2) in my mind the only way to protect the super-nodes and to make sure =
they
will not be attacked is to let the peers know these are indeed the =
super-nodes
and should be approached only in the =A1=AElast moment=A1=AF for =
segments the peer hasn=A1=AFt
received from other peers. How would a peer know otherwise that a =
neighbor peer
e.g. within its LAN (or a strong caching peer provided by the ISP) is =
one that
could be used without limitations while super nodes peers are to be =
approached
only in =A1=AElast moment=A1=AF. I do assume (and/or securely validate) =
the PPSP clients
are =A1=AEtrustable=A1=AF.<o:p></o:p></span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>More generally =
we=A1=AFre
touching a point here that seems to be crucial - both my arguments above =
assume
PPSP is (indeed ambitiously) trying to build a real TV-IP P2P solution =
and thus
should approach questions such as startup-time, delays, QoS, and =
targeted
SLA.&nbsp; If so =A1=AEreliable sources=A1=AF of this or that kind must =
be part of the
system and (as I tried to convince) =A1=AEknown=A1=AF to the other peers =
as such.<o:p></o:p></span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif"'>&nbsp;</span><o:p></o:p></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif"'>3.&nbsp; The tracker peer =
list might
also include additional information about the peers in the peer list. =
Common
additional information is the =A1=AEzone=A1=AF the peers are from (be a =
=A1=AEzone=A1=AF the
country, or the actual ISP), LAN information, NAT types, =
=A1=AErole=A1=AF (see my
previous point), and so on. This has to be somehow combined with ALTO =
which
most probably will contribute an In-ISP information. Another related =
point is
whether the peers in the peer-list are =
=A1=AEordered=A1=AF.</span><o:p></o:p></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif";color:red'>&nbsp;</span><o:p></=
o:p></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif";color:red'>Gu yj: I agree with =
your
=A1=AEordered peers=A1=AF idea. The order can show the priority that =
Tracker want peers
to understand. As to my best knowledge, some P2P applications don=A1=AFt =
follow the
order in the peerlist, in which case =A1=AEordered information=A1=AF may =
not work well.
An optional solution is for Tracker to respond with separated peerlists. =
For
example, the first part of peerlist is sent to requesting peers =
including the
most preferred peers, then the requesting peers will first try the =
preferred
peers. The second part of the peerlist is then sent to requesting peers =
after a
while, and so on.</span><o:p></o:p></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif";color:red;background:yellow'>Yu=
nfei:I
am not sure about if this is in scope.We can discuss more about =
this.</span><span
style=3D'color:#1F497D'><o:p></o:p></span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Omer: good
suggestions. As Yunfei says maybe not in this scope and probably =
we=A1=AFll have to
end up with both, namely =A1=AEsuggested order not mandatory=A1=AF and =
ability to send
them all in one response or in various lists.</span><span =
style=3D'color:#1F497D'><o:p></o:p></span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p>&nbsp;</o:p=
></span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif"'>4. I=A1=AFm less sure how =
this should be
tackled (and if at all under this scope) but to my experience, =
sometimes, the
tracker should be able to =A1=AEredirect=A1=AF the peer to another =
channel/swarm.
Example: the same channel/event is being broadcasted from multiple =
encoders
(for redundancy and scalability) and the tracker acts also as a =
=A1=AEbalancer=A1=AF to
spread the viewers among the swarms. In some other cases, such as in =
multiple
stream qualities for =A1=AEadaptive bandwidth=A1=AF (not SVC but =
multiple channels in
different qualities thus the way it is done in Silverlight) the tracker =
=A1=AEpicks=A1=AF
the channel according to pre-defined rules or strategies (e.g. customers =
that
paid for the service will be redirected to a high-quality channel while =
the
non-paying customers to a lower-quality channel). </span><o:p></o:p></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif"'>&nbsp;</span><o:p></o:p></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif";color:red'>Gu yj: Could this
redirection be done before requests are sent to Tracker? I mean the =
consumer
interface of the application can instruct which channel a peer could =
watch.</span><o:p></o:p></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif";color:red;background:yellow'>Yu=
nfei:The
senario may be as follows,the source doesn't excpect the burst and the =
<strong><span
style=3D'font-family:"Calibri","sans-serif"'>&quot;</span></strong></span=
><strong><span
style=3D'color:red;background:yellow'>split&quot; occurs =
dynamically.</span></strong><o:p></o:p></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Omer: Gu yj is =
right,
the meta-requests could be done before to another =A1=AEsuper =
tracker=A1=AF service and
then, only when the peer knows the =A1=AEexact channel=A1=AF, =
approaching the tracker for
the peer-list. So, probably not in this scope at =
all.<o:p></o:p></span></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif"'>&nbsp;</span><o:p></o:p></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif"'>5. To some extent the tracker =
should
also, directly or indirectly, receive feedback, such as status and =
statistics,
from the peers. Basic example is the peer=A1=AFs viewing quality. This =
information,
usually, is not being used to help the specific peer but the aggregation =
of
such information helps the platform/tracker to identify =
=A1=AEstarvation=A1=AF cases and
as a result to allocate additional resources to the =
swarm.</span><o:p></o:p></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif"'>&nbsp;</span><o:p></o:p></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif";color:red'>Gu yj: Totally =
agree!</span><o:p></o:p></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif"'>&nbsp;</span><o:p></o:p></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif"'>Regards,</span><o:p></o:p></p>=


<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
11.0pt;font-family:"Calibri","sans-serif"'>Omer</span><o:p></o:p></p>

<p class=3DMsoNormal><span style=3D'font-size:12.0pt'><br>
<br>
<br>
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<p class=3DMsoNormal style=3D'margin-bottom:12.0pt'><br>
<br>
<br>
*************************************************************************=
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</blockquote>

</div>

<p class=3DMsoNormal align=3Dleft =
style=3D'margin-bottom:12.0pt;text-align:left'><span
style=3D'font-size:12.0pt;font-family:SimSun'><br>
<br>
<br>
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This footnote confirms that this email message has been scanned by<br>
PineApp Mail-SeCure for the presence of malicious code, vandals &amp; =
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From omer@rayv.com  Fri Dec 11 05:20:41 2009
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I agree with Kent as well and indeed gossip protocols could be utilized.

=20

Moreover, indeed building a scalable multi-channel environment solution =
with specific QoS (delays, startup times, quality) is a challenge on the =
tracker side as well. Yunfei, if you=A1=AFd like I can try and sketch =
the components/algorithms/architecture of such a =A1=AEtracker=A1=AF for =
the March meeting.

=20

Regards

Omer

=20

From: zhangyunfei [mailto:zhangyunfei@chinamobile.com]=20
Sent: Friday, December 11, 2009 4:46 AM
To: Kang Heng WU; Omer Luzzatti; ppsp@ietf.org
Subject: Re: RE: [ppsp] charter discussion, peer<->tracker protocol

=20

Hi Kent,

    I agree with your points.One point to stress is that the trackers =
may be a "cluster"of nodes or "distributed"node sets. So the bottleneck =
problem can be avoided in some sense.And the "additional resource =
recruting"is the complementary means. Basically we rely on the peers to =
find the resource themselves.

    The evalution of how much the workload such intelligent algorithm =
can bring to the tracker is an interesting point for PPSP group and we =
need more detailed work to support.

=20

BR

Yunfei

=20

________________________________

zhangyunfei

2009-12-11

________________________________

=B7=A2=BC=FE=C8=CB=A3=BA Kang Heng WU

=B7=A2=CB=CD=CA=B1=BC=E4=A3=BA 2009-12-11 10:43:18

=CA=D5=BC=FE=C8=CB=A3=BA zhangyunfei; Omer Luzzatti; ppsp@ietf.org

=B3=AD=CB=CD=A3=BA=20

=D6=F7=CC=E2=A3=BA RE: [ppsp] charter discussion, peer<->tracker =
protocol

=20

Hi Yunfei and Omer,

=20

Tracker will be a bottleneck in p2p network. If the intelligence =
algorithm runs in tracker side, the startup performance of peer will be =
good. But the supporting users of the tracker will be small. Maybe some =
intelligence algorithm can run in peer side. The peers can gossip each =
other and find out a good solution. My detail comments are as follows.

=20

Thanks,

Kent

=20

-----Original Message-----
From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of =
zhangyunfei
Sent: Friday, December 11, 2009 10:04 AM
To: Omer Luzzatti; ppsp@ietf.org
Subject: Re: [ppsp] charter discussion, peer<->tracker protocol

=20

Dear Omer,

   Thanks for your comments.It's very informative and instructive.Please =
see inline for the reply.Thanks again!

=20

BR

Yunfei

=20

________________________________

zhangyunfei

2009-12-11

________________________________

=B7=A2=BC=FE=C8=CB=A3=BA Omer Luzzatti

=B7=A2=CB=CD=CA=B1=BC=E4=A3=BA 2009-12-10 22:08:12

=CA=D5=BC=FE=C8=CB=A3=BA ppsp@ietf.org

=B3=AD=CB=CD=A3=BA=20

=D6=F7=CC=E2=A3=BA [ppsp] charter discussion, peer<->tracker protocol

=20

Dear all,

A few comments/questions regarding the peer<->tracker protocol:

=20

1.    I believe that the protocol should reflect the fact that sometimes =
the tracker may =A1=AErecruit=A1=AF additional resources to the swarm. =
This ability to =A1=AErecruit=A1=AF nodes helps facilitating the =
streaming in most p2p existing live streaming platforms. These recruited =
nodes may be =A1=AEsuper-nodes=A1=AF (hosted by the provider or =
identified as such by the platform), or regular nodes called to hold =
some segments of data.

 Sound interesting.If we have such mechanism, the streaming quality in =
the starting time may be better.The key is how to balance this =
"proactive" message and the "feedback" periodic message from the peer to =
the tracker. Do they have the same effect?Or better if combined?=20

            =20

2.    Related to the above and yet somewhat more delicate question is =
whether different nodes have different =A1=AEroles=A1=AF. The most =
obvious example, related to super-nodes, is the need of a consumer node =
to be aware of the fact that in the retrieved peer-list some of the =
nodes are indeed super-nodes (thus are reliable, have all data, =
etc=A1=AD). In a different example the recruited nodes may be called to =
behave differently and e.g. not to fetch the entire media stream/file =
but only parts of it (VOD p2p streaming is an obvious case for this).

I think the peer tracker protocol shall covers this message.=20

=20

3.  The tracker peer list might also include additional information =
about the peers in the peer list. Common additional information is the =
=A1=AEzone=A1=AF the peers are from (be a =A1=AEzone=A1=AF the country, =
or the actual ISP), LAN information, NAT types, =A1=AErole=A1=AF (see my =
previous point), and so on. This has to be somehow combined with ALTO =
which most probably will contribute an In-ISP information. Another =
related point is whether the peers in the peer-list are =
=A1=AEordered=A1=AF.

We share the same opinion on this. Some "zone" or "network location"info =
shall be reflected in PPSP information.

As for the "order"of the peers in the peerlist, this seems a problem out =
of the scope of PPSP.PPSP just deals with information exchange. The =
following action done by the tracker seems vendor dependent,e.g, what =
order of the returned peers . Different p2p streaming vendors can do =
this differently.

            Kent: The tracker provides the simple statistic information. =
The peer can use this kind simple statistic to find out a set of good =
peers.

 4  4. I=A1=AFm less sure how this should be tackled (and if at all =
under this scope) but to my experience, sometimes, the tracker should be =
able to =A1=AEredirect=A1=AF the peer to another channel/swarm. Example: =
the same channel/event is being broadcasted from multiple encoders (for =
redundancy and scalability) and the tracker acts also as a =
=A1=AEbalancer=A1=AF to spread the viewers among the swarms. In some =
other cases, such as in multiple stream qualities for =A1=AEadaptive =
bandwidth=A1=AF (not SVC but multiple channels in different qualities =
thus the way it is done in Silverlight) the tracker =A1=AEpicks=A1=AF =
the channel according to pre-defined rules or strategies (e.g. customers =
that paid for the service will be redirected to a high-quality channel =
while the non-paying customers to a lower-quality channel).=20

      Very interesting!I think this can be a very good feather if the =
tracker has such ability when we want to run a real P2P streaming =
system.I'd like to see more discussion about this in the mailing list.

Kent: About the =A1=B0redirect=A1=B1, can the tracker reply =
=A1=B0several qualities channels=A1=B1 to peer. The peer can select the =
suitable channel according to its network environment or user habit.=20

=20

5. To some extent the tracker should also, directly or indirectly, =
receive feedback, such as status and statistics, from the peers. Basic =
example is the peer=A1=AFs viewing quality. This information, usually, =
is not being used to help the specific peer but the aggregation of such =
information helps the platform/tracker to identify =
=A1=AEstarvation=A1=AF cases and as a result to allocate additional =
resources to the swarm.

=20

I agree.We address the same point in the problem statement draft and I =
think this can be done in the second stage.

=20

Regards,

Omer





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________________________________

This message (including any attachments) is for the named addressee(s)'s =
use only. It may contain sensitive, confidential, private proprietary or =
legally privileged information intended for a specific individual and =
purpose, and is protected by law. If you are not the intended recipient, =
please immediately delete it and all copies of it from your system, =
destroy any hard copies of it and notify the sender. Any use, =
disclosure, copying, or distribution of this message and/or any =
attachments is strictly prohi bited.=20

________________________________

=20





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<body lang=3DEN-US link=3Dblue vlink=3Dpurple>

<div class=3DSection1 style=3D'layout-grid:15.6pt'>

<p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I agree with Kent as well and indeed gossip protocols =
could be utilized.<o:p></o:p></span></p>

<p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Moreover, indeed building a scalable multi-channel =
environment
solution with specific QoS (delays, startup times, quality) is a =
challenge on
the tracker side as well. Yunfei, if you=A1=AFd like I can try and =
sketch the components/algorithms/architecture
of such a =A1=AEtracker=A1=AF for the March =
meeting.<o:p></o:p></span></p>

<p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Regards<o:p></o:p></span></p>

<p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Omer<o:p></o:p></span></p>

<p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<div>

<div style=3D'border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt =
0in 0in 0in'>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><b><span
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span>=
</b><span
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'> =
zhangyunfei
[mailto:zhangyunfei@chinamobile.com] <br>
<b>Sent:</b> Friday, December 11, 2009 4:46 AM<br>
<b>To:</b> Kang Heng WU; Omer Luzzatti; ppsp@ietf.org<br>
<b>Subject:</b> Re: RE: [ppsp] charter discussion, peer&lt;-&gt;tracker
protocol<o:p></o:p></span></p>

</div>

</div>

<p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left'><o:p>&nbsp;</o:p></p>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
10.0pt;font-family:"Verdana","sans-serif";color:blue'>Hi =
Kent,</span><span
style=3D'font-size:12.0pt;font-family:SimSun'><o:p></o:p></span></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
10.0pt;font-family:"Verdana","sans-serif";color:blue'>&nbsp;&nbsp;&nbsp; =
I
agree with your points.One point to stress is that the trackers may be a
&quot;cluster&quot;of nodes or &quot;distributed&quot;node sets. So the
bottleneck problem can be avoided in some sense.And the &quot;additional
resource recruting&quot;is the complementary means. Basically we rely on =
the
peers to find the resource themselves.</span><span =
style=3D'font-size:12.0pt;
font-family:SimSun'><o:p></o:p></span></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
10.0pt;font-family:"Verdana","sans-serif";color:blue'>&nbsp;&nbsp;&nbsp; =
The
evalution of how much the workload such intelligent algorithm can bring =
to the
tracker is an interesting point for PPSP group and we need more detailed =
work
to support.</span><span =
style=3D'font-size:12.0pt;font-family:SimSun'><o:p></o:p></span></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
12.0pt;font-family:SimSun'>&nbsp;<o:p></o:p></span></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
10.0pt;font-family:"Verdana","sans-serif";color:blue'>BR</span><span
style=3D'font-size:12.0pt;font-family:SimSun'><o:p></o:p></span></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
10.0pt;font-family:"Verdana","sans-serif";color:blue'>Yunfei</span><span
style=3D'font-size:12.0pt;font-family:SimSun'><o:p></o:p></span></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
12.0pt;font-family:SimSun'>&nbsp;<o:p></o:p></span></p>

</div>

<div class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><span
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif"'>

<hr size=3D2 width=3D122 style=3D'width:91.5pt' align=3Dcenter>

</span></div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
10.0pt;font-family:"Verdana","sans-serif";color:silver'>zhangyunfei</span=
><span
style=3D'font-size:12.0pt;font-family:SimSun;color:silver'><o:p></o:p></s=
pan></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
10.0pt;font-family:"Verdana","sans-serif";color:silver'>2009-12-11</span>=
<span
style=3D'font-size:12.0pt;font-family:SimSun'><o:p></o:p></span></p>

</div>

<div>

<div class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><span
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif"'>

<hr size=3D2 width=3D"100%" align=3Dcenter>

</span></div>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left'><strong><span lang=3DZH-CN
style=3D'font-size:10.0pt;font-family:SimSun'>=B7=A2=BC=FE=C8=CB=A3=BA</s=
pan></strong><span
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif"'> Kang Heng =
WU</span><span
style=3D'font-size:12.0pt;font-family:SimSun'><o:p></o:p></span></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left'><strong><span lang=3DZH-CN
style=3D'font-size:10.0pt;font-family:SimSun'>=B7=A2=CB=CD=CA=B1=BC=E4=A3=
=BA</span></strong><span
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif"'>
2009-12-11&nbsp;10:43:18</span><span =
style=3D'font-size:12.0pt;font-family:SimSun'><o:p></o:p></span></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left'><strong><span lang=3DZH-CN
style=3D'font-size:10.0pt;font-family:SimSun'>=CA=D5=BC=FE=C8=CB=A3=BA</s=
pan></strong><span
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif"'> =
zhangyunfei; Omer
Luzzatti; ppsp@ietf.org</span><span =
style=3D'font-size:12.0pt;font-family:SimSun'><o:p></o:p></span></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left'><strong><span lang=3DZH-CN
style=3D'font-size:10.0pt;font-family:SimSun'>=B3=AD=CB=CD=A3=BA</span></=
strong><span
lang=3DZH-CN =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif"'> =
</span><span
style=3D'font-size:12.0pt;font-family:SimSun'><o:p></o:p></span></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left'><strong><span lang=3DZH-CN
style=3D'font-size:10.0pt;font-family:SimSun'>=D6=F7=CC=E2=A3=BA</span></=
strong><span
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif"'> RE: =
[ppsp] charter
discussion, peer&lt;-&gt;tracker protocol</span><span =
style=3D'font-size:12.0pt;
font-family:SimSun'><o:p></o:p></span></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
12.0pt;font-family:SimSun'>&nbsp;<o:p></o:p></span></p>

</div>

<div>

<p class=3DMsoNormal style=3D'layout-grid-mode:char'><span =
style=3D'font-size:10.0pt;
font-family:"Arial","sans-serif";color:navy'>Hi Yunfei and =
Omer,</span><o:p></o:p></p>

<p class=3DMsoNormal =
style=3D'layout-grid-mode:char'>&nbsp;<o:p></o:p></p>

<p class=3DMsoNormal style=3D'layout-grid-mode:char'><span =
style=3D'font-size:10.0pt;
font-family:"Arial","sans-serif";color:navy'>Tracker will be a =
bottleneck in
p2p network. If the intelligence algorithm runs in tracker side, the =
startup
performance of peer will be good. But the supporting users of the =
tracker will
be small. Maybe some intelligence algorithm can run in peer side. The =
peers can
gossip each other and find out a good solution. My detail comments are =
as
follows.</span><o:p></o:p></p>

<p class=3DMsoNormal =
style=3D'layout-grid-mode:char'>&nbsp;<o:p></o:p></p>

<p class=3DMsoNormal style=3D'layout-grid-mode:char'><span =
style=3D'font-size:10.0pt;
font-family:"Arial","sans-serif";color:navy'>Thanks,</span><o:p></o:p></p=
>

<p class=3DMsoNormal style=3D'layout-grid-mode:char'><span =
style=3D'font-size:10.0pt;
font-family:"Arial","sans-serif";color:navy'>Kent</span><o:p></o:p></p>

<p class=3DMsoNormal =
style=3D'layout-grid-mode:char'>&nbsp;<o:p></o:p></p>

<p class=3DMsoNormal align=3Dleft =
style=3D'margin-left:.5in;text-align:left;
layout-grid-mode:char'><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>-----Origina=
l
Message-----<br>
<b>From:</b> ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] <b>On =
Behalf
Of </b>zhangyunfei<br>
<b>Sent:</b> Friday, December 11, 2009 10:04 AM<br>
<b>To:</b> Omer Luzzatti; ppsp@ietf.org<br>
<b>Subject:</b> Re: [ppsp] charter discussion, peer&lt;-&gt;tracker =
protocol</span><o:p></o:p></p>

<p class=3DMsoNormal =
style=3D'margin-left:.5in;layout-grid-mode:char'>&nbsp;<o:p></o:p></p>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'margin-left:.5in;text-align:left;
layout-grid-mode:char'><span =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";
color:blue'>Dear Omer,</span><o:p></o:p></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'margin-left:.5in;text-align:left;
layout-grid-mode:char'><span =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";
color:blue'>&nbsp;&nbsp; Thanks for&nbsp;your comments.It's very =
informative
and instructive.Please see inline for the reply.Thanks =
again!</span><o:p></o:p></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'margin-left:.5in;text-align:left;
layout-grid-mode:char'>&nbsp;<o:p></o:p></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'margin-left:.5in;text-align:left;
layout-grid-mode:char'><span =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";
color:blue'>BR</span><o:p></o:p></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'margin-left:.5in;text-align:left;
layout-grid-mode:char'><span =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";
color:blue'>Yunfei</span><o:p></o:p></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'margin-left:.5in;text-align:left;
layout-grid-mode:char'>&nbsp;<o:p></o:p></p>

</div>

<div style=3D'margin-left:.5in'>

<div class=3DMsoNormal align=3Dcenter =
style=3D'text-align:center;layout-grid-mode:
char'><span =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif"'>

<hr size=3D2 width=3D122 style=3D'width:91.5pt' align=3Dcenter>

</span></div>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'margin-left:.5in;text-align:left;
layout-grid-mode:char'><span =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";
color:silver'>zhangyunfei</span><o:p></o:p></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'margin-left:.5in;text-align:left;
layout-grid-mode:char'><span =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";
color:silver'>2009-12-11</span><o:p></o:p></p>

</div>

<div>

<div style=3D'margin-left:.5in'>

<div class=3DMsoNormal align=3Dcenter =
style=3D'text-align:center;layout-grid-mode:
char'><span =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif"'>

<hr size=3D2 width=3D"100%" align=3Dcenter>

</span></div>

</div>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'margin-left:.5in;text-align:left;
layout-grid-mode:char'><strong><span lang=3DZH-CN =
style=3D'font-size:10.0pt;
font-family:SimSun'>=B7=A2=BC=FE=C8=CB=A3=BA</span></strong><span =
style=3D'font-size:10.0pt;
font-family:"Verdana","sans-serif"'> Omer Luzzatti</span><o:p></o:p></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'margin-left:.5in;text-align:left;
layout-grid-mode:char'><strong><span lang=3DZH-CN =
style=3D'font-size:10.0pt;
font-family:SimSun'>=B7=A2=CB=CD=CA=B1=BC=E4=A3=BA</span></strong><span =
style=3D'font-size:10.0pt;
font-family:"Verdana","sans-serif"'> =
2009-12-10&nbsp;22:08:12</span><o:p></o:p></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'margin-left:.5in;text-align:left;
layout-grid-mode:char'><strong><span lang=3DZH-CN =
style=3D'font-size:10.0pt;
font-family:SimSun'>=CA=D5=BC=FE=C8=CB=A3=BA</span></strong><span =
style=3D'font-size:10.0pt;
font-family:"Verdana","sans-serif"'> ppsp@ietf.org</span><o:p></o:p></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'margin-left:.5in;text-align:left;
layout-grid-mode:char'><strong><span lang=3DZH-CN =
style=3D'font-size:10.0pt;
font-family:SimSun'>=B3=AD=CB=CD=A3=BA</span></strong><span lang=3DZH-CN =
style=3D'font-size:10.0pt;
font-family:"Verdana","sans-serif"'> </span><o:p></o:p></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'margin-left:.5in;text-align:left;
layout-grid-mode:char'><strong><span lang=3DZH-CN =
style=3D'font-size:10.0pt;
font-family:SimSun'>=D6=F7=CC=E2=A3=BA</span></strong><span =
style=3D'font-size:10.0pt;
font-family:"Verdana","sans-serif"'> [ppsp] charter discussion,
peer&lt;-&gt;tracker protocol</span><o:p></o:p></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'margin-left:.5in;text-align:left;
layout-grid-mode:char'>&nbsp;<o:p></o:p></p>

</div>

<div>

<p class=3DMsoNormal =
style=3D'margin-left:.5in;layout-grid-mode:char'>Dear =
all,<o:p></o:p></p>

<p class=3DMsoNormal style=3D'margin-left:.5in;layout-grid-mode:char'>A =
few
comments/questions regarding the peer&lt;-&gt;tracker =
protocol:<o:p></o:p></p>

<p class=3DMsoNormal =
style=3D'margin-left:.5in;layout-grid-mode:char'>&nbsp;<o:p></o:p></p>

<p class=3DMsoNormal =
style=3D'margin-left:.5in;layout-grid-mode:char'>1.&nbsp;&nbsp;&nbsp;
I believe that the protocol should reflect the fact that sometimes the =
tracker
may =A1=AErecruit=A1=AF additional resources to the swarm. This ability =
to =A1=AErecruit=A1=AF
nodes helps facilitating the streaming in most p2p existing live =
streaming
platforms. These recruited nodes may be =A1=AEsuper-nodes=A1=AF (hosted =
by the provider
or identified as such by the platform), or regular nodes called to hold =
some
segments of data.<o:p></o:p></p>

<p class=3DMsoNormal =
style=3D'margin-left:.5in;layout-grid-mode:char'><span
style=3D'background:yellow'>&nbsp;Sound interesting.If we have such =
mechanism,
the streaming&nbsp;quality in the&nbsp;starting time may be better.The =
key is
how to balance this &quot;proactive&quot; message and the =
&quot;feedback&quot;
periodic message&nbsp;from the peer to the tracker.&nbsp;Do they =
have&nbsp;the
same effect?Or better if combined?</span><span =
style=3D'font-size:10.0pt'>&nbsp;</span><o:p></o:p></p>

<p class=3DMsoNormal style=3D'layout-grid-mode:char'><span =
style=3D'font-size:10.0pt;
font-family:"Arial","sans-serif";color:navy'>&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
&nbsp;</span><o:p></o:p></p>

<p class=3DMsoNormal =
style=3D'margin-left:.5in;layout-grid-mode:char'>2.&nbsp;&nbsp;&nbsp;
Related to the above and yet somewhat more delicate question is whether
different nodes have different =A1=AEroles=A1=AF. The most obvious =
example, related to
super-nodes, is the need of a consumer node to be aware of the fact that =
in the
retrieved peer-list some of the nodes are indeed super-nodes (thus are
reliable, have all data, etc=A1=AD). In a different example the =
recruited nodes may
be called to behave differently and e.g. not to fetch the entire media
stream/file but only parts of it (VOD p2p streaming is an obvious case =
for
this).<o:p></o:p></p>

<p class=3DMsoNormal =
style=3D'margin-left:.5in;layout-grid-mode:char'><span
style=3D'background:yellow'>I think the peer tracker protocol shall =
covers this
message.</span><span =
style=3D'font-size:10.0pt'>&nbsp;</span><o:p></o:p></p>

<p class=3DMsoNormal =
style=3D'margin-left:.5in;layout-grid-mode:char'>&nbsp;<o:p></o:p></p>

<p class=3DMsoNormal =
style=3D'margin-left:.5in;layout-grid-mode:char'>3.&nbsp; The
tracker peer list might also include additional information about the =
peers in
the peer list. Common additional information is the =A1=AEzone=A1=AF the =
peers are from
(be a =A1=AEzone=A1=AF the country, or the actual ISP), LAN information, =
NAT types,
=A1=AErole=A1=AF (see my previous point), and so on. This has to be =
somehow combined with
ALTO which most probably will contribute an In-ISP information. Another =
related
point is whether the peers in the peer-list are =
=A1=AEordered=A1=AF.<o:p></o:p></p>

<p class=3DMsoNormal =
style=3D'margin-left:.5in;layout-grid-mode:char'><span
style=3D'font-size:12.0pt;font-family:"Calibri","sans-serif";color:black;=

background:yellow'>We&nbsp;share the same opinion on this. Some
&quot;zone&quot; or &quot;network location&quot;info shall be reflected =
in PPSP
information.</span><o:p></o:p></p>

<p class=3DMsoNormal =
style=3D'margin-left:.5in;layout-grid-mode:char'><span
style=3D'font-size:12.0pt;font-family:"Calibri","sans-serif";background:y=
ellow'>As
for the &quot;order&quot;of the peers in the peerlist, this&nbsp;seems a
problem out of the scope of PPSP.PPSP just deals with information =
exchange. The
following action done by the tracker seems vendor dependent,e.g, what =
order of
the returned peers .&nbsp;Different p2p streaming vendors can do this
differently.</span><o:p></o:p></p>

<p class=3DMsoNormal style=3D'layout-grid-mode:char'><span =
style=3D'font-size:10.0pt;
font-family:"Arial","sans-serif";color:navy'>&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Kent: The tracker provides the simple statistic information. The peer =
can use
this kind simple statistic to find out a set of good =
peers.</span><o:p></o:p></p>

<p class=3DMsoListParagraph =
style=3D'margin-left:.5in;text-indent:-.25in;
layout-grid-mode:char'><span =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif"'>&nbsp;4&nbs=
p;
4. I=A1=AFm less sure how this should be tackled (and if at all under =
this scope)
but to my experience, sometimes, the tracker should be able to =
=A1=AEredirect=A1=AF the
peer to another channel/swarm. Example: the same channel/event is being
broadcasted from multiple encoders (for redundancy and scalability) and =
the
tracker acts also as a =A1=AEbalancer=A1=AF to spread the viewers among =
the swarms. In
some other cases, such as in multiple stream qualities for =
=A1=AEadaptive bandwidth=A1=AF
(not SVC but multiple channels in different qualities thus the way it is =
done
in Silverlight) the tracker =A1=AEpicks=A1=AF the channel according to =
pre-defined rules
or strategies (e.g. customers that paid for the service will be =
redirected to a
high-quality channel while the non-paying customers to a lower-quality
channel). <o:p></o:p></span></p>

<p class=3DMsoListParagraph =
style=3D'margin-left:.5in;text-indent:-.25in;
layout-grid-mode:char'><span =
style=3D'font-family:"Calibri","sans-serif";
color:red'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span =
style=3D'font-size:10.0pt;
font-family:"Calibri","sans-serif";color:black'> <span =
style=3D'background:yellow'>Very
interesting!I think this can be a very good feather if the tracker has =
such
ability when we want to run a real P2P streaming system.I'd like to see =
more
discussion about this in the mailing list.</span></span><span =
style=3D'font-size:
10.0pt;font-family:"Verdana","sans-serif"'><o:p></o:p></span></p>

<p class=3DMsoNormal =
style=3D'text-indent:.5in;layout-grid-mode:char'><span
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'>Ke=
nt:
About the =A1=B0redirect=A1=B1, can the tracker reply =A1=B0several =
qualities channels=A1=B1 to
peer. The peer can select the suitable channel according to its network
environment or user habit. </span><o:p></o:p></p>

<p class=3DMsoListParagraph =
style=3D'margin-left:.5in;text-indent:-.25in;
layout-grid-mode:char'><span =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif"'>&nbsp;<o:p>=
</o:p></span></p>

<p class=3DMsoNormal style=3D'margin-left:.5in;layout-grid-mode:char'>5. =
To some
extent the tracker should also, directly or indirectly, receive =
feedback, such
as status and statistics, from the peers. Basic example is the =
peer=A1=AFs viewing
quality. This information, usually, is not being used to help the =
specific peer
but the aggregation of such information helps the platform/tracker to =
identify
=A1=AEstarvation=A1=AF cases and as a result to allocate additional =
resources to the
swarm.<o:p></o:p></p>

<p class=3DMsoNormal =
style=3D'margin-left:.5in;layout-grid-mode:char'>&nbsp;<o:p></o:p></p>

<p class=3DMsoNormal =
style=3D'margin-left:.5in;layout-grid-mode:char'><span
style=3D'background:yellow'>I agree.We address the same point in the =
problem
statement draft and I think this can be done in the second =
stage.</span><o:p></o:p></p>

<p class=3DMsoNormal =
style=3D'margin-left:.5in;layout-grid-mode:char'>&nbsp;<o:p></o:p></p>

<p class=3DMsoNormal =
style=3D'margin-left:.5in;layout-grid-mode:char'>Regards,<o:p></o:p></p>

<p class=3DMsoNormal =
style=3D'margin-left:.5in;layout-grid-mode:char'>Omer<o:p></o:p></p>

<p class=3DMsoNormal align=3Dleft =
style=3D'mso-margin-top-alt:0in;margin-right:0in;
margin-bottom:12.0pt;margin-left:.5in;text-align:left;layout-grid-mode:ch=
ar'><span
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif"'><br>
<br>
<br>
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style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif"'>

<hr size=3D2 width=3D"100%" align=3Dcenter>

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<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><span =
style=3D'font-size:
8.0pt;font-family:"Arial","sans-serif"'>This message (including any
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From guyingjie@huawei.com  Sun Dec 13 17:17:56 2009
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Date: Mon, 14 Dec 2009 09:17:21 +0800
From: "Y.J. Gu" <guyingjie@huawei.com>
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Hi all,
I am now working on the PPSP Tracker protocol draft and I sincerely hope
more people would contribute to the draft. Are there anybody else would like
to work together on the draft? 
Thank you very much.
 

Regards

Yingjie Gu

 

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<DIV dir=ltr align=left><FONT face="Times New Roman" color=#0000ff size=5><SPAN 
class=887320601-14122009>Hi all,</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face="Times New Roman" color=#0000ff size=5><SPAN 
class=887320601-14122009>I am now working on&nbsp;the&nbsp;PPSP Tracker protocol 
draft and I sincerely hope more people would contribute to the draft. Are there 
anybody else would like to work together on the draft? </SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face="Times New Roman" color=#0000ff size=5><SPAN 
class=887320601-14122009></SPAN></FONT><FONT face="Times New Roman" 
color=#0000ff size=5><SPAN class=887320601-14122009></SPAN></FONT><FONT 
face="Times New Roman" color=#0000ff size=5><SPAN class=887320601-14122009>Thank 
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Subject: Re: [ppsp] charter discussion, peer<->tracker protocol
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List-Id: discussing to draw up peer to peer streaming protocol <ppsp.ietf.org>
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From zhijia08@gmail.com  Sun Dec 20 22:40:23 2009
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From: zhijia chen <zhijia08@gmail.com>
To: ppsp@ietf.org
Content-Type: multipart/alternative; boundary=0016e644c18ebf23e6047b375b84
Subject: Re: [ppsp] Call for contribution.
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--0016e644c18ebf23e6047b375b84
Content-Type: text/plain; charset=GB2312
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Hi,

    We are engineers from  and would like to contribute on the PPSP Tracker
protocol draft in proper way.
    Force Innovation Technology Inc=A3=A8Beijing=A3=A9 is one pioneer in gl=
obal
Peer-to-Peer(P2P) Video streaming market, one of the most professional
enterprise-grade and telecom-class P2P VOD/live broadcasting streaming
solution provider for worldwide customers, and also the international
industry-leading mobile streaming product and solution provider. The Force
P2P streaming system achieves the 3-screen streaming solution strategy,
which can widely support terminals like traditional PC machine, IPTV Set-To=
p
Box (STB) and mobile phones, etc.
      ForceTech is currently among the top tier as one of the most
professional commercial P2P streaming software technology providers in Chin=
a
and has successfully supported the live broadcasting/VOD applications with
nearly one million of concurrent users for tens of Medias for providing
national program like Online Spring Festival Gala of China, Confucius
Culture Festival, XTV Space, Hbol Online, etc.In comparison with the
Microsoft MediaServer system, with the same hardware environment, the Force
P2P Streaming system can scale 3-5 times in VOD service and 5-10 times in
live video broadcasting service.
    We would like to share both our system experience and research
explorations to make possible contribution to such interesting work.



Dr. Chen Zhijia
*Force Innovation Technology Inc. *


=3D=3D=3D=3D=3D=3D =CF=C2=C3=E6=CA=C7=BB=D8=B8=B4=D3=CA=BC=FE =3D=3D=3D=3D=
=3D=3D
------------------------------
*=B7=A2=BC=FE=C8=CB: *zhangyunfei<zhangyunfei@chinamobile.com>
*=CA=D5=BC=FE=C8=CB: *czj<czj@forcetech.net>
*=B3=AD =CB=CD: *
*=D6=F7 =CC=E2: *Fw: Call for contribution.
*=CA=B1 =BC=E4: *2009-12-18 16:19



 ------------------------------
 zhangyunfei
2009-12-18
 ------------------------------
 *=B7=A2=BC=FE=C8=CB=A3=BA* Y.J. Gu
*=B7=A2=CB=CD=CA=B1=BC=E4=A3=BA* 2009-12-14 09:26:16
*=CA=D5=BC=FE=C8=CB=A3=BA* ppsp@ietf.org
*=B3=AD=CB=CD=A3=BA* 'zhangyunfei'
*=D6=F7=CC=E2=A3=BA* Call for contribution.

 Hi all,
I am now working on the PPSP Tracker protocol draft and I sincerely hope
more people would contribute to the draft. Are there anybody else would lik=
e
to work together on the draft?
Thank you very much.


