1、 ETSI EN 302 636-4-1 V1.3.1 (2017-08) 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 V1.3.1 (2017-08)2 Reference REN/ITS-00349 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 S
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9、n. ETSI ETSI EN 302 636-4-1 V1.3.1 (2017-08)3 Contents Intellectual Property Rights 7g3Foreword . 7g3Modal verbs terminology 7g3Introduction 8g31 Scope 9g32 References 9g32.1 Normative references . 9g32.2 Informative references 10g33 Definitions, symbols and abbreviations . 10g33.1 Definitions 10g33
10、.2 Symbols 11g33.3 Abbreviations . 11g34 Services provided by the GeoNetworking protocol . 12g35 Format convention 13g36 GeoNetworking address . 14g36.1 General . 14g36.2 GeoNetworking address format 14g36.3 Fields of the GeoNetworking address 15g37 Security and privacy . 15g38 Data structures 16g38
11、.1 Location table . 16g38.1.1 General 16g38.1.2 Minimum data elements of a Location Table Entry 16g38.1.3 Maintenance of the Location Table 17g38.2 Ego Position Vector 17g38.2.1 General 17g38.2.2 Minimum data elements 17g38.2.3 Maintenance 17g38.3 Sequence number . 17g38.3.1 General 17g38.3.2 Mainte
12、nance 18g38.4 Location service packet buffer . 18g38.4.1 General 18g38.4.2 Buffer size . 18g38.4.3 Maintenance 18g38.5 Forwarding packet buffer . 19g38.5.1 General 19g38.5.2 Buffer size . 19g38.5.3 Maintenance 19g39 GeoNetworking packet structure and formats 20g39.1 Overview 20g39.2 Packet structure
13、 20g39.2.1 General 20g39.2.2 Overall packet structure 20g39.2.3 Maximum Transmit Unit 21g39.3 GeoNetworking header structure 21g39.4 GeoNetworking Secured Packet . 21g39.5 Position vectors 21g39.5.1 Overview 21g39.5.2 Long Position Vector 22g39.5.2.1 Structure 22g3ETSI ETSI EN 302 636-4-1 V1.3.1 (20
14、17-08)4 9.5.2.2 Fields . 22g39.5.3 Short Position Vector 22g39.5.3.1 Structure 22g39.5.3.2 Fields . 23g39.6 Basic Header 23g39.6.1 Composition of the Basic Header . 23g39.6.2 Fields of the Basic Header 24g39.6.3 Encoding of the NH field in the Basic Header . 24g39.6.4 Encoding of the LT field . 24g3
15、9.7 Common Header 25g39.7.1 Composition of the Common Header . 25g39.7.2 Fields of the Common Header 25g39.7.3 Encoding of the NH field in the Common Header 26g39.7.4 Encoding of the HT and HST fields 26g39.7.5 Encoding of the TC field . 27g39.8 GeoNetworking packet header types 27g39.8.1 Overview 2
16、7g39.8.2 GUC packet header . 27g39.8.2.1 Composition of the GUC packet header 27g39.8.2.2 Fields of the GUC packet header 28g39.8.3 TSB packet header 28g39.8.3.1 Composition of the TSB packet header . 28g39.8.3.2 Fields of the TSB packet header . 29g39.8.4 SHB packet header 29g39.8.4.1 Composition o
17、f the SHB packet header 29g39.8.4.2 Fields of the SHB packet header . 30g39.8.5 GBC/GAC packet header 30g39.8.5.1 Composition of the GBC/GAC packet header 30g39.8.5.2 Fields of the GBC/GAC packet header . 31g39.8.6 BEACON packet header . 31g39.8.6.1 Composition of the BEACON packet header 31g39.8.6.
