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Agenda

[16:05] Administrivia [5min]

[16:10] SCHC for CoAP [10min]

[16:20] SCHC for SigFox [20min]

[16:40] Data Model for SCHC [15min]

[16:55] AOB [ QS ]

Bluesheets

(last interims for copy/paste)

Minutes

To do

chairs: Push the OAM document to 2/22
JCZ: to ask the ML about how to publish 1) the compound ack and 2)the associated YANG

[16:05] Administrivia [5min]

Alexander makes the intro / agenda bashing / BCP 79
Encouraging to join codimd

Approving minutes from last time
Do we want to change the milestones? data model draft is likely to be end of year
Laurent: draft is almost ready. Does it fit the need?
Pascal: checked the YANG specific recommendations of shephard write-up?
Laurent: done.
Pascal: doc probably going to be a bit late, do we need to update the deliverable date?
Eric: not for a few weeks/months as long as the milestones are not off by more then 3 months
Pascal: more worried about the OAM doc. Pushed to Feb 2022.

Reminder: no LPWAN session at IETF111 meeting.

[16:10] SCHC for CoAP [10min]

Ana on SCHC / CoAP
Missing a WG agreement on the title
Abbreviated title should be SCHC for CoAP
For the extended 3 choices

[16:20] SCHC for SigFox [20min]

Juan Carlos presents
Introducing the new SCHC compound ack
Pascal: how is that compared to a larger window? Just to save btsin the FCN?
JC: this gives more flexibility to send the ack sooner if radio conditions are bad
Laurent: does the compound ACK need to go into the data model?
JCZ: have not thought about it so far. Maybe.
JCZ: draft progressing neatly, need a little more to update. useful to keep advancing the draft before WGLC.
Pascal: Ideally you'd publish a month before IETF in Madrid so we can launch the WGLC and complete the discussions at IETF 112

[16:40] Data Model for SCHC [15min]

YANG "features" can only be high level, e.g. fragmentation or compression. May not depend on protocol being parsed.
Pascal recommends to incorporate compound ACK int the data model, and default it to "no".
Laurent: pb of normative ref?
Alex: schc-over-sigfox draft could augment YANG model later.
Eric: would be better to have a single SCHC module. But not at the expensive of waiting two extra years.
Alex: writing a separate document would be useful to the community.
3 options
- delay yang draft to incorporate compound ack, SigFox document defines the operation as today
- compound ACK and YANG model extension in document separate from the SigFox profile
- All merged in SigFox document adding the Yang to the SigFox document
Laurent: what is the process to request SID values? After publication?
Carsten: write own registry until main one exists (??)

[16:55] AOB [ QS ]