Regards

Yingjie Gu

--0016e644c18ebf23e6047b375b84
Content-Type: text/html; charset=GB2312
Content-Transfer-Encoding: quoted-printable

<font face=3D"Verdana">Hi,<br><br>&nbsp;&nbsp;&nbsp; We&nbsp;are&nbsp;engin=
eers from &nbsp;and would like to contribute on the PPSP Tracker protocol d=
raft in proper way.<br>&nbsp;&nbsp;&nbsp; </font><span lang=3D"EN-US" style=
=3D"FONT-SIZE: 10.5pt; FONT-FAMILY: &#39;Times New Roman&#39;,&#39;serif&#3=
9;; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: =CB=CE=CC=E5; mso-=
font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN;=
 mso-bidi-language: AR-SA">Force Innovation Technology Inc</span><span styl=
e=3D"FONT-SIZE: 10.5pt; FONT-FAMILY: =CB=CE=CC=E5; mso-bidi-font-size: 12.0=
pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language=
: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: &#39;Times New Ro=
man&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;; mso-bidi-font-f=
amily: &#39;Times New Roman&#39;">=A3=A8</span><span lang=3D"EN-US" style=
=3D"FONT-SIZE: 10.5pt; FONT-FAMILY: &#39;Times New Roman&#39;,&#39;serif&#3=
9;; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: =CB=CE=CC=E5; mso-=
font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN;=
 mso-bidi-language: AR-SA">Beijing</span><span style=3D"FONT-SIZE: 10.5pt; =
FONT-FAMILY: =CB=CE=CC=E5; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.=
0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-langua=
ge: AR-SA; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font=
-family: &#39;Times New Roman&#39;; mso-bidi-font-family: &#39;Times New Ro=
man&#39;">=A3=A9</span><span lang=3D"EN-US" style=3D"FONT-SIZE: 10.5pt; FON=
T-FAMILY: &#39;Times New Roman&#39;,&#39;serif&#39;; mso-bidi-font-size: 12=
.0pt; mso-fareast-font-family: =CB=CE=CC=E5; mso-font-kerning: 1.0pt; mso-a=
nsi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"=
> is&nbsp;one pioneer in global Peer-to-Peer(P2P) Video&nbsp;streaming mark=
et, one of the most professional enterprise-grade and telecom-class P2P VOD=
/live broadcasting streaming solution provider for worldwide customers, and=
 also the international industry-leading mobile streaming product and solut=
ion provider.&nbsp;<span lang=3D"EN-US">The Force P2P streaming system achi=
eves the 3-screen streaming solution strategy, which can widely support ter=
minals like traditional PC machine, IPTV Set-Top Box (STB) and mobile phone=
s, etc.&nbsp;</span><br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <span lang=3D"EN-US" style=3D"FONT-SIZE: 10.=
5pt; FONT-FAMILY: &#39;Times New Roman&#39;,&#39;serif&#39;; mso-bidi-font-=
size: 12.0pt; mso-fareast-font-family: =CB=CE=CC=E5; mso-font-kerning: 1.0p=
t; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language=
: AR-SA">ForceTech is currently among the top tier as one of the most profe=
ssional commercial P2P streaming software technology providers in China and=
 has successfully supported the live broadcasting/VOD applications with nea=
rly one million of concurrent users for tens of Medias for providing nation=
al program like Online Spring Festival Gala of China, Confucius Culture Fes=
tival, XTV Space, Hbol Online, etc.<span lang=3D"EN-US">In comparison with =
the Microsoft MediaServer system, with the same hardware environment, the F=
orce P2P Streaming system can scale 3-5 times in VOD service and 5-10 times=
 in live video broadcasting service.&nbsp;</span></span><br>
&nbsp;&nbsp;&nbsp; We would like to share both our system experience and re=
search explorations to make possible contribution to such interesting work.=
<br></span><br><br><br><font face=3D"Verdana">Dr. Chen Zhijia<br></font><fo=
nt face=3D"Arial"><span lang=3D"EN-US" style=3D"FONT-SIZE: 16pt; FONT-FAMIL=
Y: &#39;HelveticaNeue-LightCond&#39;,&#39;sans-serif&#39;; mso-fareast-font=
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N; mso-bidi-language: AR-SA; mso-bidi-font-family: HelveticaNeue-LightCond"=
><em>Force Innovation Technology Inc. </em></span><br>
<br><br>=3D=3D=3D=3D=3D=3D =CF=C2=C3=E6=CA=C7=BB=D8=B8=B4=D3=CA=BC=FE =3D=
=3D=3D=3D=3D=3D<br>
<hr>
<b>=B7=A2=BC=FE=C8=CB: </b>zhangyunfei&lt;<a href=3D"mailto:zhangyunfei@chi=
namobile.com">zhangyunfei@chinamobile.com</a>&gt;<br><b>=CA=D5=BC=FE=C8=CB:=
 </b>czj&lt;<a href=3D"mailto:czj@forcetech.net">czj@forcetech.net</a>&gt; =
<br><b>=B3=AD =CB=CD: </b><br><b>=D6=F7 =CC=E2: </b>Fw: Call for contributi=
on. <br>
<b>=CA=B1 =BC=E4: </b>2009-12-18 16:19 <br><br>
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<div><font face=3D"Verdana" size=3D"2"></font>&nbsp;</div>
<div align=3D"left">
<div align=3D"left"><font face=3D"Verdana" size=3D"2">
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<div><font color=3D"#c0c0c0"><font face=3D"Verdana" size=3D"2">zhangyunfei<=
/font></font></div>
<div><font face=3D"Verdana" size=3D"2">2009-12-18</font></div></div>
<div><font face=3D"Verdana" size=3D"2">
<hr>
</font></div>
<div><font face=3D"Verdana"><font size=3D"2"><strong>=B7=A2=BC=FE=C8=CB=A3=
=BA</strong> Y.J. Gu</font></font></div>
<div><font face=3D"Verdana"><font size=3D"2"><strong>=B7=A2=CB=CD=CA=B1=BC=
=E4=A3=BA</strong> 2009-12-14&nbsp;09:26:16</font></font></div>
<div><font face=3D"Verdana"><font size=3D"2"><strong>=CA=D5=BC=FE=C8=CB=A3=
=BA</strong> <a href=3D"mailto:ppsp@ietf.org">ppsp@ietf.org</a></font></fon=
t></div>
<div><font face=3D"Verdana"><font size=3D"2"><strong>=B3=AD=CB=CD=A3=BA</st=
rong> &#39;zhangyunfei&#39;</font></font></div>
<div><font face=3D"Verdana"><font size=3D"2"><strong>=D6=F7=CC=E2=A3=BA</st=
rong> Call for contribution.</font></font></div>
<div><font face=3D"Verdana" size=3D"2"></font>&nbsp;</div>
<div><font face=3D"Verdana" size=3D"2">
<div dir=3D"ltr" align=3D"left"><font face=3D"Times New Roman" color=3D"#00=
00ff" size=3D"5"><span class=3D"887320601-14122009">Hi all,</span></font></=
div>
<div dir=3D"ltr" align=3D"left"><font face=3D"Times New Roman" color=3D"#00=
00ff" size=3D"5"><span class=3D"887320601-14122009">I am now working on&nbs=
p;the&nbsp;PPSP Tracker protocol draft and I sincerely hope more people wou=
ld contribute to the draft. Are there anybody else would like to work toget=
her on the draft? </span></font></div>

<div dir=3D"ltr" align=3D"left"><font face=3D"Times New Roman" color=3D"#00=
00ff" size=3D"5"><span class=3D"887320601-14122009"></span></font><font fac=
e=3D"Times New Roman" color=3D"#0000ff" size=3D"5"><span class=3D"887320601=
-14122009"></span></font><font face=3D"Times New Roman" color=3D"#0000ff" s=
ize=3D"5"><span class=3D"887320601-14122009">Thank you very much.</span></f=
ont></div>

<div><font face=3D"Times New Roman" color=3D"#0000ff" size=3D"5"></font>&nb=
sp;</div>
<div align=3D"left"><font size=3D"2">
<p class=3D"MsoSalutation" style=3D"MARGIN: 0cm 0cm 0pt" align=3D"left"><sp=
an style=3D"FONT-FAMILY: =CB=CE=CC=E5; mso-ascii-font-family: Arial; mso-ha=
nsi-font-family: Arial"></span><span lang=3D"EN-US"></span></p>
<p class=3D"MsoNormal" style=3D"MARGIN: 0cm 0cm 0pt" align=3D"left"><span s=
tyle=3D"FONT-SIZE: 9pt; LINE-HEIGHT: 150%; FONT-FAMILY: =CB=CE=CC=E5; mso-b=
idi-font-size: 10.0pt; mso-ascii-font-family: Arial; mso-hansi-font-family:=
 Arial; mso-bidi-font-family: Arial"><font size=3D"4">Regards</font></span>=
</p>

<p class=3D"MsoNormal" style=3D"MARGIN: 0cm 0cm 0pt"></p></font><span lang=
=3D"EN-US" style=3D"FONT-SIZE: 9pt; LINE-HEIGHT: 150%; FONT-FAMILY: Arial; =
mso-bidi-font-size: 10.0pt"><font size=3D"4">Yingjie Gu</font></span></div>
<div><font face=3D"Times New Roman" color=3D"#0000ff" size=3D"5"></font>&nb=
sp;</div></font></div>

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--=====003_Dragon157031318171_=====--


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Subject: Re: [ppsp] BOF follow-up
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Hi,

I'd like to check where we are with the BOF followup. Is there an =
updated charter proposal and/or updated drafts yet?

Thanks,
Lars

On 2009-11-18, at 16:55, Eggert Lars (Nokia-NRC/Espoo) wrote:

> Hi,
>=20
> I wanted to send a quick follow-up now that the BOF has happened, to =
let you all know where I think we are.
>=20
> My take away was that the BOF went well, and there is interest and =
energy in the community to take on some work in this space. On the other =
hand, the discussion made it clear that the charter proposal needs some =
additional revising (stressing the realtime aspects of the system, =
further narrowing of scope, etc.) before we can decide if we want to go =
ahead with it.
>=20
> I'd like to ask the BOF chairs (Yunfei and Gonzalo) to continue to =
lead the needed follow-up discussion that will get us to the point where =
PPSP can be chartered.
>=20
> Lars<smime.p7s><ATT00001..txt>


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To: "Lars Eggert" <lars.eggert@nokia.com>, "ppsp@ietf.org" <ppsp@ietf.org>
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--=====003_Dragon074716787254_=====--


From lars.eggert@nokia.com  Mon Dec 21 01:16:36 2009
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Hi,

On 2009-12-21, at 10:37, zhangyunfei wrote:
> Do you have any suggestions on continuing to move PPSP forward?

I don't have any further suggestions, you guys have done a really good =
job already.

My plan is to take the revised charter proposal to the IESG to start =
chartering discussions.

Lars=

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Subject: [ppsp] ppsp revised charter proposal
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 of=20
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2010.:)</SPAN></FONT></P>
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Hope&nbsp;PPSP can have a great development in the new year with all of you=
r=20
participation and contribution.</SPAN></FONT></P><FONT size=3D2><SPAN lang=
=3DEN-US=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Verdana">
<P class=3DMsoNormal style=3D"TEXT-ALIGN: left" align=3Dleft><FONT size=3D2=
><SPAN=20
lang=3DEN-US style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Verdana">The main modif=
ications=20
are:<o:p></o:p></SPAN></FONT></P>
<DIV>
<P class=3DMsoNormal style=3D"TEXT-ALIGN: left" align=3Dleft><FONT size=3D2=
><SPAN=20
lang=3DEN-US style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Verdana">1)<?xml:namesp=
ace=20
prefix =3D st1 ns =3D "urn:schemas-microsoft-com:office:smarttags" /><st1:p=
lace=20
w:st=3D"on">Para</st1:place> 2:<o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=3DMsoNormal style=3D"TEXT-ALIGN: left" align=3Dleft><FONT size=3D2=
><SPAN=20
lang=3DEN-US style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Verdana">a)wish to make=
 it=20
better understood about what the tracker protocol and the peer protocol dif=
fer=20
in and reply the BOF comments that the two protocols may be a single=20
one;<o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=3DMsoNormal style=3D"TEXT-ALIGN: left" align=3Dleft><FONT size=3D2=
><SPAN=20
lang=3DEN-US style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Verdana">b)Add the NAT =
issue=20
raised in the BOF;<o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=3DMsoNormal style=3D"TEXT-ALIGN: left" align=3Dleft><FONT size=3D2=
><SPAN=20
lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Verdana">2)Para3:<o:p></o:p></SPAN><=
/FONT></P></DIV>
<DIV>
<P class=3DMsoNormal style=3D"TEXT-ALIGN: left" align=3Dleft><FONT size=3D2=
><SPAN=20
lang=3DEN-US style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Verdana">a)=20
Para3-</SPAN></FONT><FONT face=3DVerdana size=3D2><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">bullet 4,adding the gossip=20
communication in peer protocol as discussed in the mailing=20
list;</SPAN></FONT><FONT size=3D2><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Verdana"><o:p></o:p></SPAN></FONT></=
P></DIV>
<DIV>
<P class=3DMsoNormal style=3D"TEXT-ALIGN: left" align=3Dleft><FONT face=3DV=
erdana=20
size=3D2><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">b)Para3-bullet7, deleted as=20
suggested by Lars that optional part can be detered until we think it=20
clearer;</SPAN></FONT><FONT size=3D2><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Verdana"><o:p></o:p></SPAN></FONT></=
P></DIV>
<DIV>
<P class=3DMsoNormal style=3D"TEXT-ALIGN: left" align=3Dleft><FONT face=3DV=
erdana=20
size=3D2><SPAN lang=3DEN-US style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">3=
)Para4,=20
adding LEDBAT as reference raised in the BOF.</SPAN></FONT><FONT size=3D2><=
SPAN=20
lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Verdana"><o:p></o:p></SPAN></FONT></=
P></DIV>
<DIV>
<P class=3DMsoNormal style=3D"TEXT-ALIGN: left" align=3Dleft><FONT face=3DV=
erdana=20
size=3D2><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">4)Para5,deleting privay raise=
d in=20
the BOF.</SPAN></FONT><FONT size=3D2><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Verdana"><o:p></o:p></SPAN></FONT></=
P></DIV>
<DIV>
<P class=3DMsoNormal style=3D"TEXT-ALIGN: left" align=3Dleft><FONT face=3DV=
erdana=20
size=3D2><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">5)Para6:</SPAN></FONT><FONT=20
size=3D2><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Verdana"><o:p></o:p></SPAN></FONT></=
P></DIV>
<DIV>
<P class=3DMsoNormal style=3D"TEXT-ALIGN: left" align=3Dleft><FONT face=3DV=
erdana=20
size=3D2><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">a)bullet1:Adding the descript=
ion of=20
considering the NAT traversal and the multiple stream senario as discussed =
in=20
the BOF and mailing list.</SPAN></FONT><FONT size=3D2><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Verdana"><o:p></o:p></SPAN></FONT></=
P></DIV></SPAN></FONT>
<P class=3DMsoNormal style=3D"TEXT-ALIGN: left" align=3Dleft><FONT size=3D2=
><SPAN=20
lang=3DEN-US style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Verdana">BR</SPAN></FON=
T></P>
<P class=3DMsoNormal style=3D"TEXT-ALIGN: left" align=3Dleft><FONT size=3D2=
><SPAN=20
lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Verdana">Yunfei</SPAN></FONT><FONT=20
size=3D2><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Verdana">&nbsp;</SPAN></FONT></P>
<P class=3DMsoNormal style=3D"TEXT-ALIGN: left" align=3Dleft><FONT size=3D2=
><SPAN=20
lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Verdana">***************************=
**********************************************</SPAN></FONT></P><FONT=20
face=3DVerdana size=3D2><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Verdana">
<P class=3DMsoNormal=20
style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-margin-top-alt: auto; m=
so-margin-bottom-alt: auto; mso-pagination: widow-orphan; mso-outline-level=
: 2"=20
align=3Dleft><B><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 18pt; FONT-FAMILY: 'Courier New'; mso-font-kerning: 0pt=
; mso-no-proof: yes"><?xml:namespace=20
prefix =3D v ns =3D "urn:schemas-microsoft-com:vml" /><v:shapetype id=3D=5F=
x0000=5Ft74=20
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joinstyle=3D"miter"></v:stroke><v:path textboxrect=3D"5037,2277,16557,13677=
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o:connecttype=3D"custom" gradientshapeok=3D"t"></v:path></v:shapetype><v:sh=
ape=20
id=3DDtsShapeName=20
style=3D"MARGIN-TOP: -136.8pt; Z-INDEX: 1; VISIBILITY: hidden; MARGIN-LEFT:=
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alt=3D"EURGDB8431G1584CC67EG90B@088C046089C:\89K8N[72207!!!!!!BIHO@]{72207!=
!!1@@51B401107DBC6C7D6qqrq!bi`suds!w1/0/enb!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
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type=3D"#=5Fx0000=5Ft74" o:spid=3D"=5Fx0000=5Fs1026"><?xml:namespace prefix=
 =3D w ns =3D=20
"urn:schemas-microsoft-com:office:word"=20
/><w:anchorlock></w:anchorlock></v:shape></SPAN></B><B><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 18pt; FONT-FAMILY: 'Courier New'; mso-font-kerning: 0pt=
"><FONT=20
size=3D2>Description of PPSP Working Group:<o:p></o:p></FONT></SPAN></B></P>
<P class=3DMsoNormal=20
style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orpha=
n"=20
align=3Dleft><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kerning: 0pt=
"><FONT=20
size=3D2>The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) =
is=20
chartered to develop standard signaling protocols (called PPSP protocols) f=
or=20
multiple types of entities (e.g. intelligent endpoints, caches, content=20
distribution network nodes, and/or other edge devices) to participate in P2=
P=20
streaming systems in both fixed and mobile=20
Internet.<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal=20
style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orpha=
n"=20
align=3Dleft><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kerning: 0pt=
"><BR><FONT=20
size=3D2>There are two kinds of components in PPSP protocols, i.e., =A1=B0t=
rackers=A1=B1 and=20
=A1=B0peers=A1=B1. PPSP protocols include the PPSP tracker protocol =A8C a =
signaling protocol=20
between =A1=B0trackers=A1=B1 and =A1=B0peers=A1=B1, and the PPSP peer proto=
col =A8C a signaling=20
protocol among =A1=B0peers=A1=B1. The two protocols ensure peers to get str=
eaming data=20
within certain time constraints. PPSP tracker protocol deals with the initi=
al=20
and periodical exchanges between tracker and peers: initially the peers con=
tact=20
the tracker to report their static information (like IP address, NAT types =
and=20
other useful things) and get a list of peers for a specific channel or stre=
aming=20
file from the tracker; periodically the tracker maintains lists of particip=
ating=20
peers according to the report from the peers about their status information=
.=20
PPSP peer protocol deals with the exchanges among peers. The peer exchanges=
 its=20
data availability and neighbor peer information with other peers. With thes=
e=20
information,</FONT><A=20
style=3D"mso-comment-reference: ZN=5F1; mso-comment-date: 20091223T1753"><F=
ONT=20
size=3D2> it can connect with these peers for further data=20
downloading.&nbsp;</FONT></A></SPAN><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kerning: 0pt=
"><o:p><FONT=20
size=3D2>&nbsp;</FONT></o:p></SPAN></P>
<P class=3DMsoNormal=20
style=3D"MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: left"=20
align=3Dleft><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kerning: 0pt=
"><FONT=20
size=3D2></FONT></SPAN>&nbsp;</P>
<P class=3DMsoNormal=20
style=3D"MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: left"=20
align=3Dleft><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kerning: 0pt=
"><FONT=20
size=3D2>This WG's primary tasks are to produce:<BR>1. A =A1=B0problem stat=
ement=A1=B1=20
document describing the problems, incentives, and scope of developing the P=
PSP=20
protocols, as well as common terminologies and=20
concepts.<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal=20
style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orpha=
n"=20
align=3Dleft><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kerning: 0pt=
"><o:p><FONT=20
size=3D2>&nbsp;</FONT></o:p></SPAN></P>
<P class=3DMsoNormal=20
style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orpha=
n"=20
align=3Dleft><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kerning: 0pt=
"><FONT=20
size=3D2>2. A =A1=B0requirements=A1=B1 document listing the requirements on=
 the designed=20
PPSP protocols (e.g., general functionality and performance requirements of=
 PPSP=20
protocols or basic types of information that PPSP protocols should communic=
ate=20
to facilitate P2P streaming).<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal=20
style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orpha=
n"=20
align=3Dleft><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kerning: 0pt=
"><BR><FONT=20
size=3D2>3. An "architectural survey" document explaining the current P2P=20
streaming architectures, in particular tracker-based P2P streaming, and key=
=20
issues in best practice.<o:p></o:p></FONT></SPAN></P><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kerning: 0pt=
">
<P class=3DMsoNormal=20
style=3D"MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: left"=20
align=3Dleft><BR><FONT size=3D2>4. A proposed standard defining the PPSP pe=
er=20
protocol. This protocol will define how PPSP peers advertise data availabil=
ity=20
and exchange neighbor peers. The protocol will also define the requests and=
=20
responses of data chunks among PPSP peers.</FONT></P>
<P class=3DMsoNormal=20
style=3D"MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: left"=20
align=3Dleft>&nbsp;</P>
<P class=3DMsoNormal=20
style=3D"MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: left"=20
align=3Dleft><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-font-kerning: 0pt=
">5. A=20
proposed standard defining the PPSP tracker protocol. This protocol will de=
fine=20
how PPSP peers inform and request information from PPSP trackers and how PP=
SP=20
trackers reply to the requests.</SPAN><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; mso-font-kerning: 0pt"><o:p></o:p></SPAN></P>
<P class=3DMsoNormal=20
style=3D"MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: left"=20
align=3Dleft></SPAN><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kerning: 0pt=
"><o:p><FONT=20
size=3D2>&nbsp;</FONT></o:p></SPAN></P>
<P class=3DMsoNormal=20
style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orpha=
n"=20
align=3Dleft><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kerning: 0pt=
"><FONT=20
size=3D2>6. A =A1=B0usage document=A1=B1 explaining how the protocols defin=
ed above, along=20
with existing IETF protocols, such as RELAOD, ALTO and RTSP, can inter-oper=
ate;=20
and how they may be integrated together to produce complete P2P streaming=20
systems.<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal=20
style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orpha=
n"=20
align=3Dleft><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kerning: 0pt=
"><o:p><FONT=20
size=3D2>&nbsp;</FONT></o:p></SPAN></P>
<P class=3DMsoNormal=20
style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orpha=
n"=20
align=3Dleft><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kerning: 0pt=
"><BR><FONT=20
size=3D2>The work planned for the PPSP WG is distinct from, but requires cl=
ose=20
participation with, work in other IETF WGs, particularly P2PSIP, ALTO,LEDBA=
T and=20
MMUSIC. The PPSP WG assumes that it cannot modify baseline P2PSIP, ALTO, LE=
DBAT=20
and MMUSIC behaviors. If PPSP determines that extensions to P2PSIP, ALTO,LE=
DBAT=20
and MMUSIC are needed, PPSP will seek to define such extensions and present=
 to=20
the respective working groups.</FONT></SPAN></P>
<P class=3DMsoNormal=20
style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orpha=
n"=20
align=3Dleft><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kerning: 0pt=
"><BR><FONT=20
size=3D2>The design of PPSP has to consider security issues. The protocol d=
ocument=20
will contain a complete description of the security issues that PPSP should=
=20
address.<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal=20
style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orpha=
n"=20
align=3Dleft><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kerning: 0pt=
"><o:p><FONT=20
size=3D2>&nbsp;</FONT></o:p></SPAN></P>
<P class=3DMsoNormal=20
style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orpha=
n"=20
align=3Dleft><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kerning: 0pt=
"><FONT=20
size=3D2>The following topics are excluded from this WG's scope:<BR>1. Tran=
sport=20
mechanisms for data transmission among PPSP peers, e.g. using TCP or UDP,=20
unicast or multicast, etc. </FONT><A=20
style=3D"mso-comment-reference: ZN=5F2; mso-comment-date: 20091223T1807"><F=
ONT=20
size=3D2>However the<SPAN style=3D"mso-spacerun: yes">&nbsp; </SPAN>design<=
SPAN=20
style=3D"mso-spacerun: yes">&nbsp; </SPAN>of<SPAN style=3D"mso-spacerun: ye=
s">&nbsp;=20
</SPAN>PPSP<SPAN style=3D"mso-spacerun: yes">&nbsp; </SPAN>will<SPAN=20
style=3D"mso-spacerun: yes">&nbsp; </SPAN>consider how it can be combined w=
ith the=20
transport mechanisms, including NAT traversal problem. The design of PPSP w=
ill=20
also consider the scenario of transmission<SPAN=20
style=3D"mso-spacerun: yes">&nbsp;</SPAN>of<SPAN=20
style=3D"mso-spacerun: yes">&nbsp;</SPAN>multiple streams<SPAN=20
style=3D"mso-spacerun: yes">&nbsp; </SPAN>(layered<SPAN=20
style=3D"mso-spacerun: yes">&nbsp; </SPAN>media).<SPAN=20
style=3D"mso-spacerun: yes">&nbsp; </SPAN>This includes considering various=
 media=20
descriptions (e.g. data chunk description in peer protocol) after investiga=
ting=20
different media coding mechanisms (e.g. SVC, MDC) to incorporate their feat=
ures=20
in the protocol.</FONT></A></SPAN></P>
<P class=3DMsoNormal=20
style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orpha=
n"=20
align=3Dleft><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kerning: 0pt=
"><BR><FONT=20
size=3D2>2. Network coding mechanisms in P2P streaming. Network coding may =
be used=20
in P2P streaming, but its support is beyond the scope of current=20
charter.<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal=20
style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orpha=
n"=20
align=3Dleft><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kerning: 0pt=
"><o:p><FONT=20
size=3D2>&nbsp;</FONT></o:p></SPAN></P>
<P class=3DMsoNormal=20
style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orpha=
n"=20
align=3Dleft><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kerning: 0pt=
"><FONT=20
size=3D2>3. Play-out mechanisms including streaming control (e.g., pause,=20
fast-forward, and rewind).<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal=20
style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orpha=
n"=20
align=3Dleft><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kerning: 0pt=
"><o:p><FONT=20
size=3D2>&nbsp;</FONT></o:p></SPAN></P>
<P class=3DMsoNormal=20
style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orpha=
n"=20
align=3Dleft><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kerning: 0pt=
"><FONT=20
size=3D2>4. Algorithms that may be different in different deployments (e.g.=
, chunk=20
selection, local storage strategies).<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal=20
style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orpha=
n"=20
align=3Dleft><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kerning: 0pt=
"><o:p><FONT=20
size=3D2>&nbsp;</FONT></o:p></SPAN></P>
<P class=3DMsoNormal=20
style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orpha=
n"=20
align=3Dleft><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kerning: 0pt=
"><FONT=20
size=3D2>5. Research type questions related to P2P streaming. This WG will =
instead=20
forward such questions to the IRTF P2PRG or other RG as appropriate. Exampl=
es=20
include cache management.<o:p></o:p></FONT></SPAN></P>
<P class=3DMsoNormal=20
style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-margin-top-alt: auto; m=
so-margin-bottom-alt: auto; mso-pagination: widow-orphan; mso-outline-level=
: 2"=20
align=3Dleft><B><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 18pt; FONT-FAMILY: 'Courier New'; mso-font-kerning: 0pt=
"><FONT=20
size=3D2>Goals and Milestones:<o:p></o:p></FONT></SPAN></B></P>
<P class=3DMsoNormal style=3D"TEXT-ALIGN: left" align=3Dleft>
<TABLE class=3DMsoNormalTable style=3D"WIDTH: 15cm; mso-cellspacing: 1.5pt"=
=20
cellPadding=3D0 width=3D567 border=3D0>
  <TBODY>
  <TR style=3D"mso-yfti-irow: 0; mso-yfti-firstrow: yes">
    <TD=20
    style=3D"BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 0.75pt; BORDER-TOP: #ece=
9d8; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #ece9d8; WI=
DTH: 52.5pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR:=
 transparent"=20
    vAlign=3Dtop width=3D70>
      <P class=3DMsoNormal=20
      style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow=
-orphan"=20
      align=3Dleft><SPAN lang=3DEN-US=20
      style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kernin=
g: 0pt"><FONT=20
      size=3D2>Apr 2010<o:p></o:p></FONT></SPAN></P></TD>
    <TD=20
    style=3D"BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 0.75pt; BORDER-TOP: #ece=
9d8; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #ece9d8; WI=
DTH: 368.25pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLO=
R: transparent"=20
    vAlign=3Dtop width=3D491>
      <P class=3DMsoNormal=20
      style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow=
-orphan"=20
      align=3Dleft><SPAN lang=3DEN-US=20
      style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kernin=
g: 0pt"><FONT=20
      size=3D2>Working Group Last Call for problem=20
      statement<o:p></o:p></FONT></SPAN></P></TD></TR>
  <TR style=3D"mso-yfti-irow: 1">
    <TD=20
    style=3D"BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 0.75pt; BORDER-TOP: #ece=
9d8; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #ece9d8; WI=
DTH: 52.5pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR:=
 transparent"=20
    vAlign=3Dtop width=3D70>
      <P class=3DMsoNormal=20
      style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow=
-orphan"=20
      align=3Dleft><SPAN lang=3DEN-US=20
      style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kernin=
g: 0pt"><FONT=20
      size=3D2>Jun 2010<o:p></o:p></FONT></SPAN></P></TD>
    <TD=20
    style=3D"BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 0.75pt; BORDER-TOP: #ece=
9d8; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #ece9d8; WI=
DTH: 368.25pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLO=
R: transparent"=20
    vAlign=3Dtop width=3D491>
      <P class=3DMsoNormal=20
      style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow=
-orphan"=20
      align=3Dleft><SPAN lang=3DEN-US=20
      style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kernin=
g: 0pt"><FONT=20
      size=3D2>Submit problem statement to IESG as Informational=20
      document<o:p></o:p></FONT></SPAN></P></TD></TR>
  <TR style=3D"mso-yfti-irow: 2">
    <TD=20
    style=3D"BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 0.75pt; BORDER-TOP: #ece=
9d8; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #ece9d8; WI=
DTH: 52.5pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR:=
 transparent"=20
    vAlign=3Dtop width=3D70>
      <P class=3DMsoNormal=20
      style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow=
-orphan"=20
      align=3Dleft><SPAN lang=3DEN-US=20
      style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kernin=
g: 0pt"><FONT=20
      size=3D2>Aug 2010<o:p></o:p></FONT></SPAN></P></TD>
    <TD=20
    style=3D"BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 0.75pt; BORDER-TOP: #ece=
9d8; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #ece9d8; WI=
DTH: 368.25pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLO=
R: transparent"=20
    vAlign=3Dtop width=3D491>
      <P class=3DMsoNormal=20
      style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow=
-orphan"=20
      align=3Dleft><SPAN lang=3DEN-US=20
      style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kernin=
g: 0pt"><FONT=20
      size=3D2>Working Group Last Call for architecture=20
      survey<o:p></o:p></FONT></SPAN></P></TD></TR>
  <TR style=3D"mso-yfti-irow: 3">
    <TD=20
    style=3D"BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 0.75pt; BORDER-TOP: #ece=
9d8; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #ece9d8; WI=
DTH: 52.5pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR:=
 transparent"=20
    vAlign=3Dtop width=3D70>
      <P class=3DMsoNormal=20
      style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow=
-orphan"=20
      align=3Dleft><SPAN lang=3DEN-US=20
      style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kernin=
g: 0pt"><FONT=20
      size=3D2>Aug 2010<o:p></o:p></FONT></SPAN></P></TD>
    <TD=20
    style=3D"BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 0.75pt; BORDER-TOP: #ece=
9d8; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #ece9d8; WI=
DTH: 368.25pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLO=
R: transparent"=20
    vAlign=3Dtop width=3D491>
      <P class=3DMsoNormal=20
      style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow=
-orphan"=20
      align=3Dleft><SPAN lang=3DEN-US=20
      style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kernin=
g: 0pt"><FONT=20
      size=3D2>Working Group Last Call for=20
      requirements<o:p></o:p></FONT></SPAN></P></TD></TR>
  <TR style=3D"mso-yfti-irow: 4">
    <TD=20
    style=3D"BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 0.75pt; BORDER-TOP: #ece=
9d8; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #ece9d8; WI=
DTH: 52.5pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR:=
 transparent"=20
    vAlign=3Dtop width=3D70>
      <P class=3DMsoNormal=20
      style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow=
-orphan"=20
      align=3Dleft><SPAN lang=3DEN-US=20
      style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kernin=
g: 0pt"><FONT=20
      size=3D2>Oct<o:p></o:p></FONT></SPAN></P>
      <P class=3DMsoNormal=20
      style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow=
-orphan"=20
      align=3Dleft><SPAN lang=3DEN-US=20
      style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kernin=
g: 0pt"><FONT=20
      size=3D2>2010<o:p></o:p></FONT></SPAN></P></TD>
    <TD=20
    style=3D"BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 0.75pt; BORDER-TOP: #ece=
9d8; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #ece9d8; WI=
DTH: 368.25pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLO=
R: transparent"=20
    vAlign=3Dtop width=3D491>
      <P class=3DMsoNormal=20
      style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow=
-orphan"=20
      align=3Dleft><SPAN lang=3DEN-US=20
      style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kernin=
g: 0pt"><FONT=20
      size=3D2>Submit architecture survey to IESG as Informational=20
      document<o:p></o:p></FONT></SPAN></P></TD></TR>
  <TR style=3D"mso-yfti-irow: 5">
    <TD=20
    style=3D"BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 0.75pt; BORDER-TOP: #ece=
9d8; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #ece9d8; WI=
DTH: 52.5pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR:=
 transparent"=20
    vAlign=3Dtop width=3D70>
      <P class=3DMsoNormal=20
      style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow=
-orphan"=20
      align=3Dleft><SPAN lang=3DEN-US=20
      style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kernin=
g: 0pt"><FONT=20
      size=3D2>Oct 2010<o:p></o:p></FONT></SPAN></P></TD>
    <TD=20
    style=3D"BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 0.75pt; BORDER-TOP: #ece=
9d8; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #ece9d8; WI=
DTH: 368.25pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLO=
R: transparent"=20
    vAlign=3Dtop width=3D491>
      <P class=3DMsoNormal=20
      style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow=
-orphan"=20
      align=3Dleft><SPAN lang=3DEN-US=20
      style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kernin=
g: 0pt"><FONT=20
      size=3D2>Submit requirements to IESG as Informational=20
      document<o:p></o:p></FONT></SPAN></P></TD></TR>
  <TR style=3D"mso-yfti-irow: 6">
    <TD=20
    style=3D"BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 0.75pt; BORDER-TOP: #ece=
9d8; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #ece9d8; WI=
DTH: 52.5pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR:=
 transparent"=20
    vAlign=3Dtop width=3D70>
      <P class=3DMsoNormal=20
      style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow=
-orphan"=20
      align=3Dleft><SPAN lang=3DEN-US=20
      style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kernin=
g: 0pt"><FONT=20
      size=3D2>Apr 2011<o:p></o:p></FONT></SPAN></P></TD>
    <TD=20
    style=3D"BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 0.75pt; BORDER-TOP: #ece=
9d8; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #ece9d8; WI=
DTH: 368.25pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLO=
R: transparent"=20
    vAlign=3Dtop width=3D491>
      <P class=3DMsoNormal=20
      style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow=
-orphan"=20
      align=3Dleft><SPAN lang=3DEN-US=20
      style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kernin=
g: 0pt"><FONT=20
      size=3D2>Working Group Last Call for PPSP peer=20
      protocol<o:p></o:p></FONT></SPAN></P></TD></TR>
  <TR style=3D"mso-yfti-irow: 7">
    <TD=20
    style=3D"BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 0.75pt; BORDER-TOP: #ece=
9d8; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #ece9d8; WI=
DTH: 52.5pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR:=
 transparent"=20
    vAlign=3Dtop width=3D70>
      <P class=3DMsoNormal=20
      style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow=
-orphan"=20
      align=3Dleft><SPAN lang=3DEN-US=20
      style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kernin=
g: 0pt"><FONT=20
      size=3D2>Apr<o:p></o:p></FONT></SPAN></P>
      <P class=3DMsoNormal=20
      style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow=
-orphan"=20
      align=3Dleft><SPAN lang=3DEN-US=20
      style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kernin=
g: 0pt"><FONT=20
      size=3D2>2011<o:p></o:p></FONT></SPAN></P></TD>
    <TD=20
    style=3D"BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 0.75pt; BORDER-TOP: #ece=
9d8; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #ece9d8; WI=
DTH: 368.25pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLO=
R: transparent"=20
    vAlign=3Dtop width=3D491>
      <P class=3DMsoNormal=20
      style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow=
-orphan"=20
      align=3Dleft><SPAN lang=3DEN-US=20
      style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kernin=
g: 0pt"><FONT=20
      size=3D2>Working Group Last Call for PPSP tracker=20
      protocol<o:p></o:p></FONT></SPAN></P></TD></TR>
  <TR style=3D"mso-yfti-irow: 8">
    <TD=20
    style=3D"BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 0.75pt; BORDER-TOP: #ece=
9d8; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #ece9d8; WI=
DTH: 52.5pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR:=
 transparent"=20
    vAlign=3Dtop width=3D70>
      <P class=3DMsoNormal=20
      style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow=
-orphan"=20
      align=3Dleft><SPAN lang=3DEN-US=20
      style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kernin=
g: 0pt"><FONT=20
      size=3D2>Aug 2011<o:p></o:p></FONT></SPAN></P></TD>
    <TD=20
    style=3D"BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 0.75pt; BORDER-TOP: #ece=
9d8; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #ece9d8; WI=
DTH: 368.25pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLO=
R: transparent"=20
    vAlign=3Dtop width=3D491>
      <P class=3DMsoNormal=20
      style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow=
-orphan"=20
      align=3Dleft><SPAN lang=3DEN-US=20
      style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kernin=
g: 0pt"><FONT=20
      size=3D2>Submit PPSP peer protocol to IESG as Proposed=20
      Standard<o:p></o:p></FONT></SPAN></P></TD></TR>
  <TR style=3D"mso-yfti-irow: 9">
    <TD=20
    style=3D"BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 0.75pt; BORDER-TOP: #ece=
9d8; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #ece9d8; WI=
DTH: 52.5pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR:=
 transparent"=20
    vAlign=3Dtop width=3D70>
      <P class=3DMsoNormal=20
      style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow=
-orphan"=20
      align=3Dleft><SPAN lang=3DEN-US=20
      style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kernin=
g: 0pt"><FONT=20
      size=3D2>Aug 2011<o:p></o:p></FONT></SPAN></P></TD>
    <TD=20
    style=3D"BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 0.75pt; BORDER-TOP: #ece=
9d8; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #ece9d8; WI=
DTH: 368.25pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLO=
R: transparent"=20
    vAlign=3Dtop width=3D491>
      <P class=3DMsoNormal=20
      style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow=
-orphan"=20
      align=3Dleft><SPAN lang=3DEN-US=20
      style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kernin=
g: 0pt"><FONT=20
      size=3D2>Submit PPSP tracker protocol to IESG as Proposed=20
      Standard<o:p></o:p></FONT></SPAN></P></TD></TR>
  <TR style=3D"mso-yfti-irow: 10">
    <TD=20
    style=3D"BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 0.75pt; BORDER-TOP: #ece=
9d8; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #ece9d8; WI=
DTH: 52.5pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR:=
 transparent"=20
    vAlign=3Dtop width=3D70>
      <P class=3DMsoNormal=20
      style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow=
-orphan"=20
      align=3Dleft><SPAN lang=3DEN-US=20
      style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kernin=
g: 0pt"><FONT=20
      size=3D2>Nov 2011<o:p></o:p></FONT></SPAN></P></TD>
    <TD=20
    style=3D"BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 0.75pt; BORDER-TOP: #ece=
9d8; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #ece9d8; WI=
DTH: 368.25pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLO=
R: transparent"=20
    vAlign=3Dtop width=3D491>
      <P class=3DMsoNormal=20
      style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow=
-orphan"=20
      align=3Dleft><SPAN lang=3DEN-US=20
      style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kernin=
g: 0pt"><FONT=20
      size=3D2>Working Group Last Call of usage=20
      document<o:p></o:p></FONT></SPAN></P></TD></TR>
  <TR style=3D"mso-yfti-irow: 11">
    <TD=20
    style=3D"BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 0.75pt; BORDER-TOP: #ece=
9d8; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #ece9d8; WI=
DTH: 52.5pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR:=
 transparent"=20
    vAlign=3Dtop width=3D70>
      <P class=3DMsoNormal=20
      style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow=
-orphan"=20
      align=3Dleft><SPAN lang=3DEN-US=20
      style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kernin=
g: 0pt"><FONT=20
      size=3D2>Nov 2011<o:p></o:p></FONT></SPAN></P></TD>
    <TD=20
    style=3D"BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 0.75pt; BORDER-TOP: #ece=
9d8; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #ece9d8; WI=
DTH: 368.25pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLO=
R: transparent"=20
    vAlign=3Dtop width=3D491>
      <P class=3DMsoNormal=20
      style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow=
-orphan"=20
      align=3Dleft><SPAN lang=3DEN-US=20
      style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kernin=
g: 0pt"><FONT=20
      size=3D2>Working Group Last Call of mobility BCP=20
      document<o:p></o:p></FONT></SPAN></P></TD></TR>
  <TR style=3D"mso-yfti-irow: 12">
    <TD=20
    style=3D"BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 0.75pt; BORDER-TOP: #ece=
9d8; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #ece9d8; WI=
DTH: 52.5pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR:=
 transparent"=20
    vAlign=3Dtop width=3D70>
      <P class=3DMsoNormal=20
      style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow=
-orphan"=20
      align=3Dleft><SPAN lang=3DEN-US=20
      style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kernin=
g: 0pt"><FONT=20
      size=3D2>Jan 2012<o:p></o:p></FONT></SPAN></P></TD>
    <TD=20
    style=3D"BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 0.75pt; BORDER-TOP: #ece=
9d8; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #ece9d8; WI=
DTH: 368.25pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLO=
R: transparent"=20
    vAlign=3Dtop width=3D491>
      <P class=3DMsoNormal=20
      style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow=
-orphan"=20
      align=3Dleft><SPAN lang=3DEN-US=20
      style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kernin=
g: 0pt"><FONT=20
      size=3D2>Submit usage document to IESG as Informational=20
      document<o:p></o:p></FONT></SPAN></P></TD></TR>
  <TR style=3D"mso-yfti-irow: 13">
    <TD=20
    style=3D"BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 0.75pt; BORDER-TOP: #ece=
9d8; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #ece9d8; WI=
DTH: 52.5pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR:=
 transparent"=20
    vAlign=3Dtop width=3D70>
      <P class=3DMsoNormal=20
      style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow=
-orphan"=20
      align=3Dleft><SPAN lang=3DEN-US=20
      style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kernin=
g: 0pt"><FONT=20
      size=3D2>Jan 2012<o:p></o:p></FONT></SPAN></P></TD>
    <TD=20
    style=3D"BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 0.75pt; BORDER-TOP: #ece=
9d8; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #ece9d8; WI=
DTH: 368.25pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLO=
R: transparent"=20
    vAlign=3Dtop width=3D491>
      <P class=3DMsoNormal=20
      style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow=
-orphan"=20
      align=3Dleft><SPAN lang=3DEN-US=20
      style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kernin=
g: 0pt"><FONT=20
      size=3D2>Submit mobility BCP document to IESG as Informational=20
      document<o:p></o:p></FONT></SPAN></P></TD></TR>
  <TR style=3D"mso-yfti-irow: 14; mso-yfti-lastrow: yes">
    <TD=20
    style=3D"BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 0.75pt; BORDER-TOP: #ece=
9d8; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #ece9d8; WI=
DTH: 52.5pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR:=
 transparent"=20
    vAlign=3Dtop width=3D70>
      <P class=3DMsoNormal=20
      style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow=
-orphan"=20
      align=3Dleft><SPAN lang=3DEN-US=20
      style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kernin=
g: 0pt"><FONT=20
      size=3D2>Apr 2012<o:p></o:p></FONT></SPAN></P></TD>
    <TD=20
    style=3D"BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 0.75pt; BORDER-TOP: #ece=
9d8; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: #ece9d8; WI=
DTH: 368.25pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLO=
R: transparent"=20
    vAlign=3Dtop width=3D491>
      <P class=3DMsoNormal=20
      style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow=
-orphan"=20
      align=3Dleft><SPAN lang=3DEN-US=20
      style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Courier New'; mso-font-kernin=
g: 0pt"><FONT=20
      size=3D2>Dissolve or re-charter=20
<o:p></o:p></FONT></SPAN></P></TD></TR></TBODY></TABLE></P>
<P class=3DMsoNormal=20
style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orpha=
n"=20
align=3Dleft><SPAN lang=3DEN-US><FONT face=3D"Times New Roman"=20
size=3D3></FONT></SPAN>&nbsp;</P></SPAN></FONT></DIV>
<DIV>
<P class=3DMsoNormal style=3D"TEXT-ALIGN: left" align=3Dleft><FONT face=3DV=
erdana=20
size=3D2><SPAN lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Verdana">&nbsp;<o:p></o:p></SPAN></F=
ONT></P></DIV>
<DIV></FONT><FONT size=3D2>
<HR style=3D"WIDTH: 122px; HEIGHT: 2px" SIZE=3D2>
</FONT></DIV></DIV></DIV>
<DIV><FONT color=3D#c0c0c0><FONT size=3D2>zhangyunfei</FONT></DIV>
<DIV><FONT size=3D2>2009-12-26</FONT></FONT></DIV></FONT></BODY></HTML>

--=====003_Dragon240626250318_=====--


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--=====003_Dragon573800036373_=====--


From zhangyunfei@chinamobile.com  Sun Dec 27 18:14:17 2009
Return-Path: <zhangyunfei@chinamobile.com>
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Date: Mon, 28 Dec 2009 10:13:54 +0800
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To: "li.lichun1@zte.com.cn" <li.lichun1@zte.com.cn>
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Cc: "ppsp@ietf.org" <ppsp@ietf.org>
Subject: Re: [ppsp] ppsp revised charter proposal
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Date: Mon, 28 Dec 2009 10:20:54 +0800
From: Ning Zong <zongning@huawei.com>
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To: 'zhangyunfei' <zhangyunfei@chinamobile.com>, meng.yu@zte.com.cn
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Agree with Yunfei.