18、2 Fields of the BEACON packet header 32g39.8.7 LS Request packet header . 32g39.9.7.1 Composition of the LS Request packet header 32g39.8.7.2 Fields of the LS Request packet header 33g39.8.8 LS Reply packet header 33g39.8.8.1 Composition of the LS Reply packet header . 33g39.8.8.2 Fields of the LS R
19、eply packet header 34g310 Protocol operation 34g310.1 General . 34g310.2 Network management . 35g310.2.1 Address configuration . 35g310.2.1.1 General 35g310.2.1.2 Auto-address configuration . 35g310.2.1.3 Managed address configuration 35g310.2.1.3.1 General Requirements . 35g310.2.1.3.2 Initial addr
20、ess configuration 35g310.2.1.3.3 Address update 35g310.2.1.4 Anonymous address configuration 36g310.2.1.5 Duplicate address detection . 36g310.2.2 Ego position vector and time update . 37g310.2.2.1 Overview . 37g310.2.2.2 Ego Position Vector update . 37g310.2.2.3 Time update. 37g310.2.3 Beaconing .
21、37g310.2.4 Location service 37g310.3 Packet handling 38g310.3.1 Overview 38g310.3.2 Basic Header field settings . 39g310.3.3 Basic Header processing 39g310.3.4 Common Header field settings 41g3ETSI ETSI EN 302 636-4-1 V1.3.1 (2017-08)5 10.3.5 Common Header processing . 42g310.3.6 Beacon packet handl
22、ing 42g310.3.6.1 General 42g310.3.6.2 Source operations 42g310.3.6.3 Receiver operations. 44g310.3.7 Location service packet handling 44g310.3.7.1 Source operations 44g310.3.7.1.1 Overview . 44g310.3.7.1.2 Operation for initial LS Request 44g310.3.7.1.3 Operation for LS Request re-transmission. 45g3
23、10.3.7.1.4 Operation for LS Reply . 46g310.3.7.2 Forwarder operations 46g310.3.7.3 Destination operations . 46g310.3.8 GUC packet handling 48g310.3.8.1 General 48g310.3.8.2 Source operations 48g310.3.8.3 Forwarder operations 50g310.3.8.4 Destination operations. 51g310.3.9 TSB packet handling . 52g31
24、0.3.9.1 General 52g310.3.9.2 Source operations 53g310.3.9.3 Forwarder and receiver operations 54g310.3.10 SHB packet handling 56g310.3.10.1 General 56g310.3.10.2 Source operations 56g310.3.10.3 Receiver operations . 57g310.3.11 GBC packet handling 58g310.3.11.1 General 58g310.3.11.2 Source operation
25、s 58g310.3.11.3 Forwarder and receiver operations 60g310.3.12 GAC packet handling 62g310.3.12.1 General 62g310.3.12.2 Source operations 62g310.3.12.3 Forwarder and receiver operations 62g3Annex A (normative): Duplicate packet detection 64g3A.1 General . 64g3A.2 SN-based duplicate packet detection 64
26、g3Annex B (normative): Packet data rate and geographical area 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 GeoNetwork
27、ing packet position vector . 67g3Annex D (normative): GeoNetworking forwarding algorithm selection procedure 68g3Annex E (normative): Non-area forwarding algorithms 69g3E.1 Overview 69g3E.2 Greedy forwarding algorithm . 69g3E.3 Non-area contention-based forwarding algorithm 70g3ETSI ETSI EN 302 636-
28、4-1 V1.3.1 (2017-08)6 Annex F (normative): Area forwarding algorithms . 73g3F.1 Overview 73g3F.2 Simple GeoBroadcast forwarding algorithm 73g3F.3 Area contention-based forwarding algorithm . 73g3F.4 Area advanced forwarding algorithm . 76g3Annex G (normative): GeoNetworking traffic classification 81
29、g3Annex H (normative): GeoNetworking protocol constants 82g3Annex I (informative): ASN.1 encoding of the GeoNetworking MIB 84g3I.1 Use of modules . 84g3I.2 ASN.1 module 84g3Annex J (informative): GeoNetworking data services . 91g3J.1 General . 91g3J.2 GN-DATA.request 91g3J.3 GN-DATA.confirm 92g3J.4
30、GN-DATA.indication 92g3Annex K (informative): GeoNetworking management services . 94g3K.1 General . 94g3K.2 GN-MGMT.request 94g3K.3 GN-MGMT.response 94g3Annex L (informative): Interface to the Security entity . 95g3L.1 Security services used by the GeoNetworking protocol . 95g3Annex M (informative):
31、 Bibliography . 96g3History 97g3ETSI ETSI EN 302 636-4-1 V1.3.1 (2017-08)7 Intellectual Property Rights Essential patents IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available
32、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 available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (ht
