# Connection details


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+ [CodiMD](https://codimd.ietf.org/notes-ietf-interim-2021-lpwan-09-lpwan)
+ [Session info](https://datatracker.ietf.org/meeting/interim-2021-lpwan-09/session/lpwan)

Data / Time
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+ Date: June 1st, 2021
+ Time: [7-8am US Pacific PST, 4pm CEST](https://www.worldtimebuddy.com/?qm=1&lid=100,12,5392171,1850147&h=100&date=2021-06-01&sln=16-17)


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# Agenda

## [16:05] Administrivia                            [15min]
*     Note-Well, Scribes, Agenda Bashing
*     WG Status

## [16:20] Data Model for SCHC                      [15min]
*     Yang Doctors feedback

## [16:35] AUTH-48 for RFC-to-be 8824               [15min]
*     Status (Ana + Eric)

## [16:50]  AOB                                     [ QS ]


# Action items
## Next


## Last


# Bluesheets

* Éric Vyncke, Cisco
* Alexander Pelov, Acklio
* Pascal Thubert, Cisco
* Laurent Toutain, IMT Atlantique
* Julien Catalano, Kerlink
* Dominique Barthel, Orange
* Ana Minaburo, Acklio
* Olivier Gimenez, Semtech
* Vincent Audebert, EDF
* Carsten Bormann, TZI
* Juan Carlos Zúñiga, Sigfox

(last interims for copy/paste)


* Éric Vyncke, Cisco
* Alexander Pelov, Acklio
* Pascal Thubert, Cisco
* Laurent Toutain, IMT Atlantique
* Julien Catalano, Kerlink
* Carsten Bormann, TZI
* Olivier Gimenez, Semtech
* Juan Carlos Zúñiga, Sigfox
* Carles Gomez, Universitat Politecnica de Catalunya
* Diego Dujovne, UDP
* Sergio Aguilar

* Georgios Papadopoulos, IMT Atlantique
* Dominique Barthel, Orange
* Ana Minaburo, Acklio
* Edgar Ramos, Ericsson
* Paul Duffy, Cisco
* Vincent Audebert, EDF
* Ivaylo Petrov, Acklio
* Arunprabhu Kandasamy, Acklio
* Sean Turner, sn3rd
* J Lecoeuvre
* David Millman
* Ricardo Andreasen
* Arthur Oval




# Minutes


## [16:05] Administrivia                            [15min]
*    Note-Well, Scribes, Agenda Bashing
*    WG Status

Pascal done the agenda + action items from last time
No LPWAN WG session at IETF111 meeting
Action item for Carsten (from last time)
See and answer to the mail in the mailing list
Architecture Draft is now WG document ver00 has been published
OAM doc to be resumed, meant to be WGLC'ed in July. Dominique to act on it.

## [16:20] Mandatory Features in the data model                      [15min]
*  YANG Doctors feedback
*  fragmention to be made optional
   
YANG doctors has not responded
Simplify the implementation using features? features could include compression, fragmentation, maybe others (proxy behavior, variable length fields?)
Unclear whether this brings value
Alex: we need an in-depth discussion with slides on this. Quite abstract and difficult to discuss in an improvised way.
Laurent suggests to make compression and fragmentation both optional and see how model is changed.
Juan Carlos: Agree that compression could also be an option on top of fragmentation.
Pascal: example of compression done on one SCHC CD-FR and fragmentation on another
Carsten: in general, options in protocols are bad. If any exist, they should be bound to "instance" (meaning, profiles?), like SCHC for Sigfox.
Carsten: negotiation of features adds complexity to the protocol.
Pascal concurs.
Presentation by Laurent on this at next meeting.


## [16:35] AUTH-48 for RFC-to-be 8824               [20min]
*    Status (Ana + Eric)
more RFC Ed. comments
some items to be discussed here
  - title for RFC: either fully abbreviated or fully expanded
    consensus on "Static Context ... (SCHC) for the Constrained ... (CoAP)"
  - use "SCHC compression" as a noun. On first use of SCHC, where expansion is needed, tweak the text so that the issue does not show.
  - Fig 5 / Table 2. Usage of double quotes, Laurent and Ana confirm that CoAP does not use double quote in URI

See also [https://www.rfc-editor.org/auth48/rfc8824]

    

## [16:55]  AOB                                     [ QS ]