
From alexandru.petrescu@gmail.com  Mon Jan  6 01:24:37 2014
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Date: Mon, 06 Jan 2014 10:24:19 +0100
From: Alexandru Petrescu <alexandru.petrescu@gmail.com>
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To: Alison Chaiken <alison@she-devel.com>, "its@ietf.org" <its@ietf.org>
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Subject: Re: [geonet/its] terminology (was: Attempt to provide unified view of email discussions)
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Le 23/12/2013 05:42, Alison Chaiken a écrit :
> http://etherpad.tools.ietf.org:9000/p/geonet-charter
>
> Still a work in progress, obviously.    Please amend the contents if
> you think the venue is a useful one for discussion.
>
> I started to make a unified Terminology based on contributions from
> Georgios, Thierry. Dick, Knut, Brad, Alex and John.    To the extent
> that FCC, ETSI, ISO and IEEE definitions are compatible, we should
> try to base any new definitions on them, and not change the meanings
> of the terms they use.
>

Alison,

Thanks for the update.

I think the terminology section at that URL is a good start.

Some terms are subject to debate.  For example, what does this mean?
"Communications zone. The service area associated with an individual
  fixed Roadside Unit (RSU). The communications zone is determined based
  on the RSU equipment class specified in section 90.375."

Is it something like the range of an RSU? For example, if it used WiFi
then the range would be half a sphere of radius 50meter.

And -
"Control station. An Operational Fixed Station, the transmissions of
  which are used to control automatically the emissions or operation of
  another radio station at a specified location."
- this is a new concept to me, I dont see how it would materialize?  Is
it something like a 'management Server' which pushes configuration data
to a radio station with maybe SNMP/OpenFlow?

On another hand, there may be a need of a term similar to RSU, but which
is not related to vehicles.  Some fixed station that is attached to a
particular geographical area populated by entities which are not
vehicles (maybe a hangar of goods, for goods tracking).

Alex



From karagian@cs.utwente.nl  Mon Jan  6 01:39:17 2014
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From: <karagian@cs.utwente.nl>
To: <farinacci@gmail.com>, <its@ietf.org>
Thread-Topic: [geonet/its] A possible geonet use-case
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Date: Mon, 6 Jan 2014 09:38:57 +0000
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Subject: Re: [geonet/its] A possible geonet use-case
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Hi Dino,

Thanks for the email and sorry for the delay!

I assume that the use case that you describe uses the LISP architecture and=
 concepts, where according to RFC 6830:

"Routers continue to forward packets based on IP destination
   addresses.  When a packet is LISP encapsulated, these addresses are
   referred to as Routing Locators (RLOCs).  Most routers along a path
   between two hosts will not change; they continue to perform routing/
   forwarding lookups on the destination addresses.  For routers between
   the source host and the ITR as well as routers from the ETR to the
   destination host, the destination address is an EID.  For the routers
   between the ITR and the ETR, the destination address is an RLOC."


What is missing from your use case description is the fact that the End-sys=
tems (hosts) might not know the EID addresses.
What these end-systems could know is a geographic area where information ne=
eds to be sent to. So the end-system will need to have a way of translating=
 the geographical area to EIDs, in addition to the LISP EID-to-RLOC Databas=
e.
How will you integrate this point into your use case description.


Best regards,
Georgios


From: its [mailto:its-bounces@ietf.org] On Behalf Of Dino Farinacci
Sent: zaterdag 14 december 2013 19:59
To: its@ietf.org
Subject: [geonet/its] A possible geonet use-case

Folks, the chair of the 'its' BOF asked me to repost this use-case. I will =
try to describe it in a solution agnostic way. So apologize in advance for =
the slide that reads LISP on it.

The use-case described in the slide is a control-plane use-case only. There=
 is no packet routing involved.

It is a way to use your existing network infrastructure investment and get =
more functionality out of it. Here is the basic idea:

(1) What you want to track has an IP address. It can be an opaque IP addres=
s and certainly not a Provider-Assigned IP address.

(2) The routers are configured with geo-coordinates (they are not required =
to have GPS receivers) of their physical location.

(3) When the tracked device appears to these routers, the IP address of the=
 tracked device is associated with one more geo-coordinates of the routers.

(4) The routers can put this information in various types of databases.

One could see how a data-plane application could also extend this use-case.

Thanks,
Dino


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<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;">Hi Dino,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">Thanks for the email and=
 sorry for the delay!<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;"><o:p>&nbsp;</o:p></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">I assume that the use ca=
se that you describe uses the LISP architecture and concepts, where accordi=
ng to RFC 6830:<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;"><o:p>&nbsp;</o:p></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">&#8220;Routers continue =
to forward packets based on IP destination<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">&nbsp;&nbsp; addresses.&=
nbsp; When a packet is LISP encapsulated, these addresses are<o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">&nbsp;&nbsp; referred to=
 as Routing Locators (RLOCs).&nbsp; Most routers along a path<o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">&nbsp;&nbsp; between two=
 hosts will not change; they continue to perform routing/<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">&nbsp;&nbsp; forwarding =
lookups on the destination addresses.&nbsp; For routers between<o:p></o:p><=
/span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">&nbsp;&nbsp; the source =
host and the ITR as well as routers from the ETR to the<o:p></o:p></span></=
p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">&nbsp;&nbsp; destination=
 host, the destination address is an EID.&nbsp; For the routers<o:p></o:p><=
/span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">&nbsp;&nbsp; between the=
 ITR and the ETR, the destination address is an RLOC.&#8221;<o:p></o:p></sp=
an></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;"><o:p>&nbsp;</o:p></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;"><o:p>&nbsp;</o:p></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">What is missing from you=
r use case description is the fact that the
</span><span lang=3D"EN-GB">End-systems (hosts) might not know the EID addr=
esses. <o:p>
</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB">What these end-systems could kn=
ow is a geographic area where information needs to be sent to. So the end-s=
ystem will need to have a way of translating the geographical area to EIDs,=
 in addition to the LISP EID-to-RLOC
 Database.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB">How will you integrate this poi=
nt into your use case description.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;"><o:p>&nbsp;</o:p></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">Best regards,<o:p></o:p>=
</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">Georgios<o:p></o:p></spa=
n></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;"><o:p>&nbsp;</o:p></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<div style=3D"border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm =
4.0pt">
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"EN-US" style=3D"font-size:10.0pt;fo=
nt-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span =
lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,&qu=
ot;sans-serif&quot;"> its [mailto:its-bounces@ietf.org]
<b>On Behalf Of </b>Dino Farinacci<br>
<b>Sent:</b> zaterdag 14 december 2013 19:59<br>
<b>To:</b> its@ietf.org<br>
<b>Subject:</b> [geonet/its] A possible geonet use-case<o:p></o:p></span></=
p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Folks, the chair of the 'its' BOF asked me to repost=
 this use-case. I will try to describe it in a solution agnostic way. So ap=
ologize in advance for the slide that reads LISP on it.<o:p></o:p></p>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">The use-case described in the slide is a control-pla=
ne use-case only. There is no packet routing involved.<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">It is a way to use your existing network infrastruct=
ure investment and get more functionality out of it. Here is the basic idea=
:<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">(1) What you want to track has an IP address. It can=
 be an opaque IP address and certainly not a Provider-Assigned IP address.<=
o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">(2) The routers are configured with geo-coordinates =
(they are not required to have GPS receivers) of their physical location.<o=
:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">(3) When the tracked device appears to these routers=
, the IP address of the tracked device is associated with one more geo-coor=
dinates of the routers.<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">(4) The routers can put this information in various =
types of databases.<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">One could see how a data-plane application could als=
o extend this use-case.<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Thanks,<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Dino<o:p></o:p></p>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><img width=3D"640" height=3D"476" id=3D"_x0037_4024E=
29-CEB2-4C8D-BBB4-5217B7772D85" src=3D"cid:image002.png@01CF0AC9.F9E655C0">=
<o:p></o:p></p>
</div>
</div>
</div>
</div>
</body>
</html>

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From: <karagian@cs.utwente.nl>
To: <dimitri.papadimitriou@alcatel-lucent.com>
Thread-Topic: challenges proposed by Dimitri
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Date: Mon, 6 Jan 2014 10:21:17 +0000
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--_000_FF1A9612A94D5C4A81ED7DE1039AB80F4F4152E5EXMBX23adutwent_
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Hi Dimitri,

Thank you very much!
The questions that you have listed below are very useful and therefore I am=
 forwarding your email to the its list!

Actually, I agree with the challenges that you described and I will try to =
integrate them in what we have up to now:

1. How can a geographic area be "represented", since several IP locators ca=
n give access to it.

2. which resolution mechanism can be used at the source node e.g. Geo-locat=
or (name)/ Geo-Physical coord.(addr.) to IP locator

3. which resolution mechanism can be used at IP locator (or edges) if packe=
ts would have to transit non IP islands e.g. Geo-locator (name) to Geo-Phys=
ical coord.

4. what is the rate and size of the records populating the resolution datab=
ase

5. at which level of "stack" this information has to be inserted such that =
intermediate nodes can successfully reach the destination as expected by th=
e source.

Best regards,
Georgios




From: Papadimitriou, Dimitri (Dimitri) [mailto:dimitri.papadimitriou@alcate=
l-lucent.com]
Sent: zaterdag 14 december 2013 23:56
To: Karagiannis, G. (EWI)
Subject: RE: the uncrisp problem

Hello,

Reading all the discussions, I wonder why there is no item discussing the f=
ollowing points:

At the network wide level

- Geo-locators (naming the geographic area) vs Geo-physical coordinates (th=
e actual coordinates of that area)

Have the same relationship as

- IP network locators vs none (known as of today)

Note however at the local level there is distinction between IP address (lo=
gical) and e.g. MAC address (physical)

Thus there is first a question 1. what a geographic area "represents" becau=
se several IP locators can give access to it.

Then the "base" problem stems as follows

2. which resolution mechanism at the source node e.g. Geo-locator (name)/ G=
eo-Physical coord.(addr.) to IP locator

3. which resolution mechanism at IP locator (or edges) if packets would hav=
e to transit non IP islands e.g. Geo-locator (name) to Geo-Physical coord.

4. what is the rate and size of the records populating the resolution datab=
ase

5. at which level of "stack" this information has to be inserted such that =
intermediate nodes can successfully reach the destination as expected by th=
e source.


Thanks,
-dimitri.

--_000_FF1A9612A94D5C4A81ED7DE1039AB80F4F4152E5EXMBX23adutwent_
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<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Hi Dimitri=
,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Thank you =
very much!<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">The questi=
ons that you have listed below are very useful and therefore I am forwardin=
g your email to the its list!<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Actually, =
I agree with the challenges that you described and I will try to integrate =
them in what we have up to now:<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black">1. How can a geographic area be=
 &#8220;represented&#8221;, since several IP locators can give access to it=
.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black">2. which resolution mechanism c=
an be used at the source node e.g. Geo-locator (name)/ Geo-Physical coord.(=
addr.) to IP locator
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black">3. which resolution mechanism c=
an be used at IP locator (or edges) if packets would have to transit non IP=
 islands e.g. Geo-locator (name) to Geo-Physical
 coord.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black">4. what is the rate and size of=
 the records populating the resolution database
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black">5. at which level of &#8220;sta=
ck&#8221; this information has to be inserted such that intermediate nodes =
can successfully reach the destination as expected by the source.<o:p></o:p=
></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black">Best regards,<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black">Georgios<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-GB" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp=
;</o:p></span></p>
<div style=3D"border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm =
4.0pt">
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"EN-US" style=3D"font-size:10.0pt;fo=
nt-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span =
lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,&qu=
ot;sans-serif&quot;"> Papadimitriou, Dimitri (Dimitri) [mailto:dimitri.papa=
dimitriou@alcatel-lucent.com]
<br>
<b>Sent:</b> zaterdag 14 december 2013 23:56<br>
<b>To:</b> Karagiannis, G. (EWI)<br>
<b>Subject:</b> RE: the uncrisp problem<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><span lang=3D"EN-GB"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black">Hello,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black">Reading all the discussions, I =
wonder why there is no item discussing the following points:<o:p></o:p></sp=
an></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black">At the network wide level<o:p><=
/o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black">- Geo-locators (naming the geog=
raphic area) vs Geo-physical coordinates (the actual coordinates of that ar=
ea)<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black">Have the same relationship as<o=
:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black">- IP network locators vs none (=
known as of today)<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black">Note however at the local level=
 there is distinction between IP address (logical) and e.g. MAC address (ph=
ysical)<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black">Thus there is first a question =
1. what a geographic area &#8220;represents&#8221; because several IP locat=
ors can give access to it.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black">Then the &#8220;base&#8221; pro=
blem stems as follows
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black">2. which resolution mechanism a=
t the source node e.g. Geo-locator (name)/ Geo-Physical coord.(addr.) to IP=
 locator
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black">3. which resolution mechanism a=
t IP locator (or edges) if packets would have to transit non IP islands e.g=
. Geo-locator (name) to Geo-Physical coord.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black">4. what is the rate and size of=
 the records populating the resolution database
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black">5. at which level of &#8220;sta=
ck&#8221; this information has to be inserted such that intermediate nodes =
can successfully reach the destination as expected by the source.<o:p></o:p=
></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black">Thanks,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:black">-dimitri.<o:p></o:p></span></p>
</div>
</div>
</body>
</html>

--_000_FF1A9612A94D5C4A81ED7DE1039AB80F4F4152E5EXMBX23adutwent_--

From farinacci@gmail.com  Mon Jan  6 12:02:15 2014
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From: Dino Farinacci <farinacci@gmail.com>
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To: Georgios Karagiannis <karagian@cs.utwente.nl>
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Subject: Re: [geonet/its] A possible geonet use-case
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> Hi Dino,
> =20
> Thanks for the email and sorry for the delay!
> =20
> I assume that the use case that you describe uses the LISP =
architecture and concepts, where according to RFC 6830:
> =20
> =93Routers continue to forward packets based on IP destination
>    addresses.  When a packet is LISP encapsulated, these addresses are
>    referred to as Routing Locators (RLOCs).  Most routers along a path
>    between two hosts will not change; they continue to perform =
routing/
>    forwarding lookups on the destination addresses.  For routers =
between
>    the source host and the ITR as well as routers from the ETR to the
>    destination host, the destination address is an EID.  For the =
routers
>    between the ITR and the ETR, the destination address is an RLOC.=94
> =20
> =20
> What is missing from your use case description is the fact that the =
End-systems (hosts) might not know the EID addresses.

The Fedex package example is a control-plane play only. Because RLOCs =
are geo-coordinates which there is no packet format today to use them =
(no network layer). ;-)

In my use-case, the EIDs are not talking to each other. All the use-case =
is using is a mapping database to map EIDs to Geo-Coordinates. Where =
EIDs are Fedex tracking numbers and the RLOCs are the Geo-Coordinates.

> What these end-systems could know is a geographic area where =
information needs to be sent to. So the end-system will need to have a =
way of translating the geographical area to EIDs, in addition to the =
LISP EID-to-RLOC Database.
> How will you integrate this point into your use case description.

Okay, so an data-path examples is in order. But this is a completely =
different use-case. So don't confuse them with the control-plane only =
Fedex use-case.

Here is a packet sequence where you can use Geo-Coordinates to select =
where packets are routed towards:

(1) Georgios, you are an EID. I want to send packets to you. I am an EID =
as well.
(2) I do a lookup in the LISP mapping database with a key "Georgios". =
What I get is a RLOC-set back as a reply from the mapping system.
(3) Let's say the RLOC-set contains 2 entries. Each entry is a 2-tuple =
of IP address of a LISP decapsulator and the Geo-Coordinates where it =
resides.
(4) The RLOC-set returns Geo-Coordinates for San Jose and Athens.
(5) I want to send packets to you via the San Jose xTR (that is the =
policy I want).

Dino



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From: <karagian@cs.utwente.nl>
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Thread-Topic: [geonet/its] A possible geonet use-case
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Subject: Re: [geonet/its] A possible geonet use-case
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Hi Dino,

Thanks for the explanation.
I think that the use case that you proposed is very useful.
Actually in this use case you assume that you know the names (IDs) of a net=
work entity (or end- host), which are the EIDs and need to find, via this m=
apping table the Geo-coordinates (and I assume also the IP address) of this=
 network entity (or end-host).

The use cases that are described in the current version of the Internet-wid=
e Geo-networking: Problem statement draft, assume that you know the geo-coo=
rdinates (your proposed RLOC; but without knowing the IP address) and via a=
 mapping table need to find out the IP address (or name, e.g., EID) of the =
network entity (end-host). So actually is the reverse mapping of what your =
use case describes.=20
This is very good, now we have use cases that justifies the use of forward =
 mapping from name (EID) to geo-coordinates (RLOC)) and reverse mapping fro=
m geo-coordinates (RLOC) to names (EID).

I think that your use case can be easily integrated in what we have up to n=
ow!

Furthermore, please note that challenges, that we need to also identify are=
 the ones proposed by Dimitri Papadimitriou, can you please comment on thes=
e, please see email that I have sent yesterday with title: "challenges prop=
osed by Dimitri"", which somehow address issues like: (1)  How can a geogra=
phic area be "represented", (2) which resolution mechanism to be used at th=
e source (end-host), (3) which resolution mechanism can be used at the edge=
s ( ITR and ETR), I assume the LISP based mapping in your use case?), (4) w=
hat is the rate and size of records populating the data base, (5) at which =
level of the protocol "stack" this mapping information needs to be inserted=
 (in your use case I assume at the IP layer?)

Best regards,
Georgios




> -----Original Message-----
> From: Dino Farinacci [mailto:farinacci@gmail.com]
> Sent: maandag 6 januari 2014 21:02
> To: Karagiannis, G. (EWI)
> Cc: <its@ietf.org>
> Subject: Re: [geonet/its] A possible geonet use-case
>=20
> > Hi Dino,
> >
> > Thanks for the email and sorry for the delay!
> >
> > I assume that the use case that you describe uses the LISP architecture=
 and
> concepts, where according to RFC 6830:
> >
> > "Routers continue to forward packets based on IP destination
> >    addresses.  When a packet is LISP encapsulated, these addresses are
> >    referred to as Routing Locators (RLOCs).  Most routers along a path
> >    between two hosts will not change; they continue to perform routing/
> >    forwarding lookups on the destination addresses.  For routers betwee=
n
> >    the source host and the ITR as well as routers from the ETR to the
> >    destination host, the destination address is an EID.  For the router=
s
> >    between the ITR and the ETR, the destination address is an RLOC."
> >
> >
> > What is missing from your use case description is the fact that the End=
-
> systems (hosts) might not know the EID addresses.
>=20
> The Fedex package example is a control-plane play only. Because RLOCs are
> geo-coordinates which there is no packet format today to use them (no
> network layer). ;-)
>=20
> In my use-case, the EIDs are not talking to each other. All the use-case =
is
> using is a mapping database to map EIDs to Geo-Coordinates. Where EIDs ar=
e
> Fedex tracking numbers and the RLOCs are the Geo-Coordinates.
>=20
> > What these end-systems could know is a geographic area where
> information needs to be sent to. So the end-system will need to have a wa=
y
> of translating the geographical area to EIDs, in addition to the LISP EID=
-to-
> RLOC Database.
> > How will you integrate this point into your use case description.
>=20
> Okay, so an data-path examples is in order. But this is a completely diff=
erent
> use-case. So don't confuse them with the control-plane only Fedex use-cas=
e.
>=20
> Here is a packet sequence where you can use Geo-Coordinates to select
> where packets are routed towards:
>=20
> (1) Georgios, you are an EID. I want to send packets to you. I am an EID =
as
> well.
> (2) I do a lookup in the LISP mapping database with a key "Georgios". Wha=
t I
> get is a RLOC-set back as a reply from the mapping system.
> (3) Let's say the RLOC-set contains 2 entries. Each entry is a 2-tuple of=
 IP
> address of a LISP decapsulator and the Geo-Coordinates where it resides.
> (4) The RLOC-set returns Geo-Coordinates for San Jose and Athens.
> (5) I want to send packets to you via the San Jose xTR (that is the polic=
y I
> want).
>=20
> Dino
>=20


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Subject: Re: [geonet/its] A possible geonet use-case
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> Furthermore, please note that challenges, that we need to also =
identify are the ones proposed by Dimitri Papadimitriou, can you please =
comment on these, please see email that I have sent yesterday with =
title: "challenges proposed by Dimitri"", which somehow address issues =
like: (1)  How can a geographic area be "represented", (2) which =
resolution mechanism to be used at the source (end-host), (3) which =
resolution mechanism can be used at the edges ( ITR and ETR), I assume =
the LISP based mapping in your use case?), (4) what is the rate and size =
of records populating the data base, (5) at which level of the protocol =
"stack" this mapping information needs to be inserted (in your use case =
I assume at the IP layer?)

Here are some answers to questions (1) through (5):

(1) Geo-Coordinates are very much my IP prefixes. Degrees/Feet/Minutes =
can be used hierarchically. You can use combinations to defined a radius =
(a circular boundary), a triangle (as typical triangulation is used), or =
a square. And we can do longest match lookups on this 3-level hierarchy.

(2) An ITR could say "connect to Georgios EID via the closest ETR witin =
radius 10 degrees of Athens".

(3) Same as (2).

(4) That depends on so many things. We can discuss this at next IETF =
meeting perhaps.

(5) Network layer of course!

Dino


From alexandru.petrescu@gmail.com  Wed Jan  8 03:34:19 2014
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Subject: Re: [geonet/its] challenges proposed by Dimitri
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Hi Georgios,

You are asking for feedback.

I have some thoughts on this.  Far from me any intention to complexify
things.

I will be happy to read others' remarks.

Le 06/01/2014 11:21, karagian@cs.utwente.nl a écrit :
> Hi Dimitri,
>
> Thank you very much!
>
> The questions that you have listed below are very useful and
> therefore I am forwarding your email to the its list!
>
> Actually, I agree with the challenges that you described and I will
> try to integrate them in what we have up to now:
>
> 1. How can a geographic area be represented, since several IP
> locators can give access to it.

An area could be represented by the coordinates of some of the points on
its perimeter, or other description of point coordinates and shape
identifier.  A volume description would have more possibilities.  One
should also consider maybe the projection alternatives.

> 2. which resolution mechanism can be used at the source node e.g.
> Geo-locator (name)/ Geo-Physical coord.(addr.) to IP locator

Yes, resolution mechanism may be needed.

But, we currently know two kinds of resolution:
- IP address <-> MAC address (ND)
- IP address <-> name (DNS)

With geonet we'd talk new identifiers like geographical coordinates.  If
we talked only one such coordinate (say 'latitude'), then we'd need 3
new resolution mechanisms:
- IP address <-> latitude (protocol IPL)
- MAC address <-> latitude (protocol MACL)
- name <-> latitude (protocol NL).

Maybe the latitude is not sufficient, so we'd need longitude and
altitude as well.  This would give a total of 9 new resolution protocols.

On another hand, one may think of combining the lat/long/alt into a
single identifier.  That may appear simple at first sight, but may have
its own difficulties, one of which being the necessity of the
representation of precision (HDOP, VDOP).

Not to mention the difficulty of coming up with an agreed way of
representing one single geographical coordinate (it's not because
everybody talks GPS now that someone will not talk Baidou tomorrow, as
an example).  If I want to locate all the IP sensors of water level
measurements where I live I am not able to use the GPS coordinates, I
must use coordinates using the Lambert projection (just another example).

Yes, I am told conversion tools exist (e.g. same GNSS chipset outputs
both GPS and Galileo data, using an internal conversion).  But then the
question is whether we need conversion tools or resolution tools
(protocols).

Alex

> 3. which resolution mechanism can be used at IP locator (or edges)
> if packets would have to transit non IP islands e.g. Geo-locator
> (name) to Geo-Physical coord.
>
> 4. what is the rate and size of the records populating the
> resolution database
>
> 5. at which level of stack this information has to be inserted
> such that intermediate nodes can successfully reach the destination
> as expected by the source.
>
> Best regards,
>
> Georgios
>
> *From:*Papadimitriou, Dimitri (Dimitri)
> [mailto:dimitri.papadimitriou@alcatel-lucent.com] *Sent:* zaterdag
> 14 december 2013 23:56 *To:* Karagiannis, G. (EWI) *Subject:* RE:
> the uncrisp problem
>
> Hello,
>
> Reading all the discussions, I wonder why there is no item
> discussing the following points:
>
> At the network wide level
>
> - Geo-locators (naming the geographic area) vs Geo-physical
> coordinates (the actual coordinates of that area)
>
> Have the same relationship as
>
> - IP network locators vs none (known as of today)
>
> Note however at the local level there is distinction between IP
> address (logical) and e.g. MAC address (physical)
>
> Thus there is first a question 1. what a geographic area
> represents because several IP locators can give access to it.
>
> Then the base problem stems as follows
>
> 2. which resolution mechanism at the source node e.g. Geo-locator
> (name)/ Geo-Physical coord.(addr.) to IP locator
>
> 3. which resolution mechanism at IP locator (or edges) if packets
> would have to transit non IP islands e.g. Geo-locator (name) to
> Geo-Physical coord.
>
> 4. what is the rate and size of the records populating the
> resolution database
>
> 5. at which level of stack this information has to be inserted
> such that intermediate nodes can successfully reach the destination
> as expected by the source.
>
> Thanks,
>
> -dimitri.
>
>
>
> _______________________________________________ its mailing list
> its@ietf.org https://www.ietf.org/mailman/listinfo/its
>



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From: "Carl Reed" <creed@opengeospatial.org>
To: "Alexandru Petrescu" <alexandru.petrescu@gmail.com>, <karagian@cs.utwente.nl>, <dimitri.papadimitriou@alcatel-lucent.com>
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Subject: Re: [geonet/its] challenges proposed by Dimitri
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Alex -

A very common practice in the land management community is to create a=20
unique parcel identifier based on the coordinates of the centroid of the=20
parcel. The approach generates a single PIN based on lat/long, which in t=
he=20
use case below reduces the number resolution mechanisms.

http://www.hendersoncountync.org/ca/howpins.html

Shows an example. They use state-plane but a similar approach could be us=
ed=20
for lat/long coordinates.

And you also raise the question of coordinate reference systems (CRS) and=
=20
the requirements perhaps to transform between CRS (also known as=20
re-projection). Regardless of the approach this group decides to follow, =
at=20
a minimum the documentation needs to be very clear on the CRS of the=20
coordinate(s) being used. Simply stating lat/long is unclear and can=20
actually result in significant absolute location errors depending on the=20
geoid used for a given lat/long pair. The existing location object (LO)=20
definition used in PIDF and a number of other RFCs very clearly states th=
e=20
relevant EPSG code for the CRS being used. The approach for specifying a =
CRS=20
is defined by ISO and the OGC in a variety of documents.

The above may seem a trivial point, but ambiguity in the specification of=
=20
the CRS for a coordinate set can lead to a number of issues in terms of=20
visualization, analysis, fusion, analytics and so forth.

Cheers

Carl


-----Original Message-----=20
From: Alexandru Petrescu
Sent: Wednesday, January 08, 2014 4:33 AM
To: karagian@cs.utwente.nl ; dimitri.papadimitriou@alcatel-lucent.com
Cc: its@ietf.org
Subject: Re: [geonet/its] challenges proposed by Dimitri

Hi Georgios,

You are asking for feedback.

I have some thoughts on this.  Far from me any intention to complexify
things.

I will be happy to read others' remarks.

Le 06/01/2014 11:21, karagian@cs.utwente.nl a =E9crit :
> Hi Dimitri,
>
> Thank you very much!
>
> The questions that you have listed below are very useful and
> therefore I am forwarding your email to the its list!
>
> Actually, I agree with the challenges that you described and I will
> try to integrate them in what we have up to now:
>
> 1. How can a geographic area be =93represented=94, since several IP
> locators can give access to it.

An area could be represented by the coordinates of some of the points on
its perimeter, or other description of point coordinates and shape
identifier.  A volume description would have more possibilities.  One
should also consider maybe the projection alternatives.

> 2. which resolution mechanism can be used at the source node e.g.
> Geo-locator (name)/ Geo-Physical coord.(addr.) to IP locator

Yes, resolution mechanism may be needed.

But, we currently know two kinds of resolution:
- IP address <-> MAC address (ND)
- IP address <-> name (DNS)

With geonet we'd talk new identifiers like geographical coordinates.  If
we talked only one such coordinate (say 'latitude'), then we'd need 3
new resolution mechanisms:
- IP address <-> latitude (protocol IPL)
- MAC address <-> latitude (protocol MACL)
- name <-> latitude (protocol NL).

Maybe the latitude is not sufficient, so we'd need longitude and
altitude as well.  This would give a total of 9 new resolution protocols.

On another hand, one may think of combining the lat/long/alt into a
single identifier.  That may appear simple at first sight, but may have
its own difficulties, one of which being the necessity of the
representation of precision (HDOP, VDOP).

Not to mention the difficulty of coming up with an agreed way of
representing one single geographical coordinate (it's not because
everybody talks GPS now that someone will not talk Baidou tomorrow, as
an example).  If I want to locate all the IP sensors of water level
measurements where I live I am not able to use the GPS coordinates, I
must use coordinates using the Lambert projection (just another example).

Yes, I am told conversion tools exist (e.g. same GNSS chipset outputs
both GPS and Galileo data, using an internal conversion).  But then the
question is whether we need conversion tools or resolution tools
(protocols).

Alex

> 3. which resolution mechanism can be used at IP locator (or edges)
> if packets would have to transit non IP islands e.g. Geo-locator
> (name) to Geo-Physical coord.
>
> 4. what is the rate and size of the records populating the
> resolution database
>
> 5. at which level of =93stack=94 this information has to be inserted
> such that intermediate nodes can successfully reach the destination
> as expected by the source.
>
> Best regards,
>
> Georgios
>
> *From:*Papadimitriou, Dimitri (Dimitri)
> [mailto:dimitri.papadimitriou@alcatel-lucent.com] *Sent:* zaterdag
> 14 december 2013 23:56 *To:* Karagiannis, G. (EWI) *Subject:* RE:
> the uncrisp problem
>
> Hello,
>
> Reading all the discussions, I wonder why there is no item
> discussing the following points:
>
> At the network wide level
>
> - Geo-locators (naming the geographic area) vs Geo-physical
> coordinates (the actual coordinates of that area)
>
> Have the same relationship as
>
> - IP network locators vs none (known as of today)
>
> Note however at the local level there is distinction between IP
> address (logical) and e.g. MAC address (physical)
>
> Thus there is first a question 1. what a geographic area
> =93represents=94 because several IP locators can give access to it.
>
> Then the =93base=94 problem stems as follows
>
> 2. which resolution mechanism at the source node e.g. Geo-locator
> (name)/ Geo-Physical coord.(addr.) to IP locator
>
> 3. which resolution mechanism at IP locator (or edges) if packets
> would have to transit non IP islands e.g. Geo-locator (name) to
> Geo-Physical coord.
>
> 4. what is the rate and size of the records populating the
> resolution database
>
> 5. at which level of =93stack=94 this information has to be inserted
> such that intermediate nodes can successfully reach the destination
> as expected by the source.
>
> Thanks,
>
> -dimitri.
>
>
>
> _______________________________________________ its mailing list
> its@ietf.org https://www.ietf.org/mailman/listinfo/its
>


_______________________________________________
its mailing list
its@ietf.org
https://www.ietf.org/mailman/listinfo/its=20


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To: Carl Reed <creed@opengeospatial.org>
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Cc: Alexandru Petrescu <alexandru.petrescu@gmail.com>, Georgios Karagiannis <karagian@cs.utwente.nl>, "<its@ietf.org>" <its@ietf.org>, dimitri.papadimitriou@alcatel-lucent.com
Subject: Re: [geonet/its] challenges proposed by Dimitri
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Yes, but in this case, you need some other value to determine boundary. =
Because the center of your property can include me your neighbor if you =
don't have that other boundary. So radius, triangulation, or four sets =
of geo-coordinates are necessary.=20

And I would argue some properties are not just hexagons, but octigons or =
nonagons as well. Depends on the granularity you want or need.

Dino

On Jan 8, 2014, at 8:23 AM, Carl Reed <creed@opengeospatial.org> wrote:

> Alex -
>=20
> A very common practice in the land management community is to create a =
unique parcel identifier based on the coordinates of the centroid of the =
parcel. The approach generates a single PIN based on lat/long, which in =
the use case below reduces the number resolution mechanisms.
>=20
> http://www.hendersoncountync.org/ca/howpins.html
>=20
> Shows an example. They use state-plane but a similar approach could be =
used for lat/long coordinates.
>=20
> And you also raise the question of coordinate reference systems (CRS) =
and the requirements perhaps to transform between CRS (also known as =
re-projection). Regardless of the approach this group decides to follow, =
at a minimum the documentation needs to be very clear on the CRS of the =
coordinate(s) being used. Simply stating lat/long is unclear and can =
actually result in significant absolute location errors depending on the =
geoid used for a given lat/long pair. The existing location object (LO) =
definition used in PIDF and a number of other RFCs very clearly states =
the relevant EPSG code for the CRS being used. The approach for =
specifying a CRS is defined by ISO and the OGC in a variety of =
documents.
>=20
> The above may seem a trivial point, but ambiguity in the specification =
of the CRS for a coordinate set can lead to a number of issues in terms =
of visualization, analysis, fusion, analytics and so forth.
>=20
> Cheers
>=20
> Carl
>=20
>=20
> -----Original Message----- From: Alexandru Petrescu
> Sent: Wednesday, January 08, 2014 4:33 AM
> To: karagian@cs.utwente.nl ; dimitri.papadimitriou@alcatel-lucent.com
> Cc: its@ietf.org
> Subject: Re: [geonet/its] challenges proposed by Dimitri
>=20
> Hi Georgios,
>=20
> You are asking for feedback.
>=20
> I have some thoughts on this.  Far from me any intention to complexify
> things.
>=20
> I will be happy to read others' remarks.
>=20
> Le 06/01/2014 11:21, karagian@cs.utwente.nl a =E9crit :
>> Hi Dimitri,
>>=20
>> Thank you very much!
>>=20
>> The questions that you have listed below are very useful and
>> therefore I am forwarding your email to the its list!
>>=20
>> Actually, I agree with the challenges that you described and I will
>> try to integrate them in what we have up to now:
>>=20
>> 1. How can a geographic area be =93represented=94, since several IP
>> locators can give access to it.
>=20
> An area could be represented by the coordinates of some of the points =
on
> its perimeter, or other description of point coordinates and shape
> identifier.  A volume description would have more possibilities.  One
> should also consider maybe the projection alternatives.
>=20
>> 2. which resolution mechanism can be used at the source node e.g.
>> Geo-locator (name)/ Geo-Physical coord.(addr.) to IP locator
>=20
> Yes, resolution mechanism may be needed.
>=20
> But, we currently know two kinds of resolution:
> - IP address <-> MAC address (ND)
> - IP address <-> name (DNS)
>=20
> With geonet we'd talk new identifiers like geographical coordinates.  =
If
> we talked only one such coordinate (say 'latitude'), then we'd need 3
> new resolution mechanisms:
> - IP address <-> latitude (protocol IPL)
> - MAC address <-> latitude (protocol MACL)
> - name <-> latitude (protocol NL).
>=20
> Maybe the latitude is not sufficient, so we'd need longitude and
> altitude as well.  This would give a total of 9 new resolution =
protocols.
>=20
> On another hand, one may think of combining the lat/long/alt into a
> single identifier.  That may appear simple at first sight, but may =
have
> its own difficulties, one of which being the necessity of the
> representation of precision (HDOP, VDOP).
>=20
> Not to mention the difficulty of coming up with an agreed way of
> representing one single geographical coordinate (it's not because
> everybody talks GPS now that someone will not talk Baidou tomorrow, as
> an example).  If I want to locate all the IP sensors of water level
> measurements where I live I am not able to use the GPS coordinates, I
> must use coordinates using the Lambert projection (just another =
example).
>=20
> Yes, I am told conversion tools exist (e.g. same GNSS chipset outputs
> both GPS and Galileo data, using an internal conversion).  But then =
the
> question is whether we need conversion tools or resolution tools
> (protocols).
>=20
> Alex
>=20
>> 3. which resolution mechanism can be used at IP locator (or edges)
>> if packets would have to transit non IP islands e.g. Geo-locator
>> (name) to Geo-Physical coord.
>>=20
>> 4. what is the rate and size of the records populating the
>> resolution database
>>=20
>> 5. at which level of =93stack=94 this information has to be inserted
>> such that intermediate nodes can successfully reach the destination
>> as expected by the source.
>>=20
>> Best regards,
>>=20
>> Georgios
>>=20
>> *From:*Papadimitriou, Dimitri (Dimitri)
>> [mailto:dimitri.papadimitriou@alcatel-lucent.com] *Sent:* zaterdag
>> 14 december 2013 23:56 *To:* Karagiannis, G. (EWI) *Subject:* RE:
>> the uncrisp problem
>>=20
>> Hello,
>>=20
>> Reading all the discussions, I wonder why there is no item
>> discussing the following points:
>>=20
>> At the network wide level
>>=20
>> - Geo-locators (naming the geographic area) vs Geo-physical
>> coordinates (the actual coordinates of that area)
>>=20
>> Have the same relationship as
>>=20
>> - IP network locators vs none (known as of today)
>>=20
>> Note however at the local level there is distinction between IP
>> address (logical) and e.g. MAC address (physical)
>>=20
>> Thus there is first a question 1. what a geographic area
>> =93represents=94 because several IP locators can give access to it.
>>=20
>> Then the =93base=94 problem stems as follows
>>=20
>> 2. which resolution mechanism at the source node e.g. Geo-locator
>> (name)/ Geo-Physical coord.(addr.) to IP locator
>>=20
>> 3. which resolution mechanism at IP locator (or edges) if packets
>> would have to transit non IP islands e.g. Geo-locator (name) to
>> Geo-Physical coord.
>>=20
>> 4. what is the rate and size of the records populating the
>> resolution database
>>=20
>> 5. at which level of =93stack=94 this information has to be inserted
>> such that intermediate nodes can successfully reach the destination
>> as expected by the source.
>>=20
>> Thanks,
>>=20
>> -dimitri.
>>=20
>>=20
>>=20
>> _______________________________________________ its mailing list
>> its@ietf.org https://www.ietf.org/mailman/listinfo/its
>>=20
>=20
>=20
> _______________________________________________
> its mailing list
> its@ietf.org
> https://www.ietf.org/mailman/listinfo/its=20
> _______________________________________________
> its mailing list
> its@ietf.org
> https://www.ietf.org/mailman/listinfo/its


From creed@opengeospatial.org  Wed Jan  8 15:45:49 2014
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Message-ID: <CBA134076CE541559AB741F3B7CBD121@OfficeHP>
From: "Carl Reed" <creed@opengeospatial.org>
To: "Dino Farinacci" <farinacci@gmail.com>
References: <FF1A9612A94D5C4A81ED7DE1039AB80F4F4152E5@EXMBX23.ad.utwente.nl> <52CD379A.9050500@gmail.com> <41743CE084894303AEC136DB1C42325D@OfficeHP> <D7B6A836-15D5-40F0-82B6-6A715D248EB0@gmail.com>
In-Reply-To: <D7B6A836-15D5-40F0-82B6-6A715D248EB0@gmail.com>
Date: Wed, 8 Jan 2014 16:44:21 -0700
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Cc: Alexandru Petrescu <alexandru.petrescu@gmail.com>, Georgios Karagiannis <karagian@cs.utwente.nl>, its@ietf.org, dimitri.papadimitriou@alcatel-lucent.com
Subject: Re: [geonet/its] challenges proposed by Dimitri
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Dino -

Thanks.

I was suggesting an approach to uniquely identify a location without havi=
ng=20
to use lat-long coordinates. The issue of a "boundary" is different. FYI,=
 a=20
boundary of three of more non-intersecting sides/edges (in GIS) is a=20
polygon. All treated the same. ISO 19107:Spatial Schema provides a set of=
=20
mathematical definitions for various types of 2d and 3d geometry. We use=20
these definitions in the OGC - as does OASIS, NENA, and a number of other=
=20
standards organizations that work with geometry and location.

Cheers

Carl


-----Original Message-----=20
From: Dino Farinacci
Sent: Wednesday, January 08, 2014 11:33 AM
To: Carl Reed
Cc: Alexandru Petrescu ; Georgios Karagiannis ;=20
dimitri.papadimitriou@alcatel-lucent.com ; <its@ietf.org>
Subject: Re: [geonet/its] challenges proposed by Dimitri

Yes, but in this case, you need some other value to determine boundary.=20
Because the center of your property can include me your neighbor if you=20
don't have that other boundary. So radius, triangulation, or four sets of=
=20
geo-coordinates are necessary.

And I would argue some properties are not just hexagons, but octigons or=20
nonagons as well. Depends on the granularity you want or need.

Dino

On Jan 8, 2014, at 8:23 AM, Carl Reed <creed@opengeospatial.org> wrote:

> Alex -
>
> A very common practice in the land management community is to create a=20
> unique parcel identifier based on the coordinates of the centroid of th=
e=20
> parcel. The approach generates a single PIN based on lat/long, which in=
=20
> the use case below reduces the number resolution mechanisms.
>
> http://www.hendersoncountync.org/ca/howpins.html
>
> Shows an example. They use state-plane but a similar approach could be=20
> used for lat/long coordinates.
>
> And you also raise the question of coordinate reference systems (CRS) a=
nd=20
> the requirements perhaps to transform between CRS (also known as=20
> re-projection). Regardless of the approach this group decides to follow=
,=20
> at a minimum the documentation needs to be very clear on the CRS of the=
=20
> coordinate(s) being used. Simply stating lat/long is unclear and can=20
> actually result in significant absolute location errors depending on th=
e=20
> geoid used for a given lat/long pair. The existing location object (LO)=
=20
> definition used in PIDF and a number of other RFCs very clearly states =
the=20
> relevant EPSG code for the CRS being used. The approach for specifying =
a=20
> CRS is defined by ISO and the OGC in a variety of documents.
>
> The above may seem a trivial point, but ambiguity in the specification =
of=20
> the CRS for a coordinate set can lead to a number of issues in terms of=
=20
> visualization, analysis, fusion, analytics and so forth.
>
> Cheers
>
> Carl
>
>
> -----Original Message----- From: Alexandru Petrescu
> Sent: Wednesday, January 08, 2014 4:33 AM
> To: karagian@cs.utwente.nl ; dimitri.papadimitriou@alcatel-lucent.com
> Cc: its@ietf.org
> Subject: Re: [geonet/its] challenges proposed by Dimitri
>
> Hi Georgios,
>
> You are asking for feedback.
>
> I have some thoughts on this.  Far from me any intention to complexify
> things.
>
> I will be happy to read others' remarks.
>
> Le 06/01/2014 11:21, karagian@cs.utwente.nl a =E9crit :
>> Hi Dimitri,
>>
>> Thank you very much!
>>
>> The questions that you have listed below are very useful and
>> therefore I am forwarding your email to the its list!
>>
>> Actually, I agree with the challenges that you described and I will
>> try to integrate them in what we have up to now:
>>
>> 1. How can a geographic area be =93represented=94, since several IP
>> locators can give access to it.
>
> An area could be represented by the coordinates of some of the points o=
n
> its perimeter, or other description of point coordinates and shape
> identifier.  A volume description would have more possibilities.  One
> should also consider maybe the projection alternatives.
>
>> 2. which resolution mechanism can be used at the source node e.g.
>> Geo-locator (name)/ Geo-Physical coord.(addr.) to IP locator
>
> Yes, resolution mechanism may be needed.
>
> But, we currently know two kinds of resolution:
> - IP address <-> MAC address (ND)
> - IP address <-> name (DNS)
>
> With geonet we'd talk new identifiers like geographical coordinates.  I=
f
> we talked only one such coordinate (say 'latitude'), then we'd need 3
> new resolution mechanisms:
> - IP address <-> latitude (protocol IPL)
> - MAC address <-> latitude (protocol MACL)
> - name <-> latitude (protocol NL).
>
> Maybe the latitude is not sufficient, so we'd need longitude and
> altitude as well.  This would give a total of 9 new resolution protocol=
s.
>
> On another hand, one may think of combining the lat/long/alt into a
> single identifier.  That may appear simple at first sight, but may have
> its own difficulties, one of which being the necessity of the
> representation of precision (HDOP, VDOP).
>
> Not to mention the difficulty of coming up with an agreed way of
> representing one single geographical coordinate (it's not because
> everybody talks GPS now that someone will not talk Baidou tomorrow, as
> an example).  If I want to locate all the IP sensors of water level
> measurements where I live I am not able to use the GPS coordinates, I
> must use coordinates using the Lambert projection (just another example=
).
>
> Yes, I am told conversion tools exist (e.g. same GNSS chipset outputs
> both GPS and Galileo data, using an internal conversion).  But then the
> question is whether we need conversion tools or resolution tools
> (protocols).
>
> Alex
>
>> 3. which resolution mechanism can be used at IP locator (or edges)
>> if packets would have to transit non IP islands e.g. Geo-locator
>> (name) to Geo-Physical coord.
>>
>> 4. what is the rate and size of the records populating the
>> resolution database
>>
>> 5. at which level of =93stack=94 this information has to be inserted
>> such that intermediate nodes can successfully reach the destination
>> as expected by the source.
>>
>> Best regards,
>>
>> Georgios
>>
>> *From:*Papadimitriou, Dimitri (Dimitri)
>> [mailto:dimitri.papadimitriou@alcatel-lucent.com] *Sent:* zaterdag
>> 14 december 2013 23:56 *To:* Karagiannis, G. (EWI) *Subject:* RE:
>> the uncrisp problem
>>
>> Hello,
>>
>> Reading all the discussions, I wonder why there is no item
>> discussing the following points:
>>
>> At the network wide level
>>
>> - Geo-locators (naming the geographic area) vs Geo-physical
>> coordinates (the actual coordinates of that area)
>>
>> Have the same relationship as
>>
>> - IP network locators vs none (known as of today)
>>
>> Note however at the local level there is distinction between IP
>> address (logical) and e.g. MAC address (physical)
>>
>> Thus there is first a question 1. what a geographic area
>> =93represents=94 because several IP locators can give access to it.
>>
>> Then the =93base=94 problem stems as follows
>>
>> 2. which resolution mechanism at the source node e.g. Geo-locator
>> (name)/ Geo-Physical coord.(addr.) to IP locator
>>
>> 3. which resolution mechanism at IP locator (or edges) if packets
>> would have to transit non IP islands e.g. Geo-locator (name) to
>> Geo-Physical coord.
>>
>> 4. what is the rate and size of the records populating the
>> resolution database
>>
>> 5. at which level of =93stack=94 this information has to be inserted
>> such that intermediate nodes can successfully reach the destination
>> as expected by the source.
>>
>> Thanks,
>>
>> -dimitri.
>>
>>
>>
>> _______________________________________________ its mailing list
>> its@ietf.org https://www.ietf.org/mailman/listinfo/its
>>
>
>
> _______________________________________________
> its mailing list
> its@ietf.org
> https://www.ietf.org/mailman/listinfo/its
> _______________________________________________
> its mailing list
> its@ietf.org
> https://www.ietf.org/mailman/listinfo/its


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References: <FF1A9612A94D5C4A81ED7DE1039AB80F4F4152E5@EXMBX23.ad.utwente.nl> <52CD379A.9050500@gmail.com> <41743CE084894303AEC136DB1C42325D@OfficeHP> <D7B6A836-15D5-40F0-82B6-6A715D248EB0@gmail.com> <CBA134076CE541559AB741F3B7CBD121@OfficeHP>
To: Carl Reed <creed@opengeospatial.org>
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Cc: Alexandru Petrescu <alexandru.petrescu@gmail.com>, Georgios Karagiannis <karagian@cs.utwente.nl>, "<its@ietf.org>" <its@ietf.org>, dimitri.papadimitriou@alcatel-lucent.com
Subject: Re: [geonet/its] challenges proposed by Dimitri
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Then I am not following. Your URL reference illustrates to use a =
coordinate system that North Carolina uses. GPS coordinates are global, =
why would you want to use something else?