33、tps:/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 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, ess
34、ential to the present document. Trademarks The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners. ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no right to use or reproduce
35、any trademark and/or tradename. Mention of those trademarks in the present document does not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks. Foreword This European Standard (EN) has been produced by ETSI Technical Committee Intelligent Trans
36、port Systems (ITS). The present document is part 4, sub-part 1 of a multi-part deliverable. Full details of the entire series can be found in part 1 2. National transposition dates Date of adoption of this EN: 21 August 2017 Date of latest announcement of this EN (doa): 30 November 2017 Date of late
37、st publication of new National Standard or endorsement of this EN (dop/e): 31 May 2018 Date of withdrawal of any conflicting National Standard (dow): 31 May 2018 Modal verbs terminology In the present document “shall“, “shall not“, “should“, “should not“, “may“, “need not“, “will“, “will not“, “can“
38、 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 deliverables except when used in direct citation. ETSI ETSI EN 302 636-4-1 V1.3.1 (2017-08)8 Introduction The GeoNe
39、tworking protocol is a network layer protocol that provides packet routing in an ad hoc network. It makes 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. GeoNetwor
40、king can be executed over different ITS access technologies for short-range wireless technologies, such 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 spec
41、ification for multiple ITS access technologies, the specification is separated into media-independent and 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.
42、The media-dependent functionalities extend the media-independent functionality for a specific ITS access technology. Therefore, the GeoNetworking protocol specification consists of the standard for media-independent functionality and at least one standard for media-dependent functionality. However,
43、it should be noted that the media-dependent extensions do not represent distinct protocol entities. ETSI ETSI EN 302 636-4-1 V1.3.1 (2017-08)9 1 Scope The present document specifies the media-independent functionality of the GeoNetworking protocol. 2 References 2.1 Normative references References ar
44、e 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 referenced document (including any amendments) applies. Referenced documents
45、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. The following referenced documents are ne
46、cessary for the application of the present document. 1 ETSI EN 302 665 (V1.1.1): “Intelligent Transport Systems (ITS); Communications Architecture“. 2 ETSI EN 302 636-1 (V1.2.1): “Intelligent Transport Systems (ITS); Vehicular Communications; GeoNetworking; Part 1: Requirements“. 3 ETSI EN 302 636-2
47、 (V1.2.1): “Intelligent Transport Systems (ITS); Vehicular Communications; GeoNetworking; Part 2: Scenarios“. 4 ETSI EN 302 636-3 (V1.2.1): “Intelligent Transport Systems (ITS); Vehicular Communications; GeoNetworking; Part 3: Network architecture“. 5 ETSI TS 102 636-4-2: “Intelligent Transport Syst
48、ems (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“. 6 ETSI EN 302 636-5-1 (V1.2.1): “Intelligent Transport Systems (ITS); Vehicular Commu
49、nications; GeoNetworking; Part 5: Transport Protocols; Sub-part 1: Basic Transport Protocol“. 7 ETSI EN 302 636-6-1 (V1.2.1): “Intelligent Transport Systems (ITS); Vehicular Communications; GeoNetworking; Part 6: Internet Integration; Sub-part 1: Transmission of IPv6 Packets over GeoNetworking Protocols“. 8 ETSI EN 302 931 (V1.1.1): “Intelligent Transport Systems (ITS); Vehicular Communications; Geographical Area Definition“. 9 ETSI TS 102 731: “Intelligent Transport Systems (ITS); Security; Security Services and Architecture“. 10 ETSI TS 103 097: “Intel
