WG 4 - ISO/IEC JTC 1/SC 41/WG 4

ISO/IEC 30181:2024 specifies functional requirements and architecture about the following items for resource interoperability among heterogeneous IoT platforms through the conversion of resource identifiers (IDs) and paths (e.g. uniform resource identifier (URI)):
– requirements for interoperability of resource IDs in the heterogeneous IoT platforms;
– functional architecture for converting IDs and paths of resources on heterogeneous IoT platforms; and,
– functional architecture for mapping and managing resource IDs among heterogeneous IoT platforms.

ISO/IEC 30161-2:2023 specifies the following items for the transport interoperability between nodal points in the IoT data exchange platform (IoT DEP):
– requirements;
– functional blocks;
– operation mechanism.

ISO/IEC 21823-4:2022 specifies the IoT interoperability from a syntactic point of view. In ISO/IEC 21823-1: Framework [2], five facets are described for IoT interoperability, i.e. transport, semantic, syntactic, behavioural and policy. In this document, the following specifications for IoT interoperability from syntactic viewpoint are included;
– A principle of how to achieve syntactic interoperability among IoT systems which include IoT devices
– Requirements on information related to IoT devices for syntactic interoperability
– A framework for processes on developing information exchange rules related to IoT devices from the syntactic viewpoint

ISO/IEC 21823-3:2021 provides the basic concepts for IoT systems semantic interoperability, as described in the facet model of ISO/IEC 21823-1, including:
– requirements of the core ontologies for semantic interoperability;
– best practices and guidance on how to use ontologies and to develop domain-specific applications, including the need to allow for extensibility and connection to external ontologies;
– cross-domain specification and formalization of ontologies to provide harmonized utilization of existing ontologies;
– relevant IoT ontologies along with comparative study of the characteristics and approaches in terms of modularity, extensibility, reusability, scalability, interoperability with upper ontologies, and so on, and;
– use cases and service scenarios that exhibit necessities and requirements of semantic interoperability.

ISO/IEC 30161-1:2020(E) specifies requirements for an Internet of Things (IoT) data exchange platform for various services in the technology areas of:
• the middleware components of communication networks allowing the co-existence of IoT services with legacy services;
• the end-points performance across the communication networks among the IoT and legacy services;
• the IoT specific functions and functionalities allowing the efficient deployment of IoT services;
• the IoT service communication networks’ framework and infrastructure; and
• the IoT service implementation guideline for the IoT data exchange platform

IEC 21823-2:2020 (E) specifies a framework and requirements for transport interoperability, in order to enable the construction of IoT systems with information exchange, peer-to-peer connectivity and seamless communication both between different IoT systems and also among entities within an IoT system. This document specifies: • transport interoperability interfaces and requirements between IoT systems; • transport interoperability interfaces and requirements within an IoT system

ISO/IEC 21823-1:2019(E) provides an overview of interoperability as it applies to IoT systems and a framework for interoperability for IoT systems. This document enables IoT systems to be built in such a way that the entities of the IoT system are able to exchange information and mutually use the information in an efficient way. This document enables peer-to-peer interoperability between separate IoT systems. This document provides a common understanding of interoperability as it applies to IoT systems and the various entities within them.

ISO/IEC 30140-4:2018 The ISO/IEC 30140 series provides general requirements, reference architecture and high-level interface guidelines supporting interoperability among underwater acoustic sensor networks (UWASNs). Part 4 provides information on interoperability requirements among entities within a UWASN and among various UWASNs.