Dino

On Jan 8, 2014, at 3:44 PM, Carl Reed <creed@opengeospatial.org> wrote:

> Dino -
>=20
> Thanks.
>=20
> I was suggesting an approach to uniquely identify a location without =
having to use lat-long coordinates. The issue of a "boundary" is =
different. FYI, a boundary of three of more non-intersecting sides/edges =
(in GIS) is a polygon. All treated the same. ISO 19107:Spatial Schema =
provides a set of mathematical definitions for various types of 2d and =
3d geometry. We use these definitions in the OGC - as does OASIS, NENA, =
and a number of other standards organizations that work with geometry =
and location.
>=20
> Cheers
>=20
> Carl
>=20
>=20
> -----Original Message----- From: Dino Farinacci
> Sent: Wednesday, January 08, 2014 11:33 AM
> To: Carl Reed
> Cc: Alexandru Petrescu ; Georgios Karagiannis ; =
dimitri.papadimitriou@alcatel-lucent.com ; <its@ietf.org>
> Subject: Re: [geonet/its] challenges proposed by Dimitri
>=20
> Yes, but in this case, you need some other value to determine =
boundary. Because the center of your property can include me your =
neighbor if you don't have that other boundary. So radius, =
triangulation, or four sets of geo-coordinates are necessary.
>=20
> And I would argue some properties are not just hexagons, but octigons =
or nonagons as well. Depends on the granularity you want or need.
>=20
> Dino
>=20
> On Jan 8, 2014, at 8:23 AM, Carl Reed <creed@opengeospatial.org> =
wrote:
>=20
>> Alex -
>>=20
>> A very common practice in the land management community is to create =
a unique parcel identifier based on the coordinates of the centroid of =
the parcel. The approach generates a single PIN based on lat/long, which =
in the use case below reduces the number resolution mechanisms.
>>=20
>> http://www.hendersoncountync.org/ca/howpins.html
>>=20
>> Shows an example. They use state-plane but a similar approach could =
be used for lat/long coordinates.
>>=20
>> And you also raise the question of coordinate reference systems (CRS) =
and the requirements perhaps to transform between CRS (also known as =
re-projection). Regardless of the approach this group decides to follow, =
at a minimum the documentation needs to be very clear on the CRS of the =
coordinate(s) being used. Simply stating lat/long is unclear and can =
actually result in significant absolute location errors depending on the =
geoid used for a given lat/long pair. The existing location object (LO) =
definition used in PIDF and a number of other RFCs very clearly states =
the relevant EPSG code for the CRS being used. The approach for =
specifying a CRS is defined by ISO and the OGC in a variety of =
documents.
>>=20
>> The above may seem a trivial point, but ambiguity in the =
specification of the CRS for a coordinate set can lead to a number of =
issues in terms of visualization, analysis, fusion, analytics and so =
forth.
>>=20
>> Cheers
>>=20
>> Carl
>>=20
>>=20
>> -----Original Message----- From: Alexandru Petrescu
>> Sent: Wednesday, January 08, 2014 4:33 AM
>> To: karagian@cs.utwente.nl ; dimitri.papadimitriou@alcatel-lucent.com
>> Cc: its@ietf.org
>> Subject: Re: [geonet/its] challenges proposed by Dimitri
>>=20
>> Hi Georgios,
>>=20
>> You are asking for feedback.
>>=20
>> I have some thoughts on this.  Far from me any intention to =
complexify
>> things.
>>=20
>> I will be happy to read others' remarks.
>>=20
>> Le 06/01/2014 11:21, karagian@cs.utwente.nl a =E9crit :
>>> Hi Dimitri,
>>>=20
>>> Thank you very much!
>>>=20
>>> The questions that you have listed below are very useful and
>>> therefore I am forwarding your email to the its list!
>>>=20
>>> Actually, I agree with the challenges that you described and I will
>>> try to integrate them in what we have up to now:
>>>=20
>>> 1. How can a geographic area be =93represented=94, since several IP
>>> locators can give access to it.
>>=20
>> An area could be represented by the coordinates of some of the points =
on
>> its perimeter, or other description of point coordinates and shape
>> identifier.  A volume description would have more possibilities.  One
>> should also consider maybe the projection alternatives.
>>=20
>>> 2. which resolution mechanism can be used at the source node e.g.
>>> Geo-locator (name)/ Geo-Physical coord.(addr.) to IP locator
>>=20
>> Yes, resolution mechanism may be needed.
>>=20
>> But, we currently know two kinds of resolution:
>> - IP address <-> MAC address (ND)
>> - IP address <-> name (DNS)
>>=20
>> With geonet we'd talk new identifiers like geographical coordinates.  =
If
>> we talked only one such coordinate (say 'latitude'), then we'd need 3
>> new resolution mechanisms:
>> - IP address <-> latitude (protocol IPL)
>> - MAC address <-> latitude (protocol MACL)
>> - name <-> latitude (protocol NL).
>>=20
>> Maybe the latitude is not sufficient, so we'd need longitude and
>> altitude as well.  This would give a total of 9 new resolution =
protocols.
>>=20
>> On another hand, one may think of combining the lat/long/alt into a
>> single identifier.  That may appear simple at first sight, but may =
have
>> its own difficulties, one of which being the necessity of the
>> representation of precision (HDOP, VDOP).
>>=20
>> Not to mention the difficulty of coming up with an agreed way of
>> representing one single geographical coordinate (it's not because
>> everybody talks GPS now that someone will not talk Baidou tomorrow, =
as
>> an example).  If I want to locate all the IP sensors of water level
>> measurements where I live I am not able to use the GPS coordinates, I
>> must use coordinates using the Lambert projection (just another =
example).
>>=20
>> Yes, I am told conversion tools exist (e.g. same GNSS chipset outputs
>> both GPS and Galileo data, using an internal conversion).  But then =
the
>> question is whether we need conversion tools or resolution tools
>> (protocols).
>>=20
>> Alex
>>=20
>>> 3. which resolution mechanism can be used at IP locator (or edges)
>>> if packets would have to transit non IP islands e.g. Geo-locator
>>> (name) to Geo-Physical coord.
>>>=20
>>> 4. what is the rate and size of the records populating the
>>> resolution database
>>>=20
>>> 5. at which level of =93stack=94 this information has to be inserted
>>> such that intermediate nodes can successfully reach the destination
>>> as expected by the source.
>>>=20
>>> Best regards,
>>>=20
>>> Georgios
>>>=20
>>> *From:*Papadimitriou, Dimitri (Dimitri)
>>> [mailto:dimitri.papadimitriou@alcatel-lucent.com] *Sent:* zaterdag
>>> 14 december 2013 23:56 *To:* Karagiannis, G. (EWI) *Subject:* RE:
>>> the uncrisp problem
>>>=20
>>> Hello,
>>>=20
>>> Reading all the discussions, I wonder why there is no item
>>> discussing the following points:
>>>=20
>>> At the network wide level
>>>=20
>>> - Geo-locators (naming the geographic area) vs Geo-physical
>>> coordinates (the actual coordinates of that area)
>>>=20
>>> Have the same relationship as
>>>=20
>>> - IP network locators vs none (known as of today)
>>>=20
>>> Note however at the local level there is distinction between IP
>>> address (logical) and e.g. MAC address (physical)
>>>=20
>>> Thus there is first a question 1. what a geographic area
>>> =93represents=94 because several IP locators can give access to it.
>>>=20
>>> Then the =93base=94 problem stems as follows
>>>=20
>>> 2. which resolution mechanism at the source node e.g. Geo-locator
>>> (name)/ Geo-Physical coord.(addr.) to IP locator
>>>=20
>>> 3. which resolution mechanism at IP locator (or edges) if packets
>>> would have to transit non IP islands e.g. Geo-locator (name) to
>>> Geo-Physical coord.
>>>=20
>>> 4. what is the rate and size of the records populating the
>>> resolution database
>>>=20
>>> 5. at which level of =93stack=94 this information has to be inserted
>>> such that intermediate nodes can successfully reach the destination
>>> as expected by the source.
>>>=20
>>> Thanks,
>>>=20
>>> -dimitri.
>>>=20
>>>=20
>>>=20
>>> _______________________________________________ its mailing list
>>> its@ietf.org https://www.ietf.org/mailman/listinfo/its
>>>=20
>>=20
>>=20
>> _______________________________________________
>> its mailing list
>> its@ietf.org
>> https://www.ietf.org/mailman/listinfo/its
>> _______________________________________________
>> its mailing list
>> its@ietf.org
>> https://www.ietf.org/mailman/listinfo/its
>=20


From creed@opengeospatial.org  Wed Jan  8 17:30:31 2014
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Message-ID: <76DD0E8DDFD6435FA52516FAE444B206@OfficeHP>
From: "Carl Reed" <creed@opengeospatial.org>
To: "Dino Farinacci" <farinacci@gmail.com>
References: <FF1A9612A94D5C4A81ED7DE1039AB80F4F4152E5@EXMBX23.ad.utwente.nl> <52CD379A.9050500@gmail.com> <41743CE084894303AEC136DB1C42325D@OfficeHP> <D7B6A836-15D5-40F0-82B6-6A715D248EB0@gmail.com> <CBA134076CE541559AB741F3B7CBD121@OfficeHP> <6C461ECC-41DF-49FD-8C3A-9F1E062C6285@gmail.com>
In-Reply-To: <6C461ECC-41DF-49FD-8C3A-9F1E062C6285@gmail.com>
Date: Wed, 8 Jan 2014 18:06:36 -0700
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Cc: Alexandru Petrescu <alexandru.petrescu@gmail.com>, Georgios Karagiannis <karagian@cs.utwente.nl>, its@ietf.org, dimitri.papadimitriou@alcatel-lucent.com
Subject: Re: [geonet/its] challenges proposed by Dimitri
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Dino -

I am not suggesting using the coordinate system (state plane) used in NC.=
 NC=20
is just an exemplar of how to generate a unique identifier based on a=20
coordinate for a geographic feature. There are other algorithms that allo=
w=20
similar computation of coordinate based unique identifiers.

Of course, lat-long coordinates are not unique :-)=20
http://www.ogcnetwork.net/node/338

This is why the other part of my email was about making sure that the pro=
per=20
information is provided related to the lat/long coordinates being used.

Cheers

Carl

-----Original Message-----=20
From: Dino Farinacci
Sent: Wednesday, January 08, 2014 5:34 PM
To: Carl Reed
Cc: Alexandru Petrescu ; Georgios Karagiannis ;=20
dimitri.papadimitriou@alcatel-lucent.com ; <its@ietf.org>
Subject: Re: [geonet/its] challenges proposed by Dimitri

Then I am not following. Your URL reference illustrates to use a coordina=
te=20
system that North Carolina uses. GPS coordinates are global, why would yo=
u=20
want to use something else?

Dino

On Jan 8, 2014, at 3:44 PM, Carl Reed <creed@opengeospatial.org> wrote:

> Dino -
>
> Thanks.
>
> I was suggesting an approach to uniquely identify a location without=20
> having to use lat-long coordinates. The issue of a "boundary" is=20
> different. FYI, a boundary of three of more non-intersecting sides/edge=
s=20
> (in GIS) is a polygon. All treated the same. ISO 19107:Spatial Schema=20
> provides a set of mathematical definitions for various types of 2d and =
3d=20
> geometry. We use these definitions in the OGC - as does OASIS, NENA, an=
d a=20
> number of other standards organizations that work with geometry and=20
> location.
>
> Cheers
>
> Carl
>
>
> -----Original Message----- From: Dino Farinacci
> Sent: Wednesday, January 08, 2014 11:33 AM
> To: Carl Reed
> Cc: Alexandru Petrescu ; Georgios Karagiannis ;=20
> dimitri.papadimitriou@alcatel-lucent.com ; <its@ietf.org>
> Subject: Re: [geonet/its] challenges proposed by Dimitri
>
> Yes, but in this case, you need some other value to determine boundary.=
=20
> Because the center of your property can include me your neighbor if you=
=20
> don't have that other boundary. So radius, triangulation, or four sets =
of=20
> geo-coordinates are necessary.
>
> And I would argue some properties are not just hexagons, but octigons o=
r=20
> nonagons as well. Depends on the granularity you want or need.
>
> Dino
>
> On Jan 8, 2014, at 8:23 AM, Carl Reed <creed@opengeospatial.org> wrote:
>
>> Alex -
>>
>> A very common practice in the land management community is to create a=
=20
>> unique parcel identifier based on the coordinates of the centroid of t=
he=20
>> parcel. The approach generates a single PIN based on lat/long, which i=
n=20
>> the use case below reduces the number resolution mechanisms.
>>
>> http://www.hendersoncountync.org/ca/howpins.html
>>
>> Shows an example. They use state-plane but a similar approach could be=
=20
>> used for lat/long coordinates.
>>
>> And you also raise the question of coordinate reference systems (CRS) =
and=20
>> the requirements perhaps to transform between CRS (also known as=20
>> re-projection). Regardless of the approach this group decides to follo=
w,=20
>> at a minimum the documentation needs to be very clear on the CRS of th=
e=20
>> coordinate(s) being used. Simply stating lat/long is unclear and can=20
>> actually result in significant absolute location errors depending on t=
he=20
>> geoid used for a given lat/long pair. The existing location object (LO=
)=20
>> definition used in PIDF and a number of other RFCs very clearly states=
=20
>> the relevant EPSG code for the CRS being used. The approach for=20
>> specifying a CRS is defined by ISO and the OGC in a variety of documen=
ts.
>>
>> The above may seem a trivial point, but ambiguity in the specification=
 of=20
>> the CRS for a coordinate set can lead to a number of issues in terms o=
f=20
>> visualization, analysis, fusion, analytics and so forth.
>>
>> Cheers
>>
>> Carl
>>
>>
>> -----Original Message----- From: Alexandru Petrescu
>> Sent: Wednesday, January 08, 2014 4:33 AM
>> To: karagian@cs.utwente.nl ; dimitri.papadimitriou@alcatel-lucent.com
>> Cc: its@ietf.org
>> Subject: Re: [geonet/its] challenges proposed by Dimitri
>>
>> Hi Georgios,
>>
>> You are asking for feedback.
>>
>> I have some thoughts on this.  Far from me any intention to complexify
>> things.
>>
>> I will be happy to read others' remarks.
>>
>> Le 06/01/2014 11:21, karagian@cs.utwente.nl a =E9crit :
>>> Hi Dimitri,
>>>
>>> Thank you very much!
>>>
>>> The questions that you have listed below are very useful and
>>> therefore I am forwarding your email to the its list!
>>>
>>> Actually, I agree with the challenges that you described and I will
>>> try to integrate them in what we have up to now:
>>>
>>> 1. How can a geographic area be =93represented=94, since several IP
>>> locators can give access to it.
>>
>> An area could be represented by the coordinates of some of the points =
on
>> its perimeter, or other description of point coordinates and shape
>> identifier.  A volume description would have more possibilities.  One
>> should also consider maybe the projection alternatives.
>>
>>> 2. which resolution mechanism can be used at the source node e.g.
>>> Geo-locator (name)/ Geo-Physical coord.(addr.) to IP locator
>>
>> Yes, resolution mechanism may be needed.
>>
>> But, we currently know two kinds of resolution:
>> - IP address <-> MAC address (ND)
>> - IP address <-> name (DNS)
>>
>> With geonet we'd talk new identifiers like geographical coordinates.  =
If
>> we talked only one such coordinate (say 'latitude'), then we'd need 3
>> new resolution mechanisms:
>> - IP address <-> latitude (protocol IPL)
>> - MAC address <-> latitude (protocol MACL)
>> - name <-> latitude (protocol NL).
>>
>> Maybe the latitude is not sufficient, so we'd need longitude and
>> altitude as well.  This would give a total of 9 new resolution protoco=
ls.
>>
>> On another hand, one may think of combining the lat/long/alt into a
>> single identifier.  That may appear simple at first sight, but may hav=
e
>> its own difficulties, one of which being the necessity of the
>> representation of precision (HDOP, VDOP).
>>
>> Not to mention the difficulty of coming up with an agreed way of
>> representing one single geographical coordinate (it's not because
>> everybody talks GPS now that someone will not talk Baidou tomorrow, as
>> an example).  If I want to locate all the IP sensors of water level
>> measurements where I live I am not able to use the GPS coordinates, I
>> must use coordinates using the Lambert projection (just another exampl=
e).
>>
>> Yes, I am told conversion tools exist (e.g. same GNSS chipset outputs
>> both GPS and Galileo data, using an internal conversion).  But then th=
e
>> question is whether we need conversion tools or resolution tools
>> (protocols).
>>
>> Alex
>>
>>> 3. which resolution mechanism can be used at IP locator (or edges)
>>> if packets would have to transit non IP islands e.g. Geo-locator
>>> (name) to Geo-Physical coord.
>>>
>>> 4. what is the rate and size of the records populating the
>>> resolution database
>>>
>>> 5. at which level of =93stack=94 this information has to be inserted
>>> such that intermediate nodes can successfully reach the destination
>>> as expected by the source.
>>>
>>> Best regards,
>>>
>>> Georgios
>>>
>>> *From:*Papadimitriou, Dimitri (Dimitri)
>>> [mailto:dimitri.papadimitriou@alcatel-lucent.com] *Sent:* zaterdag
>>> 14 december 2013 23:56 *To:* Karagiannis, G. (EWI) *Subject:* RE:
>>> the uncrisp problem
>>>
>>> Hello,
>>>
>>> Reading all the discussions, I wonder why there is no item
>>> discussing the following points:
>>>
>>> At the network wide level
>>>
>>> - Geo-locators (naming the geographic area) vs Geo-physical
>>> coordinates (the actual coordinates of that area)
>>>
>>> Have the same relationship as
>>>
>>> - IP network locators vs none (known as of today)
>>>
>>> Note however at the local level there is distinction between IP
>>> address (logical) and e.g. MAC address (physical)
>>>
>>> Thus there is first a question 1. what a geographic area
>>> =93represents=94 because several IP locators can give access to it.
>>>
>>> Then the =93base=94 problem stems as follows
>>>
>>> 2. which resolution mechanism at the source node e.g. Geo-locator
>>> (name)/ Geo-Physical coord.(addr.) to IP locator
>>>
>>> 3. which resolution mechanism at IP locator (or edges) if packets
>>> would have to transit non IP islands e.g. Geo-locator (name) to
>>> Geo-Physical coord.
>>>
>>> 4. what is the rate and size of the records populating the
>>> resolution database
>>>
>>> 5. at which level of =93stack=94 this information has to be inserted
>>> such that intermediate nodes can successfully reach the destination
>>> as expected by the source.
>>>
>>> Thanks,
>>>
>>> -dimitri.
>>>
>>>
>>>
>>> _______________________________________________ its mailing list
>>> its@ietf.org https://www.ietf.org/mailman/listinfo/its
>>>
>>
>>
>> _______________________________________________
>> its mailing list
>> its@ietf.org
>> https://www.ietf.org/mailman/listinfo/its
>> _______________________________________________
>> its mailing list
>> its@ietf.org
>> https://www.ietf.org/mailman/listinfo/its
>


From farinacci@gmail.com  Wed Jan  8 19:16:23 2014
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From: Dino Farinacci <farinacci@gmail.com>
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To: Carl Reed <creed@opengeospatial.org>
Cc: Alexandru Petrescu <alexandru.petrescu@gmail.com>, Georgios Karagiannis <karagian@cs.utwente.nl>, "<its@ietf.org>" <its@ietf.org>, "<dimitri.papadimitriou@alcatel-lucent.com>" <dimitri.papadimitriou@alcatel-lucent.com>
Subject: Re: [geonet/its] challenges proposed by Dimitri
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Then I think we love the discussion on what accuracy levels we really need.=20=


Dino

> On Jan 8, 2014, at 5:06 PM, "Carl Reed" <creed@opengeospatial.org> wrote:
>=20
> Dino -
>=20
> I am not suggesting using the coordinate system (state plane) used in NC. N=
C is just an exemplar of how to generate a unique identifier based on a coor=
dinate for a geographic feature. There are other algorithms that allow simil=
ar computation of coordinate based unique identifiers.
>=20
> Of course, lat-long coordinates are not unique :-) http://www.ogcnetwork.n=
et/node/338
>=20
> This is why the other part of my email was about making sure that the prop=
er information is provided related to the lat/long coordinates being used.
>=20
> Cheers
>=20
> Carl
>=20
> -----Original Message----- From: Dino Farinacci
> Sent: Wednesday, January 08, 2014 5:34 PM
> To: Carl Reed
> Cc: Alexandru Petrescu ; Georgios Karagiannis ; dimitri.papadimitriou@alca=
tel-lucent.com ; <its@ietf.org>
> Subject: Re: [geonet/its] challenges proposed by Dimitri
>=20
> Then I am not following. Your URL reference illustrates to use a coordinat=
e system that North Carolina uses. GPS coordinates are global, why would you=
 want to use something else?
>=20
> Dino
>=20
>> On Jan 8, 2014, at 3:44 PM, Carl Reed <creed@opengeospatial.org> wrote:
>>=20
>> Dino -
>>=20
>> Thanks.
>>=20
>> I was suggesting an approach to uniquely identify a location without havi=
ng to use lat-long coordinates. The issue of a "boundary" is different. FYI,=
 a boundary of three of more non-intersecting sides/edges (in GIS) is a poly=
gon. All treated the same. ISO 19107:Spatial Schema provides a set of mathem=
atical definitions for various types of 2d and 3d geometry. We use these def=
initions in the OGC - as does OASIS, NENA, and a number of other standards o=
rganizations that work with geometry and location.
>>=20
>> Cheers
>>=20
>> Carl
>>=20
>>=20
>> -----Original Message----- From: Dino Farinacci
>> Sent: Wednesday, January 08, 2014 11:33 AM
>> To: Carl Reed
>> Cc: Alexandru Petrescu ; Georgios Karagiannis ; dimitri.papadimitriou@alc=
atel-lucent.com ; <its@ietf.org>
>> Subject: Re: [geonet/its] challenges proposed by Dimitri
>>=20
>> Yes, but in this case, you need some other value to determine boundary. B=
ecause the center of your property can include me your neighbor if you don't=
 have that other boundary. So radius, triangulation, or four sets of geo-coo=
rdinates are necessary.
>>=20
>> And I would argue some properties are not just hexagons, but octigons or n=
onagons as well. Depends on the granularity you want or need.
>>=20
>> Dino
>>=20
>>> On Jan 8, 2014, at 8:23 AM, Carl Reed <creed@opengeospatial.org> wrote:
>>>=20
>>> Alex -
>>>=20
>>> A very common practice in the land management community is to create a u=
nique parcel identifier based on the coordinates of the centroid of the parc=
el. The approach generates a single PIN based on lat/long, which in the use c=
ase below reduces the number resolution mechanisms.
>>>=20
>>> http://www.hendersoncountync.org/ca/howpins.html
>>>=20
>>> Shows an example. They use state-plane but a similar approach could be u=
sed for lat/long coordinates.
>>>=20
>>> And you also raise the question of coordinate reference systems (CRS) an=
d the requirements perhaps to transform between CRS (also known as re-projec=
tion). Regardless of the approach this group decides to follow, at a minimum=
 the documentation needs to be very clear on the CRS of the coordinate(s) be=
ing used. Simply stating lat/long is unclear and can actually result in sign=
ificant absolute location errors depending on the geoid used for a given lat=
/long pair. The existing location object (LO) definition used in PIDF and a n=
umber of other RFCs very clearly states the relevant EPSG code for the CRS b=
eing used. The approach for specifying a CRS is defined by ISO and the OGC i=
n a variety of documents.
>>>=20
>>> The above may seem a trivial point, but ambiguity in the specification o=
f the CRS for a coordinate set can lead to a number of issues in terms of vi=
sualization, analysis, fusion, analytics and so forth.
>>>=20
>>> Cheers
>>>=20
>>> Carl
>>>=20
>>>=20
>>> -----Original Message----- From: Alexandru Petrescu
>>> Sent: Wednesday, January 08, 2014 4:33 AM
>>> To: karagian@cs.utwente.nl ; dimitri.papadimitriou@alcatel-lucent.com
>>> Cc: its@ietf.org
>>> Subject: Re: [geonet/its] challenges proposed by Dimitri
>>>=20
>>> Hi Georgios,
>>>=20
>>> You are asking for feedback.
>>>=20
>>> I have some thoughts on this.  Far from me any intention to complexify
>>> things.
>>>=20
>>> I will be happy to read others' remarks.
>>>=20
>>> Le 06/01/2014 11:21, karagian@cs.utwente.nl a =C3=A9crit :
>>>> Hi Dimitri,
>>>>=20
>>>> Thank you very much!
>>>>=20
>>>> The questions that you have listed below are very useful and
>>>> therefore I am forwarding your email to the its list!
>>>>=20
>>>> Actually, I agree with the challenges that you described and I will
>>>> try to integrate them in what we have up to now:
>>>>=20
>>>> 1. How can a geographic area be =E2=80=9Crepresented=E2=80=9D, since se=
veral IP
>>>> locators can give access to it.
>>>=20
>>> An area could be represented by the coordinates of some of the points on=

>>> its perimeter, or other description of point coordinates and shape
>>> identifier.  A volume description would have more possibilities.  One
>>> should also consider maybe the projection alternatives.
>>>=20
>>>> 2. which resolution mechanism can be used at the source node e.g.
>>>> Geo-locator (name)/ Geo-Physical coord.(addr.) to IP locator
>>>=20
>>> Yes, resolution mechanism may be needed.
>>>=20
>>> But, we currently know two kinds of resolution:
>>> - IP address <-> MAC address (ND)
>>> - IP address <-> name (DNS)
>>>=20
>>> With geonet we'd talk new identifiers like geographical coordinates.  If=

>>> we talked only one such coordinate (say 'latitude'), then we'd need 3
>>> new resolution mechanisms:
>>> - IP address <-> latitude (protocol IPL)
>>> - MAC address <-> latitude (protocol MACL)
>>> - name <-> latitude (protocol NL).
>>>=20
>>> Maybe the latitude is not sufficient, so we'd need longitude and
>>> altitude as well.  This would give a total of 9 new resolution protocols=
.
>>>=20
>>> On another hand, one may think of combining the lat/long/alt into a
>>> single identifier.  That may appear simple at first sight, but may have
>>> its own difficulties, one of which being the necessity of the
>>> representation of precision (HDOP, VDOP).
>>>=20
>>> Not to mention the difficulty of coming up with an agreed way of
>>> representing one single geographical coordinate (it's not because
>>> everybody talks GPS now that someone will not talk Baidou tomorrow, as
>>> an example).  If I want to locate all the IP sensors of water level
>>> measurements where I live I am not able to use the GPS coordinates, I
>>> must use coordinates using the Lambert projection (just another example)=
.
>>>=20
>>> Yes, I am told conversion tools exist (e.g. same GNSS chipset outputs
>>> both GPS and Galileo data, using an internal conversion).  But then the
>>> question is whether we need conversion tools or resolution tools
>>> (protocols).
>>>=20
>>> Alex
>>>=20
>>>> 3. which resolution mechanism can be used at IP locator (or edges)
>>>> if packets would have to transit non IP islands e.g. Geo-locator
>>>> (name) to Geo-Physical coord.
>>>>=20
>>>> 4. what is the rate and size of the records populating the
>>>> resolution database
>>>>=20
>>>> 5. at which level of =E2=80=9Cstack=E2=80=9D this information has to be=
 inserted
>>>> such that intermediate nodes can successfully reach the destination
>>>> as expected by the source.
>>>>=20
>>>> Best regards,
>>>>=20
>>>> Georgios
>>>>=20
>>>> *From:*Papadimitriou, Dimitri (Dimitri)
>>>> [mailto:dimitri.papadimitriou@alcatel-lucent.com] *Sent:* zaterdag
>>>> 14 december 2013 23:56 *To:* Karagiannis, G. (EWI) *Subject:* RE:
>>>> the uncrisp problem
>>>>=20
>>>> Hello,
>>>>=20
>>>> Reading all the discussions, I wonder why there is no item
>>>> discussing the following points:
>>>>=20
>>>> At the network wide level
>>>>=20
>>>> - Geo-locators (naming the geographic area) vs Geo-physical
>>>> coordinates (the actual coordinates of that area)
>>>>=20
>>>> Have the same relationship as
>>>>=20
>>>> - IP network locators vs none (known as of today)
>>>>=20
>>>> Note however at the local level there is distinction between IP
>>>> address (logical) and e.g. MAC address (physical)
>>>>=20
>>>> Thus there is first a question 1. what a geographic area
>>>> =E2=80=9Crepresents=E2=80=9D because several IP locators can give acces=
s to it.
>>>>=20
>>>> Then the =E2=80=9Cbase=E2=80=9D problem stems as follows
>>>>=20
>>>> 2. which resolution mechanism at the source node e.g. Geo-locator
>>>> (name)/ Geo-Physical coord.(addr.) to IP locator
>>>>=20
>>>> 3. which resolution mechanism at IP locator (or edges) if packets
>>>> would have to transit non IP islands e.g. Geo-locator (name) to
>>>> Geo-Physical coord.
>>>>=20
>>>> 4. what is the rate and size of the records populating the
>>>> resolution database
>>>>=20
>>>> 5. at which level of =E2=80=9Cstack=E2=80=9D this information has to be=
 inserted
>>>> such that intermediate nodes can successfully reach the destination
>>>> as expected by the source.
>>>>=20
>>>> Thanks,
>>>>=20
>>>> -dimitri.
>>>>=20
>>>>=20
>>>>=20
>>>> _______________________________________________ its mailing list
>>>> its@ietf.org https://www.ietf.org/mailman/listinfo/its
>>>=20
>>>=20
>>> _______________________________________________
>>> its mailing list
>>> its@ietf.org
>>> https://www.ietf.org/mailman/listinfo/its
>>> _______________________________________________
>>> its mailing list
>>> its@ietf.org
>>> https://www.ietf.org/mailman/listinfo/its
>=20

From karagian@cs.utwente.nl  Thu Jan  9 01:12:35 2014
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From: <karagian@cs.utwente.nl>
To: <creed@opengeospatial.org>
Thread-Topic: [geonet/its] challenges proposed by Dimitri
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Cc: alexandru.petrescu@gmail.com, farinacci@gmail.com, its@ietf.org, dimitri.papadimitriou@alcatel-lucent.com
Subject: Re: [geonet/its] challenges proposed by Dimitri
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Hi Carl,

Thanks,
Is it then possible to describe this issue in such a way that we can includ=
e it as a challenge/work item in the charter and/or in the problem statemen=
t draft?
Please take into account the comments of Dino!

Best regards,
Georgios


> -----Original Message-----
> From: Carl Reed [mailto:creed@opengeospatial.org]
> Sent: woensdag 8 januari 2014 17:23
> To: Alexandru Petrescu; Karagiannis, G. (EWI); dimitri.papadimitriou@alca=
tel-
> lucent.com
> Cc: its@ietf.org
> Subject: Re: [geonet/its] challenges proposed by Dimitri
>=20
> Alex -
>=20
> A very common practice in the land management community is to create a
> unique parcel identifier based on the coordinates of the centroid of the
> parcel. The approach generates a single PIN based on lat/long, which in t=
he
> use case below reduces the number resolution mechanisms.
>=20
> http://www.hendersoncountync.org/ca/howpins.html
>=20
> Shows an example. They use state-plane but a similar approach could be
> used for lat/long coordinates.
>=20
> And you also raise the question of coordinate reference systems (CRS) and
> the requirements perhaps to transform between CRS (also known as re-
> projection). Regardless of the approach this group decides to follow, at =
a
> minimum the documentation needs to be very clear on the CRS of the
> coordinate(s) being used. Simply stating lat/long is unclear and can actu=
ally
> result in significant absolute location errors depending on the geoid use=
d for
> a given lat/long pair. The existing location object (LO) definition used =
in PIDF
> and a number of other RFCs very clearly states the relevant EPSG code for
> the CRS being used. The approach for specifying a CRS is defined by ISO a=
nd
> the OGC in a variety of documents.
>=20
> The above may seem a trivial point, but ambiguity in the specification of=
 the
> CRS for a coordinate set can lead to a number of issues in terms of
> visualization, analysis, fusion, analytics and so forth.
>=20
> Cheers
>=20
> Carl
>=20
>=20
> -----Original Message-----
> From: Alexandru Petrescu
> Sent: Wednesday, January 08, 2014 4:33 AM
> To: karagian@cs.utwente.nl ; dimitri.papadimitriou@alcatel-lucent.com
> Cc: its@ietf.org
> Subject: Re: [geonet/its] challenges proposed by Dimitri
>=20
> Hi Georgios,
>=20
> You are asking for feedback.
>=20
> I have some thoughts on this.  Far from me any intention to complexify
> things.
>=20
> I will be happy to read others' remarks.
>=20
> Le 06/01/2014 11:21, karagian@cs.utwente.nl a =E9crit :
> > Hi Dimitri,
> >
> > Thank you very much!
> >
> > The questions that you have listed below are very useful and therefore
> > I am forwarding your email to the its list!
> >
> > Actually, I agree with the challenges that you described and I will
> > try to integrate them in what we have up to now:
> >
> > 1. How can a geographic area be "represented", since several IP
> > locators can give access to it.
>=20
> An area could be represented by the coordinates of some of the points on =
its
> perimeter, or other description of point coordinates and shape identifier=
.  A
> volume description would have more possibilities.  One should also consid=
er
> maybe the projection alternatives.
>=20
> > 2. which resolution mechanism can be used at the source node e.g.
> > Geo-locator (name)/ Geo-Physical coord.(addr.) to IP locator
>=20
> Yes, resolution mechanism may be needed.
>=20
> But, we currently know two kinds of resolution:
> - IP address <-> MAC address (ND)
> - IP address <-> name (DNS)
>=20
> With geonet we'd talk new identifiers like geographical coordinates.  If =
we
> talked only one such coordinate (say 'latitude'), then we'd need 3 new
> resolution mechanisms:
> - IP address <-> latitude (protocol IPL)
> - MAC address <-> latitude (protocol MACL)
> - name <-> latitude (protocol NL).
>=20
> Maybe the latitude is not sufficient, so we'd need longitude and altitude=
 as
> well.  This would give a total of 9 new resolution protocols.
>=20
> On another hand, one may think of combining the lat/long/alt into a singl=
e
> identifier.  That may appear simple at first sight, but may have its own
> difficulties, one of which being the necessity of the representation of
> precision (HDOP, VDOP).
>=20
> Not to mention the difficulty of coming up with an agreed way of
> representing one single geographical coordinate (it's not because everybo=
dy
> talks GPS now that someone will not talk Baidou tomorrow, as an example).
> If I want to locate all the IP sensors of water level measurements where =
I live
> I am not able to use the GPS coordinates, I must use coordinates using th=
e
> Lambert projection (just another example).
>=20
> Yes, I am told conversion tools exist (e.g. same GNSS chipset outputs bot=
h
> GPS and Galileo data, using an internal conversion).  But then the questi=
on is
> whether we need conversion tools or resolution tools (protocols).
>=20
> Alex
>=20
> > 3. which resolution mechanism can be used at IP locator (or edges) if
> > packets would have to transit non IP islands e.g. Geo-locator
> > (name) to Geo-Physical coord.
> >
> > 4. what is the rate and size of the records populating the resolution
> > database
> >
> > 5. at which level of "stack" this information has to be inserted such
> > that intermediate nodes can successfully reach the destination as
> > expected by the source.
> >
> > Best regards,
> >
> > Georgios
> >
> > *From:*Papadimitriou, Dimitri (Dimitri)
> > [mailto:dimitri.papadimitriou@alcatel-lucent.com] *Sent:* zaterdag
> > 14 december 2013 23:56 *To:* Karagiannis, G. (EWI) *Subject:* RE:
> > the uncrisp problem
> >
> > Hello,
> >
> > Reading all the discussions, I wonder why there is no item discussing
> > the following points:
> >
> > At the network wide level
> >
> > - Geo-locators (naming the geographic area) vs Geo-physical
> > coordinates (the actual coordinates of that area)
> >
> > Have the same relationship as
> >
> > - IP network locators vs none (known as of today)
> >
> > Note however at the local level there is distinction between IP
> > address (logical) and e.g. MAC address (physical)
> >
> > Thus there is first a question 1. what a geographic area "represents"
> > because several IP locators can give access to it.
> >
> > Then the "base" problem stems as follows
> >
> > 2. which resolution mechanism at the source node e.g. Geo-locator
> > (name)/ Geo-Physical coord.(addr.) to IP locator
> >
> > 3. which resolution mechanism at IP locator (or edges) if packets
> > would have to transit non IP islands e.g. Geo-locator (name) to
> > Geo-Physical coord.
> >
> > 4. what is the rate and size of the records populating the resolution
> > database
> >
> > 5. at which level of "stack" this information has to be inserted such
> > that intermediate nodes can successfully reach the destination as
> > expected by the source.
> >
> > Thanks,
> >
> > -dimitri.
> >
> >
> >
> > _______________________________________________ its mailing list
> > its@ietf.org https://www.ietf.org/mailman/listinfo/its
> >
>=20
>=20
> _______________________________________________
> its mailing list
> its@ietf.org
> https://www.ietf.org/mailman/listinfo/its


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From: <karagian@cs.utwente.nl>
To: <dimitri.papadimitriou@alcatel-lucent.com>
Thread-Topic: [geonet/its] challenges proposed by Dimitri
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Subject: Re: [geonet/its] challenges proposed by Dimitri
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Hi Dimitri,

Thanks, so you mean that among others we should focus on:

How could a locator could be mapped to a geographic area, and vice versa, w=
hen a m:n relationship exists between locators and geographic areas?=20
The m:n relationship exists when a locator can provide access to m geograph=
ic areas and on the other hand a given geographic area could provide access=
 to n locators.

