Re: [WoT+NGSI-LD] minutes - 28 October 2024

available at:
  https://www.w3.org/2024/11/11-wot-ngsi-ld-minutes.html


also as text below.

Plase note:
* We've started to use "wot-ngsi-ld" as the IRC channel, so the file name
  of the minutes is now "11-wot-ngsi-ld-minutes.html".
* The call on Nov. 25 will be cancelled due to the upcoming F2F meeting
  of the WoT WG/IG in Munich. The next call will be held on Dec. 9.

Thanks,

Kazuyuki

---
   [1]W3C

      [1] https://www.w3.org/


                             – DRAFT –
                            WoT and NGSI-LD

11 November 2024

   [2]Agenda. [3]IRC log.

      [2] https://www.w3.org/WoT/IG/wiki/WoT-NGSI-LD#November_11,_2024

      [3] https://www.w3.org/2024/11/11-wot-ngsi-ld-irc


Attendees

   Present
          Dave_Raggett, Franck_Le_Gall, Juanjo_Hierro,
          Kaz_Ashimura, Martin_Bauer, Michael_McCool

   Regrets
          Sebastian, Koster

   Chair
          McCool

   Scribe
          kaz

Contents

    1. [4]Agenda
    2. [5]Minutes
    3. [6]Logistics
    4. [7]Next meeting
    5. [8]Chair
    6. [9]Deliverables and Resources

Meeting minutes

  Agenda

   [10]Agenda for today

     [10] https://www.w3.org/WoT/IG/wiki/WoT-NGSI-LD#November_11,_2024


   McCool: we should talk about the next meeting too

   Kaz: btw, for today, I can take notes

   McCool: tx. should have a scribe list too
   … also should clarify who/how to chair the call too

  Minutes

   [11]Oct-28

     [11] https://www.w3.org/2024/10/28-ngsi-minutes.html


   McCool: (skims the minutes)
   … several typos, e.g., "ThingModel" to be split

   (fixed)

   (approved)

  Logistics

   [12]GitHub repo

     [12] https://github.com/w3c/wot-ngsi-ld


   [13]Wiki page

     [13] https://www.w3.org/WoT/IG/wiki/WoT-NGSI-LD


   [14]IRC channel

     [14] https://irc.w3.org/?channels=wot-ngsi-ld


   McCool: have created a dedicated GitHub repo, Wiki page and IRC
   channel for this liaison
   … also the W3C Liaison table has been updated

   [15]Liaison table

     [15] https://www.w3.org/liaisons/#ETSI


   Kaz: yes, updated with the liaison contacts

  Next meeting

   McCool: in two weeks, we'll have a F2F meeting in Munich
   … so would cancel the NGSI liaison call
   … the next meeting after that will be Dec 9
   … what about the timezone?

   Kaz: for the liaison discussion during WoT Week?

   McCool: would have presentation from ETSI during the WoT Week
   meeting
   … would expect a slot of half an hour or so

   Franck: F2F?

   McCool: can join the meeting remotely as well
   … a Zoom call will be available
   … the date will be Thursday/Friday

   (Nov 28-29)

   McCool: let's clarify the timezone

   Franck: located in Munich. Thursday after 4pm
   … Friday is OK. no constraints and can accommodate

   mb: all day Thursday
   … not 2-3pm on Friday

   McCool: would expect a 30min slot
   … including 15min presentation and 15min discussion

   McCool: (then shows the WoT Week wiki)

   [16]WoT Week wiki

     [16] https://www.w3.org/WoT/IG/wiki/Wiki_for_WoT_Week_2024_planning


   McCool: regarding the liaison call, let's cancel the call
   … (put "Cancelled") on the NGSI-LD wiki

   [17]Nov-25

     [17] https://www.w3.org/WoT/IG/wiki/WoT-NGSI-LD#November_25,_2024


   McCool: regarding the time for the presentation during WoT
   Week, we'll finalize the time on Wednesday (during the Plugfest
   call)

  Chair

   McCool: is anybody from you interested in chairing the call?

   Kaz: given the mechanism of W3C calls is a bit complicated, I'd
   suggest we continue to ask you, McCool, to chair the call :)

   McCool: ok

  Deliverables and Resources

   [18]wot PR 1209 - Activate Liaison for ETSI ISG CIM for NGSI-LD

     [18] https://github.com/w3c/wot/pull/1209


   McCool: got a comment from Ege Korkan (from Siemens)

   [19]Rendered MD

     [19] https://github.com/w3c/wot/blob/b7a0578b4490a088e6caf25ad4bb0f6f3d610acc/liaisons/etsi/isg-cim-ngsi-ld.md


