1、 ETSI EN 302 636-4-1 V1.2.1 (2014-07) 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 EUROPEAN STANDARD ETSI ETSI EN 302
2、 636-4-1 V1.2.1 (2014-07)2Reference REN/ITS-0030035 Keywords autonomic networking, ITS, network, safety 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
3、Sous-Prfecture de Grasse (06) N 7803/88 Important notice The present document 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 modifie
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6、nt to one of the following services: http:/portal.etsi.org/chaircor/ETSI_support.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 conten
7、t of the PDF version shall not be modified without the written authorization of 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 Mar
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9、Contents Intellectual Property Rights 7g3Foreword . 7g3Modal verbs terminology 7g3Introduction 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 Services
10、 provided by the GeoNetworking protocol . 11g35 Format convention 12g36 GeoNetworking address . 13g36.1 General . 13g36.2 GeoNetworking address format 13g36.3 Fields of the GeoNetworking address 13g37 Data structures 14g37.1 Location table . 14g37.1.1 General 14g37.1.2 Minimum data elements of a Loc
11、ation Table Entry 14g37.1.3 Maintenance of the Location Table 15g37.2 Local Position Vector . 15g37.2.1 General 15g37.2.2 Minimum data elements 15g37.2.3 Maintenance 15g37.3 Sequence number . 16g37.3.1 General 16g37.3.2 Maintenance 16g37.4 Location service packet buffer . 16g37.4.1 General 16g37.4.2
12、 Buffer size . 16g37.4.3 Maintenance 16g37.5 Forwarding packet buffer . 17g37.5.1 General 17g37.5.2 Buffer size . 17g37.5.3 Maintenance 17g38 GeoNetworking packet structure and formats 18g38.1 Overview 18g38.2 Packet structure 18g38.2.1 General 18g38.2.2 Overall packet structure 18g38.2.3 Maximum Tr
13、ansmit Unit 19g38.3 GeoNetworking header structure 19g38.4 GeoNetworking Secured Packet . 19g38.5 Position vector 20g38.5.1 Overview 20g38.5.2 Long Position Vector 20g38.5.2.1 Structure 20g3ETSI ETSI EN 302 636-4-1 V1.2.1 (2014-07)48.5.2.2 Fields . 20g38.5.3 Short Position Vector 21g38.5.3.1 Structu
14、re 21g38.5.3.2 Fields . 21g38.6 Basic Header 21g38.6.1 Composition of the Basic Header . 21g38.6.2 Fields of the Basic Header 22g38.6.3 Encoding of the NH field in the Basic Header . 22g38.6.4 Encoding of the LT field . 22g38.7 Common Header 23g38.7.1 Composition of the Common Header . 23g38.7.2 Fie
15、lds of the Common Header 24g38.7.3 Encoding of the NH field in the Common Header 24g38.7.4 Encoding of the HT and HST fields . 25g38.7.5 Encoding of the TC field 25g38.8 GeoNetworking packet header types 26g38.8.1 Overview 26g38.8.2 GUC packet header . 26g38.8.2.1 Composition of the GUC packet heade
16、r 26g38.8.2.2 Fields of the GUC packet header 27g38.8.3 TSB packet header 27g38.8.3.1 Composition of the TSB packet header . 27g38.8.3.2 Fields of the TSB packet header . 28g38.8.4 SHB packet header 28g38.8.4.1 Composition of the SHB packet header 28g38.8.4.2 Fields of the SHB packet header . 29g38.