Best regards,
Georgios


> -----Original Message-----
> From: Papadimitriou, Dimitri (Dimitri) [mailto:dimitri.papadimitriou@alca=
tel-
> lucent.com]
> Sent: donderdag 9 januari 2014 11:12
> To: Karagiannis, G. (EWI)
> Subject: RE: [geonet/its] challenges proposed by Dimitri
>=20
> Hello,
>=20
> Well the question doesn't stem from the representation itself (they exist=
 and
> IETF is not the place to standardize them --at best detail their succintn=
ess vs.
> precision knowing that our recording format might be constraining) but mo=
re
> importantly from the relationship (and implication) to associated locator=
s.
>=20
> In the general case we would have to deal with a m:n relationship (n loca=
tors
> can provide access to a given geographic area and on the other hand a giv=
en
> locator could provide access to m geographic areas).
>=20
> Thanks,
> -dimitri.
>=20
> > -----Original Message-----
> > From: karagian@cs.utwente.nl [mailto:karagian@cs.utwente.nl]
> > Sent: Thursday, January 09, 2014 10:12
> > To: creed@opengeospatial.org
> > Cc: its@ietf.org; alexandru.petrescu@gmail.com; Papadimitriou, Dimitri
> > (Dimitri); farinacci@gmail.com
> > Subject: RE: [geonet/its] challenges proposed by Dimitri
> >
> > Hi Carl,
> >
> > Thanks,
> > Is it then possible to describe this issue in such a way that we can
> > include it as a challenge/work item in the charter and/or in the
> > problem statement draft?
> > Please take into account the comments of Dino!
> >
> > Best regards,
> > Georgios
> >
> >
> > > -----Original Message-----
> > > From: Carl Reed [mailto:creed@opengeospatial.org]
> > > Sent: woensdag 8 januari 2014 17:23
> > > To: Alexandru Petrescu; Karagiannis, G. (EWI);
> > dimitri.papadimitriou@alcatel-
> > > lucent.com
> > > Cc: its@ietf.org
> > > Subject: Re: [geonet/its] challenges proposed by Dimitri
> > >
> > > Alex -
> > >
> > > A very common practice in the land management community is to create
> > > a unique parcel identifier based on the coordinates of the centroid
> > > of the parcel. The approach generates a single PIN based on
> > > lat/long, which in
> > the
> > > use case below reduces the number resolution mechanisms.
> > >
> > > http://www.hendersoncountync.org/ca/howpins.html
> > >
> > > Shows an example. They use state-plane but a similar approach could
> > > be used for lat/long coordinates.
> > >
> > > And you also raise the question of coordinate reference systems
> > > (CRS)
> > and
> > > the requirements perhaps to transform between CRS (also known as re-
> > > projection). Regardless of the approach this group decides to
> > > follow, at
> > a
> > > minimum the documentation needs to be very clear on the CRS of the
> > > coordinate(s) being used. Simply stating lat/long is unclear and can
> > actually
> > > result in significant absolute location errors depending on the
> > > geoid
> > used for
> > > a given lat/long pair. The existing location object (LO) definition
> > > used
> > in PIDF
> > > and a number of other RFCs very clearly states the relevant EPSG
> > > code
> > for
> > > the CRS being used. The approach for specifying a CRS is defined by
> > > ISO
> > and
> > > the OGC in a variety of documents.
> > >
> > > The above may seem a trivial point, but ambiguity in the
> > > specification
> > of the
> > > CRS for a coordinate set can lead to a number of issues in terms of
> > > visualization, analysis, fusion, analytics and so forth.
> > >
> > > Cheers
> > >
> > > Carl
> > >
> > >
> > > -----Original Message-----
> > > From: Alexandru Petrescu
> > > Sent: Wednesday, January 08, 2014 4:33 AM
> > > To: karagian@cs.utwente.nl ;
> > > dimitri.papadimitriou@alcatel-lucent.com
> > > Cc: its@ietf.org
> > > Subject: Re: [geonet/its] challenges proposed by Dimitri
> > >
> > > Hi Georgios,
> > >
> > > You are asking for feedback.
> > >
> > > I have some thoughts on this.  Far from me any intention to
> > > complexify things.
> > >
> > > I will be happy to read others' remarks.
> > >
> > > Le 06/01/2014 11:21, karagian@cs.utwente.nl a =E9crit :
> > > > Hi Dimitri,
> > > >
> > > > Thank you very much!
> > > >
> > > > The questions that you have listed below are very useful and
> > > > therefore I am forwarding your email to the its list!
> > > >
> > > > Actually, I agree with the challenges that you described and I
> > > > will try to integrate them in what we have up to now:
> > > >
> > > > 1. How can a geographic area be "represented", since several IP
> > > > locators can give access to it.
> > >
> > > An area could be represented by the coordinates of some of the
> > > points on
> > its
> > > perimeter, or other description of point coordinates and shape
> > identifier.  A
> > > volume description would have more possibilities.  One should also
> > consider
> > > maybe the projection alternatives.
> > >
> > > > 2. which resolution mechanism can be used at the source node e.g.
> > > > Geo-locator (name)/ Geo-Physical coord.(addr.) to IP locator
> > >
> > > Yes, resolution mechanism may be needed.
> > >
> > > But, we currently know two kinds of resolution:
> > > - IP address <-> MAC address (ND)
> > > - IP address <-> name (DNS)
> > >
> > > With geonet we'd talk new identifiers like geographical coordinates.
> > > If
> > we
> > > talked only one such coordinate (say 'latitude'), then we'd need 3
> > > new resolution mechanisms:
> > > - IP address <-> latitude (protocol IPL)
> > > - MAC address <-> latitude (protocol MACL)
> > > - name <-> latitude (protocol NL).
> > >
> > > Maybe the latitude is not sufficient, so we'd need longitude and
> > altitude as
> > > well.  This would give a total of 9 new resolution protocols.
> > >
> > > On another hand, one may think of combining the lat/long/alt into a
> > single
> > > identifier.  That may appear simple at first sight, but may have its
> > > own difficulties, one of which being the necessity of the
> > > representation of precision (HDOP, VDOP).
> > >
> > > Not to mention the difficulty of coming up with an agreed way of
> > > representing one single geographical coordinate (it's not because
> > everybody
> > > talks GPS now that someone will not talk Baidou tomorrow, as an
> > example).
> > > If I want to locate all the IP sensors of water level measurements
> > > where
> > I live
> > > I am not able to use the GPS coordinates, I must use coordinates
> > > using
> > the
> > > Lambert projection (just another example).
> > >
> > > Yes, I am told conversion tools exist (e.g. same GNSS chipset
> > > outputs
> > both
> > > GPS and Galileo data, using an internal conversion).  But then the
> > question is
> > > whether we need conversion tools or resolution tools (protocols).
> > >
> > > Alex
> > >
> > > > 3. which resolution mechanism can be used at IP locator (or edges)
> > > > if packets would have to transit non IP islands e.g. Geo-locator
> > > > (name) to Geo-Physical coord.
> > > >
> > > > 4. what is the rate and size of the records populating the
> > > > resolution database
> > > >
> > > > 5. at which level of "stack" this information has to be inserted
> > > > such that intermediate nodes can successfully reach the
> > > > destination as expected by the source.
> > > >
> > > > Best regards,
> > > >
> > > > Georgios
> > > >
> > > > *From:*Papadimitriou, Dimitri (Dimitri)
> > > > [mailto:dimitri.papadimitriou@alcatel-lucent.com] *Sent:* zaterdag
> > > > 14 december 2013 23:56 *To:* Karagiannis, G. (EWI) *Subject:* RE:
> > > > the uncrisp problem
> > > >
> > > > Hello,
> > > >
> > > > Reading all the discussions, I wonder why there is no item
> > > > discussing the following points:
> > > >
> > > > At the network wide level
> > > >
> > > > - Geo-locators (naming the geographic area) vs Geo-physical
> > > > coordinates (the actual coordinates of that area)
> > > >
> > > > Have the same relationship as
> > > >
> > > > - IP network locators vs none (known as of today)
> > > >
> > > > Note however at the local level there is distinction between IP
> > > > address (logical) and e.g. MAC address (physical)
> > > >
> > > > Thus there is first a question 1. what a geographic area "represent=
s"
> > > > because several IP locators can give access to it.
> > > >
> > > > Then the "base" problem stems as follows
> > > >
> > > > 2. which resolution mechanism at the source node e.g. Geo-locator
> > > > (name)/ Geo-Physical coord.(addr.) to IP locator
> > > >
> > > > 3. which resolution mechanism at IP locator (or edges) if packets
> > > > would have to transit non IP islands e.g. Geo-locator (name) to
> > > > Geo-Physical coord.
> > > >
> > > > 4. what is the rate and size of the records populating the
> > > > resolution database
> > > >
> > > > 5. at which level of "stack" this information has to be inserted
> > > > such that intermediate nodes can successfully reach the
> > > > destination as expected by the source.
> > > >
> > > > Thanks,
> > > >
> > > > -dimitri.
> > > >
> > > >
> > > >
> > > > _______________________________________________ its
> mailing list
> > > > its@ietf.org https://www.ietf.org/mailman/listinfo/its
> > > >
> > >
> > >
> > > _______________________________________________
> > > its mailing list
> > > its@ietf.org
> > > https://www.ietf.org/mailman/listinfo/its


From karagian@cs.utwente.nl  Thu Jan  9 03:02:21 2014
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From: <karagian@cs.utwente.nl>
To: <dimitri.papadimitriou@alcatel-lucent.com>
Thread-Topic: [geonet/its] challenges proposed by Dimitri
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Date: Thu, 9 Jan 2014 11:02:01 +0000
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Hi Dimitri,

Okay, your provided description of the issue is more accurate:

Representation of geographic area into locators (and vice versa) infer an i=
mportant  trade-off between  succinctness (memory space) vs. precision (suc=
cess rate).
As we are dealing with indirect access to this information (via locators) t=
he fundamental question becomes how to translate this information in resolu=
tion records in case multiple representation are considered.

Best regards,
Georgios


> -----Original Message-----
> From: Papadimitriou, Dimitri (Dimitri) [mailto:dimitri.papadimitriou@alca=
tel-
> lucent.com]
> Sent: donderdag 9 januari 2014 11:54
> To: Karagiannis, G. (EWI)
> Subject: RE: [geonet/its] challenges proposed by Dimitri
>=20
> Hi Georgios,
>=20
> It is important to observe that:
>=20
> Representation (of geographic area) show the following tradeoff between
> succintness (memory space) vs. precision (success rate).
>=20
> As we are dealing with indirect access to this information (via locators)=
 the
> fundamental question becomes how to translate this information in
> resolution records in case multiple representation are considered.
>=20
> Thanks,
> -dimitri.
> > -----Original Message-----
> > From: karagian@cs.utwente.nl [mailto:karagian@cs.utwente.nl]
> > Sent: Thursday, January 09, 2014 11:29
> > To: Papadimitriou, Dimitri (Dimitri)
> > Cc: its@ietf.org
> > Subject: RE: [geonet/its] challenges proposed by Dimitri
> >
> > Hi Dimitri,
> >
> > Thanks, so you mean that among others we should focus on:
> >
> > How could a locator could be mapped to a geographic area, and vice
> > versa, when a m:n relationship exists between locators and geographic
> areas?
> > The m:n relationship exists when a locator can provide access to m
> > geographic areas and on the other hand a given geographic area could
> > provide access to n locators.
> >
> > Best regards,
> > Georgios
> >
> >
> > > -----Original Message-----
> > > From: Papadimitriou, Dimitri (Dimitri)
> > [mailto:dimitri.papadimitriou@alcatel-
> > > lucent.com]
> > > Sent: donderdag 9 januari 2014 11:12
> > > To: Karagiannis, G. (EWI)
> > > Subject: RE: [geonet/its] challenges proposed by Dimitri
> > >
> > > Hello,
> > >
> > > Well the question doesn't stem from the representation itself (they
> > exist and
> > > IETF is not the place to standardize them --at best detail their
> > succintness vs.
> > > precision knowing that our recording format might be constraining)
> > > but
> > more
> > > importantly from the relationship (and implication) to associated
> > locators.
> > >
> > > In the general case we would have to deal with a m:n relationship (n
> > locators
> > > can provide access to a given geographic area and on the other hand
> > > a
> > given
> > > locator could provide access to m geographic areas).
> > >
> > > Thanks,
> > > -dimitri.
> > >
> > > > -----Original Message-----
> > > > From: karagian@cs.utwente.nl [mailto:karagian@cs.utwente.nl]
> > > > Sent: Thursday, January 09, 2014 10:12
> > > > To: creed@opengeospatial.org
> > > > Cc: its@ietf.org; alexandru.petrescu@gmail.com; Papadimitriou,
> > > > Dimitri (Dimitri); farinacci@gmail.com
> > > > Subject: RE: [geonet/its] challenges proposed by Dimitri
> > > >
> > > > Hi Carl,
> > > >
> > > > Thanks,
> > > > Is it then possible to describe this issue in such a way that we
> > > > can include it as a challenge/work item in the charter and/or in
> > > > the problem statement draft?
> > > > Please take into account the comments of Dino!
> > > >
> > > > Best regards,
> > > > Georgios
> > > >
> > > >
> > > > > -----Original Message-----
> > > > > From: Carl Reed [mailto:creed@opengeospatial.org]
> > > > > Sent: woensdag 8 januari 2014 17:23
> > > > > To: Alexandru Petrescu; Karagiannis, G. (EWI);
> > > > dimitri.papadimitriou@alcatel-
> > > > > lucent.com
> > > > > Cc: its@ietf.org
> > > > > Subject: Re: [geonet/its] challenges proposed by Dimitri
> > > > >
> > > > > Alex -
> > > > >
> > > > > A very common practice in the land management community is to
> > > > > create a unique parcel identifier based on the coordinates of
> > > > > the centroid of the parcel. The approach generates a single PIN
> > > > > based on lat/long, which in
> > > > the
> > > > > use case below reduces the number resolution mechanisms.
> > > > >
> > > > > http://www.hendersoncountync.org/ca/howpins.html
> > > > >
> > > > > Shows an example. They use state-plane but a similar approach
> > > > > could be used for lat/long coordinates.
> > > > >
> > > > > And you also raise the question of coordinate reference systems
> > > > > (CRS)
> > > > and
> > > > > the requirements perhaps to transform between CRS (also known as
> > > > > re- projection). Regardless of the approach this group decides
> > > > > to follow, at
> > > > a
> > > > > minimum the documentation needs to be very clear on the CRS of
> > > > > the
> > > > > coordinate(s) being used. Simply stating lat/long is unclear and
> > > > > can
> > > > actually
> > > > > result in significant absolute location errors depending on the
> > > > > geoid
> > > > used for
> > > > > a given lat/long pair. The existing location object (LO)
> > > > > definition used
> > > > in PIDF
> > > > > and a number of other RFCs very clearly states the relevant EPSG
> > > > > code
> > > > for
> > > > > the CRS being used. The approach for specifying a CRS is defined
> > > > > by ISO
> > > > and
> > > > > the OGC in a variety of documents.
> > > > >
> > > > > The above may seem a trivial point, but ambiguity in the
> > > > > specification
> > > > of the
> > > > > CRS for a coordinate set can lead to a number of issues in terms
> > > > > of visualization, analysis, fusion, analytics and so forth.
> > > > >
> > > > > Cheers
> > > > >
> > > > > Carl
> > > > >
> > > > >
> > > > > -----Original Message-----
> > > > > From: Alexandru Petrescu
> > > > > Sent: Wednesday, January 08, 2014 4:33 AM
> > > > > To: karagian@cs.utwente.nl ;
> > > > > dimitri.papadimitriou@alcatel-lucent.com
> > > > > Cc: its@ietf.org
> > > > > Subject: Re: [geonet/its] challenges proposed by Dimitri
> > > > >
> > > > > Hi Georgios,
> > > > >
> > > > > You are asking for feedback.
> > > > >
> > > > > I have some thoughts on this.  Far from me any intention to
> > > > > complexify things.
> > > > >
> > > > > I will be happy to read others' remarks.
> > > > >
> > > > > Le 06/01/2014 11:21, karagian@cs.utwente.nl a =E9crit :
> > > > > > Hi Dimitri,
> > > > > >
> > > > > > Thank you very much!
> > > > > >
> > > > > > The questions that you have listed below are very useful and
> > > > > > therefore I am forwarding your email to the its list!
> > > > > >
> > > > > > Actually, I agree with the challenges that you described and I
> > > > > > will try to integrate them in what we have up to now:
> > > > > >
> > > > > > 1. How can a geographic area be "represented", since several
> > > > > > IP locators can give access to it.
> > > > >
> > > > > An area could be represented by the coordinates of some of the
> > > > > points on
> > > > its
> > > > > perimeter, or other description of point coordinates and shape
> > > > identifier.  A
> > > > > volume description would have more possibilities.  One should
> > > > > also
> > > > consider
> > > > > maybe the projection alternatives.
> > > > >
> > > > > > 2. which resolution mechanism can be used at the source node e.=
g.
> > > > > > Geo-locator (name)/ Geo-Physical coord.(addr.) to IP locator
> > > > >
> > > > > Yes, resolution mechanism may be needed.
> > > > >
> > > > > But, we currently know two kinds of resolution:
> > > > > - IP address <-> MAC address (ND)
> > > > > - IP address <-> name (DNS)
> > > > >
> > > > > With geonet we'd talk new identifiers like geographical coordinat=
es.
> > > > > If
> > > > we
> > > > > talked only one such coordinate (say 'latitude'), then we'd need
> > > > > 3 new resolution mechanisms:
> > > > > - IP address <-> latitude (protocol IPL)
> > > > > - MAC address <-> latitude (protocol MACL)
> > > > > - name <-> latitude (protocol NL).
> > > > >
> > > > > Maybe the latitude is not sufficient, so we'd need longitude and
> > > > altitude as
> > > > > well.  This would give a total of 9 new resolution protocols.
> > > > >
> > > > > On another hand, one may think of combining the lat/long/alt
> > > > > into a
> > > > single
> > > > > identifier.  That may appear simple at first sight, but may have
> > > > > its own difficulties, one of which being the necessity of the
> > > > > representation of precision (HDOP, VDOP).
> > > > >
> > > > > Not to mention the difficulty of coming up with an agreed way of
> > > > > representing one single geographical coordinate (it's not
> > > > > because
> > > > everybody
> > > > > talks GPS now that someone will not talk Baidou tomorrow, as an
> > > > example).
> > > > > If I want to locate all the IP sensors of water level
> > > > > measurements where
> > > > I live
> > > > > I am not able to use the GPS coordinates, I must use coordinates
> > > > > using
> > > > the
> > > > > Lambert projection (just another example).
> > > > >
> > > > > Yes, I am told conversion tools exist (e.g. same GNSS chipset
> > > > > outputs
> > > > both
> > > > > GPS and Galileo data, using an internal conversion).  But then
> > > > > the
> > > > question is
> > > > > whether we need conversion tools or resolution tools (protocols).
> > > > >
> > > > > Alex
> > > > >
> > > > > > 3. which resolution mechanism can be used at IP locator (or
> > > > > > edges) if packets would have to transit non IP islands e.g.
> > > > > > Geo-locator
> > > > > > (name) to Geo-Physical coord.
> > > > > >
> > > > > > 4. what is the rate and size of the records populating the
> > > > > > resolution database
> > > > > >
> > > > > > 5. at which level of "stack" this information has to be
> > > > > > inserted such that intermediate nodes can successfully reach
> > > > > > the destination as expected by the source.
> > > > > >
> > > > > > Best regards,
> > > > > >
> > > > > > Georgios
> > > > > >
> > > > > > *From:*Papadimitriou, Dimitri (Dimitri)
> > > > > > [mailto:dimitri.papadimitriou@alcatel-lucent.com] *Sent:*
> > > > > > zaterdag
> > > > > > 14 december 2013 23:56 *To:* Karagiannis, G. (EWI) *Subject:* R=
E:
> > > > > > the uncrisp problem
> > > > > >
> > > > > > Hello,
> > > > > >
> > > > > > Reading all the discussions, I wonder why there is no item
> > > > > > discussing the following points:
> > > > > >
> > > > > > At the network wide level
> > > > > >
> > > > > > - Geo-locators (naming the geographic area) vs Geo-physical
> > > > > > coordinates (the actual coordinates of that area)
> > > > > >
> > > > > > Have the same relationship as
> > > > > >
> > > > > > - IP network locators vs none (known as of today)
> > > > > >
> > > > > > Note however at the local level there is distinction between
> > > > > > IP address (logical) and e.g. MAC address (physical)
> > > > > >
> > > > > > Thus there is first a question 1. what a geographic area
> > "represents"
> > > > > > because several IP locators can give access to it.
> > > > > >
> > > > > > Then the "base" problem stems as follows
> > > > > >
> > > > > > 2. which resolution mechanism at the source node e.g.
> > > > > > Geo-locator (name)/ Geo-Physical coord.(addr.) to IP locator
> > > > > >
> > > > > > 3. which resolution mechanism at IP locator (or edges) if
> > > > > > packets would have to transit non IP islands e.g. Geo-locator
> > > > > > (name) to Geo-Physical coord.
> > > > > >
> > > > > > 4. what is the rate and size of the records populating the
> > > > > > resolution database
> > > > > >
> > > > > > 5. at which level of "stack" this information has to be
> > > > > > inserted such that intermediate nodes can successfully reach
> > > > > > the destination as expected by the source.
> > > > > >
> > > > > > Thanks,
> > > > > >
> > > > > > -dimitri.
> > > > > >
> > > > > >
> > > > > >
> > > > > > _______________________________________________ its
> > > mailing list
> > > > > > its@ietf.org https://www.ietf.org/mailman/listinfo/its
> > > > > >
> > > > >
> > > > >
> > > > > _______________________________________________
> > > > > its mailing list
> > > > > its@ietf.org
> > > > > https://www.ietf.org/mailman/listinfo/its


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Date: Thu, 09 Jan 2014 17:31:46 +0100
From: Alexandru Petrescu <alexandru.petrescu@gmail.com>
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Cc: Georgios Karagiannis <karagian@cs.utwente.nl>, its@ietf.org, dimitri.papadimitriou@alcatel-lucent.com
Subject: Re: [geonet/its] challenges proposed by Dimitri
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Le 09/01/2014 00:44, Carl Reed a écrit :
> Dino -
>
> Thanks.
>
> I was suggesting an approach to uniquely identify a location without
>  having to use lat-long coordinates. The issue of a "boundary" is
> different. FYI, a boundary of three of more non-intersecting
> sides/edges (in GIS) is a polygon. All treated the same. ISO
> 19107:Spatial Schema provides a set of mathematical definitions for
> various types of 2d and 3d geometry. We use these definitions in the
> OGC - as does OASIS, NENA, and a number of other standards
> organizations that work with geometry and location.

Carl - that sounds interesting.

I wonder whether there exist some RFC or draft that tells how to encode
or transmit geographical coordinates?  We could look at the proposed
way, and try to understand it?

Alex

>
> Cheers
>
> Carl
>
>
> -----Original Message----- From: Dino Farinacci Sent: Wednesday,
> January 08, 2014 11:33 AM To: Carl Reed Cc: Alexandru Petrescu ;
> Georgios Karagiannis ; dimitri.papadimitriou@alcatel-lucent.com ;
> <its@ietf.org> Subject: Re: [geonet/its] challenges proposed by
> Dimitri
>
> Yes, but in this case, you need some other value to determine
> boundary. Because the center of your property can include me your
> neighbor if you don't have that other boundary. So radius,
> triangulation, or four sets of geo-coordinates are necessary.
>
> And I would argue some properties are not just hexagons, but octigons
> or nonagons as well. Depends on the granularity you want or need.
>
> Dino
>
> On Jan 8, 2014, at 8:23 AM, Carl Reed <creed@opengeospatial.org>
> wrote:
>
>> Alex -
>>
>> A very common practice in the land management community is to
>> create a unique parcel identifier based on the coordinates of the
>> centroid of the parcel. The approach generates a single PIN based
>> on lat/long, which in the use case below reduces the number
>> resolution mechanisms.
>>
>> http://www.hendersoncountync.org/ca/howpins.html
>>
>> Shows an example. They use state-plane but a similar approach could
>> be used for lat/long coordinates.
>>
>> And you also raise the question of coordinate reference systems
>> (CRS) and the requirements perhaps to transform between CRS (also
>> known as re-projection). Regardless of the approach this group
>> decides to follow, at a minimum the documentation needs to be very
>> clear on the CRS of the coordinate(s) being used. Simply stating
>> lat/long is unclear and can actually result in significant absolute
>> location errors depending on the geoid used for a given lat/long
>> pair. The existing location object (LO) definition used in PIDF and
>> a number of other RFCs very clearly states the relevant EPSG code
>> for the CRS being used. The approach for specifying a CRS is
>> defined by ISO and the OGC in a variety of documents.
>>
>> The above may seem a trivial point, but ambiguity in the
>> specification of the CRS for a coordinate set can lead to a number
>> of issues in terms of visualization, analysis, fusion, analytics
>> and so forth.
>>
>> Cheers
>>
>> Carl
>>
>>
>> -----Original Message----- From: Alexandru Petrescu Sent:
>> Wednesday, January 08, 2014 4:33 AM To: karagian@cs.utwente.nl ;
>> dimitri.papadimitriou@alcatel-lucent.com Cc: its@ietf.org Subject:
>> Re: [geonet/its] challenges proposed by Dimitri
>>
>> Hi Georgios,
>>
>> You are asking for feedback.
>>
>> I have some thoughts on this.  Far from me any intention to
>> complexify things.
>>
>> I will be happy to read others' remarks.
>>
>> Le 06/01/2014 11:21, karagian@cs.utwente.nl a écrit :
>>> Hi Dimitri,
>>>
>>> Thank you very much!
>>>
>>> The questions that you have listed below are very useful and
>>> therefore I am forwarding your email to the its list!
>>>
>>> Actually, I agree with the challenges that you described and I
>>> will try to integrate them in what we have up to now:
>>>
>>> 1. How can a geographic area be represented, since several IP
>>> locators can give access to it.
>>
>> An area could be represented by the coordinates of some of the
>> points on its perimeter, or other description of point coordinates
>> and shape identifier.  A volume description would have more
>> possibilities.  One should also consider maybe the projection
>> alternatives.
>>
>>> 2. which resolution mechanism can be used at the source node
>>> e.g. Geo-locator (name)/ Geo-Physical coord.(addr.) to IP
>>> locator
>>
>> Yes, resolution mechanism may be needed.
>>
>> But, we currently know two kinds of resolution: - IP address <->
>> MAC address (ND) - IP address <-> name (DNS)
>>
>> With geonet we'd talk new identifiers like geographical
>> coordinates.  If we talked only one such coordinate (say
>> 'latitude'), then we'd need 3 new resolution mechanisms: - IP
>> address <-> latitude (protocol IPL) - MAC address <-> latitude
>> (protocol MACL) - name <-> latitude (protocol NL).
>>
>> Maybe the latitude is not sufficient, so we'd need longitude and
>> altitude as well.  This would give a total of 9 new resolution
>> protocols.
>>
>> On another hand, one may think of combining the lat/long/alt into
>> a single identifier.  That may appear simple at first sight, but
>> may have its own difficulties, one of which being the necessity of
>> the representation of precision (HDOP, VDOP).
>>
>> Not to mention the difficulty of coming up with an agreed way of
>> representing one single geographical coordinate (it's not because
>> everybody talks GPS now that someone will not talk Baidou tomorrow,
>> as an example).  If I want to locate all the IP sensors of water
>> level measurements where I live I am not able to use the GPS
>> coordinates, I must use coordinates using the Lambert projection
>> (just another example).
>>
>> Yes, I am told conversion tools exist (e.g. same GNSS chipset
>> outputs both GPS and Galileo data, using an internal conversion).
>> But then the question is whether we need conversion tools or
>> resolution tools (protocols).
>>
>> Alex
>>
>>> 3. which resolution mechanism can be used at IP locator (or
>>> edges) if packets would have to transit non IP islands e.g.
>>> Geo-locator (name) to Geo-Physical coord.
>>>
>>> 4. what is the rate and size of the records populating the
>>> resolution database
>>>
>>> 5. at which level of stack this information has to be inserted
>>> such that intermediate nodes can successfully reach the
>>> destination as expected by the source.
>>>
>>> Best regards,
>>>
>>> Georgios
>>>
>>> *From:*Papadimitriou, Dimitri (Dimitri)
>>> [mailto:dimitri.papadimitriou@alcatel-lucent.com] *Sent:*
>>> zaterdag 14 december 2013 23:56 *To:* Karagiannis, G. (EWI)
>>> *Subject:* RE: the uncrisp problem
>>>
>>> Hello,
>>>
>>> Reading all the discussions, I wonder why there is no item
>>> discussing the following points:
>>>
>>> At the network wide level
>>>
>>> - Geo-locators (naming the geographic area) vs Geo-physical
>>> coordinates (the actual coordinates of that area)
>>>
>>> Have the same relationship as
>>>
>>> - IP network locators vs none (known as of today)
>>>
>>> Note however at the local level there is distinction between IP
>>> address (logical) and e.g. MAC address (physical)
>>>
>>> Thus there is first a question 1. what a geographic area
>>> represents because several IP locators can give access to it.
>>>
>>> Then the base problem stems as follows
>>>
>>> 2. which resolution mechanism at the source node e.g.
>>> Geo-locator (name)/ Geo-Physical coord.(addr.) to IP locator
>>>
>>> 3. which resolution mechanism at IP locator (or edges) if
>>> packets would have to transit non IP islands e.g. Geo-locator
>>> (name) to Geo-Physical coord.
>>>
>>> 4. what is the rate and size of the records populating the
>>> resolution database
>>>
>>> 5. at which level of stack this information has to be inserted
>>> such that intermediate nodes can successfully reach the
>>> destination as expected by the source.
>>>
>>> Thanks,
>>>
>>> -dimitri.
>>>
>>>
>>>
>>> _______________________________________________ its mailing list
>>> its@ietf.org https://www.ietf.org/mailman/listinfo/its
>>>
>>
>>
>> _______________________________________________ its mailing list
>> its@ietf.org https://www.ietf.org/mailman/listinfo/its
>> _______________________________________________ its mailing list
>> its@ietf.org https://www.ietf.org/mailman/listinfo/its
>
>
>



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Subject: Re: [geonet/its] challenges proposed by Dimitri
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Let me try to understand this.

What is a locator?  Could it be 'latitude'?  Or could it be an IP address?

(because in LISP/FI terminology this term is used in the dichotomy 
address/locator of an IP address: it could itself be both).

Alex

Le 09/01/2014 11:29, karagian@cs.utwente.nl a écrit :
> Hi Dimitri,
>
> Thanks, so you mean that among others we should focus on:
>
> How could a locator could be mapped to a geographic area, and vice
> versa, when a m:n relationship exists between locators and geographic
> areas? The m:n relationship exists when a locator can provide access
> to m geographic areas and on the other hand a given geographic area
> could provide access to n locators.
>
> Best regards, Georgios
>
>
>> -----Original Message----- From: Papadimitriou, Dimitri (Dimitri)
>> [mailto:dimitri.papadimitriou@alcatel- lucent.com] Sent: donderdag
>> 9 januari 2014 11:12 To: Karagiannis, G. (EWI) Subject: RE:
>> [geonet/its] challenges proposed by Dimitri
>>
>> Hello,
>>
>> Well the question doesn't stem from the representation itself (they
>> exist and IETF is not the place to standardize them --at best
>> detail their succintness vs. precision knowing that our recording
>> format might be constraining) but more importantly from the
>> relationship (and implication) to associated locators.
>>
>> In the general case we would have to deal with a m:n relationship
>> (n locators can provide access to a given geographic area and on
>> the other hand a given locator could provide access to m geographic
>> areas).
>>
>> Thanks, -dimitri.
>>
>>> -----Original Message----- From: karagian@cs.utwente.nl
>>> [mailto:karagian@cs.utwente.nl] Sent: Thursday, January 09, 2014
>>> 10:12 To: creed@opengeospatial.org Cc: its@ietf.org;
>>> alexandru.petrescu@gmail.com; Papadimitriou, Dimitri (Dimitri);
>>> farinacci@gmail.com Subject: RE: [geonet/its] challenges proposed
>>> by Dimitri
>>>
>>> Hi Carl,
>>>
>>> Thanks, Is it then possible to describe this issue in such a way
>>> that we can include it as a challenge/work item in the charter
>>> and/or in the problem statement draft? Please take into account
>>> the comments of Dino!
>>>
>>> Best regards, Georgios
>>>
>>>
>>>> -----Original Message----- From: Carl Reed
>>>> [mailto:creed@opengeospatial.org] Sent: woensdag 8 januari 2014
>>>> 17:23 To: Alexandru Petrescu; Karagiannis, G. (EWI);
>>> dimitri.papadimitriou@alcatel-
>>>> lucent.com Cc: its@ietf.org Subject: Re: [geonet/its]
>>>> challenges proposed by Dimitri
>>>>
>>>> Alex -
>>>>
>>>> A very common practice in the land management community is to
>>>> create a unique parcel identifier based on the coordinates of
>>>> the centroid of the parcel. The approach generates a single PIN
>>>> based on lat/long, which in
>>> the
>>>> use case below reduces the number resolution mechanisms.
>>>>
>>>> http://www.hendersoncountync.org/ca/howpins.html
>>>>
>>>> Shows an example. They use state-plane but a similar approach
>>>> could be used for lat/long coordinates.
>>>>
>>>> And you also raise the question of coordinate reference
>>>> systems (CRS)
>>> and
>>>> the requirements perhaps to transform between CRS (also known
>>>> as re- projection). Regardless of the approach this group
>>>> decides to follow, at
>>> a
>>>> minimum the documentation needs to be very clear on the CRS of
>>>> the coordinate(s) being used. Simply stating lat/long is
>>>> unclear and can
>>> actually
>>>> result in significant absolute location errors depending on
>>>> the geoid
>>> used for
>>>> a given lat/long pair. The existing location object (LO)
>>>> definition used
>>> in PIDF
>>>> and a number of other RFCs very clearly states the relevant
>>>> EPSG code
>>> for
>>>> the CRS being used. The approach for specifying a CRS is
>>>> defined by ISO
>>> and
>>>> the OGC in a variety of documents.
>>>>
>>>> The above may seem a trivial point, but ambiguity in the
>>>> specification
>>> of the
>>>> CRS for a coordinate set can lead to a number of issues in
>>>> terms of visualization, analysis, fusion, analytics and so
>>>> forth.
>>>>
>>>> Cheers
>>>>
>>>> Carl
>>>>
>>>>
>>>> -----Original Message----- From: Alexandru Petrescu Sent:
>>>> Wednesday, January 08, 2014 4:33 AM To: karagian@cs.utwente.nl
>>>> ; dimitri.papadimitriou@alcatel-lucent.com Cc: its@ietf.org
>>>> Subject: Re: [geonet/its] challenges proposed by Dimitri
>>>>
>>>> Hi Georgios,
>>>>
>>>> You are asking for feedback.
>>>>
>>>> I have some thoughts on this.  Far from me any intention to
>>>> complexify things.
>>>>
>>>> I will be happy to read others' remarks.
>>>>
>>>> Le 06/01/2014 11:21, karagian@cs.utwente.nl a écrit :
>>>>> Hi Dimitri,
>>>>>
>>>>> Thank you very much!
>>>>>
>>>>> The questions that you have listed below are very useful and
>>>>> therefore I am forwarding your email to the its list!
>>>>>
>>>>> Actually, I agree with the challenges that you described and
>>>>> I will try to integrate them in what we have up to now:
>>>>>
>>>>> 1. How can a geographic area be "represented", since several
>>>>> IP locators can give access to it.
>>>>
>>>> An area could be represented by the coordinates of some of the
>>>> points on
>>> its
>>>> perimeter, or other description of point coordinates and shape
>>> identifier.  A
>>>> volume description would have more possibilities.  One should
>>>> also
>>> consider
>>>> maybe the projection alternatives.
>>>>
>>>>> 2. which resolution mechanism can be used at the source node
>>>>> e.g. Geo-locator (name)/ Geo-Physical coord.(addr.) to IP
>>>>> locator
>>>>
>>>> Yes, resolution mechanism may be needed.
>>>>
>>>> But, we currently know two kinds of resolution: - IP address
>>>> <-> MAC address (ND) - IP address <-> name (DNS)
>>>>
>>>> With geonet we'd talk new identifiers like geographical
>>>> coordinates. If
>>> we
>>>> talked only one such coordinate (say 'latitude'), then we'd
>>>> need 3 new resolution mechanisms: - IP address <-> latitude
>>>> (protocol IPL) - MAC address <-> latitude (protocol MACL) -
>>>> name <-> latitude (protocol NL).
>>>>
>>>> Maybe the latitude is not sufficient, so we'd need longitude
>>>> and
>>> altitude as
>>>> well.  This would give a total of 9 new resolution protocols.
>>>>
>>>> On another hand, one may think of combining the lat/long/alt
>>>> into a
>>> single
>>>> identifier.  That may appear simple at first sight, but may
>>>> have its own difficulties, one of which being the necessity of
>>>> the representation of precision (HDOP, VDOP).
>>>>
>>>> Not to mention the difficulty of coming up with an agreed way
>>>> of representing one single geographical coordinate (it's not
>>>> because
>>> everybody
>>>> talks GPS now that someone will not talk Baidou tomorrow, as
>>>> an
>>> example).
>>>> If I want to locate all the IP sensors of water level
>>>> measurements where
>>> I live
>>>> I am not able to use the GPS coordinates, I must use
>>>> coordinates using
>>> the
>>>> Lambert projection (just another example).
>>>>
>>>> Yes, I am told conversion tools exist (e.g. same GNSS chipset
>>>> outputs
>>> both
>>>> GPS and Galileo data, using an internal conversion).  But then
>>>> the
>>> question is
>>>> whether we need conversion tools or resolution tools
>>>> (protocols).
>>>>
>>>> Alex
>>>>
>>>>> 3. which resolution mechanism can be used at IP locator (or
>>>>> edges) if packets would have to transit non IP islands e.g.
>>>>> Geo-locator (name) to Geo-Physical coord.
>>>>>
>>>>> 4. what is the rate and size of the records populating the
>>>>> resolution database
>>>>>
>>>>> 5. at which level of "stack" this information has to be
>>>>> inserted such that intermediate nodes can successfully reach
>>>>> the destination as expected by the source.
>>>>>
>>>>> Best regards,
>>>>>
>>>>> Georgios
>>>>>
>>>>> *From:*Papadimitriou, Dimitri (Dimitri)
>>>>> [mailto:dimitri.papadimitriou@alcatel-lucent.com] *Sent:*
>>>>> zaterdag 14 december 2013 23:56 *To:* Karagiannis, G. (EWI)
>>>>> *Subject:* RE: the uncrisp problem
>>>>>
>>>>> Hello,
>>>>>
>>>>> Reading all the discussions, I wonder why there is no item
>>>>> discussing the following points:
>>>>>
>>>>> At the network wide level
>>>>>
>>>>> - Geo-locators (naming the geographic area) vs Geo-physical
>>>>> coordinates (the actual coordinates of that area)
>>>>>
>>>>> Have the same relationship as
>>>>>
>>>>> - IP network locators vs none (known as of today)
>>>>>
>>>>> Note however at the local level there is distinction between
>>>>> IP address (logical) and e.g. MAC address (physical)
>>>>>
>>>>> Thus there is first a question 1. what a geographic area
>>>>> "represents" because several IP locators can give access to
>>>>> it.
>>>>>
>>>>> Then the "base" problem stems as follows
>>>>>
>>>>> 2. which resolution mechanism at the source node e.g.
>>>>> Geo-locator (name)/ Geo-Physical coord.(addr.) to IP locator
>>>>>
>>>>> 3. which resolution mechanism at IP locator (or edges) if
>>>>> packets would have to transit non IP islands e.g. Geo-locator
>>>>> (name) to Geo-Physical coord.
>>>>>
>>>>> 4. what is the rate and size of the records populating the
>>>>> resolution database
>>>>>
>>>>> 5. at which level of "stack" this information has to be
>>>>> inserted such that intermediate nodes can successfully reach
>>>>> the destination as expected by the source.
>>>>>
>>>>> Thanks,
>>>>>
>>>>> -dimitri.
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________ its
>> mailing list
>>>>> its@ietf.org https://www.ietf.org/mailman/listinfo/its
>>>>>
>>>>
>>>>
>>>> _______________________________________________ its mailing
>>>> list its@ietf.org https://www.ietf.org/mailman/listinfo/its
>
> _______________________________________________ its mailing list
> its@ietf.org https://www.ietf.org/mailman/listinfo/its
>
>



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Date: Thu, 9 Jan 2014 19:07:48 -0500 (EST)
From: Carl Reed <creed@opengeospatial.org>
To: Alexandru Petrescu <alexandru.petrescu@gmail.com>
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Cc: Georgios Karagiannis <karagian@cs.utwente.nl>, its@ietf.org, Dino Farinacci <farinacci@gmail.com>, dimitri papadimitriou <dimitri.papadimitriou@alcatel-lucent.com>
Subject: Re: [geonet/its] challenges proposed by Dimitri
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Alex -

Depends on your requirements - such as types of geometry required (such as =
point, linestring, polygon, circle, etc), requirement for "compactness", an=
d so forth. Also, does the encoding need to be binary or is XML or JSON OK.=
=20

The best way to start is to define a content model that is encoding agnosti=
c and then provide encodings. Check out georss.org for an example. There is=
 also the GeoPriv geodetic encoding (Location Object): portal.opengeospatia=
l.org/files/?artifact_id=3D21630=E2=80=8E . This is an XML encoding based o=
n GML.

I am out of the office for a couple of days. More later.

Cheers

Carl


----- Original Message -----
From: "Alexandru Petrescu" <alexandru.petrescu@gmail.com>
To: "Carl Reed" <creed@opengeospatial.org>, "Dino Farinacci" <farinacci@gma=
il.com>
Cc: "Georgios Karagiannis" <karagian@cs.utwente.nl>, "dimitri papadimitriou=
" <dimitri.papadimitriou@alcatel-lucent.com>, its@ietf.org
Sent: Thursday, January 9, 2014 9:31:46 AM
Subject: Re: [geonet/its] challenges proposed by Dimitri

Le 09/01/2014 00:44, Carl Reed a =C3=A9crit :
> Dino -
>
> Thanks.
>
> I was suggesting an approach to uniquely identify a location without
>  having to use lat-long coordinates. The issue of a "boundary" is
> different. FYI, a boundary of three of more non-intersecting
> sides/edges (in GIS) is a polygon. All treated the same. ISO
> 19107:Spatial Schema provides a set of mathematical definitions for
> various types of 2d and 3d geometry. We use these definitions in the
> OGC - as does OASIS, NENA, and a number of other standards
> organizations that work with geometry and location.

Carl - that sounds interesting.

I wonder whether there exist some RFC or draft that tells how to encode
or transmit geographical coordinates?  We could look at the proposed
way, and try to understand it?

Alex

>
> Cheers
>
> Carl
>
>
> -----Original Message----- From: Dino Farinacci Sent: Wednesday,
> January 08, 2014 11:33 AM To: Carl Reed Cc: Alexandru Petrescu ;
> Georgios Karagiannis ; dimitri.papadimitriou@alcatel-lucent.com ;
> <its@ietf.org> Subject: Re: [geonet/its] challenges proposed by
> Dimitri
>
> Yes, but in this case, you need some other value to determine
> boundary. Because the center of your property can include me your
> neighbor if you don't have that other boundary. So radius,
> triangulation, or four sets of geo-coordinates are necessary.
>
> And I would argue some properties are not just hexagons, but octigons
> or nonagons as well. Depends on the granularity you want or need.
>
> Dino
>
> On Jan 8, 2014, at 8:23 AM, Carl Reed <creed@opengeospatial.org>
> wrote:
>
>> Alex -
>>
>> A very common practice in the land management community is to
>> create a unique parcel identifier based on the coordinates of the
>> centroid of the parcel. The approach generates a single PIN based
>> on lat/long, which in the use case below reduces the number
>> resolution mechanisms.
>>
>> http://www.hendersoncountync.org/ca/howpins.html
>>
>> Shows an example. They use state-plane but a similar approach could
>> be used for lat/long coordinates.
>>
>> And you also raise the question of coordinate reference systems
>> (CRS) and the requirements perhaps to transform between CRS (also
>> known as re-projection). Regardless of the approach this group
>> decides to follow, at a minimum the documentation needs to be very
>> clear on the CRS of the coordinate(s) being used. Simply stating
>> lat/long is unclear and can actually result in significant absolute
>> location errors depending on the geoid used for a given lat/long
>> pair. The existing location object (LO) definition used in PIDF and
>> a number of other RFCs very clearly states the relevant EPSG code
>> for the CRS being used. The approach for specifying a CRS is
>> defined by ISO and the OGC in a variety of documents.
>>
>> The above may seem a trivial point, but ambiguity in the
>> specification of the CRS for a coordinate set can lead to a number
>> of issues in terms of visualization, analysis, fusion, analytics
>> and so forth.
>>
>> Cheers
>>
>> Carl
>>
>>
>> -----Original Message----- From: Alexandru Petrescu Sent:
>> Wednesday, January 08, 2014 4:33 AM To: karagian@cs.utwente.nl ;
>> dimitri.papadimitriou@alcatel-lucent.com Cc: its@ietf.org Subject:
>> Re: [geonet/its] challenges proposed by Dimitri
>>
>> Hi Georgios,
>>
>> You are asking for feedback.
>>
>> I have some thoughts on this.  Far from me any intention to
>> complexify things.
>>
>> I will be happy to read others' remarks.
>>
>> Le 06/01/2014 11:21, karagian@cs.utwente.nl a =C3=A9crit :
>>> Hi Dimitri,
>>>
>>> Thank you very much!
>>>
>>> The questions that you have listed below are very useful and
>>> therefore I am forwarding your email to the its list!
>>>
>>> Actually, I agree with the challenges that you described and I
>>> will try to integrate them in what we have up to now:
>>>
>>> 1. How can a geographic area be =E2=80=9Crepresented=E2=80=9D, since se=
veral IP
>>> locators can give access to it.
>>
>> An area could be represented by the coordinates of some of the
>> points on its perimeter, or other description of point coordinates
>> and shape identifier.  A volume description would have more
>> possibilities.  One should also consider maybe the projection
>> alternatives.
>>
>>> 2. which resolution mechanism can be used at the source node
>>> e.g. Geo-locator (name)/ Geo-Physical coord.(addr.) to IP
>>> locator
>>
>> Yes, resolution mechanism may be needed.
>>
>> But, we currently know two kinds of resolution: - IP address <->
>> MAC address (ND) - IP address <-> name (DNS)
>>
>> With geonet we'd talk new identifiers like geographical
>> coordinates.  If we talked only one such coordinate (say
>> 'latitude'), then we'd need 3 new resolution mechanisms: - IP
>> address <-> latitude (protocol IPL) - MAC address <-> latitude
>> (protocol MACL) - name <-> latitude (protocol NL).
>>
>> Maybe the latitude is not sufficient, so we'd need longitude and
>> altitude as well.  This would give a total of 9 new resolution
>> protocols.
>>
>> On another hand, one may think of combining the lat/long/alt into
>> a single identifier.  That may appear simple at first sight, but
>> may have its own difficulties, one of which being the necessity of
>> the representation of precision (HDOP, VDOP).
>>
>> Not to mention the difficulty of coming up with an agreed way of
>> representing one single geographical coordinate (it's not because
>> everybody talks GPS now that someone will not talk Baidou tomorrow,
>> as an example).  If I want to locate all the IP sensors of water
>> level measurements where I live I am not able to use the GPS
>> coordinates, I must use coordinates using the Lambert projection
>> (just another example).
>>
>> Yes, I am told conversion tools exist (e.g. same GNSS chipset
>> outputs both GPS and Galileo data, using an internal conversion).
>> But then the question is whether we need conversion tools or
>> resolution tools (protocols).
>>
>> Alex
>>
>>> 3. which resolution mechanism can be used at IP locator (or
>>> edges) if packets would have to transit non IP islands e.g.
>>> Geo-locator (name) to Geo-Physical coord.
>>>
>>> 4. what is the rate and size of the records populating the
>>> resolution database
>>>
>>> 5. at which level of =E2=80=9Cstack=E2=80=9D this information has to be=
 inserted
>>> such that intermediate nodes can successfully reach the
>>> destination as expected by the source.
>>>
>>> Best regards,
>>>
>>> Georgios
>>>
>>> *From:*Papadimitriou, Dimitri (Dimitri)
>>> [mailto:dimitri.papadimitriou@alcatel-lucent.com] *Sent:*
>>> zaterdag 14 december 2013 23:56 *To:* Karagiannis, G. (EWI)
>>> *Subject:* RE: the uncrisp problem
>>>
>>> Hello,
>>>
>>> Reading all the discussions, I wonder why there is no item
>>> discussing the following points:
>>>
>>> At the network wide level
>>>
>>> - Geo-locators (naming the geographic area) vs Geo-physical
>>> coordinates (the actual coordinates of that area)
>>>
>>> Have the same relationship as
>>>
>>> - IP network locators vs none (known as of today)
>>>
>>> Note however at the local level there is distinction between IP
>>> address (logical) and e.g. MAC address (physical)
>>>
>>> Thus there is first a question 1. what a geographic area
>>> =E2=80=9Crepresents=E2=80=9D because several IP locators can give acces=
s to it.
>>>
>>> Then the =E2=80=9Cbase=E2=80=9D problem stems as follows
>>>
>>> 2. which resolution mechanism at the source node e.g.
>>> Geo-locator (name)/ Geo-Physical coord.(addr.) to IP locator
>>>
>>> 3. which resolution mechanism at IP locator (or edges) if
>>> packets would have to transit non IP islands e.g. Geo-locator
>>> (name) to Geo-Physical coord.
>>>
>>> 4. what is the rate and size of the records populating the
>>> resolution database
>>>
>>> 5. at which level of =E2=80=9Cstack=E2=80=9D this information has to be=
 inserted
>>> such that intermediate nodes can successfully reach the
>>> destination as expected by the source.
>>>
>>> Thanks,
>>>
>>> -dimitri.
>>>
>>>
>>>
>>> _______________________________________________ its mailing list
>>> its@ietf.org https://www.ietf.org/mailman/listinfo/its
>>>
>>
>>
>> _______________________________________________ its mailing list
>> its@ietf.org https://www.ietf.org/mailman/listinfo/its
>> _______________________________________________ its mailing list
>> its@ietf.org https://www.ietf.org/mailman/listinfo/its
>
>
>



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Subject: Re: [geonet/its] challenges proposed by Dimitri
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I have been clarified in private that 'locator' in the below discussion
is the 'locator' as we typically use in the discussion about attachment
points.