Interaction between Trackers would be optional at this stage.

=20

BR,

Ning Zong

=20

  _____ =20

From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of
zhangyunfei
Sent: Monday, December 28, 2009 10:12 AM
To: meng.yu@zte.com.cn
Cc: ppsp@ietf.org
Subject: Re: [ppsp] =B4=F0=B8=B4: ppsp revised charter proposal

=20

Hi Yu,

   Thanks for the quick reply.I agree with you that peers and resource
information exchange among trackers can broaden the audience scope.But I
think this can be placed in a second priority currently.

   As mentioned in the problem statement draft, PPSP is the necessary
component of a p2p streaming system, but not the whole part of a p2p
streaming system.With highest priorty, PPSP need to solve the problem of
defining the basic message interaction between trackers and peers, as =
well
as among peers. Also this is a direct reaction for the suggestions in =
the
BOF and in the mailing list to narrow down the scope.

   I think we may turn to consider the point you mentioned once we =
finish
the basic protocol.Thanks again for the suggestion.

=20

BR

Yunfei

=20

  _____ =20

zhangyunfei

2009-12-28

  _____ =20

=B7=A2=BC=FE=C8=CB=A3=BA meng.yu@zte.com.cn

=B7=A2=CB=CD=CA=B1=BC=E4=A3=BA 2009-12-28 08:54:17

=CA=D5=BC=FE=C8=CB=A3=BA zhangyunfei

=B3=AD=CB=CD=A3=BA ppsp@ietf.org; ppsp-bounces@ietf.org

=D6=F7=CC=E2=A3=BA =B4=F0=B8=B4: [ppsp] ppsp revised charter proposal

=20


Hi,=20

Should the interface protocol between trackers be nessary and covered in
PPSP?=20

To my understanding, peers and resource information can be exchanged =
through
this interface so that streaming could be shared in a much wider extent. =


B.R.=20

Merry Christmas!=20


Yu Meng=20






"zhangyunfei" <zhangyunfei@chinamobile.com>=20
=B7=A2=BC=FE=C8=CB:  ppsp-bounces@ietf.org=20

2009-12-26 16:52=20


=CA=D5=BC=FE=C8=CB

"ppsp@ietf.org" <ppsp@ietf.org>=20


=B3=AD=CB=CD

=20


=D6=F7=CC=E2

[ppsp] ppsp revised charter proposal

=20


=20

=20




 Dear all,=20

   The latest version of PPSP charter is attached.Welcome to comment on
this.I guess many of you guys are enjoying the Christmas holiday.Merry =
X'mas
and happy new year!Wish to hear your valuable suggestions in the =
beginning
of 2010.:)=20

   Hope PPSP can have a great development in the new year with all of =
your
participation and contribution.=20

The main modifications are:=20

1)Para 2:=20

a)wish to make it better understood about what the tracker protocol and =
the
peer protocol differ in and reply the BOF comments that the two =
protocols
may be a single one;=20

b)Add the NAT issue raised in the BOF;=20

2)Para3:=20

a) Para3-bullet 4,adding the gossip communication in peer protocol as
discussed in the mailing list;=20

b)Para3-bullet7, deleted as suggested by Lars that optional part can be
detered until we think it clearer;=20

3)Para4, adding LEDBAT as reference raised in the BOF.=20

4)Para5,deleting privay raised in the BOF.=20

5)Para6:=20

a)bullet1:Adding the description of considering the NAT traversal and =
the
multiple stream senario as discussed in the BOF and mailing list.=20

BR=20

Yunfei=20

*************************************************************************=
=20
Description of PPSP Working Group:=20
The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is
chartered to develop standard signaling protocols (called PPSP =
protocols)
for multiple types of entities (e.g. intelligent endpoints, caches, =
content
distribution network nodes, and/or other edge devices) to participate in =
P2P
streaming systems in both fixed and mobile Internet.=20

There are two kinds of components in PPSP protocols, i.e., =
=A1=B0trackers=A1=B1 and
=A1=B0peers=A1=B1. PPSP protocols include the PPSP tracker protocol =A8C =
a signaling
protocol between =A1=B0trackers=A1=B1 and =A1=B0peers=A1=B1, and the =
PPSP peer protocol =A8C a
signaling protocol among =A1=B0peers=A1=B1. The two protocols ensure =
peers to get
streaming data within certain time constraints. PPSP tracker protocol =
deals
with the initial and periodical exchanges between tracker and peers:
initially the peers contact the tracker to report their static =
information
(like IP address, NAT types and other useful things) and get a list of =
peers
for a specific channel or streaming file from the tracker; periodically =
the
tracker maintains lists of participating peers according to the report =
from
the peers about their status information. PPSP peer protocol deals with =
the
exchanges among peers. The peer exchanges its data availability and =
neighbor
peer information with other peers. With these information, it can =
connect
with these peers for further data downloading.  =20
 =20
This WG's primary tasks are to produce:
1. A =A1=B0problem statement=A1=B1 document describing the problems, =
incentives, and
scope of developing the PPSP protocols, as well as common terminologies =
and
concepts.=20
 =20
2. A =A1=B0requirements=A1=B1 document listing the requirements on the =
designed PPSP
protocols (e.g., general functionality and performance requirements of =
PPSP
protocols or basic types of information that PPSP protocols should
communicate to facilitate P2P streaming).=20

3. An "architectural survey" document explaining the current P2P =
streaming
architectures, in particular tracker-based P2P streaming, and key issues =
in
best practice.=20

4. A proposed standard defining the PPSP peer protocol. This protocol =
will
define how PPSP peers advertise data availability and exchange neighbor
peers. The protocol will also define the requests and responses of data
chunks among PPSP peers.=20
 =20
5. A proposed standard defining the PPSP tracker protocol. This protocol
will define how PPSP peers inform and request information from PPSP =
trackers
and how PPSP trackers reply to the requests.=20
 =20
6. A =A1=B0usage document=A1=B1 explaining how the protocols defined =
above, along
with existing IETF protocols, such as RELAOD, ALTO and RTSP, can
inter-operate; and how they may be integrated together to produce =
complete
P2P streaming systems.=20
 =20

The work planned for the PPSP WG is distinct from, but requires close
participation with, work in other IETF WGs, particularly P2PSIP, =
ALTO,LEDBAT
and MMUSIC. The PPSP WG assumes that it cannot modify baseline P2PSIP, =
ALTO,
LEDBAT and MMUSIC behaviors. If PPSP determines that extensions to =
P2PSIP,
ALTO,LEDBAT and MMUSIC are needed, PPSP will seek to define such =
extensions
and present to the respective working groups.=20

The design of PPSP has to consider security issues. The protocol =
document
will contain a complete description of the security issues that PPSP =
should
address.=20
 =20
The following topics are excluded from this WG's scope:
1. Transport mechanisms for data transmission among PPSP peers, e.g. =
using
TCP or UDP, unicast or multicast, etc. However the  design  of  PPSP  =
will
consider how it can be combined with the transport mechanisms, including =
NAT
traversal problem. The design of PPSP will also consider the scenario of
transmission of multiple streams  (layered  media).  This includes
considering various media descriptions (e.g. data chunk description in =
peer
protocol) after investigating different media coding mechanisms (e.g. =
SVC,
MDC) to incorporate their features in the protocol.=20

2. Network coding mechanisms in P2P streaming. Network coding may be =
used in
P2P streaming, but its support is beyond the scope of current charter.=20
 =20
3. Play-out mechanisms including streaming control (e.g., pause,
fast-forward, and rewind).=20
 =20
4. Algorithms that may be different in different deployments (e.g., =
chunk
selection, local storage strategies).=20
 =20
5. Research type questions related to P2P streaming. This WG will =
instead
forward such questions to the IRTF P2PRG or other RG as appropriate.
Examples include cache management.=20
Goals and Milestones:=20


Apr 2010=20

Working Group Last Call for problem statement=20


Jun 2010=20

Submit problem statement to IESG as Informational document=20


Aug 2010=20

Working Group Last Call for architecture survey=20


Aug 2010=20

Working Group Last Call for requirements=20


Oct=20
2010=20

Submit architecture survey to IESG as Informational document=20


Oct 2010=20

Submit requirements to IESG as Informational document=20


Apr 2011=20

Working Group Last Call for PPSP peer protocol=20


Apr=20
2011=20

Working Group Last Call for PPSP tracker protocol=20


Aug 2011=20

Submit PPSP peer protocol to IESG as Proposed Standard=20


Aug 2011=20

Submit PPSP tracker protocol to IESG as Proposed Standard=20


Nov 2011=20

Working Group Last Call of usage document=20


Nov 2011=20

Working Group Last Call of mobility BCP document=20


Jan 2012=20

Submit usage document to IESG as Informational document=20


Jan 2012=20

Submit mobility BCP document to IESG as Informational document=20


Apr 2012=20

Dissolve or re-charter=20


 =20

  _____ =20


zhangyunfei=20
2009-12-26_______________________________________________
ppsp mailing list
ppsp@ietf.org
https://www.ietf.org/mailman/listinfo/ppsp


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<body lang=3DZH-CN link=3Dblue vlink=3Dpurple>

<div class=3DSection1>

<p class=3DMsoNormal><font size=3D1 color=3Dnavy face=3DArial><span =
lang=3DEN-US
style=3D'font-size:9.0pt;font-family:Arial;color:navy'>Agree with =
Yunfei.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D1 color=3Dnavy face=3DArial><span =
lang=3DEN-US
style=3D'font-size:9.0pt;font-family:Arial;color:navy'>Interaction =
between
Trackers would be optional at this stage.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D1 color=3Dnavy face=3DArial><span =
lang=3DEN-US
style=3D'font-size:9.0pt;font-family:Arial;color:navy'><o:p>&nbsp;</o:p><=
/span></font></p>

<p class=3DMsoNormal><font size=3D1 color=3Dnavy face=3DArial><span =
lang=3DEN-US
style=3D'font-size:9.0pt;font-family:Arial;color:navy'>BR,<o:p></o:p></sp=
an></font></p>

<p class=3DMsoNormal><font size=3D1 color=3Dnavy face=3DArial><span =
lang=3DEN-US
style=3D'font-size:9.0pt;font-family:Arial;color:navy'>Ning =
Zong<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D1 color=3Dnavy face=3DArial><span =
lang=3DEN-US
style=3D'font-size:9.0pt;font-family:Arial;color:navy'><o:p>&nbsp;</o:p><=
/span></font></p>

<div class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><font =
size=3D3
face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'>

<hr size=3D2 width=3D"100%" align=3Dcenter tabindex=3D-1>

</span></font></div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><b><font =
size=3D2
face=3DTahoma><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Tahoma;
font-weight:bold'>From:</span></font></b><font size=3D2 =
face=3DTahoma><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:Tahoma'> =
ppsp-bounces@ietf.org
[mailto:ppsp-bounces@ietf.org] <b><span style=3D'font-weight:bold'>On =
Behalf Of </span></b>zhangyunfei<br>
<b><span style=3D'font-weight:bold'>Sent:</span></b> Monday, December =
28, 2009
10:12 AM<br>
<b><span style=3D'font-weight:bold'>To:</span></b> =
meng.yu@zte.com.cn<br>
<b><span style=3D'font-weight:bold'>Cc:</span></b> ppsp@ietf.org<br>
<b><span style=3D'font-weight:bold'>Subject:</span></b> Re: [ppsp] =
</span></font><font
size=3D2 face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5'>=B4=F0=B8=B4</span></=
font><font
size=3D2 face=3DTahoma><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Tahoma'>:
ppsp revised charter proposal</span></font><font size=3D3 =
face=3D=CB=CE=CC=E5><span
lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
face=3D"Times New Roman"><span lang=3DEN-US =
style=3D'font-size:10.5pt'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
face=3D"Times New Roman"><span lang=3DEN-US =
style=3D'font-size:10.5pt'><!--[if gte vml 1]><v:shapetype=20
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7597l10860,21600,20995,7597v485,-1037,605,-2187,485,-3377c21115,3222,2042=
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</v:shapetype><v:shape id=3D"DtsShapeName" o:spid=3D"_x0000_s2078" =
type=3D"#_x0000_t74"=20
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{72207!!!1@@51B401107DBC6C7D6Onsl`m/enu!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1!1"=20
 =
style=3D'position:absolute;margin-left:0;margin-top:0;width:.05pt;height:=
.05pt;
 z-index:1;visibility:hidden'>
 <w:anchorlock/>
</v:shape><![endif]--></span></font><font size=3D2 color=3Dblue =
face=3DVerdana><span
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana;color:blue'>Hi =
Yu,</span></font><font
size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2 color=3Dblue
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana;
color:blue'>&nbsp;&nbsp; Thanks for the quick reply.I agree with you =
that peers
and resource information exchange among trackers can broaden the =
audience
scope.But I think this can be placed in a second priority =
currently.</span></font><font
size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2 color=3Dblue
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana;
color:blue'>&nbsp;&nbsp; As mentioned in the problem statement draft, =
PPSP is
the necessary component of a p2p streaming system, but not the whole =
part of a
p2p streaming system.With highest priorty, PPSP need to solve the =
problem of
defining the basic message interaction between trackers and peers, as =
well as
among peers. Also this is a direct reaction for the suggestions in the =
BOF and
in the mailing list to narrow down the&nbsp;scope.</span></font><font =
size=3D3
face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2 color=3Dblue
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana;
color:blue'>&nbsp;&nbsp; I think we may turn to consider the point you
mentioned once we finish the basic protocol.Thanks again for the =
suggestion.</span></font><font
size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D3 face=3D=CB=CE=CC=E5><span
lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'>&nbsp;<o:p></o:p></sp=
an></font></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2 color=3Dblue
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana;
color:blue'>BR</span></font><font size=3D3 face=3D=CB=CE=CC=E5><span =
lang=3DEN-US
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2 color=3Dblue
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana;
color:blue'>Yunfei</span></font><font size=3D3 face=3D=CB=CE=CC=E5><span =
lang=3DEN-US
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D3 face=3D=CB=CE=CC=E5><span
lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'>&nbsp;<o:p></o:p></sp=
an></font></p>

</div>

<div class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><font =
size=3D2
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>

<hr size=3D2 width=3D122 style=3D'width:91.5pt' align=3Dcenter>

</span></font></div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
color=3Dsilver face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:
Verdana;color:silver'>zhangyunfei</span></font><font size=3D3 =
color=3Dsilver
face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5;color:silver'><o:p></o=
:p></span></font></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><st1:chsdate
IsROCDate=3D"False" IsLunarDate=3D"False" Day=3D"28" Month=3D"12" =
Year=3D"2009" w:st=3D"on"><font
 size=3D2 color=3Dsilver face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;
 =
font-family:Verdana;color:silver'>2009-12-28</span></font></st1:chsdate><=
font
size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>

</div>

<div>

<div class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><font =
size=3D2
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>

<hr size=3D2 width=3D"100%" align=3Dcenter>

</span></font></div>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left'><strong><b><font size=3D2
face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5'>=B7=A2=BC=FE=C8=CB=A3=
=BA</span></font></b></strong><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
meng.yu@zte.com.cn</span></font><font size=3D3 face=3D=CB=CE=CC=E5><span =
lang=3DEN-US
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left'><strong><b><font size=3D2
face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5'>=B7=A2=CB=CD=CA=B1=BC=
=E4=A3=BA</span></font></b></strong><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
<st1:chsdate IsROCDate=3D"False" IsLunarDate=3D"False" Day=3D"28" =
Month=3D"12"
Year=3D"2009" =
w:st=3D"on">2009-12-28</st1:chsdate>&nbsp;08:54:17</span></font><font
size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left'><strong><b><font size=3D2
face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5'>=CA=D5=BC=FE=C8=CB=A3=
=BA</span></font></b></strong><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
zhangyunfei</span></font><font size=3D3 face=3D=CB=CE=CC=E5><span =
lang=3DEN-US
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left'><strong><b><font size=3D2
face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5'>=B3=AD=CB=CD=A3=BA</s=
pan></font></b></strong><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
ppsp@ietf.org; ppsp-bounces@ietf.org</span></font><font size=3D3 =
face=3D=CB=CE=CC=E5><span
lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left'><strong><b><font size=3D2
face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5'>=D6=F7=CC=E2=A3=BA</s=
pan></font></b></strong><font
size=3D2 face=3DVerdana><span =
style=3D'font-size:10.0pt;font-family:Verdana'> </span></font><font
size=3D2 face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5'>=B4=F0=B8=B4</span></=
font><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>:
[ppsp] ppsp revised charter proposal</span></font><font size=3D3 =
face=3D=CB=CE=CC=E5><span
lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D3 face=3D=CB=CE=CC=E5><span
lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'>&nbsp;<o:p></o:p></sp=
an></font></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'margin-bottom:12.0pt;text-align:left'><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'><br>
</span></font><font size=3D2 face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:
10.0pt;font-family:sans-serif'>Hi,</span></font><font size=3D2 =
face=3DVerdana><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:Verdana'> <br>
<br>
</span></font><font size=3D2 face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:
10.0pt;font-family:sans-serif'>Should the interface protocol between =
trackers
be nessary and covered in PPSP?</span></font><font size=3D2 =
face=3DVerdana><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:Verdana'> <br>
<br>
</span></font><font size=3D2 face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:
10.0pt;font-family:sans-serif'>To my understanding, peers and resource
information can be exchanged through this interface so that streaming =
could be
shared in a much wider extent.</span></font><font size=3D2 =
face=3DVerdana><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:Verdana'> <br>
<br>
</span></font><font size=3D2 face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:
10.0pt;font-family:sans-serif'>B.R.</span></font><font size=3D2 =
face=3DVerdana><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:Verdana'> <br>
<br>
</span></font><font size=3D2 face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:
10.0pt;font-family:sans-serif'>Merry Christmas!</span></font><font =
size=3D2
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'> <br>
<br>
<br>
</span></font><font size=3D2 face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:
10.0pt;font-family:sans-serif'>Yu Meng</span></font><font size=3D2 =
face=3DVerdana><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:Verdana'> <br>
<br>
<br>
<br>
<o:p></o:p></span></font></p>

<table class=3DMsoNormalTable border=3D0 cellpadding=3D0 width=3D"100%"
 style=3D'width:100.0%'>
 <tr>
  <td width=3D"26%" valign=3Dtop style=3D'width:26.0%;padding:.75pt =
.75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><b><font =
size=3D1
  face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:7.5pt;font-family:sans-serif;
  font-weight:bold'>&quot;zhangyunfei&quot; =
&lt;zhangyunfei@chinamobile.com&gt;</span></font></b><font
  size=3D1 face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:7.5pt;font-family:
  sans-serif'> </span></font><font size=3D3 face=3D=CB=CE=CC=E5><span =
lang=3DEN-US
  style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><br>
  </span></font><font size=3D1 face=3D=CB=CE=CC=E5><span =
style=3D'font-size:7.5pt;font-family:
  =CB=CE=CC=E5'>=B7=A2=BC=FE=C8=CB</span></font><font size=3D1 =
face=3Dsans-serif><span lang=3DEN-US
  style=3D'font-size:7.5pt;font-family:sans-serif'>: =
&nbsp;ppsp-bounces@ietf.org</span></font><font
  size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'> =
<o:p></o:p></span></font></p>
  <p><font size=3D1 face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:7.5pt;
  font-family:sans-serif'>2009-12-26 16:52</span></font><span =
lang=3DEN-US> <o:p></o:p></span></p>
  </td>
  <td width=3D"73%" valign=3Dtop style=3D'width:73.0%;padding:.75pt =
.75pt .75pt .75pt'>
  <table class=3DMsoNormalTable border=3D0 cellpadding=3D0 =
width=3D"100%"
   style=3D'width:100.0%'>
   <tr>
    <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
    <p class=3DMsoNormal align=3Dright style=3D'text-align:right'><font =
size=3D1
    face=3D=CB=CE=CC=E5><span =
style=3D'font-size:7.5pt;font-family:=CB=CE=CC=E5'>=CA=D5=BC=FE=C8=CB</sp=
an></font><font
    size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
    </td>
    <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
    <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D1
    face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:7.5pt;font-family:sans-serif'>&quot;ppsp@ietf.org&quot=
;
    &lt;ppsp@ietf.org&gt;</span></font><font size=3D3 =
face=3D=CB=CE=CC=E5><span lang=3DEN-US
    style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'> =
<o:p></o:p></span></font></p>
    </td>
   </tr>
   <tr>
    <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
    <p class=3DMsoNormal align=3Dright style=3D'text-align:right'><font =
size=3D1
    face=3D=CB=CE=CC=E5><span =
style=3D'font-size:7.5pt;font-family:=CB=CE=CC=E5'>=B3=AD=CB=CD</span></f=
ont><font
    size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
    </td>
    <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
    <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D3 face=3D=CB=CE=CC=E5><span
    lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p>&nbsp;</o:p></sp=
an></font></p>
    </td>
   </tr>
   <tr>
    <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
    <p class=3DMsoNormal align=3Dright style=3D'text-align:right'><font =
size=3D1
    face=3D=CB=CE=CC=E5><span =
style=3D'font-size:7.5pt;font-family:=CB=CE=CC=E5'>=D6=F7=CC=E2</span></f=
ont><font
    size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
    </td>
    <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
    <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D1
    face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:7.5pt;font-family:sans-serif'>[ppsp]
    ppsp revised charter proposal</span></font><font size=3D3 =
face=3D=CB=CE=CC=E5><span
    lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
    </td>
   </tr>
  </table>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D3 face=3D=CB=CE=CC=E5><span
  lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p>&nbsp;</o:p></sp=
an></font></p>
  <table class=3DMsoNormalTable border=3D0 cellpadding=3D0>
   <tr>
    <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
    <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D3 face=3D=CB=CE=CC=E5><span
    lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p>&nbsp;</o:p></sp=
an></font></p>
    </td>
    <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
    <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D3 face=3D=CB=CE=CC=E5><span
    lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p>&nbsp;</o:p></sp=
an></font></p>
    </td>
   </tr>
  </table>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D3 face=3D=CB=CE=CC=E5><span
  lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
  </td>
 </tr>
</table>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'><br>
<br>
<br>
</span></font><font size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;
font-family:=CB=CE=CC=E5'>&nbsp;</span></font><font size=3D2 =
face=3DVerdana><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:Verdana'>Dear all, =
<o:p></o:p></span></font></p>

<p><font size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;
font-family:Verdana'>&nbsp; &nbsp;The latest version of PPSP charter is
attached.Welcome to comment on this.I guess many of you guys are =
enjoying the Christmas
holiday.Merry X'mas and happy new year!Wish to hear your valuable =
suggestions
in the beginning of 2010.:) <o:p></o:p></span></font></p>

<p><font size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;
font-family:Verdana'>&nbsp; &nbsp;Hope PPSP can have a great development =
in the
new year with all of your participation and contribution. =
<o:p></o:p></span></font></p>

<p><font size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;
font-family:Verdana'>The main modifications are: =
<o:p></o:p></span></font></p>

<p><font size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;
font-family:Verdana'>1)<st1:place w:st=3D"on">Para</st1:place> 2: =
<o:p></o:p></span></font></p>

<p><font size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;
font-family:Verdana'>a)wish to make it better understood about what the =
tracker
protocol and the peer protocol differ in and reply the BOF comments that =
the
two protocols may be a single one; <o:p></o:p></span></font></p>

<p><font size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;
font-family:Verdana'>b)Add the NAT issue raised in the BOF; =
<o:p></o:p></span></font></p>

<p><font size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;
font-family:Verdana'>2)Para3: <o:p></o:p></span></font></p>

<p><font size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;
font-family:Verdana'>a) Para3-</span></font><font size=3D2 =
face=3DArial><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:Arial'>bullet =
4,adding the
gossip communication in peer protocol as discussed in the mailing =
list;</span></font><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
<o:p></o:p></span></font></p>

<p><font size=3D2 face=3DArial><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:
Arial'>b)Para3-bullet7, deleted as suggested by Lars that optional part =
can be
detered until we think it clearer;</span></font><font size=3D2 =
face=3DVerdana><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:Verdana'> =
<o:p></o:p></span></font></p>

<p><font size=3D2 face=3DArial><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:
Arial'>3)Para4, adding LEDBAT as reference raised in the =
BOF.</span></font><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
<o:p></o:p></span></font></p>

<p><font size=3D2 face=3DArial><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:
Arial'>4)Para5,deleting privay raised in the BOF.</span></font><font =
size=3D2
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'> =
<o:p></o:p></span></font></p>

<p><font size=3D2 face=3DArial><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:
Arial'>5)Para6:</span></font><font size=3D2 face=3DVerdana><span =
lang=3DEN-US
style=3D'font-size:10.0pt;font-family:Verdana'> =
<o:p></o:p></span></font></p>

<p><font size=3D2 face=3DArial><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:
Arial'>a)bullet1:Adding the description of considering the NAT traversal =
and
the multiple stream senario as discussed in the BOF and mailing =
list.</span></font><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
<o:p></o:p></span></font></p>

<p><font size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;
font-family:Verdana'>BR <o:p></o:p></span></font></p>

<p><font size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;
font-family:Verdana'>Yunfei <o:p></o:p></span></font></p>

<p><font size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;
font-family:Verdana'>****************************************************=
*********************
<br>
</span></font><b><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:"Courier =
New";font-weight:bold'>Description
of PPSP Working Group:</span></font></b><font size=3D2 =
face=3DVerdana><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:Verdana'> <br>
</span></font><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:"Courier New"'>The Peer-to-Peer =
(P2P)
Streaming Protocol working group (PPSP WG) is chartered to develop =
standard
signaling protocols (called PPSP protocols) for multiple types of =
entities
(e.g. intelligent endpoints, caches, content distribution network nodes, =
and/or
other edge devices) to participate in P2P streaming systems in both =
fixed and
mobile Internet.</span></font><font size=3D2 face=3DVerdana><span =
lang=3DEN-US
style=3D'font-size:10.0pt;font-family:Verdana'> <br>
</span></font><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:"Courier New"'><br>
There are two kinds of components in PPSP protocols, i.e., =
=A1=B0trackers=A1=B1 and
=A1=B0peers=A1=B1. PPSP protocols include the PPSP tracker protocol =A8C =
a signaling
protocol between =A1=B0trackers=A1=B1 and =A1=B0peers=A1=B1, and the =
PPSP peer protocol =A8C a
signaling protocol among =A1=B0peers=A1=B1. The two protocols ensure =
peers to get
streaming data within certain time constraints. PPSP tracker protocol =
deals with
the initial and periodical exchanges between tracker and peers: =
initially the
peers contact the tracker to report their static information (like IP =
address,
NAT types and other useful things) and get a list of peers for a =
specific
channel or streaming file from the tracker; periodically the tracker =
maintains
lists of participating peers according to the report from the peers =
about their
status information. PPSP peer protocol deals with the exchanges among =
peers.
The peer exchanges its data availability and neighbor peer information =
with
other peers. With these information, it can connect with these peers for
further data downloading. &nbsp;</span></font><font size=3D2 =
face=3DVerdana><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:Verdana'> <br>
&nbsp; <br>
</span></font><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:"Courier New"'>This WG's primary =
tasks are
to produce:<br>
1. A =A1=B0problem statement=A1=B1 document describing the problems, =
incentives, and
scope of developing the PPSP protocols, as well as common terminologies =
and
concepts.</span></font><font size=3D2 face=3DVerdana><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:Verdana'> <br>
</span></font><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:"Courier =
New"'>&nbsp;</span></font><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
<br>
</span></font><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:"Courier New"'>2. A =
=A1=B0requirements=A1=B1 document
listing the requirements on the designed PPSP protocols (e.g., general
functionality and performance requirements of PPSP protocols or basic =
types of
information that PPSP protocols should communicate to facilitate P2P
streaming).</span></font><font size=3D2 face=3DVerdana><span =
lang=3DEN-US
style=3D'font-size:10.0pt;font-family:Verdana'> <br>
</span></font><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:"Courier New"'><br>
3. An &quot;architectural survey&quot; document explaining the current =
P2P
streaming architectures, in particular tracker-based P2P streaming, and =
key
issues in best practice.</span></font><font size=3D2 =
face=3DVerdana><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:Verdana'> <br>
</span></font><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:"Courier New"'><br>
4. A proposed standard defining the PPSP peer protocol. This protocol =
will
define how PPSP peers advertise data availability and exchange neighbor =
peers.
The protocol will also define the requests and responses of data chunks =
among
PPSP peers.</span></font><font size=3D2 face=3DVerdana><span =
lang=3DEN-US
style=3D'font-size:10.0pt;font-family:Verdana'> <br>
</span></font><font face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-family:
"Courier New"'>&nbsp;</span></font><font size=3D2 face=3DVerdana><span =
lang=3DEN-US
style=3D'font-size:10.0pt;font-family:Verdana'> <br>
</span></font><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:"Courier New"'>5. A proposed =
standard
defining the PPSP tracker protocol. This protocol will define how PPSP =
peers
inform and request information from PPSP trackers and how PPSP trackers =
reply
to the requests.</span></font><font size=3D2 face=3DVerdana><span =
lang=3DEN-US
style=3D'font-size:10.0pt;font-family:Verdana'> <br>
</span></font><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:"Courier =
New"'>&nbsp;</span></font><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
<br>
</span></font><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:"Courier New"'>6. A =A1=B0usage =
document=A1=B1
explaining how the protocols defined above, along with existing IETF =
protocols,
such as RELAOD, ALTO and RTSP, can inter-operate; and how they may be
integrated together to produce complete P2P streaming =
systems.</span></font><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
<br>
</span></font><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:"Courier =
New"'>&nbsp;</span></font><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
<br>
</span></font><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:"Courier New"'><br>
The work planned for the PPSP WG is distinct from, but requires close
participation with, work in other IETF WGs, particularly P2PSIP, =
ALTO,LEDBAT
and MMUSIC. The PPSP WG assumes that it cannot modify baseline P2PSIP, =
ALTO,
LEDBAT and MMUSIC behaviors. If PPSP determines that extensions to =
P2PSIP,
ALTO,LEDBAT and MMUSIC are needed, PPSP will seek to define such =
extensions and
present to the respective working groups.</span></font><font size=3D2
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'> <br>
</span></font><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:"Courier New"'><br>
The design of PPSP has to consider security issues. The protocol =
document will
contain a complete description of the security issues that PPSP should =
address.</span></font><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
<br>
</span></font><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:"Courier =
New"'>&nbsp;</span></font><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
<br>
</span></font><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:"Courier New"'>The following =
topics are
excluded from this WG's scope:<br>
1. Transport mechanisms for data transmission among PPSP peers, e.g. =
using TCP
or UDP, unicast or multicast, etc. However the &nbsp;design &nbsp;of =
&nbsp;PPSP
&nbsp;will &nbsp;consider how it can be combined with the transport =
mechanisms,
including NAT traversal problem. The design of PPSP will also consider =
the
scenario of transmission of multiple streams &nbsp;(layered =
&nbsp;media). &nbsp;This
includes considering various media descriptions (e.g. data chunk =
description in
peer protocol) after investigating different media coding mechanisms =
(e.g. SVC,
MDC) to incorporate their features in the protocol.</span></font><font =
size=3D2
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'> <br>
</span></font><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:"Courier New"'><br>
2. Network coding mechanisms in P2P streaming. Network coding may be =
used in
P2P streaming, but its support is beyond the scope of current =
charter.</span></font><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
<br>
</span></font><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:"Courier =
New"'>&nbsp;</span></font><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
<br>
</span></font><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:"Courier New"'>3. Play-out =
mechanisms
including streaming control (e.g., pause, fast-forward, and =
rewind).</span></font><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
<br>
</span></font><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:"Courier =
New"'>&nbsp;</span></font><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
<br>
</span></font><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:"Courier New"'>4. Algorithms that =
may be
different in different deployments (e.g., chunk selection, local storage
strategies).</span></font><font size=3D2 face=3DVerdana><span =
lang=3DEN-US
style=3D'font-size:10.0pt;font-family:Verdana'> <br>
</span></font><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:"Courier =
New"'>&nbsp;</span></font><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
<br>
</span></font><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:"Courier New"'>5. Research type =
questions
related to P2P streaming. This WG will instead forward such questions to =
the
IRTF P2PRG or other RG as appropriate. Examples include cache =
management.</span></font><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
<br>
</span></font><b><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:"Courier =
New";font-weight:bold'>Goals and
Milestones:</span></font></b><font size=3D2 face=3DVerdana><span =
lang=3DEN-US
style=3D'font-size:10.0pt;font-family:Verdana'> =
<o:p></o:p></span></font></p>

<table class=3DMsoNormalTable border=3D1 cellpadding=3D0 =
style=3D'border:outset 2.25pt'>
 <tr>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Apr
  2010</span></font><font size=3D3 face=3D=CB=CE=CC=E5><span =
lang=3DEN-US style=3D'font-size:
  12.0pt;font-family:=CB=CE=CC=E5'> <o:p></o:p></span></font></p>
  </td>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Working
  Group Last Call for problem statement</span></font><font size=3D3 =
face=3D=CB=CE=CC=E5><span
  lang=3DEN-US style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'> =
<o:p></o:p></span></font></p>
  </td>
 </tr>
 <tr>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Jun
  2010</span></font><font size=3D3 face=3D=CB=CE=CC=E5><span =
lang=3DEN-US style=3D'font-size:
  12.0pt;font-family:=CB=CE=CC=E5'> <o:p></o:p></span></font></p>
  </td>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Submit
  problem statement to IESG as Informational document</span></font><font
  size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'> =
<o:p></o:p></span></font></p>
  </td>
 </tr>
 <tr>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Aug
  2010</span></font><font size=3D3 face=3D=CB=CE=CC=E5><span =
lang=3DEN-US style=3D'font-size:
  12.0pt;font-family:=CB=CE=CC=E5'> <o:p></o:p></span></font></p>
  </td>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Working
  Group Last Call for architecture survey</span></font><font size=3D3 =
face=3D=CB=CE=CC=E5><span
  lang=3DEN-US style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'> =
<o:p></o:p></span></font></p>
  </td>
 </tr>
 <tr>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Aug
  2010</span></font><font size=3D3 face=3D=CB=CE=CC=E5><span =
lang=3DEN-US style=3D'font-size:
  12.0pt;font-family:=CB=CE=CC=E5'> <o:p></o:p></span></font></p>
  </td>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Working
  Group Last Call for requirements</span></font><font size=3D3 =
face=3D=CB=CE=CC=E5><span
  lang=3DEN-US style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'> =
<o:p></o:p></span></font></p>
  </td>
 </tr>
 <tr>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier =
New"'>Oct</span></font><font
  size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'> <br>
  </span></font><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
  style=3D'font-size:10.0pt;font-family:"Courier =
New"'>2010</span></font><font
  size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'> =
<o:p></o:p></span></font></p>
  </td>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Submit
  architecture survey to IESG as Informational =
document</span></font><font
  size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'> =
<o:p></o:p></span></font></p>
  </td>
 </tr>
 <tr>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Oct
  2010</span></font><font size=3D3 face=3D=CB=CE=CC=E5><span =
lang=3DEN-US style=3D'font-size:
  12.0pt;font-family:=CB=CE=CC=E5'> <o:p></o:p></span></font></p>
  </td>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Submit
  requirements to IESG as Informational document</span></font><font =
size=3D3
  face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'> =
<o:p></o:p></span></font></p>
  </td>
 </tr>
 <tr>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Apr
  2011</span></font><font size=3D3 face=3D=CB=CE=CC=E5><span =
lang=3DEN-US style=3D'font-size:
  12.0pt;font-family:=CB=CE=CC=E5'> <o:p></o:p></span></font></p>
  </td>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Working
  Group Last Call for PPSP peer protocol</span></font><font size=3D3 =
face=3D=CB=CE=CC=E5><span
  lang=3DEN-US style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'> =
<o:p></o:p></span></font></p>
  </td>
 </tr>
 <tr>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier =
New"'>Apr</span></font><font
  size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'> <br>
  </span></font><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
  style=3D'font-size:10.0pt;font-family:"Courier =
New"'>2011</span></font><font
  size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'> =
<o:p></o:p></span></font></p>
  </td>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Working
  Group Last Call for PPSP tracker protocol</span></font><font size=3D3 =
face=3D=CB=CE=CC=E5><span
  lang=3DEN-US style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'> =
<o:p></o:p></span></font></p>
  </td>
 </tr>
 <tr>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Aug
  2011</span></font><font size=3D3 face=3D=CB=CE=CC=E5><span =
lang=3DEN-US style=3D'font-size:
  12.0pt;font-family:=CB=CE=CC=E5'> <o:p></o:p></span></font></p>
  </td>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Submit
  PPSP peer protocol to IESG as Proposed Standard</span></font><font =
size=3D3
  face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'> =
<o:p></o:p></span></font></p>
  </td>
 </tr>
 <tr>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Aug
  2011</span></font><font size=3D3 face=3D=CB=CE=CC=E5><span =
lang=3DEN-US style=3D'font-size:
  12.0pt;font-family:=CB=CE=CC=E5'> <o:p></o:p></span></font></p>
  </td>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Submit
  PPSP tracker protocol to IESG as Proposed Standard</span></font><font =
size=3D3
  face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'> =
<o:p></o:p></span></font></p>
  </td>
 </tr>
 <tr>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Nov
  2011</span></font><font size=3D3 face=3D=CB=CE=CC=E5><span =
lang=3DEN-US style=3D'font-size:
  12.0pt;font-family:=CB=CE=CC=E5'> <o:p></o:p></span></font></p>
  </td>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Working
  Group Last Call of usage document</span></font><font size=3D3 =
face=3D=CB=CE=CC=E5><span
  lang=3DEN-US style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'> =
<o:p></o:p></span></font></p>
  </td>
 </tr>
 <tr>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Nov
  2011</span></font><font size=3D3 face=3D=CB=CE=CC=E5><span =
lang=3DEN-US style=3D'font-size:
  12.0pt;font-family:=CB=CE=CC=E5'> <o:p></o:p></span></font></p>
  </td>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Working
  Group Last Call of mobility BCP document</span></font><font size=3D3 =
face=3D=CB=CE=CC=E5><span
  lang=3DEN-US style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'> =
<o:p></o:p></span></font></p>
  </td>
 </tr>
 <tr>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Jan
  2012</span></font><font size=3D3 face=3D=CB=CE=CC=E5><span =
lang=3DEN-US style=3D'font-size:
  12.0pt;font-family:=CB=CE=CC=E5'> <o:p></o:p></span></font></p>
  </td>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Submit
  usage document to IESG as Informational document</span></font><font =
size=3D3
  face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'> =
<o:p></o:p></span></font></p>
  </td>
 </tr>
 <tr>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Jan
  2012</span></font><font size=3D3 face=3D=CB=CE=CC=E5><span =
lang=3DEN-US style=3D'font-size:
  12.0pt;font-family:=CB=CE=CC=E5'> <o:p></o:p></span></font></p>
  </td>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Submit
  mobility BCP document to IESG as Informational =
document</span></font><font
  size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'> =
<o:p></o:p></span></font></p>
  </td>
 </tr>
 <tr>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Apr
  2012</span></font><font size=3D3 face=3D=CB=CE=CC=E5><span =
lang=3DEN-US style=3D'font-size:
  12.0pt;font-family:=CB=CE=CC=E5'> <o:p></o:p></span></font></p>
  </td>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Dissolve
  or re-charter </span></font><font size=3D3 face=3D=CB=CE=CC=E5><span =
lang=3DEN-US
  =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
  </td>
 </tr>
</table>

<p><font size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;
font-family:Verdana'><br>
&nbsp; <o:p></o:p></span></font></p>

<div class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><font =
size=3D2
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>

<hr size=3D2 width=3D"100%" align=3Dcenter>

</span></font></div>

<p class=3DMsoNormal align=3Dleft =
style=3D'margin-bottom:12.0pt;text-align:left'><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'><br>
<font color=3Dsilver><span =
style=3D'color:silver'>zhangyunfei</span></font> <br>
<st1:chsdate IsROCDate=3D"False" IsLunarDate=3D"False" Day=3D"26" =
Month=3D"12"
Year=3D"2009" w:st=3D"on"><font color=3Dsilver><span =
style=3D'color:silver'>2009-12-26</span></font></st1:chsdate></span></fon=
t><tt><font
size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt'>______________________________________________=
_</span></font></tt><font
size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><br>
<tt><font face=3D=CB=CE=CC=E5>ppsp mailing list</font></tt><br>
<tt><font face=3D=CB=CE=CC=E5>ppsp@ietf.org</font></tt><br>
<tt><font =
face=3D=CB=CE=CC=E5>https://www.ietf.org/mailman/listinfo/ppsp</font></tt=
><o:p></o:p></span></font></p>

</div>

</div>

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Date: Mon, 28 Dec 2009 13:52:50 +0800
From: "Y.J. Gu" <guyingjie@huawei.com>
In-reply-to: <OF42125F45.CA0417C4-ON4825769A.000E5317-4825769A.00100B73@zte.com.cn>
To: li.lichun1@zte.com.cn, 'zhangyunfei' <zhangyunfei@chinamobile.com>
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Subject: Re: [ppsp] ppsp revised charter proposal
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Yes. And I' m afraid that 'neighbor peer' is not a suitable expression =
in
the system we are talking about.  'Neighbor peer' works  in Routing =
Table.
=20
=20