   McCool: (adds some edits directly)
   … we don't usually say "Things Descriptions"
   … should be "Thing Description"
   … Thing Model describes some class of devices
   … if NGSI-LD behaves as a broker, it's kind of similar to the
   WoT Thing Directory
   … so it's not just about Binding Templates

   mb: not 100% sure...
   … TD basically can describe how the NGSI-LD can work with it

   McCool: NGSI-LD itself is still a REST API
   … here the description is a bit vague

   Franck: there were two bullet points there
   … and those points have been consolidated as a possible
   deliverable

   Juanjo: the first point is describing what W3C could publish
   … while the second point describes the deliverable by the ETSI
   side
   … WoT Thing Model describes how a Thing Description can be
   derived to describe a device

   McCool: the idea here is what the Consumers of WoT would be
   like, e.g., for Smart Cities
   … I actually like the first part here

   Juanjo: considering NGSI-LD as a form to handle devices
   … a possible context broker could access NGSI-LD

   McCool: should extend NGSI-LD by some standard protocol
   … NGSI-LD broker needs to generate WoT Thing Description to
   consume a Thing

   Juanjo: WoT Thing Description can be adopted
   … then the NGSI-LD broker will handle actual devices
   … using the WoT Thing Model mechanism

   McCool: NGSI-LD is a proxy?
   … Things have to be devices
   … this idea itself is correct, but need clarification
   … could do something like this...

   Kaz: two comments
   … 1. for today, we should add two sub sections, (1) expectation
   for W3C and (2) expectation for ETSI
   … 2. we should invite the ETSI guys to the WoT Week meeting not
   only for the presentation but also for some more detailed
   discussion about our expectations for the possible deliverables
   … probably, we should clarify some concrete use cases and also
   drawing a basic diagram of expected devices and applications
   (and brokers) would be helpful

   Franck: adding information to the "Scope" section also would
   make sense

   McCool: (adds "W3C WoT WG to develop..." and "ETSI ISG CIM to
   develop..." to the Scope section)
   … W3C: NGSILD Binding that defines what infrmation is needed in
   a Thing Description to communicate with an NGSI-LD Context
   Broker.

   Juanjo: not really sure about that
   … Thing Description is a paper which describes Thing's
   capability
   … Context Broker accesses Things and Entities.

   McCool: think we're on the same page...
   … WoT Consumer can read the Thing Description and handle the
   Thing
   … we can leave out the "Alternatives" description within the
   "Delverables" section
   … on the other hand, we can add clarification to the scope of
   the ETSI work
   … describing how to use a WoT Thing Description for NGSI-LD
   model descriptions

   Juanjo: don't know how we should express that...

   Franck: (give comments on ETSI's deliverable)

   McCool: Extend ETSI GR-055 or another document to include the
   use of WoT Thing Description for NGSI-LD model description

   Juanjo: would see what is needed for the compatibility

   McCool: extend existing specifications?

   Juanjo: two things

   Juanjo: 1. we'll extend the specifications

   Juanjo: currently, some activity is ongoing
   … then 2. understand how the WoT Thing Model can be used to
   rebase the NGSI-LD based systems

   <TallTed> Outside (but maybe inside?) observation -- acronyms
   need expansion, at least for first use, at least at top of
   [20]https://www.w3.org/WoT/IG/wiki/WoT-NGSI-LD and [21]w3c/
   wot-ngsi-ld. At *minimum*, "NGSI-LD" needs expansion.

     [20] https://www.w3.org/WoT/IG/wiki/WoT-NGSI-LD

     [21] https://github.com/w3c/wot-ngsi-ld.


   McCool: let's see we can nail down what we expect
   … maybe you can fill into the "Gaps" section with your expected
   gaps

   Kaz: NGSI-LD and WoT Thing Description are similar to each
   other
   … but it seems we have a bit different views and are using a
   bit different terminology to describe our expectations
   … so would suggest we clarify our expectations based on some
   concrete use case including (1) Things and Consumers from the
   WoT side and (2) Context Brokers and Devices

   McCool: that's possible but the "Simple Liaison" document
   should describe our high-level expectations for the liaison

   Kaz: if we really want to focus on the high-level expectations,
   we should not dive into the details of the mechanism but should
   simply clarify expected document on the W3C side and the ETSI
   side
   … I think we can merge this PR 1209 itself with keeping the
   "DRAFT" title and then continue that high-level discussion
   based on the resulted MD

   McCool: that's possible but this PR 209 moves the liaison
   target document from the "proposals" area to the "liaison" area

   Kaz: given the discussion today, we should rather keep the
   draft document under the "proposals" area with the title of
   "DRAFT" then

   McCool: we're out of time, so let's continue the discussion
   next time

   [adjourned]


    Minutes manually created (not a transcript), formatted by
    [22]scribe.perl version 238 (Fri Oct 18 20:51:13 2024 UTC).

     [22] https://w3c.github.io/scribe2/scribedoc.html

Received on Monday, 11 November 2024 17:04:21 UTC