ISO 29282:2011

Overview - ISO 29282:2011 (CALM - Satellite networks)

ISO 29282:2011 is an ITS (Intelligent Transport Systems) standard that specifies how bi‑directional satellite communications are integrated into the CALM (Communications Access for Land Mobiles) environment. It provides the definitions and procedures for establishing, maintaining and terminating CALM communication sessions over satellite links and defines the role and operation of the Medium Management Adaptation Entity (MMAE) - the management interface that sits between proprietary satellite media and the CALM ITS station management. The standard enables ITS station management to monitor and control satellite media without requiring application-level knowledge of the satellite interface.

Key technical topics and requirements

• MMAE operation and interfaces: Defines how the MMAE reports medium status and accepts control from ITS station management via the MI‑SAP/IN‑SAP interfaces.
• Session lifecycle: Procedures for session establishment, maintenance, change of connection state and disconnection for satellite-specific CALM sessions.
• Medium access control (MAC): Satellite MAC aspects and the CALM satellite MMAE service primitives used to interact with MAC and lower layers.
• Support for multiple satellite topologies: Recognizes GEO, MEO and LEO differences and practical implications for availability, handover and coverage.
• Interworking and connectivity: Covers satellite networks that interconnect with public networks, Internet‑connected satellite services, and stand‑alone satellite capabilities.
• Conformance and testing: Requires compliance with CALM architecture, IPv6 networking, medium service access points and management standards (see Related Standards).
• Scope limitations: Peer‑to‑peer modes are supported; broadcast satellite services are covered separately by ISO 13183.

Practical applications and users

• Use cases: Vehicle‑to‑infrastructure and vehicle‑to‑vehicle communications where terrestrial coverage is absent or overloaded (e.g., emergency eCall/eMessage delivery, remote telemetry, fleet telematics, infill coverage).
• Who uses it:
  • ITS system architects and integrators designing multi‑media connectivity solutions.
  • Automotive telematics and OEM teams implementing CALM‑compliant satellite interfaces.
  • Satellite service providers and modem manufacturers creating MMAE‑compatible units.
  • Test laboratories and certification bodies validating CALM satellite conformance.
  • Public agencies and operators specifying reliable ITS communications across wide areas.

Related standards

• ISO 21217 - CALM Architecture
• ISO 21210 - CALM IPv6 Networking
• ISO 21218 - CALM Medium Service Access Points
• ISO 24102 - CALM Management (ITS station management)
• ISO 25111 - CALM requirements for using public networks
• ISO 13183 - Broadcast satellite interfaces (broadcast/paging)

Keywords: ISO 29282:2011, CALM satellite networks, MMAE, ITS station management, satellite communications for ITS, session establishment, IPv6 CALM, vehicle telematics.