Subject: [lp-wan] Outline, SCHC Design Team meeting, January 11th

From: Alexander Pelov <[email-masked]>
Date: Wed, 11 Jan 2017 17:26:21 +0100

Dear all,

Today the design team discussed the CoAP compression part. I feel that the progress is really impressive, with the following goals:
- v+1 published in two weeks (25/01) - sufficient for basic CoAP compression implementation
- v+2 published two weeks later (8/02) - more advanced (and essential) features added

See more details in the outline at the end of this mail.

Best,
Alexander

- - - - - - - - - -

- Meeting on January 11th
 -- Participants: Ana, Laurent, Carsten, Carles, Diego, Alexander

- - - - - - - - - -

- Presentation of the CoAP scenarios
  -- Mostly uplink traffic, context configuration, CoMI
  -- Discussions on the ways to compress the Message-ID over the air. This is the CoAP proxy’s work, so in line with the compression.
- Questions
 -- How to compress CBOR structures - in a given payload some parts may be fixed, some may be variable
    -- New compression rule
    -- Use CBOR tags
 -- How to compress the variable URIs in CoMI GET, PUT, DELETE methods ?
    -- For the moment, optimize the FETCH/PATCH methods, add compression functions for variable URI-Paths later (GET/PUT/DELETE)

- TODOs
  -- Carsten: LWM2M trafic definition (check with @core wg)
  -- Carsten: CBOR template (check with @cbor wg)
  -- Diego, Carles: review current draft, improve readability
  -- Laurent and Ana: update the current draft
  -- Laurent: publish CoAP trafic document

- Next meeting:
  -- 25/01 - release v+1 of the CoAP compression
  -- 08/02 - release v+2 of the CoAP compression with CBOR and URI-Path template and L2MWM trafic optimization