Regards

Yingjie Gu

=20


  _____ =20

From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of
li.lichun1@zte.com.cn
Sent: Monday, December 28, 2009 10:54 AM
To: zhangyunfei
Cc: ppsp@ietf.org
Subject: Re: [ppsp] ppsp revised charter proposal



The charter says "exchange neighbor peers". I think the peer list may
include peers other than neighbors. Peers can also exchange neighbors of
neighbors and non-neighbor peers known from tracker.=20


BR,=20
Lichun




"zhangyunfei" <zhangyunfei@chinamobile.com>=20


2009-12-28 10:13=20


=CA=D5=BC=FE=C8=CB
"li.lichun1@zte.com.cn" <li.lichun1@zte.com.cn>=20

=B3=AD=CB=CD
"ppsp@ietf.org" <ppsp@ietf.org>=20

=D6=F7=CC=E2
Re: re: [ppsp] ppsp revised charter proposal

=09




Yes,you are right,Lichun.=20
As suggested in the BOF and mailing list,peer gossip(including exchange =
of
peer list)can make peers know more peers and alleviate the burden of the
tracker.=20
 =20
BR=20
Yunfei=20
 =20

  _____ =20


zhangyunfei=20
2009-12-28=20

  _____ =20


=B7=A2=BC=FE=C8=CB=A3=BA li.lichun1@zte.com.cn=20
=B7=A2=CB=CD=CA=B1=BC=E4=A3=BA 2009-12-28 09:36:31=20
=CA=D5=BC=FE=C8=CB=A3=BA zhangyunfei=20
=B3=AD=CB=CD=A3=BA ppsp@ietf.org; ppsp-bounces@ietf.org=20
=D6=F7=CC=E2=A3=BA re: [ppsp] ppsp revised charter proposal=20
 =20

Hi, yunfei.=20
Peers can exchange peer lists, right?=20


Best regards,
Lichun Li



"zhangyunfei" <zhangyunfei@chinamobile.com>=20
=B7=A2=BC=FE=C8=CB:  ppsp-bounces@ietf.org=20


2009-12-26 16:52=20




=CA=D5=BC=FE=C8=CB
"ppsp@ietf.org" <ppsp@ietf.org>=20

=B3=AD=CB=CD

=D6=F7=CC=E2
[ppsp] ppsp revised charter proposal


=09





Dear all,=20

   The latest version of PPSP charter is attached.Welcome to comment on
this.I guess many of you guys are enjoying the Christmas holiday.Merry =
X'mas
and happy new year!Wish to hear your valuable suggestions in the =
beginning
of 2010.:)=20


   Hope PPSP can have a great development in the new year with all of =
your
participation and contribution.=20


The main modifications are:=20


1)Para 2:=20


a)wish to make it better understood about what the tracker protocol and =
the
peer protocol differ in and reply the BOF comments that the two =
protocols
may be a single one;=20


b)Add the NAT issue raised in the BOF;=20


2)Para3:=20


a) Para3-bullet 4,adding the gossip communication in peer protocol as
discussed in the mailing list;=20


b)Para3-bullet7, deleted as suggested by Lars that optional part can be
detered until we think it clearer;=20


3)Para4, adding LEDBAT as reference raised in the BOF.=20


4)Para5,deleting privay raised in the BOF.=20


5)Para6:=20


a)bullet1:Adding the description of considering the NAT traversal and =
the
multiple stream senario as discussed in the BOF and mailing list.=20


BR=20


Yunfei=20


*************************************************************************=
=20
Description of PPSP Working Group:=20
The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is
chartered to develop standard signaling protocols (called PPSP =
protocols)
for multiple types of entities (e.g. intelligent endpoints, caches, =
content
distribution network nodes, and/or other edge devices) to participate in =
P2P
streaming systems in both fixed and mobile Internet.=20

There are two kinds of components in PPSP protocols, i.e., =
=A1=B0trackers=A1=B1 and
=A1=B0peers=A1=B1. PPSP protocols include the PPSP tracker protocol =A8C =
a signaling
protocol between =A1=B0trackers=A1=B1 and =A1=B0peers=A1=B1, and the =
PPSP peer protocol =A8C a
signaling protocol among =A1=B0peers=A1=B1. The two protocols ensure =
peers to get
streaming data within certain time constraints. PPSP tracker protocol =
deals
with the initial and periodical exchanges between tracker and peers:
initially the peers contact the tracker to report their static =
information
(like IP address, NAT types and other useful things) and get a list of =
peers
for a specific channel or streaming file from the tracker; periodically =
the
tracker maintains lists of participating peers according to the report =
from
the peers about their status information. PPSP peer protocol deals with =
the
exchanges among peers. The peer exchanges its data availability and =
neighbor
peer information with other peers. With these information, it can =
connect
with these peers for further data downloading.  =20
=20
This WG's primary tasks are to produce:
1. A =A1=B0problem statement=A1=B1 document describing the problems, =
incentives, and
scope of developing the PPSP protocols, as well as common terminologies =
and
concepts.=20
=20
2. A =A1=B0requirements=A1=B1 document listing the requirements on the =
designed PPSP
protocols (e.g., general functionality and performance requirements of =
PPSP
protocols or basic types of information that PPSP protocols should
communicate to facilitate P2P streaming).=20

3. An "architectural survey" document explaining the current P2P =
streaming
architectures, in particular tracker-based P2P streaming, and key issues =
in
best practice.=20

4. A proposed standard defining the PPSP peer protocol. This protocol =
will
define how PPSP peers advertise data availability and exchange neighbor
peers. The protocol will also define the requests and responses of data
chunks among PPSP peers.=20
=20
5. A proposed standard defining the PPSP tracker protocol. This protocol
will define how PPSP peers inform and request information from PPSP =
trackers
and how PPSP trackers reply to the requests.=20
=20
6. A =A1=B0usage document=A1=B1 explaining how the protocols defined =
above, along
with existing IETF protocols, such as RELAOD, ALTO and RTSP, can
inter-operate; and how they may be integrated together to produce =
complete
P2P streaming systems.=20
=20

The work planned for the PPSP WG is distinct from, but requires close
participation with, work in other IETF WGs, particularly P2PSIP, =
ALTO,LEDBAT
and MMUSIC. The PPSP WG assumes that it cannot modify baseline P2PSIP, =
ALTO,
LEDBAT and MMUSIC behaviors. If PPSP determines that extensions to =
P2PSIP,
ALTO,LEDBAT and MMUSIC are needed, PPSP will seek to define such =
extensions
and present to the respective working groups.=20

The design of PPSP has to consider security issues. The protocol =
document
will contain a complete description of the security issues that PPSP =
should
address.=20
=20
The following topics are excluded from this WG's scope:
1. Transport mechanisms for data transmission among PPSP peers, e.g. =
using
TCP or UDP, unicast or multicast, etc. However the  design  of  PPSP  =
will
consider how it can be combined with the transport mechanisms, including =
NAT
traversal problem. The design of PPSP will also consider the scenario of
transmission of multiple streams  (layered  media).  This includes
considering various media descriptions (e.g. data chunk description in =
peer
protocol) after investigating different media coding mechanisms (e.g. =
SVC,
MDC) to incorporate their features in the protocol.=20

2. Network coding mechanisms in P2P streaming. Network coding may be =
used in
P2P streaming, but its support is beyond the scope of current charter.=20
=20
3. Play-out mechanisms including streaming control (e.g., pause,
fast-forward, and rewind).=20
=20
4. Algorithms that may be different in different deployments (e.g., =
chunk
selection, local storage strategies).=20
=20
5. Research type questions related to P2P streaming. This WG will =
instead
forward such questions to the IRTF P2PRG or other RG as appropriate.
Examples include cache management.=20
Goals and Milestones:=20




Apr 2010 	Working Group Last Call for problem statement=20

Jun 2010 	Submit problem statement to IESG as Informational document=20

Aug 2010 	Working Group Last Call for architecture survey=20

Aug 2010 	Working Group Last Call for requirements=20

Oct=20
2010 	Submit architecture survey to IESG as Informational document=20

Oct 2010 	Submit requirements to IESG as Informational document=20

Apr 2011 	Working Group Last Call for PPSP peer protocol=20

Apr=20
2011 	Working Group Last Call for PPSP tracker protocol=20

Aug 2011 	Submit PPSP peer protocol to IESG as Proposed Standard=20

Aug 2011 	Submit PPSP tracker protocol to IESG as Proposed Standard=20

Nov 2011 	Working Group Last Call of usage document=20

Nov 2011 	Working Group Last Call of mobility BCP document=20

Jan 2012 	Submit usage document to IESG as Informational document=20

Jan 2012 	Submit mobility BCP document to IESG as Informational
document=20

Apr 2012 	Dissolve or re-charter=20


 =20



  _____ =20


zhangyunfei=20
2009-12-26_______________________________________________
ppsp mailing list
ppsp@ietf.org
https://www.ietf.org/mailman/listinfo/ppsp


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--Boundary_(ID_zCVofMULG82ocUq+NBg2Ow)
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<BODY>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D445084805-28122009><FONT=20
face=3D"Times New Roman" color=3D#0000ff size=3D5>Yes. And&nbsp;I' m =
afraid that=20
'neighbor peer' is not a suitable expression in the system we are =
talking=20
about.&nbsp; 'Neighbor peer' works&nbsp; in Routing =
Table.</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D445084805-28122009><FONT=20
face=3D"Times New Roman" color=3D#0000ff =
size=3D5></FONT></SPAN>&nbsp;</DIV>
<DIV>&nbsp;</DIV>
<DIV align=3Dleft><FONT size=3D2>
<P class=3DMsoSalutation style=3D"MARGIN: 0cm 0cm 0pt" =
align=3Dleft><SPAN=20
style=3D"FONT-FAMILY: =CB=CE=CC=E5; mso-ascii-font-family: Arial; =
mso-hansi-font-family: Arial"></SPAN><SPAN=20
lang=3DEN-US><?xml:namespace prefix =3D o ns =3D=20
"urn:schemas-microsoft-com:office:office" /><o:p></o:p></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt" align=3Dleft><SPAN=20
style=3D"FONT-SIZE: 9pt; LINE-HEIGHT: 150%; FONT-FAMILY: =CB=CE=CC=E5; =
mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; =
mso-bidi-font-size: 10.0pt; mso-bidi-font-family: Arial"><FONT=20
size=3D4>Regards</FONT></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt"></FONT><SPAN =
lang=3DEN-US=20
style=3D"FONT-SIZE: 9pt; LINE-HEIGHT: 150%; FONT-FAMILY: Arial; =
mso-bidi-font-size: 10.0pt"><FONT=20
size=3D4>Yingjie Gu</FONT></SPAN></P></DIV>
<DIV>&nbsp;</DIV><BR>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px =
solid; MARGIN-RIGHT: 0px">
  <DIV class=3DOutlookMessageHeader lang=3Dzh-cn dir=3Dltr align=3Dleft>
  <HR tabIndex=3D-1>
  <FONT face=3DTahoma size=3D2><B>From:</B> ppsp-bounces@ietf.org=20
  [mailto:ppsp-bounces@ietf.org] <B>On Behalf Of=20
  </B>li.lichun1@zte.com.cn<BR><B>Sent:</B> Monday, December 28, 2009 =
10:54=20
  AM<BR><B>To:</B> zhangyunfei<BR><B>Cc:</B> =
ppsp@ietf.org<BR><B>Subject:</B>=20
  Re: [ppsp] ppsp revised charter proposal<BR></FONT><BR></DIV>
  <DIV></DIV><BR><FONT face=3Dsans-serif size=3D2>The charter says =
"</FONT><FONT=20
  face=3D"Courier New" size=3D2>exchange neighbor peers</FONT><FONT =
face=3Dsans-serif=20
  size=3D2>". I think the peer list may include peers other than =
neighbors. Peers=20
  can also exchange neighbors of neighbors and non-neighbor peers known =
from=20
  tracker. </FONT><BR><FONT face=3Dsans-serif =
size=3D2><BR><BR>BR,</FONT> <BR><FONT=20
  face=3Dsans-serif size=3D2>Lichun<BR></FONT><BR><BR><BR>
  <TABLE width=3D"100%">
    <TBODY>
    <TR vAlign=3Dtop>
      <TD width=3D"26%"><FONT face=3Dsans-serif =
size=3D1><B>"zhangyunfei"=20
        &lt;zhangyunfei@chinamobile.com&gt;</B> </FONT>
        <P><FONT face=3Dsans-serif size=3D1>2009-12-28 10:13</FONT> </P>
      <TD width=3D"73%">
        <TABLE width=3D"100%">
          <TBODY>
          <TR vAlign=3Dtop>
            <TD>
              <DIV align=3Dright><FONT face=3Dsans-serif =
size=3D1>=CA=D5=BC=FE=C8=CB</FONT></DIV>
            <TD><FONT face=3Dsans-serif size=3D1>"li.lichun1@zte.com.cn" =

              &lt;li.lichun1@zte.com.cn&gt;</FONT>=20
          <TR vAlign=3Dtop>
            <TD>
              <DIV align=3Dright><FONT face=3Dsans-serif =
size=3D1>=B3=AD=CB=CD</FONT></DIV>
            <TD><FONT face=3Dsans-serif size=3D1>"ppsp@ietf.org"=20
              &lt;ppsp@ietf.org&gt;</FONT>=20
          <TR vAlign=3Dtop>
            <TD>
              <DIV align=3Dright><FONT face=3Dsans-serif =
size=3D1>=D6=F7=CC=E2</FONT></DIV>
            <TD><FONT face=3Dsans-serif size=3D1>Re: re: [ppsp] ppsp =
revised=20
              charter proposal</FONT></TR></TBODY></TABLE><BR>
        <TABLE>
          <TBODY>
          <TR vAlign=3Dtop>
            <TD>
            =
<TD></TR></TBODY></TABLE><BR></TR></TBODY></TABLE><BR><BR><BR><FONT=20
  face=3DVerdana color=3Dblue size=3D2>Yes,you are right,Lichun. =
</FONT><BR><FONT=20
  face=3DVerdana color=3Dblue size=3D2>As suggested in the BOF and =
mailing list,peer=20
  gossip(including exchange of peer list)can make peers know more peers =
and=20
  alleviate the burden of the tracker.</FONT> <BR><FONT =
face=3Dsans-serif=20
  size=3D3>&nbsp;</FONT> <BR><FONT face=3DVerdana color=3Dblue =
size=3D2>BR</FONT>=20
  <BR><FONT face=3DVerdana color=3Dblue size=3D2>Yunfei</FONT> <BR><FONT =

  face=3Dsans-serif size=3D3>&nbsp;</FONT> <BR>
  <HR>
  <BR><FONT face=3DVerdana color=3D#c0c0c0 size=3D2>zhangyunfei</FONT> =
<BR><FONT=20
  face=3DVerdana color=3D#c0c0c0 size=3D2>2009-12-28</FONT> <BR>
  <HR>
  <BR><FONT face=3DVerdana size=3D2><B>=B7=A2=BC=FE=C8=CB=A3=BA</B> =
li.lichun1@zte.com.cn</FONT>=20
  <BR><FONT face=3DVerdana =
size=3D2><B>=B7=A2=CB=CD=CA=B1=BC=E4=A3=BA</B> 2009-12-28 =
09:36:31</FONT>=20
  <BR><FONT face=3DVerdana size=3D2><B>=CA=D5=BC=FE=C8=CB=A3=BA</B> =
zhangyunfei</FONT> <BR><FONT=20
  face=3DVerdana size=3D2><B>=B3=AD=CB=CD=A3=BA</B> ppsp@ietf.org; =
ppsp-bounces@ietf.org</FONT>=20
  <BR><FONT face=3DVerdana size=3D2><B>=D6=F7=CC=E2=A3=BA</B> re: [ppsp] =
ppsp revised charter=20
  proposal</FONT> <BR><FONT face=3Dsans-serif size=3D3>&nbsp;</FONT> =
<BR><FONT=20
  face=3Dsans-serif size=3D2><BR>Hi, yunfei.</FONT><FONT face=3DVerdana =
size=3D2>=20
  </FONT><FONT face=3Dsans-serif size=3D2><BR>Peers can exchange peer =
lists,=20
  right?</FONT><FONT face=3DVerdana size=3D2> </FONT><FONT =
face=3Dsans-serif=20
  size=3D2><BR><BR><BR>Best regards,<BR>Lichun Li</FONT><FONT =
face=3DVerdana=20
  size=3D2><BR><BR><BR></FONT>
  <TABLE width=3D"100%">
    <TBODY>
    <TR vAlign=3Dtop>
      <TD width=3D"54%"><FONT face=3Dsans-serif =
size=3D1><B>"zhangyunfei"=20
        &lt;zhangyunfei@chinamobile.com&gt;</B> <BR>=B7=A2=BC=FE=C8=CB:=20
        &nbsp;ppsp-bounces@ietf.org</FONT><FONT face=3Dsans-serif =
size=3D3> </FONT>
        <P><FONT face=3Dsans-serif size=3D1>2009-12-26 16:52</FONT><FONT =

        face=3Dsans-serif size=3D3> </FONT></P>
      <TD width=3D"45%"><BR>
        <TABLE width=3D"100%">
          <TBODY>
          <TR vAlign=3Dtop>
            <TD width=3D"14%">
              <DIV align=3Dright><FONT face=3Dsans-serif =
size=3D1>=CA=D5=BC=FE=C8=CB</FONT></DIV>
            <TD width=3D"85%"><FONT face=3Dsans-serif =
size=3D1>"ppsp@ietf.org"=20
              &lt;ppsp@ietf.org&gt;</FONT><FONT face=3Dsans-serif =
size=3D3> </FONT>
          <TR vAlign=3Dtop>
            <TD>
              <DIV align=3Dright><FONT face=3Dsans-serif =
size=3D1>=B3=AD=CB=CD</FONT></DIV>
            <TD>
          <TR vAlign=3Dtop>
            <TD>
              <DIV align=3Dright><FONT face=3Dsans-serif =
size=3D1>=D6=F7=CC=E2</FONT></DIV>
            <TD><FONT face=3Dsans-serif size=3D1>[ppsp] ppsp revised =
charter=20
              proposal</FONT></TR></TBODY></TABLE><BR><BR>
        <TABLE width=3D"100%">
          <TBODY>
          <TR vAlign=3Dtop>
            <TD width=3D"50%">
            <TD =
width=3D"50%"></TR></TBODY></TABLE><BR></TR></TBODY></TABLE><BR><FONT=20
  face=3DVerdana size=3D2><BR><BR></FONT><FONT face=3D=CB=CE=CC=E5 =
size=3D3><BR></FONT><FONT=20
  face=3DVerdana size=3D2>Dear all, </FONT>
  <P><FONT face=3DVerdana size=3D2>&nbsp; &nbsp;The latest version of =
PPSP charter=20
  is attached.Welcome to comment on this.I guess many of you guys are =
enjoying=20
  the Christmas holiday.Merry X'mas and happy new year!Wish to hear your =

  valuable suggestions in the beginning of 2010.:) </FONT>
  <P><FONT face=3DVerdana size=3D2>&nbsp; &nbsp;Hope PPSP can have a =
great=20
  development in the new year with all of your participation and =
contribution.=20
  </FONT>
  <P><FONT face=3DVerdana size=3D2>The main modifications are: </FONT>
  <P><FONT face=3DVerdana size=3D2>1)Para 2: </FONT>
  <P><FONT face=3DVerdana size=3D2>a)wish to make it better understood =
about what=20
  the tracker protocol and the peer protocol differ in and reply the BOF =

  comments that the two protocols may be a single one; </FONT>
  <P><FONT face=3DVerdana size=3D2>b)Add the NAT issue raised in the =
BOF; </FONT>
  <P><FONT face=3DVerdana size=3D2>2)Para3: </FONT>
  <P><FONT face=3DVerdana size=3D2>a) Para3-</FONT><FONT face=3DArial =
size=3D2>bullet=20
  4,adding the gossip communication in peer protocol as discussed in the =
mailing=20
  list;</FONT><FONT face=3DVerdana size=3D2> </FONT>
  <P><FONT face=3DArial size=3D2>b)Para3-bullet7, deleted as suggested =
by Lars that=20
  optional part can be detered until we think it clearer;</FONT><FONT=20
  face=3DVerdana size=3D2> </FONT>
  <P><FONT face=3DArial size=3D2>3)Para4, adding LEDBAT as reference =
raised in the=20
  BOF.</FONT><FONT face=3DVerdana size=3D2> </FONT>
  <P><FONT face=3DArial size=3D2>4)Para5,deleting privay raised in the=20
  BOF.</FONT><FONT face=3DVerdana size=3D2> </FONT>
  <P><FONT face=3DArial size=3D2>5)Para6:</FONT><FONT face=3DVerdana =
size=3D2> </FONT>
  <P><FONT face=3DArial size=3D2>a)bullet1:Adding the description of =
considering the=20
  NAT traversal and the multiple stream senario as discussed in the BOF =
and=20
  mailing list.</FONT><FONT face=3DVerdana size=3D2> </FONT>
  <P><FONT face=3DVerdana size=3D2>BR </FONT>
  <P><FONT face=3DVerdana size=3D2>Yunfei </FONT>
  <P><FONT face=3DVerdana=20
  =
size=3D2>****************************************************************=
*********=20
  </FONT><FONT face=3D"Courier New" size=3D2><B><BR>Description of PPSP =
Working=20
  Group:</B></FONT><FONT face=3DVerdana size=3D2> </FONT><FONT =
face=3D"Courier New"=20
  size=3D2><BR>The Peer-to-Peer (P2P) Streaming Protocol working group =
(PPSP WG)=20
  is chartered to develop standard signaling protocols (called PPSP =
protocols)=20
  for multiple types of entities (e.g. intelligent endpoints, caches, =
content=20
  distribution network nodes, and/or other edge devices) to participate =
in P2P=20
  streaming systems in both fixed and mobile Internet.</FONT><FONT =
face=3DVerdana=20
  size=3D2> </FONT><FONT face=3D"Courier New" size=3D2><BR><BR>There are =
two kinds of=20
  components in PPSP protocols, i.e., =A1=B0trackers=A1=B1 and =
=A1=B0peers=A1=B1. PPSP protocols=20
  include the PPSP tracker protocol =A8C a signaling protocol between =
=A1=B0trackers=A1=B1=20
  and =A1=B0peers=A1=B1, and the PPSP peer protocol =A8C a signaling =
protocol among =A1=B0peers=A1=B1.=20
  The two protocols ensure peers to get streaming data within certain =
time=20
  constraints. PPSP tracker protocol deals with the initial and =
periodical=20
  exchanges between tracker and peers: initially the peers contact the =
tracker=20
  to report their static information (like IP address, NAT types and =
other=20
  useful things) and get a list of peers for a specific channel or =
streaming=20
  file from the tracker; periodically the tracker maintains lists of=20
  participating peers according to the report from the peers about their =
status=20
  information. PPSP peer protocol deals with the exchanges among peers. =
The peer=20
  exchanges its data availability and neighbor peer information with =
other=20
  peers. With these information, it can connect with these peers for =
further=20
  data downloading. &nbsp;</FONT><FONT face=3DVerdana size=3D2>=20
  <BR>&nbsp;</FONT><FONT face=3D"Courier New" size=3D2><BR>This WG's =
primary tasks=20
  are to produce:<BR>1. A =A1=B0problem statement=A1=B1 document =
describing the problems,=20
  incentives, and scope of developing the PPSP protocols, as well as =
common=20
  terminologies and concepts.</FONT><FONT face=3DVerdana size=3D2> =
</FONT><FONT=20
  face=3D"Courier New" size=3D2><BR></FONT><FONT face=3DVerdana=20
  size=3D2>&nbsp;</FONT><FONT face=3D"Courier New" size=3D2><BR>2. A =
=A1=B0requirements=A1=B1=20
  document listing the requirements on the designed PPSP protocols =
(e.g.,=20
  general functionality and performance requirements of PPSP protocols =
or basic=20
  types of information that PPSP protocols should communicate to =
facilitate P2P=20
  streaming).</FONT><FONT face=3DVerdana size=3D2> </FONT><FONT =
face=3D"Courier New"=20
  size=3D2><BR><BR>3. An "architectural survey" document explaining the =
current=20
  P2P streaming architectures, in particular tracker-based P2P =
streaming, and=20
  key issues in best practice.</FONT><FONT face=3DVerdana size=3D2> =
</FONT><FONT=20
  face=3D"Courier New" size=3D2><BR><BR>4. A proposed standard defining =
the PPSP=20
  peer protocol. This protocol will define how PPSP peers advertise data =

  availability and exchange neighbor peers. The protocol will also =
define the=20
  requests and responses of data chunks among PPSP peers.</FONT><FONT=20
  face=3DVerdana size=3D2> </FONT><FONT face=3D"Courier New" =
size=3D3><BR></FONT><FONT=20
  face=3DVerdana size=3D2>&nbsp;</FONT><FONT face=3D"Courier New" =
size=3D2><BR>5. A=20
  proposed standard defining the PPSP tracker protocol. This protocol =
will=20
  define how PPSP peers inform and request information from PPSP =
trackers and=20
  how PPSP trackers reply to the requests.</FONT><FONT face=3DVerdana =
size=3D2>=20
  </FONT><FONT face=3D"Courier New" size=3D2><BR></FONT><FONT =
face=3DVerdana=20
  size=3D2>&nbsp;</FONT><FONT face=3D"Courier New" size=3D2><BR>6. A =
=A1=B0usage document=A1=B1=20
  explaining how the protocols defined above, along with existing IETF=20
  protocols, such as RELAOD, ALTO and RTSP, can inter-operate; and how =
they may=20
  be integrated together to produce complete P2P streaming =
systems.</FONT><FONT=20
  face=3DVerdana size=3D2> </FONT><FONT face=3D"Courier New" =
size=3D2><BR></FONT><FONT=20
  face=3DVerdana size=3D2>&nbsp;</FONT><FONT face=3D"Courier New" =
size=3D2><BR><BR>The=20
  work planned for the PPSP WG is distinct from, but requires close=20
  participation with, work in other IETF WGs, particularly P2PSIP, =
ALTO,LEDBAT=20
  and MMUSIC. The PPSP WG assumes that it cannot modify baseline P2PSIP, =
ALTO,=20
  LEDBAT and MMUSIC behaviors. If PPSP determines that extensions to =
P2PSIP,=20
  ALTO,LEDBAT and MMUSIC are needed, PPSP will seek to define such =
extensions=20
  and present to the respective working groups.</FONT><FONT =
face=3DVerdana size=3D2>=20
  </FONT><FONT face=3D"Courier New" size=3D2><BR><BR>The design of PPSP =
has to=20
  consider security issues. The protocol document will contain a =
complete=20
  description of the security issues that PPSP should =
address.</FONT><FONT=20
  face=3DVerdana size=3D2> </FONT><FONT face=3D"Courier New" =
size=3D2><BR></FONT><FONT=20
  face=3DVerdana size=3D2>&nbsp;</FONT><FONT face=3D"Courier New" =
size=3D2><BR>The=20
  following topics are excluded from this WG's scope:<BR>1. Transport =
mechanisms=20
  for data transmission among PPSP peers, e.g. using TCP or UDP, unicast =
or=20
  multicast, etc. However the &nbsp;design &nbsp;of &nbsp;PPSP =
&nbsp;will=20
  &nbsp;consider how it can be combined with the transport mechanisms, =
including=20
  NAT traversal problem. The design of PPSP will also consider the =
scenario of=20
  transmission of multiple streams &nbsp;(layered &nbsp;media). =
&nbsp;This=20
  includes considering various media descriptions (e.g. data chunk =
description=20
  in peer protocol) after investigating different media coding =
mechanisms (e.g.=20
  SVC, MDC) to incorporate their features in the protocol.</FONT><FONT=20
  face=3DVerdana size=3D2> </FONT><FONT face=3D"Courier New" =
size=3D2><BR><BR>2. Network=20
  coding mechanisms in P2P streaming. Network coding may be used in P2P=20
  streaming, but its support is beyond the scope of current =
charter.</FONT><FONT=20
  face=3DVerdana size=3D2> </FONT><FONT face=3D"Courier New" =
size=3D2><BR></FONT><FONT=20
  face=3DVerdana size=3D2>&nbsp;</FONT><FONT face=3D"Courier New" =
size=3D2><BR>3.=20
  Play-out mechanisms including streaming control (e.g., pause, =
fast-forward,=20
  and rewind).</FONT><FONT face=3DVerdana size=3D2> </FONT><FONT =
face=3D"Courier New"=20
  size=3D2><BR></FONT><FONT face=3DVerdana size=3D2>&nbsp;</FONT><FONT=20
  face=3D"Courier New" size=3D2><BR>4. Algorithms that may be different =
in different=20
  deployments (e.g., chunk selection, local storage =
strategies).</FONT><FONT=20
  face=3DVerdana size=3D2> </FONT><FONT face=3D"Courier New" =
size=3D2><BR></FONT><FONT=20
  face=3DVerdana size=3D2>&nbsp;</FONT><FONT face=3D"Courier New" =
size=3D2><BR>5.=20
  Research type questions related to P2P streaming. This WG will instead =
forward=20
  such questions to the IRTF P2PRG or other RG as appropriate. Examples =
include=20
  cache management.</FONT><FONT face=3DVerdana size=3D2> </FONT><FONT=20
  face=3D"Courier New" size=3D2><B><BR>Goals and =
Milestones:</B></FONT><FONT=20
  face=3DVerdana size=3D2> </FONT>
  <P>
  <TABLE width=3D"100%" border=3D4>
    <TBODY>
    <TR vAlign=3Dtop>
      <TD width=3D"13%"><FONT face=3D"Courier New" size=3D2>Apr =
2010</FONT><FONT=20
        face=3Dsans-serif size=3D3> </FONT>
      <TD width=3D"86%"><FONT face=3D"Courier New" size=3D2>Working =
Group Last Call=20
        for problem statement</FONT><FONT face=3Dsans-serif size=3D3> =
</FONT>
    <TR vAlign=3Dtop>
      <TD><FONT face=3D"Courier New" size=3D2>Jun 2010</FONT><FONT =
face=3Dsans-serif=20
        size=3D3> </FONT>
      <TD><FONT face=3D"Courier New" size=3D2>Submit problem statement =
to IESG as=20
        Informational document</FONT><FONT face=3Dsans-serif size=3D3> =
</FONT>
    <TR vAlign=3Dtop>
      <TD><FONT face=3D"Courier New" size=3D2>Aug 2010</FONT><FONT =
face=3Dsans-serif=20
        size=3D3> </FONT>
      <TD><FONT face=3D"Courier New" size=3D2>Working Group Last Call =
for=20
        architecture survey</FONT><FONT face=3Dsans-serif size=3D3> =
</FONT>
    <TR vAlign=3Dtop>
      <TD><FONT face=3D"Courier New" size=3D2>Aug 2010</FONT><FONT =
face=3Dsans-serif=20
        size=3D3> </FONT>
      <TD><FONT face=3D"Courier New" size=3D2>Working Group Last Call =
for=20
        requirements</FONT><FONT face=3Dsans-serif size=3D3> </FONT>
    <TR vAlign=3Dtop>
      <TD><FONT face=3D"Courier New" size=3D2>Oct</FONT><FONT =
face=3Dsans-serif=20
        size=3D3> </FONT><FONT face=3D"Courier New" =
size=3D2><BR>2010</FONT><FONT=20
        face=3Dsans-serif size=3D3> </FONT>
      <TD><FONT face=3D"Courier New" size=3D2>Submit architecture survey =
to IESG=20
        as Informational document</FONT><FONT face=3Dsans-serif =
size=3D3> </FONT>
    <TR vAlign=3Dtop>
      <TD><FONT face=3D"Courier New" size=3D2>Oct 2010</FONT><FONT =
face=3Dsans-serif=20
        size=3D3> </FONT>
      <TD><FONT face=3D"Courier New" size=3D2>Submit requirements to =
IESG as=20
        Informational document</FONT><FONT face=3Dsans-serif size=3D3> =
</FONT>
    <TR vAlign=3Dtop>
      <TD><FONT face=3D"Courier New" size=3D2>Apr 2011</FONT><FONT =
face=3Dsans-serif=20
        size=3D3> </FONT>
      <TD><FONT face=3D"Courier New" size=3D2>Working Group Last Call =
for PPSP=20
        peer protocol</FONT><FONT face=3Dsans-serif size=3D3> </FONT>
    <TR vAlign=3Dtop>
      <TD><FONT face=3D"Courier New" size=3D2>Apr</FONT><FONT =
face=3Dsans-serif=20
        size=3D3> </FONT><FONT face=3D"Courier New" =
size=3D2><BR>2011</FONT><FONT=20
        face=3Dsans-serif size=3D3> </FONT>
      <TD><FONT face=3D"Courier New" size=3D2>Working Group Last Call =
for PPSP=20
        tracker protocol</FONT><FONT face=3Dsans-serif size=3D3> </FONT>
    <TR vAlign=3Dtop>
      <TD><FONT face=3D"Courier New" size=3D2>Aug 2011</FONT><FONT =
face=3Dsans-serif=20
        size=3D3> </FONT>
      <TD><FONT face=3D"Courier New" size=3D2>Submit PPSP peer protocol =
to IESG as=20
        Proposed Standard</FONT><FONT face=3Dsans-serif size=3D3> =
</FONT>
    <TR vAlign=3Dtop>
      <TD><FONT face=3D"Courier New" size=3D2>Aug 2011</FONT><FONT =
face=3Dsans-serif=20
        size=3D3> </FONT>
      <TD><FONT face=3D"Courier New" size=3D2>Submit PPSP tracker =
protocol to IESG=20
        as Proposed Standard</FONT><FONT face=3Dsans-serif size=3D3> =
</FONT>
    <TR vAlign=3Dtop>
      <TD><FONT face=3D"Courier New" size=3D2>Nov 2011</FONT><FONT =
face=3Dsans-serif=20
        size=3D3> </FONT>
      <TD><FONT face=3D"Courier New" size=3D2>Working Group Last Call of =
usage=20
        document</FONT><FONT face=3Dsans-serif size=3D3> </FONT>
    <TR vAlign=3Dtop>
      <TD><FONT face=3D"Courier New" size=3D2>Nov 2011</FONT><FONT =
face=3Dsans-serif=20
        size=3D3> </FONT>
      <TD><FONT face=3D"Courier New" size=3D2>Working Group Last Call of =
mobility=20
        BCP document</FONT><FONT face=3Dsans-serif size=3D3> </FONT>
    <TR vAlign=3Dtop>
      <TD><FONT face=3D"Courier New" size=3D2>Jan 2012</FONT><FONT =
face=3Dsans-serif=20
        size=3D3> </FONT>
      <TD><FONT face=3D"Courier New" size=3D2>Submit usage document to =
IESG as=20
        Informational document</FONT><FONT face=3Dsans-serif size=3D3> =
</FONT>
    <TR vAlign=3Dtop>
      <TD><FONT face=3D"Courier New" size=3D2>Jan 2012</FONT><FONT =
face=3Dsans-serif=20
        size=3D3> </FONT>
      <TD><FONT face=3D"Courier New" size=3D2>Submit mobility BCP =
document to IESG=20
        as Informational document</FONT><FONT face=3Dsans-serif =
size=3D3> </FONT>
    <TR vAlign=3Dtop>
      <TD><FONT face=3D"Courier New" size=3D2>Apr 2012</FONT><FONT =
face=3Dsans-serif=20
        size=3D3> </FONT>
      <TD><FONT face=3D"Courier New" size=3D2>Dissolve or re-charter=20
    </FONT></TR></TBODY></TABLE><BR><FONT face=3DVerdana =
size=3D2><BR>&nbsp;</FONT>=20
  <P>
  <HR>
  <FONT face=3DVerdana color=3D#c0c0c0 =
size=3D2><BR>zhangyunfei</FONT><FONT=20
  face=3DVerdana size=3D2> </FONT><FONT face=3DVerdana color=3D#c0c0c0=20
  size=3D2><BR>2009-12-26</FONT><FONT face=3DVerdana=20
  size=3D2>_______________________________________________<BR>ppsp =
mailing=20
  =
list<BR>ppsp@ietf.org<BR>https://www.ietf.org/mailman/listinfo/ppsp<BR><B=
R></FONT><BR><FONT=20
  face=3DVerdana=20
  =
size=3D2>--------------------------------------------------------<BR>ZTE =

  Information Security Notice: The information contained in this mail is =
solely=20
  property of the sender's organization. This mail communication is=20
  confidential. Recipients named above are obligated to maintain secrecy =
and are=20
  not permitted to disclose the contents of this communication to=20
  others.<BR>This email and any files transmitted with it are =
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  intended solely for the use of the individual or entity to whom they =
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  the individual sender.<BR>This message has been scanned for viruses =
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  by ZTE Anti-Spam =
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--=====003_Dragon247261157270_=====--


From zongning@huawei.com  Sun Dec 27 23:28:36 2009
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Date: Mon, 28 Dec 2009 15:28:04 +0800
From: Ning Zong <zongning@huawei.com>
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Subject: Re: [ppsp] =?gb2312?b?tPC4tDogUmU6ICBwcHNwIHJldmlzZWQgY2hhcnRlciBw?= =?gb2312?b?cm9wb3NhbA==?=
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IMO, we can use peer list as general terms for both tracker and peer
communications, - bearing mind that tracker and peer can both have their
local policy for sending out which peers, such as =A1=B0useful =
peers=A1=B1,
=A1=B0recommended peers=A1=B1, etc.

Anyway, I also agree that =A1=B0neighbor peers=A1=B1 is a little =
confusing.

=20

Thanks!

=20

BR,

Ning Zong

=20

  _____ =20

From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of
zhangyunfei
Sent: Monday, December 28, 2009 3:18 PM
To: liuhy @ uusee; meng.yu@zte.com.cn
Cc: ppsp@ietf.org
Subject: Re: [ppsp] =B4=F0=B8=B4: Re: ppsp revised charter proposal

=20

Thanks Harold for your clarification from UUSee's experience.

One more question:People may be confused about the "peer list" in the
tracker protocol and the "peer list"in the peer protocol since they are =
same
literally. We may express it clearer about this. Any good suggestions?

BR

Yunfei

  _____ =20

zhangyunfei

2009-12-28

  _____ =20

=B7=A2=BC=FE=C8=CB=A3=BA liuhy @ uusee

=B7=A2=CB=CD=CA=B1=BC=E4=A3=BA 2009-12-28 15:17:58

=CA=D5=BC=FE=C8=CB=A3=BA meng.yu@zte.com.cn; zhangyunfei

=B3=AD=CB=CD=A3=BA li.lichun1@zte.com.cn; ppsp@ietf.org; =
ppsp-bounces@ietf.org

=D6=F7=CC=E2=A3=BA Re: =B4=F0=B8=B4: Re: [ppsp] ppsp revised charter =
proposal

=20

Agree.

=20

"Peer list" is much clear than "neighbor peers".

=20

Actually, peers usually exchanges the list of "useful list". Since =
connected
peers either acquir resources or provide resources to each other. So, =
peers
can do some filter work locally.

