ETSI EN 302 637-2: Cooperative Awareness in Intelligent Transport Systems

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"ETSI EN 302 637-2 V1.3.2 (2014-11)" 是一个欧洲电信标准协会（ETSI）发布的智能交通系统（ITS）车辆通信的基本应用规范，特别是针对合作意识基本服务的详细规定。这篇文档是智能交通系统（ITS）标准的一部分，旨在提升道路交通的安全性和效率。"Vehicular Communications" 描述了车对车（V2V）和车对基础设施（V2I）的通信技术，这是实现自动驾驶和智能交通网络的关键部分。"Basic Set of Applications" 涵盖了这些通信技术的核心功能和服务，确保车辆能够实时交换信息，提高道路安全和交通流畅性。 "Part 2: Specification of Cooperative Awareness Basic Service" 部分详细阐述了如何通过无线通信技术，如ITS-G5（基于IEEE 802.11p的专用短程通信DSRC）和C-ITS（连接车辆信息服务），实现车辆间的合作感知。这种服务让车辆可以分享位置、速度、方向等信息，从而预警潜在的危险情况，例如碰撞风险、交通堵塞或恶劣天气。文档中的关键词 "application, ITS, safety, service, transport" 强调了这些技术的应用领域，主要关注交通安全和服务的提供。ETSIE-650 Routedes Lucioles 是ETSI的地址，表明此标准由法国尼斯附近的ETSI发布。该标准的版本号 "V1.3.2 (2014-11)" 表示这是2014年11月的第3次修订版，可能包含了之前版本的改进和更新。用户需要注意，只有经过ETSI授权，才能修改任何电子版或打印版的内容，而最终的权威版本通常是以PDF格式存储在ETSI内部网络驱动器上的。 ETSI EN 302 637-2 V1.3.2 (2014-11) 是智能交通系统领域的核心标准之一，对于推动车联网技术的发展和应用至关重要，尤其在欧洲地区。它定义了车辆间通信的基本服务，对于实现智能交通网络的安全、高效运行具有深远影响。

ETSI

EN 302 637

2 V1.3.2 (2014

11)

1 Scope

The present document provides the specifications of the Cooperative Awareness basic service (CA basic service), which

is in support of the BSA road safety application.

This includes definition of the syntax and semantics of the Cooperative Awareness Message (CAM) and detailed

specifications on the message handling.

2 References

References are either specific (identified by date of publication and/or edition number or version number) or

non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the

reference document (including any amendments) applies.

Referenced documents which are not found to be publicly available in the expected location might be found at

http://docbox.etsi.org/Reference

NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee

their long term validity.

2.1 Normative references

The following referenced documents are necessary for the application of the present document.

[1] ETSI EN 302 665 (V1.1.1): "Intelligent Transport Systems (ITS); Communications Architecture".

[2] ETSI TS 102 894-2 (V1.2.1): "Intelligent Transport Systems (ITS); Users and applications

requirements; Part 2: Applications and facilities layer common data dictionary".

[3] SAE J2735 (2009-11-19): "Dedicated Short Range Communications (DSRC) Message Set

Dictionary".

NOTE: Available at http://standards.sae.org/j2735_200911/

[4] Recommendation ITU-T X.691/ISO/IEC 8825-2 (1997-12): "Information technology - ASN.1

encoding rules: Specification of Packed Encoding Rules (PER)".

[5] ETSI EN 302 663 (V1.2.1): "Intelligent Transport Systems (ITS); Access layer specification for

Intelligent Transport Systems operating in the 5 GHz frequency band".

2.2 Informative references

The following referenced documents are not necessary for the application of the present document but they assist the

user with regard to a particular subject area.

[i.1] ETSI TR 102 638 (V1.1.1) (2009-06): "Intelligent Transport Systems (ITS); Vehicular

Communications; Basic Set of Applications; Definitions".

[i.2] Car2Car Communication Consortium (2007-08): "Car2Car Communication Consortium

Manifesto", Version 1.1.