17、8.5 GBC/GAC packet header 29g38.8.5.1 Composition of the GBC/GAC packet header 29g38.8.5.2 Fields of the GBC/GAC packet header . 30g38.8.6 BEACON packet header . 30g38.8.6.1 Composition of the BEACON packet header 30g38.8.6.2 Fields of the BEACON packet header 31g38.8.7 LS Request packet header . 31
18、g38.8.7.1 Composition of the LS Request packet header 31g38.8.7.2 Fields of the LS Request packet header 32g38.8.8 LS Reply packet header 32g38.8.8.1 Composition of the LS Reply packet header . 32g38.8.8.2 Fields of the LS Reply packet header 33g39 Protocol operation 33g39.1 General . 33g39.2 Networ
19、k management . 34g39.2.1 Address configuration . 34g39.2.1.1 General 34g39.2.1.2 Auto-address configuration . 34g39.2.1.3 Managed address configuration 34g39.2.1.3.1 Initial address configuration 34g39.2.1.3.2 Address update 34g39.2.1.4 Anonymous address configuration 35g39.2.1.5 Duplicate address d
20、etection . 35g39.2.2 Local position vector and time update 36g39.2.2.1 Overview. 36g39.2.2.2 Local Position Vector update 36g39.2.2.3 Time update. 36g39.2.3 Beaconing . 36g39.2.4 Location service 36g39.3 Packet handling 37g39.3.1 Overview 37g39.3.2 Basic Header field settings . 38g39.3.3 Basic Heade
21、r processing . 38g39.3.4 Common Header field settings 40g39.3.5 Common Header processing . 41g3ETSI ETSI EN 302 636-4-1 V1.2.1 (2014-07)59.3.6 Beacon packet handling 41g39.3.6.1 General 41g39.3.6.2 Source operations 41g39.3.6.3 Receiver operations. 42g39.3.7 Location service packet handling 43g39.3.
22、7.1 Source operations 43g39.3.7.1.1 Overview . 43g39.3.7.1.2 Source operation for initial LS Request . 43g39.3.7.1.3 Source operation for LS Request re-transmission . 44g39.3.7.1.4 Source operation for LS Reply 44g39.3.7.2 Forwarder operations 45g39.3.7.3 Destination operations. 45g39.3.8 GUC packet
23、 handling 45g39.3.8.1 General 45g39.3.8.2 Source operations 46g39.3.8.3 Forwarder operations 47g39.3.8.4 Destination operations . 48g39.3.9 TSB packet handling . 49g39.3.9.1 General 49g39.3.9.2 Source operations 50g39.3.9.3 Forwarder and receiver operations 51g39.3.10 SHB packet handling 53g39.3.10.
24、1 General 53g39.3.10.2 Source operations 53g39.3.10.3 Receiver operations. 54g39.3.11 GBC packet handling 55g39.3.11.1 General 55g39.3.11.2 Source operations 55g39.3.11.3 Forwarder and receiver operations 57g39.3.12 GAC packet handling 59g39.3.12.1 General 59g39.3.12.2 Source operations 59g39.3.12.3
25、 Forwarder and receiver operations 60g310 Conformance and test methods 62g3Annex A (normative): Duplicate packet detection 63g3A.1 General . 63g3A.2 SN- and TST-based duplicate packet detection 63g3A.3 TST-based duplicate packet detection 64g3Annex B (normative): Packet data rate and geographical ar
26、ea size control 65g3B.1 Overview 65g3B.2 Packet data rate control 65g3B.3 Geographical area size control . 65g3Annex C (normative): Position vector update . 66g3C.1 Overview 66g3C.2 Update of LocT position vector 66g3C.3 Update of GeoNetworking packet position vector . 67g3Annex D (normative): GeoUn
27、icast forwarding algorithms 68g3D.1 Overview 68g3D.2 Greedy Forwarding algorithm for GeoUnicast. 68g3D.3 Contention-Based Forwarding algorithm for GeoUnicast 69g3ETSI ETSI EN 302 636-4-1 V1.2.1 (2014-07)6Annex E (normative): GeoBroadcast forwarding algorithms 73g3E.1 Overview 73g3E.2 Simple GeoBroad
28、cast forwarding algorithm with line forwarding 73g3E.3 Contention-based forwarding algorithm for GeoBroadcast . 75g3E.4 Advanced forwarding algorithm for GeoBroadcast . 78g3Annex F (normative): GeoNetworking traffic classification 83g3Annex G (normative): GeoNetworking protocol constants 84g3Annex H
29、 (informative): ASN.1 encoding of the GeoNetworking MIB 87g3H.1 Use of modules . 87g3H.2 ASN.1 module 87g3Annex I (informative): GeoNetworking data services . 95g3I.1 General . 95g3I.2 GN-DATA.request . 95g3I.3 GN-DATA.confirm 96g3I.4 GN-DATA.indication . 96g3Annex J (informative): GeoNetworking man
30、agement services . 98g3J.1 General . 98g3J.2 GN-MGMT.request 98g3J.3 GN-MGMT.response . 98g3Annex K (informative): Interface to the Security entity . 99g3K.1 Security services used by the GeoNetworking protocol . 99g3K.2 SN-ENCAP service 99g3K.3 SN-DECAP service 100g3K.4 SN-IDCHANGE-SUBSCRIBE servic
31、e . 100g3K.5 SN-IDCHANGE-EVENT service 101g3K.6 SN-IDCHANGE-UNSUBSCRIBE service 101g3Annex L (informative): Bibliography . 103g3History 104g3ETSI ETSI EN 302 636-4-1 V1.2.1 (2014-07)7Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared t
32、o ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is av