=20

=20

2009-12-28=20

  _____ =20

=C1=F5=BB=B3=D3=EE /  Harold Liu
=D3=C6=CA=D3=CD=F8 CTO
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=B5=D8=D6=B7=A3=BA=B1=B1=BE=A9=CA=D0=B6=AB=B3=C7=C7=F8=B6=AB=D6=B1=C3=C5=B1=
=B1=D0=A1=BD=D6=C7=E0=C1=FA=BA=FA=CD=AC1=BA=C5=B8=E8=BB=AA=B4=F3=CF=C39=B2=
=E3
=D3=CA=B1=E0=A3=BA100007
=B5=E7=BB=B0=A3=BA+86-10-84186689
=CA=D6=BB=FA=A3=BA13901143864

=D3=CA=BC=FE=A3=BA <mailto:xuh@uusee.com> liuhy@uusee.com
=CD=F8=D6=B7=A3=BA <http://www.uusee.com/> www.uusee.com=20

=20

  _____ =20

=B7=A2=BC=FE=C8=CB=A3=BA meng.yu@zte.com.cn=20

=B7=A2=CB=CD=CA=B1=BC=E4=A3=BA 2009-12-28  14:49:35=20

=CA=D5=BC=FE=C8=CB=A3=BA zhangyunfei=20

=B3=AD=CB=CD=A3=BA li.lichun1@zte.com.cn; liuhy; ppsp@ietf.org; =
ppsp-bounces@ietf.org=20

=D6=F7=CC=E2=A3=BA =B4=F0=B8=B4: Re: [ppsp] ppsp revised charter =
proposal=20


Yes, it may arouse some problems. If PPSP want to do that, some lite
security mechanism maybe needed.=20

Besides that, should we change "exchange neighbor peers" to "exchange =
peer
lists information (owning some resource)" so as to avoid the confusion =
of
'neighbor'?=20





"zhangyunfei" <zhangyunfei@chinamobile.com>=20
=B7=A2=BC=FE=C8=CB:  ppsp-bounces@ietf.org=20

2009-12-28 14:23=20


=CA=D5=BC=FE=C8=CB

"li.lichun1@zte.com.cn" <li.lichun1@zte.com.cn>=20


=B3=AD=CB=CD

"ppsp@ietf.org" <ppsp@ietf.org>, liuhy <liuhy@uusee.com>=20


=D6=F7=CC=E2

Re: [ppsp] ppsp revised charter proposal

=20


=20

=20




Thanks Lichun.=20
According to my understanding,peers exchange the neigbor peers
information,i.e. which peer remains connected and which pieces already =
have
been downloaded. As for non-neigbor peers which it just receives from =
the
tracker, I am really not sure about the effect of such exchange because =
such
peers are un-confirmed.=20
Is there anybody who can tell us more about this point in
practice?James?Harold?Omer?=20
Thanks!=20
 =20
BR=20
Yunfei=20
 =20

  _____ =20


zhangyunfei=20
2009-12-28=20

  _____ =20


=B7=A2=BC=FE=C8=CB=A3=BA li.lichun1@zte.com.cn=20
=B7=A2=CB=CD=CA=B1=BC=E4=A3=BA 2009-12-28 11:04:21=20
=CA=D5=BC=FE=C8=CB=A3=BA zhangyunfei=20
=B3=AD=CB=CD=A3=BA ppsp@ietf.org=20
=D6=F7=CC=E2=A3=BA Re: re: [ppsp] ppsp revised charter proposal=20
 =20

The charter says "exchange neighbor peers". I think the peer list may
include peers other than neighbors. Peers can also exchange neighbors of
neighbors and non-neighbor peers known from tracker.=20


BR,=20
Lichun




"zhangyunfei" <zhangyunfei@chinamobile.com>=20

2009-12-28 10:13=20

=20


=CA=D5=BC=FE=C8=CB

"li.lichun1@zte.com.cn" <li.lichun1@zte.com.cn>=20


=B3=AD=CB=CD

"ppsp@ietf.org" <ppsp@ietf.org>=20


=D6=F7=CC=E2

Re: re: [ppsp] ppsp revised charter proposal

=20


=20

=20





Yes,you are right,Lichun.=20
As suggested in the BOF and mailing list,peer gossip(including exchange =
of
peer list)can make peers know more peers and alleviate the burden of the
tracker.=20
=20
BR=20
Yunfei=20
=20

  _____ =20


zhangyunfei=20
2009-12-28=20

  _____ =20


=B7=A2=BC=FE=C8=CB=A3=BA li.lichun1@zte.com.cn=20
=B7=A2=CB=CD=CA=B1=BC=E4=A3=BA 2009-12-28 09:36:31=20
=CA=D5=BC=FE=C8=CB=A3=BA zhangyunfei=20
=B3=AD=CB=CD=A3=BA ppsp@ietf.org; ppsp-bounces@ietf.org=20
=D6=F7=CC=E2=A3=BA re: [ppsp] ppsp revised charter proposal=20
=20

Hi, yunfei.=20
Peers can exchange peer lists, right?=20


Best regards,
Lichun Li


"zhangyunfei" <zhangyunfei@chinamobile.com>=20
=B7=A2=BC=FE=C8=CB:  ppsp-bounces@ietf.org=20

2009-12-26 16:52=20

=20


=CA=D5=BC=FE=C8=CB

"ppsp@ietf.org" <ppsp@ietf.org>=20


=B3=AD=CB=CD

=20


=D6=F7=CC=E2

[ppsp] ppsp revised charter proposal






=20

=20






Dear all,=20

   The latest version of PPSP charter is attached.Welcome to comment on
this.I guess many of you guys are enjoying the Christmas holiday.Merry =
X'mas
and happy new year!Wish to hear your valuable suggestions in the =
beginning
of 2010.:)=20

   Hope PPSP can have a great development in the new year with all of =
your
participation and contribution.=20

The main modifications are:=20

1)Para 2:=20

a)wish to make it better understood about what the tracker protocol and =
the
peer protocol differ in and reply the BOF comments that the two =
protocols
may be a single one;=20

b)Add the NAT issue raised in the BOF;=20

2)Para3:=20

a) Para3-bullet 4,adding the gossip communication in peer protocol as
discussed in the mailing list;=20

b)Para3-bullet7, deleted as suggested by Lars that optional part can be
detered until we think it clearer;=20

3)Para4, adding LEDBAT as reference raised in the BOF.=20

4)Para5,deleting privay raised in the BOF.=20

5)Para6:=20

a)bullet1:Adding the description of considering the NAT traversal and =
the
multiple stream senario as discussed in the BOF and mailing list.=20

BR=20

Yunfei=20

*************************************************************************=
=20
Description of PPSP Working Group:=20
The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is
chartered to develop standard signaling protocols (called PPSP =
protocols)
for multiple types of entities (e.g. intelligent endpoints, caches, =
content
distribution network nodes, and/or other edge devices) to participate in =
P2P
streaming systems in both fixed and mobile Internet.=20

There are two kinds of components in PPSP protocols, i.e., =
=A1=B0trackers=A1=B1 and
=A1=B0peers=A1=B1. PPSP protocols include the PPSP tracker protocol =A8C =
a signaling
protocol between =A1=B0trackers=A1=B1 and =A1=B0peers=A1=B1, and the =
PPSP peer protocol =A8C a
signaling protocol among =A1=B0peers=A1=B1. The two protocols ensure =
peers to get
streaming data within certain time constraints. PPSP tracker protocol =
deals
with the initial and periodical exchanges between tracker and peers:
initially the peers contact the tracker to report their static =
information
(like IP address, NAT types and other useful things) and get a list of =
peers
for a specific channel or streaming file from the tracker; periodically =
the
tracker maintains lists of participating peers according to the report =
from
the peers about their status information. PPSP peer protocol deals with =
the
exchanges among peers. The peer exchanges its data availability and =
neighbor
peer information with other peers. With these information, it can =
connect
with these peers for further data downloading.  =20

This WG's primary tasks are to produce:
1. A =A1=B0problem statement=A1=B1 document describing the problems, =
incentives, and
scope of developing the PPSP protocols, as well as common terminologies =
and
concepts.=20

2. A =A1=B0requirements=A1=B1 document listing the requirements on the =
designed PPSP
protocols (e.g., general functionality and performance requirements of =
PPSP
protocols or basic types of information that PPSP protocols should
communicate to facilitate P2P streaming).=20

3. An "architectural survey" document explaining the current P2P =
streaming
architectures, in particular tracker-based P2P streaming, and key issues =
in
best practice.=20

4. A proposed standard defining the PPSP peer protocol. This protocol =
will
define how PPSP peers advertise data availability and exchange neighbor
peers. The protocol will also define the requests and responses of data
chunks among PPSP peers.=20

5. A proposed standard defining the PPSP tracker protocol. This protocol
will define how PPSP peers inform and request information from PPSP =
trackers
and how PPSP trackers reply to the requests.=20

6. A =A1=B0usage document=A1=B1 explaining how the protocols defined =
above, along
with existing IETF protocols, such as RELAOD, ALTO and RTSP, can
inter-operate; and how they may be integrated together to produce =
complete
P2P streaming systems.=20


The work planned for the PPSP WG is distinct from, but requires close
participation with, work in other IETF WGs, particularly P2PSIP, =
ALTO,LEDBAT
and MMUSIC. The PPSP WG assumes that it cannot modify baseline P2PSIP, =
ALTO,
LEDBAT and MMUSIC behaviors. If PPSP determines that extensions to =
P2PSIP,
ALTO,LEDBAT and MMUSIC are needed, PPSP will seek to define such =
extensions
and present to the respective working groups.=20

The design of PPSP has to consider security issues. The protocol =
document
will contain a complete description of the security issues that PPSP =
should
address.=20

The following topics are excluded from this WG's scope:
1. Transport mechanisms for data transmission among PPSP peers, e.g. =
using
TCP or UDP, unicast or multicast, etc. However the  design  of  PPSP  =
will
consider how it can be combined with the transport mechanisms, including =
NAT
traversal problem. The design of PPSP will also consider the scenario of
transmission of multiple streams  (layered  media).  This includes
considering various media descriptions (e.g. data chunk description in =
peer
protocol) after investigating different media coding mechanisms (e.g. =
SVC,
MDC) to incorporate their features in the protocol.=20

2. Network coding mechanisms in P2P streaming. Network coding may be =
used in
P2P streaming, but its support is beyond the scope of current charter.=20

3. Play-out mechanisms including streaming control (e.g., pause,
fast-forward, and rewind).=20

4. Algorithms that may be different in different deployments (e.g., =
chunk
selection, local storage strategies).=20

5. Research type questions related to P2P streaming. This WG will =
instead
forward such questions to the IRTF P2PRG or other RG as appropriate.
Examples include cache management.=20
Goals and Milestones:=20


Apr 2010=20

Working Group Last Call for problem statement=20


Jun 2010=20

Submit problem statement to IESG as Informational document=20


Aug 2010=20

Working Group Last Call for architecture survey=20


Aug 2010=20

Working Group Last Call for requirements=20


Oct=20
2010=20

Submit architecture survey to IESG as Informational document=20


Oct 2010=20

Submit requirements to IESG as Informational document=20


Apr 2011=20

Working Group Last Call for PPSP peer protocol=20


Apr=20
2011=20

Working Group Last Call for PPSP tracker protocol=20


Aug 2011=20

Submit PPSP peer protocol to IESG as Proposed Standard=20


Aug 2011=20

Submit PPSP tracker protocol to IESG as Proposed Standard=20


Nov 2011=20

Working Group Last Call of usage document=20


Nov 2011=20

Working Group Last Call of mobility BCP document=20


Jan 2012=20

Submit usage document to IESG as Informational document=20


Jan 2012=20

Submit mobility BCP document to IESG as Informational document=20


Apr 2012=20

Dissolve or re-charter=20




 =20

  _____ =20


zhangyunfei=20
2009-12-26_______________________________________________
ppsp mailing list
ppsp@ietf.org
https://www.ietf.org/mailman/listinfo/ppsp


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solely property of the sender's organization. This mail communication is
confidential. Recipients named above are obligated to maintain secrecy =
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are not permitted to disclose the contents of this communication to =
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This email and any files transmitted with it are confidential and =
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If you have received this email in error please notify the originator of =
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<body lang=3DZH-CN link=3Dblue vlink=3Dpurple>

<div class=3DSection1>

<p class=3DMsoNormal><font size=3D1 color=3Dnavy face=3DArial><span =
lang=3DEN-US
style=3D'font-size:9.0pt;font-family:Arial;color:navy'>IMO, we can use =
peer list as
general terms for both tracker and peer communications, - bearing mind =
that
tracker and peer can both have their local policy for sending out which =
peers,
such as =A1=B0useful peers=A1=B1, =A1=B0recommended peers=A1=B1, =
etc.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D1 color=3Dnavy face=3DArial><span =
lang=3DEN-US
style=3D'font-size:9.0pt;font-family:Arial;color:navy'>Anyway, I also =
agree that =A1=B0neighbor
peers=A1=B1 is a little confusing.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D1 color=3Dnavy face=3DArial><span =
lang=3DEN-US
style=3D'font-size:9.0pt;font-family:Arial;color:navy'><o:p>&nbsp;</o:p><=
/span></font></p>

<p class=3DMsoNormal><font size=3D1 color=3Dnavy face=3DArial><span =
lang=3DEN-US
style=3D'font-size:9.0pt;font-family:Arial;color:navy'>Thanks!<o:p></o:p>=
</span></font></p>

<p class=3DMsoNormal><font size=3D1 color=3Dnavy face=3DArial><span =
lang=3DEN-US
style=3D'font-size:9.0pt;font-family:Arial;color:navy'><o:p>&nbsp;</o:p><=
/span></font></p>

<p class=3DMsoNormal><font size=3D1 color=3Dnavy face=3DArial><span =
lang=3DEN-US
style=3D'font-size:9.0pt;font-family:Arial;color:navy'>BR,<o:p></o:p></sp=
an></font></p>

<p class=3DMsoNormal><font size=3D1 color=3Dnavy face=3DArial><span =
lang=3DEN-US
style=3D'font-size:9.0pt;font-family:Arial;color:navy'>Ning =
Zong<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D1 color=3Dnavy face=3DArial><span =
lang=3DEN-US
style=3D'font-size:9.0pt;font-family:Arial;color:navy'><o:p>&nbsp;</o:p><=
/span></font></p>

<div class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><font =
size=3D3
face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'>

<hr size=3D2 width=3D"100%" align=3Dcenter tabindex=3D-1>

</span></font></div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><b><font =
size=3D2
face=3DTahoma><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Tahoma;
font-weight:bold'>From:</span></font></b><font size=3D2 =
face=3DTahoma><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:Tahoma'> =
ppsp-bounces@ietf.org
[mailto:ppsp-bounces@ietf.org] <b><span style=3D'font-weight:bold'>On =
Behalf Of </span></b>zhangyunfei<br>
<b><span style=3D'font-weight:bold'>Sent:</span></b> Monday, December =
28, 2009
3:18 PM<br>
<b><span style=3D'font-weight:bold'>To:</span></b> liuhy @ uusee;
meng.yu@zte.com.cn<br>
<b><span style=3D'font-weight:bold'>Cc:</span></b> ppsp@ietf.org<br>
<b><span style=3D'font-weight:bold'>Subject:</span></b> Re: [ppsp] =
</span></font><font
size=3D2 face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5'>=B4=F0=B8=B4</span></=
font><font
size=3D2 face=3DTahoma><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Tahoma'>:
Re: ppsp revised charter proposal</span></font><font size=3D3 =
face=3D=CB=CE=CC=E5><span
lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
face=3D"Times New Roman"><span lang=3DEN-US =
style=3D'font-size:10.5pt'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
face=3D"Times New Roman"><span lang=3DEN-US =
style=3D'font-size:10.5pt'><!--[if gte vml 1]><v:shapetype=20
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7597l10860,21600,20995,7597v485,-1037,605,-2187,485,-3377c21115,3222,2042=
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</v:shapetype><v:shape id=3D"DtsShapeName" o:spid=3D"_x0000_s2078" =
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 =
alt=3D"GE2G30DB@C@354BE@18EE013@G63@58D099&gt;888=3DABk[72207!!!!!!BIHO@]=
{72207!!!1@@51B401107DBC6C7D6Onsl`m/enu!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!=
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1!1"=20
 =
style=3D'position:absolute;margin-left:0;margin-top:0;width:.05pt;height:=
.05pt;
 z-index:1;visibility:hidden'>
 <w:anchorlock/>
</v:shape><![endif]--></span></font><font size=3D2 color=3Dblue =
face=3DVerdana><span
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana;color:blue'>Thanks
Harold for your clarification from UUSee's =
experience.</span></font><font
size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2 color=3Dblue
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana;
color:blue'>One more question:People may be confused about the =
&quot;peer
list&quot; in the tracker protocol and the &quot;peer list&quot;in the =
peer
protocol since they are same literally. We may express it clearer about =
this.
Any good suggestions?</span></font><font size=3D3 =
face=3D=CB=CE=CC=E5><span lang=3DEN-US
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2 color=3Dblue
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana;
color:blue'>BR</span></font><font size=3D3 face=3D=CB=CE=CC=E5><span =
lang=3DEN-US
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2 color=3Dblue
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana;
color:blue'>Yunfei</span></font><font size=3D3 face=3D=CB=CE=CC=E5><span =
lang=3DEN-US
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>

</div>

<div class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><font =
size=3D2
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>

<hr size=3D2 width=3D122 style=3D'width:91.5pt' align=3Dcenter>

</span></font></div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
color=3Dsilver face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:
Verdana;color:silver'>zhangyunfei</span></font><font size=3D3 =
color=3Dsilver
face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5;color:silver'><o:p></o=
:p></span></font></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><st1:chsdate
IsROCDate=3D"False" IsLunarDate=3D"False" Day=3D"28" Month=3D"12" =
Year=3D"2009" w:st=3D"on"><font
 size=3D2 color=3Dsilver face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;
 =
font-family:Verdana;color:silver'>2009-12-28</span></font></st1:chsdate><=
font
size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>

</div>

<div>

<div class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><font =
size=3D2
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>

<hr size=3D2 width=3D"100%" align=3Dcenter>

</span></font></div>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left'><strong><b><font size=3D2
face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5'>=B7=A2=BC=FE=C8=CB=A3=
=BA</span></font></b></strong><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
liuhy @ uusee</span></font><font size=3D3 face=3D=CB=CE=CC=E5><span =
lang=3DEN-US
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left'><strong><b><font size=3D2
face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5'>=B7=A2=CB=CD=CA=B1=BC=
=E4=A3=BA</span></font></b></strong><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
<st1:chsdate IsROCDate=3D"False" IsLunarDate=3D"False" Day=3D"28" =
Month=3D"12"
Year=3D"2009" =
w:st=3D"on">2009-12-28</st1:chsdate>&nbsp;15:17:58</span></font><font
size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left'><strong><b><font size=3D2
face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5'>=CA=D5=BC=FE=C8=CB=A3=
=BA</span></font></b></strong><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
meng.yu@zte.com.cn; zhangyunfei</span></font><font size=3D3 =
face=3D=CB=CE=CC=E5><span
lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left'><strong><b><font size=3D2
face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5'>=B3=AD=CB=CD=A3=BA</s=
pan></font></b></strong><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
li.lichun1@zte.com.cn; ppsp@ietf.org; =
ppsp-bounces@ietf.org</span></font><font
size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left'><strong><b><font size=3D2
face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5'>=D6=F7=CC=E2=A3=BA</s=
pan></font></b></strong><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
Re: </span></font><font size=3D2 face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;
font-family:=CB=CE=CC=E5'>=B4=F0=B8=B4</span></font><font size=3D2 =
face=3DVerdana><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:Verdana'>: Re: [ppsp] ppsp revised =
charter
proposal</span></font><font size=3D3 face=3D=CB=CE=CC=E5><span =
lang=3DEN-US style=3D'font-size:
12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></font></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D3 face=3D=CB=CE=CC=E5><span
lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'>&nbsp;<o:p></o:p></sp=
an></font></p>

</div>

<div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2 color=3Dnavy
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana;
color:navy'>Agree.</span></font><font size=3D2 face=3DVerdana><span =
lang=3DEN-US
style=3D'font-size:10.0pt;font-family:Verdana'><o:p></o:p></span></font><=
/p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>&nbsp;<o:p></o:p></span></=
font></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2 color=3Dnavy
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana;
color:navy'>&quot;Peer list&quot; is much clear than &quot;neighbor
peers&quot;.</span></font><font size=3D2 face=3DVerdana><span =
lang=3DEN-US
style=3D'font-size:10.0pt;font-family:Verdana'><o:p></o:p></span></font><=
/p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>&nbsp;<o:p></o:p></span></=
font></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2 color=3Dnavy
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana;
color:navy'>Actually, peers usually exchanges the list of &quot;useful
list&quot;. Since connected peers either acquir resources or provide =
resources
to each other. So, peers can do some filter work =
locally.</span></font><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'><o:p></o:p></span></font><=
/p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>&nbsp;<o:p></o:p></span></=
font></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>&nbsp;<o:p></o:p></span></=
font></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><st1:chsdate
IsROCDate=3D"False" IsLunarDate=3D"False" Day=3D"28" Month=3D"12" =
Year=3D"2009" w:st=3D"on"><font
 size=3D2 color=3Dsilver face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;
 =
font-family:Verdana;color:silver'>2009-12-28</span></font></st1:chsdate><=
font
size=3D2 color=3Dsilver face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;
font-family:Verdana;color:silver'> </span></font><font size=3D2 =
face=3DVerdana><span
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'><o:p></o:p></span></font><=
/p>

</div>

<div class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
color=3Dnavy face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:
Verdana;color:navy'>

<hr size=3D1 width=3D100 style=3D'width:75.0pt' noshade =
color=3D"#b5c4df" align=3Dleft>

</span></font></div>

<div>

<div>

<div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
color=3D"#a6a6a6" face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5;
color:#A6A6A6'>=C1=F5=BB=B3=D3=EE</span></font><font size=3D2 =
color=3D"#a6a6a6" face=3DArial><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:Arial;color:#A6A6A6'> =
/&nbsp;
Harold Liu<br>
</span></font><font size=3D2 color=3D"#a6a6a6" face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;
font-family:=CB=CE=CC=E5;color:#A6A6A6'>=D3=C6=CA=D3=CD=F8</span></font><=
font size=3D2 color=3D"#a6a6a6"
face=3DArial><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Arial;
color:#A6A6A6'> CTO<br>
</span></font><font size=3D2 color=3D"#a6a6a6" face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;
font-family:=CB=CE=CC=E5;color:#A6A6A6'>=B1=B1=BE=A9=D3=C6=CA=D3=BB=A5=B6=
=AF=BF=C6=BC=BC=D3=D0=CF=DE=B9=AB=CB=BE</span></font><font size=3D2
color=3D"#a6a6a6" face=3DArial><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:
Arial;color:#A6A6A6'><br>
</span></font><font size=3D2 color=3D"#a6a6a6" face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;
font-family:=CB=CE=CC=E5;color:#A6A6A6'>=B5=D8=D6=B7=A3=BA=B1=B1=BE=A9=CA=
=D0=B6=AB=B3=C7=C7=F8=B6=AB=D6=B1=C3=C5=B1=B1=D0=A1=BD=D6=C7=E0=C1=FA=BA=FA=
=CD=AC</span></font><font size=3D2
color=3D"#a6a6a6" face=3DArial><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:
Arial;color:#A6A6A6'>1</span></font><font size=3D2 color=3D"#a6a6a6" =
face=3D=CB=CE=CC=E5><span
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5;color:#A6A6A6'>=BA=C5=B8=
=E8=BB=AA=B4=F3=CF=C3</span></font><font
size=3D2 color=3D"#a6a6a6" face=3DArial><span lang=3DEN-US =
style=3D'font-size:10.0pt;
font-family:Arial;color:#A6A6A6'>9</span></font><font size=3D2 =
color=3D"#a6a6a6"
face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5;color:#A6A6A6'>=B2=E3<=
/span></font><font
size=3D2 color=3D"#a6a6a6" face=3DArial><span lang=3DEN-US =
style=3D'font-size:10.0pt;
font-family:Arial;color:#A6A6A6'><br>
</span></font><font size=3D2 color=3D"#a6a6a6" face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;
font-family:=CB=CE=CC=E5;color:#A6A6A6'>=D3=CA=B1=E0=A3=BA</span></font><=
font size=3D2 color=3D"#a6a6a6"
face=3DArial><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Arial;
color:#A6A6A6'>100007<br>
</span></font><font size=3D2 color=3D"#a6a6a6" face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;
font-family:=CB=CE=CC=E5;color:#A6A6A6'>=B5=E7=BB=B0=A3=BA</span></font><=
font size=3D2 color=3D"#a6a6a6"
face=3DArial><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Arial;
color:#A6A6A6'>+86-10-84186689<br>
</span></font><font size=3D2 color=3D"#a6a6a6" face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;
font-family:=CB=CE=CC=E5;color:#A6A6A6'>=CA=D6=BB=FA=A3=BA</span></font><=
font size=3D2 color=3D"#a6a6a6"
face=3DArial><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Arial;
color:#A6A6A6'>13901143864<u1:p></u1:p></span></font><font =
color=3Dsilver><span
lang=3DEN-US style=3D'color:silver'><o:p></o:p></span></font></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
color=3D"#a6a6a6" face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5;
color:#A6A6A6'>=D3=CA=BC=FE=A3=BA</span></font><font size=3D2 =
color=3D"#a6a6a6" face=3DArial><span
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Arial;color:#A6A6A6'><a
href=3D"mailto:xuh@uusee.com"><font color=3D"#a6a6a6"><span =
style=3D'color:#A6A6A6'>liuhy@uusee.com</span></font></a><br>
</span></font><font size=3D2 color=3D"#a6a6a6" face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;
font-family:=CB=CE=CC=E5;color:#A6A6A6'>=CD=F8=D6=B7=A3=BA</span></font><=
font size=3D2 color=3D"#a6a6a6"
face=3DArial><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Arial;
color:#A6A6A6'><a href=3D"http://www.uusee.com/"><font =
color=3D"#a6a6a6"><span
style=3D'color:#A6A6A6'>www.uusee.com</span></font></a> =
</span></font><font
color=3Dsilver><span lang=3DEN-US =
style=3D'color:silver'><u1:p></u1:p><o:p></o:p></span></font></p>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
color=3Dsilver face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:
Verdana;color:silver'>&nbsp;<o:p></o:p></span></font></p>

</div>

</div>

</div>

<div class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><font =
size=3D2
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>

<hr size=3D1 width=3D"100%" noshade color=3D"#b5c4df" align=3Dcenter>

</span></font></div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left'><strong><b><font size=3D2
face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5'>=B7=A2=BC=FE=C8=CB=A3=
=BA</span></font></b></strong><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
meng.yu@zte.com.cn <o:p></o:p></span></font></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left'><strong><b><font size=3D2
face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5'>=B7=A2=CB=CD=CA=B1=BC=
=E4=A3=BA</span></font></b></strong><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
<st1:chsdate IsROCDate=3D"False" IsLunarDate=3D"False" Day=3D"28" =
Month=3D"12"
Year=3D"2009" w:st=3D"on">2009-12-28</st1:chsdate>&nbsp; 14:49:35 =
<o:p></o:p></span></font></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left'><strong><b><font size=3D2
face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5'>=CA=D5=BC=FE=C8=CB=A3=
=BA</span></font></b></strong><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
zhangyunfei <o:p></o:p></span></font></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left'><strong><b><font size=3D2
face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5'>=B3=AD=CB=CD=A3=BA</s=
pan></font></b></strong><font
size=3D2 face=3DVerdana><span =
style=3D'font-size:10.0pt;font-family:Verdana'> <span
lang=3DEN-US>li.lichun1@zte.com.cn; liuhy; ppsp@ietf.org; =
ppsp-bounces@ietf.org <o:p></o:p></span></span></font></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left'><strong><b><font size=3D2
face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5'>=D6=F7=CC=E2=A3=BA</s=
pan></font></b></strong><font
size=3D2 face=3DVerdana><span =
style=3D'font-size:10.0pt;font-family:Verdana'> </span></font><font
size=3D2 face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5'>=B4=F0=B8=B4</span></=
font><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>:
Re: [ppsp] ppsp revised charter proposal <o:p></o:p></span></font></p>

</div>

<div>

<p class=3DMsoNormal align=3Dleft =
style=3D'margin-bottom:12.0pt;text-align:left'><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'><br>
</span></font><font size=3D2 face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:
10.0pt;font-family:sans-serif'>Yes, it may arouse some problems. If PPSP =
want
to do that, some lite security mechanism maybe =
needed.</span></font><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
<br>
<br>
</span></font><font size=3D2 face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:
10.0pt;font-family:sans-serif'>Besides that, should we change =
&quot;</span></font><font
size=3D2 face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:
"Courier New"'>exchange neighbor peers</span></font><font size=3D2
face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:sans-serif'>&quot;
to &quot;exchange peer lists information <font color=3Dsilver><span
style=3D'color:silver'>(owning some resource)</span></font>&quot; so as =
to avoid
the confusion of 'neighbor'?</span></font><font size=3D2 =
face=3DVerdana><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:Verdana'> <br>
<br>
<br>
<o:p></o:p></span></font></p>

<table class=3DMsoNormalTable border=3D0 cellpadding=3D0 width=3D"100%"
 style=3D'width:100.0%'>
 <tr>
  <td width=3D"26%" valign=3Dtop style=3D'width:26.0%;padding:.75pt =
.75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><b><font =
size=3D1
  face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:7.5pt;font-family:sans-serif;
  font-weight:bold'>&quot;zhangyunfei&quot; =
&lt;zhangyunfei@chinamobile.com&gt;</span></font></b><font
  size=3D1 face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:7.5pt;font-family:
  sans-serif'> </span></font><font size=3D3 face=3D=CB=CE=CC=E5><span =
lang=3DEN-US
  style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><br>
  </span></font><font size=3D1 face=3D=CB=CE=CC=E5><span =
style=3D'font-size:7.5pt;font-family:
  =CB=CE=CC=E5'>=B7=A2=BC=FE=C8=CB</span></font><font size=3D1 =
face=3Dsans-serif><span lang=3DEN-US
  style=3D'font-size:7.5pt;font-family:sans-serif'>: =
&nbsp;ppsp-bounces@ietf.org</span></font><font
  size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'> =
<o:p></o:p></span></font></p>
  <p><font size=3D1 face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:7.5pt;
  font-family:sans-serif'>2009-12-28 14:23</span></font><span =
lang=3DEN-US> <o:p></o:p></span></p>
  </td>
  <td width=3D"73%" valign=3Dtop style=3D'width:73.0%;padding:.75pt =
.75pt .75pt .75pt'>
  <table class=3DMsoNormalTable border=3D0 cellpadding=3D0 =
width=3D"100%"
   style=3D'width:100.0%'>
   <tr>
    <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
    <p class=3DMsoNormal align=3Dright style=3D'text-align:right'><font =
size=3D1
    face=3D=CB=CE=CC=E5><span =
style=3D'font-size:7.5pt;font-family:=CB=CE=CC=E5'>=CA=D5=BC=FE=C8=CB</sp=
an></font><font
    size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
    </td>
    <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
    <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D1
    face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:7.5pt;font-family:sans-serif'>&quot;li.lichun1@zte.com=
.cn&quot;
    &lt;li.lichun1@zte.com.cn&gt;</span></font><font size=3D3 =
face=3D=CB=CE=CC=E5><span
    lang=3DEN-US style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'> =
<o:p></o:p></span></font></p>
    </td>
   </tr>
   <tr>
    <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
    <p class=3DMsoNormal align=3Dright style=3D'text-align:right'><font =
size=3D1
    face=3D=CB=CE=CC=E5><span =
style=3D'font-size:7.5pt;font-family:=CB=CE=CC=E5'>=B3=AD=CB=CD</span></f=
ont><font
    size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
    </td>
    <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
    <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D1
    face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:7.5pt;font-family:sans-serif'>&quot;ppsp@ietf.org&quot=
;
    &lt;ppsp@ietf.org&gt;, liuhy =
&lt;liuhy@uusee.com&gt;</span></font><font
    size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'> =
<o:p></o:p></span></font></p>
    </td>
   </tr>
   <tr>
    <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
    <p class=3DMsoNormal align=3Dright style=3D'text-align:right'><font =
size=3D1
    face=3D=CB=CE=CC=E5><span =
style=3D'font-size:7.5pt;font-family:=CB=CE=CC=E5'>=D6=F7=CC=E2</span></f=
ont><font
    size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
    </td>
    <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
    <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D1
    face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:7.5pt;font-family:sans-serif'>Re:
    [ppsp] ppsp revised charter proposal</span></font><font size=3D3 =
face=3D=CB=CE=CC=E5><span
    lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
    </td>
   </tr>
  </table>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D3 face=3D=CB=CE=CC=E5><span
  lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p>&nbsp;</o:p></sp=
an></font></p>
  <table class=3DMsoNormalTable border=3D0 cellpadding=3D0>
   <tr>
    <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
    <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D3 face=3D=CB=CE=CC=E5><span
    lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p>&nbsp;</o:p></sp=
an></font></p>
    </td>
    <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
    <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D3 face=3D=CB=CE=CC=E5><span
    lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p>&nbsp;</o:p></sp=
an></font></p>
    </td>
   </tr>
  </table>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D3 face=3D=CB=CE=CC=E5><span
  lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
  </td>
 </tr>
</table>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'><br>
<br>
<br>
<font color=3Dblue><span style=3D'color:blue'>Thanks =
Lichun.</span></font> <br>
<font color=3Dblue><span style=3D'color:blue'>According to my =
understanding,peers
exchange the neigbor peers information,i.e. which peer remains connected =
and
which pieces already have been downloaded. As for non-neigbor peers =
which it
just receives from the tracker, I am really not sure about the effect of =
such
exchange because such peers are un-confirmed.</span></font> <br>
<font color=3Dblue><span style=3D'color:blue'>Is there anybody who can =
tell us more
about this point in practice?James?Harold?Omer?</span></font> <br>
<font color=3Dblue><span style=3D'color:blue'>Thanks!</span></font> <br>
</span></font><font size=3D3 face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:
12.0pt;font-family:sans-serif'>&nbsp;</span></font><font size=3D2 =
face=3DVerdana><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:Verdana'> <br>
<font color=3Dblue><span style=3D'color:blue'>BR</span></font> <br>
<font color=3Dblue><span style=3D'color:blue'>Yunfei</span></font> <br>
</span></font><font size=3D3 face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:
12.0pt;font-family:sans-serif'>&nbsp;</span></font><font size=3D2 =
face=3DVerdana><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:Verdana'> =
<o:p></o:p></span></font></p>

<div class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><font =
size=3D2
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>

<hr size=3D2 width=3D"100%" align=3Dcenter>

</span></font></div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'><br>
<font color=3Dsilver><span =
style=3D'color:silver'>zhangyunfei</span></font> <br>
<st1:chsdate IsROCDate=3D"False" IsLunarDate=3D"False" Day=3D"28" =
Month=3D"12"
Year=3D"2009" w:st=3D"on"><font color=3Dsilver><span =
style=3D'color:silver'>2009-12-28</span></font></st1:chsdate>
<o:p></o:p></span></font></p>

<div class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><font =
size=3D2
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>

<hr size=3D2 width=3D"100%" align=3Dcenter>

</span></font></div>

<p class=3DMsoNormal align=3Dleft =
style=3D'margin-bottom:12.0pt;text-align:left'><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'><br>
</span></font><b><font size=3D2 face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;font-family:
=CB=CE=CC=E5;font-weight:bold'>=B7=A2=BC=FE=C8=CB=A3=BA</span></font></b>=
<font size=3D2 face=3DVerdana><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:Verdana'> =
li.lichun1@zte.com.cn <br>
</span></font><b><font size=3D2 face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;font-family:
=CB=CE=CC=E5;font-weight:bold'>=B7=A2=CB=CD=CA=B1=BC=E4=A3=BA</span></fon=
t></b><font size=3D2 face=3DVerdana><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:Verdana'> 2009-12-28 =
11:04:21 <br>
</span></font><b><font size=3D2 face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;font-family:
=CB=CE=CC=E5;font-weight:bold'>=CA=D5=BC=FE=C8=CB=A3=BA</span></font></b>=
<font size=3D2 face=3DVerdana><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:Verdana'> zhangyunfei =
<br>
</span></font><b><font size=3D2 face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;font-family:
=CB=CE=CC=E5;font-weight:bold'>=B3=AD=CB=CD=A3=BA</span></font></b><font =
size=3D2 face=3DVerdana><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:Verdana'> =
ppsp@ietf.org <br>
</span></font><b><font size=3D2 face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;font-family:
=CB=CE=CC=E5;font-weight:bold'>=D6=F7=CC=E2=A3=BA</span></font></b><font =
size=3D2 face=3DVerdana><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:Verdana'> Re: re: =
[ppsp] ppsp
revised charter proposal <br>
</span></font><font size=3D3 face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:
12.0pt;font-family:sans-serif'>&nbsp;</span></font><font size=3D2 =
face=3DVerdana><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:Verdana'> <br>
</span></font><font size=3D2 face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:
10.0pt;font-family:sans-serif'><br>
The charter says &quot;</span></font><font size=3D2 face=3D"Courier =
New"><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:"Courier =
New"'>exchange neighbor
peers</span></font><font size=3D2 face=3Dsans-serif><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:sans-serif'>&quot;. I think the =
peer list
may include peers other than neighbors. Peers can also exchange =
neighbors of
neighbors and non-neighbor peers known from tracker. <br>
<br>
<br>
BR,</span></font><font size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:
10.0pt;font-family:Verdana'> </span></font><font size=3D2 =
face=3Dsans-serif><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:sans-serif'><br>
Lichun</span></font><font size=3D2 face=3DVerdana><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:Verdana'><br>
<br>
<o:p></o:p></span></font></p>

<table class=3DMsoNormalTable border=3D0 cellpadding=3D0 width=3D"100%"
 style=3D'width:100.0%'>
 <tr>
  <td width=3D"48%" valign=3Dtop style=3D'width:48.0%;padding:.75pt =
.75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><b><font =
size=3D1
  face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:7.5pt;font-family:sans-serif;
  font-weight:bold'>&quot;zhangyunfei&quot; =
&lt;zhangyunfei@chinamobile.com&gt;</span></font></b><font
  size=3D1 face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:7.5pt;font-family:
  sans-serif'> </span></font><font size=3D3 face=3D=CB=CE=CC=E5><span =
lang=3DEN-US
  =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
  <p><font size=3D1 face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:7.5pt;
  font-family:sans-serif'>2009-12-28 10:13</span></font><font =
face=3Dsans-serif><span
  lang=3DEN-US style=3D'font-family:sans-serif'> </span></font><span =
lang=3DEN-US><o:p></o:p></span></p>
  </td>
  <td width=3D"51%" valign=3Dtop style=3D'width:51.0%;padding:.75pt =
.75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D3 face=3D=CB=CE=CC=E5><span
  lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p>&nbsp;</o:p></sp=
an></font></p>
  <table class=3DMsoNormalTable border=3D0 cellpadding=3D0 =
width=3D"100%"
   style=3D'width:100.0%'>
   <tr>
    <td width=3D"12%" valign=3Dtop style=3D'width:12.0%;padding:.75pt =
.75pt .75pt .75pt'>
    <p class=3DMsoNormal align=3Dright style=3D'text-align:right'><font =
size=3D1
    face=3D=CB=CE=CC=E5><span =
style=3D'font-size:7.5pt;font-family:=CB=CE=CC=E5'>=CA=D5=BC=FE=C8=CB</sp=
an></font><font
    size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
    </td>
    <td width=3D"87%" valign=3Dtop style=3D'width:87.0%;padding:.75pt =
.75pt .75pt .75pt'>
    <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D1
    face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:7.5pt;font-family:sans-serif'>&quot;li.lichun1@zte.com=
.cn&quot;
    &lt;li.lichun1@zte.com.cn&gt;</span></font><font size=3D3 =
face=3Dsans-serif><span
    lang=3DEN-US style=3D'font-size:12.0pt;font-family:sans-serif'> =
</span></font><font
    size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
    </td>
   </tr>
   <tr>
    <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
    <p class=3DMsoNormal align=3Dright style=3D'text-align:right'><font =
size=3D1
    face=3D=CB=CE=CC=E5><span =
style=3D'font-size:7.5pt;font-family:=CB=CE=CC=E5'>=B3=AD=CB=CD</span></f=
ont><font
    size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
    </td>
    <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
    <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D1
    face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:7.5pt;font-family:sans-serif'>&quot;ppsp@ietf.org&quot=
;
    &lt;ppsp@ietf.org&gt;</span></font><font size=3D3 =
face=3Dsans-serif><span
    lang=3DEN-US style=3D'font-size:12.0pt;font-family:sans-serif'> =
</span></font><font
    size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
    </td>
   </tr>
   <tr>
    <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
    <p class=3DMsoNormal align=3Dright style=3D'text-align:right'><font =
size=3D1
    face=3D=CB=CE=CC=E5><span =
style=3D'font-size:7.5pt;font-family:=CB=CE=CC=E5'>=D6=F7=CC=E2</span></f=
ont><font
    size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
    </td>
    <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
    <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D1
    face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:7.5pt;font-family:sans-serif'>Re:
    re: [ppsp] ppsp revised charter proposal</span></font><font size=3D3 =
face=3D=CB=CE=CC=E5><span
    lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
    </td>
   </tr>
  </table>
  <p class=3DMsoNormal align=3Dleft =
style=3D'margin-bottom:12.0pt;text-align:left'><font
  size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p>&nbsp;</o:p></sp=
an></font></p>
  <table class=3DMsoNormalTable border=3D0 cellpadding=3D0 =
width=3D"100%"
   style=3D'width:100.0%'>
   <tr>
    <td width=3D"49%" valign=3Dtop style=3D'width:49.0%;padding:.75pt =
.75pt .75pt .75pt'>
    <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D3 face=3D=CB=CE=CC=E5><span
    lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p>&nbsp;</o:p></sp=
an></font></p>
    </td>
    <td width=3D"50%" valign=3Dtop style=3D'width:50.0%;padding:.75pt =
.75pt .75pt .75pt'>
    <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D3 face=3D=CB=CE=CC=E5><span
    lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p>&nbsp;</o:p></sp=
an></font></p>
    </td>
   </tr>
  </table>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D3 face=3D=CB=CE=CC=E5><span
  lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
  </td>
 </tr>
</table>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'><br>
<br>
<br>
<font color=3Dblue><span style=3D'color:blue'><br>
Yes,you are right,Lichun. <br>
As suggested in the BOF and mailing list,peer gossip(including exchange =
of peer
list)can make peers know more peers and alleviate the burden of the =
tracker.</span></font>
</span></font><font size=3D3 face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:
12.0pt;font-family:sans-serif'><br>
</span></font><font size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;
font-family:Verdana'>&nbsp;<font color=3Dblue><span =
style=3D'color:blue'><br>
BR</span></font> <font color=3Dblue><span style=3D'color:blue'><br>
Yunfei</span></font> </span></font><font size=3D3 =
face=3Dsans-serif><span
lang=3DEN-US style=3D'font-size:12.0pt;font-family:sans-serif'><br>
</span></font><font size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;
font-family:Verdana'>&nbsp;<o:p></o:p></span></font></p>

<div class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><font =
size=3D2
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>

<hr size=3D2 width=3D"100%" align=3Dcenter>

</span></font></div>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
color=3Dsilver face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:
Verdana;color:silver'><br>
zhangyunfei</span></font><font size=3D2 face=3DVerdana><span =
lang=3DEN-US
style=3D'font-size:10.0pt;font-family:Verdana'> <font =
color=3Dsilver><span
style=3D'color:silver'><br>
<st1:chsdate IsROCDate=3D"False" IsLunarDate=3D"False" Day=3D"28" =
Month=3D"12"
Year=3D"2009" w:st=3D"on">2009-12-28</st1:chsdate></span></font> =
<o:p></o:p></span></font></p>

<div class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><font =
size=3D2
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>

