ISO 22418:2020 pdf download

ISO 22418:2020 pdf download.Intelligent transport systems — Fast service announcement protocol (FSAP) for general purposes in ITS
1 Scope
This document specifies the fast service announcement protocol (FSAP) for general purposes in ITS. It references and supports all features of ISO/TS 16460, especially supporting the service response message (SRM) and related features in addition to the service announcement message (SAM), which enables only very basic features. FSAP supports locally advertised ITS services uniquely identified by an ITS application identifier (ITS-AID). This document specifies message formats and related basic protocol procedures by reference to ISO/TS 16460, and further related protocol requirements for operation of FSAP in the context of an ITS station specified in ISO 21217. This document illustrates its relations to service announcement protocols specified by ETSI TC ITS and IEEE.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO/IEC 8825-2, Information technology — ASN.1 encoding rules: Specification of Packed Encoding Rules (PER) — Part 2
ISO/IEC 8825-7, Information technology — ASN.1 encoding rules — Part 7: Specification of Octet Encoding Rules (OER)
ISO/TS 16460, Intelligent transport systems — Communications access for land mobiles (CALM) —Communication protocol messages for global usage
ISO 17419, Intelligent transport systems — Cooperative systems — Globally unique identification
ISO 17423, Intelligent transport systems — Cooperative systems — Application requirements and objectives
ISO 21217, Intelligent transport systems — Communications access for land mobiles (CALM) — Architecture
ISO 29281-1, Intelligent transport systems — Localized communications — Part 1: Fast networking & transport layer protocol (FNTP)
ISO 24102-3, Intelligent transport systems — ITS station management — Part 3: Service access points
ISO 24102-4, Intelligent transport systems — ITS station management — Part 4: Station-internal management communications
ISO 24102-6, Intelligent transport systems — Communications access for land mobiles (CALM) — ITS station management — Part 6: Path and flow management
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 21217 apply.
6.4.1 Overview
In order to allow an ITS-SU to offer an ITS service to another ITS-SU by means of an application session, a service initialization phase (SrvIniP) is performed by the FSAP, where the SrvIniP is based on localized communication, e.g. applying the FNTP networking & transport layer protocol specified in ISO 29281-1. After initialization, the application session is performed during the service operation phase (SrvOpP), where the SrvOpP may be based on either localized communication or networking, e.g. IPv6 communication, over any kind of access technology. During SrvIniP, handover to another protocol stack, e.g. another access technology and IPv6, may be demanded. The real-time SrvIniP procedures are preferably implemented in an ITS-S router. NOTE The specification of SrvOpP is outside the scope of this document.