So the statement the challenge from Georgios/Dimitri is really how could
an IP address (a 'locator') be mapped into a geographic area?

(where 'mapped' also means mapped like in relating a parameter to
another, not necessarily like maps on a 2D board).

Alex

Le 09/01/2014 17:35, Alexandru Petrescu a écrit :
> Let me try to understand this.
>
> What is a locator?  Could it be 'latitude'?  Or could it be an IP
> address?
>
> (because in LISP/FI terminology this term is used in the dichotomy
> address/locator of an IP address: it could itself be both).
>
> Alex
>
> Le 09/01/2014 11:29, karagian@cs.utwente.nl a écrit :
>> Hi Dimitri,
>>
>> Thanks, so you mean that among others we should focus on:
>>
>> How could a locator could be mapped to a geographic area, and vice
>> versa, when a m:n relationship exists between locators and
>> geographic areas? The m:n relationship exists when a locator can
>> provide access to m geographic areas and on the other hand a given
>> geographic area could provide access to n locators.
>>
>> Best regards, Georgios
>>
>>
>>> -----Original Message----- From: Papadimitriou, Dimitri
>>> (Dimitri) [mailto:dimitri.papadimitriou@alcatel- lucent.com]
>>> Sent: donderdag 9 januari 2014 11:12 To: Karagiannis, G. (EWI)
>>> Subject: RE: [geonet/its] challenges proposed by Dimitri
>>>
>>> Hello,
>>>
>>> Well the question doesn't stem from the representation itself
>>> (they exist and IETF is not the place to standardize them --at
>>> best detail their succintness vs. precision knowing that our
>>> recording format might be constraining) but more importantly from
>>> the relationship (and implication) to associated locators.
>>>
>>> In the general case we would have to deal with a m:n
>>> relationship (n locators can provide access to a given geographic
>>> area and on the other hand a given locator could provide access
>>> to m geographic areas).
>>>
>>> Thanks, -dimitri.
>>>
>>>> -----Original Message----- From: karagian@cs.utwente.nl
>>>> [mailto:karagian@cs.utwente.nl] Sent: Thursday, January 09,
>>>> 2014 10:12 To: creed@opengeospatial.org Cc: its@ietf.org;
>>>> alexandru.petrescu@gmail.com; Papadimitriou, Dimitri
>>>> (Dimitri); farinacci@gmail.com Subject: RE: [geonet/its]
>>>> challenges proposed by Dimitri
>>>>
>>>> Hi Carl,
>>>>
>>>> Thanks, Is it then possible to describe this issue in such a
>>>> way that we can include it as a challenge/work item in the
>>>> charter and/or in the problem statement draft? Please take into
>>>> account the comments of Dino!
>>>>
>>>> Best regards, Georgios
>>>>
>>>>
>>>>> -----Original Message----- From: Carl Reed
>>>>> [mailto:creed@opengeospatial.org] Sent: woensdag 8 januari
>>>>> 2014 17:23 To: Alexandru Petrescu; Karagiannis, G. (EWI);
>>>> dimitri.papadimitriou@alcatel-
>>>>> lucent.com Cc: its@ietf.org Subject: Re: [geonet/its]
>>>>> challenges proposed by Dimitri
>>>>>
>>>>> Alex -
>>>>>
>>>>> A very common practice in the land management community is
>>>>> to create a unique parcel identifier based on the coordinates
>>>>> of the centroid of the parcel. The approach generates a
>>>>> single PIN based on lat/long, which in
>>>> the
>>>>> use case below reduces the number resolution mechanisms.
>>>>>
>>>>> http://www.hendersoncountync.org/ca/howpins.html
>>>>>
>>>>> Shows an example. They use state-plane but a similar
>>>>> approach could be used for lat/long coordinates.
>>>>>
>>>>> And you also raise the question of coordinate reference
>>>>> systems (CRS)
>>>> and
>>>>> the requirements perhaps to transform between CRS (also
>>>>> known as re- projection). Regardless of the approach this
>>>>> group decides to follow, at
>>>> a
>>>>> minimum the documentation needs to be very clear on the CRS
>>>>> of the coordinate(s) being used. Simply stating lat/long is
>>>>> unclear and can
>>>> actually
>>>>> result in significant absolute location errors depending on
>>>>> the geoid
>>>> used for
>>>>> a given lat/long pair. The existing location object (LO)
>>>>> definition used
>>>> in PIDF
>>>>> and a number of other RFCs very clearly states the relevant
>>>>> EPSG code
>>>> for
>>>>> the CRS being used. The approach for specifying a CRS is
>>>>> defined by ISO
>>>> and
>>>>> the OGC in a variety of documents.
>>>>>
>>>>> The above may seem a trivial point, but ambiguity in the
>>>>> specification
>>>> of the
>>>>> CRS for a coordinate set can lead to a number of issues in
>>>>> terms of visualization, analysis, fusion, analytics and so
>>>>> forth.
>>>>>
>>>>> Cheers
>>>>>
>>>>> Carl
>>>>>
>>>>>
>>>>> -----Original Message----- From: Alexandru Petrescu Sent:
>>>>> Wednesday, January 08, 2014 4:33 AM To:
>>>>> karagian@cs.utwente.nl ;
>>>>> dimitri.papadimitriou@alcatel-lucent.com Cc: its@ietf.org
>>>>> Subject: Re: [geonet/its] challenges proposed by Dimitri
>>>>>
>>>>> Hi Georgios,
>>>>>
>>>>> You are asking for feedback.
>>>>>
>>>>> I have some thoughts on this.  Far from me any intention to
>>>>> complexify things.
>>>>>
>>>>> I will be happy to read others' remarks.
>>>>>
>>>>> Le 06/01/2014 11:21, karagian@cs.utwente.nl a écrit :
>>>>>> Hi Dimitri,
>>>>>>
>>>>>> Thank you very much!
>>>>>>
>>>>>> The questions that you have listed below are very useful
>>>>>> and therefore I am forwarding your email to the its list!
>>>>>>
>>>>>> Actually, I agree with the challenges that you described
>>>>>> and I will try to integrate them in what we have up to
>>>>>> now:
>>>>>>
>>>>>> 1. How can a geographic area be "represented", since
>>>>>> several IP locators can give access to it.
>>>>>
>>>>> An area could be represented by the coordinates of some of
>>>>> the points on
>>>> its
>>>>> perimeter, or other description of point coordinates and
>>>>> shape
>>>> identifier.  A
>>>>> volume description would have more possibilities.  One
>>>>> should also
>>>> consider
>>>>> maybe the projection alternatives.
>>>>>
>>>>>> 2. which resolution mechanism can be used at the source
>>>>>> node e.g. Geo-locator (name)/ Geo-Physical coord.(addr.) to
>>>>>> IP locator
>>>>>
>>>>> Yes, resolution mechanism may be needed.
>>>>>
>>>>> But, we currently know two kinds of resolution: - IP address
>>>>> <-> MAC address (ND) - IP address <-> name (DNS)
>>>>>
>>>>> With geonet we'd talk new identifiers like geographical
>>>>> coordinates. If
>>>> we
>>>>> talked only one such coordinate (say 'latitude'), then we'd
>>>>> need 3 new resolution mechanisms: - IP address <-> latitude
>>>>> (protocol IPL) - MAC address <-> latitude (protocol MACL) -
>>>>> name <-> latitude (protocol NL).
>>>>>
>>>>> Maybe the latitude is not sufficient, so we'd need longitude
>>>>> and
>>>> altitude as
>>>>> well.  This would give a total of 9 new resolution
>>>>> protocols.
>>>>>
>>>>> On another hand, one may think of combining the lat/long/alt
>>>>> into a
>>>> single
>>>>> identifier.  That may appear simple at first sight, but may
>>>>> have its own difficulties, one of which being the necessity
>>>>> of the representation of precision (HDOP, VDOP).
>>>>>
>>>>> Not to mention the difficulty of coming up with an agreed
>>>>> way of representing one single geographical coordinate (it's
>>>>> not because
>>>> everybody
>>>>> talks GPS now that someone will not talk Baidou tomorrow, as
>>>>> an
>>>> example).
>>>>> If I want to locate all the IP sensors of water level
>>>>> measurements where
>>>> I live
>>>>> I am not able to use the GPS coordinates, I must use
>>>>> coordinates using
>>>> the
>>>>> Lambert projection (just another example).
>>>>>
>>>>> Yes, I am told conversion tools exist (e.g. same GNSS
>>>>> chipset outputs
>>>> both
>>>>> GPS and Galileo data, using an internal conversion).  But
>>>>> then the
>>>> question is
>>>>> whether we need conversion tools or resolution tools
>>>>> (protocols).
>>>>>
>>>>> Alex
>>>>>
>>>>>> 3. which resolution mechanism can be used at IP locator
>>>>>> (or edges) if packets would have to transit non IP islands
>>>>>> e.g. Geo-locator (name) to Geo-Physical coord.
>>>>>>
>>>>>> 4. what is the rate and size of the records populating the
>>>>>> resolution database
>>>>>>
>>>>>> 5. at which level of "stack" this information has to be
>>>>>> inserted such that intermediate nodes can successfully
>>>>>> reach the destination as expected by the source.
>>>>>>
>>>>>> Best regards,
>>>>>>
>>>>>> Georgios
>>>>>>
>>>>>> *From:*Papadimitriou, Dimitri (Dimitri)
>>>>>> [mailto:dimitri.papadimitriou@alcatel-lucent.com] *Sent:*
>>>>>> zaterdag 14 december 2013 23:56 *To:* Karagiannis, G.
>>>>>> (EWI) *Subject:* RE: the uncrisp problem
>>>>>>
>>>>>> Hello,
>>>>>>
>>>>>> Reading all the discussions, I wonder why there is no item
>>>>>> discussing the following points:
>>>>>>
>>>>>> At the network wide level
>>>>>>
>>>>>> - Geo-locators (naming the geographic area) vs
>>>>>> Geo-physical coordinates (the actual coordinates of that
>>>>>> area)
>>>>>>
>>>>>> Have the same relationship as
>>>>>>
>>>>>> - IP network locators vs none (known as of today)
>>>>>>
>>>>>> Note however at the local level there is distinction
>>>>>> between IP address (logical) and e.g. MAC address
>>>>>> (physical)
>>>>>>
>>>>>> Thus there is first a question 1. what a geographic area
>>>>>> "represents" because several IP locators can give access
>>>>>> to it.
>>>>>>
>>>>>> Then the "base" problem stems as follows
>>>>>>
>>>>>> 2. which resolution mechanism at the source node e.g.
>>>>>> Geo-locator (name)/ Geo-Physical coord.(addr.) to IP
>>>>>> locator
>>>>>>
>>>>>> 3. which resolution mechanism at IP locator (or edges) if
>>>>>> packets would have to transit non IP islands e.g.
>>>>>> Geo-locator (name) to Geo-Physical coord.
>>>>>>
>>>>>> 4. what is the rate and size of the records populating the
>>>>>> resolution database
>>>>>>
>>>>>> 5. at which level of "stack" this information has to be
>>>>>> inserted such that intermediate nodes can successfully
>>>>>> reach the destination as expected by the source.
>>>>>>
>>>>>> Thanks,
>>>>>>
>>>>>> -dimitri.
>>>>>>
>>>>>>
>>>>>>
>>>>>> _______________________________________________ its
>>> mailing list
>>>>>> its@ietf.org https://www.ietf.org/mailman/listinfo/its
>>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________ its mailing
>>>>> list its@ietf.org https://www.ietf.org/mailman/listinfo/its
>>
>> _______________________________________________ its mailing list
>> its@ietf.org https://www.ietf.org/mailman/listinfo/its
>>
>>
>
>
> _______________________________________________ its mailing list
> its@ietf.org https://www.ietf.org/mailman/listinfo/its
>
>



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Subject: Re: [geonet/its] challenges proposed by Dimitri
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Le 10/01/2014 01:07, Carl Reed a İcrit :
> Alex -
>
> Depends on your requirements - such as types of geometry required
> (such as point, linestring, polygon, circle, etc), requirement for
> "compactness", and so forth.

Makes sense.  Also I think we'd need to decide that these are
three-dimensional volumes from the start, not just 2D.  For example when
many highways branches pass one under another, their RSUs would be
visible from up above of the other way.

> Also, does the encoding need to be binary or is XML or JSON OK.

Right, I wonder whether any draft or RFC offers XML or JSON
representations of geography concepts at IETF.

> The best way to start is to define a content model that is encoding
> agnostic and then provide encodings.

I agree, it's a good distinction.  The content model could be something
like "GPS coordinates with WGS-84", and the encoding could be "XML".

> Check out georss.org for an example. There is also the GeoPriv
> geodetic encoding (Location Object):
> portal.opengeospatial.org/files/?artifact_id=21630â . This is an XML
> encoding based on GML.

Thanks.

Is this an IETF document?  (I did click on it, but I can't understand).

> I am out of the office for a couple of days. More later.

Thanks,

Alex

>
> Cheers
>
> Carl
>
>
> ----- Original Message ----- From: "Alexandru Petrescu"
> <alexandru.petrescu@gmail.com> To: "Carl Reed"
> <creed@opengeospatial.org>, "Dino Farinacci" <farinacci@gmail.com>
> Cc: "Georgios Karagiannis" <karagian@cs.utwente.nl>, "dimitri
> papadimitriou" <dimitri.papadimitriou@alcatel-lucent.com>,
> its@ietf.org Sent: Thursday, January 9, 2014 9:31:46 AM Subject: Re:
> [geonet/its] challenges proposed by Dimitri
>
> Le 09/01/2014 00:44, Carl Reed a İcrit :
>> Dino -
>>
>> Thanks.
>>
>> I was suggesting an approach to uniquely identify a location
>> without having to use lat-long coordinates. The issue of a
>> "boundary" is different. FYI, a boundary of three of more
>> non-intersecting sides/edges (in GIS) is a polygon. All treated
>> the same. ISO 19107:Spatial Schema provides a set of mathematical
>> definitions for various types of 2d and 3d geometry. We use these
>> definitions in the OGC - as does OASIS, NENA, and a number of
>> other standards organizations that work with geometry and
>> location.
>
> Carl - that sounds interesting.
>
> I wonder whether there exist some RFC or draft that tells how to
> encode or transmit geographical coordinates?  We could look at the
> proposed way, and try to understand it?
>
> Alex
>
>>
>> Cheers
>>
>> Carl
>>
>>
>> -----Original Message----- From: Dino Farinacci Sent: Wednesday,
>> January 08, 2014 11:33 AM To: Carl Reed Cc: Alexandru Petrescu ;
>> Georgios Karagiannis ; dimitri.papadimitriou@alcatel-lucent.com ;
>> <its@ietf.org> Subject: Re: [geonet/its] challenges proposed by
>> Dimitri
>>
>> Yes, but in this case, you need some other value to determine
>> boundary. Because the center of your property can include me your
>> neighbor if you don't have that other boundary. So radius,
>> triangulation, or four sets of geo-coordinates are necessary.
>>
>> And I would argue some properties are not just hexagons, but
>> octigons or nonagons as well. Depends on the granularity you want
>> or need.
>>
>> Dino
>>
>> On Jan 8, 2014, at 8:23 AM, Carl Reed <creed@opengeospatial.org>
>> wrote:
>>
>>> Alex -
>>>
>>> A very common practice in the land management community is to
>>> create a unique parcel identifier based on the coordinates of the
>>> centroid of the parcel. The approach generates a single PIN based
>>> on lat/long, which in the use case below reduces the number
>>> resolution mechanisms.
>>>
>>> http://www.hendersoncountync.org/ca/howpins.html
>>>
>>> Shows an example. They use state-plane but a similar approach
>>> could be used for lat/long coordinates.
>>>
>>> And you also raise the question of coordinate reference systems
>>> (CRS) and the requirements perhaps to transform between CRS (also
>>> known as re-projection). Regardless of the approach this group
>>> decides to follow, at a minimum the documentation needs to be
>>> very clear on the CRS of the coordinate(s) being used. Simply
>>> stating lat/long is unclear and can actually result in
>>> significant absolute location errors depending on the geoid used
>>> for a given lat/long pair. The existing location object (LO)
>>> definition used in PIDF and a number of other RFCs very clearly
>>> states the relevant EPSG code for the CRS being used. The
>>> approach for specifying a CRS is defined by ISO and the OGC in a
>>> variety of documents.
>>>
>>> The above may seem a trivial point, but ambiguity in the
>>> specification of the CRS for a coordinate set can lead to a
>>> number of issues in terms of visualization, analysis, fusion,
>>> analytics and so forth.
>>>
>>> Cheers
>>>
>>> Carl
>>>
>>>
>>> -----Original Message----- From: Alexandru Petrescu Sent:
>>> Wednesday, January 08, 2014 4:33 AM To: karagian@cs.utwente.nl ;
>>>  dimitri.papadimitriou@alcatel-lucent.com Cc: its@ietf.org
>>> Subject: Re: [geonet/its] challenges proposed by Dimitri
>>>
>>> Hi Georgios,
>>>
>>> You are asking for feedback.
>>>
>>> I have some thoughts on this.  Far from me any intention to
>>> complexify things.
>>>
>>> I will be happy to read others' remarks.
>>>
>>> Le 06/01/2014 11:21, karagian@cs.utwente.nl a İcrit :
>>>> Hi Dimitri,
>>>>
>>>> Thank you very much!
>>>>
>>>> The questions that you have listed below are very useful and
>>>> therefore I am forwarding your email to the its list!
>>>>
>>>> Actually, I agree with the challenges that you described and I
>>>>  will try to integrate them in what we have up to now:
>>>>
>>>> 1. How can a geographic area be ârepresentedâ, since several IP
>>>> locators can give access to it.
>>>
>>> An area could be represented by the coordinates of some of the
>>> points on its perimeter, or other description of point
>>> coordinates and shape identifier.  A volume description would
>>> have more possibilities.  One should also consider maybe the
>>> projection alternatives.
>>>
>>>> 2. which resolution mechanism can be used at the source node
>>>> e.g. Geo-locator (name)/ Geo-Physical coord.(addr.) to IP
>>>> locator
>>>
>>> Yes, resolution mechanism may be needed.
>>>
>>> But, we currently know two kinds of resolution: - IP address <->
>>>  MAC address (ND) - IP address <-> name (DNS)
>>>
>>> With geonet we'd talk new identifiers like geographical
>>> coordinates.  If we talked only one such coordinate (say
>>> 'latitude'), then we'd need 3 new resolution mechanisms: - IP
>>> address <-> latitude (protocol IPL) - MAC address <-> latitude
>>> (protocol MACL) - name <-> latitude (protocol NL).
>>>
>>> Maybe the latitude is not sufficient, so we'd need longitude and
>>>  altitude as well.  This would give a total of 9 new resolution
>>> protocols.
>>>
>>> On another hand, one may think of combining the lat/long/alt into
>>> a single identifier.  That may appear simple at first sight, but
>>> may have its own difficulties, one of which being the necessity
>>> of the representation of precision (HDOP, VDOP).
>>>
>>> Not to mention the difficulty of coming up with an agreed way of
>>>  representing one single geographical coordinate (it's not
>>> because everybody talks GPS now that someone will not talk
>>> Baidou tomorrow, as an example).  If I want to locate all the IP
>>> sensors of water level measurements where I live I am not able to
>>> use the GPS coordinates, I must use coordinates using the
>>> Lambert projection (just another example).
>>>
>>> Yes, I am told conversion tools exist (e.g. same GNSS chipset
>>> outputs both GPS and Galileo data, using an internal conversion).
>>> But then the question is whether we need conversion tools or
>>> resolution tools (protocols).
>>>
>>> Alex
>>>
>>>> 3. which resolution mechanism can be used at IP locator (or
>>>> edges) if packets would have to transit non IP islands e.g.
>>>> Geo-locator (name) to Geo-Physical coord.
>>>>
>>>> 4. what is the rate and size of the records populating the
>>>> resolution database
>>>>
>>>> 5. at which level of âstackâ this information has to be
>>>> inserted such that intermediate nodes can successfully reach
>>>> the destination as expected by the source.
>>>>
>>>> Best regards,
>>>>
>>>> Georgios
>>>>
>>>> *From:*Papadimitriou, Dimitri (Dimitri)
>>>> [mailto:dimitri.papadimitriou@alcatel-lucent.com] *Sent:*
>>>> zaterdag 14 december 2013 23:56 *To:* Karagiannis, G. (EWI)
>>>> *Subject:* RE: the uncrisp problem
>>>>
>>>> Hello,
>>>>
>>>> Reading all the discussions, I wonder why there is no item
>>>> discussing the following points:
>>>>
>>>> At the network wide level
>>>>
>>>> - Geo-locators (naming the geographic area) vs Geo-physical
>>>> coordinates (the actual coordinates of that area)
>>>>
>>>> Have the same relationship as
>>>>
>>>> - IP network locators vs none (known as of today)
>>>>
>>>> Note however at the local level there is distinction between IP
>>>> address (logical) and e.g. MAC address (physical)
>>>>
>>>> Thus there is first a question 1. what a geographic area
>>>> ârepresentsâ because several IP locators can give access to
>>>> it.
>>>>
>>>> Then the âbaseâ problem stems as follows
>>>>
>>>> 2. which resolution mechanism at the source node e.g.
>>>> Geo-locator (name)/ Geo-Physical coord.(addr.) to IP locator
>>>>
>>>> 3. which resolution mechanism at IP locator (or edges) if
>>>> packets would have to transit non IP islands e.g. Geo-locator
>>>> (name) to Geo-Physical coord.
>>>>
>>>> 4. what is the rate and size of the records populating the
>>>> resolution database
>>>>
>>>> 5. at which level of âstackâ this information has to be
>>>> inserted such that intermediate nodes can successfully reach
>>>> the destination as expected by the source.
>>>>
>>>> Thanks,
>>>>
>>>> -dimitri.
>>>>
>>>>
>>>>
>>>> _______________________________________________ its mailing
>>>> list its@ietf.org https://www.ietf.org/mailman/listinfo/its
>>>>
>>>
>>>
>>> _______________________________________________ its mailing list
>>>  its@ietf.org https://www.ietf.org/mailman/listinfo/its
>>> _______________________________________________ its mailing list
>>>  its@ietf.org https://www.ietf.org/mailman/listinfo/its
>>
>>
>>
>
>
>
>



From ml@sekil.fr  Fri Jan 10 09:08:47 2014
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From: Emmanuel Thierry <ml@sekil.fr>
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Subject: [geonet/its] Comments on draft-petrescu-autoconf-ra-based-routing
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Hello,

I took a look to the I.D. draft-petrescu-autoconf-ra-based-routing and i =
have some comments and questions about it. I don't know if it is the =
best place to discuss, please redirect me to the appropriate list if not =
!


1/ RA Routing limit:
My understanding of this draft is that RAs will be "forwarded" across =
multiple links. A look to section 4.3 makes me think that, since Route =
Information are stored by the intermediate node (MR2), then resent to =
the next Mobile Router (either MR1 or MR3). However i don't see any =
limit. It may be a concern if there is a undiscontinuing queue of moving =
objects. Where this broadcast is supposed to be stopped ? Shouldn't =
there exist a TTL for that ?

2/ Fixed Scene:
The concept of "Fixed Scene" is quite abstract to me, i don't understand =
what it means and how it could be interpreted in a protocol standard. At =
no moment i envision in which Fixed Scene i am supposed to be. Could you =
elaborate on that ?

3/ Preference value:
You use a preference value of 0x09, so that this route is not preferred =
among others. I think there is a typo and it should be 0x03, as stated =
in RFC 4191.

4/ Default router
Even if you set the preference value to 0x03 to lower the preference of =
the advertising router, it remains a valid router for the receiver of =
this Router Advertisement. As a consequence, if there is no other router =
available (no road infrastructure), the Mobile Router which receives =
this Router Advertisement (or a node that don't understand the newly =
introduced "M" flag) may try to use it as a default router. Moreover, if =
a roadside router chooses to use the same preference value to lower its =
preference compared to other routers (for example a roadside router =
which serves as a backup router), a Mobile Router advertising its prefix =
through Router Advertisements may be preferred among this valid backup =
router.

It is unclear in section 4.3 if by "preference" and "lifetime", you mean =
the corresponding fields in the RA itself or in the RIO. I assumed you =
meant in the RA. The RFC 4861 section 4.2 clearly states that the proper =
way to indicate that an advertising router is not likely to forward =
traffic for the default route, is to set Router Lifetime to 0. So the =
Router lifetime shouldn't be used there. A Mobile Router (or roadside =
router) that wants to advertise specific prefixes may want to advertise =
it independently of whether the node is or isn't a router. The draft =
should allow to use these fields normally, i.e. set the Router Lifetime =
to 0 and Router preference to 0x00 if you don't forward traffic for =
::/0, set the Router Lifetime and Router preference to an appropriate =
value if you forward traffic for ::/0.

In order to code lifetime, Mobile Routers should use the lifetime field =
in the RIO, and set the preference field in the RIO to an appropriate =
value, according to whether or not the node considers it is the best =
candidate for reaching the destination.

Best regards
Emmanuel Thierry


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From: Rex Buddenberg <buddenbergr@gmail.com>
To: Alexandru Petrescu <alexandru.petrescu@gmail.com>
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Cc: Georgios Karagiannis <karagian@cs.utwente.nl>, Dino Farinacci <farinacci@gmail.com>, its@ietf.org, dimitri papadimitriou <dimitri.papadimitriou@alcatel-lucent.com>
Subject: Re: [geonet/its] challenges proposed by Dimitri
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On Fri, 2014-01-10 at 17:46 +0100, Alexandru Petrescu wrote:
> 
> Right, I wonder whether any draft or RFC offers XML or JSON
> representations of geography concepts at IETF.

There's a parallel discussion in PAWS.

PASW = mechanism for white space management.  

In US, the FCC has historically cared about antenna location and height,
but for aircraft clearance reasons.  Now we're entering on a much larger
frequency reuse exercise so more sophistication regarding emitter
location is needed.  I can't recite all the discussion but there was a
fair amount going by and some of the terms look familiar.  Agree with
you're instincts -- reuse rather than reinvent.




From melinda.shore@gmail.com  Fri Jan 10 12:53:18 2014
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Subject: Re: [geonet/its] challenges proposed by Dimitri
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On 1/10/14 7:46 AM, Alexandru Petrescu wrote:
> Right, I wonder whether any draft or RFC offers XML or JSON
> representations of geography concepts at IETF.

I don't believe so, and it's also my impression that while
there are open specifications for the representation of
polygons in geospatial data it's largely the case that
representations tend to be implementation-driven.  I've
asked someone who works in remote sensing and who does a
lot of computation if she'd be willing to write something
up on what's out there.

Melinda



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Thread-Topic: [geonet/its] challenges proposed by Dimitri
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Subject: Re: [geonet/its] challenges proposed by Dimitri
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Hi Dimitri,



Yes, that is also what I had in mind about what the locator represents!



Best regards,

Georgios



________________________________
Van: Papadimitriou, Dimitri (Dimitri) [dimitri.papadimitriou@alcatel-lucent=
.com]
Verzonden: donderdag 9 januari 2014 18:20
To: Alexandru Petrescu
Cc: Karagiannis, G. (EWI)
Onderwerp: RE: [geonet/its] challenges proposed by Dimitri


The term "locator" refered in the below statement is taken out of the value=
 space associated to the "network attachment" points; this value space coul=
d be e.g. Provider Allocatable IP addresses.

The term "locator" is generic; its inception precedes by decades its partic=
ular use in the LISP context; for instance, a locator (in the "geographic d=
omain") would take its value out of e.g. geographic coordinate space.


Hope this clarifies,
-dimitri.

> -----Original Message-----
> From: its [mailto:its-bounces@ietf.org] On Behalf Of Alexandru Petrescu
> Sent: Thursday, January 09, 2014 17:35
> To: its@ietf.org
> Subject: Re: [geonet/its] challenges proposed by Dimitri
>
> Let me try to understand this.
>
> What is a locator?  Could it be 'latitude'?  Or could it be an IP address=
?
>
> (because in LISP/FI terminology this term is used in the dichotomy
> address/locator of an IP address: it could itself be both).
>
> Alex
>
> Le 09/01/2014 11:29, karagian@cs.utwente.nl a =E9crit :
> > Hi Dimitri,
> >
> > Thanks, so you mean that among others we should focus on:
> >
> > How could a locator could be mapped to a geographic area, and vice
> > versa, when a m:n relationship exists between locators and geographic
> > areas? The m:n relationship exists when a locator can provide access
> > to m geographic areas and on the other hand a given geographic area
> > could provide access to n locators.
> >
> > Best regards, Georgios
> >
> >
> >> -----Original Message----- From: Papadimitriou, Dimitri (Dimitri)
> >> [<about:blank>mailto:dimitri.papadimitriou@alcatel- lucent.com] Sent: =
donderdag
> >> 9 januari 2014 11:12 To: Karagiannis, G. (EWI) Subject: RE:
> >> [geonet/its] challenges proposed by Dimitri
> >>
> >> Hello,
> >>
> >> Well the question doesn't stem from the representation itself (they
> >> exist and IETF is not the place to standardize them --at best
> >> detail their succintness vs. precision knowing that our recording
> >> format might be constraining) but more importantly from the
> >> relationship (and implication) to associated locators.
> >>
> >> In the general case we would have to deal with a m:n relationship
> >> (n locators can provide access to a given geographic area and on
> >> the other hand a given locator could provide access to m geographic
> >> areas).
> >>
> >> Thanks, -dimitri.
> >>
> >>> -----Original Message----- From: karagian@cs.utwente.nl
> >>> [mailto:karagian@cs.utwente.nl] Sent: Thursday, January 09, 2014
> >>> 10:12 To: creed@opengeospatial.org Cc: its@ietf.org;
> >>> alexandru.petrescu@gmail.com; Papadimitriou, Dimitri (Dimitri);
> >>> farinacci@gmail.com Subject: RE: [geonet/its] challenges proposed
> >>> by Dimitri
> >>>
> >>> Hi Carl,
> >>>
> >>> Thanks, Is it then possible to describe this issue in such a way
> >>> that we can include it as a challenge/work item in the charter
> >>> and/or in the problem statement draft? Please take into account
> >>> the comments of Dino!
> >>>
> >>> Best regards, Georgios
> >>>
> >>>
> >>>> -----Original Message----- From: Carl Reed
> >>>> [mailto:creed@opengeospatial.org] Sent: woensdag 8 januari 2014
> >>>> 17:23 To: Alexandru Petrescu; Karagiannis, G. (EWI);
> >>> dimitri.papadimitriou@alcatel-
> >>>> lucent.com Cc: its@ietf.org Subject: Re: [geonet/its]
> >>>> challenges proposed by Dimitri
> >>>>
> >>>> Alex -
> >>>>
> >>>> A very common practice in the land management community is to
> >>>> create a unique parcel identifier based on the coordinates of
> >>>> the centroid of the parcel. The approach generates a single PIN
> >>>> based on lat/long, which in
> >>> the
> >>>> use case below reduces the number resolution mechanisms.
> >>>>
> >>>> http://www.hendersoncountync.org/ca/howpins.html
> >>>>
> >>>> Shows an example. They use state-plane but a similar approach
> >>>> could be used for lat/long coordinates.
> >>>>
> >>>> And you also raise the question of coordinate reference
> >>>> systems (CRS)
> >>> and
> >>>> the requirements perhaps to transform between CRS (also known
> >>>> as re- projection). Regardless of the approach this group
> >>>> decides to follow, at
> >>> a
> >>>> minimum the documentation needs to be very clear on the CRS of
> >>>> the coordinate(s) being used. Simply stating lat/long is
> >>>> unclear and can
> >>> actually
> >>>> result in significant absolute location errors depending on
> >>>> the geoid
> >>> used for
> >>>> a given lat/long pair. The existing location object (LO)
> >>>> definition used
> >>> in PIDF
> >>>> and a number of other RFCs very clearly states the relevant
> >>>> EPSG code
> >>> for
> >>>> the CRS being used. The approach for specifying a CRS is
> >>>> defined by ISO
> >>> and
> >>>> the OGC in a variety of documents.
> >>>>
> >>>> The above may seem a trivial point, but ambiguity in the
> >>>> specification
> >>> of the
> >>>> CRS for a coordinate set can lead to a number of issues in
> >>>> terms of visualization, analysis, fusion, analytics and so
> >>>> forth.
> >>>>
> >>>> Cheers
> >>>>
> >>>> Carl
> >>>>
> >>>>
> >>>> -----Original Message----- From: Alexandru Petrescu Sent:
> >>>> Wednesday, January 08, 2014 4:33 AM To: karagian@cs.utwente.nl
> >>>> ; dimitri.papadimitriou@alcatel-lucent.com Cc: its@ietf.org
> >>>> Subject: Re: [geonet/its] challenges proposed by Dimitri
> >>>>
> >>>> Hi Georgios,
> >>>>
> >>>> You are asking for feedback.
> >>>>
> >>>> I have some thoughts on this.  Far from me any intention to
> >>>> complexify things.
> >>>>
> >>>> I will be happy to read others' remarks.
> >>>>
> >>>> Le 06/01/2014 11:21, karagian@cs.utwente.nl a =E9crit :
> >>>>> Hi Dimitri,
> >>>>>
> >>>>> Thank you very much!
> >>>>>
> >>>>> The questions that you have listed below are very useful and
> >>>>> therefore I am forwarding your email to the its list!
> >>>>>
> >>>>> Actually, I agree with the challenges that you described and
> >>>>> I will try to integrate them in what we have up to now:
> >>>>>
> >>>>> 1. How can a geographic area be "represented", since several
> >>>>> IP locators can give access to it.
> >>>>
> >>>> An area could be represented by the coordinates of some of the
> >>>> points on
> >>> its
> >>>> perimeter, or other description of point coordinates and shape
> >>> identifier.  A
> >>>> volume description would have more possibilities.  One should
> >>>> also
> >>> consider
> >>>> maybe the projection alternatives.
> >>>>
> >>>>> 2. which resolution mechanism can be used at the source node
> >>>>> e.g. Geo-locator (name)/ Geo-Physical coord.(addr.) to IP
> >>>>> locator
> >>>>
> >>>> Yes, resolution mechanism may be needed.
> >>>>
> >>>> But, we currently know two kinds of resolution: - IP address
> >>>> <-> MAC address (ND) - IP address <-> name (DNS)
> >>>>
> >>>> With geonet we'd talk new identifiers like geographical
> >>>> coordinates. If
> >>> we
> >>>> talked only one such coordinate (say 'latitude'), then we'd
> >>>> need 3 new resolution mechanisms: - IP address <-> latitude
> >>>> (protocol IPL) - MAC address <-> latitude (protocol MACL) -
> >>>> name <-> latitude (protocol NL).
> >>>>
> >>>> Maybe the latitude is not sufficient, so we'd need longitude
> >>>> and
> >>> altitude as
> >>>> well.  This would give a total of 9 new resolution protocols.
> >>>>
> >>>> On another hand, one may think of combining the lat/long/alt
> >>>> into a
> >>> single
> >>>> identifier.  That may appear simple at first sight, but may
> >>>> have its own difficulties, one of which being the necessity of
> >>>> the representation of precision (HDOP, VDOP).
> >>>>
> >>>> Not to mention the difficulty of coming up with an agreed way
> >>>> of representing one single geographical coordinate (it's not
> >>>> because
> >>> everybody
> >>>> talks GPS now that someone will not talk Baidou tomorrow, as
> >>>> an
> >>> example).
> >>>> If I want to locate all the IP sensors of water level
> >>>> measurements where
> >>> I live
> >>>> I am not able to use the GPS coordinates, I must use
> >>>> coordinates using
> >>> the
> >>>> Lambert projection (just another example).
> >>>>
> >>>> Yes, I am told conversion tools exist (e.g. same GNSS chipset
> >>>> outputs
> >>> both
> >>>> GPS and Galileo data, using an internal conversion).  But then
> >>>> the
> >>> question is
> >>>> whether we need conversion tools or resolution tools
> >>>> (protocols).
> >>>>
> >>>> Alex
> >>>>
> >>>>> 3. which resolution mechanism can be used at IP locator (or
> >>>>> edges) if packets would have to transit non IP islands e.g.
> >>>>> Geo-locator (name) to Geo-Physical coord.
> >>>>>
> >>>>> 4. what is the rate and size of the records populating the
> >>>>> resolution database
> >>>>>
> >>>>> 5. at which level of "stack" this information has to be
> >>>>> inserted such that intermediate nodes can successfully reach
> >>>>> the destination as expected by the source.
> >>>>>
> >>>>> Best regards,
> >>>>>
> >>>>> Georgios
> >>>>>
> >>>>> *From:*Papadimitriou, Dimitri (Dimitri)
> >>>>> [mailto:dimitri.papadimitriou@alcatel-lucent.com] *Sent:*
> >>>>> zaterdag 14 december 2013 23:56 *To:* Karagiannis, G. (EWI)
> >>>>> *Subject:* RE: the uncrisp problem
> >>>>>
> >>>>> Hello,
> >>>>>
> >>>>> Reading all the discussions, I wonder why there is no item
> >>>>> discussing the following points:
> >>>>>
> >>>>> At the network wide level
> >>>>>
> >>>>> - Geo-locators (naming the geographic area) vs Geo-physical
> >>>>> coordinates (the actual coordinates of that area)
> >>>>>
> >>>>> Have the same relationship as
> >>>>>
> >>>>> - IP network locators vs none (known as of today)
> >>>>>
> >>>>> Note however at the local level there is distinction between
> >>>>> IP address (logical) and e.g. MAC address (physical)
> >>>>>
> >>>>> Thus there is first a question 1. what a geographic area
> >>>>> "represents" because several IP locators can give access to
> >>>>> it.
> >>>>>
> >>>>> Then the "base" problem stems as follows
> >>>>>
> >>>>> 2. which resolution mechanism at the source node e.g.
> >>>>> Geo-locator (name)/ Geo-Physical coord.(addr.) to IP locator
> >>>>>
> >>>>> 3. which resolution mechanism at IP locator (or edges) if
> >>>>> packets would have to transit non IP islands e.g. Geo-locator
> >>>>> (name) to Geo-Physical coord.
> >>>>>
> >>>>> 4. what is the rate and size of the records populating the
> >>>>> resolution database
> >>>>>
> >>>>> 5. at which level of "stack" this information has to be
> >>>>> inserted such that intermediate nodes can successfully reach
> >>>>> the destination as expected by the source.
> >>>>>
> >>>>> Thanks,
> >>>>>
> >>>>> -dimitri.
> >>>>>
> >>>>>
> >>>>>
> >>>>> _______________________________________________ its
> >> mailing list
> >>>>> its@ietf.org https://www.ietf.org/mailman/listinfo/its
> >>>>>
> >>>>
> >>>>
> >>>> _______________________________________________ its mailing
> >>>> list its@ietf.org https://www.ietf.org/mailman/listinfo/its
> >
> > _______________________________________________ its mailing list
> > its@ietf.org https://www.ietf.org/mailman/listinfo/its
> >
> >
>
>
> _______________________________________________
> its mailing list
> its@ietf.org
> https://www.ietf.org/mailman/listinfo/its