<hr size=3D2 width=3D"100%" align=3Dcenter>

</span></font></div>

<p class=3DMsoNormal align=3Dleft =
style=3D'margin-bottom:12.0pt;text-align:left'><b><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana;
font-weight:bold'><br>
</span></font></b><b><font size=3D2 face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;
font-family:=CB=CE=CC=E5;font-weight:bold'>=B7=A2=BC=FE=C8=CB=A3=BA</span=
></font></b><font size=3D2
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
li.lichun1@zte.com.cn <b><span style=3D'font-weight:bold'><br>
</span></b></span></font><b><font size=3D2 face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;
font-family:=CB=CE=CC=E5;font-weight:bold'>=B7=A2=CB=CD=CA=B1=BC=E4=A3=BA=
</span></font></b><font size=3D2
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
2009-12-28 09:36:31 <b><span style=3D'font-weight:bold'><br>
</span></b></span></font><b><font size=3D2 face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;
font-family:=CB=CE=CC=E5;font-weight:bold'>=CA=D5=BC=FE=C8=CB=A3=BA</span=
></font></b><font size=3D2
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
zhangyunfei <b><span style=3D'font-weight:bold'><br>
</span></b></span></font><b><font size=3D2 face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;
font-family:=CB=CE=CC=E5;font-weight:bold'>=B3=AD=CB=CD=A3=BA</span></fon=
t></b><font size=3D2
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
ppsp@ietf.org; ppsp-bounces@ietf.org <b><span =
style=3D'font-weight:bold'><br>
</span></b></span></font><b><font size=3D2 face=3D=CB=CE=CC=E5><span =
style=3D'font-size:10.0pt;
font-family:=CB=CE=CC=E5;font-weight:bold'>=D6=F7=CC=E2=A3=BA</span></fon=
t></b><font size=3D2
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'> re:
[ppsp] ppsp revised charter proposal </span></font><font size=3D3
face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:sans-serif'><br>
</span></font><font size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;
font-family:Verdana'>&nbsp;</span></font><font size=3D2 =
face=3Dsans-serif><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:sans-serif'><br>
<br>
Hi, yunfei.</span></font><font size=3D2 face=3DVerdana><span =
lang=3DEN-US
style=3D'font-size:10.0pt;font-family:Verdana'> </span></font><font =
size=3D2
face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:sans-serif'><br>
Peers can exchange peer lists, right?</span></font><font size=3D2 =
face=3DVerdana><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:Verdana'> =
</span></font><font
size=3D2 face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:
sans-serif'><br>
<br>
<br>
Best regards,<br>
Lichun Li</span></font><font size=3D2 face=3DVerdana><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:Verdana'><o:p></o:p></span></font><=
/p>

<table class=3DMsoNormalTable border=3D0 cellpadding=3D0 width=3D"100%"
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  <td width=3D"54%" valign=3Dtop style=3D'width:54.0%;padding:.75pt =
.75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><b><font =
size=3D1
  face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:7.5pt;font-family:sans-serif;
  font-weight:bold'>&quot;zhangyunfei&quot; =
&lt;zhangyunfei@chinamobile.com&gt;</span></font></b><font
  size=3D1 face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:7.5pt;font-family:
  sans-serif'> <br>
  </span></font><font size=3D1 face=3D=CB=CE=CC=E5><span =
style=3D'font-size:7.5pt;font-family:
  =CB=CE=CC=E5'>=B7=A2=BC=FE=C8=CB</span></font><font size=3D1 =
face=3Dsans-serif><span lang=3DEN-US
  style=3D'font-size:7.5pt;font-family:sans-serif'>: =
&nbsp;ppsp-bounces@ietf.org</span></font><font
  size=3D3 face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:
  sans-serif'> </span></font><font size=3D3 face=3D=CB=CE=CC=E5><span =
lang=3DEN-US
  =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
  <p><font size=3D1 face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:7.5pt;
  font-family:sans-serif'>2009-12-26 16:52</span></font><font =
face=3Dsans-serif><span
  lang=3DEN-US style=3D'font-family:sans-serif'> </span></font><span =
lang=3DEN-US><o:p></o:p></span></p>
  </td>
  <td width=3D"45%" valign=3Dtop style=3D'width:45.0%;padding:.75pt =
.75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D3 face=3D=CB=CE=CC=E5><span
  lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p>&nbsp;</o:p></sp=
an></font></p>
  <table class=3DMsoNormalTable border=3D0 cellpadding=3D0 =
width=3D"100%"
   style=3D'width:100.0%'>
   <tr>
    <td width=3D"14%" valign=3Dtop style=3D'width:14.0%;padding:.75pt =
.75pt .75pt .75pt'>
    <p class=3DMsoNormal align=3Dright style=3D'text-align:right'><font =
size=3D1
    face=3D=CB=CE=CC=E5><span =
style=3D'font-size:7.5pt;font-family:=CB=CE=CC=E5'>=CA=D5=BC=FE=C8=CB</sp=
an></font><font
    size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
    </td>
    <td width=3D"85%" valign=3Dtop style=3D'width:85.0%;padding:.75pt =
.75pt .75pt .75pt'>
    <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D1
    face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:7.5pt;font-family:sans-serif'>&quot;ppsp@ietf.org&quot=
;
    &lt;ppsp@ietf.org&gt;</span></font><font size=3D3 =
face=3Dsans-serif><span
    lang=3DEN-US style=3D'font-size:12.0pt;font-family:sans-serif'> =
</span></font><font
    size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
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    <p class=3DMsoNormal align=3Dright style=3D'text-align:right'><font =
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    face=3D=CB=CE=CC=E5><span =
style=3D'font-size:7.5pt;font-family:=CB=CE=CC=E5'>=B3=AD=CB=CD</span></f=
ont><font
    size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
    </td>
    <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
    <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D3 face=3D=CB=CE=CC=E5><span
    lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p>&nbsp;</o:p></sp=
an></font></p>
    </td>
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    <p class=3DMsoNormal align=3Dright style=3D'text-align:right'><font =
size=3D1
    face=3D=CB=CE=CC=E5><span =
style=3D'font-size:7.5pt;font-family:=CB=CE=CC=E5'>=D6=F7=CC=E2</span></f=
ont><font
    size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
    </td>
    <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
    <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D1
    face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:7.5pt;font-family:sans-serif'>[ppsp]
    ppsp revised charter proposal</span></font><font size=3D3 =
face=3D=CB=CE=CC=E5><span
    lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
    </td>
   </tr>
  </table>
  <p class=3DMsoNormal align=3Dleft =
style=3D'margin-bottom:12.0pt;text-align:left'><font
  size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><br>
  <br>
  <o:p></o:p></span></font></p>
  <table class=3DMsoNormalTable border=3D0 cellpadding=3D0 =
width=3D"100%"
   style=3D'width:100.0%'>
   <tr>
    <td width=3D"49%" valign=3Dtop style=3D'width:49.0%;padding:.75pt =
.75pt .75pt .75pt'>
    <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D3 face=3D=CB=CE=CC=E5><span
    lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p>&nbsp;</o:p></sp=
an></font></p>
    </td>
    <td width=3D"50%" valign=3Dtop style=3D'width:50.0%;padding:.75pt =
.75pt .75pt .75pt'>
    <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D3 face=3D=CB=CE=CC=E5><span
    lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p>&nbsp;</o:p></sp=
an></font></p>
    </td>
   </tr>
  </table>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D3 face=3D=CB=CE=CC=E5><span
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ont></p>
  </td>
 </tr>
</table>

<p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'><br>
<br>
<br>
</span></font><font size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;
font-family:=CB=CE=CC=E5'><br>
</span></font><font size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;
font-family:Verdana'><br>
Dear all, <o:p></o:p></span></font></p>

<p><font size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;
font-family:Verdana'>&nbsp; &nbsp;The latest version of PPSP charter is
attached.Welcome to comment on this.I guess many of you guys are =
enjoying the
Christmas holiday.Merry X'mas and happy new year!Wish to hear your =
valuable
suggestions in the beginning of 2010.:) <o:p></o:p></span></font></p>

<p><font size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;
font-family:Verdana'>&nbsp; &nbsp;Hope PPSP can have a great development =
in the
new year with all of your participation and contribution. =
<o:p></o:p></span></font></p>

<p><font size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;
font-family:Verdana'>The main modifications are: =
<o:p></o:p></span></font></p>

<p><font size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;
font-family:Verdana'>1)<st1:place w:st=3D"on">Para</st1:place> 2: =
<o:p></o:p></span></font></p>

<p><font size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;
font-family:Verdana'>a)wish to make it better understood about what the =
tracker
protocol and the peer protocol differ in and reply the BOF comments that =
the
two protocols may be a single one; <o:p></o:p></span></font></p>

<p><font size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;
font-family:Verdana'>b)Add the NAT issue raised in the BOF; =
<o:p></o:p></span></font></p>

<p><font size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;
font-family:Verdana'>2)Para3: <o:p></o:p></span></font></p>

<p><font size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;
font-family:Verdana'>a) Para3-</span></font><font size=3D2 =
face=3DArial><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:Arial'>bullet =
4,adding the
gossip communication in peer protocol as discussed in the mailing =
list;</span></font><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
<o:p></o:p></span></font></p>

<p><font size=3D2 face=3DArial><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:
Arial'>b)Para3-bullet7, deleted as suggested by Lars that optional part =
can be
detered until we think it clearer;</span></font><font size=3D2 =
face=3DVerdana><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:Verdana'> =
<o:p></o:p></span></font></p>

<p><font size=3D2 face=3DArial><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:
Arial'>3)Para4, adding LEDBAT as reference raised in the =
BOF.</span></font><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
<o:p></o:p></span></font></p>

<p><font size=3D2 face=3DArial><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:
Arial'>4)Para5,deleting privay raised in the BOF.</span></font><font =
size=3D2
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'> =
<o:p></o:p></span></font></p>

<p><font size=3D2 face=3DArial><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:
Arial'>5)Para6:</span></font><font size=3D2 face=3DVerdana><span =
lang=3DEN-US
style=3D'font-size:10.0pt;font-family:Verdana'> =
<o:p></o:p></span></font></p>

<p><font size=3D2 face=3DArial><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:
Arial'>a)bullet1:Adding the description of considering the NAT traversal =
and
the multiple stream senario as discussed in the BOF and mailing =
list.</span></font><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
<o:p></o:p></span></font></p>

<p><font size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;
font-family:Verdana'>BR <o:p></o:p></span></font></p>

<p><font size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;
font-family:Verdana'>Yunfei <o:p></o:p></span></font></p>

<p><font size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;
font-family:Verdana'>****************************************************=
*********************
</span></font><b><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:"Courier =
New";font-weight:bold'><br>
Description of PPSP Working Group:</span></font></b><font size=3D2 =
face=3DVerdana><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:Verdana'> =
</span></font><font
size=3D2 face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:
"Courier New"'><br>
The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is =
chartered
to develop standard signaling protocols (called PPSP protocols) for =
multiple
types of entities (e.g. intelligent endpoints, caches, content =
distribution
network nodes, and/or other edge devices) to participate in P2P =
streaming
systems in both fixed and mobile Internet.</span></font><font size=3D2
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'> </span></font><font
size=3D2 face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:
"Courier New"'><br>
<br>
There are two kinds of components in PPSP protocols, i.e., =
=A1=B0trackers=A1=B1 and
=A1=B0peers=A1=B1. PPSP protocols include the PPSP tracker protocol =A8C =
a signaling
protocol between =A1=B0trackers=A1=B1 and =A1=B0peers=A1=B1, and the =
PPSP peer protocol =A8C a
signaling protocol among =A1=B0peers=A1=B1. The two protocols ensure =
peers to get
streaming data within certain time constraints. PPSP tracker protocol =
deals
with the initial and periodical exchanges between tracker and peers: =
initially
the peers contact the tracker to report their static information (like =
IP
address, NAT types and other useful things) and get a list of peers for =
a
specific channel or streaming file from the tracker; periodically the =
tracker
maintains lists of participating peers according to the report from the =
peers
about their status information. PPSP peer protocol deals with the =
exchanges
among peers. The peer exchanges its data availability and neighbor peer
information with other peers. With these information, it can connect =
with these
peers for further data downloading. &nbsp;</span></font><font size=3D2
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'> <br>
</span></font><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:"Courier New"'><br>
This WG's primary tasks are to produce:<br>
1. A =A1=B0problem statement=A1=B1 document describing the problems, =
incentives, and
scope of developing the PPSP protocols, as well as common terminologies =
and
concepts.</span></font><font size=3D2 face=3DVerdana><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:Verdana'> <br>
</span></font><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:"Courier New"'><br>
2. A =A1=B0requirements=A1=B1 document listing the requirements on the =
designed PPSP
protocols (e.g., general functionality and performance requirements of =
PPSP
protocols or basic types of information that PPSP protocols should =
communicate
to facilitate P2P streaming).</span></font><font size=3D2 =
face=3DVerdana><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:Verdana'> =
</span></font><font
size=3D2 face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:
"Courier New"'><br>
<br>
3. An &quot;architectural survey&quot; document explaining the current =
P2P
streaming architectures, in particular tracker-based P2P streaming, and =
key
issues in best practice.</span></font><font size=3D2 =
face=3DVerdana><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:Verdana'> =
</span></font><font
size=3D2 face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:
"Courier New"'><br>
<br>
4. A proposed standard defining the PPSP peer protocol. This protocol =
will
define how PPSP peers advertise data availability and exchange neighbor =
peers.
The protocol will also define the requests and responses of data chunks =
among
PPSP peers.</span></font><font size=3D2 face=3DVerdana><span =
lang=3DEN-US
style=3D'font-size:10.0pt;font-family:Verdana'> <br>
</span></font><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:"Courier New"'><br>
5. A proposed standard defining the PPSP tracker protocol. This protocol =
will
define how PPSP peers inform and request information from PPSP trackers =
and how
PPSP trackers reply to the requests.</span></font><font size=3D2 =
face=3DVerdana><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:Verdana'> <br>
</span></font><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:"Courier New"'><br>
6. A =A1=B0usage document=A1=B1 explaining how the protocols defined =
above, along with
existing IETF protocols, such as RELAOD, ALTO and RTSP, can =
inter-operate; and
how they may be integrated together to produce complete P2P streaming =
systems.</span></font><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
<br>
</span></font><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:"Courier New"'><br>
<br>
The work planned for the PPSP WG is distinct from, but requires close
participation with, work in other IETF WGs, particularly P2PSIP, =
ALTO,LEDBAT
and MMUSIC. The PPSP WG assumes that it cannot modify baseline P2PSIP, =
ALTO,
LEDBAT and MMUSIC behaviors. If PPSP determines that extensions to =
P2PSIP,
ALTO,LEDBAT and MMUSIC are needed, PPSP will seek to define such =
extensions and
present to the respective working groups.</span></font><font size=3D2
face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'> </span></font><font
size=3D2 face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:
"Courier New"'><br>
<br>
The design of PPSP has to consider security issues. The protocol =
document will
contain a complete description of the security issues that PPSP should =
address.</span></font><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
<br>
</span></font><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:"Courier New"'><br>
The following topics are excluded from this WG's scope:<br>
1. Transport mechanisms for data transmission among PPSP peers, e.g. =
using TCP
or UDP, unicast or multicast, etc. However the &nbsp;design &nbsp;of =
&nbsp;PPSP
&nbsp;will &nbsp;consider how it can be combined with the transport =
mechanisms,
including NAT traversal problem. The design of PPSP will also consider =
the
scenario of transmission of multiple streams &nbsp;(layered =
&nbsp;media).
&nbsp;This includes considering various media descriptions (e.g. data =
chunk
description in peer protocol) after investigating different media coding
mechanisms (e.g. SVC, MDC) to incorporate their features in the =
protocol.</span></font><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
</span></font><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:"Courier New"'><br>
<br>
2. Network coding mechanisms in P2P streaming. Network coding may be =
used in
P2P streaming, but its support is beyond the scope of current =
charter.</span></font><font
size=3D2 face=3DVerdana><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Verdana'>
<br>
</span></font><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:"Courier New"'><br>
3. Play-out mechanisms including streaming control (e.g., pause, =
fast-forward,
and rewind).</span></font><font size=3D2 face=3DVerdana><span =
lang=3DEN-US
style=3D'font-size:10.0pt;font-family:Verdana'> <br>
</span></font><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:"Courier New"'><br>
4. Algorithms that may be different in different deployments (e.g., =
chunk
selection, local storage strategies).</span></font><font size=3D2 =
face=3DVerdana><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:Verdana'> <br>
</span></font><font size=3D2 face=3D"Courier New"><span lang=3DEN-US
style=3D'font-size:10.0pt;font-family:"Courier New"'><br>
5. Research type questions related to P2P streaming. This WG will =
instead
forward such questions to the IRTF P2PRG or other RG as appropriate. =
Examples
include cache management.</span></font><font size=3D2 =
face=3DVerdana><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:Verdana'> =
</span></font><b><font
size=3D2 face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:
"Courier New";font-weight:bold'><br>
Goals and Milestones:</span></font></b><font size=3D2 =
face=3DVerdana><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:Verdana'> =
<o:p></o:p></span></font></p>

<table class=3DMsoNormalTable border=3D1 cellpadding=3D0 width=3D"100%"
 style=3D'width:100.0%;border:outset 3.0pt'>
 <tr>
  <td width=3D"13%" valign=3Dtop style=3D'width:13.0%;padding:.75pt =
.75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Apr
  2010</span></font><font size=3D3 face=3Dsans-serif><span lang=3DEN-US
  style=3D'font-size:12.0pt;font-family:sans-serif'> </span></font><font =
size=3D3
  face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
  </td>
  <td width=3D"86%" valign=3Dtop style=3D'width:86.0%;padding:.75pt =
.75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Working
  Group Last Call for problem statement</span></font><font size=3D3
  face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:sans-serif'>
  </span></font><font size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;
  font-family:=CB=CE=CC=E5'><o:p></o:p></span></font></p>
  </td>
 </tr>
 <tr>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Jun
  2010</span></font><font size=3D3 face=3Dsans-serif><span lang=3DEN-US
  style=3D'font-size:12.0pt;font-family:sans-serif'> </span></font><font =
size=3D3
  face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
  </td>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Submit
  problem statement to IESG as Informational document</span></font><font
  size=3D3 face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:
  sans-serif'> </span></font><font size=3D3 face=3D=CB=CE=CC=E5><span =
lang=3DEN-US
  =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
  </td>
 </tr>
 <tr>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Aug
  2010</span></font><font size=3D3 face=3Dsans-serif><span lang=3DEN-US
  style=3D'font-size:12.0pt;font-family:sans-serif'> </span></font><font =
size=3D3
  face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
  </td>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Working
  Group Last Call for architecture survey</span></font><font size=3D3
  face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:sans-serif'>
  </span></font><font size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;
  font-family:=CB=CE=CC=E5'><o:p></o:p></span></font></p>
  </td>
 </tr>
 <tr>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Aug
  2010</span></font><font size=3D3 face=3Dsans-serif><span lang=3DEN-US
  style=3D'font-size:12.0pt;font-family:sans-serif'> </span></font><font =
size=3D3
  face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
  </td>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Working
  Group Last Call for requirements</span></font><font size=3D3 =
face=3Dsans-serif><span
  lang=3DEN-US style=3D'font-size:12.0pt;font-family:sans-serif'> =
</span></font><font
  size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
  </td>
 </tr>
 <tr>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier =
New"'>Oct</span></font><font
  size=3D3 face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:
  sans-serif'> </span></font><font size=3D2 face=3D"Courier New"><span =
lang=3DEN-US
  style=3D'font-size:10.0pt;font-family:"Courier New"'><br>
  2010</span></font><font size=3D3 face=3Dsans-serif><span lang=3DEN-US
  style=3D'font-size:12.0pt;font-family:sans-serif'> </span></font><font =
size=3D3
  face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
  </td>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Submit
  architecture survey to IESG as Informational =
document</span></font><font
  size=3D3 face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:
  sans-serif'> </span></font><font size=3D3 face=3D=CB=CE=CC=E5><span =
lang=3DEN-US
  =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
  </td>
 </tr>
 <tr>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Oct
  2010</span></font><font size=3D3 face=3Dsans-serif><span lang=3DEN-US
  style=3D'font-size:12.0pt;font-family:sans-serif'> </span></font><font =
size=3D3
  face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
  </td>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Submit
  requirements to IESG as Informational document</span></font><font =
size=3D3
  face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:sans-serif'>
  </span></font><font size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;
  font-family:=CB=CE=CC=E5'><o:p></o:p></span></font></p>
  </td>
 </tr>
 <tr>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Apr
  2011</span></font><font size=3D3 face=3Dsans-serif><span lang=3DEN-US
  style=3D'font-size:12.0pt;font-family:sans-serif'> </span></font><font =
size=3D3
  face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
  </td>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Working
  Group Last Call for PPSP peer protocol</span></font><font size=3D3
  face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:sans-serif'>
  </span></font><font size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;
  font-family:=CB=CE=CC=E5'><o:p></o:p></span></font></p>
  </td>
 </tr>
 <tr>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier =
New"'>Apr</span></font><font
  size=3D3 face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:
  sans-serif'> </span></font><font size=3D2 face=3D"Courier New"><span =
lang=3DEN-US
  style=3D'font-size:10.0pt;font-family:"Courier New"'><br>
  2011</span></font><font size=3D3 face=3Dsans-serif><span lang=3DEN-US
  style=3D'font-size:12.0pt;font-family:sans-serif'> </span></font><font =
size=3D3
  face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
  </td>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Working
  Group Last Call for PPSP tracker protocol</span></font><font size=3D3
  face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:sans-serif'>
  </span></font><font size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;
  font-family:=CB=CE=CC=E5'><o:p></o:p></span></font></p>
  </td>
 </tr>
 <tr>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Aug
  2011</span></font><font size=3D3 face=3Dsans-serif><span lang=3DEN-US
  style=3D'font-size:12.0pt;font-family:sans-serif'> </span></font><font =
size=3D3
  face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
  </td>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Submit
  PPSP peer protocol to IESG as Proposed Standard</span></font><font =
size=3D3
  face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:sans-serif'>
  </span></font><font size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;
  font-family:=CB=CE=CC=E5'><o:p></o:p></span></font></p>
  </td>
 </tr>
 <tr>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Aug
  2011</span></font><font size=3D3 face=3Dsans-serif><span lang=3DEN-US
  style=3D'font-size:12.0pt;font-family:sans-serif'> </span></font><font =
size=3D3
  face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
  </td>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Submit
  PPSP tracker protocol to IESG as Proposed Standard</span></font><font =
size=3D3
  face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:sans-serif'>
  </span></font><font size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;
  font-family:=CB=CE=CC=E5'><o:p></o:p></span></font></p>
  </td>
 </tr>
 <tr>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Nov
  2011</span></font><font size=3D3 face=3Dsans-serif><span lang=3DEN-US
  style=3D'font-size:12.0pt;font-family:sans-serif'> </span></font><font =
size=3D3
  face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
  </td>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Working
  Group Last Call of usage document</span></font><font size=3D3 =
face=3Dsans-serif><span
  lang=3DEN-US style=3D'font-size:12.0pt;font-family:sans-serif'> =
</span></font><font
  size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
  </td>
 </tr>
 <tr>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Nov
  2011</span></font><font size=3D3 face=3Dsans-serif><span lang=3DEN-US
  style=3D'font-size:12.0pt;font-family:sans-serif'> </span></font><font =
size=3D3
  face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
  </td>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Working
  Group Last Call of mobility BCP document</span></font><font size=3D3
  face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:sans-serif'>
  </span></font><font size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;
  font-family:=CB=CE=CC=E5'><o:p></o:p></span></font></p>
  </td>
 </tr>
 <tr>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Jan
  2012</span></font><font size=3D3 face=3Dsans-serif><span lang=3DEN-US
  style=3D'font-size:12.0pt;font-family:sans-serif'> </span></font><font =
size=3D3
  face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
  </td>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Submit
  usage document to IESG as Informational document</span></font><font =
size=3D3
  face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:sans-serif'>
  </span></font><font size=3D3 face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;
  font-family:=CB=CE=CC=E5'><o:p></o:p></span></font></p>
  </td>
 </tr>
 <tr>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Jan
  2012</span></font><font size=3D3 face=3Dsans-serif><span lang=3DEN-US
  style=3D'font-size:12.0pt;font-family:sans-serif'> </span></font><font =
size=3D3
  face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
  </td>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Submit
  mobility BCP document to IESG as Informational =
document</span></font><font
  size=3D3 face=3Dsans-serif><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:
  sans-serif'> </span></font><font size=3D3 face=3D=CB=CE=CC=E5><span =
lang=3DEN-US
  =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
  </td>
 </tr>
 <tr>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Apr
  2012</span></font><font size=3D3 face=3Dsans-serif><span lang=3DEN-US
  style=3D'font-size:12.0pt;font-family:sans-serif'> </span></font><font =
size=3D3
  face=3D=CB=CE=CC=E5><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
  </td>
  <td valign=3Dtop style=3D'padding:.75pt .75pt .75pt .75pt'>
  <p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><font =
size=3D2
  face=3D"Courier New"><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Courier New"'>Dissolve
  or re-charter </span></font><font size=3D3 face=3D=CB=CE=CC=E5><span =
lang=3DEN-US
  =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5'><o:p></o:p></span></f=
ont></p>
  </td>
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</table>

<p><font size=3D2 face=3DVerdana><span lang=3DEN-US =
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Hi Yunfei,
=20
To define the ppsp peer protocol, The charter writes: This protocol will =
define how PPSP peers advertise data availability and exchange neighbor =
peers.
=20
I think, it means a peer is required to exchange 2 kinds of information: =
 the peer's won data availability,and other peers connected with the =
peer who have related data. And the second information is the useful =
extension to the peer list from the tracker. Right?
=20
So, the sentence could be changed as: This protocol will define how PPSP =
peers exchange their won data availability and enrich their peer lists =
at the same time among peers.
=20
However, the question is, should we give such details about which =
content should be exchanged in Charter stage? Or just to simply say " =
define how to exchange useful information among peers"?=20
=20
Br
Xiao Lin
=20


________________________________

From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of =
ext zhangyunfei
Sent: Monday, December 28, 2009 3:18 PM
To: liuhy @ uusee; meng.yu@zte.com.cn
Cc: ppsp@ietf.org
Subject: Re: [ppsp] =B4=F0=B8=B4: Re: ppsp revised charter proposal


Thanks Harold for your clarification from UUSee's experience.
One more question:People may be confused about the "peer list" in the =
tracker protocol and the "peer list"in the peer protocol since they are =
same literally. We may express it clearer about this. Any good =
suggestions?
BR
Yunfei
________________________________

zhangyunfei
2009-12-28
________________________________

=B7=A2=BC=FE=C8=CB=A3=BA liuhy @ uusee
=B7=A2=CB=CD=CA=B1=BC=E4=A3=BA 2009-12-28 15:17:58
=CA=D5=BC=FE=C8=CB=A3=BA meng.yu@zte.com.cn; zhangyunfei
=B3=AD=CB=CD=A3=BA li.lichun1@zte.com.cn; ppsp@ietf.org; =
ppsp-bounces@ietf.org
=D6=F7=CC=E2=A3=BA Re: =B4=F0=B8=B4: Re: [ppsp] ppsp revised charter =
proposal
=20
Agree.
=20
"Peer list" is much clear than "neighbor peers".
=20
Actually, peers usually exchanges the list of "useful list". Since =
connected peers either acquir resources or provide resources to each =
other. So, peers can do some filter work locally.
=20
=20
2009-12-28=20
________________________________


=C1=F5=BB=B3=D3=EE /  Harold Liu
=D3=C6=CA=D3=CD=F8 CTO
=B1=B1=BE=A9=D3=C6=CA=D3=BB=A5=B6=AF=BF=C6=BC=BC=D3=D0=CF=DE=B9=AB=CB=BE
=B5=D8=D6=B7=A3=BA=B1=B1=BE=A9=CA=D0=B6=AB=B3=C7=C7=F8=B6=AB=D6=B1=C3=C5=B1=
=B1=D0=A1=BD=D6=C7=E0=C1=FA=BA=FA=CD=AC1=BA=C5=B8=E8=BB=AA=B4=F3=CF=C39=B2=
=E3
=D3=CA=B1=E0=A3=BA100007
=B5=E7=BB=B0=A3=BA+86-10-84186689
=CA=D6=BB=FA=A3=BA13901143864

=D3=CA=BC=FE=A3=BAliuhy@uusee.com <mailto:xuh@uusee.com>=20
=CD=F8=D6=B7=A3=BAwww.uusee.com <http://www.uusee.com/> =20

=20
________________________________

=B7=A2=BC=FE=C8=CB=A3=BA meng.yu@zte.com.cn=20
=B7=A2=CB=CD=CA=B1=BC=E4=A3=BA 2009-12-28  14:49:35=20
=CA=D5=BC=FE=C8=CB=A3=BA zhangyunfei=20
=B3=AD=CB=CD=A3=BA li.lichun1@zte.com.cn; liuhy; ppsp@ietf.org; =
ppsp-bounces@ietf.org=20
=D6=F7=CC=E2=A3=BA =B4=F0=B8=B4: Re: [ppsp] ppsp revised charter =
proposal=20

Yes, it may arouse some problems. If PPSP want to do that, some lite =
security mechanism maybe needed.=20

Besides that, should we change "exchange neighbor peers" to "exchange =
peer lists information (owning some resource)" so as to avoid the =
confusion of 'neighbor'?=20




"zhangyunfei" <zhangyunfei@chinamobile.com>=20
=B7=A2=BC=FE=C8=CB:  ppsp-bounces@ietf.org=20

2009-12-28 14:23=20

=CA=D5=BC=FE=C8=CB
"li.lichun1@zte.com.cn" <li.lichun1@zte.com.cn>=20
=B3=AD=CB=CD
"ppsp@ietf.org" <ppsp@ietf.org>, liuhy <liuhy@uusee.com>=20
=D6=F7=CC=E2
Re: [ppsp] ppsp revised charter proposal=09

	=09




Thanks Lichun.=20
According to my understanding,peers exchange the neigbor peers =
information,i.e. which peer remains connected and which pieces already =
have been downloaded. As for non-neigbor peers which it just receives =
from the tracker, I am really not sure about the effect of such exchange =
because such peers are un-confirmed.=20
Is there anybody who can tell us more about this point in =
practice?James?Harold?Omer?=20
Thanks!=20
 =20
BR=20
Yunfei=20
 =20

________________________________


zhangyunfei=20
2009-12-28=20

________________________________


=B7=A2=BC=FE=C8=CB=A3=BA li.lichun1@zte.com.cn=20
=B7=A2=CB=CD=CA=B1=BC=E4=A3=BA 2009-12-28 11:04:21=20
=CA=D5=BC=FE=C8=CB=A3=BA zhangyunfei=20
=B3=AD=CB=CD=A3=BA ppsp@ietf.org=20
=D6=F7=CC=E2=A3=BA Re: re: [ppsp] ppsp revised charter proposal=20
 =20

The charter says "exchange neighbor peers". I think the peer list may =
include peers other than neighbors. Peers can also exchange neighbors of =
neighbors and non-neighbor peers known from tracker.=20


BR,=20
Lichun



"zhangyunfei" <zhangyunfei@chinamobile.com>=20

2009-12-28 10:13=20



=CA=D5=BC=FE=C8=CB
"li.lichun1@zte.com.cn" <li.lichun1@zte.com.cn>=20
=B3=AD=CB=CD
"ppsp@ietf.org" <ppsp@ietf.org>=20
=D6=F7=CC=E2
Re: re: [ppsp] ppsp revised charter proposal=09


	=09





Yes,you are right,Lichun.=20
As suggested in the BOF and mailing list,peer gossip(including exchange =
of peer list)can make peers know more peers and alleviate the burden of =
the tracker.=20
=20
BR=20
Yunfei=20
=20

________________________________


zhangyunfei=20
2009-12-28=20

________________________________


=B7=A2=BC=FE=C8=CB=A3=BA li.lichun1@zte.com.cn=20
=B7=A2=CB=CD=CA=B1=BC=E4=A3=BA 2009-12-28 09:36:31=20
=CA=D5=BC=FE=C8=CB=A3=BA zhangyunfei=20
=B3=AD=CB=CD=A3=BA ppsp@ietf.org; ppsp-bounces@ietf.org=20
=D6=F7=CC=E2=A3=BA re: [ppsp] ppsp revised charter proposal=20
=20

Hi, yunfei.=20
Peers can exchange peer lists, right?=20


Best regards,
Lichun Li


"zhangyunfei" <zhangyunfei@chinamobile.com>=20
=B7=A2=BC=FE=C8=CB:  ppsp-bounces@ietf.org=20

2009-12-26 16:52=20



=CA=D5=BC=FE=C8=CB
"ppsp@ietf.org" <ppsp@ietf.org>=20
=B3=AD=CB=CD
=D6=F7=CC=E2
[ppsp] ppsp revised charter proposal=09




	=09






Dear all,=20

   The latest version of PPSP charter is attached.Welcome to comment on =
this.I guess many of you guys are enjoying the Christmas holiday.Merry =
X'mas and happy new year!Wish to hear your valuable suggestions in the =
beginning of 2010.:)=20

   Hope PPSP can have a great development in the new year with all of =
your participation and contribution.=20

The main modifications are:=20

1)Para 2:=20

a)wish to make it better understood about what the tracker protocol and =
the peer protocol differ in and reply the BOF comments that the two =
protocols may be a single one;=20

b)Add the NAT issue raised in the BOF;=20

2)Para3:=20

a) Para3-bullet 4,adding the gossip communication in peer protocol as =
discussed in the mailing list;=20

b)Para3-bullet7, deleted as suggested by Lars that optional part can be =
detered until we think it clearer;=20

3)Para4, adding LEDBAT as reference raised in the BOF.=20

4)Para5,deleting privay raised in the BOF.=20

5)Para6:=20

a)bullet1:Adding the description of considering the NAT traversal and =
the multiple stream senario as discussed in the BOF and mailing list.=20

BR=20

Yunfei=20

*************************************************************************=
=20
Description of PPSP Working Group:=20
The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP WG) is =
chartered to develop standard signaling protocols (called PPSP =
protocols) for multiple types of entities (e.g. intelligent endpoints, =
caches, content distribution network nodes, and/or other edge devices) =
to participate in P2P streaming systems in both fixed and mobile =
Internet.=20

There are two kinds of components in PPSP protocols, i.e., =
=A1=B0trackers=A1=B1 and =A1=B0peers=A1=B1. PPSP protocols include the =
PPSP tracker protocol =A8C a signaling protocol between =
=A1=B0trackers=A1=B1 and =A1=B0peers=A1=B1, and the PPSP peer protocol =
=A8C a signaling protocol among =A1=B0peers=A1=B1. The two protocols =
ensure peers to get streaming data within certain time constraints. PPSP =
tracker protocol deals with the initial and periodical exchanges between =
tracker and peers: initially the peers contact the tracker to report =
their static information (like IP address, NAT types and other useful =
things) and get a list of peers for a specific channel or streaming file =
from the tracker; periodically the tracker maintains lists of =
participating peers according to the report from the peers about their =
status information. PPSP peer protocol deals with the exchanges among =
peers. The peer exchanges its data availability and neighbor peer =
information with other peers. With these information, it can connect =
with these peers for further data downloading.  =20

This WG's primary tasks are to produce:
1. A =A1=B0problem statement=A1=B1 document describing the problems, =
incentives, and scope of developing the PPSP protocols, as well as =
common terminologies and concepts.=20

2. A =A1=B0requirements=A1=B1 document listing the requirements on the =
designed PPSP protocols (e.g., general functionality and performance =
requirements of PPSP protocols or basic types of information that PPSP =
protocols should communicate to facilitate P2P streaming).=20

3. An "architectural survey" document explaining the current P2P =
streaming architectures, in particular tracker-based P2P streaming, and =
key issues in best practice.=20

4. A proposed standard defining the PPSP peer protocol. This protocol =
will define how PPSP peers advertise data availability and exchange =
neighbor peers. The protocol will also define the requests and responses =
of data chunks among PPSP peers.=20

5. A proposed standard defining the PPSP tracker protocol. This protocol =
will define how PPSP peers inform and request information from PPSP =
trackers and how PPSP trackers reply to the requests.=20

6. A =A1=B0usage document=A1=B1 explaining how the protocols defined =
above, along with existing IETF protocols, such as RELAOD, ALTO and =
RTSP, can inter-operate; and how they may be integrated together to =
produce complete P2P streaming systems.=20


The work planned for the PPSP WG is distinct from, but requires close =
participation with, work in other IETF WGs, particularly P2PSIP, =
ALTO,LEDBAT and MMUSIC. The PPSP WG assumes that it cannot modify =
baseline P2PSIP, ALTO, LEDBAT and MMUSIC behaviors. If PPSP determines =
that extensions to P2PSIP, ALTO,LEDBAT and MMUSIC are needed, PPSP will =
seek to define such extensions and present to the respective working =
groups.=20

The design of PPSP has to consider security issues. The protocol =
document will contain a complete description of the security issues that =
PPSP should address.=20

The following topics are excluded from this WG's scope:
1. Transport mechanisms for data transmission among PPSP peers, e.g. =
using TCP or UDP, unicast or multicast, etc. However the  design  of  =
PPSP  will  consider how it can be combined with the transport =
mechanisms, including NAT traversal problem. The design of PPSP will =
also consider the scenario of transmission of multiple streams  (layered =
 media).  This includes considering various media descriptions (e.g. =
data chunk description in peer protocol) after investigating different =
media coding mechanisms (e.g. SVC, MDC) to incorporate their features in =
the protocol.=20

2. Network coding mechanisms in P2P streaming. Network coding may be =
used in P2P streaming, but its support is beyond the scope of current =
charter.=20

3. Play-out mechanisms including streaming control (e.g., pause, =
fast-forward, and rewind).=20

4. Algorithms that may be different in different deployments (e.g., =
chunk selection, local storage strategies).=20

5. Research type questions related to P2P streaming. This WG will =
instead forward such questions to the IRTF P2PRG or other RG as =
appropriate. Examples include cache management.=20
Goals and Milestones:=20

Apr 2010 	Working Group Last Call for problem statement=20
Jun 2010 	Submit problem statement to IESG as Informational document=20
Aug 2010 	Working Group Last Call for architecture survey=20
Aug 2010 	Working Group Last Call for requirements=20
Oct=20
2010 	Submit architecture survey to IESG as Informational document=20
Oct 2010 	Submit requirements to IESG as Informational document=20
Apr 2011 	Working Group Last Call for PPSP peer protocol=20
Apr=20
2011 	Working Group Last Call for PPSP tracker protocol=20
Aug 2011 	Submit PPSP peer protocol to IESG as Proposed Standard=20
Aug 2011 	Submit PPSP tracker protocol to IESG as Proposed Standard=20
Nov 2011 	Working Group Last Call of usage document=20
Nov 2011 	Working Group Last Call of mobility BCP document=20
Jan 2012 	Submit usage document to IESG as Informational document=20
Jan 2012 	Submit mobility BCP document to IESG as Informational document =

Apr 2012 	Dissolve or re-charter =09



 =20

________________________________


zhangyunfei=20
2009-12-26_______________________________________________
ppsp mailing list
ppsp@ietf.org
https://www.ietf.org/mailman/listinfo/ppsp