33、ailable from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http:/ipr.etsi.org). Pursuant to the 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
34、000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This European Standard (EN) has been produced by ETSI Technical Committee Intelligent Transport Systems (ITS). The present document is part 4, sub-part 1 of a multi-part d
35、eliverable. Full details of the entire series can be found in part 1 2. National transposition dates Date of adoption of this EN: 21 July 2014 Date of latest announcement of this EN (doa): 31 October 2014 Date of latest publication of new National Standard or endorsement of this EN (dop/e): 30 April
36、 2015 Date of withdrawal of any conflicting National Standard (dow): 30 April 2016 Modal verbs terminology In the present document “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
37、.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. Introduction The GeoNetworking protocol is a network layer protocol that provides packet routing in an ad hoc network. It mak
38、es use of geographical positions for packet transport. GeoNetworking supports the communication among individual ITS stations as well as the distribution of packets in geographical areas. GeoNetworking can be executed over different ITS access technologies for short-range wireless technologies, such
39、 as ITS-G5 and infrared. The ITS access technologies for short-range wireless technologies have many technical commonalities, but also differences. In order to reuse the GeoNetworking protocol specification for multiple ITS access technologies, the specification is separated into media-independent a
40、nd media-dependent functionalities. Media-independent functionalities are those which are common to all ITS access technologies for short-range wireless communication to be used for GeoNetworking. The media-dependent functionalities extend the media-independent functionality for a specific ITS acces
41、s technology. Therefore, the GeoNetworking protocol specification consists of the standard for media-independent functionality and at least one standard for media-dependent functionality. However, it should be noted that the media-dependent extensions do not represent distinct protocol entities. ETS
42、I ETSI EN 302 636-4-1 V1.2.1 (2014-07)81 Scope The present document specifies the media-independent functionality of the GeoNetworking protocol. 2 References References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific refer
43、ences, only the cited version applies. For non-specific references, the latest version of the referenced 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: Wh
44、ile 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: “Intelligent Transport Systems (
45、ITS); Communications Architecture“. 2 ETSI EN 302 636-1: “Intelligent Transport Systems (ITS); Vehicular Communications; GeoNetworking; Part 1: Requirements“. 3 ETSI EN 302 636-2: “Intelligent Transport Systems (ITS); Vehicular Communications; GeoNetworking; Part 2: Scenarios“. 4 ETSI TS 102 636-3:
46、“Intelligent Transport Systems (ITS); Vehicular Communications; GeoNetworking; Part 3: Network architecture“. 5 ETSI EN 302 636-5-1: “Intelligent Transport Systems (ITS); Vehicular Communications; GeoNetworking; Part 5: Transport Protocols; Sub-part 1: Basic Transport Protocol“. 6 ETSI EN 302 636-6-
47、1: “Intelligent Transport Systems (ITS); Vehicular Communications; GeoNetworking; Part 6: Internet Integration; Sub-part 1: Transmission of IPv6 Packets over GeoNetworking Protocols“. 7 ETSI EN 302 931: “Intelligent Transport Systems (ITS); Vehicular Communications; Geographical Area Definition“. 8
48、Annex to ITU Operational Bulletin No. 741 - 1.VI.2001: “Complement to Recommendation ITU-T E.212 (11/98)“. NOTE: Available at: http:/www.itu.int/ITUT/. 2.2 Informative references The following referenced documents are not necessary for the application of the present document but they assist the user
49、 with regard to a particular subject area. i.1 ETSI EN 302 663: “Intelligent Transport Systems (ITS); Access layer specification for Intelligent Transport Systems operating in the 5 GHz frequency band“. i.2 ETSI TS 102 636-4-2: “Intelligent Transport Systems (ITS); Vehicular Communications; GeoNetworking; Part 4: Geographical addressing and forwarding for point-to-point and point-to-multipoint communications; Sub-part 2: Media-dependent functionalities for ITS-G5“. ETSI ETSI EN 302 636-4-1 V1.2.1 (2014-07)9i.3 ETSI TS 102 731: “Intelligent Transport S
