ISO 16460:2021 高度道路交通システム—ローカライズされた通信—グローバルに使用するための通信プロトコルメッセージ | ページ 2

Foreword

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This document was prepared by Technical Committee ISO/TC 204, Intelligent transport systems.

This first edition cancels and replaces the first edition (ISO/TS 16460:2016), which has been technically revised.

The main changes compared to the previous edition are as follows:

• editorial improvements;
• editorial corrections.

Introduction

This document belongs to a set of International Standards for Intelligent Transport Systems (ITS) and Cooperative ITS (C-ITS). An introduction to this set of International Standards is provided in ISO 21217.

Localized communications, i.e. communications without networking through nodes, and service advertisement are essential protocol functionalities in C-ITS. ISO and IEEE developed protocols with similar functionality, i.e. the

• ISO Fast Networking & Transport Protocol (FNTP) standardized in ISO 29281-1;
• IEEE WAVE Short Message Protocol (WSMP) standardized in IEEE 1609.3^[15],
• ISO Fast Service Advertisement Protocol (FSAP) standardized in ISO 24102-5,
• IEEE WAVE Service Advertisement (WSA) standardized in IEEE 1609.3^[15],

where ISO considered the architectural context of an ITS station specified in ISO 21217:2014, and IEEE considered the architectural context of a WAVE device specified in IEEE 1609.0^[13].

Although initial versions of these protocols from ISO and IEEE are very similar, there are differences in details of the message formats and the functionality. These differences were identified by the EU/US task force HTG 3, from which a recommendation resulted to harmonize the protocols^[20].

The result of harmonization of FNTP with WSMP, and of FSAP with WSA is presented in this document, distinguishing interoperability modes, and enhanced features specified in this document.

With reference to this document, the initial editions of ISO 29281-1 and IEEE 1609.3 were revised, and ISO 24102-5 was converted into EN ISO 22418, enabling global interoperability of equipment designed for different architectures. Finally, ETSI developed EN 302 890-1 (a further service announcement protocol profile) with reference to the previous edition of this document, i.e. ISO/TS 16460:2016.

1 Scope

This document specifies:

• the Localized Message (LM) format: an NPDU of a networking & transport layer protocol that does not support routing of a packet through a network;
• the Service Advertisement Message (SAM): an APDU to be transported in an LM, for example;
• the Service Response Message (SRM): an APDU acknowledging a SAM that offered a service based on an ITS application class^[2] to be transported in an LM, for example;
• related basic requirements for procedures.

Specifications are partly made by normative references to IEEE 1609.3(TM)-2016.

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.

3 Terms and definitions

No terms and definitions are listed in this document.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

Bibliography