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DIV.Section1 {
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}
</STYLE>
</HEAD>
<BODY>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D430132807-28122009><FONT =
color=3D#0000ff>Hi=20
Yunfei,</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D430132807-28122009><FONT=20
color=3D#0000ff></FONT></SPAN>&nbsp;</DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D430132807-28122009><FONT =
color=3D#0000ff>To=20
define the ppsp peer protocol, The charter <SPAN =
class=3D430132807-28122009><FONT=20
color=3D#0000ff>writes: </FONT><FONT face=3D"Courier New" =
color=3D#000000>This=20
protocol will define how PPSP peers advertise data availability and =
exchange=20
neighbor peers.</FONT></SPAN></FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D430132807-28122009><FONT=20
color=3D#0000ff></FONT></SPAN>&nbsp;</DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D430132807-28122009><FONT =
color=3D#0000ff>I=20
think, it means a peer&nbsp;is required to exchange 2&nbsp;kinds of=20
information:&nbsp; the peer's won&nbsp;data availability,and other=20
peers&nbsp;connected with the peer who have related data. And the second =

information is the useful extension to the peer list from the tracker.=20
Right?</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D430132807-28122009><FONT=20
color=3D#0000ff></FONT></SPAN>&nbsp;</DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D430132807-28122009><FONT =
color=3D#0000ff>So,=20
the sentence could be changed as: This protocol will define how PPSP=20
peers&nbsp;exchange their won data availability and enrich their peer =
lists at=20
the same time&nbsp;among peers.</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D430132807-28122009><FONT=20
color=3D#0000ff></FONT></SPAN>&nbsp;</DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D430132807-28122009><FONT=20
color=3D#0000ff>However, the question is, should&nbsp;we give such =
details about=20
which content should be exchanged in Charter stage? Or just to simply =
say "=20
define how to exchange useful information among peers"? =
</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D430132807-28122009><FONT=20
color=3D#0000ff></FONT></SPAN>&nbsp;</DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D430132807-28122009><FONT=20
color=3D#0000ff>Br</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D430132807-28122009><FONT =
color=3D#0000ff>Xiao=20
Lin</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D430132807-28122009><FONT=20
face=3D"Courier New"></FONT></SPAN>&nbsp;</DIV><FONT =
color=3D#0000ff></FONT><BR>
<DIV class=3DOutlookMessageHeader lang=3Den-us dir=3Dltr align=3Dleft>
<HR tabIndex=3D-1>
<FONT face=3DTahoma size=3D2><B>From:</B> ppsp-bounces@ietf.org=20
[mailto:ppsp-bounces@ietf.org] <B>On Behalf Of </B>ext=20
zhangyunfei<BR><B>Sent:</B> Monday, December 28, 2009 3:18 =
PM<BR><B>To:</B>=20
liuhy @ uusee; meng.yu@zte.com.cn<BR><B>Cc:</B> =
ppsp@ietf.org<BR><B>Subject:</B>=20
Re: [ppsp] =B4=F0=B8=B4: Re: ppsp revised charter =
proposal<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV><FONT face=3DVerdana color=3D#0000ff size=3D2>Thanks Harold for =
your=20
clarification from UUSee's experience.</FONT></DIV>
<DIV><FONT face=3DVerdana color=3D#0000ff size=3D2>One more =
question:People may be=20
confused about the "peer list" in the tracker protocol and the "peer =
list"in the=20
peer protocol since they are same literally. We may express it clearer =
about=20
this. Any good suggestions?</FONT></DIV>
<DIV><FONT face=3DVerdana color=3D#0000ff size=3D2>BR</FONT></DIV>
<DIV><FONT face=3DVerdana color=3D#0000ff size=3D2>Yunfei</FONT></DIV>
<DIV align=3Dleft>
<DIV align=3Dleft><FONT face=3DVerdana size=3D2>
<HR style=3D"WIDTH: 122px; HEIGHT: 2px" SIZE=3D2>
</FONT></DIV>
<DIV><FONT color=3D#c0c0c0><FONT face=3DVerdana =
size=3D2>zhangyunfei</FONT></DIV>
<DIV><FONT face=3DVerdana size=3D2>2009-12-28</FONT></FONT></DIV></DIV>
<DIV><FONT face=3DVerdana size=3D2>
<HR>
</FONT></DIV>
<DIV><FONT face=3DVerdana><FONT =
size=3D2><STRONG>=B7=A2=BC=FE=C8=CB=A3=BA</STRONG> liuhy @=20
uusee</FONT></FONT></DIV>
<DIV><FONT face=3DVerdana><FONT =
size=3D2><STRONG>=B7=A2=CB=CD=CA=B1=BC=E4=A3=BA</STRONG>=20
2009-12-28&nbsp;15:17:58</FONT></FONT></DIV>
<DIV><FONT face=3DVerdana><FONT =
size=3D2><STRONG>=CA=D5=BC=FE=C8=CB=A3=BA</STRONG> meng.yu@zte.com.cn;=20
zhangyunfei</FONT></FONT></DIV>
<DIV><FONT face=3DVerdana><FONT =
size=3D2><STRONG>=B3=AD=CB=CD=A3=BA</STRONG> li.lichun1@zte.com.cn;=20
ppsp@ietf.org; ppsp-bounces@ietf.org</FONT></FONT></DIV>
<DIV><FONT face=3DVerdana><FONT =
size=3D2><STRONG>=D6=F7=CC=E2=A3=BA</STRONG> Re: =B4=F0=B8=B4: Re: =
[ppsp]=20
ppsp revised charter proposal</FONT></FONT></DIV>
<DIV><FONT face=3DVerdana size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DVerdana size=3D2>
<DIV><FONT face=3DVerdana color=3D#000080 size=3D2>Agree.</FONT></DIV>
<DIV><FONT color=3D#000080></FONT>&nbsp;</DIV>
<DIV><FONT color=3D#000080>"Peer list" is much clear than "neighbor=20
peers".</FONT></DIV>
<DIV><FONT color=3D#000080></FONT>&nbsp;</DIV>
<DIV><FONT color=3D#000080>Actually, peers usually exchanges the list of =
"useful=20
list". Since connected peers either acquir resources or provide =
resources to=20
each other. So, peers can do some filter work locally.</FONT></DIV>
<DIV><FONT face=3DVerdana color=3D#000080 size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DVerdana color=3D#000080 size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DVerdana color=3D#c0c0c0 size=3D2>2009-12-28 =
</FONT></DIV><FONT=20
face=3DVerdana color=3D#000080 size=3D2>
<HR style=3D"WIDTH: 100px" align=3Dleft color=3D#b5c4df SIZE=3D1>
</FONT>
<DIV><FONT face=3DVerdana color=3D#c0c0c0 size=3D2><SPAN>
<DIV>
<DIV>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left"=20
align=3Dleft><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: =
=CB=CE=CC=E5">=C1=F5=BB=B3=D3=EE</SPAN><SPAN=20
lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: =
'Arial','sans-serif'">=20
/&nbsp; Harold Liu<BR></SPAN><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: =
=CB=CE=CC=E5">=D3=C6=CA=D3=CD=F8</SPAN><SPAN=20
lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: =
'Arial','sans-serif'">=20
CTO<BR></SPAN><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: =
=CB=CE=CC=E5">=B1=B1=BE=A9=D3=C6=CA=D3=BB=A5=B6=AF=BF=C6=BC=BC=D3=D0=CF=DE=
=B9=AB=CB=BE</SPAN><SPAN=20
lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: =
'Arial','sans-serif'"><BR></SPAN><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: =
=CB=CE=CC=E5">=B5=D8=D6=B7=A3=BA=B1=B1=BE=A9=CA=D0=B6=AB=B3=C7=C7=F8=B6=AB=
=D6=B1=C3=C5=B1=B1=D0=A1=BD=D6=C7=E0=C1=FA=BA=FA=CD=AC</SPAN><SPAN=20
lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: =
'Arial','sans-serif'">1</SPAN><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: =
=CB=CE=CC=E5">=BA=C5=B8=E8=BB=AA=B4=F3=CF=C3</SPAN><SPAN=20
lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: =
'Arial','sans-serif'">9</SPAN><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: =
=CB=CE=CC=E5">=B2=E3</SPAN><SPAN=20
lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: =
'Arial','sans-serif'"><BR></SPAN><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: =
=CB=CE=CC=E5">=D3=CA=B1=E0=A3=BA</SPAN><SPAN=20
lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: =
'Arial','sans-serif'">100007<BR></SPAN><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: =
=CB=CE=CC=E5">=B5=E7=BB=B0=A3=BA</SPAN><SPAN=20
lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: =
'Arial','sans-serif'">+86-10-84186689<BR></SPAN><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: =
=CB=CE=CC=E5">=CA=D6=BB=FA=A3=BA</SPAN><SPAN=20
lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: =
'Arial','sans-serif'">13901143864<o:p></o:p></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left"=20
align=3Dleft><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: =
=CB=CE=CC=E5">=D3=CA=BC=FE=A3=BA</SPAN><SPAN=20
lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: =
'Arial','sans-serif'"><A=20
href=3D"mailto:xuh@uusee.com"><SPAN=20
style=3D"COLOR: #a6a6a6">liuhy@uusee.com</SPAN></A><BR></SPAN><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: =
=CB=CE=CC=E5">=CD=F8=D6=B7=A3=BA</SPAN><SPAN=20
lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: =
'Arial','sans-serif'"><A=20
href=3D"http://www.uusee.com/"><SPAN=20
style=3D"COLOR: #a6a6a6">www.uusee.com</SPAN></A> </SPAN><SPAN =
lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: =
'Verdana','sans-serif'"><o:p></o:p></SPAN></P>&nbsp;</DIV></DIV></SPAN></=
FONT></DIV>
<HR color=3D#b5c4df SIZE=3D1>

<DIV><FONT face=3DVerdana =
size=3D2><STRONG>=B7=A2=BC=FE=C8=CB=A3=BA</STRONG> meng.yu@zte.com.cn=20
</FONT></DIV>
<DIV><FONT face=3DVerdana =
size=3D2><STRONG>=B7=A2=CB=CD=CA=B1=BC=E4=A3=BA</STRONG> =
2009-12-28&nbsp; 14:49:35=20
</FONT></DIV>
<DIV><FONT face=3DVerdana =
size=3D2><STRONG>=CA=D5=BC=FE=C8=CB=A3=BA</STRONG> zhangyunfei =
</FONT></DIV>
<DIV><FONT face=3DVerdana size=3D2><STRONG>=B3=AD=CB=CD=A3=BA</STRONG> =
li.lichun1@zte.com.cn;=20
liuhy; ppsp@ietf.org; ppsp-bounces@ietf.org </FONT></DIV>
<DIV><FONT face=3DVerdana size=3D2><STRONG>=D6=F7=CC=E2=A3=BA</STRONG> =
=B4=F0=B8=B4: Re: [ppsp] ppsp revised=20
charter proposal </FONT></DIV>
<DIV><FONT face=3DVerdana size=3D2></FONT></DIV>
<DIV><FONT face=3DVerdana size=3D2><BR><FONT face=3Dsans-serif =
size=3D2>Yes, it may=20
arouse some problems. If PPSP want to do that, some lite security =
mechanism=20
maybe needed.</FONT> <BR><BR><FONT face=3Dsans-serif size=3D2>Besides =
that, should=20
we change "</FONT><FONT face=3D"Courier New" size=3D2>exchange neighbor=20
peers</FONT><FONT face=3Dsans-serif size=3D2>" to "exchange peer lists =
information=20
</FONT><FONT face=3Dsans-serif color=3D#c0c0c0 size=3D2>(owning some=20
resource)</FONT><FONT face=3Dsans-serif size=3D2>" so as to avoid the =
confusion of=20
'neighbor'?</FONT> <BR><BR><BR><BR>
<TABLE width=3D"100%">
  <TBODY>
  <TR vAlign=3Dtop>
    <TD width=3D"26%"><FONT face=3Dsans-serif size=3D1><B>"zhangyunfei"=20
      &lt;zhangyunfei@chinamobile.com&gt;</B> </FONT><BR><FONT =
face=3Dsans-serif=20
      size=3D1>=B7=A2=BC=FE=C8=CB: &nbsp;ppsp-bounces@ietf.org</FONT>=20
      <P><FONT face=3Dsans-serif size=3D1>2009-12-28 14:23</FONT> </P>
    <TD width=3D"73%">
      <TABLE width=3D"100%">
        <TBODY>
        <TR vAlign=3Dtop>
          <TD>
            <DIV align=3Dright><FONT face=3Dsans-serif =
size=3D1>=CA=D5=BC=FE=C8=CB</FONT></DIV>
          <TD><FONT face=3Dsans-serif size=3D1>"li.lichun1@zte.com.cn"=20
            &lt;li.lichun1@zte.com.cn&gt;</FONT>=20
        <TR vAlign=3Dtop>
          <TD>
            <DIV align=3Dright><FONT face=3Dsans-serif =
size=3D1>=B3=AD=CB=CD</FONT></DIV>
          <TD><FONT face=3Dsans-serif size=3D1>"ppsp@ietf.org"=20
            &lt;ppsp@ietf.org&gt;, liuhy &lt;liuhy@uusee.com&gt;</FONT>=20
        <TR vAlign=3Dtop>
          <TD>
            <DIV align=3Dright><FONT face=3Dsans-serif =
size=3D1>=D6=F7=CC=E2</FONT></DIV>
          <TD><FONT face=3Dsans-serif size=3D1>Re: [ppsp] ppsp revised =
charter=20
            proposal</FONT></TD></TR></TBODY></TABLE><BR>
      <TABLE>
        <TBODY>
        <TR vAlign=3Dtop>
          <TD>
          =
<TD></TD></TR></TBODY></TABLE><BR></TD></TR></TBODY></TABLE><BR><BR><BR><=
FONT=20
face=3DVerdana color=3Dblue size=3D2>Thanks Lichun.</FONT> <BR><FONT =
face=3DVerdana=20
color=3Dblue size=3D2>According to my understanding,peers exchange the =
neigbor peers=20
information,i.e. which peer remains connected and which pieces already =
have been=20
downloaded. As for non-neigbor peers which it just receives from the =
tracker, I=20
am really not sure about the effect of such exchange because such peers =
are=20
un-confirmed.</FONT> <BR><FONT face=3DVerdana color=3Dblue size=3D2>Is =
there anybody=20
who can tell us more about this point in =
practice?James?Harold?Omer?</FONT>=20
<BR><FONT face=3DVerdana color=3Dblue size=3D2>Thanks!</FONT> <BR><FONT=20
face=3Dsans-serif size=3D3>&nbsp;</FONT> <BR><FONT face=3DVerdana =
color=3Dblue=20
size=3D2>BR</FONT> <BR><FONT face=3DVerdana color=3Dblue =
size=3D2>Yunfei</FONT>=20
<BR><FONT face=3Dsans-serif size=3D3>&nbsp;</FONT> <BR>
<HR>
<BR><FONT face=3DVerdana color=3D#c0c0c0 size=3D2>zhangyunfei</FONT> =
<BR><FONT=20
face=3DVerdana color=3D#c0c0c0 size=3D2>2009-12-28</FONT> <BR>
<HR>
<BR><FONT face=3DVerdana size=3D2><B>=B7=A2=BC=FE=C8=CB=A3=BA</B> =
li.lichun1@zte.com.cn</FONT> <BR><FONT=20
face=3DVerdana size=3D2><B>=B7=A2=CB=CD=CA=B1=BC=E4=A3=BA</B> 2009-12-28 =
11:04:21</FONT> <BR><FONT=20
face=3DVerdana size=3D2><B>=CA=D5=BC=FE=C8=CB=A3=BA</B> =
zhangyunfei</FONT> <BR><FONT face=3DVerdana=20
size=3D2><B>=B3=AD=CB=CD=A3=BA</B> ppsp@ietf.org</FONT> <BR><FONT =
face=3DVerdana size=3D2><B>=D6=F7=CC=E2=A3=BA</B>=20
Re: re: [ppsp] ppsp revised charter proposal</FONT> <BR><FONT =
face=3Dsans-serif=20
size=3D3>&nbsp;</FONT> <BR><FONT face=3Dsans-serif size=3D2><BR>The =
charter says=20
"</FONT><FONT face=3D"Courier New" size=3D2>exchange neighbor =
peers</FONT><FONT=20
face=3Dsans-serif size=3D2>". I think the peer list may include peers =
other than=20
neighbors. Peers can also exchange neighbors of neighbors and =
non-neighbor peers=20
known from tracker. <BR><BR><BR>BR,</FONT><FONT face=3DVerdana size=3D2> =

</FONT><FONT face=3Dsans-serif size=3D2><BR>Lichun</FONT><FONT =
face=3DVerdana=20
size=3D2><BR><BR><BR></FONT>
<TABLE width=3D"100%">
  <TBODY>
  <TR vAlign=3Dtop>
    <TD width=3D"48%"><FONT face=3Dsans-serif size=3D1><B>"zhangyunfei"=20
      &lt;zhangyunfei@chinamobile.com&gt;</B> </FONT>
      <P><FONT face=3Dsans-serif size=3D1>2009-12-28 10:13</FONT><FONT=20
      face=3Dsans-serif size=3D3> </FONT></P>
    <TD width=3D"51%"><BR>
      <TABLE width=3D"100%">
        <TBODY>
        <TR vAlign=3Dtop>
          <TD width=3D"12%">
            <DIV align=3Dright><FONT face=3Dsans-serif =
size=3D1>=CA=D5=BC=FE=C8=CB</FONT></DIV>
          <TD width=3D"87%"><FONT face=3Dsans-serif =
size=3D1>"li.lichun1@zte.com.cn"=20
            &lt;li.lichun1@zte.com.cn&gt;</FONT><FONT face=3Dsans-serif =
size=3D3>=20
            </FONT>
        <TR vAlign=3Dtop>
          <TD>
            <DIV align=3Dright><FONT face=3Dsans-serif =
size=3D1>=B3=AD=CB=CD</FONT></DIV>
          <TD><FONT face=3Dsans-serif size=3D1>"ppsp@ietf.org"=20
            &lt;ppsp@ietf.org&gt;</FONT><FONT face=3Dsans-serif =
size=3D3> </FONT>
        <TR vAlign=3Dtop>
          <TD>
            <DIV align=3Dright><FONT face=3Dsans-serif =
size=3D1>=D6=F7=CC=E2</FONT></DIV>
          <TD><FONT face=3Dsans-serif size=3D1>Re: re: [ppsp] ppsp =
revised charter=20
            proposal</FONT></TD></TR></TBODY></TABLE><BR><BR>
      <TABLE width=3D"100%">
        <TBODY>
        <TR vAlign=3Dtop>
          <TD width=3D"49%">
          <TD=20
width=3D"50%"></TD></TR></TBODY></TABLE><BR></TD></TR></TBODY></TABLE><BR=
><FONT=20
face=3DVerdana size=3D2><BR><BR></FONT><FONT face=3DVerdana color=3Dblue =

size=3D2><BR>Yes,you are right,Lichun. <BR>As suggested in the BOF and =
mailing=20
list,peer gossip(including exchange of peer list)can make peers know =
more peers=20
and alleviate the burden of the tracker.</FONT><FONT face=3DVerdana =
size=3D2>=20
</FONT><FONT face=3Dsans-serif size=3D3><BR></FONT><FONT face=3DVerdana=20
size=3D2>&nbsp;</FONT><FONT face=3DVerdana color=3Dblue =
size=3D2><BR>BR</FONT><FONT=20
face=3DVerdana size=3D2> </FONT><FONT face=3DVerdana color=3Dblue=20
size=3D2><BR>Yunfei</FONT><FONT face=3DVerdana size=3D2> </FONT><FONT =
face=3Dsans-serif=20
size=3D3><BR></FONT><FONT face=3DVerdana size=3D2>&nbsp;<BR></FONT>
<HR>
<FONT face=3DVerdana color=3D#c0c0c0 =
size=3D2><BR>zhangyunfei</FONT><FONT face=3DVerdana=20
size=3D2> </FONT><FONT face=3DVerdana color=3D#c0c0c0=20
size=3D2><BR>2009-12-28</FONT><FONT face=3DVerdana size=3D2> <BR></FONT>
<HR>
<FONT face=3DVerdana size=3D2><B><BR>=B7=A2=BC=FE=C8=CB=A3=BA</B> =
li.lichun1@zte.com.cn <B><BR>=B7=A2=CB=CD=CA=B1=BC=E4=A3=BA</B>=20
2009-12-28 09:36:31 <B><BR>=CA=D5=BC=FE=C8=CB=A3=BA</B> zhangyunfei =
<B><BR>=B3=AD=CB=CD=A3=BA</B> ppsp@ietf.org;=20
ppsp-bounces@ietf.org <B><BR>=D6=F7=CC=E2=A3=BA</B> re: [ppsp] ppsp =
revised charter proposal=20
</FONT><FONT face=3Dsans-serif size=3D3><BR></FONT><FONT face=3DVerdana=20
size=3D2>&nbsp;</FONT><FONT face=3Dsans-serif size=3D2><BR><BR>Hi, =
yunfei.</FONT><FONT=20
face=3DVerdana size=3D2> </FONT><FONT face=3Dsans-serif =
size=3D2><BR>Peers can exchange=20
peer lists, right?</FONT><FONT face=3DVerdana size=3D2> </FONT><FONT =
face=3Dsans-serif=20
size=3D2><BR><BR><BR>Best regards,<BR>Lichun Li</FONT><FONT =
face=3DVerdana=20
size=3D2><BR><BR></FONT>
<TABLE width=3D"100%">
  <TBODY>
  <TR vAlign=3Dtop>
    <TD width=3D"54%"><FONT face=3Dsans-serif size=3D1><B>"zhangyunfei"=20
      &lt;zhangyunfei@chinamobile.com&gt;</B> <BR>=B7=A2=BC=FE=C8=CB:=20
      &nbsp;ppsp-bounces@ietf.org</FONT><FONT face=3Dsans-serif =
size=3D3> </FONT>
      <P><FONT face=3Dsans-serif size=3D1>2009-12-26 16:52</FONT><FONT=20
      face=3Dsans-serif size=3D3> </FONT></P>
    <TD width=3D"45%"><BR>
      <TABLE width=3D"100%">
        <TBODY>
        <TR vAlign=3Dtop>
          <TD width=3D"14%">
            <DIV align=3Dright><FONT face=3Dsans-serif =
size=3D1>=CA=D5=BC=FE=C8=CB</FONT></DIV>
          <TD width=3D"85%"><FONT face=3Dsans-serif =
size=3D1>"ppsp@ietf.org"=20
            &lt;ppsp@ietf.org&gt;</FONT><FONT face=3Dsans-serif =
size=3D3> </FONT>
        <TR vAlign=3Dtop>
          <TD>
            <DIV align=3Dright><FONT face=3Dsans-serif =
size=3D1>=B3=AD=CB=CD</FONT></DIV>
          <TD>
        <TR vAlign=3Dtop>
          <TD>
            <DIV align=3Dright><FONT face=3Dsans-serif =
size=3D1>=D6=F7=CC=E2</FONT></DIV>
          <TD><FONT face=3Dsans-serif size=3D1>[ppsp] ppsp revised =
charter=20
            proposal</FONT></TD></TR></TBODY></TABLE><BR><FONT =
face=3Dsans-serif=20
      size=3D3><BR></FONT><BR>
      <TABLE width=3D"100%">
        <TBODY>
        <TR vAlign=3Dtop>
          <TD width=3D"49%">
          <TD=20
width=3D"50%"></TD></TR></TBODY></TABLE><BR></TD></TR></TBODY></TABLE><BR=
><FONT=20
face=3DVerdana size=3D2><BR><BR></FONT><FONT face=3D=CB=CE=CC=E5 =
size=3D3><BR></FONT><FONT=20
face=3DVerdana size=3D2><BR>Dear all, </FONT>
<P><FONT face=3DVerdana size=3D2>&nbsp; &nbsp;The latest version of PPSP =
charter is=20
attached.Welcome to comment on this.I guess many of you guys are =
enjoying the=20
Christmas holiday.Merry X'mas and happy new year!Wish to hear your =
valuable=20
suggestions in the beginning of 2010.:) </FONT>
<P><FONT face=3DVerdana size=3D2>&nbsp; &nbsp;Hope PPSP can have a great =
development=20
in the new year with all of your participation and contribution. </FONT>
<P><FONT face=3DVerdana size=3D2>The main modifications are: </FONT>
<P><FONT face=3DVerdana size=3D2>1)Para 2: </FONT>
<P><FONT face=3DVerdana size=3D2>a)wish to make it better understood =
about what the=20
tracker protocol and the peer protocol differ in and reply the BOF =
comments that=20
the two protocols may be a single one; </FONT>
<P><FONT face=3DVerdana size=3D2>b)Add the NAT issue raised in the BOF; =
</FONT>
<P><FONT face=3DVerdana size=3D2>2)Para3: </FONT>
<P><FONT face=3DVerdana size=3D2>a) Para3-</FONT><FONT face=3DArial =
size=3D2>bullet=20
4,adding the gossip communication in peer protocol as discussed in the =
mailing=20
list;</FONT><FONT face=3DVerdana size=3D2> </FONT>
<P><FONT face=3DArial size=3D2>b)Para3-bullet7, deleted as suggested by =
Lars that=20
optional part can be detered until we think it clearer;</FONT><FONT =
face=3DVerdana=20
size=3D2> </FONT>
<P><FONT face=3DArial size=3D2>3)Para4, adding LEDBAT as reference =
raised in the=20
BOF.</FONT><FONT face=3DVerdana size=3D2> </FONT>
<P><FONT face=3DArial size=3D2>4)Para5,deleting privay raised in the=20
BOF.</FONT><FONT face=3DVerdana size=3D2> </FONT>
<P><FONT face=3DArial size=3D2>5)Para6:</FONT><FONT face=3DVerdana =
size=3D2> </FONT>
<P><FONT face=3DArial size=3D2>a)bullet1:Adding the description of =
considering the=20
NAT traversal and the multiple stream senario as discussed in the BOF =
and=20
mailing list.</FONT><FONT face=3DVerdana size=3D2> </FONT>
<P><FONT face=3DVerdana size=3D2>BR </FONT>
<P><FONT face=3DVerdana size=3D2>Yunfei </FONT>
<P><FONT face=3DVerdana=20
size=3D2>****************************************************************=
*********=20
</FONT><FONT face=3D"Courier New" size=3D2><B><BR>Description of PPSP =
Working=20
Group:</B></FONT><FONT face=3DVerdana size=3D2> </FONT><FONT =
face=3D"Courier New"=20
size=3D2><BR>The Peer-to-Peer (P2P) Streaming Protocol working group =
(PPSP WG) is=20
chartered to develop standard signaling protocols (called PPSP =
protocols) for=20
multiple types of entities (e.g. intelligent endpoints, caches, content=20
distribution network nodes, and/or other edge devices) to participate in =
P2P=20
streaming systems in both fixed and mobile Internet.</FONT><FONT =
face=3DVerdana=20
size=3D2> </FONT><FONT face=3D"Courier New" size=3D2><BR><BR>There are =
two kinds of=20
components in PPSP protocols, i.e., =A1=B0trackers=A1=B1 and =
=A1=B0peers=A1=B1. PPSP protocols=20
include the PPSP tracker protocol =A8C a signaling protocol between =
=A1=B0trackers=A1=B1 and=20
=A1=B0peers=A1=B1, and the PPSP peer protocol =A8C a signaling protocol =
among =A1=B0peers=A1=B1. The=20
two protocols ensure peers to get streaming data within certain time=20
constraints. PPSP tracker protocol deals with the initial and periodical =

exchanges between tracker and peers: initially the peers contact the =
tracker to=20
report their static information (like IP address, NAT types and other =
useful=20
things) and get a list of peers for a specific channel or streaming file =
from=20
the tracker; periodically the tracker maintains lists of participating =
peers=20
according to the report from the peers about their status information. =
PPSP peer=20
protocol deals with the exchanges among peers. The peer exchanges its =
data=20
availability and neighbor peer information with other peers. With these=20
information, it can connect with these peers for further data =
downloading.=20
&nbsp;</FONT><FONT face=3DVerdana size=3D2> <BR></FONT><FONT =
face=3D"Courier New"=20
size=3D2><BR>This WG's primary tasks are to produce:<BR>1. A =
=A1=B0problem statement=A1=B1=20
document describing the problems, incentives, and scope of developing =
the PPSP=20
protocols, as well as common terminologies and concepts.</FONT><FONT=20
face=3DVerdana size=3D2> <BR></FONT><FONT face=3D"Courier New" =
size=3D2><BR>2. A=20
=A1=B0requirements=A1=B1 document listing the requirements on the =
designed PPSP protocols=20
(e.g., general functionality and performance requirements of PPSP =
protocols or=20
basic types of information that PPSP protocols should communicate to =
facilitate=20
P2P streaming).</FONT><FONT face=3DVerdana size=3D2> </FONT><FONT =
face=3D"Courier New"=20
size=3D2><BR><BR>3. An "architectural survey" document explaining the =
current P2P=20
streaming architectures, in particular tracker-based P2P streaming, and =
key=20
issues in best practice.</FONT><FONT face=3DVerdana size=3D2> =
</FONT><FONT=20
face=3D"Courier New" size=3D2><BR><BR>4. A proposed standard defining =
the PPSP peer=20
protocol. This protocol will define how PPSP peers advertise data =
availability=20
and exchange neighbor peers. The protocol will also define the requests =
and=20
responses of data chunks among PPSP peers.</FONT><FONT face=3DVerdana =
size=3D2>=20
<BR></FONT><FONT face=3D"Courier New" size=3D2><BR>5. A proposed =
standard defining=20
the PPSP tracker protocol. This protocol will define how PPSP peers =
inform and=20
request information from PPSP trackers and how PPSP trackers reply to =
the=20
requests.</FONT><FONT face=3DVerdana size=3D2> <BR></FONT><FONT =
face=3D"Courier New"=20
size=3D2><BR>6. A =A1=B0usage document=A1=B1 explaining how the =
protocols defined above,=20
along with existing IETF protocols, such as RELAOD, ALTO and RTSP, can=20
inter-operate; and how they may be integrated together to produce =
complete P2P=20
streaming systems.</FONT><FONT face=3DVerdana size=3D2> <BR></FONT><FONT =

face=3D"Courier New" size=3D2><BR><BR>The work planned for the PPSP WG =
is distinct=20
from, but requires close participation with, work in other IETF WGs,=20
particularly P2PSIP, ALTO,LEDBAT and MMUSIC. The PPSP WG assumes that it =
cannot=20
modify baseline P2PSIP, ALTO, LEDBAT and MMUSIC behaviors. If PPSP =
determines=20
that extensions to P2PSIP, ALTO,LEDBAT and MMUSIC are needed, PPSP will =
seek to=20
define such extensions and present to the respective working =
groups.</FONT><FONT=20
face=3DVerdana size=3D2> </FONT><FONT face=3D"Courier New" =
size=3D2><BR><BR>The design=20
of PPSP has to consider security issues. The protocol document will =
contain a=20
complete description of the security issues that PPSP should=20
address.</FONT><FONT face=3DVerdana size=3D2> <BR></FONT><FONT =
face=3D"Courier New"=20
size=3D2><BR>The following topics are excluded from this WG's =
scope:<BR>1.=20
Transport mechanisms for data transmission among PPSP peers, e.g. using =
TCP or=20
UDP, unicast or multicast, etc. However the &nbsp;design &nbsp;of =
&nbsp;PPSP=20
&nbsp;will &nbsp;consider how it can be combined with the transport =
mechanisms,=20
including NAT traversal problem. The design of PPSP will also consider =
the=20
scenario of transmission of multiple streams &nbsp;(layered =
&nbsp;media).=20
&nbsp;This includes considering various media descriptions (e.g. data =
chunk=20
description in peer protocol) after investigating different media coding =

mechanisms (e.g. SVC, MDC) to incorporate their features in the=20
protocol.</FONT><FONT face=3DVerdana size=3D2> </FONT><FONT =
face=3D"Courier New"=20
size=3D2><BR><BR>2. Network coding mechanisms in P2P streaming. Network =
coding may=20
be used in P2P streaming, but its support is beyond the scope of current =

charter.</FONT><FONT face=3DVerdana size=3D2> <BR></FONT><FONT =
face=3D"Courier New"=20
size=3D2><BR>3. Play-out mechanisms including streaming control (e.g., =
pause,=20
fast-forward, and rewind).</FONT><FONT face=3DVerdana size=3D2> =
<BR></FONT><FONT=20
face=3D"Courier New" size=3D2><BR>4. Algorithms that may be different in =
different=20
deployments (e.g., chunk selection, local storage =
strategies).</FONT><FONT=20
face=3DVerdana size=3D2> <BR></FONT><FONT face=3D"Courier New" =
size=3D2><BR>5. Research=20
type questions related to P2P streaming. This WG will instead forward =
such=20
questions to the IRTF P2PRG or other RG as appropriate. Examples include =
cache=20
management.</FONT><FONT face=3DVerdana size=3D2> </FONT><FONT =
face=3D"Courier New"=20
size=3D2><B><BR>Goals and Milestones:</B></FONT><FONT face=3DVerdana =
size=3D2> </FONT>
<P>
<TABLE width=3D"100%" border=3D4>
  <TBODY>
  <TR vAlign=3Dtop>
    <TD width=3D"13%"><FONT face=3D"Courier New" size=3D2>Apr =
2010</FONT><FONT=20
      face=3Dsans-serif size=3D3> </FONT>
    <TD width=3D"86%"><FONT face=3D"Courier New" size=3D2>Working Group =
Last Call=20
      for problem statement</FONT><FONT face=3Dsans-serif size=3D3> =
</FONT>
  <TR vAlign=3Dtop>
    <TD><FONT face=3D"Courier New" size=3D2>Jun 2010</FONT><FONT =
face=3Dsans-serif=20
      size=3D3> </FONT>
    <TD><FONT face=3D"Courier New" size=3D2>Submit problem statement to =
IESG as=20
      Informational document</FONT><FONT face=3Dsans-serif size=3D3> =
</FONT>
  <TR vAlign=3Dtop>
    <TD><FONT face=3D"Courier New" size=3D2>Aug 2010</FONT><FONT =
face=3Dsans-serif=20
      size=3D3> </FONT>
    <TD><FONT face=3D"Courier New" size=3D2>Working Group Last Call for=20
      architecture survey</FONT><FONT face=3Dsans-serif size=3D3> =
</FONT>
  <TR vAlign=3Dtop>
    <TD><FONT face=3D"Courier New" size=3D2>Aug 2010</FONT><FONT =
face=3Dsans-serif=20
      size=3D3> </FONT>
    <TD><FONT face=3D"Courier New" size=3D2>Working Group Last Call for=20
      requirements</FONT><FONT face=3Dsans-serif size=3D3> </FONT>
  <TR vAlign=3Dtop>
    <TD><FONT face=3D"Courier New" size=3D2>Oct</FONT><FONT =
face=3Dsans-serif=20
      size=3D3> </FONT><FONT face=3D"Courier New" =
size=3D2><BR>2010</FONT><FONT=20
      face=3Dsans-serif size=3D3> </FONT>
    <TD><FONT face=3D"Courier New" size=3D2>Submit architecture survey =
to IESG as=20
      Informational document</FONT><FONT face=3Dsans-serif size=3D3> =
</FONT>
  <TR vAlign=3Dtop>
    <TD><FONT face=3D"Courier New" size=3D2>Oct 2010</FONT><FONT =
face=3Dsans-serif=20
      size=3D3> </FONT>
    <TD><FONT face=3D"Courier New" size=3D2>Submit requirements to IESG =
as=20
      Informational document</FONT><FONT face=3Dsans-serif size=3D3> =
</FONT>
  <TR vAlign=3Dtop>
    <TD><FONT face=3D"Courier New" size=3D2>Apr 2011</FONT><FONT =
face=3Dsans-serif=20
      size=3D3> </FONT>
    <TD><FONT face=3D"Courier New" size=3D2>Working Group Last Call for =
PPSP peer=20
      protocol</FONT><FONT face=3Dsans-serif size=3D3> </FONT>
  <TR vAlign=3Dtop>
    <TD><FONT face=3D"Courier New" size=3D2>Apr</FONT><FONT =
face=3Dsans-serif=20
      size=3D3> </FONT><FONT face=3D"Courier New" =
size=3D2><BR>2011</FONT><FONT=20
      face=3Dsans-serif size=3D3> </FONT>
    <TD><FONT face=3D"Courier New" size=3D2>Working Group Last Call for =
PPSP=20
      tracker protocol</FONT><FONT face=3Dsans-serif size=3D3> </FONT>
  <TR vAlign=3Dtop>
    <TD><FONT face=3D"Courier New" size=3D2>Aug 2011</FONT><FONT =
face=3Dsans-serif=20
      size=3D3> </FONT>
    <TD><FONT face=3D"Courier New" size=3D2>Submit PPSP peer protocol to =
IESG as=20
      Proposed Standard</FONT><FONT face=3Dsans-serif size=3D3> </FONT>
  <TR vAlign=3Dtop>
    <TD><FONT face=3D"Courier New" size=3D2>Aug 2011</FONT><FONT =
face=3Dsans-serif=20
      size=3D3> </FONT>
    <TD><FONT face=3D"Courier New" size=3D2>Submit PPSP tracker protocol =
to IESG=20
      as Proposed Standard</FONT><FONT face=3Dsans-serif size=3D3> =
</FONT>
  <TR vAlign=3Dtop>
    <TD><FONT face=3D"Courier New" size=3D2>Nov 2011</FONT><FONT =
face=3Dsans-serif=20
      size=3D3> </FONT>
    <TD><FONT face=3D"Courier New" size=3D2>Working Group Last Call of =
usage=20
      document</FONT><FONT face=3Dsans-serif size=3D3> </FONT>
  <TR vAlign=3Dtop>
    <TD><FONT face=3D"Courier New" size=3D2>Nov 2011</FONT><FONT =
face=3Dsans-serif=20
      size=3D3> </FONT>
    <TD><FONT face=3D"Courier New" size=3D2>Working Group Last Call of =
mobility=20
      BCP document</FONT><FONT face=3Dsans-serif size=3D3> </FONT>
  <TR vAlign=3Dtop>
    <TD><FONT face=3D"Courier New" size=3D2>Jan 2012</FONT><FONT =
face=3Dsans-serif=20
      size=3D3> </FONT>
    <TD><FONT face=3D"Courier New" size=3D2>Submit usage document to =
IESG as=20
      Informational document</FONT><FONT face=3Dsans-serif size=3D3> =
</FONT>
  <TR vAlign=3Dtop>
    <TD><FONT face=3D"Courier New" size=3D2>Jan 2012</FONT><FONT =
face=3Dsans-serif=20
      size=3D3> </FONT>
    <TD><FONT face=3D"Courier New" size=3D2>Submit mobility BCP document =
to IESG=20
      as Informational document</FONT><FONT face=3Dsans-serif size=3D3> =
</FONT>
  <TR vAlign=3Dtop>
    <TD><FONT face=3D"Courier New" size=3D2>Apr 2012</FONT><FONT =
face=3Dsans-serif=20
      size=3D3> </FONT>
    <TD><FONT face=3D"Courier New" size=3D2>Dissolve or re-charter=20
  </FONT></TD></TR></TBODY></TABLE><BR><FONT face=3DVerdana=20
size=3D2><BR><BR>&nbsp;</FONT>=20
<P>
<HR>
<FONT face=3DVerdana color=3D#c0c0c0 =
size=3D2><BR>zhangyunfei</FONT><FONT face=3DVerdana=20
size=3D2> </FONT><FONT face=3DVerdana color=3D#c0c0c0=20
size=3D2><BR>2009-12-26</FONT><FONT face=3DVerdana=20
size=3D2>_______________________________________________<BR>ppsp mailing =