NOTE: Available at http://www.car-to-car.org/

[i.3] ETSI TR 102 863 (V1.1.1) (2011-06): "Intelligent Transport Systems (ITS); Vehicular

Communications; Basic Set of Applications; Local Dynamic Map (LDM); Rationale for and

guidance on standardization".

[i.4] ETSI TS 102 636-3 (V1.1.1): "Intelligent Transport Systems (ITS); Vehicular Communications;

GeoNetworking; Part 3: Network architecture".

ETSI

ETSI EN 302 637

2 V1.3.2 (2014

11)

[i.5] ETSI EN 302 636-4-1 (V1.2.1): "Intelligent Transport Systems (ITS); Vehicular Communications;

GeoNetworking; Part 4: Geographical addressing and forwarding for point-to-point and point-to-

multipoint communications; Sub-part 1: Media-Independent Functionality".

[i.6] ETSI TS 102 894-1 (V1.1.1): "Intelligent Transport System (ITS); Users & Applications

requirements; "Intelligent Transport Systems (ITS); Users and applications requirements;

Part 1: Facility layer structure, functional requirements and specifications".

[i.7] ETSI EN 302 636-5-1 (V1.2.1): "Intelligent Transport Systems (ITS); Vehicular Communications;

GeoNetworking; Part 5: Transport Protocols; Sub-part 1: Basic Transport Protocol".

[i.8] ETSI TS 101 539-1 (V1.1.1): "Intelligent Transport Systems (ITS); V2X Applications;

Part 1: Road Hazard Signalling (RHS) application requirements specification".

[i.9] ETSI TS 101 539-2: "Intelligent Transport System (ITS); V2X Applications; Part 2: Intersection

Collision Risk Warning (ICRW) application requirements specification".

[i.10] ETSI TS 101 539-3 (V1.1.1): "Intelligent Transport Systems (ITS); V2X Applications;

Part 3: Longitudinal Collision Risk Warning (LCRW) application requirements specification".

[i.11] ETSI TS 102 723-5: "Intelligent Transport Systems (ITS); OSI cross-layer topics; Part 5: Interface

between management entity and facilities layer".

[i.12] ETSI TS 102 723-9: "Intelligent Transport Systems; OSI cross-layer topics; Part 9: Interface

between security entity and facilities layer".

[i.13] ETSI TS 102 723-11: "Intelligent Transport Systems (ITS); OSI cross-layer topics;

Part 11: Interface between networking and transport layer and facilities layer".

[i.14] ETSI TS 102 890-3: "Intelligent Transport System (ITS); Facilities layer function; Part 3: Position

and time facility specification".

[i.15] ISO EN 17419: "Intelligent Transport Systems -- Cooperative Systems -- Classification and

management of ITS applications in a global context".

[i.16] ETSI TS 102 724 (V1.1.1): "Intelligent Transport Systems (ITS); Harmonized Channel

Specifications for Intelligent Transport Systems operating in the 5 GHz frequency band".

[i.17] ETSI TS 103 097 (V1.1.1): "Intelligent Transport Systems (ITS); Security; Security header and

certificate formats".

[i.18] ETSI TR 102 965 (V1.1.1): "Intelligent Transport Systems (ITS);Application Object Identifier

(ITS-AID); Registration list".

[i.19] ISO 1176: "Road vehicles - Masses - Vocabulary and codes".

3 Definitions, symbols and abbreviations

3.1 Definitions

For the purposes of the present document, the terms and definitions given in ETSI EN 302 665 [1], ETSI

EN 302 663 [5], LDM given in ETSI TR 102 863 [i.3] and DE and DF given in SAE J2735 [3] and the following apply:

basic set of applications: group of applications, supported by vehicular communication system

NOTE: The basic set of applications are defined in ETSI TR 102 638 [i.1].

Cooperative Awareness (CA) basic service:

facility at the ITS-S facilities layer to generate, receive and process the

CAM

Cooperative Awareness Message (CAM): CA basic service PDU

Cooperative Awareness Message (CAM) data: partial or complete CAM payload

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