Overview
ISO 25113:2010 - "Intelligent transport systems - Communications access for land mobiles (CALM) - Mobile wireless broadband using HC‑SDMA" - defines how CALM (Communications Access for Land Mobiles) systems use the ATIS HC‑SDMA air interface (ATIS 0700004‑2005, recommended by ITU‑R M.1801). The standard selects CALM options for mobile wireless broadband (MWB) and specifies management‑interface requirements to support quasi‑continuous, prolonged and short packet‑based communications for vehicle‑to‑infrastructure (V2I), vehicle‑to‑vehicle (V2V), and mobile equipment to fixed points.
Key topics and requirements
- Scope and conformance
- Requires compliance with local ATIS HC‑SDMA procedures and CALM architecture standards.
- Mandates interaction with CALM IPv6 networking, medium service access points and CALM management layers.
- CALM architecture & IPv6
- Operates within the CALM system architecture (media‑independent handover/MIH) and CALM IPv6 networking for IP connectivity.
- Session types
- Defines procedures for User‑Controlled, Continuous and Time‑Controlled sessions (referencing ISO 25111).
- Interface and medium management
- Medium Access Control (MAC)
- MAC behavior and requirements are aligned with ISO 25111.
- HC‑SDMA MMAE service primitives
- Specifies the Medium Management Adaptation Entity (MMAE) primitives used between CALM and HC‑SDMA:
- MMAE‑SetParam.request / confirm - control actions (e.g., connect/disconnect).
- MMAE‑GetParam.request / confirm - query interface status and characteristics.
- MMAE‑Notify.indication - status notifications (connected/disconnected).
- Defines parameter fields (interfaceId, paramNumber, ifStatus, ifChar, result codes).
- Testing, labelling and IPR
- Includes test/conformance requirements and intellectual property declaration expectations.
Practical applications and users
ISO 25113:2010 is targeted at organizations building or deploying ITS communications that require high‑capacity mobile broadband over HC‑SDMA:
- Automotive OEMs and telematics module manufacturers implementing CALM‑compliant radios
- Wireless equipment vendors integrating ATIS HC‑SDMA air interfaces
- ITS system integrators and network operators enabling V2I, V2V, infotainment, video downloads, probe‑data collection, and traffic management
- Test laboratories and certification bodies validating CALM/HC‑SDMA conformance
- Regulators and planners assessing interoperability for ITS deployments
Note: application‑specific upper layers (e.g., ITS service protocols) are out of scope and driven by other application standards.
Related standards
- ISO 21217 - CALM architecture
- ISO 21210 - CALM IPv6 Networking
- ISO 21218 - CALM medium service access points
- ISO 24102 - CALM management
- ISO 25111 - CALM using public networks
- ATIS 0700004‑2005 - HC‑SDMA radio interface
- ITU‑R M.1801 - broadband wireless access radio interface recommendations
Keywords: ISO 25113:2010, CALM, HC‑SDMA, mobile wireless broadband, ITS, ATIS 0700004‑2005, MMAE, IPv6, medium access control, V2I, V2V.