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E: 10pt">
<p>Hi Dimitri,</p>
<p>&nbsp;</p>
<p>Yes, that is also what I had in mind about what the locator represents!<=
/p>
<p>&nbsp;</p>
<p>Best regards,</p>
<p>Georgios</p>
<p>&nbsp;</p>
<div>
<hr tabindex=3D"-1">
<div id=3D"x_divRplyFwdMsg"><font color=3D"#000000" size=3D"2" face=3D"Taho=
ma"><b>Van:</b> Papadimitriou, Dimitri (Dimitri) [dimitri.papadimitriou@alc=
atel-lucent.com]<br>
<b>Verzonden:</b> donderdag 9 januari 2014 18:20<br>
<b>To:</b> Alexandru Petrescu<br>
<b>Cc:</b> Karagiannis, G. (EWI)<br>
<b>Onderwerp:</b> RE: [geonet/its] challenges proposed by Dimitri<br>
</font><br>
</div>
<div></div>
</div>
<font size=3D"2"><span style=3D"FONT-SIZE: 10pt">
<div class=3D"PlainText"><br>
The term &quot;locator&quot; refered in the below statement is taken out of=
 the value space associated to the &quot;network attachment&quot; points; t=
his value space could be e.g. Provider Allocatable IP addresses.
<br>
<br>
The term &quot;locator&quot; is generic; its inception precedes by decades =
its particular use in the LISP context; for instance, a locator (in the &qu=
ot;geographic domain&quot;) would take its value out of e.g. geographic coo=
rdinate space.<br>
<br>
<br>
Hope this clarifies,<br>
-dimitri.<br>
<br>
&gt; -----Original Message-----<br>
&gt; From: its [<a href=3D"mailto:its-bounces@ietf.org" target=3D"_blank">m=
ailto:its-bounces@ietf.org</a>] On Behalf Of Alexandru Petrescu<br>
&gt; Sent: Thursday, January 09, 2014 17:35<br>
&gt; To: its@ietf.org<br>
&gt; Subject: Re: [geonet/its] challenges proposed by Dimitri<br>
&gt; <br>
&gt; Let me try to understand this.<br>
&gt; <br>
&gt; What is a locator?&nbsp; Could it be 'latitude'?&nbsp; Or could it be =
an IP address?<br>
&gt; <br>
&gt; (because in LISP/FI terminology this term is used in the dichotomy<br>
&gt; address/locator of an IP address: it could itself be both).<br>
&gt; <br>
&gt; Alex<br>
&gt; <br>
&gt; Le 09/01/2014 11:29, karagian@cs.utwente.nl a =E9crit :<br>
&gt; &gt; Hi Dimitri,<br>
&gt; &gt;<br>
&gt; &gt; Thanks, so you mean that among others we should focus on:<br>
&gt; &gt;<br>
&gt; &gt; How could a locator could be mapped to a geographic area, and vic=
e<br>
&gt; &gt; versa, when a m:n relationship exists between locators and geogra=
phic<br>
&gt; &gt; areas? The m:n relationship exists when a locator can provide acc=
ess<br>
&gt; &gt; to m geographic areas and on the other hand a given geographic ar=
ea<br>
&gt; &gt; could provide access to n locators.<br>
&gt; &gt;<br>
&gt; &gt; Best regards, Georgios<br>
&gt; &gt;<br>
&gt; &gt;<br>
&gt; &gt;&gt; -----Original Message----- From: Papadimitriou, Dimitri (Dimi=
tri)<br>
&gt; &gt;&gt; [<a href=3D"about:blank" target=3D"_blank"></a>mailto:dimitri=
.papadimitriou@alcatel- lucent.com] Sent: donderdag<br>
&gt; &gt;&gt; 9 januari 2014 11:12 To: Karagiannis, G. (EWI) Subject: RE:<b=
r>
&gt; &gt;&gt; [geonet/its] challenges proposed by Dimitri<br>
&gt; &gt;&gt;<br>
&gt; &gt;&gt; Hello,<br>
&gt; &gt;&gt;<br>
&gt; &gt;&gt; Well the question doesn't stem from the representation itself=
 (they<br>
&gt; &gt;&gt; exist and IETF is not the place to standardize them --at best=
<br>
&gt; &gt;&gt; detail their succintness vs. precision knowing that our recor=
ding<br>
&gt; &gt;&gt; format might be constraining) but more importantly from the<b=
r>
&gt; &gt;&gt; relationship (and implication) to associated locators.<br>
&gt; &gt;&gt;<br>
&gt; &gt;&gt; In the general case we would have to deal with a m:n relation=
ship<br>
&gt; &gt;&gt; (n locators can provide access to a given geographic area and=
 on<br>
&gt; &gt;&gt; the other hand a given locator could provide access to m geog=
raphic<br>
&gt; &gt;&gt; areas).<br>
&gt; &gt;&gt;<br>
&gt; &gt;&gt; Thanks, -dimitri.<br>
&gt; &gt;&gt;<br>
&gt; &gt;&gt;&gt; -----Original Message----- From: karagian@cs.utwente.nl<b=
r>
&gt; &gt;&gt;&gt; [<a href=3D"mailto:karagian@cs.utwente.nl" target=3D"_bla=
nk">mailto:karagian@cs.utwente.nl</a>] Sent: Thursday, January 09, 2014<br>
&gt; &gt;&gt;&gt; 10:12 To: creed@opengeospatial.org Cc: its@ietf.org;<br>
&gt; &gt;&gt;&gt; alexandru.petrescu@gmail.com; Papadimitriou, Dimitri (Dim=
itri);<br>
&gt; &gt;&gt;&gt; farinacci@gmail.com Subject: RE: [geonet/its] challenges =
proposed<br>
&gt; &gt;&gt;&gt; by Dimitri<br>
&gt; &gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt; Hi Carl,<br>
&gt; &gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt; Thanks, Is it then possible to describe this issue in suc=
h a way<br>
&gt; &gt;&gt;&gt; that we can include it as a challenge/work item in the ch=
arter<br>
&gt; &gt;&gt;&gt; and/or in the problem statement draft? Please take into a=
ccount<br>
&gt; &gt;&gt;&gt; the comments of Dino!<br>
&gt; &gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt; Best regards, Georgios<br>
&gt; &gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt; -----Original Message----- From: Carl Reed<br>
&gt; &gt;&gt;&gt;&gt; [<a href=3D"mailto:creed@opengeospatial.org" target=
=3D"_blank">mailto:creed@opengeospatial.org</a>] Sent: woensdag 8 januari 2=
014<br>
&gt; &gt;&gt;&gt;&gt; 17:23 To: Alexandru Petrescu; Karagiannis, G. (EWI);<=
br>
&gt; &gt;&gt;&gt; dimitri.papadimitriou@alcatel-<br>
&gt; &gt;&gt;&gt;&gt; lucent.com Cc: its@ietf.org Subject: Re: [geonet/its]=
<br>
&gt; &gt;&gt;&gt;&gt; challenges proposed by Dimitri<br>
&gt; &gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt; Alex -<br>
&gt; &gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt; A very common practice in the land management communi=
ty is to<br>
&gt; &gt;&gt;&gt;&gt; create a unique parcel identifier based on the coordi=
nates of<br>
&gt; &gt;&gt;&gt;&gt; the centroid of the parcel. The approach generates a =
single PIN<br>
&gt; &gt;&gt;&gt;&gt; based on lat/long, which in<br>
&gt; &gt;&gt;&gt; the<br>
&gt; &gt;&gt;&gt;&gt; use case below reduces the number resolution mechanis=
ms.<br>
&gt; &gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt; <a href=3D"http://www.hendersoncountync.org/ca/howpin=
s.html" target=3D"_blank">
http://www.hendersoncountync.org/ca/howpins.html</a><br>
&gt; &gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt; Shows an example. They use state-plane but a similar =
approach<br>
&gt; &gt;&gt;&gt;&gt; could be used for lat/long coordinates.<br>
&gt; &gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt; And you also raise the question of coordinate referen=
ce<br>
&gt; &gt;&gt;&gt;&gt; systems (CRS)<br>
&gt; &gt;&gt;&gt; and<br>
&gt; &gt;&gt;&gt;&gt; the requirements perhaps to transform between CRS (al=
so known<br>
&gt; &gt;&gt;&gt;&gt; as re- projection). Regardless of the approach this g=
roup<br>
&gt; &gt;&gt;&gt;&gt; decides to follow, at<br>
&gt; &gt;&gt;&gt; a<br>
&gt; &gt;&gt;&gt;&gt; minimum the documentation needs to be very clear on t=
he CRS of<br>
&gt; &gt;&gt;&gt;&gt; the coordinate(s) being used. Simply stating lat/long=
 is<br>
&gt; &gt;&gt;&gt;&gt; unclear and can<br>
&gt; &gt;&gt;&gt; actually<br>
&gt; &gt;&gt;&gt;&gt; result in significant absolute location errors depend=
ing on<br>
&gt; &gt;&gt;&gt;&gt; the geoid<br>
&gt; &gt;&gt;&gt; used for<br>
&gt; &gt;&gt;&gt;&gt; a given lat/long pair. The existing location object (=
LO)<br>
&gt; &gt;&gt;&gt;&gt; definition used<br>
&gt; &gt;&gt;&gt; in PIDF<br>
&gt; &gt;&gt;&gt;&gt; and a number of other RFCs very clearly states the re=
levant<br>
&gt; &gt;&gt;&gt;&gt; EPSG code<br>
&gt; &gt;&gt;&gt; for<br>
&gt; &gt;&gt;&gt;&gt; the CRS being used. The approach for specifying a CRS=
 is<br>
&gt; &gt;&gt;&gt;&gt; defined by ISO<br>
&gt; &gt;&gt;&gt; and<br>
&gt; &gt;&gt;&gt;&gt; the OGC in a variety of documents.<br>
&gt; &gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt; The above may seem a trivial point, but ambiguity in =
the<br>
&gt; &gt;&gt;&gt;&gt; specification<br>
&gt; &gt;&gt;&gt; of the<br>
&gt; &gt;&gt;&gt;&gt; CRS for a coordinate set can lead to a number of issu=
es in<br>
&gt; &gt;&gt;&gt;&gt; terms of visualization, analysis, fusion, analytics a=
nd so<br>
&gt; &gt;&gt;&gt;&gt; forth.<br>
&gt; &gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt; Cheers<br>
&gt; &gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt; Carl<br>
&gt; &gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt; -----Original Message----- From: Alexandru Petrescu S=
ent:<br>
&gt; &gt;&gt;&gt;&gt; Wednesday, January 08, 2014 4:33 AM To: karagian@cs.u=
twente.nl<br>
&gt; &gt;&gt;&gt;&gt; ; dimitri.papadimitriou@alcatel-lucent.com Cc: its@ie=
tf.org<br>
&gt; &gt;&gt;&gt;&gt; Subject: Re: [geonet/its] challenges proposed by Dimi=
tri<br>
&gt; &gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt; Hi Georgios,<br>
&gt; &gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt; You are asking for feedback.<br>
&gt; &gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt; I have some thoughts on this.&nbsp; Far from me any i=
ntention to<br>
&gt; &gt;&gt;&gt;&gt; complexify things.<br>
&gt; &gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt; I will be happy to read others' remarks.<br>
&gt; &gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt; Le 06/01/2014 11:21, karagian@cs.utwente.nl a =E9crit=
 :<br>
&gt; &gt;&gt;&gt;&gt;&gt; Hi Dimitri,<br>
&gt; &gt;&gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt;&gt; Thank you very much!<br>
&gt; &gt;&gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt;&gt; The questions that you have listed below are very=
 useful and<br>
&gt; &gt;&gt;&gt;&gt;&gt; therefore I am forwarding your email to the its l=
ist!<br>
&gt; &gt;&gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt;&gt; Actually, I agree with the challenges that you de=
scribed and<br>
&gt; &gt;&gt;&gt;&gt;&gt; I will try to integrate them in what we have up t=
o now:<br>
&gt; &gt;&gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt;&gt; 1. How can a geographic area be &quot;represented=
&quot;, since several<br>
&gt; &gt;&gt;&gt;&gt;&gt; IP locators can give access to it.<br>
&gt; &gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt; An area could be represented by the coordinates of so=
me of the<br>
&gt; &gt;&gt;&gt;&gt; points on<br>
&gt; &gt;&gt;&gt; its<br>
&gt; &gt;&gt;&gt;&gt; perimeter, or other description of point coordinates =
and shape<br>
&gt; &gt;&gt;&gt; identifier.&nbsp; A<br>
&gt; &gt;&gt;&gt;&gt; volume description would have more possibilities.&nbs=
p; One should<br>
&gt; &gt;&gt;&gt;&gt; also<br>
&gt; &gt;&gt;&gt; consider<br>
&gt; &gt;&gt;&gt;&gt; maybe the projection alternatives.<br>
&gt; &gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt;&gt; 2. which resolution mechanism can be used at the =
source node<br>
&gt; &gt;&gt;&gt;&gt;&gt; e.g. Geo-locator (name)/ Geo-Physical coord.(addr=
.) to IP<br>
&gt; &gt;&gt;&gt;&gt;&gt; locator<br>
&gt; &gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt; Yes, resolution mechanism may be needed.<br>
&gt; &gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt; But, we currently know two kinds of resolution: - IP =
address<br>
&gt; &gt;&gt;&gt;&gt; &lt;-&gt; MAC address (ND) - IP address &lt;-&gt; nam=
e (DNS)<br>
&gt; &gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt; With geonet we'd talk new identifiers like geographic=
al<br>
&gt; &gt;&gt;&gt;&gt; coordinates. If<br>
&gt; &gt;&gt;&gt; we<br>
&gt; &gt;&gt;&gt;&gt; talked only one such coordinate (say 'latitude'), the=
n we'd<br>
&gt; &gt;&gt;&gt;&gt; need 3 new resolution mechanisms: - IP address &lt;-&=
gt; latitude<br>
&gt; &gt;&gt;&gt;&gt; (protocol IPL) - MAC address &lt;-&gt; latitude (prot=
ocol MACL) -<br>
&gt; &gt;&gt;&gt;&gt; name &lt;-&gt; latitude (protocol NL).<br>
&gt; &gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt; Maybe the latitude is not sufficient, so we'd need lo=
ngitude<br>
&gt; &gt;&gt;&gt;&gt; and<br>
&gt; &gt;&gt;&gt; altitude as<br>
&gt; &gt;&gt;&gt;&gt; well.&nbsp; This would give a total of 9 new resoluti=
on protocols.<br>
&gt; &gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt; On another hand, one may think of combining the lat/l=
ong/alt<br>
&gt; &gt;&gt;&gt;&gt; into a<br>
&gt; &gt;&gt;&gt; single<br>
&gt; &gt;&gt;&gt;&gt; identifier.&nbsp; That may appear simple at first sig=
ht, but may<br>
&gt; &gt;&gt;&gt;&gt; have its own difficulties, one of which being the nec=
essity of<br>
&gt; &gt;&gt;&gt;&gt; the representation of precision (HDOP, VDOP).<br>
&gt; &gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt; Not to mention the difficulty of coming up with an ag=
reed way<br>
&gt; &gt;&gt;&gt;&gt; of representing one single geographical coordinate (i=
t's not<br>
&gt; &gt;&gt;&gt;&gt; because<br>
&gt; &gt;&gt;&gt; everybody<br>
&gt; &gt;&gt;&gt;&gt; talks GPS now that someone will not talk Baidou tomor=
row, as<br>
&gt; &gt;&gt;&gt;&gt; an<br>
&gt; &gt;&gt;&gt; example).<br>
&gt; &gt;&gt;&gt;&gt; If I want to locate all the IP sensors of water level=
<br>
&gt; &gt;&gt;&gt;&gt; measurements where<br>
&gt; &gt;&gt;&gt; I live<br>
&gt; &gt;&gt;&gt;&gt; I am not able to use the GPS coordinates, I must use<=
br>
&gt; &gt;&gt;&gt;&gt; coordinates using<br>
&gt; &gt;&gt;&gt; the<br>
&gt; &gt;&gt;&gt;&gt; Lambert projection (just another example).<br>
&gt; &gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt; Yes, I am told conversion tools exist (e.g. same GNSS=
 chipset<br>
&gt; &gt;&gt;&gt;&gt; outputs<br>
&gt; &gt;&gt;&gt; both<br>
&gt; &gt;&gt;&gt;&gt; GPS and Galileo data, using an internal conversion).&=
nbsp; But then<br>
&gt; &gt;&gt;&gt;&gt; the<br>
&gt; &gt;&gt;&gt; question is<br>
&gt; &gt;&gt;&gt;&gt; whether we need conversion tools or resolution tools<=
br>
&gt; &gt;&gt;&gt;&gt; (protocols).<br>
&gt; &gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt; Alex<br>
&gt; &gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt;&gt; 3. which resolution mechanism can be used at IP l=
ocator (or<br>
&gt; &gt;&gt;&gt;&gt;&gt; edges) if packets would have to transit non IP is=
lands e.g.<br>
&gt; &gt;&gt;&gt;&gt;&gt; Geo-locator (name) to Geo-Physical coord.<br>
&gt; &gt;&gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt;&gt; 4. what is the rate and size of the records popul=
ating the<br>
&gt; &gt;&gt;&gt;&gt;&gt; resolution database<br>
&gt; &gt;&gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt;&gt; 5. at which level of &quot;stack&quot; this infor=
mation has to be<br>
&gt; &gt;&gt;&gt;&gt;&gt; inserted such that intermediate nodes can success=
fully reach<br>
&gt; &gt;&gt;&gt;&gt;&gt; the destination as expected by the source.<br>
&gt; &gt;&gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt;&gt; Best regards,<br>
&gt; &gt;&gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt;&gt; Georgios<br>
&gt; &gt;&gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt;&gt; *From:*Papadimitriou, Dimitri (Dimitri)<br>
&gt; &gt;&gt;&gt;&gt;&gt; [<a href=3D"mailto:dimitri.papadimitriou@alcatel-=
lucent.com" target=3D"_blank">mailto:dimitri.papadimitriou@alcatel-lucent.c=
om</a>] *Sent:*<br>
&gt; &gt;&gt;&gt;&gt;&gt; zaterdag 14 december 2013 23:56 *To:* Karagiannis=
, G. (EWI)<br>
&gt; &gt;&gt;&gt;&gt;&gt; *Subject:* RE: the uncrisp problem<br>
&gt; &gt;&gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt;&gt; Hello,<br>
&gt; &gt;&gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt;&gt; Reading all the discussions, I wonder why there i=
s no item<br>
&gt; &gt;&gt;&gt;&gt;&gt; discussing the following points:<br>
&gt; &gt;&gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt;&gt; At the network wide level<br>
&gt; &gt;&gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt;&gt; - Geo-locators (naming the geographic area) vs Ge=
o-physical<br>
&gt; &gt;&gt;&gt;&gt;&gt; coordinates (the actual coordinates of that area)=
<br>
&gt; &gt;&gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt;&gt; Have the same relationship as<br>
&gt; &gt;&gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt;&gt; - IP network locators vs none (known as of today)=
<br>
&gt; &gt;&gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt;&gt; Note however at the local level there is distinct=
ion between<br>
&gt; &gt;&gt;&gt;&gt;&gt; IP address (logical) and e.g. MAC address (physic=
al)<br>
&gt; &gt;&gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt;&gt; Thus there is first a question 1. what a geograph=
ic area<br>
&gt; &gt;&gt;&gt;&gt;&gt; &quot;represents&quot; because several IP locator=
s can give access to<br>
&gt; &gt;&gt;&gt;&gt;&gt; it.<br>
&gt; &gt;&gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt;&gt; Then the &quot;base&quot; problem stems as follow=
s<br>
&gt; &gt;&gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt;&gt; 2. which resolution mechanism at the source node =
e.g.<br>
&gt; &gt;&gt;&gt;&gt;&gt; Geo-locator (name)/ Geo-Physical coord.(addr.) to=
 IP locator<br>
&gt; &gt;&gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt;&gt; 3. which resolution mechanism at IP locator (or e=
dges) if<br>
&gt; &gt;&gt;&gt;&gt;&gt; packets would have to transit non IP islands e.g.=
 Geo-locator<br>
&gt; &gt;&gt;&gt;&gt;&gt; (name) to Geo-Physical coord.<br>
&gt; &gt;&gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt;&gt; 4. what is the rate and size of the records popul=
ating the<br>
&gt; &gt;&gt;&gt;&gt;&gt; resolution database<br>
&gt; &gt;&gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt;&gt; 5. at which level of &quot;stack&quot; this infor=
mation has to be<br>
&gt; &gt;&gt;&gt;&gt;&gt; inserted such that intermediate nodes can success=
fully reach<br>
&gt; &gt;&gt;&gt;&gt;&gt; the destination as expected by the source.<br>
&gt; &gt;&gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt;&gt; Thanks,<br>
&gt; &gt;&gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt;&gt; -dimitri.<br>
&gt; &gt;&gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt;&gt; _______________________________________________ i=
ts<br>
&gt; &gt;&gt; mailing list<br>
&gt; &gt;&gt;&gt;&gt;&gt; its@ietf.org <a href=3D"https://www.ietf.org/mail=
man/listinfo/its" target=3D"_blank">
https://www.ietf.org/mailman/listinfo/its</a><br>
&gt; &gt;&gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt;<br>
&gt; &gt;&gt;&gt;&gt; _______________________________________________ its m=
ailing<br>
&gt; &gt;&gt;&gt;&gt; list its@ietf.org <a href=3D"https://www.ietf.org/mai=
lman/listinfo/its" target=3D"_blank">
https://www.ietf.org/mailman/listinfo/its</a><br>
&gt; &gt;<br>
&gt; &gt; _______________________________________________ its mailing list<=
br>
&gt; &gt; its@ietf.org <a href=3D"https://www.ietf.org/mailman/listinfo/its=
" target=3D"_blank">
https://www.ietf.org/mailman/listinfo/its</a><br>
&gt; &gt;<br>
&gt; &gt;<br>
&gt; <br>
&gt; <br>
&gt; _______________________________________________<br>
&gt; its mailing list<br>
&gt; its@ietf.org<br>
&gt; <a href=3D"https://www.ietf.org/mailman/listinfo/its" target=3D"_blank=
">https://www.ietf.org/mailman/listinfo/its</a><br>
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--_000_FF1A9612A94D5C4A81ED7DE1039AB80F4F415E98EXMBX23adutwent_--

From creed@opengeospatial.org  Sun Jan 12 15:12:52 2014
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From: "Carl Reed" <creed@opengeospatial.org>
To: "Melinda Shore" <melinda.shore@gmail.com>, <its@ietf.org>
References: <FF1A9612A94D5C4A81ED7DE1039AB80F4F4152E5@EXMBX23.ad.utwente.nl> <52CD379A.9050500@gmail.com> <41743CE084894303AEC136DB1C42325D@OfficeHP> <D7B6A836-15D5-40F0-82B6-6A715D248EB0@gmail.com> <CBA134076CE541559AB741F3B7CBD121@OfficeHP> <52CECEF2.7080007@gmail.com> <957623232.361296.1389312468288.JavaMail.zimbra@opengeospatial.org> <52D023E2.9060206@gmail.com> <52D05DAF.4060207@gmail.com>
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Date: Sun, 12 Jan 2014 16:02:56 -0700
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Subject: Re: [geonet/its] challenges proposed by Dimitri
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Melinda -

A bit of back ground and a longish answer.

There is an ISO standard titled ISO 19107: Spatial Schema. This 
international standard specifies conceptual schemas for describing the 
spatial characteristics of geographic features (including geometries), and a 
set of spatial operations consistent with these schemas. It treats vector 
geometry and topology up to three dimensions.. Geometries range from point, 
multipoint, to polygon, to Bezier curves, to Clothoids. The OGC is currently 
revising 19107 as a joint project with ISO TC 211.

19107 is the basis for defining geometry in numerous implementation 
standards. The idea is by referencing a conceptual model for geometry, then 
implementations are consistent and not implementation driven other than 
perhaps the actual encoding mechanism.

The first implementation instance of ISO 19017 is OGC Simple Features and 
OGC Well Known Text (WKT). Also known as ISO 19125, SF describes the common 
architecture for simple feature geometry. Each Geometry Type has a 
Well-known Text Representation that can be used both to construct new 
instances of the type and to convert existing instances to textual form for 
alphanumeric display. (http://en.wikipedia.org/wiki/Well-known_text)

The most widely implementation instance is SF SQL. This second part of 
Simple Features Access (SFA), also called ISO 19125, is to define a standard 
Structured Query Language (SQL) schema that supports storage, retrieval, 
query and update of feature collections via the SQL Call-Level Interface 
(SQL/CLI) (ISO/IEC 9075-3:2003).

WKT and SF SQL are  very widely implemented, including in most (if not all) 
commercial and open source data base apps that handle geodata.

Another major implementation instance of 19107 (and other ISO conceptual 
models) is the OGC Geography Markup Language (GML). GML is an XML grammar 
defined by the OGC to express geographical features. GML serves as a 
modeling language for geographic systems as well as an open interchange 
format for geographic transactions on the Internet. Note that the concept of 
feature in GML is a very general one and includes not only conventional 
"vector" or discrete objects, but also coverages (see also GMLJP2) and 
sensor data.

Over the years, groups have defined numerous profiles and application 
schemas of GML. In 2007, IETF participants (GeoPriv) defined a GML 
application schema titled, "GML 3.1.1 PIDF-LO Shape Application Schema for 
use by the Internet Engineering Task Force (IETF)". This app schema is now 
widely used in the IETF and referenced in numerous RFCs.  Other standards 
organizations have developed their own profiles and app schemas of GML.

Finally, there are two simple encodings: GeoRSS and GeoJSON. Both implement 
a limited subset of geometries as defined in 19107. In GeoRSS, location 
content consists of geographical points, lines, and polygons of interest and 
related feature descriptions. (www.georss.org). GeoJSON is a format for 
encoding a variety of geographic data structures. (www.geojson.org). GeoJSON 
is being considered as an RFC.

AS you can see, there is considerable implementation experience and maturity 
in using an international standard for modeling geometry that is both vendor 
and data neutral.

I hope this information helps!

Regards

Carl Reed, PhD
CTO
OGC



-----Original Message----- 
From: Melinda Shore
Sent: Friday, January 10, 2014 1:53 PM
To: its@ietf.org
Subject: Re: [geonet/its] challenges proposed by Dimitri

On 1/10/14 7:46 AM, Alexandru Petrescu wrote:
> Right, I wonder whether any draft or RFC offers XML or JSON
> representations of geography concepts at IETF.

I don't believe so, and it's also my impression that while
there are open specifications for the representation of
polygons in geospatial data it's largely the case that
representations tend to be implementation-driven.  I've
asked someone who works in remote sensing and who does a
lot of computation if she'd be willing to write something
up on what's out there.

Melinda


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From melinda.shore@gmail.com  Sun Jan 12 16:34:55 2014
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Subject: Re: [geonet/its] challenges proposed by Dimitri
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On 1/12/14 2:02 PM, Carl Reed wrote:
> A bit of back ground and a longish answer.

That's extremely helpful - many thanks.

Melinda



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From: <karagian@cs.utwente.nl>
To: <its@ietf.org>
Thread-Topic: new descriptions of Geonet problem, challenges, requirements, assumptions + request  for volunteers 
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Date: Tue, 14 Jan 2014 12:22:14 +0000
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Subject: [geonet/its] new descriptions of Geonet problem, challenges, requirements, assumptions + request  for volunteers
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Hi all,

I have used the discussions that we have had up to now and updated the "Geo=
net" problem statement, challenges, requirements and assumptions.

Please note that we need to have a new version of the problem statement dra=
ft ready before the 17th of January!=20
Alex, Melinda is this right?

For this purpose, I have used the discussions that the following people hav=
e had in the geonet/its mailing list:
Alexandru Peterscu, Melinda Shore, Dino Farinacci, Brian Dickson, Dimitri P=
apadimitriou, Carl Reed, , Rex Buddenberg, Alison Chaiken, Georgios Karagia=
nnis.

Please note that we need volunteers to complete some issues associated with=
 the description of use cases and with the differences between Geonet and o=
ther IETF working groups:
(1)   ecrit, (2) LISP and (3) geopriv. Need volunteers for this!
Regarding the use cases I have assigned some volunteers (I hope that this i=
s acceptable):

o) Dissemination to a particular area:=20
Volunteer: Georgios (old use cases that were described in v.01 of the probl=
em statement draft, rewritten in few paragraphs)

o) Goods Tracking
Volunteer: Dino Farinacci?

o) Traffic Safety and Traffic Efficiency and Traffic Management
Volunteer: Georgios

o) Mobile RSU
Volunteer: Brian Dickson?

o) Identification of originating area (network operator, CDN)
Volunteer: needed?


Below you can find all these descriptions:

Geonet Problem:
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

Mechanisms and IETF Standardized  protocol(s) is/are needed to allow source=
  nodes anywhere in the Internet to disseminate packets to all/any node(s) =
using geographical area information, such as (1) geo-locators (names) and/o=
r (2) geographic (physical) coordinates, within a specified  target geograp=
hic area.


Geonet Challenges/Open issues:
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

o) Mechanisms and/or protocol network layer solutions are needed for the ac=
curate representation of geographic areas using (1) geo-locators (names) an=
d/or (2) geographic (physical) coordinates.

o) Mechanisms and/or protocol network layer solutions are needed to ensure =
that geographical area information (geo-locators (names) and/or geographic =
(physical) coordinates) is accurately mapped to an IP locator, e.g., an IP =
address. Mapping data bases can be maintained at the source nodes, IP locat=
or nodes, or intermediate nodes (e.g., edge nodes).

o) Mechanisms and/or protocol network layer solutions are needed to ensure =
that an IP locator, e.g., an IP address can be accurately mapped to a geogr=
aphic area information (geo-locators (names) and/or geographic (physical) c=
oordinates). Mapping data bases can be maintained at the source nodes, IP l=
ocator nodes, or intermediate nodes (e.g., edge nodes).

o) Mechanisms and protocol network layer solutions are needed to ensure tha=
t data packets generated by source nodes placed anywhere in the Internet ca=
n be forwarded over multiple hops by using, where possible, geographic phys=
ical coordinates of (1) the destination node(s) and/or (2) the intermediate=
 nodes for the routing decisions, instead of using their IP addresses.
(Note that in order to solve the above challenge it is NOT mandated that al=
l nodes located on the path from source to destination nodes are able to fo=
rward packets using the  geo-coordinates of (1) the destination node(s) and=
/or (2) the intermediate nodes for the routing decisions. This is emphasize=
d by using the words "where possible".)


Geonet Requirements
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

The specified mechanisms and protocol solutions:
o) SHOULD ideally support IPv4 and IPv6
o) MUST at a minimum support IPv6
o) MUST be able to use and insert geographic area information at the networ=
k layer.
o) MUST be able to disseminate the information from senders to the destinat=
ion nodes located in the target/destination geographic area in a point to m=
ultipoint manner.
o) SHOULD be able to be scalable and maintain its performance to acceptable=
 levels even it is applied to: (1) global coverage with small target/destin=
ation geographic areas, (2) large traffic volumes (large flows), (3) large =
number of active sources
o) MUST be able to provide accurate representation of geographic areas usin=
g (1) geo-locators (names) and/or (2) geographic (physical) coordinates.
o) MUST be able to ensure that geographical area information (geo-locators =
(names) and/or geographic (physical) coordinates) is accurately mapped to a=
n IP locator, e.g., an IP address, even if the relation between geographica=
l area information and IP locator is not a one-to-one relationship.
o) MUST be able to ensure that an IP locator, e.g., an IP address can be ac=
curately mapped to a geographic area information (geo-locators (names) and/=
or geographic (physical) coordinates), even if the relation between locator=
 and geographical information is not a one-to-one relationship.
o) MUST be able to ensure that the used mapping data bases of IP locators t=
o a geographic area information are up to date.
o) MUST support security and privacy: Given the sensitivity of location dat=
a and the possibility of the technology being used in emergency and/or road=
 traffic management scenarios we will pay particular attention to security =
and privacy.  A thorough threat analysis will be conducted, and mitigations=
 specified in any protocol documents which are developed objectives for all=
 supported communication modes. Security objectives particularly include in=
tegrity, privacy and non-repudiation and SHOULD protect the network and tra=
nsport layer protocol headers.  In addition the Internet-wide geo-networkin=
g solution MUST also protect privacy, i.e. provide confidentiality to perso=
nal data such as relation between node identifier and location.
o) SHOULD support timely and guaranteed delivery of information.


Geonet Assumptions:
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
o) The mechanisms and protocol solutions SHOULD be able to use and insert g=
eographic area information at the network layer.
o) The destination nodes can be any static or moving entities, such as host=
s, vehicles, sensors and actuators, goods, that are spread/located in a cer=
tain target/destination geographic area.
o) existing IETF mechanism and protocols like LISP, geopriv, ecrit and reve=
rse 911 will be taken into consideration during the design phase=20
o) The ISO 19107: Spatial Schema will be considered for the representation =
of spatial characteristics of geographic features (including geometries), a=
nd a set of spatial operations consistent with these schemas. ISO 19107 tre=
ats vector geometry and topology up to three dimensions.. Geometries range =
from point, multipoint, to polygon, to Bezier curves, to Clothoids.
o) The IEEE 1609.2, see below, will be considered  for security and privacy=
 support (https://standards.ieee.org/findstds/standard/1609.2-2013.html




Geonet Use Cases (no particular order)
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D
Please one paragraph per use case should be provided

o) Dissemination to a particular area:=20
Volunteer: Georgios (old use cases that were described in v.01 of the probl=
em statement draft, rewritten in few paragraphs)

o) Goods Tracking
Volunteer: Dino Farinacci?

o) Traffic Safety and Traffic Efficiency and Traffic Management
Volunteer: Georgios

o) Mobile RSU
Volunteer: Brian Dickson?

o) Identification of originating area (network operator, CDN)
Volunteer: needed?

Differences between Geonet and othet IETF working groups:
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
Text need to be written that emphasizes that are the main differences betwe=
en Geonet and at least (1) ecrit, (2) LISP and (3) geopriv. Need volunteers=
 for this!


Best regards,
Georgios

=20

From melinda.shore@gmail.com  Tue Jan 14 05:07:04 2014
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Subject: Re: [geonet/its] new descriptions of Geonet problem, challenges, requirements, assumptions + request  for volunteers
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On 1/14/14 3:22 AM, karagian@cs.utwente.nl wrote:
> o) The IEEE 1609.2, see below, will be considered  for security and
> privacy support
> (https://standards.ieee.org/findstds/standard/1609.2-2013.html

Is this available to participants for review?

Thanks,

Melinda

From karagian@cs.utwente.nl  Tue Jan 14 07:12:58 2014
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From: <karagian@cs.utwente.nl>
To: <melinda.shore@gmail.com>, <its@ietf.org>
Thread-Topic: [geonet/its] new descriptions of Geonet problem, challenges, requirements, assumptions + request  for volunteers
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Date: Tue, 14 Jan 2014 15:12:40 +0000
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References: <FF1A9612A94D5C4A81ED7DE1039AB80F4F4152E5@EXMBX23.ad.utwente.nl> <52CD379A.9050500@gmail.com> <41743CE084894303AEC136DB1C42325D@OfficeHP> <D7B6A836-15D5-40F0-82B6-6A715D248EB0@gmail.com> <CBA134076CE541559AB741F3B7CBD121@OfficeHP> <52CECEF2.7080007@gmail.com> <957623232.361296.1389312468288.JavaMail.zimbra@opengeospatial.org> <52D023E2.9060206@gmail.com> <52D05DAF.4060207@gmail.com>, <A1BF6F9CB71D4319A1A178D7F28DB42D@OfficeHP> <FF1A9612A94D5C4A81ED7DE1039AB80F4F41A1EF@EXMBX23.ad.utwente.nl>, <52D53666.3020703@gmail.com>
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Subject: Re: [geonet/its] new descriptions of Geonet problem, challenges, requirements, assumptions + request  for volunteers
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Hi Melinda,



Not from my side!



Alex, you used this URL in the etherpad link. Do you know if it is availabl=
e to participants for review?



Best regards,

Georgios



________________________________
Van: its [its-bounces@ietf.org] namens Melinda Shore [melinda.shore@gmail.c=
om]
Verzonden: dinsdag 14 januari 2014 14:06
To: its@ietf.org
Onderwerp: Re: [geonet/its] new descriptions of Geonet problem, challenges,=
 requirements, assumptions + request for volunteers

On 1/14/14 3:22 AM, karagian@cs.utwente.nl wrote:
> o) The IEEE 1609.2, see below, will be considered  for security and
> privacy support
> (<about:blank>https://standards.ieee.org/findstds/standard/1609.2-2013.ht=
ml

Is this available to participants for review?

Thanks,

Melinda
_______________________________________________
its mailing list
its@ietf.org
https://www.ietf.org/mailman/listinfo/its

--_000_FF1A9612A94D5C4A81ED7DE1039AB80F4F41A248EXMBX23adutwent_
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E: 10pt">
<p>Hi Melinda, </p>
<p>&nbsp;</p>
<p>Not from my side! </p>
<p>&nbsp;</p>
<p>Alex, you used this URL in the etherpad link. Do you know if it is avail=
able to participants for review?</p>
<p>&nbsp;</p>
<p>Best regards,</p>
<p>Georgios</p>
<p>&nbsp;</p>
<div>
<hr tabindex=3D"-1">
<div id=3D"x_divRplyFwdMsg"><font color=3D"#000000" size=3D"2" face=3D"Taho=
ma"><b>Van:</b> its [its-bounces@ietf.org] namens Melinda Shore [melinda.sh=
ore@gmail.com]<br>
<b>Verzonden:</b> dinsdag 14 januari 2014 14:06<br>
<b>To:</b> its@ietf.org<br>
<b>Onderwerp:</b> Re: [geonet/its] new descriptions of Geonet problem, chal=
lenges, requirements, assumptions &#43; request for volunteers<br>
</font><br>
</div>
<div></div>
</div>
<font size=3D"2"><span style=3D"FONT-SIZE: 10pt">
<div class=3D"PlainText">On 1/14/14 3:22 AM, karagian@cs.utwente.nl wrote:<=
br>
&gt; o) The IEEE 1609.2, see below, will be considered&nbsp; for security a=
nd<br>
&gt; privacy support<br>
&gt; (<a href=3D"about:blank" target=3D"_blank"></a>https://standards.ieee.=
org/findstds/standard/1609.2-2013.html<br>
<br>
Is this available to participants for review?<br>
<br>
Thanks,<br>
<br>
Melinda<br>
_______________________________________________<br>
its mailing list<br>
its@ietf.org<br>
<a href=3D"https://www.ietf.org/mailman/listinfo/its" target=3D"_blank">htt=
ps://www.ietf.org/mailman/listinfo/its</a><br>
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From wwhyte@securityinnovation.com  Tue Jan 14 08:10:23 2014
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References: <FF1A9612A94D5C4A81ED7DE1039AB80F4F4152E5@EXMBX23.ad.utwente.nl> <52CD379A.9050500@gmail.com> <41743CE084894303AEC136DB1C42325D@OfficeHP> <D7B6A836-15D5-40F0-82B6-6A715D248EB0@gmail.com> <CBA134076CE541559AB741F3B7CBD121@OfficeHP> <52CECEF2.7080007@gmail.com> <957623232.361296.1389312468288.JavaMail.zimbra@opengeospatial.org> <52D023E2.9060206@gmail.com> <52D05DAF.4060207@gmail.com> <A1BF6F9CB71D4319A1A178D7F28DB42D@OfficeHP> <FF1A9612A94D5C4A81ED7DE1039AB80F4F41A1EF@EXMBX23.ad.utwente.nl> <52D53666.3020703@gmail.com> <FF1A9612A94D5C4A81ED7DE1039AB80F4F41A248@EXMBX23.ad.utwente.nl>
Date: Tue, 14 Jan 2014 11:10:07 -0500
Message-ID: <CACz1E9qorGkhcmxkDoXm7dz2TSK6=2pfqvbVnfw0xGBActjBaw@mail.gmail.com>
From: William Whyte <wwhyte@securityinnovation.com>
To: Georgios Karagiannis <karagian@cs.utwente.nl>
Content-Type: multipart/alternative; boundary=047d7b2e7b0e07ebb304eff06dfc
Cc: Melinda Shore <melinda.shore@gmail.com>, its@ietf.org
Subject: Re: [geonet/its] new descriptions of Geonet problem, challenges, requirements, assumptions + request for volunteers
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--047d7b2e7b0e07ebb304eff06dfc
Content-Type: text/plain; charset=ISO-8859-1

Hi all -- I'm editor of 1609.2, which is a published IEEE standard. With
that hat on I should point out that it's available for purchase from the
link provided. IEEE funds standards activities in part with revenue from
standards so any institutions that can afford to purchase the standards
should really go that route. If you're active in the 1609 working group you
often have access to early drafts of the standards documents.

Cheers,

William


On Tue, Jan 14, 2014 at 10:12 AM, <karagian@cs.utwente.nl> wrote:

>  Hi Melinda,
>
>
>
> Not from my side!
>
>
>
> Alex, you used this URL in the etherpad link. Do you know if it is
> available to participants for review?
>
>
>
> Best regards,
>
> Georgios
>
>
>  ------------------------------
> *Van:* its [its-bounces@ietf.org] namens Melinda Shore [
> melinda.shore@gmail.com]
> *Verzonden:* dinsdag 14 januari 2014 14:06
> *To:* its@ietf.org
> *Onderwerp:* Re: [geonet/its] new descriptions of Geonet problem,
> challenges, requirements, assumptions + request for volunteers
>
>   On 1/14/14 3:22 AM, karagian@cs.utwente.nl wrote:
> > o) The IEEE 1609.2, see below, will be considered  for security and
> > privacy support
> > (https://standards.ieee.org/findstds/standard/1609.2-2013.html
>
> Is this available to participants for review?
>
> Thanks,
>
> Melinda
> _______________________________________________
> its mailing list
> its@ietf.org
> https://www.ietf.org/mailman/listinfo/its
>
> _______________________________________________
> its mailing list
> its@ietf.org
> https://www.ietf.org/mailman/listinfo/its
>
>

--047d7b2e7b0e07ebb304eff06dfc
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<div dir=3D"ltr">Hi all -- I&#39;m editor of 1609.2, which is a published I=
EEE standard. With that hat on I should point out that it&#39;s available f=
or purchase from the link provided. IEEE funds standards activities in part=
 with revenue from standards so any institutions that can afford to purchas=
e the standards should really go that route. If you&#39;re active in the 16=
09 working group you often have access to early drafts of the standards doc=
uments.<div>
<br></div><div>Cheers,</div><div><br></div><div>William</div></div><div cla=
ss=3D"gmail_extra"><br><br><div class=3D"gmail_quote">On Tue, Jan 14, 2014 =
at 10:12 AM,  <span dir=3D"ltr">&lt;<a href=3D"mailto:karagian@cs.utwente.n=
l" target=3D"_blank">karagian@cs.utwente.nl</a>&gt;</span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">




<div>
<div style=3D"direction:ltr;font-size:10pt;font-family:Tahoma">
<p>Hi Melinda, </p>
<p>=A0</p>
<p>Not from my side! </p>
<p>=A0</p>
<p>Alex, you used this URL in the etherpad link. Do you know if it is avail=
able to participants for review?</p>
<p>=A0</p>
<p>Best regards,</p>
<p>Georgios</p>
<p>=A0</p>
<div>
<hr>
<div><font color=3D"#000000" face=3D"Tahoma"><b>Van:</b> its [<a href=3D"ma=
ilto:its-bounces@ietf.org" target=3D"_blank">its-bounces@ietf.org</a>] name=
ns Melinda Shore [<a href=3D"mailto:melinda.shore@gmail.com" target=3D"_bla=
nk">melinda.shore@gmail.com</a>]<br>

<b>Verzonden:</b> dinsdag 14 januari 2014 14:06<br>
<b>To:</b> <a href=3D"mailto:its@ietf.org" target=3D"_blank">its@ietf.org</=
a><br>
<b>Onderwerp:</b> Re: [geonet/its] new descriptions of Geonet problem, chal=
lenges, requirements, assumptions + request for volunteers<br>
</font><br>
</div>
<div></div>
</div><div><div class=3D"h5">
<font><span style=3D"FONT-SIZE:10pt">
<div>On 1/14/14 3:22 AM, <a href=3D"mailto:karagian@cs.utwente.nl" target=
=3D"_blank">karagian@cs.utwente.nl</a> wrote:<br>
&gt; o) The IEEE 1609.2, see below, will be considered=A0 for security and<=
br>
&gt; privacy support<br>
&gt; (<a></a><a href=3D"https://standards.ieee.org/findstds/standard/1609.2=
-2013.html" target=3D"_blank">https://standards.ieee.org/findstds/standard/=
1609.2-2013.html</a><br>
<br>
Is this available to participants for review?<br>
<br>
Thanks,<br>
<br>
Melinda<br>
_______________________________________________<br>
its mailing list<br>
<a href=3D"mailto:its@ietf.org" target=3D"_blank">its@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/its" target=3D"_blank">htt=
ps://www.ietf.org/mailman/listinfo/its</a><br>
</div>
</span></font></div></div></div>
</div>

<br>_______________________________________________<br>
its mailing list<br>
<a href=3D"mailto:its@ietf.org">its@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/its" target=3D"_blank">htt=
ps://www.ietf.org/mailman/listinfo/its</a><br>
<br></blockquote></div><br></div>

--047d7b2e7b0e07ebb304eff06dfc--

From melinda.shore@gmail.com  Tue Jan 14 08:16:34 2014
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Date: Tue, 14 Jan 2014 07:16:17 -0900
From: Melinda Shore <melinda.shore@gmail.com>
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To: William Whyte <wwhyte@securityinnovation.com>
References: <FF1A9612A94D5C4A81ED7DE1039AB80F4F4152E5@EXMBX23.ad.utwente.nl> <52CD379A.9050500@gmail.com> <41743CE084894303AEC136DB1C42325D@OfficeHP> <D7B6A836-15D5-40F0-82B6-6A715D248EB0@gmail.com> <CBA134076CE541559AB741F3B7CBD121@OfficeHP> <52CECEF2.7080007@gmail.com> <957623232.361296.1389312468288.JavaMail.zimbra@opengeospatial.org> <52D023E2.9060206@gmail.com> <52D05DAF.4060207@gmail.com> <A1BF6F9CB71D4319A1A178D7F28DB42D@OfficeHP> <FF1A9612A94D5C4A81ED7DE1039AB80F4F41A1EF@EXMBX23.ad.utwente.nl> <52D53666.3020703@gmail.com> <FF1A9612A94D5C4A81ED7DE1039AB80F4F41A248@EXMBX23.ad.utwente.nl> <CACz1E9qorGkhcmxkDoXm7dz2TSK6=2pfqvbVnfw0xGBActjBaw@mail.gmail.com>
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Cc: Georgios Karagiannis <karagian@cs.utwente.nl>, its@ietf.org
Subject: Re: [geonet/its] new descriptions of Geonet problem, challenges, requirements, assumptions + request for volunteers
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On 1/14/14 7:10 AM, William Whyte wrote:
> Hi all -- I'm editor of 1609.2, which is a published IEEE standard. With
> that hat on I should point out that it's available for purchase from the
> link provided. IEEE funds standards activities in part with revenue from
> standards so any institutions that can afford to purchase the standards
> should really go that route. If you're active in the 1609 working group
> you often have access to early drafts of the standards documents.

To be honest I'm not clear on what IETF policy is around
this sort of problem, although personally my feeling is
that if it's useful - and applicable - we should be giving
it serious consideration.  But, if many participants don't
have access to it, that's a problem.  Also, in general
there's a preference for using IETF technologies where
possible.  One thing worth looking at is the extent to
which some of the work coming out of geopriv can be used
here.

