Main WoT WebConf/Liaisons

Liaisons

Status of engagements with external standards organizations.

OPC UA

• Issue for gathering collab requirements: https://github.com/w3c/wot/issues/1016
• Joint meeting planned for July 1
  • Logistics: https://www.w3.org/events/meetings/12b636a2-d435-4752-bd77-6fde10d1b74e
  • Planed slides for presentation: https://github.com/w3c/wot/blob/main/liaisons/opcf/2022-07-01-OPC-UA-WOT-Pre-Meeting.pdf
• PR for technical objectives: https://github.com/w3c/wot/pull/1020
• Met with Jeff about the next steps on the OPC UA liaison on March 24
  • minutes (Member-only)
  • need to clarify the technical details on our expectations
  • need to have further informal discussions with OPC representatives too
  • Requirements discussion based on the current use case and proposed WoT/OPC UA technical requirements
• Next Steps
  • OPC UA PlugFest participation (similar to ECHONET)
  • OPC UA Binding
    • Will be developed by OPC UA WG, registered in WoT Binding registry
    • OPC UA is currently reviewing draft of spec for consuming TDs (onboarding)
    • Next: specification for producing TDs (exposing)

ITU-T SG20

• Next steps
  • ITU-T wants to "... focus on ontologies, digital twin and AI related aspects in the smart city context."
  • Plan to develop a document on a new smart cities ontology as an initial step.
  • Gyu Myoung Lee shared slides from WF-IoT
  • Next SG20 mtg is 19-28 July 2022; need further followup before then
  • We have proposed Gyu Myoung Lee joining a near-future main call for a 15 discussion

ECHONET

• Next steps:
  • Clearly define concrete use cases and technical requirements for ECHONET/WoT Binding
  • Gap analysis: Identify missing features needed in WoT-next (to be covered in next charter)
  • Initial discussion to be done within the WoT-JP CG while we (WoT-WG/IG) are concentrating on spec finalization.

IEC CDD (Common Data Dictionary)

• Ontologies for various industries - IEC61360, IEC62656
  • Units are a current topic of discussion, relevant to Profiles
• Previous contacts with ISO TC184/SC4:
  • need clarification on how to refer to their ontologies from TD
  • some specific examples would be useful
  • parts are also used as upper ontology for ECLASS, so we will pick up a few things if we start with ECLASS
• New contact with current IEC SC 3D - talking about how to proceed
  • They'd like to start with collaboration with the WoT-JP CG and bring feedback/input to the WoT-WG later.
  • Kaz will join their meeting on July 22 to confirm the next steps.
  • They already have liaison with ISO TC184/SC4 and ECLASS.

ECLASS

• overlap with IEC discussion (see above)
• need clarification on how to refer to their ontologies from TD
• also a question about ECLASS logo on the WoT web page --> we have to ok for doing so
• an example was given during the F2F that used ECLASS for Thing metadata, but there may be other use cases for interaction annotation; to be discussed

T2TRG/IETF

• May 5 - [link Digital Twin Meeting]
• Presentation given March 10
  • https://github.com/t2trg/2022-03-summary
  • Led to new DDOS security consideration for Discovery

OGC/OpenAR - Geospatial Data

• Overlap in collaboration with Spatial Data on the Web IG
• some discussion during the Use Cases call on Jan-25
• Continue the discussion in Use Cases call

Microsoft DTDL

• resources
• Joint discussion with Microsoft DTDL on Tuesday, June 21
  • Minutes
  • Next steps:
    • Another meeting in about month, in UC slot: July 19
    • Agenda:
      • Goal is interconversion
      • need test plugfest project
      • need mapping of features, identification of gaps in our specs (both TD and Discovery), vocabulary

IEEE P2874

• IEEE P2874 - Spatial Web Protocol, Architecture, and Governance Working Group
• Next meeting 29 June
• Need to follow up on June 1 meeting

ISO

• Activity related to Grundfos input to WoT CG
• Coordination of ontologies
  • Mikkel Haggren Brynildsen (Presenter)
  • Group etc.: https://www.iso.org/standard/87560.html?browse=tc

Possible

• ASHRAE (BACnet)
  • No formal liaison, but we are working on a BACnet binding.
• Brick
• OneM2M
• GaiaX
• Solid CG
• EdgeX Foundry
• Home Assistant
• CSA/Matter (formerly Zigbee Alliance/CHIP)
  • Intel is now a member, McCool reviewing draft documents
  • could just review Zigbee simple liaison