1、 ETSI EN 302 637-2 V1.3.2 (2014-11) Intelligent Transport Systems (ITS); Vehicular Communications; Basic Set of Applications; Part 2: Specification of Cooperative Awareness Basic Service EUROPEAN STANDARD ETSI ETSI EN 302 637-2 V1.3.2 (2014-11) 2Reference REN/ITS-0010019 Keywords application, ITS, s
2、afety, service, transport ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice The present document
3、can be downloaded from: http:/www.etsi.org The present document may be made available in electronic versions and/or in print. The content of any electronic and/or print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any existing or
4、perceived difference in contents between such versions and/or in print, the only prevailing document is the print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to
5、revision or change of status. Information on the current status of this and other ETSI documents is available at http:/portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following services: http:/portal.etsi.org/chaircor/ETSI_suppo
6、rt.asp Copyright Notification No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as authorized by written permission of ETSI. The content of the PDF version shall not be modified without the written authorization o
7、f ETSI. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2014. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM and LTE are Trade
8、 Marks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI EN 302 637-2 V1.3.2 (2014-11) 3Contents Intellectual Property Rights 6g3Foreword . 6g3Modal verbs terminology
9、6g3Introduction 7g31 Scope 8g32 References 8g32.1 Normative references . 8g32.2 Informative references 8g33 Definitions, symbols and abbreviations . 9g33.1 Definitions 9g33.2 Symbols 10g33.3 Abbreviations . 10g34 CA basic service introduction 11g34.1 Background 11g34.2 Services provided by CA basic
10、service 11g34.3 Sending CAMs . 11g34.4 Receiving CAMs 11g35 CA basic service functional description . 12g35.1 CA basic service in the ITS architecture 12g35.2 CA basic service functional architecture 12g35.3 Interfaces of the CA basic service 13g35.3.1 Interface to ITS applications . 13g35.3.2 Inter
11、face to data provisioning facilities . 14g35.3.3 Interface to the Networking Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http:/ipr.etsi.org). Pursuant to t
12、he ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Fo
13、reword This European Standard (EN) has been produced by ETSI Technical Committee Intelligent Transport Systems (ITS). The present document is part 2 of a multi-part deliverable covering Vehicular Communications; Basic Set of Applications, as identified below: TS 102 637-1: “Functional Requirements“;
14、 EN 302 637-2: “Specification of Cooperative Awareness Basic Service“; EN 302 637-3: “Specifications of Decentralized Environmental Notification Basic Service“. The specification of the CA basic service was initially developed by the European Car-to-Car Communication Consortium, see Car2Car Communic
15、ation Consortium Manifesto i.2. The service was evaluated by several initiatives such as the C2C-CC demonstration in 2008, ETSI Plugtests events and European projects including PRE-DRIVE C2X, DRIVE C2X, SafeSpot, CVIS, CoVeL, eCoMove, SCORF and simTD. These evaluation efforts have provided feedback
16、to ETSI TC ITS. The present document replaces ETSI TS 102 637-2 in whole. It includes improvements and enhancements of the CA basic service specifications in ETSI TS 102 637-2 according to the feedback provided by the various initiatives. National transposition dates Date of adoption of this EN: 18
17、November 2014 Date of latest announcement of this EN (doa): 28 February 2015 Date of latest publication of new National Standard or endorsement of this EN (dop/e): 31 August 2015 Date of withdrawal of any conflicting National Standard (dow): 31 August 2016 Modal verbs terminology In the present docu
18、ment “shall“, “shall not“, “should“, “should not“, “may“, “may not“, “need“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI d
19、eliverables except when used in direct citation. ETSI ETSI EN 302 637-2 V1.3.2 (2014-11) 7Introduction Cooperative awareness within road traffic means that road users and roadside infrastructure are informed about each others position, dynamics and attributes. Road users are all kind of road vehicle
20、s like cars, trucks, motorcycles, bicycles or even pedestrians and roadside infrastructure equipment including road signs, traffic lights or barriers and gates. The awareness of each other is the basis for several road safety and traffic efficiency applications with many use cases as described in ET
21、SI TR 102 638 i.1. It is achieved by regular exchange of information among vehicles (V2V, in general all kind of road users) and between vehicles and road side infrastructure (V2I and I2V) based on wireless networks, called V2X network and as such is part of Intelligent Transport Systems (ITS). The
22、information to be exchanged for cooperative awareness is packed up in the periodically transmitted Cooperative Awareness Message (CAM). The construction, management and processing of CAMs is done by the Cooperative Awareness basic service (CA basic service), which is part of the facilities layer wit
23、hin the ITS communication architecture ETSI EN 302 665 1 supporting several ITS applications. The CA basic service is a mandatory facility for all kind of ITS-Stations (ITS-S), which take part in the road traffic (vehicle ITS-S, personal ITS-S, etc.). The present document focuses on the specificatio
24、ns for CAMs transmitted by all vehicle ITS-Ss participating in the V2X network. Nevertheless, the present document defines the CAM format with flexibility in order to be easily extendable for the support of other types of ITS-Ss or future ITS applications. The requirements on the performance of the
25、CA basic service, the content of the CAM and the quality of its data elements are derived from the Basic Set of Applications (BSA) as defined in ETSI TR 102 638 i.1 and in particular from the road safety applications as defined in ETSI TS 101 539-1 i.8, ETSI TS 101 539-2 i.9, and ETSI TS 101 539-3 i
26、.10. ETSI ETSI EN 302 637-2 V1.3.2 (2014-11) 81 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 Awaren
27、ess 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 la
28、test 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 public
29、ation, 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):
30、“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 Re
31、commendation 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 freq
32、uency 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 Communic
33、ations; 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 Communicat
34、ions; 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) 9i.5 ETSI EN
35、 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 T
36、ransport System (ITS); Users “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
37、 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 Applic
38、ations; 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 72
39、3-5: “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-
40、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 17
41、419: “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 frequenc
42、y 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 -
43、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
44、 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 Me
45、ssage (CAM): CA basic service PDU Cooperative Awareness Message (CAM) data: partial or complete CAM payload ETSI ETSI EN 302 637-2 V1.3.2 (2014-11) 10Cooperative Awareness Message (CAM) protocol: ITS facilities layer protocol that operates the CAM transmission and reception empty vehicle: complete v
46、ehicle kerb mass as defined in ISO 1176, clause 4.6 i.19 V2X: either vehicle to vehicle (V2V), or vehicle to infrastructure (V2I) and/or infrastructure to vehicle (I2V) 3.2 Symbols For the purposes of the present document, the following symbols apply: IF.CAM Interface between CAM basic service and L
47、DM or ITS application IF.FAC Interface between CAM basic service and other facilities layer entities IF.N it defines the time interval between two consecutive CAM generations. Considering the requirements as specified in ETSI TS 101 539-1 i.8, ETSI TS 101 539-2 i.9 or ETSI TS 101 539-3 i.10 the uppe
48、r and lower limits of the transmission interval are set as follows: The CAM generation interval shall not be inferior to T_GenCamMin = 100 ms. This corresponds to the CAM generation rate of 10 Hz. The CAM generation interval shall not be superior to T_GenCamMax = 1 000 ms. This corresponds to the CA
49、M generation rate of 1 Hz. Within these limits the CAM generation shall be triggered depending on the originating ITS-S dynamics and the channel congestion status. In case the dynamics of the originating ITS-S lead to a reduced CAM generation interval, this interval should be maintained for a number of consecutive CAMs. The conditions for triggering the CAM generation shall be checked repeatedly every T_CheckCamGen. T_CheckCamGen shall be equal to or less than T_GenCamMin. The parameter