Melinda


From scott@cadzow.com  Tue Jan 14 08:20:00 2014
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From: Scott Cadzow <scott@cadzow.com>
To: 'William Whyte' <wwhyte@securityinnovation.com>, 'Georgios Karagiannis' <karagian@cs.utwente.nl>
References: <FF1A9612A94D5C4A81ED7DE1039AB80F4F4152E5@EXMBX23.ad.utwente.nl> <52CD379A.9050500@gmail.com> <41743CE084894303AEC136DB1C42325D@OfficeHP> <D7B6A836-15D5-40F0-82B6-6A715D248EB0@gmail.com> <CBA134076CE541559AB741F3B7CBD121@OfficeHP> <52CECEF2.7080007@gmail.com> <957623232.361296.1389312468288.JavaMail.zimbra@opengeospatial.org> <52D023E2.9060206@gmail.com> <52D05DAF.4060207@gmail.com> <A1BF6F9CB71D4319A1A178D7F28DB42D@OfficeHP> <FF1A9612A94D5C4A81ED7DE1039AB80F4F41A1EF@EXMBX23.ad.utwente.nl> <52D53666.3020703@gmail.com> <FF1A9612A94D5C4A81ED7DE1039AB80F4F41A248@EXMBX23.ad.utwente.nl> <CACz1E9qorGkhcmxkDoXm7dz2TSK6=2pfqvbVnfw0xGBActjBaw@mail.gmail.com>
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Cc: 'Melinda Shore' <melinda.shore@gmail.com>, its@ietf.org
Subject: Re: [geonet/its] new descriptions of Geonet problem, challenges, requirements, assumptions + request for volunteers
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Endorsing what William has indicated I'd also note that IEEE 1609.2 is the
basis of the security and privacy protection implementation, and core models
in ETSI and ISO for Co-operative ITS (C-ITS). Thus looking at ETSI's TS 102
941 for example you should find a model of using 1609.2 in the privacy
protection mode for C-ITS. ETSI's standards are available from
http://pda.etsi.org/pda/queryform.asp for free for any published document.

 

Best regards,

 

Scott

 

From: its [mailto:its-bounces@ietf.org] On Behalf Of William Whyte
Sent: 14 January 2014 16:10
To: Georgios Karagiannis
Cc: Melinda Shore; its@ietf.org
Subject: Re: [geonet/its] new descriptions of Geonet problem, challenges,
requirements, assumptions + request for volunteers

 

Hi all -- I'm editor of 1609.2, which is a published IEEE standard. With
that hat on I should point out that it's available for purchase from the
link provided. IEEE funds standards activities in part with revenue from
standards so any institutions that can afford to purchase the standards
should really go that route. If you're active in the 1609 working group you
often have access to early drafts of the standards documents.

 

Cheers,

 

William

 

On Tue, Jan 14, 2014 at 10:12 AM, <karagian@cs.utwente.nl> wrote:

Hi Melinda, 

 

Not from my side! 

 

Alex, you used this URL in the etherpad link. Do you know if it is available
to participants for review?

 

Best regards,

Georgios

 

  _____  

Van: its [its-bounces@ietf.org] namens Melinda Shore
[melinda.shore@gmail.com]
Verzonden: dinsdag 14 januari 2014 14:06
To: its@ietf.org
Onderwerp: Re: [geonet/its] new descriptions of Geonet problem, challenges,
requirements, assumptions + request for volunteers

On 1/14/14 3:22 AM, karagian@cs.utwente.nl wrote:
> o) The IEEE 1609.2, see below, will be considered  for security and
> privacy support
> (https://standards.ieee.org/findstds/standard/1609.2-2013.html

Is this available to participants for review?

Thanks,

Melinda
_______________________________________________
its mailing list
its@ietf.org
https://www.ietf.org/mailman/listinfo/its


_______________________________________________
its mailing list
its@ietf.org
https://www.ietf.org/mailman/listinfo/its

 


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</o:shapelayout></xml><![endif]--></head><body lang=3DEN-GB link=3Dblue =
vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Endorsing what William has indicated I&#8217;d also note that IEEE =
1609.2 is the basis of the security and privacy protection =
implementation, and core models in ETSI and ISO for Co-operative ITS =
(C-ITS). Thus looking at ETSI&#8217;s TS 102 941 for example you should =
find a model of using 1609.2 in the privacy protection mode for C-ITS. =
ETSI&#8217;s standards are available from <a =
href=3D"http://pda.etsi.org/pda/queryform.asp">http://pda.etsi.org/pda/qu=
eryform.asp</a> for free for any published =
document.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Best regards,<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Scott<o:p></o:p></span></p><p class=3DMsoNormal><a =
name=3D"_MailEndCompose"><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p>&nbsp;</o:p></span></a></p><p class=3DMsoNormal><b><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span>=
</b><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'> its =
[mailto:its-bounces@ietf.org] <b>On Behalf Of </b>William =
Whyte<br><b>Sent:</b> 14 January 2014 16:10<br><b>To:</b> Georgios =
Karagiannis<br><b>Cc:</b> Melinda Shore; its@ietf.org<br><b>Subject:</b> =
Re: [geonet/its] new descriptions of Geonet problem, challenges, =
requirements, assumptions + request for =
volunteers<o:p></o:p></span></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><p class=3DMsoNormal>Hi all =
-- I'm editor of 1609.2, which is a published IEEE standard. With that =
hat on I should point out that it's available for purchase from the link =
provided. IEEE funds standards activities in part with revenue from =
standards so any institutions that can afford to purchase the standards =
should really go that route. If you're active in the 1609 working group =
you often have access to early drafts of the standards =
documents.<o:p></o:p></p><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal>Cheers,<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal>William<o:p></o:p></p></div></div><div><p =
class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'><o:p>&nbsp;</o:p></p><div><p =
class=3DMsoNormal>On Tue, Jan 14, 2014 at 10:12 AM, &lt;<a =
href=3D"mailto:karagian@cs.utwente.nl" =
target=3D"_blank">karagian@cs.utwente.nl</a>&gt; =
wrote:<o:p></o:p></p><div><div><p><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Hi Melinda, =
<o:p></o:p></span></p><p><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>&nbsp;<o:p><=
/o:p></span></p><p><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Not from my =
side! <o:p></o:p></span></p><p><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>&nbsp;<o:p><=
/o:p></span></p><p><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Alex, you =
used this URL in the etherpad link. Do you know if it is available to =
participants for review?<o:p></o:p></span></p><p><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>&nbsp;<o:p><=
/o:p></span></p><p><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Best =
regards,<o:p></o:p></span></p><p><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Georgios<o:p=
></o:p></span></p><p><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>&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:"Tahoma","sans-serif"'><hr =
size=3D2 width=3D"100%" align=3Dcenter></span></div><div><p =
class=3DMsoNormal style=3D'margin-bottom:12.0pt'><b><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'>=
Van:</span></b><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'>=
 its [<a href=3D"mailto:its-bounces@ietf.org" =
target=3D"_blank">its-bounces@ietf.org</a>] namens Melinda Shore [<a =
href=3D"mailto:melinda.shore@gmail.com" =
target=3D"_blank">melinda.shore@gmail.com</a>]<br><b>Verzonden:</b> =
dinsdag 14 januari 2014 14:06<br><b>To:</b> <a =
href=3D"mailto:its@ietf.org" =
target=3D"_blank">its@ietf.org</a><br><b>Onderwerp:</b> Re: [geonet/its] =
new descriptions of Geonet problem, challenges, requirements, =
assumptions + request for volunteers</span><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p></o:p><=
/span></p></div></div><div><div><div><p class=3DMsoNormal><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>On 1/14/14 =
3:22 AM, <a href=3D"mailto:karagian@cs.utwente.nl" =
target=3D"_blank">karagian@cs.utwente.nl</a> wrote:<br>&gt; o) The IEEE =
1609.2, see below, will be considered&nbsp; for security and<br>&gt; =
privacy support<br>&gt; (<a =
href=3D"https://standards.ieee.org/findstds/standard/1609.2-2013.html" =
target=3D"_blank">https://standards.ieee.org/findstds/standard/1609.2-201=
3.html</a><br><br>Is this available to participants for =
review?<br><br>Thanks,<br><br>Melinda<br>________________________________=
_______________<br>its mailing list<br><a href=3D"mailto:its@ietf.org" =
target=3D"_blank">its@ietf.org</a><br><a =
href=3D"https://www.ietf.org/mailman/listinfo/its" =
target=3D"_blank">https://www.ietf.org/mailman/listinfo/its</a><o:p></o:p=
></span></p></div></div></div></div></div><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'><br>______________________________________=
_________<br>its mailing list<br><a =
href=3D"mailto:its@ietf.org">its@ietf.org</a><br><a =
href=3D"https://www.ietf.org/mailman/listinfo/its" =
target=3D"_blank">https://www.ietf.org/mailman/listinfo/its</a><o:p></o:p=
></p></div><p =
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Subject: Re: [geonet/its] new descriptions of Geonet problem, challenges, requirements, assumptions + request for volunteers
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Le 14/01/2014 17:10, William Whyte a écrit :
> Hi all -- I'm editor of 1609.2, which is a published IEEE standard. With
> that hat on I should point out that it's available for purchase from the
> link provided. IEEE funds standards activities in part with revenue from
> standards so any institutions that can afford to purchase the standards
> should really go that route. If you're active in the 1609 working group
> you often have access to early drafts of the standards documents.

William - thanks for the update.

Many institutions working on standards can indeed afford to purchase 
some documents.  For example my employer had access to it at some time.

I suppose there could exist a means - still private - whereby documents 
could be shared between IETF participants and IEEE participants driven 
by a common goal of making vehicles communicate.

Alex

>
> Cheers,
>
> William
>
>
> On Tue, Jan 14, 2014 at 10:12 AM, <karagian@cs.utwente.nl
> <mailto:karagian@cs.utwente.nl>> wrote:
>
>     Hi Melinda,
>
>     Not from my side!
>
>     Alex, you used this URL in the etherpad link. Do you know if it is
>     available to participants for review?
>
>     Best regards,
>
>     Georgios
>
>     ------------------------------------------------------------------------
>     *Van:* its [its-bounces@ietf.org <mailto:its-bounces@ietf.org>]
>     namens Melinda Shore [melinda.shore@gmail.com
>     <mailto:melinda.shore@gmail.com>]
>     *Verzonden:* dinsdag 14 januari 2014 14:06
>     *To:* its@ietf.org <mailto:its@ietf.org>
>     *Onderwerp:* Re: [geonet/its] new descriptions of Geonet problem,
>     challenges, requirements, assumptions + request for volunteers
>
>     On 1/14/14 3:22 AM, karagian@cs.utwente.nl
>     <mailto:karagian@cs.utwente.nl> wrote:
>     > o) The IEEE 1609.2, see below, will be considered  for security and
>     > privacy support
>     > (https://standards.ieee.org/findstds/standard/1609.2-2013.html
>
>     Is this available to participants for review?
>
>     Thanks,
>
>     Melinda
>     _______________________________________________
>     its mailing list
>     its@ietf.org <mailto:its@ietf.org>
>     https://www.ietf.org/mailman/listinfo/its
>
>     _______________________________________________
>     its mailing list
>     its@ietf.org <mailto:its@ietf.org>
>     https://www.ietf.org/mailman/listinfo/its
>
>
>
>
> _______________________________________________
> its mailing list
> its@ietf.org
> https://www.ietf.org/mailman/listinfo/its
>



From alexandru.petrescu@gmail.com  Tue Jan 14 08:21:11 2014
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Le 14/01/2014 16:12, karagian@cs.utwente.nl a écrit :
> Hi Melinda,
>
> Not from my side!
>
> Alex, you used this URL in the etherpad link. Do you know if it is
> available to participants for review?

Hi Georgios,

I am not sure it is me who pasted this URL in the etherpad.  I guess 
maybe Alison?  Or otherwise anyone who wanted to type there (I am not 
sure there is an access log there).

Alex

>
> Best regards,
>
> Georgios
>
> ------------------------------------------------------------------------
> *Van:* its [its-bounces@ietf.org] namens Melinda Shore
> [melinda.shore@gmail.com]
> *Verzonden:* dinsdag 14 januari 2014 14:06
> *To:* its@ietf.org
> *Onderwerp:* Re: [geonet/its] new descriptions of Geonet problem,
> challenges, requirements, assumptions + request for volunteers
>
> On 1/14/14 3:22 AM, karagian@cs.utwente.nl wrote:
>> o) The IEEE 1609.2, see below, will be considered  for security and
>> privacy support
>> (<about:blank>https://standards.ieee.org/findstds/standard/1609.2-2013.html
>
> Is this available to participants for review?
>
> Thanks,
>
> Melinda
> _______________________________________________
> its mailing list
> its@ietf.org
> https://www.ietf.org/mailman/listinfo/its
>
>
> _______________________________________________
> its mailing list
> its@ietf.org
> https://www.ietf.org/mailman/listinfo/its
>



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Subject: Re: [geonet/its] new descriptions of Geonet problem, challenges, requirements, assumptions + request  for volunteers
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On Tue, 2014-01-14 at 12:22 +0000, karagian@cs.utwente.nl wrote:
> o) SHOULD be able to be scalable and maintain its performance to
> acceptable levels even it is applied to: (1) global coverage with
> small target/destination geographic areas, (2) large traffic volumes
> (large flows), (3) large number of active sources

s/scaleable/stable

Reason.  Spectrum is an inelastic resource so you can't just up comms
capacity when sources increase.  What is important is determinism vs
stochasticism.  Because deterministic systems are stable under
overload.  
     At layer 2 we see this in the different MACs.  CSMA (as in WiFi) is
what we used to call 'free net' and crashes under overload.  TDMA MACs
like that in 802.16 are what we used to call 'directed net' and are
stable (and near-deterministic).  


From karagian@cs.utwente.nl  Wed Jan 15 00:02:41 2014
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From alexandru.petrescu@gmail.com  Wed Jan 15 04:46:49 2014
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Subject: Re: [geonet/its] new descriptions of Geonet problem, challenges, requirements, assumptions + request  for volunteers
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Le 15/01/2014 09:02, karagian@cs.utwente.nl a écrit :
> Hi Rex,
>
> Thanks for the comment, however, I have a question regarding your
> proposed text for the stability requirement:
>
>> s/scaleable/stable Reason.  Spectrum is an inelastic resource so
>> you can't just up comms capacity when sources increase.  What is
>> important is determinism vs stochasticism.  Because deterministic
>> systems are stable under overload. At layer 2 we see this in the
>> different MACs.  CSMA (as in WiFi) is what we used to call 'free
>> net' and crashes under overload.  TDMA MACs like that in 802.16 are
>> what we used to call 'directed net' and are stable (and near-
>> deterministic).
>
> How does this requirement fits to the work that IETF needs to do?
> Please provide the requirement that the Geonet solution will need to
>  support?

Sorry for interfering in your exchange, but I believe his remark - to
which I agree separately - is about this GeoNet requirement:

> The specified mechanisms and protocol solutions:
[...]
> o) SHOULD be able to be scalable and maintain its performance to
> acceptable levels even it is applied to: (1) global coverage with
> small target/destination geographic areas, (2) large traffic volumes
>  (large flows), (3) large number of active sources

To accommodate his remark maybe we could rather say:

> SHOULD be able to scale, leverage on stable and deterministic
> underlayers when available, and maintain its performance to
> acceptable levels even if it is applied to: (1) global coverage with
> small target/destination geographic areas, (2) large traffic volumes
> (large flows), (3) large number of active sources

Would this read better?

Alex




>
> Best regards, Georgios
>
>
>
>
>
>> -----Original Message----- From: Rex Buddenberg
>> [mailto:buddenbergr@gmail.com] Sent: dinsdag 14 januari 2014 20:28
>> To: Karagiannis, G. (EWI) Cc: its@ietf.org;
>> dimitri.papadimitriou@alcatel.be Subject: Re: [geonet/its] new
>> descriptions of Geonet problem, challenges, requirements,
>> assumptions + request for volunteers
>>
>> On Tue, 2014-01-14 at 12:22 +0000, karagian@cs.utwente.nl wrote:
>>> o) SHOULD be able to be scalable and maintain its performance to
>>> acceptable levels even it is applied to: (1) global coverage with
>>> small target/destination geographic areas, (2) large traffic
>>> volumes (large flows), (3) large number of active sources
>>
>> s/scaleable/stable
>>
>> Reason.  Spectrum is an inelastic resource so you can't just up
>> comms capacity when sources increase.  What is important is
>> determinism vs stochasticism.  Because deterministic systems are
>> stable under overload. At layer 2 we see this in the different
>> MACs.  CSMA (as in WiFi) is what we used to call 'free net' and
>> crashes under overload.  TDMA MACs like that in 802.16 are what we
>>  used to call 'directed net' and are stable (and near-
>> deterministic).
>
> _______________________________________________ its mailing list
> its@ietf.org https://www.ietf.org/mailman/listinfo/its
>
>



From karagian@cs.utwente.nl  Wed Jan 15 04:49:38 2014
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From: <karagian@cs.utwente.nl>
To: <alexandru.petrescu@gmail.com>, <its@ietf.org>
Thread-Topic: [geonet/its] new descriptions of Geonet problem, challenges, requirements, assumptions + request  for volunteers
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Subject: Re: [geonet/its] new descriptions of Geonet problem, challenges, requirements, assumptions + request  for volunteers
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Hi Alex,

Okay, your proposed txt is fine for me!

Best regards,
Georgios


> -----Original Message-----
> From: its [mailto:its-bounces@ietf.org] On Behalf Of Alexandru Petrescu
> Sent: woensdag 15 januari 2014 13:47
> To: its@ietf.org
> Subject: Re: [geonet/its] new descriptions of Geonet problem, challenges,
> requirements, assumptions + request for volunteers
>=20
> Le 15/01/2014 09:02, karagian@cs.utwente.nl a =E9crit :
> > Hi Rex,
> >
> > Thanks for the comment, however, I have a question regarding your
> > proposed text for the stability requirement:
> >
> >> s/scaleable/stable Reason.  Spectrum is an inelastic resource so you
> >> can't just up comms capacity when sources increase.  What is
> >> important is determinism vs stochasticism.  Because deterministic
> >> systems are stable under overload. At layer 2 we see this in the
> >> different MACs.  CSMA (as in WiFi) is what we used to call 'free net'
> >> and crashes under overload.  TDMA MACs like that in 802.16 are what
> >> we used to call 'directed net' and are stable (and near-
> >> deterministic).
> >
> > How does this requirement fits to the work that IETF needs to do?
> > Please provide the requirement that the Geonet solution will need to
> > support?
>=20
> Sorry for interfering in your exchange, but I believe his remark - to whi=
ch I
> agree separately - is about this GeoNet requirement:
>=20
> > The specified mechanisms and protocol solutions:
> [...]
> > o) SHOULD be able to be scalable and maintain its performance to
> > acceptable levels even it is applied to: (1) global coverage with
> > small target/destination geographic areas, (2) large traffic volumes
> > (large flows), (3) large number of active sources
>=20
> To accommodate his remark maybe we could rather say:
>=20
> > SHOULD be able to scale, leverage on stable and deterministic
> > underlayers when available, and maintain its performance to acceptable
> > levels even if it is applied to: (1) global coverage with small
> > target/destination geographic areas, (2) large traffic volumes (large
> > flows), (3) large number of active sources
>=20
> Would this read better?
>=20
> Alex
>=20
>=20
>=20
>=20
> >
> > Best regards, Georgios
> >
> >
> >
> >
> >
> >> -----Original Message----- From: Rex Buddenberg
> >> [mailto:buddenbergr@gmail.com] Sent: dinsdag 14 januari 2014 20:28
> >> To: Karagiannis, G. (EWI) Cc: its@ietf.org;
> >> dimitri.papadimitriou@alcatel.be Subject: Re: [geonet/its] new
> >> descriptions of Geonet problem, challenges, requirements, assumptions
> >> + request for volunteers
> >>
> >> On Tue, 2014-01-14 at 12:22 +0000, karagian@cs.utwente.nl wrote:
> >>> o) SHOULD be able to be scalable and maintain its performance to
> >>> acceptable levels even it is applied to: (1) global coverage with
> >>> small target/destination geographic areas, (2) large traffic volumes
> >>> (large flows), (3) large number of active sources
> >>
> >> s/scaleable/stable
> >>
> >> Reason.  Spectrum is an inelastic resource so you can't just up comms
> >> capacity when sources increase.  What is important is determinism vs
> >> stochasticism.  Because deterministic systems are stable under
> >> overload. At layer 2 we see this in the different MACs.  CSMA (as in
> >> WiFi) is what we used to call 'free net' and crashes under overload.
> >> TDMA MACs like that in 802.16 are what we  used to call 'directed
> >> net' and are stable (and near- deterministic).
> >
> > _______________________________________________ its mailing list
> > its@ietf.org https://www.ietf.org/mailman/listinfo/its
> >
> >
>=20
>=20
> _______________________________________________
> its mailing list
> its@ietf.org
> https://www.ietf.org/mailman/listinfo/its

From alexandru.petrescu@gmail.com  Wed Jan 15 06:24:57 2014
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From: Alexandru Petrescu <alexandru.petrescu@gmail.com>
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Subject: Re: [geonet/its] Comments on draft-petrescu-autoconf-ra-based-routing
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Emmanuel,

Thank you for having read through the document, I am happy.

First, please know that the solution described in this draft (RA-based
IP prefix exchanges for direct Vehicle-to-Vehicle communications) is no
longer a focus for the work here in this list.

The focus now and here is about GeoNet - geographical networking, with
some applicability in vehicular communications, and with wider
applicability at Internet scale.  The token prefixing each email is now
[geonet/its] rather than [its].

That said, see below some comments.

Le 10/01/2014 18:08, Emmanuel Thierry a écrit :
> Hello,
>
> I took a look to the I.D. draft-petrescu-autoconf-ra-based-routing
> and i have some comments and questions about it. I don't know if it
> is the best place to discuss, please redirect me to the appropriate
> list if not !

This kind of things have been discussed here on this list during recent
years.  However, it is no longer the right place.

Other potential places where this could be discussed include the 6MAN
WG, because there is the place where Router Advertisement messages are
discussed.  Or maybe v6ops WG because there is where operational aspects
are discussed, and vehicular communications could be considered as
particular kinds of IPv6 deployments.

> 1/ RA Routing limit: My understanding of this draft is that RAs will
> be "forwarded" across multiple links.

Err, no.  The draft considers exclusively what happens on a single link.
  Like several vehicles being in close vicinity and forming a single IP
subnet; realized with maybe WiFi ad-hoc mode; without IP nor link-layer
forwarding.

This may be an inconvenient of this draft's solution, but that's how we
present it: a single link, single IP subnet between a few vehicles.

> A look to section 4.3 makes me think that, since Route Information
> are stored by the intermediate node (MR2), then resent to the next
> Mobile Router (either MR1 or MR3).

Well, I think it is the fault of the initial figure in that section.  In
that figure MR1, MR2 and MR3 all have their egress interface in the same
subnet, not different subnets.  Even if the figure shows 3 vertical
parallel bars it's to suggest message sequenced in time, but not space.
  A message received by MR2 from MR1 is not propagated to MR3.

We should better picture that.

> However i don't see any limit. It may be a concern if there is a
> undiscontinuing queue of moving objects.

CErtainly there is a problem if we interpret the figure as suggested.
If the routing messages are propagated then there should be limits
somewhere, to control looping, and more.  More than just the Hop Limit
field of the base IPv6 header.

One may imagine new particular fields in the RA to express such limits.
  For example in OLSR there is this concept of 2-hop neighborhood, 2-hop
set.  In our context we try to address this limit concept in another
draft draft-pfister-moving-net-autoconf-00 where 2bits are set aside for
later thinking.

But certainly there should be a way to limit propagation.

> Where this broadcast is supposed to be stopped ? Shouldn't there
> exist a TTL for that ?

Right question.

> 2/ Fixed Scene: The concept of "Fixed Scene" is quite abstract to
> me, i don't understand what it means and how it could be interpreted
> in a protocol standard. At no moment i envision in which Fixed Scene
> i am supposed to be. Could you elaborate on that ?

Yes, thanks for asking.

In a relatively distanced past there was some secrecy involved with
respect to the term "Incident Scene", so a more comfortable term was
invented "Fixed Scene".  But I will revert back to Incident Scene in the
next versions of the draft, if it looks appropriate.

An Incident Scene is an area around a car accident, or fire hazard.  At
this scene several vehicles arrive and stay fixed for a while.  For
example, at a car accident site one could notice the Police car, the
Pompiers car, and sometimes even the GDF car.  They stay there for a
while, and are coordinated by another smaller car.  They need to
communicate among them and with people intervening at the scene.

> 3/ Preference value: You use a preference value of 0x09, so that
> this route is not preferred among others. I think there is a typo and
> it should be 0x03, as stated in RFC 4191.

I think that's right.  It is indeed a typo, at least because one couldnt
fit the value 0x09 in 2 bits.

However, I am not sure it should be 0x03?  Does RFC4191 really says it
should be 0x03?

> 4/ Default router Even if you set the preference value to 0x03 to
> lower the preference of the advertising router, it remains a valid
> router for the receiver of this Router Advertisement. As a
> consequence, if there is no other router available (no road
> infrastructure), the Mobile Router which receives this Router
> Advertisement (or a node that don't understand the newly introduced
> "M" flag) may try to use it as a default router. Moreover, if a
> roadside router chooses to use the same preference value to lower
> its preference compared to other routers (for example a roadside
> router which serves as a backup router), a Mobile Router advertising
> its prefix through Router Advertisements may be preferred among this
>  valid backup router.
>
> It is unclear in section 4.3 if by "preference" and "lifetime", you
> mean the corresponding fields in the RA itself or in the RIO.

Right, good question.

> I assumed you meant in the RA. The RFC 4861 section 4.2 clearly
> states that the proper way to indicate that an advertising router is
> not likely to forward traffic for the default route, is to set Router
> Lifetime to 0. So the Router lifetime shouldn't be used there.

I think you're right.  I think these mobile routers are little likely to
present themselves as default routers, except in some cases. (e.g. in a
V2V2I deployment one would use V2V and V2I in sequence).

I guess yes that we should describe better how the Lifetime (of the RA)
should be used in conjunction with this Prf value.

> A Mobile Router (or roadside router) that wants to advertise specific
> prefixes may want to advertise it independently of whether the node
> is or isn't a router.

Err, if it sends RA then it is a Router, can't otherwise.

> The draft should allow to use these fields normally, i.e. set the
> Router Lifetime to 0 and Router preference to 0x00 if you don't
> forward traffic for ::/0, set the Router Lifetime and Router
> preference to an appropriate value if you forward traffic for ::/0.

Sounds reasonable.

> In order to code lifetime, Mobile Routers should use the lifetime
> field in the RIO, and set the preference field in the RIO to an
> appropriate value, according to whether or not the node considers it
> is the best candidate for reaching the destination.

Sounds reasonable.

We would need to discuss this further.

Alex

>
> Best regards Emmanuel Thierry
>
> _______________________________________________ its mailing list
> its@ietf.org https://www.ietf.org/mailman/listinfo/its
>
>



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From: Rex Buddenberg <buddenbergr@gmail.com>
To: Alexandru Petrescu <alexandru.petrescu@gmail.com>
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Subject: Re: [geonet/its] new descriptions of Geonet problem, challenges, requirements, assumptions + request  for volunteers
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Giorgios, Alex,

For the last forty years, we've managed QoS control by increasingly
overprovisioning the internet.  Today, the terrestrial internet is
largely congestion-free simply because it is so capacious.
     Topology.  WiFi in the internet today is all at the fringe -- it's
used as a LAN interconnecting last router and end systems.
     
But what you're discussing here changes both: above topology changes to
having a radio-WAN in the interior of the network rather than at the
fringe (thus my use of the term radio-WAN rather than LAN).  This means
we have gigabit plumbing on all sides of a megabit (on good days) comms
path.  It will always be the bottleneck and we can't make it arbitrarily
bigger by adding more lambdas like we do with fiber optic.  
     Scaleability implies to me adding more bandwidth and we're simply
not going to be able to do that unless God is on the [its] list and
decides to contribute by making more spectrum.  Stability, on the other
hand, means that we can add more customers (e.g. more automobiles)
without crashing the system.  
      
Since you asked ... this is a reprise of phenomena we've seen before.
'Real time' operating systems (there are still a few out there) do not
have infinite processing power but rather run processes with a time
limit on each so that all pending processes get a chance (again,
overprovisioning, this time in the form of lotsa CPU horsepower, has
subdued the discussion).  The point is stability under overload because
you can't make the overload go away.
     We went through the same discussions with wired LANs about 25 years
ago.  Ethernet has contention MAC which does indeed crash under
overload.  Token rings (including FDDI as well as 802.5) were
deterministic and non-contention and therefore more stable under
overload.  Again, the discussion was submerged by the takeoff in
capacity -- you ceased hearing about it as soon as we left the
neighborhood of 10M ethernet.  

Help?


(Part of the problem I'm dealing with reading all this is that I can't
tell what layer of the model you're at.  Hopefully as the problem
statement matures this will straighten out.  This particular problem has
historically been at layer 2 (contention MACs crash under overload).
Ironically the solution (DS) has been at layer 3.  ... except that we
tend to miss the MAC discussion which often makes the layer 3 issues
moot.



On Wed, 2014-01-15 at 13:46 +0100, Alexandru Petrescu wrote:
> Le 15/01/2014 09:02, karagian@cs.utwente.nl a İcrit :
> > Hi Rex,
> >
> > Thanks for the comment, however, I have a question regarding your
> > proposed text for the stability requirement:
> >
> >> s/scaleable/stable 


> Reason.  Spectrum is an inelastic resource so
> >> you can't just up comms capacity when sources increase.  What is
> >> important is determinism vs stochasticism.  Because deterministic
> >> systems are stable under overload. At layer 2 we see this in the
> >> different MACs.  CSMA (as in WiFi) is what we used to call 'free
> >> net' and crashes under overload.  TDMA MACs like that in 802.16 are
> >> what we used to call 'directed net' and are stable (and near-
> >> deterministic).
> >
> > How does this requirement fits to the work that IETF needs to do?
> > Please provide the requirement that the Geonet solution will need to
> >  support?
> 
> Sorry for interfering in your exchange, but I believe his remark - to
> which I agree separately - is about this GeoNet requirement:
> 
> > The specified mechanisms and protocol solutions:
> [...]
> > o) SHOULD be able to be scalable and maintain its performance to
> > acceptable levels even it is applied to: (1) global coverage with
> > small target/destination geographic areas, (2) large traffic volumes
> >  (large flows), (3) large number of active sources
> 
> To accommodate his remark maybe we could rather say:
> 
> > SHOULD be able to scale, leverage on stable and deterministic
> > underlayers when available, and maintain its performance to
> > acceptable levels even if it is applied to: (1) global coverage with
> > small target/destination geographic areas, (2) large traffic volumes
> > (large flows), (3) large number of active sources
> 
> Would this read better?
> 
> Alex
> 
> 
> 
> 
> >
> > Best regards, Georgios
> >
> >
> >
> >
> >
> >> -----Original Message----- From: Rex Buddenberg
> >> [mailto:buddenbergr@gmail.com] Sent: dinsdag 14 januari 2014 20:28
> >> To: Karagiannis, G. (EWI) Cc: its@ietf.org;
> >> dimitri.papadimitriou@alcatel.be Subject: Re: [geonet/its] new
> >> descriptions of Geonet problem, challenges, requirements,
> >> assumptions + request for volunteers
> >>
> >> On Tue, 2014-01-14 at 12:22 +0000, karagian@cs.utwente.nl wrote:
> >>> o) SHOULD be able to be scalable and maintain its performance to
> >>> acceptable levels even it is applied to: (1) global coverage with
> >>> small target/destination geographic areas, (2) large traffic
> >>> volumes (large flows), (3) large number of active sources
> >>
> >> s/scaleable/stable
> >>
> >> Reason.  Spectrum is an inelastic resource so you can't just up
> >> comms capacity when sources increase.  What is important is
> >> determinism vs stochasticism.  Because deterministic systems are
> >> stable under overload. At layer 2 we see this in the different
> >> MACs.  CSMA (as in WiFi) is what we used to call 'free net' and
> >> crashes under overload.  TDMA MACs like that in 802.16 are what we
> >>  used to call 'directed net' and are stable (and near-
> >> deterministic).
> >
> > _______________________________________________ its mailing list
> > its@ietf.org https://www.ietf.org/mailman/listinfo/its
> >
> >
> 
> 
> _______________________________________________
> its mailing list
> its@ietf.org
> https://www.ietf.org/mailman/listinfo/its



From bastiaan.wissingh@tno.nl  Thu Jan 16 09:01:36 2014
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From: "Wissingh, B.F. (Bastiaan)" <bastiaan.wissingh@tno.nl>
To: Alexandru Petrescu <alexandru.petrescu@gmail.com>
Thread-Topic: [geonet/its] Mobile RSU and Multihop with Offload use-case text for a 2nd BoF geonet
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Cc: Georgios Karagiannis <karagian@cs.utwente.nl>, Melinda Shore <melinda.shore@gmail.com>, Alison Chaiken <alison@she-devel.com>, "its@ietf.org" <its@ietf.org>
Subject: [geonet/its] Mobile RSU and Multihop with Offload use-case text for a 2nd BoF geonet
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Hi Alexandru, All,

On request of Alexandru, I=B9ve written two brief paragraphs related to use
cases 'Mobile Roadside Unit' and Multihop with offloading.

The Mobile RSU use case:
In the more regular case a Roadside Unit is placed somewhere alongside a
road and gets a static geographical location which will most likely not be
changed until the device either reaches it's end of life or is no longer
needed at that location and therefor "teared down" (other cases may
apply). A so called 'Mobile Roadside Unit=B9 on the other hand is portable,
meaning that among other settings, it=B9s geographical position adjusts
according to the location it is positioned. Such a 'Mobile Roadside Unit=B9
is very usable in multiple situations, for example when a permanently
installed unit fails and needs a temporarily backup unit or during Road
Works. In that case when at some location among a highway there is some
ongoing Road Works, a surface man could take a 'Mobile Roadside Unit',
position it on his car somewhere at the Road Works and start sending Road
Works Warning messages with information about the Road Works. In some
cases the geographical position of the could change when the Road Works
are moving slowly.

The other use case I was referring to is related to Multihop with
offloading:
When on a certain highway (equipped with Roadside Units) a multihop
message is send out, this message wil be forwarded by all Roadside Units
until it reaches its destination. This consumes resources on all Roadside
Units along the way. A more efficient way of reaching it=B9s destination
would be by offloading the message to the Internet in order for it to be
delivered to Roadside Unit nearest to the destination of the Multihop
message. This saves resources in the Roadside Units along the highway.

Please feel free to add any comments/questions.

Regards,
Bastiaan Wissingh

Op 15-01-14 15:38 schreef Alexandru Petrescu
<alexandru.petrescu@gmail.com>:

>Hello Bastiaan,
>
>Would you be interested in writing a brief paragraph about the 'mobile
>RSU' use-case?  This would be for drafting a Charter proposal for this
>Friday January 17th, to maybe make a BoF request.
>
>Our ongoing description is pasted at the end of this email.
>
>We would need something like this:
>
>Mobile RSU use-case
>-------------------
>Contrary to the typical RSU deployments where RSUs are fixed along the
>road,
>
>(reference:
>http://www.ietf.org/mail-archive/web/its/current/msg00696.html)
>
>Thanks in advance,
>
>Alex
>
>>
>>
>> Hi all,
>>
>> I have used the discussions that we have had up to now and updated the
>>"Geonet" problem statement, challenges, requirements and assumptions.
>>
>> Please note that we need to have a new version of the problem statement
>>draft ready before the 17th of January!
>> Alex, Melinda is this right?
>>
>> For this purpose, I have used the discussions that the following people
>>have had in the geonet/its mailing list:
>> Alexandru Peterscu, Melinda Shore, Dino Farinacci, Brian Dickson,
>>Dimitri Papadimitriou, Carl Reed, , Rex Buddenberg, Alison Chaiken,
>>Georgios Karagiannis.
>>
>> Please note that we need volunteers to complete some issues associated
>>with the description of use cases and with the differences between
>>Geonet and other IETF working groups:
>> (1)   ecrit, (2) LISP and (3) geopriv. Need volunteers for this!
>> Regarding the use cases I have assigned some volunteers (I hope that
>>this is acceptable):
>>
>> o) Dissemination to a particular area:
>> Volunteer: Georgios (old use cases that were described in v.01 of the
>>problem statement draft, rewritten in few paragraphs)
>>
>> o) Goods Tracking
>> Volunteer: Dino Farinacci?
>>
>> o) Traffic Safety and Traffic Efficiency and Traffic Management
>> Volunteer: Georgios
>>
>> o) Mobile RSU
>> Volunteer: Brian Dickson?
>>
>> o) Identification of originating area (network operator, CDN)
>> Volunteer: needed?
>>
>>
>> Below you can find all these descriptions:
>>
>> Geonet Problem:
>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>>
>> Mechanisms and IETF Standardized  protocol(s) is/are needed to allow
>>source  nodes anywhere in the Internet to disseminate packets to all/any
>>node(s) using geographical area information, such as (1) geo-locators
>>(names) and/or (2) geographic (physical) coordinates, within a specified
>> target geographic area.
>>
>>
>> Geonet Challenges/Open issues:
>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>>
>> o) Mechanisms and/or protocol network layer solutions are needed for
>>the accurate representation of geographic areas using (1) geo-locators
>>(names) and/or (2) geographic (physical) coordinates.
>>
>> o) Mechanisms and/or protocol network layer solutions are needed to
>>ensure that geographical area information (geo-locators (names) and/or
>>geographic (physical) coordinates) is accurately mapped to an IP
>>locator, e.g., an IP address. Mapping data bases can be maintained at
>>the source nodes, IP locator nodes, or intermediate nodes (e.g., edge
>>nodes).
>>
>> o) Mechanisms and/or protocol network layer solutions are needed to
>>ensure that an IP locator, e.g., an IP address can be accurately mapped
>>to a geographic area information (geo-locators (names) and/or geographic
>>(physical) coordinates). Mapping data bases can be maintained at the
>>source nodes, IP locator nodes, or intermediate nodes (e.g., edge nodes).
>>
>> o) Mechanisms and protocol network layer solutions are needed to ensure
>>that data packets generated by source nodes placed anywhere in the
>>Internet can be forwarded over multiple hops by using, where possible,
>>geographic physical coordinates of (1) the destination node(s) and/or
>>(2) the intermediate nodes for the routing decisions, instead of using
>>their IP addresses.
>> (Note that in order to solve the above challenge it is NOT mandated
>>that all nodes located on the path from source to destination nodes are
>>able to forward packets using the  geo-coordinates of (1) the
>>destination node(s) and/or (2) the intermediate nodes for the routing
>>decisions. This is emphasized by using the words "where possible".)
>>
>>
>> Geonet Requirements
>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>>
>> The specified mechanisms and protocol solutions:
>> o) SHOULD ideally support IPv4 and IPv6
>> o) MUST at a minimum support IPv6
>> o) MUST be able to use and insert geographic area information at the
>>network layer.
>> o) MUST be able to disseminate the information from senders to the
>>destination nodes located in the target/destination geographic area in a
>>point to multipoint manner.
>> o) SHOULD be able to be scalable and maintain its performance to
>>acceptable levels even it is applied to: (1) global coverage with small
>>target/destination geographic areas, (2) large traffic volumes (large
>>flows), (3) large number of active sources
>> o) MUST be able to provide accurate representation of geographic areas
>>using (1) geo-locators (names) and/or (2) geographic (physical)
>>coordinates.
>> o) MUST be able to ensure that geographical area information
>>(geo-locators (names) and/or geographic (physical) coordinates) is
>>accurately mapped to an IP locator, e.g., an IP address, even if the
>>relation between geographical area information and IP locator is not a
>>one-to-one relationship.
>> o) MUST be able to ensure that an IP locator, e.g., an IP address can
>>be accurately mapped to a geographic area information (geo-locators
>>(names) and/or geographic (physical) coordinates), even if the relation
>>between locator and geographical information is not a one-to-one
>>relationship.
>> o) MUST be able to ensure that the used mapping data bases of IP
>>locators to a geographic area information are up to date.
>> o) MUST support security and privacy: Given the sensitivity of location
>>data and the possibility of the technology being used in emergency
>>and/or road traffic management scenarios we will pay particular
>>attention to security and privacy.  A thorough threat analysis will be
>>conducted, and mitigations specified in any protocol documents which are
>>developed objectives for all supported communication modes. Security
>>objectives particularly include integrity, privacy and non-repudiation
>>and SHOULD protect the network and transport layer protocol headers.  In
>>addition the Internet-wide geo-networking solution MUST also protect
>>privacy, i.e. provide confidentiality to personal data such as relation
>>between node identifier and location.
>> o) SHOULD support timely and guaranteed delivery of information.
>>
>>
>> Geonet Assumptions:
>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>> o) The mechanisms and protocol solutions SHOULD be able to use and
>>insert geographic area information at the network layer.
>> o) The destination nodes can be any static or moving entities, such as
>>hosts, vehicles, sensors and actuators, goods, that are spread/located
>>in a certain target/destination geographic area.
>> o) existing IETF mechanism and protocols like LISP, geopriv, ecrit and
>>reverse 911 will be taken into consideration during the design phase
>> o) The ISO 19107: Spatial Schema will be considered for the
>>representation of spatial characteristics of geographic features
>>(including geometries), and a set of spatial operations consistent with
>>these schemas. ISO 19107 treats vector geometry and topology up to three
>>dimensions.. Geometries range from point, multipoint, to polygon, to
>>Bezier curves, to Clothoids.
>> o) The IEEE 1609.2, see below, will be considered  for security and
>>privacy support =

>>(https://standards.ieee.org/findstds/standard/1609.2-2013.html
>>
>>
>>
>>
>> Geonet Use Cases (no particular order)
>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D
>> Please one paragraph per use case should be provided
>>
>> o) Dissemination to a particular area:
>> Volunteer: Georgios (old use cases that were described in v.01 of the
>>problem statement draft, rewritten in few paragraphs)
>>
>> o) Goods Tracking
>> Volunteer: Dino Farinacci?
>>
>> o) Traffic Safety and Traffic Efficiency and Traffic Management
>> Volunteer: Georgios
>>
>> o) Mobile RSU
>> Volunteer:
>>
>> o) Identification of originating area (network operator, CDN)
>> Volunteer: needed?
>>
>> Differences between Geonet and othet IETF working groups:
>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>> Text need to be written that emphasizes that are the main differences
>>between Geonet and at least (1) ecrit, (2) LISP and (3) geopriv. Need
>>volunteers for this!
>>
>>
>> Best regards,
>> Georgios
>>
>>
>> _______________________________________________
>> its mailing list
>> its@ietf.org
>> https://www.ietf.org/mailman/listinfo/its
>>
>>
>




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From karagian@cs.utwente.nl  Thu Jan 16 09:09:52 2014
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From: <karagian@cs.utwente.nl>
To: <bastiaan.wissingh@tno.nl>, <alexandru.petrescu@gmail.com>
Thread-Topic: [geonet/its] Mobile RSU and Multihop with Offload use-case text for a 2nd BoF geonet
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Subject: Re: [geonet/its] Mobile RSU and Multihop with Offload use-case text for a 2nd BoF geonet
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Hi Bastiaan,



Thank you for sending us the descriptions of these two use cases.



The decription of the mobile RSU use case includes geographical information=
 in its description. I assume that a sender on the Internet can reach the m=
obile RSU using its geographical coordinates.

However, the dscription of the offloading use case does not include any des=
cription of how the geographic inforamtion can be used to locate nodes, etc=
.

Can you inlcude this information in the offloading use case?



Best regards,

Georgios





________________________________
Van: Wissingh, B.F. (Bastiaan) [bastiaan.wissingh@tno.nl]
Verzonden: donderdag 16 januari 2014 18:01
To: Alexandru Petrescu
Cc: Karagiannis, G. (EWI); Melinda Shore; Alison Chaiken; its@ietf.org
Onderwerp: [geonet/its] Mobile RSU and Multihop with Offload use-case text =
for a 2nd BoF geonet

Hi Alexandru, All,

On request of Alexandru, I=B9ve written two brief paragraphs related to use
cases 'Mobile Roadside Unit' and Multihop with offloading.