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<DIV><FONT face=3DVerdana color=3D#0000ff size=3D2>Hi Lin,</FONT></DIV>
<DIV><FONT face=3DVerdana color=3D#0000ff size=3D2>&nbsp;&nbsp; Thanks for =
the=20
comments and the revision.I like your first suggestion on the expression an=
d=20
modify the sentence based on your version: <FONT face=3D"Courier New"=20
color=3D#000000><FONT face=3DVerdana>This protocol will define how PPSP pee=
rs=20
advertise data availability and exchange for augmenting the peer list.<FONT=
=20
color=3D#0000ff>Thanks again!</FONT></FONT></FONT></FONT></DIV>
<DIV><FONT face=3DVerdana color=3D#0000ff size=3D2>BR</FONT></DIV>
<DIV><FONT face=3DVerdana color=3D#0000ff size=3D2>Yunfei</FONT></DIV>
<DIV><FONT face=3DVerdana size=3D2></FONT>&nbsp;</DIV>
<DIV align=3Dleft>
<DIV align=3Dleft><FONT face=3DVerdana size=3D2>
<HR style=3D"WIDTH: 122px; HEIGHT: 2px" SIZE=3D2>
</FONT></DIV>
<DIV><FONT color=3D#c0c0c0><FONT face=3DVerdana size=3D2>zhangyunfei</FONT>=
</DIV>
<DIV><FONT face=3DVerdana size=3D2>2009-12-28</FONT></FONT></DIV></DIV>
<DIV><FONT face=3DVerdana size=3D2>
<HR>
</FONT></DIV>
<DIV><FONT face=3DVerdana><FONT size=3D2><STRONG>=B7=A2=BC=FE=C8=CB=A3=BA</=
STRONG> Xiao, Lin (NSN -=20
CN/Beijing)</FONT></FONT></DIV>
<DIV><FONT face=3DVerdana><FONT size=3D2><STRONG>=B7=A2=CB=CD=CA=B1=BC=E4=
=A3=BA</STRONG>=20
2009-12-28&nbsp;16:22:53</FONT></FONT></DIV>
<DIV><FONT face=3DVerdana><FONT size=3D2><STRONG>=CA=D5=BC=FE=C8=CB=A3=BA</=
STRONG> ext zhangyunfei;=20
liuhy @ uusee; meng.yu@zte.com.cn</FONT></FONT></DIV>
<DIV><FONT face=3DVerdana><FONT size=3D2><STRONG>=B3=AD=CB=CD=A3=BA</STRONG=
>=20
ppsp@ietf.org</FONT></FONT></DIV>
<DIV><FONT face=3DVerdana><FONT size=3D2><STRONG>=D6=F7=CC=E2=A3=BA</STRONG=
> RE: [ppsp] =B4=F0=B8=B4: Re:=20
ppsp revised charter proposal</FONT></FONT></DIV>
<DIV><FONT face=3DVerdana size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DVerdana size=3D2>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D430132807-28122009><FONT color=3D=
#0000ff>Hi=20
Yunfei,</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D430132807-28122009><FONT=20
color=3D#0000ff></FONT></SPAN>&nbsp;</DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D430132807-28122009><FONT color=3D=
#0000ff>To=20
define the ppsp peer protocol, The charter <SPAN class=3D430132807-28122009=
><FONT=20
color=3D#0000ff>writes: </FONT><FONT face=3D"Courier New" color=3D#000000>T=
his=20
protocol will define how PPSP peers advertise data availability and exchang=
e=20
neighbor peers.</FONT></SPAN></FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D430132807-28122009><FONT=20
color=3D#0000ff></FONT></SPAN>&nbsp;</DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D430132807-28122009><FONT color=3D=
#0000ff>I=20
think, it means a peer&nbsp;is required to exchange 2&nbsp;kinds of=20
information:&nbsp; the peer's won&nbsp;data availability,and other=20
peers&nbsp;connected with the peer who have related data. And the second=20
information is the useful extension to the peer list from the tracker.=20
Right?</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D430132807-28122009></SPAN><SPAN=20
class=3D430132807-28122009><FONT color=3D#0000ff></FONT></SPAN>&nbsp;</DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D430132807-28122009><FONT color=3D=
#0000ff>So,=20
the sentence could be changed as: This protocol will define how PPSP=20
peers&nbsp;exchange their won data availability and enrich their peer lists=
 at=20
the same time&nbsp;among peers.</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D430132807-28122009><FONT=20
color=3D#0000ff></FONT></SPAN>&nbsp;</DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D430132807-28122009><FONT=20
color=3D#0000ff>However, the question is, should&nbsp;we give such details =
about=20
which content should be exchanged in Charter stage? Or just to simply say "=
=20
define how to exchange useful information among peers"? </FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D430132807-28122009><FONT=20
color=3D#0000ff></FONT></SPAN>&nbsp;</DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D430132807-28122009><FONT=20
color=3D#0000ff>Br</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D430132807-28122009><FONT color=3D=
#0000ff>Xiao=20
Lin</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D430132807-28122009><FONT=20
face=3D"Courier New"></FONT></SPAN>&nbsp;</DIV><FONT color=3D#0000ff></FONT=
><BR>
<DIV class=3DOutlookMessageHeader lang=3Den-us dir=3Dltr align=3Dleft>
<HR tabIndex=3D-1>
<FONT face=3DTahoma size=3D2><B>From:</B> ppsp-bounces@ietf.org=20
[mailto:ppsp-bounces@ietf.org] <B>On Behalf Of </B>ext=20
zhangyunfei<BR><B>Sent:</B> Monday, December 28, 2009 3:18 PM<BR><B>To:</B>=
=20
liuhy @ uusee; meng.yu@zte.com.cn<BR><B>Cc:</B> ppsp@ietf.org<BR><B>Subject=
:</B>=20
Re: [ppsp] =B4=F0=B8=B4: Re: ppsp revised charter proposal<BR></FONT><BR></=
DIV>
<DIV></DIV>
<DIV><FONT face=3DVerdana color=3D#0000ff size=3D2>Thanks Harold for your=20
clarification from UUSee's experience.</FONT></DIV>
<DIV><FONT face=3DVerdana color=3D#0000ff size=3D2>One more question:People=
 may be=20
confused about the "peer list" in the tracker protocol and the "peer list"i=
n the=20
peer protocol since they are same literally. We may express it clearer abou=
t=20
this. Any good suggestions?</FONT></DIV>
<DIV><FONT face=3DVerdana color=3D#0000ff size=3D2>BR</FONT></DIV>
<DIV><FONT face=3DVerdana color=3D#0000ff size=3D2>Yunfei</FONT></DIV>
<DIV align=3Dleft>
<DIV align=3Dleft><FONT face=3DVerdana size=3D2>
<HR style=3D"WIDTH: 122px; HEIGHT: 2px" SIZE=3D2>
</FONT></DIV>
<DIV><FONT color=3D#c0c0c0><FONT face=3DVerdana size=3D2>zhangyunfei</FONT>=
</DIV>
<DIV><FONT face=3DVerdana size=3D2>2009-12-28</FONT></FONT></DIV></DIV>
<DIV><FONT face=3DVerdana size=3D2>
<HR>
</FONT></DIV>
<DIV><FONT face=3DVerdana><FONT size=3D2><STRONG>=B7=A2=BC=FE=C8=CB=A3=BA</=
STRONG> liuhy @=20
uusee</FONT></FONT></DIV>
<DIV><FONT face=3DVerdana><FONT size=3D2><STRONG>=B7=A2=CB=CD=CA=B1=BC=E4=
=A3=BA</STRONG>=20
2009-12-28&nbsp;15:17:58</FONT></FONT></DIV>
<DIV><FONT face=3DVerdana><FONT size=3D2><STRONG>=CA=D5=BC=FE=C8=CB=A3=BA</=
STRONG> meng.yu@zte.com.cn;=20
zhangyunfei</FONT></FONT></DIV>
<DIV><FONT face=3DVerdana><FONT size=3D2><STRONG>=B3=AD=CB=CD=A3=BA</STRONG=
> li.lichun1@zte.com.cn;=20
ppsp@ietf.org; ppsp-bounces@ietf.org</FONT></FONT></DIV>
<DIV><FONT face=3DVerdana><FONT size=3D2><STRONG>=D6=F7=CC=E2=A3=BA</STRONG=
> Re: =B4=F0=B8=B4: Re: [ppsp]=20
ppsp revised charter proposal</FONT></FONT></DIV>
<DIV><FONT face=3DVerdana size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DVerdana size=3D2>
<DIV><FONT face=3DVerdana color=3D#000080 size=3D2>Agree.</FONT></DIV>
<DIV><FONT color=3D#000080></FONT>&nbsp;</DIV>
<DIV><FONT color=3D#000080>"Peer list" is much clear than "neighbor=20
peers".</FONT></DIV>
<DIV><FONT color=3D#000080></FONT>&nbsp;</DIV>
<DIV><FONT color=3D#000080>Actually, peers usually exchanges the list of "u=
seful=20
list". Since connected peers either acquir resources or provide resources t=
o=20
each other. So, peers can do some filter work locally.</FONT></DIV>
<DIV><FONT face=3DVerdana color=3D#000080 size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DVerdana color=3D#000080 size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DVerdana color=3D#c0c0c0 size=3D2>2009-12-28 </FONT></DIV>=
<FONT=20
face=3DVerdana color=3D#000080 size=3D2>
<HR style=3D"WIDTH: 100px" align=3Dleft color=3D#b5c4df SIZE=3D1>
</FONT>
<DIV><FONT face=3DVerdana color=3D#c0c0c0 size=3D2><SPAN>
<DIV>
<DIV>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left"=20
align=3Dleft><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: =CB=CE=CC=E5">=C1=F5=
=BB=B3=D3=EE</SPAN><SPAN=20
lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: 'Arial','sans-serif'=
">=20
/&nbsp; Harold Liu<BR></SPAN><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: =CB=CE=CC=E5">=D3=C6=
=CA=D3=CD=F8</SPAN><SPAN=20
lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: 'Arial','sans-serif'=
">=20
CTO<BR></SPAN><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: =CB=CE=CC=E5">=B1=B1=
=BE=A9=D3=C6=CA=D3=BB=A5=B6=AF=BF=C6=BC=BC=D3=D0=CF=DE=B9=AB=CB=BE</SPAN><S=
PAN=20
lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: 'Arial','sans-serif'=
"><BR></SPAN><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: =CB=CE=CC=E5">=B5=D8=
=D6=B7=A3=BA=B1=B1=BE=A9=CA=D0=B6=AB=B3=C7=C7=F8=B6=AB=D6=B1=C3=C5=B1=B1=D0=
=A1=BD=D6=C7=E0=C1=FA=BA=FA=CD=AC</SPAN><SPAN=20
lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: 'Arial','sans-serif'=
">1</SPAN><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: =CB=CE=CC=E5">=BA=C5=
=B8=E8=BB=AA=B4=F3=CF=C3</SPAN><SPAN=20
lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: 'Arial','sans-serif'=
">9</SPAN><SPAN=20
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</SPAN><SPAN=20
lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: 'Arial','sans-serif'=
"><BR></SPAN><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: =CB=CE=CC=E5">=D3=CA=
=B1=E0=A3=BA</SPAN><SPAN=20
lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: 'Arial','sans-serif'=
">100007<BR></SPAN><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: =CB=CE=CC=E5">=B5=E7=
=BB=B0=A3=BA</SPAN><SPAN=20
lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: 'Arial','sans-serif'=
">+86-10-84186689<BR></SPAN><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: =CB=CE=CC=E5">=CA=D6=
=BB=FA=A3=BA</SPAN><SPAN=20
lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: 'Arial','sans-serif'=
">13901143864<o:p></o:p></SPAN></P>
<P class=3DMsoNormal style=3D"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left"=20
align=3Dleft><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: =CB=CE=CC=E5">=D3=CA=
=BC=FE=A3=BA</SPAN><SPAN=20
lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: 'Arial','sans-serif'=
"><A=20
href=3D"mailto:xuh@uusee.com"><SPAN=20
style=3D"COLOR: #a6a6a6">liuhy@uusee.com</SPAN></A><BR></SPAN><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: =CB=CE=CC=E5">=CD=F8=
=D6=B7=A3=BA</SPAN><SPAN=20
lang=3DEN-US=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: 'Arial','sans-serif'=
"><A=20
href=3D"http://www.uusee.com/"><SPAN=20
style=3D"COLOR: #a6a6a6">www.uusee.com</SPAN></A> </SPAN><SPAN lang=3DEN-US=
=20
style=3D"FONT-SIZE: 10pt; COLOR: #a6a6a6; FONT-FAMILY: 'Verdana','sans-seri=
f'"><o:p></o:p></SPAN></P>&nbsp;</DIV></DIV></SPAN></FONT></DIV>
<HR color=3D#b5c4df SIZE=3D1>

<DIV><FONT face=3DVerdana size=3D2><STRONG>=B7=A2=BC=FE=C8=CB=A3=BA</STRONG=
> meng.yu@zte.com.cn=20
</FONT></DIV>
<DIV><FONT face=3DVerdana size=3D2><STRONG>=B7=A2=CB=CD=CA=B1=BC=E4=A3=BA</=
STRONG> 2009-12-28&nbsp; 14:49:35=20
</FONT></DIV>
<DIV><FONT face=3DVerdana size=3D2><STRONG>=CA=D5=BC=FE=C8=CB=A3=BA</STRONG=
> zhangyunfei </FONT></DIV>
<DIV><FONT face=3DVerdana size=3D2><STRONG>=B3=AD=CB=CD=A3=BA</STRONG> li.l=
ichun1@zte.com.cn;=20
liuhy; ppsp@ietf.org; ppsp-bounces@ietf.org </FONT></DIV>
<DIV><FONT face=3DVerdana size=3D2><STRONG>=D6=F7=CC=E2=A3=BA</STRONG> =B4=
=F0=B8=B4: Re: [ppsp] ppsp revised=20
charter proposal </FONT></DIV>
<DIV><FONT face=3DVerdana size=3D2></FONT></DIV>
<DIV><FONT face=3DVerdana size=3D2><BR><FONT face=3Dsans-serif size=3D2>Yes=
, it may=20
arouse some problems. If PPSP want to do that, some lite security mechanism=
=20
maybe needed.</FONT> <BR><BR><FONT face=3Dsans-serif size=3D2>Besides that,=
 should=20
we change "</FONT><FONT face=3D"Courier New" size=3D2>exchange neighbor=20
peers</FONT><FONT face=3Dsans-serif size=3D2>" to "exchange peer lists info=
rmation=20
</FONT><FONT face=3Dsans-serif color=3D#c0c0c0 size=3D2>(owning some=20
resource)</FONT><FONT face=3Dsans-serif size=3D2>" so as to avoid the confu=
sion of=20
'neighbor'?</FONT> <BR><BR><BR><BR>
<TABLE width=3D"100%">
  <TBODY>
  <TR vAlign=3Dtop>
    <TD width=3D"26%"><FONT face=3Dsans-serif size=3D1><B>"zhangyunfei"=20
      &lt;zhangyunfei@chinamobile.com&gt;</B> </FONT><BR><FONT face=3Dsans-=
serif=20
      size=3D1>=B7=A2=BC=FE=C8=CB: &nbsp;ppsp-bounces@ietf.org</FONT>=20
      <P><FONT face=3Dsans-serif size=3D1>2009-12-28 14:23</FONT> </P>
    <TD width=3D"73%">
      <TABLE width=3D"100%">
        <TBODY>
        <TR vAlign=3Dtop>
          <TD>
            <DIV align=3Dright><FONT face=3Dsans-serif size=3D1>=CA=D5=BC=
=FE=C8=CB</FONT></DIV>
          <TD><FONT face=3Dsans-serif size=3D1>"li.lichun1@zte.com.cn"=20
            &lt;li.lichun1@zte.com.cn&gt;</FONT>=20
        <TR vAlign=3Dtop>
          <TD>
            <DIV align=3Dright><FONT face=3Dsans-serif size=3D1>=B3=AD=CB=
=CD</FONT></DIV>
          <TD><FONT face=3Dsans-serif size=3D1>"ppsp@ietf.org"=20
            &lt;ppsp@ietf.org&gt;, liuhy &lt;liuhy@uusee.com&gt;</FONT>=20
        <TR vAlign=3Dtop>
          <TD>
            <DIV align=3Dright><FONT face=3Dsans-serif size=3D1>=D6=F7=CC=
=E2</FONT></DIV>
          <TD><FONT face=3Dsans-serif size=3D1>Re: [ppsp] ppsp revised char=
ter=20
            proposal</FONT></TD></TR></TBODY></TABLE><BR>
      <TABLE>
        <TBODY>
        <TR vAlign=3Dtop>
          <TD>
          <TD></TD></TR></TBODY></TABLE><BR></TD></TR></TBODY></TABLE><BR><=
BR><BR><FONT=20
face=3DVerdana color=3Dblue size=3D2>Thanks Lichun.</FONT> <BR><FONT face=
=3DVerdana=20
color=3Dblue size=3D2>According to my understanding,peers exchange the neig=
bor peers=20
information,i.e. which peer remains connected and which pieces already have=
 been=20
downloaded. As for non-neigbor peers which it just receives from the tracke=
r, I=20
am really not sure about the effect of such exchange because such peers are=
=20
un-confirmed.</FONT> <BR><FONT face=3DVerdana color=3Dblue size=3D2>Is ther=
e anybody=20
who can tell us more about this point in practice?James?Harold?Omer?</FONT>=
=20
<BR><FONT face=3DVerdana color=3Dblue size=3D2>Thanks!</FONT> <BR><FONT=20
face=3Dsans-serif size=3D3>&nbsp;</FONT> <BR><FONT face=3DVerdana color=3Db=
lue=20
size=3D2>BR</FONT> <BR><FONT face=3DVerdana color=3Dblue size=3D2>Yunfei</F=
ONT>=20
<BR><FONT face=3Dsans-serif size=3D3>&nbsp;</FONT> <BR>
<HR>
<BR><FONT face=3DVerdana color=3D#c0c0c0 size=3D2>zhangyunfei</FONT> <BR><F=
ONT=20
face=3DVerdana color=3D#c0c0c0 size=3D2>2009-12-28</FONT> <BR>
<HR>
<BR><FONT face=3DVerdana size=3D2><B>=B7=A2=BC=FE=C8=CB=A3=BA</B> li.lichun=
1@zte.com.cn</FONT> <BR><FONT=20
face=3DVerdana size=3D2><B>=B7=A2=CB=CD=CA=B1=BC=E4=A3=BA</B> 2009-12-28 11=
:04:21</FONT> <BR><FONT=20
face=3DVerdana size=3D2><B>=CA=D5=BC=FE=C8=CB=A3=BA</B> zhangyunfei</FONT> =
<BR><FONT face=3DVerdana=20
size=3D2><B>=B3=AD=CB=CD=A3=BA</B> ppsp@ietf.org</FONT> <BR><FONT face=3DVe=
rdana size=3D2><B>=D6=F7=CC=E2=A3=BA</B>=20
Re: re: [ppsp] ppsp revised charter proposal</FONT> <BR><FONT face=3Dsans-s=
erif=20
size=3D3>&nbsp;</FONT> <BR><FONT face=3Dsans-serif size=3D2><BR>The charter=
 says=20
"</FONT><FONT face=3D"Courier New" size=3D2>exchange neighbor peers</FONT><=
FONT=20
face=3Dsans-serif size=3D2>". I think the peer list may include peers other=
 than=20
neighbors. Peers can also exchange neighbors of neighbors and non-neighbor =
peers=20
known from tracker. <BR><BR><BR>BR,</FONT><FONT face=3DVerdana size=3D2>=20
</FONT><FONT face=3Dsans-serif size=3D2><BR>Lichun</FONT><FONT face=3DVerda=
na=20
size=3D2><BR><BR><BR></FONT>
<TABLE width=3D"100%">
  <TBODY>
  <TR vAlign=3Dtop>
    <TD width=3D"48%"><FONT face=3Dsans-serif size=3D1><B>"zhangyunfei"=20
      &lt;zhangyunfei@chinamobile.com&gt;</B> </FONT>
      <P><FONT face=3Dsans-serif size=3D1>2009-12-28 10:13</FONT><FONT=20
      face=3Dsans-serif size=3D3> </FONT></P>
    <TD width=3D"51%"><BR>
      <TABLE width=3D"100%">
        <TBODY>
        <TR vAlign=3Dtop>
          <TD width=3D"12%">
            <DIV align=3Dright><FONT face=3Dsans-serif size=3D1>=CA=D5=BC=
=FE=C8=CB</FONT></DIV>
          <TD width=3D"87%"><FONT face=3Dsans-serif size=3D1>"li.lichun1@zt=
e.com.cn"=20
            &lt;li.lichun1@zte.com.cn&gt;</FONT><FONT face=3Dsans-serif siz=
e=3D3>=20
            </FONT>
        <TR vAlign=3Dtop>
          <TD>
            <DIV align=3Dright><FONT face=3Dsans-serif size=3D1>=B3=AD=CB=
=CD</FONT></DIV>
          <TD><FONT face=3Dsans-serif size=3D1>"ppsp@ietf.org"=20
            &lt;ppsp@ietf.org&gt;</FONT><FONT face=3Dsans-serif size=3D3> <=
/FONT>
        <TR vAlign=3Dtop>
          <TD>
            <DIV align=3Dright><FONT face=3Dsans-serif size=3D1>=D6=F7=CC=
=E2</FONT></DIV>
          <TD><FONT face=3Dsans-serif size=3D1>Re: re: [ppsp] ppsp revised =
charter=20
            proposal</FONT></TD></TR></TBODY></TABLE><BR><BR>
      <TABLE width=3D"100%">
        <TBODY>
        <TR vAlign=3Dtop>
          <TD width=3D"49%">
          <TD=20
width=3D"50%"></TD></TR></TBODY></TABLE><BR></TD></TR></TBODY></TABLE><BR><=
FONT=20
face=3DVerdana size=3D2><BR><BR></FONT><FONT face=3DVerdana color=3Dblue=20
size=3D2><BR>Yes,you are right,Lichun. <BR>As suggested in the BOF and mail=
ing=20
list,peer gossip(including exchange of peer list)can make peers know more p=
eers=20
and alleviate the burden of the tracker.</FONT><FONT face=3DVerdana size=3D=
2>=20
</FONT><FONT face=3Dsans-serif size=3D3><BR></FONT><FONT face=3DVerdana=20
size=3D2>&nbsp;</FONT><FONT face=3DVerdana color=3Dblue size=3D2><BR>BR</FO=
NT><FONT=20
face=3DVerdana size=3D2> </FONT><FONT face=3DVerdana color=3Dblue=20
size=3D2><BR>Yunfei</FONT><FONT face=3DVerdana size=3D2> </FONT><FONT face=
=3Dsans-serif=20
size=3D3><BR></FONT><FONT face=3DVerdana size=3D2>&nbsp;<BR></FONT>
<HR>
<FONT face=3DVerdana color=3D#c0c0c0 size=3D2><BR>zhangyunfei</FONT><FONT f=
ace=3DVerdana=20
size=3D2> </FONT><FONT face=3DVerdana color=3D#c0c0c0=20
size=3D2><BR>2009-12-28</FONT><FONT face=3DVerdana size=3D2> <BR></FONT>
<HR>
<FONT face=3DVerdana size=3D2><B><BR>=B7=A2=BC=FE=C8=CB=A3=BA</B> li.lichun=
1@zte.com.cn <B><BR>=B7=A2=CB=CD=CA=B1=BC=E4=A3=BA</B>=20
2009-12-28 09:36:31 <B><BR>=CA=D5=BC=FE=C8=CB=A3=BA</B> zhangyunfei <B><BR>=
=B3=AD=CB=CD=A3=BA</B> ppsp@ietf.org;=20
ppsp-bounces@ietf.org <B><BR>=D6=F7=CC=E2=A3=BA</B> re: [ppsp] ppsp revised=
 charter proposal=20
</FONT><FONT face=3Dsans-serif size=3D3><BR></FONT><FONT face=3DVerdana=20
size=3D2>&nbsp;</FONT><FONT face=3Dsans-serif size=3D2><BR><BR>Hi, yunfei.<=
/FONT><FONT=20
face=3DVerdana size=3D2> </FONT><FONT face=3Dsans-serif size=3D2><BR>Peers =
can exchange=20
peer lists, right?</FONT><FONT face=3DVerdana size=3D2> </FONT><FONT face=
=3Dsans-serif=20
size=3D2><BR><BR><BR>Best regards,<BR>Lichun Li</FONT><FONT face=3DVerdana =

size=3D2><BR><BR></FONT>
<TABLE width=3D"100%">
  <TBODY>
  <TR vAlign=3Dtop>
    <TD width=3D"54%"><FONT face=3Dsans-serif size=3D1><B>"zhangyunfei"=20
      &lt;zhangyunfei@chinamobile.com&gt;</B> <BR>=B7=A2=BC=FE=C8=CB:=20
      &nbsp;ppsp-bounces@ietf.org</FONT><FONT face=3Dsans-serif size=3D3> <=
/FONT>
      <P><FONT face=3Dsans-serif size=3D1>2009-12-26 16:52</FONT><FONT=20
      face=3Dsans-serif size=3D3> </FONT></P>
    <TD width=3D"45%"><BR>
      <TABLE width=3D"100%">
        <TBODY>
        <TR vAlign=3Dtop>
          <TD width=3D"14%">
            <DIV align=3Dright><FONT face=3Dsans-serif size=3D1>=CA=D5=BC=
=FE=C8=CB</FONT></DIV>
          <TD width=3D"85%"><FONT face=3Dsans-serif size=3D1>"ppsp@ietf.org=
"=20
            &lt;ppsp@ietf.org&gt;</FONT><FONT face=3Dsans-serif size=3D3> <=
/FONT>
        <TR vAlign=3Dtop>
          <TD>
            <DIV align=3Dright><FONT face=3Dsans-serif size=3D1>=B3=AD=CB=
=CD</FONT></DIV>
          <TD>
        <TR vAlign=3Dtop>
          <TD>
            <DIV align=3Dright><FONT face=3Dsans-serif size=3D1>=D6=F7=CC=
=E2</FONT></DIV>
          <TD><FONT face=3Dsans-serif size=3D1>[ppsp] ppsp revised charter =

            proposal</FONT></TD></TR></TBODY></TABLE><BR><FONT face=3Dsans-=
serif=20
      size=3D3><BR></FONT><BR>
      <TABLE width=3D"100%">
        <TBODY>
        <TR vAlign=3Dtop>
          <TD width=3D"49%">
          <TD=20
width=3D"50%"></TD></TR></TBODY></TABLE><BR></TD></TR></TBODY></TABLE><BR><=
FONT=20
face=3DVerdana size=3D2><BR><BR></FONT><FONT face=3D=CB=CE=CC=E5 size=3D3><=
BR></FONT><FONT=20
face=3DVerdana size=3D2><BR>Dear all, </FONT>
<P><FONT face=3DVerdana size=3D2>&nbsp; &nbsp;The latest version of PPSP ch=
arter is=20
attached.Welcome to comment on this.I guess many of you guys are enjoying t=
he=20
Christmas holiday.Merry X'mas and happy new year!Wish to hear your valuable=
=20
suggestions in the beginning of 2010.:) </FONT>
<P><FONT face=3DVerdana size=3D2>&nbsp; &nbsp;Hope PPSP can have a great de=
velopment=20
in the new year with all of your participation and contribution. </FONT>
<P><FONT face=3DVerdana size=3D2>The main modifications are: </FONT>
<P><FONT face=3DVerdana size=3D2>1)Para 2: </FONT>
<P><FONT face=3DVerdana size=3D2>a)wish to make it better understood about =
what the=20
tracker protocol and the peer protocol differ in and reply the BOF comments=
 that=20
the two protocols may be a single one; </FONT>
<P><FONT face=3DVerdana size=3D2>b)Add the NAT issue raised in the BOF; </F=
ONT>
<P><FONT face=3DVerdana size=3D2>2)Para3: </FONT>
<P><FONT face=3DVerdana size=3D2>a) Para3-</FONT><FONT face=3DArial size=3D=
2>bullet=20
4,adding the gossip communication in peer protocol as discussed in the mail=
ing=20
list;</FONT><FONT face=3DVerdana size=3D2> </FONT>
<P><FONT face=3DArial size=3D2>b)Para3-bullet7, deleted as suggested by Lar=
s that=20
optional part can be detered until we think it clearer;</FONT><FONT face=3D=
Verdana=20
size=3D2> </FONT>
<P><FONT face=3DArial size=3D2>3)Para4, adding LEDBAT as reference raised i=
n the=20
BOF.</FONT><FONT face=3DVerdana size=3D2> </FONT>
<P><FONT face=3DArial size=3D2>4)Para5,deleting privay raised in the=20
BOF.</FONT><FONT face=3DVerdana size=3D2> </FONT>
<P><FONT face=3DArial size=3D2>5)Para6:</FONT><FONT face=3DVerdana size=3D2=
> </FONT>
<P><FONT face=3DArial size=3D2>a)bullet1:Adding the description of consider=
ing the=20
NAT traversal and the multiple stream senario as discussed in the BOF and=20
mailing list.</FONT><FONT face=3DVerdana size=3D2> </FONT>
<P><FONT face=3DVerdana size=3D2>BR </FONT>
<P><FONT face=3DVerdana size=3D2>Yunfei </FONT>
<P><FONT face=3DVerdana=20
size=3D2>******************************************************************=
*******=20
</FONT><FONT face=3D"Courier New" size=3D2><B><BR>Description of PPSP Worki=
ng=20
Group:</B></FONT><FONT face=3DVerdana size=3D2> </FONT><FONT face=3D"Courie=
r New"=20
size=3D2><BR>The Peer-to-Peer (P2P) Streaming Protocol working group (PPSP =
WG) is=20
chartered to develop standard signaling protocols (called PPSP protocols) f=
or=20
multiple types of entities (e.g. intelligent endpoints, caches, content=20
distribution network nodes, and/or other edge devices) to participate in P2=
P=20
streaming systems in both fixed and mobile Internet.</FONT><FONT face=3DVer=
dana=20
size=3D2> </FONT><FONT face=3D"Courier New" size=3D2><BR><BR>There are two =
kinds of=20
components in PPSP protocols, i.e., =A1=B0trackers=A1=B1 and =A1=B0peers=A1=
=B1. PPSP protocols=20
include the PPSP tracker protocol =A8C a signaling protocol between =A1=B0t=
rackers=A1=B1 and=20
=A1=B0peers=A1=B1, and the PPSP peer protocol =A8C a signaling protocol amo=
ng =A1=B0peers=A1=B1. The=20
two protocols ensure peers to get streaming data within certain time=20
constraints. PPSP tracker protocol deals with the initial and periodical=20
exchanges between tracker and peers: initially the peers contact the tracke=
r to=20
report their static information (like IP address, NAT types and other usefu=
l=20
things) and get a list of peers for a specific channel or streaming file fr=
om=20
the tracker; periodically the tracker maintains lists of participating peer=
s=20
according to the report from the peers about their status information. PPSP=
 peer=20
protocol deals with the exchanges among peers. The peer exchanges its data =

availability and neighbor peer information with other peers. With these=20
information, it can connect with these peers for further data downloading. =

&nbsp;</FONT><FONT face=3DVerdana size=3D2> <BR></FONT><FONT face=3D"Courie=
r New"=20
size=3D2><BR>This WG's primary tasks are to produce:<BR>1. A =A1=B0problem =
statement=A1=B1=20
document describing the problems, incentives, and scope of developing the P=
PSP=20
protocols, as well as common terminologies and concepts.</FONT><FONT=20
face=3DVerdana size=3D2> <BR></FONT><FONT face=3D"Courier New" size=3D2><BR=
>2. A=20
=A1=B0requirements=A1=B1 document listing the requirements on the designed =
PPSP protocols=20
(e.g., general functionality and performance requirements of PPSP protocols=
 or=20
basic types of information that PPSP protocols should communicate to facili=
tate=20
P2P streaming).</FONT><FONT face=3DVerdana size=3D2> </FONT><FONT face=3D"C=
ourier New"=20
size=3D2><BR><BR>3. An "architectural survey" document explaining the curre=
nt P2P=20
streaming architectures, in particular tracker-based P2P streaming, and key=
=20
issues in best practice.</FONT><FONT face=3DVerdana size=3D2> </FONT><FONT =

face=3D"Courier New" size=3D2><BR><BR>4. A proposed standard defining the P=
PSP peer=20
protocol. This protocol will define how PPSP peers advertise data availabil=
ity=20
and exchange neighbor peers. The protocol will also define the requests and=
=20
responses of data chunks among PPSP peers.</FONT><FONT face=3DVerdana size=
=3D2>=20
<BR></FONT><FONT face=3D"Courier New" size=3D2><BR>5. A proposed standard d=
efining=20
the PPSP tracker protocol. This protocol will define how PPSP peers inform =
and=20
request information from PPSP trackers and how PPSP trackers reply to the=20
requests.</FONT><FONT face=3DVerdana size=3D2> <BR></FONT><FONT face=3D"Cou=
rier New"=20
size=3D2><BR>6. A =A1=B0usage document=A1=B1 explaining how the protocols d=
efined above,=20
along with existing IETF protocols, such as RELAOD, ALTO and RTSP, can=20
inter-operate; and how they may be integrated together to produce complete =
P2P=20
streaming systems.</FONT><FONT face=3DVerdana size=3D2> <BR></FONT><FONT=20
face=3D"Courier New" size=3D2><BR><BR>The work planned for the PPSP WG is d=
istinct=20
from, but requires close participation with, work in other IETF WGs,=20
particularly P2PSIP, ALTO,LEDBAT and MMUSIC. The PPSP WG assumes that it ca=
nnot=20
modify baseline P2PSIP, ALTO, LEDBAT and MMUSIC behaviors. If PPSP determin=
es=20
that extensions to P2PSIP, ALTO,LEDBAT and MMUSIC are needed, PPSP will see=
k to=20
define such extensions and present to the respective working groups.</FONT>=
<FONT=20
face=3DVerdana size=3D2> </FONT><FONT face=3D"Courier New" size=3D2><BR><BR=
>The design=20
of PPSP has to consider security issues. The protocol document will contain=
 a=20
complete description of the security issues that PPSP should=20
address.</FONT><FONT face=3DVerdana size=3D2> <BR></FONT><FONT face=3D"Cour=
ier New"=20
size=3D2><BR>The following topics are excluded from this WG's scope:<BR>1. =

Transport mechanisms for data transmission among PPSP peers, e.g. using TCP=
 or=20
UDP, unicast or multicast, etc. However the &nbsp;design &nbsp;of &nbsp;PPS=
P=20
&nbsp;will &nbsp;consider how it can be combined with the transport mechani=
sms,=20
including NAT traversal problem. The design of PPSP will also consider the =

scenario of transmission of multiple streams &nbsp;(layered &nbsp;media).=20
&nbsp;This includes considering various media descriptions (e.g. data chunk=
=20
description in peer protocol) after investigating different media coding=20
mechanisms (e.g. SVC, MDC) to incorporate their features in the=20
protocol.</FONT><FONT face=3DVerdana size=3D2> </FONT><FONT face=3D"Courier=
 New"=20
size=3D2><BR><BR>2. Network coding mechanisms in P2P streaming. Network cod=
ing may=20
be used in P2P streaming, but its support is beyond the scope of current=20
charter.</FONT><FONT face=3DVerdana size=3D2> <BR></FONT><FONT face=3D"Cour=
ier New"=20
size=3D2><BR>3. Play-out mechanisms including streaming control (e.g., paus=
e,=20
fast-forward, and rewind).</FONT><FONT face=3DVerdana size=3D2> <BR></FONT>=
<FONT=20
face=3D"Courier New" size=3D2><BR>4. Algorithms that may be different in di=
fferent=20
deployments (e.g., chunk selection, local storage strategies).</FONT><FONT =

face=3DVerdana size=3D2> <BR></FONT><FONT face=3D"Courier New" size=3D2><BR=
>5. Research=20
type questions related to P2P streaming. This WG will instead forward such =

questions to the IRTF P2PRG or other RG as appropriate. Examples include ca=
che=20
management.</FONT><FONT face=3DVerdana size=3D2> </FONT><FONT face=3D"Couri=
er New"=20
size=3D2><B><BR>Goals and Milestones:</B></FONT><FONT face=3DVerdana size=
=3D2> </FONT>
<P>
<TABLE width=3D"100%" border=3D4>
  <TBODY>
  <TR vAlign=3Dtop>
    <TD width=3D"13%"><FONT face=3D"Courier New" size=3D2>Apr 2010</FONT><F=
ONT=20
      face=3Dsans-serif size=3D3> </FONT>
    <TD width=3D"86%"><FONT face=3D"Courier New" size=3D2>Working Group Las=
t Call=20
      for problem statement</FONT><FONT face=3Dsans-serif size=3D3> </FONT>
  <TR vAlign=3Dtop>
    <TD><FONT face=3D"Courier New" size=3D2>Jun 2010</FONT><FONT face=3Dsan=
s-serif=20
      size=3D3> </FONT>
    <TD><FONT face=3D"Courier New" size=3D2>Submit problem statement to IES=
G as=20
      Informational document</FONT><FONT face=3Dsans-serif size=3D3> </FONT>
  <TR vAlign=3Dtop>
    <TD><FONT face=3D"Courier New" size=3D2>Aug 2010</FONT><FONT face=3Dsan=
s-serif=20
      size=3D3> </FONT>
    <TD><FONT face=3D"Courier New" size=3D2>Working Group Last Call for=20
      architecture survey</FONT><FONT face=3Dsans-serif size=3D3> </FONT>
  <TR vAlign=3Dtop>
    <TD><FONT face=3D"Courier New" size=3D2>Aug 2010</FONT><FONT face=3Dsan=
s-serif=20
      size=3D3> </FONT>
    <TD><FONT face=3D"Courier New" size=3D2>Working Group Last Call for=20
      requirements</FONT><FONT face=3Dsans-serif size=3D3> </FONT>
  <TR vAlign=3Dtop>
    <TD><FONT face=3D"Courier New" size=3D2>Oct</FONT><FONT face=3Dsans-ser=
if=20
      size=3D3> </FONT><FONT face=3D"Courier New" size=3D2><BR>2010</FONT><=
FONT=20
      face=3Dsans-serif size=3D3> </FONT>
    <TD><FONT face=3D"Courier New" size=3D2>Submit architecture survey to I=
ESG as=20
      Informational document</FONT><FONT face=3Dsans-serif size=3D3> </FONT>
  <TR vAlign=3Dtop>
    <TD><FONT face=3D"Courier New" size=3D2>Oct 2010</FONT><FONT face=3Dsan=
s-serif=20
      size=3D3> </FONT>
    <TD><FONT face=3D"Courier New" size=3D2>Submit requirements to IESG as =

      Informational document</FONT><FONT face=3Dsans-serif size=3D3> </FONT>
  <TR vAlign=3Dtop>
    <TD><FONT face=3D"Courier New" size=3D2>Apr 2011</FONT><FONT face=3Dsan=
s-serif=20
      size=3D3> </FONT>
    <TD><FONT face=3D"Courier New" size=3D2>Working Group Last Call for PPS=
P peer=20
      protocol</FONT><FONT face=3Dsans-serif size=3D3> </FONT>
  <TR vAlign=3Dtop>
    <TD><FONT face=3D"Courier New" size=3D2>Apr</FONT><FONT face=3Dsans-ser=
if=20
      size=3D3> </FONT><FONT face=3D"Courier New" size=3D2><BR>2011</FONT><=
FONT=20
      face=3Dsans-serif size=3D3> </FONT>
    <TD><FONT face=3D"Courier New" size=3D2>Working Group Last Call for PPS=
P=20
      tracker protocol</FONT><FONT face=3Dsans-serif size=3D3> </FONT>
  <TR vAlign=3Dtop>
    <TD><FONT face=3D"Courier New" size=3D2>Aug 2011</FONT><FONT face=3Dsan=
s-serif=20
      size=3D3> </FONT>
    <TD><FONT face=3D"Courier New" size=3D2>Submit PPSP peer protocol to IE=
SG as=20
      Proposed Standard</FONT><FONT face=3Dsans-serif size=3D3> </FONT>
  <TR vAlign=3Dtop>
    <TD><FONT face=3D"Courier New" size=3D2>Aug 2011</FONT><FONT face=3Dsan=
s-serif=20
      size=3D3> </FONT>
    <TD><FONT face=3D"Courier New" size=3D2>Submit PPSP tracker protocol to=
 IESG=20
      as Proposed Standard</FONT><FONT face=3Dsans-serif size=3D3> </FONT>
  <TR vAlign=3Dtop>
    <TD><FONT face=3D"Courier New" size=3D2>Nov 2011</FONT><FONT face=3Dsan=
s-serif=20
      size=3D3> </FONT>
    <TD><FONT face=3D"Courier New" size=3D2>Working Group Last Call of usag=
e=20
      document</FONT><FONT face=3Dsans-serif size=3D3> </FONT>
  <TR vAlign=3Dtop>
    <TD><FONT face=3D"Courier New" size=3D2>Nov 2011</FONT><FONT face=3Dsan=
s-serif=20
      size=3D3> </FONT>
    <TD><FONT face=3D"Courier New" size=3D2>Working Group Last Call of mobi=
lity=20
      BCP document</FONT><FONT face=3Dsans-serif size=3D3> </FONT>
  <TR vAlign=3Dtop>
    <TD><FONT face=3D"Courier New" size=3D2>Jan 2012</FONT><FONT face=3Dsan=
s-serif=20
      size=3D3> </FONT>
    <TD><FONT face=3D"Courier New" size=3D2>Submit usage document to IESG a=
s=20
      Informational document</FONT><FONT face=3Dsans-serif size=3D3> </FONT>
  <TR vAlign=3Dtop>
    <TD><FONT face=3D"Courier New" size=3D2>Jan 2012</FONT><FONT face=3Dsan=
s-serif=20
      size=3D3> </FONT>
    <TD><FONT face=3D"Courier New" size=3D2>Submit mobility BCP document to=
 IESG=20
      as Informational document</FONT><FONT face=3Dsans-serif size=3D3> </F=
ONT>
  <TR vAlign=3Dtop>
    <TD><FONT face=3D"Courier New" size=3D2>Apr 2012</FONT><FONT face=3Dsan=
s-serif=20
      size=3D3> </FONT>
    <TD><FONT face=3D"Courier New" size=3D2>Dissolve or re-charter=20
  </FONT></TD></TR></TBODY></TABLE><BR><FONT face=3DVerdana=20
size=3D2><BR><BR>&nbsp;</FONT>=20
<P>
<HR>
<FONT face=3DVerdana color=3D#c0c0c0 size=3D2><BR>zhangyunfei</FONT><FONT f=
ace=3DVerdana=20
size=3D2> </FONT><FONT face=3DVerdana color=3D#c0c0c0=20
size=3D2><BR>2009-12-26</FONT><FONT face=3DVerdana=20
size=3D2>=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=
=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=
<BR>ppsp mailing=20
list<BR>ppsp@ietf.org<BR>https://www.ietf.org/mailman/listinfo/ppsp<BR><BR>=
<BR>--------------------------------------------------------<BR>ZTE=20
Information Security Notice: The information contained in this mail is sole=
ly=20
property of the sender's organization. This mail communication is confident=
ial.=20
Recipients named above are obligated to maintain secrecy and are not permit=
ted=20
to disclose the contents of this communication to others.<BR>This email and=
 any=20
files transmitted with it are confidential and intended solely for the use =
of=20
the individual or entity to whom they are addressed. If you have received t=
his=20
email in error please notify the originator of the message. Any views expre=
ssed=20
in this message are those of the individual sender.<BR>This message has bee=
n=20
scanned for viruses and Spam by ZTE Anti-Spam system.<BR><BR></FONT><BR><FO=
NT=20
face=3DVerdana=20
size=3D2>--------------------------------------------------------<BR>ZTE=20
Information Security Notice: The information contained in this mail is sole=
ly=20
property of the sender's organization. This mail communication is confident=
ial.=20
Recipients named above are obligated to maintain secrecy and are not permit=
ted=20
to disclose the contents of this communication to others.<BR>This email and=
 any=20
files transmitted with it are confidential and intended solely for the use =
of=20
the individual or entity to whom they are addressed. If you have received t=
his=20
email in error please notify the originator of the message. Any views expre=
ssed=20
in this message are those of the individual sender.<BR>This message has bee=
n=20
scanned for viruses and Spam by ZTE Anti-Spam system.<BR></FONT><FONT=20
size=3D2><TT>=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=
=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=
=5F=5F<BR>ppsp mailing=20
list<BR>ppsp@ietf.org<BR>https://www.ietf.org/mailman/listinfo/ppsp<BR></TT=
></FONT><BR></FONT></DIV></FONT></DIV></FONT></DIV></BODY></HTML>

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From guyingjie@huawei.com  Thu Dec 31 00:40:49 2009
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Date: Thu, 31 Dec 2009 16:40:16 +0800
From: "Y.J. Gu" <guyingjie@huawei.com>
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Subject: [ppsp] Happy New Year!
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Hi all,
Tomorrow is the first day of 2010, the beginning of a new year.
Wish all of you have a Happy New Year and hope PPSP achieve its milestones
and targets.
^_^
 
 

Regards

Yingjie Gu


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<DIV dir=ltr align=left><FONT face="Times New Roman" color=#0000ff size=5><SPAN 
class=940183508-31122009></SPAN></FONT><FONT face="Times New Roman" 
color=#0000ff size=5><SPAN class=940183508-31122009>Hi all,</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face="Times New Roman" color=#0000ff size=5><SPAN 
class=940183508-31122009>Tomorrow is the first day of 2010,&nbsp;the beginning 
of a new year.</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face="Times New Roman" color=#0000ff size=5><SPAN 
class=940183508-31122009>Wish all of you have a Happy New Year and hope 
PPSP&nbsp;achieve its milestones and targets.</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face="Times New Roman" color=#0000ff size=5><SPAN 
class=940183508-31122009>^_^</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face="Times New Roman" color=#0000ff size=5><SPAN 
class=940183508-31122009></SPAN></FONT>&nbsp;</DIV>
<DIV dir=ltr align=left><FONT face="Times New Roman" color=#0000ff size=5><SPAN 
class=940183508-31122009></SPAN></FONT>&nbsp;</DIV>
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style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%; FONT-FAMILY: &#23435;&#20307;; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 10.0pt; mso-bidi-font-family: Arial"><FONT 
size=4>Regards</FONT></SPAN></P>
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style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt"><FONT 
size=4>Yingjie Gu</FONT></SPAN></P></DIV></BODY></HTML>

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--=====003_Dragon353017640540_=====--

