Industry Specification Group (ISG) cross-cutting Context Information Management (CIM) Activity Report 2021

Chair: Lindsay Frost, NEC Europe

Developing specifications for applications to publish, discover, update and access context information for smart cities, smart agriculture, digital twins and other areas.

Digital transformation – from smart cities and smart manufacturing to machine learning and AI – requires interoperable and reliable sharing of information, together with its provenance, information regarding its accuracy and unambiguous definitions of its content.

The primary responsibilities of ETSI’s Industry Specification Group on cross-cutting Context Information Management (ISG CIM) are to:

  • develop technical specifications for publishing, accessing and updating contextual information, integrating information from IoT, legacy databases and third-party applications;
  • develop technical specifications and reports that enable development of interoperable software implementations of a cross-cutting Context Information Management (CIM) Layer using a RESTful interface called the NGSI-LD API, thus aiming to bridge the gap between abstract standards and concrete implementations;
  • define and maintain the NGSI-LD API that enables close to real-time update/access to information from many different sources (not limited to IoT);
  • enable applications to register context providers, update context, get actual and historic context information, to subscribe for notifications on context changes;
  • identify appropriate ontologies and data publishing platforms;
  • promote the NGSI-LD API as a tool and engage with ETSI, oneM2M, IoT and Open Data communities to improve interoperability at the semantic and context layers.

ISG CIM activities of note during 2021 have included:

  • Progress on these deliverables:
  • Group Specification (GS) CIM 006 V1.2.1 “NGSI-LD Info Model”
  • Group Report (GR) CIM 007 V1.1.1 “CIM Security and Privacy (SEC)” (publication anticipated February ‘22)
  • Group Report CIM 010 V1.1.1 “NGSI-LD Interworking”
  • Group Report CIM 017 V1.1.1 “NGSI-LD for Digital Twins”
  • Publication of incremental release versions of NGSI-LD API, drawing on feedback from developers, end users and stakeholders:
  • GS CIM 009 V1.4.1 in Feb ’21
  • GS CIM 009 V1.4.2 in April ’21
  • GS CIM 009 V1.5.1 in November ’21
  • Publication of six deliverables for TTF 004 on NGSI-LD testing:
  • GR CIM 011“NGSI-LD Testing Framework TPDL D1-2)” in April ’21
  • GS CIM 012 “NGSI-LD Test Suite Structure D2” in March ’21
  • GS CIM 013  “NGSI-LD Test Purposes Descriptions D3” in May ’21
  • GS CIM 014 “NGSI-LD Test Suite D4” in April ’21
  • GR CIM 015 “NGSI-LD Testing Environment Validation D5” in June ’21
  • GS CIM 016  “NGSI-LD Testing Framework Test Template D1-1” in April ’21
  • Created five new Work Items (September ‘21) for the STF 627 proposal (for 2022) on Data-handling improvement:
  • DGR/CIM-0018 “Enabling chain of trust from Content Sources to Content Consumers”
  • DGS/CIM-0019 “Handling of provenance information in NGSI-LD”
  • DGR/CIM-0020 “Guidelines for the deployment of Smart City and Communities data platforms”
  • DGR/CIM-0021 “Usage of external data models with NGSI-LD API”
  • DGR/CIM-0022 “NGSI-LD/oneM2M interworking proxy proposal
  • Created two further new Work Items (November ‘21):
  • DGR/CIM-0023 “Case Study of NGSI-LD Adoptions”
  • DGR/CIM-0024 “Study of NGSI-LD Architecture Deployment Scenarios”

See a list and descriptions of current ISG CIM Work Items in development here.

More information is available at https://docbox.etsi.org/ISG/CIM/Open. ISG CIM has a policy of openly publishing intermediate material (as soon as consensus is reached) to enhance feedback. There is a general status report available at that open area, called NGSI_Status.pdf.  Where possible, the material is also presented at public technical events to engage with the community.

The committee continued to liaise with external organizations including TTA, OMA (OMA SpecWorks since 2018 after joining IPSO Alliance), TM Forum, W3C, OGC and ITU-T (e.g., SG20). 

By the end of 2021 ISG CIM membership stood at 35 organizations: 24 Members, 11 Participants and 1 Counsellor (EC).