The Mobile RSU use case:
In the more regular case a Roadside Unit is placed somewhere alongside a
road and gets a static geographical location which will most likely not be
changed until the device either reaches it's end of life or is no longer
needed at that location and therefor "teared down" (other cases may
apply). A so called 'Mobile Roadside Unit=B9 on the other hand is portable,
meaning that among other settings, it=B9s geographical position adjusts
according to the location it is positioned. Such a 'Mobile Roadside Unit=B9
is very usable in multiple situations, for example when a permanently
installed unit fails and needs a temporarily backup unit or during Road
Works. In that case when at some location among a highway there is some
ongoing Road Works, a surface man could take a 'Mobile Roadside Unit',
position it on his car somewhere at the Road Works and start sending Road
Works Warning messages with information about the Road Works. In some
cases the geographical position of the could change when the Road Works
are moving slowly.

The other use case I was referring to is related to Multihop with
offloading:
When on a certain highway (equipped with Roadside Units) a multihop
message is send out, this message wil be forwarded by all Roadside Units
until it reaches its destination. This consumes resources on all Roadside
Units along the way. A more efficient way of reaching it=B9s destination
would be by offloading the message to the Internet in order for it to be
delivered to Roadside Unit nearest to the destination of the Multihop
message. This saves resources in the Roadside Units along the highway.

Please feel free to add any comments/questions.

Regards,
Bastiaan Wissingh

Op 15-01-14 15:38 schreef Alexandru Petrescu
<alexandru.petrescu@gmail.com>:

>Hello Bastiaan,
>
>Would you be interested in writing a brief paragraph about the 'mobile
>RSU' use-case?  This would be for drafting a Charter proposal for this
>Friday January 17th, to maybe make a BoF request.
>
>Our ongoing description is pasted at the end of this email.
>
>We would need something like this:
>
>Mobile RSU use-case
>-------------------
>Contrary to the typical RSU deployments where RSUs are fixed along the
>road,
>
>(reference:
>http://www.ietf.org/mail-archive/web/its/current/msg00696.html)
>
>Thanks in advance,
>
>Alex
>
>>
>>
>> Hi all,
>>
>> I have used the discussions that we have had up to now and updated the
>>"Geonet" problem statement, challenges, requirements and assumptions.
>>
>> Please note that we need to have a new version of the problem statement
>>draft ready before the 17th of January!
>> Alex, Melinda is this right?
>>
>> For this purpose, I have used the discussions that the following people
>>have had in the geonet/its mailing list:
>> Alexandru Peterscu, Melinda Shore, Dino Farinacci, Brian Dickson,
>>Dimitri Papadimitriou, Carl Reed, , Rex Buddenberg, Alison Chaiken,
>>Georgios Karagiannis.
>>
>> Please note that we need volunteers to complete some issues associated
>>with the description of use cases and with the differences between
>>Geonet and other IETF working groups:
>> (1)   ecrit, (2) LISP and (3) geopriv. Need volunteers for this!
>> Regarding the use cases I have assigned some volunteers (I hope that
>>this is acceptable):
>>
>> o) Dissemination to a particular area:
>> Volunteer: Georgios (old use cases that were described in v.01 of the
>>problem statement draft, rewritten in few paragraphs)
>>
>> o) Goods Tracking
>> Volunteer: Dino Farinacci?
>>
>> o) Traffic Safety and Traffic Efficiency and Traffic Management
>> Volunteer: Georgios
>>
>> o) Mobile RSU
>> Volunteer: Brian Dickson?
>>
>> o) Identification of originating area (network operator, CDN)
>> Volunteer: needed?
>>
>>
>> Below you can find all these descriptions:
>>
>> Geonet Problem:
>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>>
>> Mechanisms and IETF Standardized  protocol(s) is/are needed to allow
>>source  nodes anywhere in the Internet to disseminate packets to all/any
>>node(s) using geographical area information, such as (1) geo-locators
>>(names) and/or (2) geographic (physical) coordinates, within a specified
>> target geographic area.
>>
>>
>> Geonet Challenges/Open issues:
>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>>
>> o) Mechanisms and/or protocol network layer solutions are needed for
>>the accurate representation of geographic areas using (1) geo-locators
>>(names) and/or (2) geographic (physical) coordinates.
>>
>> o) Mechanisms and/or protocol network layer solutions are needed to
>>ensure that geographical area information (geo-locators (names) and/or
>>geographic (physical) coordinates) is accurately mapped to an IP
>>locator, e.g., an IP address. Mapping data bases can be maintained at
>>the source nodes, IP locator nodes, or intermediate nodes (e.g., edge
>>nodes).
>>
>> o) Mechanisms and/or protocol network layer solutions are needed to
>>ensure that an IP locator, e.g., an IP address can be accurately mapped
>>to a geographic area information (geo-locators (names) and/or geographic
>>(physical) coordinates). Mapping data bases can be maintained at the
>>source nodes, IP locator nodes, or intermediate nodes (e.g., edge nodes).
>>
>> o) Mechanisms and protocol network layer solutions are needed to ensure
>>that data packets generated by source nodes placed anywhere in the
>>Internet can be forwarded over multiple hops by using, where possible,
>>geographic physical coordinates of (1) the destination node(s) and/or
>>(2) the intermediate nodes for the routing decisions, instead of using
>>their IP addresses.
>> (Note that in order to solve the above challenge it is NOT mandated
>>that all nodes located on the path from source to destination nodes are
>>able to forward packets using the  geo-coordinates of (1) the
>>destination node(s) and/or (2) the intermediate nodes for the routing
>>decisions. This is emphasized by using the words "where possible".)
>>
>>
>> Geonet Requirements
>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>>
>> The specified mechanisms and protocol solutions:
>> o) SHOULD ideally support IPv4 and IPv6
>> o) MUST at a minimum support IPv6
>> o) MUST be able to use and insert geographic area information at the
>>network layer.
>> o) MUST be able to disseminate the information from senders to the
>>destination nodes located in the target/destination geographic area in a
>>point to multipoint manner.
>> o) SHOULD be able to be scalable and maintain its performance to
>>acceptable levels even it is applied to: (1) global coverage with small
>>target/destination geographic areas, (2) large traffic volumes (large
>>flows), (3) large number of active sources
>> o) MUST be able to provide accurate representation of geographic areas
>>using (1) geo-locators (names) and/or (2) geographic (physical)
>>coordinates.
>> o) MUST be able to ensure that geographical area information
>>(geo-locators (names) and/or geographic (physical) coordinates) is
>>accurately mapped to an IP locator, e.g., an IP address, even if the
>>relation between geographical area information and IP locator is not a
>>one-to-one relationship.
>> o) MUST be able to ensure that an IP locator, e.g., an IP address can
>>be accurately mapped to a geographic area information (geo-locators
>>(names) and/or geographic (physical) coordinates), even if the relation
>>between locator and geographical information is not a one-to-one
>>relationship.
>> o) MUST be able to ensure that the used mapping data bases of IP
>>locators to a geographic area information are up to date.
>> o) MUST support security and privacy: Given the sensitivity of location
>>data and the possibility of the technology being used in emergency
>>and/or road traffic management scenarios we will pay particular
>>attention to security and privacy.  A thorough threat analysis will be
>>conducted, and mitigations specified in any protocol documents which are
>>developed objectives for all supported communication modes. Security
>>objectives particularly include integrity, privacy and non-repudiation
>>and SHOULD protect the network and transport layer protocol headers.  In
>>addition the Internet-wide geo-networking solution MUST also protect
>>privacy, i.e. provide confidentiality to personal data such as relation
>>between node identifier and location.
>> o) SHOULD support timely and guaranteed delivery of information.
>>
>>
>> Geonet Assumptions:
>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>> o) The mechanisms and protocol solutions SHOULD be able to use and
>>insert geographic area information at the network layer.
>> o) The destination nodes can be any static or moving entities, such as
>>hosts, vehicles, sensors and actuators, goods, that are spread/located
>>in a certain target/destination geographic area.
>> o) existing IETF mechanism and protocols like LISP, geopriv, ecrit and
>>reverse 911 will be taken into consideration during the design phase
>> o) The ISO 19107: Spatial Schema will be considered for the
>>representation of spatial characteristics of geographic features
>>(including geometries), and a set of spatial operations consistent with
>>these schemas. ISO 19107 treats vector geometry and topology up to three
>>dimensions.. Geometries range from point, multipoint, to polygon, to
>>Bezier curves, to Clothoids.
>> o) The IEEE 1609.2, see below, will be considered  for security and
>>privacy support
>>(<about:blank>https://standards.ieee.org/findstds/standard/1609.2-2013.ht=
ml
>>
>>
>>
>>
>> Geonet Use Cases (no particular order)
>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D
>> Please one paragraph per use case should be provided
>>
>> o) Dissemination to a particular area:
>> Volunteer: Georgios (old use cases that were described in v.01 of the
>>problem statement draft, rewritten in few paragraphs)
>>
>> o) Goods Tracking
>> Volunteer: Dino Farinacci?
>>
>> o) Traffic Safety and Traffic Efficiency and Traffic Management
>> Volunteer: Georgios
>>
>> o) Mobile RSU
>> Volunteer:
>>
>> o) Identification of originating area (network operator, CDN)
>> Volunteer: needed?
>>
>> Differences between Geonet and othet IETF working groups:
>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>> Text need to be written that emphasizes that are the main differences
>>between Geonet and at least (1) ecrit, (2) LISP and (3) geopriv. Need
>>volunteers for this!
>>
>>
>> Best regards,
>> Georgios
>>
>>
>> _______________________________________________
>> its mailing list
>> its@ietf.org
>> https://www.ietf.org/mailman/listinfo/its
>>
>>
>




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E: 10pt">
<p>Hi Bastiaan,</p>
<p>&nbsp;</p>
<p>Thank you for sending us the descriptions of these two use cases.</p>
<p>&nbsp;</p>
<p>The decription of the mobile RSU&nbsp;use case&nbsp;includes geographica=
l information in its description. I assume that a sender on the Internet ca=
n reach the mobile RSU using its geographical coordinates.</p>
<p>However, the dscription of the offloading use case does not include any =
description of how the geographic inforamtion can be used to locate nodes, =
etc.
</p>
<p>Can you inlcude this information in the offloading use case?</p>
<p>&nbsp;</p>
<p>Best regards,</p>
<p>Georgios</p>
<p>&nbsp;</p>
<p>&nbsp;</p>
<div>
<hr tabindex=3D"-1">
<div id=3D"x_divRplyFwdMsg"><font color=3D"#000000" size=3D"2" face=3D"Taho=
ma"><b>Van:</b> Wissingh, B.F. (Bastiaan) [bastiaan.wissingh@tno.nl]<br>
<b>Verzonden:</b> donderdag 16 januari 2014 18:01<br>
<b>To:</b> Alexandru Petrescu<br>
<b>Cc:</b> Karagiannis, G. (EWI); Melinda Shore; Alison Chaiken; its@ietf.o=
rg<br>
<b>Onderwerp:</b> [geonet/its] Mobile RSU and Multihop with Offload use-cas=
e text for a 2nd BoF geonet<br>
</font><br>
</div>
<div></div>
</div>
<font size=3D"2"><span style=3D"FONT-SIZE: 10pt">
<div class=3D"PlainText">Hi Alexandru, All,<br>
<br>
On request of Alexandru, I=B9ve written two brief paragraphs related to use=
<br>
cases 'Mobile Roadside Unit' and Multihop with offloading.<br>
<br>
The Mobile RSU use case:<br>
In the more regular case a Roadside Unit is placed somewhere alongside a<br=
>
road and gets a static geographical location which will most likely not be<=
br>
changed until the device either reaches it's end of life or is no longer<br=
>
needed at that location and therefor &quot;teared down&quot; (other cases m=
ay<br>
apply). A so called 'Mobile Roadside Unit=B9 on the other hand is portable,=
<br>
meaning that among other settings, it=B9s geographical position adjusts<br>
according to the location it is positioned. Such a 'Mobile Roadside Unit=B9=
<br>
is very usable in multiple situations, for example when a permanently<br>
installed unit fails and needs a temporarily backup unit or during Road<br>
Works. In that case when at some location among a highway there is some<br>
ongoing Road Works, a surface man could take a 'Mobile Roadside Unit',<br>
position it on his car somewhere at the Road Works and start sending Road<b=
r>
Works Warning messages with information about the Road Works. In some<br>
cases the geographical position of the could change when the Road Works<br>
are moving slowly.<br>
<br>
The other use case I was referring to is related to Multihop with<br>
offloading:<br>
When on a certain highway (equipped with Roadside Units) a multihop<br>
message is send out, this message wil be forwarded by all Roadside Units<br=
>
until it reaches its destination. This consumes resources on all Roadside<b=
r>
Units along the way. A more efficient way of reaching it=B9s destination<br=
>
would be by offloading the message to the Internet in order for it to be<br=
>
delivered to Roadside Unit nearest to the destination of the Multihop<br>
message. This saves resources in the Roadside Units along the highway.<br>
<br>
Please feel free to add any comments/questions.<br>
<br>
Regards,<br>
Bastiaan Wissingh<br>
<br>
Op 15-01-14 15:38 schreef Alexandru Petrescu<br>
&lt;alexandru.petrescu@gmail.com&gt;:<br>
<br>
&gt;Hello Bastiaan,<br>
&gt;<br>
&gt;Would you be interested in writing a brief paragraph about the 'mobile<=
br>
&gt;RSU' use-case?&nbsp; This would be for drafting a Charter proposal for =
this<br>
&gt;Friday January 17th, to maybe make a BoF request.<br>
&gt;<br>
&gt;Our ongoing description is pasted at the end of this email.<br>
&gt;<br>
&gt;We would need something like this:<br>
&gt;<br>
&gt;Mobile RSU use-case<br>
&gt;-------------------<br>
&gt;Contrary to the typical RSU deployments where RSUs are fixed along the<=
br>
&gt;road,<br>
&gt;<br>
&gt;(reference:<br>
&gt;<a href=3D"http://www.ietf.org/mail-archive/web/its/current/msg00696.ht=
ml" target=3D"_blank">http://www.ietf.org/mail-archive/web/its/current/msg0=
0696.html</a>)<br>
&gt;<br>
&gt;Thanks in advance,<br>
&gt;<br>
&gt;Alex<br>
&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; Hi all,<br>
&gt;&gt;<br>
&gt;&gt; I have used the discussions that we have had up to now and updated=
 the<br>
&gt;&gt;&quot;Geonet&quot; problem statement, challenges, requirements and =
assumptions.<br>
&gt;&gt;<br>
&gt;&gt; Please note that we need to have a new version of the problem stat=
ement<br>
&gt;&gt;draft ready before the 17th of January!<br>
&gt;&gt; Alex, Melinda is this right?<br>
&gt;&gt;<br>
&gt;&gt; For this purpose, I have used the discussions that the following p=
eople<br>
&gt;&gt;have had in the geonet/its mailing list:<br>
&gt;&gt; Alexandru Peterscu, Melinda Shore, Dino Farinacci, Brian Dickson,<=
br>
&gt;&gt;Dimitri Papadimitriou, Carl Reed, , Rex Buddenberg, Alison Chaiken,=
<br>
&gt;&gt;Georgios Karagiannis.<br>
&gt;&gt;<br>
&gt;&gt; Please note that we need volunteers to complete some issues associ=
ated<br>
&gt;&gt;with the description of use cases and with the differences between<=
br>
&gt;&gt;Geonet and other IETF working groups:<br>
&gt;&gt; (1)&nbsp;&nbsp; ecrit, (2) LISP and (3) geopriv. Need volunteers f=
or this!<br>
&gt;&gt; Regarding the use cases I have assigned some volunteers (I hope th=
at<br>
&gt;&gt;this is acceptable):<br>
&gt;&gt;<br>
&gt;&gt; o) Dissemination to a particular area:<br>
&gt;&gt; Volunteer: Georgios (old use cases that were described in v.01 of =
the<br>
&gt;&gt;problem statement draft, rewritten in few paragraphs)<br>
&gt;&gt;<br>
&gt;&gt; o) Goods Tracking<br>
&gt;&gt; Volunteer: Dino Farinacci?<br>
&gt;&gt;<br>
&gt;&gt; o) Traffic Safety and Traffic Efficiency and Traffic Management<br=
>
&gt;&gt; Volunteer: Georgios<br>
&gt;&gt;<br>
&gt;&gt; o) Mobile RSU<br>
&gt;&gt; Volunteer: Brian Dickson?<br>
&gt;&gt;<br>
&gt;&gt; o) Identification of originating area (network operator, CDN)<br>
&gt;&gt; Volunteer: needed?<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; Below you can find all these descriptions:<br>
&gt;&gt;<br>
&gt;&gt; Geonet Problem:<br>
&gt;&gt; =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D<br>
&gt;&gt;<br>
&gt;&gt; Mechanisms and IETF Standardized&nbsp; protocol(s) is/are needed t=
o allow<br>
&gt;&gt;source&nbsp; nodes anywhere in the Internet to disseminate packets =
to all/any<br>
&gt;&gt;node(s) using geographical area information, such as (1) geo-locato=
rs<br>
&gt;&gt;(names) and/or (2) geographic (physical) coordinates, within a spec=
ified<br>
&gt;&gt; target geographic area.<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; Geonet Challenges/Open issues:<br>
&gt;&gt; =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D<br>
&gt;&gt;<br>
&gt;&gt; o) Mechanisms and/or protocol network layer solutions are needed f=
or<br>
&gt;&gt;the accurate representation of geographic areas using (1) geo-locat=
ors<br>
&gt;&gt;(names) and/or (2) geographic (physical) coordinates.<br>
&gt;&gt;<br>
&gt;&gt; o) Mechanisms and/or protocol network layer solutions are needed t=
o<br>
&gt;&gt;ensure that geographical area information (geo-locators (names) and=
/or<br>
&gt;&gt;geographic (physical) coordinates) is accurately mapped to an IP<br=
>
&gt;&gt;locator, e.g., an IP address. Mapping data bases can be maintained =
at<br>
&gt;&gt;the source nodes, IP locator nodes, or intermediate nodes (e.g., ed=
ge<br>
&gt;&gt;nodes).<br>
&gt;&gt;<br>
&gt;&gt; o) Mechanisms and/or protocol network layer solutions are needed t=
o<br>
&gt;&gt;ensure that an IP locator, e.g., an IP address can be accurately ma=
pped<br>
&gt;&gt;to a geographic area information (geo-locators (names) and/or geogr=
aphic<br>
&gt;&gt;(physical) coordinates). Mapping data bases can be maintained at th=
e<br>
&gt;&gt;source nodes, IP locator nodes, or intermediate nodes (e.g., edge n=
odes).<br>
&gt;&gt;<br>
&gt;&gt; o) Mechanisms and protocol network layer solutions are needed to e=
nsure<br>
&gt;&gt;that data packets generated by source nodes placed anywhere in the<=
br>
&gt;&gt;Internet can be forwarded over multiple hops by using, where possib=
le,<br>
&gt;&gt;geographic physical coordinates of (1) the destination node(s) and/=
or<br>
&gt;&gt;(2) the intermediate nodes for the routing decisions, instead of us=
ing<br>
&gt;&gt;their IP addresses.<br>
&gt;&gt; (Note that in order to solve the above challenge it is NOT mandate=
d<br>
&gt;&gt;that all nodes located on the path from source to destination nodes=
 are<br>
&gt;&gt;able to forward packets using the&nbsp; geo-coordinates of (1) the<=
br>
&gt;&gt;destination node(s) and/or (2) the intermediate nodes for the routi=
ng<br>
&gt;&gt;decisions. This is emphasized by using the words &quot;where possib=
le&quot;.)<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; Geonet Requirements<br>
&gt;&gt; =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D<br>
&gt;&gt;<br>
&gt;&gt; The specified mechanisms and protocol solutions:<br>
&gt;&gt; o) SHOULD ideally support IPv4 and IPv6<br>
&gt;&gt; o) MUST at a minimum support IPv6<br>
&gt;&gt; o) MUST be able to use and insert geographic area information at t=
he<br>
&gt;&gt;network layer.<br>
&gt;&gt; o) MUST be able to disseminate the information from senders to the=
<br>
&gt;&gt;destination nodes located in the target/destination geographic area=
 in a<br>
&gt;&gt;point to multipoint manner.<br>
&gt;&gt; o) SHOULD be able to be scalable and maintain its performance to<b=
r>
&gt;&gt;acceptable levels even it is applied to: (1) global coverage with s=
mall<br>
&gt;&gt;target/destination geographic areas, (2) large traffic volumes (lar=
ge<br>
&gt;&gt;flows), (3) large number of active sources<br>
&gt;&gt; o) MUST be able to provide accurate representation of geographic a=
reas<br>
&gt;&gt;using (1) geo-locators (names) and/or (2) geographic (physical)<br>
&gt;&gt;coordinates.<br>
&gt;&gt; o) MUST be able to ensure that geographical area information<br>
&gt;&gt;(geo-locators (names) and/or geographic (physical) coordinates) is<=
br>
&gt;&gt;accurately mapped to an IP locator, e.g., an IP address, even if th=
e<br>
&gt;&gt;relation between geographical area information and IP locator is no=
t a<br>
&gt;&gt;one-to-one relationship.<br>
&gt;&gt; o) MUST be able to ensure that an IP locator, e.g., an IP address =
can<br>
&gt;&gt;be accurately mapped to a geographic area information (geo-locators=
<br>
&gt;&gt;(names) and/or geographic (physical) coordinates), even if the rela=
tion<br>
&gt;&gt;between locator and geographical information is not a one-to-one<br=
>
&gt;&gt;relationship.<br>
&gt;&gt; o) MUST be able to ensure that the used mapping data bases of IP<b=
r>
&gt;&gt;locators to a geographic area information are up to date.<br>
&gt;&gt; o) MUST support security and privacy: Given the sensitivity of loc=
ation<br>
&gt;&gt;data and the possibility of the technology being used in emergency<=
br>
&gt;&gt;and/or road traffic management scenarios we will pay particular<br>
&gt;&gt;attention to security and privacy.&nbsp; A thorough threat analysis=
 will be<br>
&gt;&gt;conducted, and mitigations specified in any protocol documents whic=
h are<br>
&gt;&gt;developed objectives for all supported communication modes. Securit=
y<br>
&gt;&gt;objectives particularly include integrity, privacy and non-repudiat=
ion<br>
&gt;&gt;and SHOULD protect the network and transport layer protocol headers=
.&nbsp; In<br>
&gt;&gt;addition the Internet-wide geo-networking solution MUST also protec=
t<br>
&gt;&gt;privacy, i.e. provide confidentiality to personal data such as rela=
tion<br>
&gt;&gt;between node identifier and location.<br>
&gt;&gt; o) SHOULD support timely and guaranteed delivery of information.<b=
r>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; Geonet Assumptions:<br>
&gt;&gt; =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D<br>
&gt;&gt; o) The mechanisms and protocol solutions SHOULD be able to use and=
<br>
&gt;&gt;insert geographic area information at the network layer.<br>
&gt;&gt; o) The destination nodes can be any static or moving entities, suc=
h as<br>
&gt;&gt;hosts, vehicles, sensors and actuators, goods, that are spread/loca=
ted<br>
&gt;&gt;in a certain target/destination geographic area.<br>
&gt;&gt; o) existing IETF mechanism and protocols like LISP, geopriv, ecrit=
 and<br>
&gt;&gt;reverse 911 will be taken into consideration during the design phas=
e<br>
&gt;&gt; o) The ISO 19107: Spatial Schema will be considered for the<br>
&gt;&gt;representation of spatial characteristics of geographic features<br=
>
&gt;&gt;(including geometries), and a set of spatial operations consistent =
with<br>
&gt;&gt;these schemas. ISO 19107 treats vector geometry and topology up to =
three<br>
&gt;&gt;dimensions.. Geometries range from point, multipoint, to polygon, t=
o<br>
&gt;&gt;Bezier curves, to Clothoids.<br>
&gt;&gt; o) The IEEE 1609.2, see below, will be considered&nbsp; for securi=
ty and<br>
&gt;&gt;privacy support <br>
&gt;&gt;(<a href=3D"about:blank" target=3D"_blank"></a>https://standards.ie=
ee.org/findstds/standard/1609.2-2013.html<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; Geonet Use Cases (no particular order)<br>
&gt;&gt; =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D<br>
&gt;&gt; Please one paragraph per use case should be provided<br>
&gt;&gt;<br>
&gt;&gt; o) Dissemination to a particular area:<br>
&gt;&gt; Volunteer: Georgios (old use cases that were described in v.01 of =
the<br>
&gt;&gt;problem statement draft, rewritten in few paragraphs)<br>
&gt;&gt;<br>
&gt;&gt; o) Goods Tracking<br>
&gt;&gt; Volunteer: Dino Farinacci?<br>
&gt;&gt;<br>
&gt;&gt; o) Traffic Safety and Traffic Efficiency and Traffic Management<br=
>
&gt;&gt; Volunteer: Georgios<br>
&gt;&gt;<br>
&gt;&gt; o) Mobile RSU<br>
&gt;&gt; Volunteer:<br>
&gt;&gt;<br>
&gt;&gt; o) Identification of originating area (network operator, CDN)<br>
&gt;&gt; Volunteer: needed?<br>
&gt;&gt;<br>
&gt;&gt; Differences between Geonet and othet IETF working groups:<br>
&gt;&gt; =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D<br>
&gt;&gt; Text need to be written that emphasizes that are the main differen=
ces<br>
&gt;&gt;between Geonet and at least (1) ecrit, (2) LISP and (3) geopriv. Ne=
ed<br>
&gt;&gt;volunteers for this!<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; Best regards,<br>
&gt;&gt; Georgios<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; _______________________________________________<br>
&gt;&gt; its mailing list<br>
&gt;&gt; its@ietf.org<br>
&gt;&gt; <a href=3D"https://www.ietf.org/mailman/listinfo/its" target=3D"_b=
lank">https://www.ietf.org/mailman/listinfo/its</a><br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;<br>
<br>
<br>
<br>
<br>
Dit bericht kan informatie bevatten die niet voor u is bestemd. Indien u ni=
et de geadresseerde bent of dit bericht abusievelijk aan u is toegezonden, =
wordt u verzocht dat aan de afzender te melden en het bericht te verwijdere=
n. TNO aanvaardt geen aansprakelijkheid
 voor de inhoud van deze e-mail, de wijze waarop u deze gebruikt en voor sc=
hade, van welke aard ook, die verband houdt met risico's verbonden aan het =
elektronisch verzenden van berichten.<br>
<br>
&nbsp;<br>
<br>
This message may contain information that is not intended for you. If you a=
re not the addressee or if this message was sent to you by mistake, you are=
 requested to inform the sender and delete the message. TNO accepts no liab=
ility for the content of this e-mail,
 for the manner in which you use it and for damage of any kind resulting fr=
om the risks inherent to the electronic transmission of messages.<br>
<br>
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Cc: alison@she-devel.com, melinda.shore@gmail.com, its@ietf.org
Subject: Re: [geonet/its] Mobile RSU and Multihop with Offload use-case text for a 2nd BoF geonet
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Right, I agree.

Maybe this off-loading-via-fixed-Internet of an otherwise 
RSU-multi-hopped data traffic could be considered if the Internet edge 
routers had geographical coordinates.

True, IP addresses have no notion of physical proximity, but closer 
geographical proximity would not always mean better connection either.

Alex

Le 16/01/2014 18:09, karagian@cs.utwente.nl a écrit :
> Hi Bastiaan,
>
> Thank you for sending us the descriptions of these two use cases.
>
> The decription of the mobile RSU use case includes geographical
> information in its description. I assume that a sender on the Internet
> can reach the mobile RSU using its geographical coordinates.
>
> However, the dscription of the offloading use case does not include any
> description of how the geographic inforamtion can be used to locate
> nodes, etc.
>
> Can you inlcude this information in the offloading use case?
>
> Best regards,
>
> Georgios
>
> ------------------------------------------------------------------------
> *Van:* Wissingh, B.F. (Bastiaan) [bastiaan.wissingh@tno.nl]
> *Verzonden:* donderdag 16 januari 2014 18:01
> *To:* Alexandru Petrescu
> *Cc:* Karagiannis, G. (EWI); Melinda Shore; Alison Chaiken; its@ietf.org
> *Onderwerp:* [geonet/its] Mobile RSU and Multihop with Offload use-case
> text for a 2nd BoF geonet
>
> Hi Alexandru, All,
>
> On request of Alexandru, Iıve written two brief paragraphs related to use
> cases 'Mobile Roadside Unit' and Multihop with offloading.
>
> The Mobile RSU use case:
> In the more regular case a Roadside Unit is placed somewhere alongside a
> road and gets a static geographical location which will most likely not be
> changed until the device either reaches it's end of life or is no longer
> needed at that location and therefor "teared down" (other cases may
> apply). A so called 'Mobile Roadside Unitı on the other hand is portable,
> meaning that among other settings, itıs geographical position adjusts
> according to the location it is positioned. Such a 'Mobile Roadside Unitı
> is very usable in multiple situations, for example when a permanently
> installed unit fails and needs a temporarily backup unit or during Road
> Works. In that case when at some location among a highway there is some
> ongoing Road Works, a surface man could take a 'Mobile Roadside Unit',
> position it on his car somewhere at the Road Works and start sending Road
> Works Warning messages with information about the Road Works. In some
> cases the geographical position of the could change when the Road Works
> are moving slowly.
>
> The other use case I was referring to is related to Multihop with
> offloading:
> When on a certain highway (equipped with Roadside Units) a multihop
> message is send out, this message wil be forwarded by all Roadside Units
> until it reaches its destination. This consumes resources on all Roadside
> Units along the way. A more efficient way of reaching itıs destination
> would be by offloading the message to the Internet in order for it to be
> delivered to Roadside Unit nearest to the destination of the Multihop
> message. This saves resources in the Roadside Units along the highway.
>
> Please feel free to add any comments/questions.
>
> Regards,
> Bastiaan Wissingh
>
> Op 15-01-14 15:38 schreef Alexandru Petrescu
> <alexandru.petrescu@gmail.com>:
>
>>Hello Bastiaan,
>>
>>Would you be interested in writing a brief paragraph about the 'mobile
>>RSU' use-case?  This would be for drafting a Charter proposal for this
>>Friday January 17th, to maybe make a BoF request.
>>
>>Our ongoing description is pasted at the end of this email.
>>
>>We would need something like this:
>>
>>Mobile RSU use-case
>>-------------------
>>Contrary to the typical RSU deployments where RSUs are fixed along the
>>road,
>>
>>(reference:
>>http://www.ietf.org/mail-archive/web/its/current/msg00696.html)
>>
>>Thanks in advance,
>>
>>Alex
>>
>>>
>>>
>>> Hi all,
>>>
>>> I have used the discussions that we have had up to now and updated the
>>>"Geonet" problem statement, challenges, requirements and assumptions.
>>>
>>> Please note that we need to have a new version of the problem statement
>>>draft ready before the 17th of January!
>>> Alex, Melinda is this right?
>>>
>>> For this purpose, I have used the discussions that the following people
>>>have had in the geonet/its mailing list:
>>> Alexandru Peterscu, Melinda Shore, Dino Farinacci, Brian Dickson,
>>>Dimitri Papadimitriou, Carl Reed, , Rex Buddenberg, Alison Chaiken,
>>>Georgios Karagiannis.
>>>
>>> Please note that we need volunteers to complete some issues associated
>>>with the description of use cases and with the differences between
>>>Geonet and other IETF working groups:
>>> (1)   ecrit, (2) LISP and (3) geopriv. Need volunteers for this!
>>> Regarding the use cases I have assigned some volunteers (I hope that
>>>this is acceptable):
>>>
>>> o) Dissemination to a particular area:
>>> Volunteer: Georgios (old use cases that were described in v.01 of the
>>>problem statement draft, rewritten in few paragraphs)
>>>
>>> o) Goods Tracking
>>> Volunteer: Dino Farinacci?
>>>
>>> o) Traffic Safety and Traffic Efficiency and Traffic Management
>>> Volunteer: Georgios
>>>
>>> o) Mobile RSU
>>> Volunteer: Brian Dickson?
>>>
>>> o) Identification of originating area (network operator, CDN)
>>> Volunteer: needed?
>>>
>>>
>>> Below you can find all these descriptions:
>>>
>>> Geonet Problem:
>>> =============
>>>
>>> Mechanisms and IETF Standardized  protocol(s) is/are needed to allow
>>>source  nodes anywhere in the Internet to disseminate packets to all/any
>>>node(s) using geographical area information, such as (1) geo-locators
>>>(names) and/or (2) geographic (physical) coordinates, within a specified
>>> target geographic area.
>>>
>>>
>>> Geonet Challenges/Open issues:
>>> ===============
>>>
>>> o) Mechanisms and/or protocol network layer solutions are needed for
>>>the accurate representation of geographic areas using (1) geo-locators
>>>(names) and/or (2) geographic (physical) coordinates.
>>>
>>> o) Mechanisms and/or protocol network layer solutions are needed to
>>>ensure that geographical area information (geo-locators (names) and/or
>>>geographic (physical) coordinates) is accurately mapped to an IP
>>>locator, e.g., an IP address. Mapping data bases can be maintained at
>>>the source nodes, IP locator nodes, or intermediate nodes (e.g., edge
>>>nodes).
>>>
>>> o) Mechanisms and/or protocol network layer solutions are needed to
>>>ensure that an IP locator, e.g., an IP address can be accurately mapped
>>>to a geographic area information (geo-locators (names) and/or geographic
>>>(physical) coordinates). Mapping data bases can be maintained at the
>>>source nodes, IP locator nodes, or intermediate nodes (e.g., edge nodes).
>>>
>>> o) Mechanisms and protocol network layer solutions are needed to ensure
>>>that data packets generated by source nodes placed anywhere in the
>>>Internet can be forwarded over multiple hops by using, where possible,
>>>geographic physical coordinates of (1) the destination node(s) and/or
>>>(2) the intermediate nodes for the routing decisions, instead of using
>>>their IP addresses.
>>> (Note that in order to solve the above challenge it is NOT mandated
>>>that all nodes located on the path from source to destination nodes are
>>>able to forward packets using the  geo-coordinates of (1) the
>>>destination node(s) and/or (2) the intermediate nodes for the routing
>>>decisions. This is emphasized by using the words "where possible".)
>>>
>>>
>>> Geonet Requirements
>>> ===========
>>>
>>> The specified mechanisms and protocol solutions:
>>> o) SHOULD ideally support IPv4 and IPv6
>>> o) MUST at a minimum support IPv6
>>> o) MUST be able to use and insert geographic area information at the
>>>network layer.
>>> o) MUST be able to disseminate the information from senders to the
>>>destination nodes located in the target/destination geographic area in a
>>>point to multipoint manner.
>>> o) SHOULD be able to be scalable and maintain its performance to
>>>acceptable levels even it is applied to: (1) global coverage with small
>>>target/destination geographic areas, (2) large traffic volumes (large
>>>flows), (3) large number of active sources
>>> o) MUST be able to provide accurate representation of geographic areas
>>>using (1) geo-locators (names) and/or (2) geographic (physical)
>>>coordinates.
>>> o) MUST be able to ensure that geographical area information
>>>(geo-locators (names) and/or geographic (physical) coordinates) is
>>>accurately mapped to an IP locator, e.g., an IP address, even if the
>>>relation between geographical area information and IP locator is not a
>>>one-to-one relationship.
>>> o) MUST be able to ensure that an IP locator, e.g., an IP address can
>>>be accurately mapped to a geographic area information (geo-locators
>>>(names) and/or geographic (physical) coordinates), even if the relation
>>>between locator and geographical information is not a one-to-one
>>>relationship.
>>> o) MUST be able to ensure that the used mapping data bases of IP
>>>locators to a geographic area information are up to date.
>>> o) MUST support security and privacy: Given the sensitivity of location
>>>data and the possibility of the technology being used in emergency
>>>and/or road traffic management scenarios we will pay particular
>>>attention to security and privacy.  A thorough threat analysis will be
>>>conducted, and mitigations specified in any protocol documents which are
>>>developed objectives for all supported communication modes. Security
>>>objectives particularly include integrity, privacy and non-repudiation
>>>and SHOULD protect the network and transport layer protocol headers.  In
>>>addition the Internet-wide geo-networking solution MUST also protect
>>>privacy, i.e. provide confidentiality to personal data such as relation
>>>between node identifier and location.
>>> o) SHOULD support timely and guaranteed delivery of information.
>>>
>>>
>>> Geonet Assumptions:
>>> ============
>>> o) The mechanisms and protocol solutions SHOULD be able to use and
>>>insert geographic area information at the network layer.
>>> o) The destination nodes can be any static or moving entities, such as
>>>hosts, vehicles, sensors and actuators, goods, that are spread/located
>>>in a certain target/destination geographic area.
>>> o) existing IETF mechanism and protocols like LISP, geopriv, ecrit and
>>>reverse 911 will be taken into consideration during the design phase
>>> o) The ISO 19107: Spatial Schema will be considered for the
>>>representation of spatial characteristics of geographic features
>>>(including geometries), and a set of spatial operations consistent with
>>>these schemas. ISO 19107 treats vector geometry and topology up to three
>>>dimensions.. Geometries range from point, multipoint, to polygon, to
>>>Bezier curves, to Clothoids.
>>> o) The IEEE 1609.2, see below, will be considered  for security and
>>>privacy support
>>>(<about:blank>https://standards.ieee.org/findstds/standard/1609.2-2013.html
>>>
>>>
>>>
>>>
>>> Geonet Use Cases (no particular order)
>>> ===========================
>>> Please one paragraph per use case should be provided
>>>
>>> o) Dissemination to a particular area:
>>> Volunteer: Georgios (old use cases that were described in v.01 of the
>>>problem statement draft, rewritten in few paragraphs)
>>>
>>> o) Goods Tracking
>>> Volunteer: Dino Farinacci?
>>>
>>> o) Traffic Safety and Traffic Efficiency and Traffic Management
>>> Volunteer: Georgios
>>>
>>> o) Mobile RSU
>>> Volunteer:
>>>
>>> o) Identification of originating area (network operator, CDN)
>>> Volunteer: needed?
>>>
>>> Differences between Geonet and othet IETF working groups:
>>> =======================================
>>> Text need to be written that emphasizes that are the main differences
>>>between Geonet and at least (1) ecrit, (2) LISP and (3) geopriv. Need
>>>volunteers for this!
>>>
>>>
>>> Best regards,
>>> Georgios
>>>
>>>
>>> _______________________________________________
>>> its mailing list
>>> its@ietf.org
>>>https://www.ietf.org/mailman/listinfo/its
>>>
>>>
>>
>
>
>
>
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From karagian@cs.utwente.nl  Fri Jan 17 02:29:18 2014
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From: <karagian@cs.utwente.nl>
To: <its@ietf.org>
Thread-Topic: differences between geonet and other IETF WGs
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Subject: [geonet/its] differences between geonet and other IETF WGs
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Hi all,

Below I am shortly describing what are the main differences between Geonet =
and ECRIT, GEOPRIV and LISP.

If you have any comments for modifications/additions please let us know!

The GEOPRIV WG focusses on protocols that allow applications to represent l=
ocation/geography objects and to allow users to express
policies on how these representations are exposed and used. Moreover, the G=
EOPRIV WG analyses the authorization, integrity, and privacy requirements t=
hat
must be met when these representations of location/geography are created, s=
tored, and used.=20
Geonet mainly focusses on how IP routing and addressing uses such location/=
geography representations.


The LISP WG mainly focusses mainly on network-layer-based protocol solution=
s that enable the separation of routing locators (where you are attached to=
 the=20
network) and identifiers (who you are) in one number space.
Geonet mainly focusses on how IP routing and addressing uses geography para=
meters, like geographical coordinates to disseminate packets sent by a send=
er located anywhere in the Internet to nodes that are located in the area s=
pecified by these geography parameters.


The ECRIT WG mainly focusses mainly on how location data and call routing i=
nformation  are used to enable communication between a user and a relevant =
emergency response center. In particular, the ECRIT WG has specified protoc=
ols to map emergency services identifiers and geodetic or civic location in=
formation to service contact URIs.
Geonet mainly focusses on how IP routing and addressing uses geodetic or ci=
vic location information to disseminate packets sent by a sender located an=
ywhere in the Internet to nodes that are located in the area specified by t=
his geodetic or civic location information.

Best regards,
Georgios

> -----Original Message-----
> From: Karagiannis, G. (EWI)
> Sent: woensdag 15 januari 2014 13:49
> To: 'Alexandru Petrescu'; its@ietf.org
> Subject: RE: [geonet/its] new descriptions of Geonet problem, challenges,
> requirements, assumptions + request for volunteers
>=20
> Hi Alex,
>=20
> Okay, your proposed txt is fine for me!
>=20
> Best regards,
> Georgios
>=20
>=20
> > -----Original Message-----
> > From: its [mailto:its-bounces@ietf.org] On Behalf Of Alexandru
> > Petrescu
> > Sent: woensdag 15 januari 2014 13:47
> > To: its@ietf.org
> > Subject: Re: [geonet/its] new descriptions of Geonet problem,
> > challenges, requirements, assumptions + request for volunteers
> >
> > Le 15/01/2014 09:02, karagian@cs.utwente.nl a =E9crit :
> > > Hi Rex,
> > >
> > > Thanks for the comment, however, I have a question regarding your
> > > proposed text for the stability requirement:
> > >
> > >> s/scaleable/stable Reason.  Spectrum is an inelastic resource so
> > >> you can't just up comms capacity when sources increase.  What is
> > >> important is determinism vs stochasticism.  Because deterministic
> > >> systems are stable under overload. At layer 2 we see this in the
> > >> different MACs.  CSMA (as in WiFi) is what we used to call 'free net=
'
> > >> and crashes under overload.  TDMA MACs like that in 802.16 are what
> > >> we used to call 'directed net' and are stable (and near-
> > >> deterministic).
> > >
> > > How does this requirement fits to the work that IETF needs to do?
> > > Please provide the requirement that the Geonet solution will need to
> > > support?
> >
> > Sorry for interfering in your exchange, but I believe his remark - to
> > which I agree separately - is about this GeoNet requirement:
> >
> > > The specified mechanisms and protocol solutions:
> > [...]
> > > o) SHOULD be able to be scalable and maintain its performance to
> > > acceptable levels even it is applied to: (1) global coverage with
> > > small target/destination geographic areas, (2) large traffic volumes
> > > (large flows), (3) large number of active sources
> >
> > To accommodate his remark maybe we could rather say:
> >
> > > SHOULD be able to scale, leverage on stable and deterministic
> > > underlayers when available, and maintain its performance to
> > > acceptable levels even if it is applied to: (1) global coverage with
> > > small target/destination geographic areas, (2) large traffic volumes
> > > (large flows), (3) large number of active sources
> >
> > Would this read better?
> >
> > Alex
> >
> >
> >
> >
> > >
> > > Best regards, Georgios
> > >
> > >
> > >
> > >
> > >
> > >> -----Original Message----- From: Rex Buddenberg
> > >> [mailto:buddenbergr@gmail.com] Sent: dinsdag 14 januari 2014 20:28
> > >> To: Karagiannis, G. (EWI) Cc: its@ietf.org;
> > >> dimitri.papadimitriou@alcatel.be Subject: Re: [geonet/its] new
> > >> descriptions of Geonet problem, challenges, requirements,
> > >> assumptions
> > >> + request for volunteers
> > >>
> > >> On Tue, 2014-01-14 at 12:22 +0000, karagian@cs.utwente.nl wrote:
> > >>> o) SHOULD be able to be scalable and maintain its performance to
> > >>> acceptable levels even it is applied to: (1) global coverage with
> > >>> small target/destination geographic areas, (2) large traffic
> > >>> volumes (large flows), (3) large number of active sources
> > >>
> > >> s/scaleable/stable
> > >>
> > >> Reason.  Spectrum is an inelastic resource so you can't just up
> > >> comms capacity when sources increase.  What is important is
> > >> determinism vs stochasticism.  Because deterministic systems are
> > >> stable under overload. At layer 2 we see this in the different
> > >> MACs.  CSMA (as in
> > >> WiFi) is what we used to call 'free net' and crashes under overload.
> > >> TDMA MACs like that in 802.16 are what we  used to call 'directed
> > >> net' and are stable (and near- deterministic).
> > >
> > > _______________________________________________ its mailing
> list
> > > its@ietf.org https://www.ietf.org/mailman/listinfo/its
> > >
> > >
> >
> >
> > _______________________________________________
> > its mailing list
> > its@ietf.org
> > https://www.ietf.org/mailman/listinfo/its

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From: Shourya Singh Gupta <shouryasgupta@gmail.com>
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Subject: [geonet/its] Requesting help to convert a 802.11a node into 802.11p node
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Hello
I am a 3rd year under-graduate currently pursuing my B.Tech. from
DA-IICT,Gandhinagar,India. I am currently working on Vehicular Ad-Hoc
Network(VANET) under my professor.Can somebody guide me as to how i can
convert a normal 802.11a node to use it as node for ITS(Intelligent
Transportation System).I need some guidance on this, I am stuck in this
part of my project.

--001a11c339e60b1bf704f03efe16
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<div dir=3D"ltr">Hello<br>I am a 3rd year under-graduate currently pursuing=
 my B.Tech. from DA-IICT,Gandhinagar,India. I am currently working on Vehic=
ular Ad-Hoc Network(VANET) under my professor.Can somebody guide me as to h=
ow i can convert a normal 802.11a node to use it as node for ITS(Intelligen=
t Transportation System).I need some guidance on this, I am stuck in this p=
art of my project.<br>
<br></div>

--001a11c339e60b1bf704f03efe16--

From alexandru.petrescu@gmail.com  Sun Jan 19 06:04:05 2014
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Subject: Re: [geonet/its] Requesting help to convert a 802.11a node into 802.11p node
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On 18/01/2014 14:54, Shourya Singh Gupta wrote:
> Hello I am a 3rd year under-graduate currently pursuing my B.Tech.
> from DA-IICT,Gandhinagar,India. I am currently working on Vehicular
> Ad-Hoc Network(VANET) under my professor.Can somebody guide me as to
> how i can convert a normal 802.11a node to use it as node for
> ITS(Intelligent Transportation System).I need some guidance on this,
> I am stuck in this part of my project.

Hi,

Thanks for the interest.

There is some guidance about this in Appendix C of
draft-petrescu-ipv6-over-80211p-01.txt

If the effort is more than just reporting about how to do it - actually
doing it, then you could reach many people interested in this at IETF,
in the email lists of relevant Working Groups such as 6MAN or v6ops.

Also, once realized, a 802.11p driver may be useful to communicate
geography-related data.  Maybe in a new Geography-Advertisement message
(similar to the existing 802.11p Time Advertisement message).  I wonder
whether you consider the use of geographical coordinates with the
802.11p node.

Alex

>
>
>
> _______________________________________________ its mailing list
> its@ietf.org https://www.ietf.org/mailman/listinfo/its
>


---
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Hi Shourya,

The following paper describes what you're trying to do. Unfortunately I =
couldn't find the paper on-line, but you might try to contact the =
author.
L=E1szl=F3 Vir=E1g, "Implementation of ISO/ETSI Compliant IEEE 802.11p =
Communication Using Commercial WLAN Radios", First International =
Workshop on IPv6-based Vehicular Networks, June 2012.

Best,
fran

El 18/01/2014, a las 14:54, Shourya Singh Gupta escribi=F3:

> Hello
> I am a 3rd year under-graduate currently pursuing my B.Tech. from =
DA-IICT,Gandhinagar,India. I am currently working on Vehicular Ad-Hoc =
Network(VANET) under my professor.Can somebody guide me as to how i can =
convert a normal 802.11a node to use it as node for ITS(Intelligent =
Transportation System).I need some guidance on this, I am stuck in this =
part of my project.
>=20
> _______________________________________________
> its mailing list
> its@ietf.org
> https://www.ietf.org/mailman/listinfo/its

--
Francisco J. Ros, PhD
Dept. of Information and Communications Engineering
University of Murcia, Murcia (Spain)
http://masimum.inf.um.es/fjrm/





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Hi all,

I let you know that I requested a BoF session for 'geonet' for next
IETF London.

The deliberation is ongoing; I hope for an answer by January 24th.

Alex


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Subject: Re: [geonet/its] Mobile RSU and Multihop with Offload use-case text for a 2nd BoF geonet
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Le 19/01/2014 03:15, Richard Roy a écrit :
[...]
> For those who are interested, ISO 21217 (communication architecture)
> and (ISO 21210 IPv6 communications), where the concepts of mobile and
> portable ITS stations are defined for ITS communications, the
> distinction from a networking point of view is simple.  Mobile units
> can change their point of attachment to the network at any time while
> portable/fixed units do not. Simply stated, once a portable unit
> starts to move, it disconnects from any access point ("it powers
> down"). Portable units get (static) IP addresses that do not need to
> change during a continuous interval of operation, while mobile units
> can move and change their IP addresses (assuming proper mobility
> handling in the network of course) quasi-continuously "on the fly".

Hi Richard,

Allow me some comments.

I agree that Mobile RSU may not be the best term one could come up with,
even though it does have an intuitive meaning.

On another hand, a 'portable' unit would be a unit that could be carried
by one person, and without wheels.  I think the device that Bastiaan
talks about would be on two wheels and would be tracted/pushed, but not
carried, by a person.

Second, defining a mobility term in relationship with the dynamics of
acquiring its IP address does make some sense, although the result could
also be dubious.

That's why one may think about these terms as well:

- IP-mobile unit: a unit which changes its attachment point to the
   Internet, and where route updates are not used.  It could be moving
   or static.
- IP-fixed unit: a unit which does not change its attachment point to
   the Internet.  It could be moving (mobile) or static.

Third, I have been pointed out in private that the 'RSU' term may not be
used anylonger at ETSI nor ISO.

Alex

>
>
> With regard to the requirement:
>
> "o) MUST be able to ensure that the used mapping data bases of IP
> locators to a geographic area information are up to date."
>
> I suggest that it is NOT feasible unless you also require that only a
> small and finite set of geographical areas be created and only those
> are allowed (which is NOT reasonable IMO).  To do so would obviate
> the usefulness of the concept and its implementation from the outset.
> The challenge is that there is an uncountably infinite number or
> geographical regions that can be specified (OK ... countably infinite
> if you constrain real numbers to have only a finite number of bits in
> their representations, however that's still a large number ...
> infinity).  The only theoretical way of handling this problem is to
> quantize all of the physical space in which this communication system
> is to operate (e.g. the volume of space (a shell) consisting of the
> entire surface of the earth as modeled in the WWGS84 geoid, the inner
> radius of which is the mean radius of the geoid minus X km, and the
> outer radius is the mean geoid radius plus Y km (X,Y on the order of
> a few 10s to 100s of kms perhaps). Quantize here means divide this
> volume of space into a countable number of "space chunks" ("spunks")
> which are mutually exclusive (non-overlapping) and collectively
> exhaustive (cover the entire space). What would then be required is a
> dynamic database (kept up in real time and available/discoverable to
> all forwarding nodes) of "who is where" (which IPv6 addresses are in
> which spunks, and a mechanism for assessing spunk membership in an
> arbitrarily defined geographic region. While this is theoretically
> possible, I believe it's easy to see how intractable it is. Among
> other things, it involves continuous communication connectivity
> among all spunks which is just not going to happen because no one
> will pay for the infrastructure.  Note that just having an IPv6 node
> in a spunk is not sufficient; it must be connected to the network so
> it's presence in that spunk can be "recorded in the database".  This
> is just one of the infeasible consequences of the requirement.
> Secondly, the size of the spunks has huge implications obviously on
> system feasibility versus system efficacy.  Too small and the system
> can not be deployed; too large and the deployed system is useless.
> Where's Goldilocks when you need her??? :^))
>
> With regard to the "offload" case, this is really just a case of
> "intelligent routing" at the network layer.  RSUs will very likely
> be outfitted with more than one communication media (e.g., a 5.9
> module, a Wi_Fi module, an ethernet adapter, a 3G module, etc.).
> Which media is used to get packets from their source to the
> destination will depend on a large number of factors, obviously
> including whether the media is "available" at the "present time".
> Cost and other communication requirements/objectives such as data
> rate, reliability, etc. also come into play (see ISO 17419, ISO
> 17423, IS) 17429, ISO 24102-6 ... some currently in preparation).
> Protocols for geodissemination of information should be designed to
> take this into transparently.  The objective is get information from
> one physical location to another in the most effective and efficient
> manner WHEN possible, noting that at times it may NOT be possible to
> meet this objective at all!  There is NO guarantee that a node in a
> particular spunk can reach a ndoe in some other spunk ... that is,
> globally reachability of all spunks at all time can NOT be guaranteed
> in a practical network (see above).  Even if there is connectivity,
> there can be no guarantee that when the message arrives at its
> destination, there will be any nodes there to receive it.
>
> This brings up the very important issue of TIME. When delivering
> information to a place and not a known node, time MUST be a parameter
> in the addressing scheme.  That is, it is insufficient to just
> deliver information based on location; the address MUST involve some
> concept of time (time-to-live, validity-time, etc.) otherwise, among
> other tings, there will be unbounded storage requirements in the
> network.
>
> When sending a packet to a location, it's logical to assume the
> sender does NOT know the identity (e.g. the network layer address) of
> the intended recipient, only some properties thereof like its
> location. If it did  know a network layer address (e.g. an IPv6
> address) of the intended recipient, it would use different protocols
> to get the message to its destination since recipient location is
> generally not known (having all nodes continuously know the locations
> of all nodes they might want to connect to has HUGH privacy concerns
> even if it were tractable which it is not!). This means that the
> objective of "sending a packet to a location" is incomplete and
> therefore can not be achieved.  A properly formed objective has to
> read, for example:
>
> "Deliver this packet to all receivers with which it is possible to
> connect (i.e. that have one of a given set of media with which to
> connect) in a given geographic region during the specified time
> interval."
>
> and the interval MUST be specified logically as part of the address).
> The interval could be infinite by the way, although it's hard to
> imagine how that would be useful.  Space and time are intimately
> connected in geodissemination of information. Geoaddresses are
> space-time quantities!
>
> Food for thought ...
>
> RR
>
>> -----Original Message----- From: Alexandru Petrescu
>> [mailto:alexandru.petrescu@gmail.com] Sent: Thursday, January 16,
>> 2014 6:57 PM To: karagian@cs.utwente.nl; bastiaan.wissingh@tno.nl
>> Cc: alison@she-devel.com; melinda.shore@gmail.com; its@ietf.org
>> Subject: Re: [geonet/its] Mobile RSU and Multihop with Offload
>> use-case text for a 2nd BoF geonet
>>
>> Right, I agree.
>>
>> Maybe this off-loading-via-fixed-Internet of an otherwise
>> RSU-multi-hopped data traffic could be considered if the Internet
>> edge routers had geographical coordinates.
>>
>> True, IP addresses have no notion of physical proximity, but
>> closer geographical proximity would not always mean better
>> connection either.
>>
>> Alex
>>
>> Le 16/01/2014 18:09, karagian@cs.utwente.nl a écrit :
>>> Hi Bastiaan,
>>>
>>> Thank you for sending us the descriptions of these two use
>>> cases.
>>>
>>> The decription of the mobile RSU use case includes geographical
>>> information in its description. I assume that a sender on the
>>> Internet can reach the mobile RSU using its geographical
>>> coordinates.
>>>
>>> However, the dscription of the offloading use case does not
>>> include any description of how the geographic inforamtion can be
>>> used to locate nodes, etc.
>>>
>>> Can you inlcude this information in the offloading use case?
>>>
>>> Best regards,
>>>
>>> Georgios
>>>
>>> ------------------------------------------------------------------------
>>>
>>>
*Van:* Wissingh, B.F. (Bastiaan) [bastiaan.wissingh@tno.nl]
>>> *Verzonden:* donderdag 16 januari 2014 18:01 *To:* Alexandru
>>> Petrescu *Cc:* Karagiannis, G. (EWI); Melinda Shore; Alison
>>> Chaiken; its@ietf.org *Onderwerp:* [geonet/its] Mobile RSU and
>>> Multihop with Offload use-case text for a 2nd BoF geonet
>>>
>>> Hi Alexandru, All,
>>>
>>> On request of Alexandru, Iıve written two brief paragraphs
>>> related to
>> use
>>> cases 'Mobile Roadside Unit' and Multihop with offloading.
>>>
>>> The Mobile RSU use case: In the more regular case a Roadside Unit
>>> is placed somewhere alongside a road and gets a static
>>> geographical location which will most likely not
>> be
>>> changed until the device either reaches it's end of life or is no
>>> longer needed at that location and therefor "teared down" (other
>>> cases may apply). A so called 'Mobile Roadside Unitı on the other
>>> hand is
> portable,
>>> meaning that among other settings, itıs geographical position
>>> adjusts according to the location it is positioned. Such a
>>> 'Mobile Roadside
>> Unitı
>>> is very usable in multiple situations, for example when a
>>> permanently installed unit fails and needs a temporarily backup
>>> unit or during Road Works. In that case when at some location
>>> among a highway there is some ongoing Road Works, a surface man
>>> could take a 'Mobile Roadside Unit', position it on his car
>>> somewhere at the Road Works and start sending
>> Road
>>> Works Warning messages with information about the Road Works. In
>>> some cases the geographical position of the could change when the
>>> Road Works are moving slowly.
>>>
>>> The other use case I was referring to is related to Multihop
>>> with offloading: When on a certain highway (equipped with
>>> Roadside Units) a multihop message is send out, this message wil
>>> be forwarded by all Roadside Units until it reaches its
>>> destination. This consumes resources on all
>> Roadside
>>> Units along the way. A more efficient way of reaching itıs
>>> destination would be by offloading the message to the Internet in
>>> order for it to be delivered to Roadside Unit nearest to the
>>> destination of the Multihop message. This saves resources in the
>>> Roadside Units along the highway.
>>>
>>> Please feel free to add any comments/questions.
>>>
>>> Regards, Bastiaan Wissingh
>>>
>>> Op 15-01-14 15:38 schreef Alexandru Petrescu
>>> <alexandru.petrescu@gmail.com>:
>>>
>>>> Hello Bastiaan,
>>>>
>>>> Would you be interested in writing a brief paragraph about the
>>>> 'mobile RSU' use-case?  This would be for drafting a Charter
>>>> proposal for this Friday January 17th, to maybe make a BoF
>>>> request.
>>>>
>>>> Our ongoing description is pasted at the end of this email.
>>>>
>>>> We would need something like this:
>>>>
>>>> Mobile RSU use-case ------------------- Contrary to the typical
>>>> RSU deployments where RSUs are fixed along the road,
>>>>
>>>> (reference:
>>>> http://www.ietf.org/mail-archive/web/its/current/msg00696.html)
>>>>
>>>>
>>>>
Thanks in advance,
>>>>
>>>> Alex
>>>>
>>>>>
>>>>>
>>>>> Hi all,
>>>>>
>>>>> I have used the discussions that we have had up to now and
>>>>> updated the "Geonet" problem statement, challenges,
>>>>> requirements and assumptions.
>>>>>
>>>>> Please note that we need to have a new version of the
>>>>> problem
>> statement
>>>>> draft ready before the 17th of January! Alex, Melinda is this
>>>>> right?
>>>>>
>>>>> For this purpose, I have used the discussions that the
>>>>> following
>> people
>>>>> have had in the geonet/its mailing list: Alexandru Peterscu,
>>>>> Melinda Shore, Dino Farinacci, Brian Dickson, Dimitri
>>>>> Papadimitriou, Carl Reed, , Rex Buddenberg, Alison Chaiken,
>>>>> Georgios Karagiannis.
>>>>>
>>>>> Please note that we need volunteers to complete some issues
>>>>> associated with the description of use cases and with the
>>>>> differences between Geonet and other IETF working groups: (1)
>>>>> ecrit, (2) LISP and (3) geopriv. Need volunteers for this!
>>>>> Regarding the use cases I have assigned some volunteers (I
>>>>> hope that this is acceptable):
>>>>>
>>>>> o) Dissemination to a particular area: Volunteer: Georgios
>>>>> (old use cases that were described in v.01 of the problem
>>>>> statement draft, rewritten in few paragraphs)
>>>>>
>>>>> o) Goods Tracking Volunteer: Dino Farinacci?
>>>>>
>>>>> o) Traffic Safety and Traffic Efficiency and Traffic
>>>>> Management Volunteer: Georgios
>>>>>
>>>>> o) Mobile RSU Volunteer: Brian Dickson?
>>>>>
>>>>> o) Identification of originating area (network operator,
>>>>> CDN) Volunteer: needed?
>>>>>
>>>>>
>>>>> Below you can find all these descriptions:
>>>>>
>>>>> Geonet Problem: =============
>>>>>
>>>>> Mechanisms and IETF Standardized  protocol(s) is/are needed
>>>>> to allow source  nodes anywhere in the Internet to
>>>>> disseminate packets to
>> all/any
>>>>> node(s) using geographical area information, such as (1)
>>>>> geo-locators (names) and/or (2) geographic (physical)
>>>>> coordinates, within a
>> specified
>>>>> target geographic area.
>>>>>
>>>>>
>>>>> Geonet Challenges/Open issues: ===============
>>>>>
>>>>> o) Mechanisms and/or protocol network layer solutions are
>>>>> needed for the accurate representation of geographic areas
>>>>> using (1) geo-locators (names) and/or (2) geographic
>>>>> (physical) coordinates.
>>>>>
>>>>> o) Mechanisms and/or protocol network layer solutions are
>>>>> needed to ensure that geographical area information
>>>>> (geo-locators (names) and/or geographic (physical)
>>>>> coordinates) is accurately mapped to an IP locator, e.g., an
>>>>> IP address. Mapping data bases can be maintained at the
>>>>> source nodes, IP locator nodes, or intermediate nodes (e.g.,
>>>>> edge nodes).
>>>>>
>>>>> o) Mechanisms and/or protocol network layer solutions are
>>>>> needed to ensure that an IP locator, e.g., an IP address can
>>>>> be accurately mapped to a geographic area information
>>>>> (geo-locators (names) and/or
>> geographic
>>>>> (physical) coordinates). Mapping data bases can be maintained
>>>>> at the source nodes, IP locator nodes, or intermediate nodes
>>>>> (e.g., edge
>> nodes).
>>>>>
>>>>> o) Mechanisms and protocol network layer solutions are needed
>>>>> to
>> ensure
>>>>> that data packets generated by source nodes placed anywhere
>>>>> in the Internet can be forwarded over multiple hops by using,
>>>>> where possible, geographic physical coordinates of (1) the
>>>>> destination node(s) and/or (2) the intermediate nodes for the
>>>>> routing decisions, instead of using their IP addresses. (Note
>>>>> that in order to solve the above challenge it is NOT
>>>>> mandated that all nodes located on the path from source to
>>>>> destination nodes are able to forward packets using the
>>>>> geo-coordinates of (1) the destination node(s) and/or (2) the
>>>>> intermediate nodes for the routing decisions. This is
>>>>> emphasized by using the words "where possible".)
>>>>>
>>>>>
>>>>> Geonet Requirements ===========
>>>>>
>>>>> The specified mechanisms and protocol solutions: o) SHOULD
>>>>> ideally support IPv4 and IPv6 o) MUST at a minimum support
>>>>> IPv6 o) MUST be able to use and insert geographic area
>>>>> information at the network layer. o) MUST be able to
>>>>> disseminate the information from senders to the destination
>>>>> nodes located in the target/destination geographic area in
>> a
>>>>> point to multipoint manner. o) SHOULD be able to be scalable
>>>>> and maintain its performance to acceptable levels even it is
>>>>> applied to: (1) global coverage with small target/destination
>>>>> geographic areas, (2) large traffic volumes (large flows),
>>>>> (3) large number of active sources o) MUST be able to provide
>>>>> accurate representation of geographic areas using (1)
>>>>> geo-locators (names) and/or (2) geographic (physical)
>>>>> coordinates. o) MUST be able to ensure that geographical area
>>>>> information (geo-locators (names) and/or geographic
>>>>> (physical) coordinates) is accurately mapped to an IP
>>>>> locator, e.g., an IP address, even if the relation between
>>>>> geographical area information and IP locator is not a
>>>>> one-to-one relationship. o) MUST be able to ensure that an IP
>>>>> locator, e.g., an IP address can be accurately mapped to a
>>>>> geographic area information (geo-locators (names) and/or
>>>>> geographic (physical) coordinates), even if the relation
>>>>> between locator and geographical information is not a
>>>>> one-to-one relationship. o) MUST be able to ensure that the
>>>>> used mapping data bases of IP locators to a geographic area
>>>>> information are up to date. o) MUST support security and
>>>>> privacy: Given the sensitivity of
>> location
>>>>> data and the possibility of the technology being used in
>>>>> emergency and/or road traffic management scenarios we will
>>>>> pay particular attention to security and privacy.  A thorough
>>>>> threat analysis will be conducted, and mitigations specified
>>>>> in any protocol documents which
>> are
>>>>> developed objectives for all supported communication modes.
>>>>> Security objectives particularly include integrity, privacy
>>>>> and non-repudiation and SHOULD protect the network and
>>>>> transport layer protocol headers.
>> In
>>>>> addition the Internet-wide geo-networking solution MUST also
>>>>> protect privacy, i.e. provide confidentiality to personal
>>>>> data such as relation between node identifier and location.
>>>>> o) SHOULD support timely and guaranteed delivery of
>>>>> information.
>>>>>
>>>>>
>>>>> Geonet Assumptions: ============ o) The mechanisms and
>>>>> protocol solutions SHOULD be able to use and insert
>>>>> geographic area information at the network layer. o) The
>>>>> destination nodes can be any static or moving entities, such
>>>>> as hosts, vehicles, sensors and actuators, goods, that are
>>>>> spread/located in a certain target/destination geographic
>>>>> area. o) existing IETF mechanism and protocols like LISP,
>>>>> geopriv, ecrit and reverse 911 will be taken into
>>>>> consideration during the design phase o) The ISO 19107:
>>>>> Spatial Schema will be considered for the representation of
>>>>> spatial characteristics of geographic features (including
>>>>> geometries), and a set of spatial operations consistent with
>>>>> these schemas. ISO 19107 treats vector geometry and topology
>>>>> up to
>> three
>>>>> dimensions.. Geometries range from point, multipoint, to
>>>>> polygon, to Bezier curves, to Clothoids. o) The IEEE 1609.2,
>>>>> see below, will be considered  for security and privacy
>>>>> support
>>>>> (<about:blank>https://standards.ieee.org/findstds/standard/1609.2-
>>
>>>>>
2013.html
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> Geonet Use Cases (no particular order)
>>>>> =========================== Please one paragraph per use case
>>>>> should be provided
>>>>>
>>>>> o) Dissemination to a particular area: Volunteer: Georgios
>>>>> (old use cases that were described in v.01 of the problem
>>>>> statement draft, rewritten in few paragraphs)
>>>>>
>>>>> o) Goods Tracking Volunteer: Dino Farinacci?
>>>>>
>>>>> o) Traffic Safety and Traffic Efficiency and Traffic
>>>>> Management Volunteer: Georgios
>>>>>
>>>>> o) Mobile RSU Volunteer:
>>>>>
>>>>> o) Identification of originating area (network operator,
>>>>> CDN) Volunteer: needed?
>>>>>
>>>>> Differences between Geonet and othet IETF working groups:
>>>>> ======================================= Text need to be
>>>>> written that emphasizes that are the main differences between
>>>>> Geonet and at least (1) ecrit, (2) LISP and (3) geopriv.
>>>>> Need volunteers for this!
>>>>>
>>>>>
>>>>> Best regards, Georgios
>>>>>
>>>>>
>>>>> _______________________________________________ its mailing
>>>>> list its@ietf.org https://www.ietf.org/mailman/listinfo/its
>>>>>
>>>>>
>>>>
>>>
>>>
>>>
>>>
>>> Dit bericht kan informatie bevatten die niet voor u is bestemd.
>>> Indien u niet de geadresseerde bent of dit bericht abusievelijk
>>> aan u is toegezonden, wordt u verzocht dat aan de afzender te
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>>> u deze gebruikt en voor schade, van welke aard ook, die verband
>>> houdt met risico's verbonden aan het elektronisch verzenden van
>>> berichten.
>>>
>>>
>>>
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>>> you by mistake, you are requested to inform the sender and delete
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>>>
>>
>>
>
>
>
>



From alexandru.petrescu@gmail.com  Wed Jan 22 08:16:57 2014
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Subject: [geonet/its] proposal of Charter, during the BoF request submission
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Hello,

During the BoF request process we drafted a small proposal of Charter. 
It is maintained at
https://github.com/MelindaShore/geonet/blob/master/charterproposal.txt

and the current version pasted below.

Please comment on this Charter proposal.

Yours,

Alex

----------------------------------------------------------------------
               GeoNet BoF at IETF
                Charter Proposal
               January 17th, 2014
          http://ietf.org/mailman/listinfo/its



Internet-Wide GeoNetworking (GeoNet)
------------------------------------
Current Status: BoF

Chairs:
   Melinda Shore
   Alexandru Petrescu

Assigned Area Director:
   Ted Lemon

Mailing list
   Address: its@ietf.org
   To Subscribe: https://www.ietf.org/mailman/listinfo/its
   Archive:
   http://www.ietf.org/mail-archive/web/its/current/maillist.html

Additional web page, old
   http://www.lara.prd.fr/ietf-its

Charter Proposal

The group is concerned with Internet-wide geonetworking.

IP routing and addressing are completely unaware of
geography. Mechanisms and IETF protocols are needed for
authorized source nodes anywhere in the Internet to
disseminate packets to other nodes in areas described by
geographic parameters, while respecting the privacy concerns
of sender and receiver. Parameters such as geographical
coordinates and other geo-locators such as civic addresses
should be usable.

In particular, mechanisms and protocol solutions are needed:

. for the accurate representation of geographic areas using
   (1) geolocators such as names and (2) physical geographic
   coordinates.

. to ensure that geographical area information (for example,
   geolocators, names, and physical geographic coordinates)
   is accurately mapped to an IP address. Mapping data bases
   can be maintained at the source nodes, intermediate or
   edge nodes, and at specific IP locator nodes.

. to ensure that an IP address can be accurately mapped to a
   geographic area information (geo-locators, names, and
   geographic physical coordinates). Note that this refers
   to the addresses of access routers, roadside units (RSUs),
   and so on, and not end nodes. Mapping data bases can be
   maintained at the source nodes, intermediate or edge
   nodes, and at specific IP locator nodes.

. to ensure that data packets generated by source nodes
   placed arbitrarily in the Internet can be forwarded over
   multiple hops by using, where possible, geographic
   physical coordinates of (1) the destination node(s) and/or
   (2) the intermediate nodes for the routing decisions,
   instead of using their IP addresses. Note that in order
   to solve the above challenge it is NOT mandated that all
   nodes located on the path from source to destination nodes
   are able to forward packets using the geo-coordinates of
   (1) the destination node(s) and/or (2) the intermediate
   nodes for the routing decisions. This is emphasized by
   using the words "where possible".

The main use-cases are:
o dissemination to a geographical area
o goods tracking
o vehicular traffic safety, efficiency, management and infotainment
o mobile road-side unit
o identification of originating area
o geolocation of instrumented ambulance

Protocol work would begin after completion of these work items listed
below, and upon rechartering.

Work Items
----------
o Problem Statement I-D (INFORMATIONAL)
o GeoNet Terminology I-D (INFORMATIONAL)
o Description of Geospatial Locators I-D (INFORMATIONAL)
o GeoNet Framework (INFORMATIONAL)
o Mapping Between IP Locators and Geospatial Locators (INFORMATIONAL)

Milestones:
   Jul 2014 -

   Oct 2014 -

   Mar 2015 -


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Subject: [geonet/its] updated text of Charter
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Hi,

I have received remarks about the Charter.  I have then modified it to 
take them into account.

The latest version is at this URL and pasted below.

https://github.com/MelindaShore/geonet/blob/master/charterproposal.txt

What do you think?

Alex

--------------------------------------------------------------
                         GeoNet BoF at IETF
                          Charter Proposal
                          January 23rd, 2014
            https://github.com/MelindaShore/geonet/wiki


Internet-Wide GeoNetworking (GeoNet)
------------------------------------
Current Status: BoF

Chairs:
   Melinda Shore
   Alexandru Petrescu

Assigned Area Director:
   Ted Lemon

Mailing list
   Address: its@ietf.org
   To Subscribe: https://www.ietf.org/mailman/listinfo/its
   Archive:
   http://www.ietf.org/mail-archive/web/its/current/maillist.html

Additional web page:
   https://github.com/MelindaShore/geonet/wiki
   or the older http://www.lara.prd.fr/ietf-its

Charter Proposal

The group is concerned with Internet-wide geonetworking.

IP routing and addressing are completely unaware of geography.
Mechanisms and IETF protocols are needed for authorized source nodes
anywhere in the Internet to disseminate packets to other nodes in
areas described by geographic parameters, while respecting the privacy
concerns of sender and receiver. Parameters such as geographical
coordinates and other geo-locators such as civic addresses should be
usable in order to specify the destination of the dissemination.

The new dissemination mechanism can not be used to identify the
geographical situation of computers issuing requests to resources, nor
to prevent access based on such supposed identification.

The initial objectives of the group are focused in particular on a
common vocabulary for contexts using IP protocols and geography
coordinates, on a data definition of geolocators, and on defining a
bi-directional relationship - not a mechanism - between geo-spatial
locators and IP locators.

In general, for a complete solution, mechanisms and protocol solutions
are needed for the items below:

=2E. for the accurate representation of geographic areas using (1)
   geolocators such as names and (2) physical geographic coordinates.

=2E. to ensure that geographical area information (for example,
   geolocators, names, and physical geographic coordinates) is
   accurately mapped to an IP address. Mapping data bases can be
   maintained at the source nodes, intermediate or edge nodes, and at
   specific IP locator nodes.

=2E. to ensure that an IP address can be accurately mapped to a
   geographic area information (geo-locators, names, and geographic
   physical coordinates). Note that this refers to the addresses of
   access routers, roadside units (RSUs), and so on, and not end nodes.
   Mapping data bases can be maintained at the source nodes,
   intermediate or edge nodes, and at specific IP locator nodes.

=2E. to ensure that data packets generated by source nodes placed
   arbitrarily in the Internet can be forwarded over multiple hops by
   using, where possible, geographic physical coordinates of (1) the
   destination node(s) and/or (2) the intermediate nodes for the
   routing decisions, instead of using their IP addresses. Note that
   in order to solve the above challenge it is NOT mandated that all
   nodes located on the path from source to destination nodes are able
   to forward packets using the geo-coordinates of (1) the destination
   node(s) and/or (2) the intermediate nodes for the routing
   decisions. This is emphasized by using the words "where possible".

The main use-cases are:
o dissemination to a geographical area
o goods tracking
o vehicular traffic safety, efficiency, management and infotainment
o mobile road-side unit
o identification of originating area
o geolocation of instrumented ambulance

Protocol work would begin after completion of the work items listed
below, and upon rechartering.

Work Items
----------
o Problem Statement I-D (INFORMATIONAL)
o GeoNet Terminology I-D (INFORMATIONAL)
o Data Description of Geospatial Locators I-D (INFORMATIONAL)
o GeoNet Framework (INFORMATIONAL)
o Mapping Between IP Locators and Geospatial Locators (INFORMATIONAL)

Milestones:
   Jul 2014 -

   Oct 2014 -

   Mar 2015 -

---
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From melinda.shore@gmail.com  Thu Jan 23 19:06:52 2014
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Date: Thu, 23 Jan 2014 18:06:46 -0900
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Hi, all:

(Question at the bottom)

As things currently stand, our request for a BOF in London
has been turned down.  That may change but whether or not
it does, we need to be focused on getting a credible charter
together, where "credible" means that

1) we've identified a problem which needs to be solved
2) a problem that fits within the scope of the IETF
3) a problem that's sufficiently well-scoped that we
   can deliver the documents we've promised to deliver
4) clearly identified, scoped (that word again!), and
   useful documents as deliverables

as well as a general indication that we're not going
to wander into the weeds on architectural issues, etc.

We're getting there but haven't yet arrived.  As a rule,
in the IETF work is done on mailing lists and meeting time
is used to work through issues that really can't be
resolved without face-to-face discussion.  Meeting time
is used for discussion, not presentation.  So, if we
end up without being able to have a scheduled BOF there is
still the option to have an informal "side meeting" (sometimes
known as bar BOFs) with a room allocated, and Ted has
generously offered to make remote participation facilities
available if we do decide that we'd like to do this.

So, the question is this: Would people find it valuable
to get together for some discussion in London?  If so,
it would be helpful if you could mention something about
how you'd like to use the time.  Alex and I have some
ideas about that but there may be something we haven't
thought of.

Thanks,

Melinda & Alex

From melinda.shore@gmail.com  Thu Jan 30 10:28:55 2014
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I'd like to start a discussion about potential scope and how
it's impacted (or not) by particular use cases.  In particular
it's pretty clear that disseminating IP packets to geographic
locations is in scope.  It is less clear that identifying the
location of a sender is, and we should talk about that
(particularly in the context of current efforts to harden the
internet against eavesdropping and other privacy invasions).

The current use case that addresses this most directly is
the one regarding an ISP using source geolocation for traffic
engineering.  I think we need to be much clearer about why
this would need to be solved using an IP address/geolocation
mapping rather than some other mechanism and why this would
fall within the same set of work items as geographic packet
dissemination.  Because operators already know who their
customers are, what addresses are assigned to them, which
cable is plugged into which port on a router, and so on, we'd
need to identify what's currently not known and (again)
why an address-to-location mapping is the right way to solve
it.  We'd also need to be prepared to respond to some rather
difficult questions about subscriber privacy.

We do not need a long list of use cases.  We do need a few
compelling ones along with an argument for why we think the
approach we've been discussing is the right way to address
those use cases.  So, I think we need to either strengthen
the address-to-locator mapping use case, or drop it.  How
do you all feel about this?

Melinda

From lear@cisco.com  Thu Jan 30 10:49:51 2014
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Subject: Re: [geonet/its] Question about scoping
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Hi Melinda,

On 1/30/14, 7:28 PM, Melinda Shore wrote:
> I'd like to start a discussion about potential scope and how
> it's impacted (or not) by particular use cases.  In particular
> it's pretty clear that disseminating IP packets to geographic
> locations is in scope.  It is less clear that identifying the
> location of a sender is, and we should talk about that
> (particularly in the context of current efforts to harden the
> internet against eavesdropping and other privacy invasions).

This is a great question, and it's an important question with regard to
privacy.

As I see it, it depends on whether one expects to engage in two way
communications.  If one does not, then why would one need to have the
location of the sender.  If one does, then the location of the sender
may become self-evident (e.g., by acting on something that was scoped).

>
> The current use case that addresses this most directly is
> the one regarding an ISP using source geolocation for traffic
> engineering.  I think we need to be much clearer about why
> this would need to be solved using an IP address/geolocation
> mapping rather than some other mechanism and why this would
> fall within the same set of work items as geographic packet
> dissemination.  Because operators already know who their
> customers are, what addresses are assigned to them, which
> cable is plugged into which port on a router, and so on, we'd
> need to identify what's currently not known and (again)
> why an address-to-location mapping is the right way to solve
> it.  We'd also need to be prepared to respond to some rather
> difficult questions about subscriber privacy.

One of the questions we would need to answer, I think, is what physical
interfaces can be assumed, if any.  Are we requiring that 802.11p be
deployed?  If not, are we anticipating separate cell networks from the
geonet?

Eliot

From melinda.shore@gmail.com  Thu Jan 30 12:20:30 2014
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Date: Thu, 30 Jan 2014 11:20:22 -0900
From: Melinda Shore <melinda.shore@gmail.com>
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Subject: Re: [geonet/its] Question about scoping
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On 1/30/14 9:49 AM, Eliot Lear wrote:
> As I see it, it depends on whether one expects to engage in two way
> communications.  If one does not, then why would one need to have the
> location of the sender.  If one does, then the location of the sender
> may become self-evident (e.g., by acting on something that was scoped).

Yes, but that's not quite the same as maintaining a
mapping.  Clearly it's the case that unless mitigations
are put in place an attacker could send out a broadcast
to a particular location and see who's there by looking
at responses (if, in fact, there are any).  But that's
not quite the same as "I want to find where the holder of
IP address 123.345.567.789 is right now."  Package
tracking is probably a much stronger use case for this
sort of thing than traffic engineering but even so it's
probably worth asking why current technologies are
inadequate.  We're looking for problems that have not
been solved, or have been solved but badly, rather
than trying to develop a laundry list of things that
could possibly be done with this technology, I
believe.

Melinda


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Subject: Re: [geonet/its] Question about scoping
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On Thursday, January 30, 2014, Melinda Shore wrote:

> why an address-to-location mapping is the right way to solve
> it.

Because IMHO it is the easiest way to solve it, there may be other ways but
all organisations start simple.

>
> We do not need a long list of use cases.  We do need a few
> compelling ones along with an argument for why we think the
> approach we've been discussing is the right way to address
> those use cases.


I agree,


> So, I think we need to either strengthen
> the address-to-locator mapping use case, or drop it.


Why we think it is better to strengthen used use cases? Usually if a case
is used in real life and IETF is missing the community practice I think
IETF needs to strengthen its work to follow reality but not ignore why they
used it.


> How
> do you all feel about this?


I don't think to have only two way directions (strength or drop) ,
how about adding two other directions; simplest cases available and
practical cases used.

AB

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<br>On Thursday, January 30, 2014, Melinda Shore  wrote:<div><blockquote cl=
ass=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;p=
adding-left:1ex">
why an address-to-location mapping is the right way to solve<br>
it.=A0</blockquote><div>Because IMHO=A0it is the easiest way to solve it, t=
here may be other ways but all organisations=A0start simple.=A0</div><block=
quote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc=
 solid;padding-left:1ex">

<br>
We do not need a long list of use cases. =A0We do need a few<br>
compelling ones along with an argument for why we think the<br>
approach we&#39;ve been discussing is the right way to address<br>
those use cases. =A0</blockquote><blockquote class=3D"gmail_quote" style=3D=
"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"></blockquot=
e><div><br></div><div>I agree,=A0</div><div>=A0</div><blockquote class=3D"g=
mail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-l=
eft:1ex">
So, I think we need to either strengthen<br>
the address-to-locator mapping use case, or drop it. =A0</blockquote><block=
quote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc=
 solid;padding-left:1ex"></blockquote><div><br></div><div>Why we=A0think it=
 is better to strengthen used use cases? Usually if a case is used in real =
life and IETF is missing the community=A0practice I think IETF needs to str=
engthen its work to follow reality but not ignore why they used it.=A0</div=
>
<div>=A0</div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;=
border-left:1px #ccc solid;padding-left:1ex">How<br>
do you all feel about this?</blockquote><div><br></div><div>I don&#39;t thi=
nk to have only two way directions=A0(strength or drop)=A0, how=A0about add=
ing two other directions;=A0simplest cases=A0available and practical cases=
=A0used.=A0</div>
<div><br></div><div>AB</div></div>

--20cf305e262bdb4fe704f14e2053--

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Subject: Re: [geonet/its] Question about scoping
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On Thursday, January 30, 2014, Eliot Lear wrote:

> Hi Melinda,
>
> On 1/30/14, 7:28 PM, Melinda Shore wrote:
> > In particular
> > it's pretty clear that disseminating IP packets to geographic
> > locations is in scope.  It is less clear that identifying the
> > location of a sender is, and we should talk about that
> > (particularly in the context of current efforts to harden the
> > internet against eavesdropping and other privacy invasions).
>
> This is a great question, and it's an important question with regard to
> privacy.
>
> As I see it, it depends on whether one expects to engage in two way
> communications.  If one does not, then why would one need to have the
> location of the sender.


Each location may have special service. So the applications need locations
information.


> If one does, then the location of the sender
> may become self-evident (e.g., by acting on something that was scoped).


What does this mean? Is it advantage or disadvantage?

>
> >
> > The current use case that addresses this most directly is
> > the one regarding an ISP using source geolocation for traffic
> > engineering.  I think we need to be much clearer about why
> > this would need to be solved using an IP address/geolocation
> > mapping rather than some other mechanism and why this would
> > fall within the same set of work items as geographic packet
> > dissemination.  Because operators already know who their
> > customers are, what addresses are assigned to them, which
> > cable is plugged into which port on a router, and so on, we'd
> > need to identify what's currently not known and (again)
> > why an address-to-location mapping is the right way to solve
> > it.  We'd also need to be prepared to respond to some rather
> > difficult questions about subscriber privacy.
>
> One of the questions we would need to answer, I think, is what physical
> interfaces can be assumed, if any.  Are we requiring that 802.11p be
> deployed?  If not, are we anticipating separate cell networks from the
> geonet?


IMHO Physical interface is to be used only not depending on it.

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<br><br>On Thursday, January 30, 2014, Eliot Lear  wrote:<br><blockquote cl=
ass=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;p=
adding-left:1ex">Hi Melinda,<br>
<br>
On 1/30/14, 7:28 PM, Melinda Shore wrote:<br>
&gt; In particular<br>
&gt; it&#39;s pretty clear that disseminating IP packets to geographic<br>
&gt; locations is in scope. =A0It is less clear that identifying the<br>
&gt; location of a sender is, and we should talk about that<br>
&gt; (particularly in the context of current efforts to harden the<br>
&gt; internet against eavesdropping and other privacy invasions).<br>
<br>
This is a great question, and it&#39;s an important question with regard to=
<br>
privacy.<br>
<br>
As I see it, it depends on whether one expects to engage in two way<br>
communications. =A0If one does not, then why would one need to have the<br>
location of the sender. =A0</blockquote><blockquote class=3D"gmail_quote" s=
tyle=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"></bl=
ockquote><div><br></div><div>Each location may have special service. So the=
 applications need locations information.=A0</div>
<div>=A0</div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;=
border-left:1px #ccc solid;padding-left:1ex">If one does, then the location=
 of the sender<br>
may become self-evident (e.g., by acting on something that was scoped).</bl=
ockquote><div><br></div><div>What does this mean? Is it advantage or disadv=
antage?=A0</div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8e=
x;border-left:1px #ccc solid;padding-left:1ex">

<br>
&gt;<br>
&gt; The current use case that addresses this most directly is<br>
&gt; the one regarding an ISP using source geolocation for traffic<br>
&gt; engineering. =A0I think we need to be much clearer about why<br>
&gt; this would need to be solved using an IP address/geolocation<br>
&gt; mapping rather than some other mechanism and why this would<br>
&gt; fall within the same set of work items as geographic packet<br>
&gt; dissemination. =A0Because operators already know who their<br>
&gt; customers are, what addresses are assigned to them, which<br>
&gt; cable is plugged into which port on a router, and so on, we&#39;d<br>
&gt; need to identify what&#39;s currently not known and (again)<br>
&gt; why an address-to-location mapping is the right way to solve<br>
&gt; it. =A0We&#39;d also need to be prepared to respond to some rather<br>
&gt; difficult questions about subscriber privacy.<br>
<br>
One of the questions we would need to answer, I think, is what physical<br>
interfaces can be assumed, if any. =A0Are we requiring that 802.11p be<br>
deployed? =A0If not, are we anticipating separate cell networks from the<br=
>
geonet?</blockquote><div><br></div><div>IMHO=A0Physical interface is to be =
used only=A0not depending=A0on it.=A0</div>

--047d7b1601572aa99b04f14e53b0--

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Date: Sat, 1 Feb 2014 02:53:39 +0100
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From: Abdussalam Baryun <abdussalambaryun@gmail.com>
To: Melinda Shore <melinda.shore@gmail.com>
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Cc: "its@ietf.org" <its@ietf.org>, Eliot Lear <lear@cisco.com>
Subject: Re: [geonet/its] Question about scoping
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On Thursday, January 30, 2014, Melinda Shore wrote:
>
>   But that's
> not quite the same as "I want to find where the holder of
> IP address 123.345.567.789 is right now."  Package
> tracking is probably a much stronger use case for this
> sort of thing than traffic engineering but even so it's
> probably worth asking why current technologies are
> inadequate.


There is mobile IP for that discovery as RFC3775. An extension to that may
be needed for our geonet-its protocols.

We're looking for problems that have not
> been solved, or have been solved but badly,


Why badly? And who solved it badly?


AB

>
>

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<br><br>On Thursday, January 30, 2014, Melinda Shore  wrote:<blockquote cla=
ss=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;pa=
dding-left:1ex">=A0 But that&#39;s<br>
not quite the same as &quot;I want to find where the holder of<br>
IP address 123.345.567.789 is right now.&quot; =A0Package<br>
tracking is probably a much stronger use case for this<br>
sort of thing than traffic engineering but even so it&#39;s<br>
probably worth asking why current technologies are<br>
inadequate. =A0</blockquote><blockquote class=3D"gmail_quote" style=3D"marg=
in:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"></blockquote><di=
v><br></div><div>There is mobile IP for that discovery as=A0RFC3775. An ext=
ension to that=A0may be needed for our geonet-its=A0protocols.=A0</div>
<div><br></div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex=
;border-left:1px #ccc solid;padding-left:1ex">We&#39;re looking for problem=
s that have not<br>
been solved, or have been solved but badly,</blockquote><blockquote class=
=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padd=
ing-left:1ex"></blockquote><div><br></div><div>Why badly? And who solved it=
 badly?</div>
<div>=A0</div><div><br></div><div>AB</div><blockquote class=3D"gmail_quote"=
 style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><b=
r>
</blockquote>

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