1、 ETSI TS 102 636-4-1 V1.1.1 (2011-06)Technical Specification Intelligent Transport Systems (ITS);Vehicular communications;GeoNetworking;Part 4: Geographical addressing and forwarding forpoint-to-point and point-to-multipoint communications;Sub-part 1: Media-Independent FunctionalityETSI ETSI TS 102
2、636-4-1 V1.1.1 (2011-06) 2Reference DTS/ITS-0030001 Keywords addressing, ITS, network, point-to-pultipoint, point-to-point, protocol, radio, 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
3、 Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice Individual copies of the present document can be downloaded from: http:/www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existin
4、g or perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF). In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. Users of the present documen
5、t should be aware that the document may be subject to 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 followi
6、ng services: http:/portal.etsi.org/chaircor/ETSI_support.asp Copyright Notification No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2011. All rights
7、reserved. DECTTM, PLUGTESTSTM, UMTSTM, TIPHONTM, the TIPHON logo and the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. LTE is a Trade Mark of ETSI currentl
8、y being 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 TS 102 636-4-1 V1.1.1 (2011-06) 3Contents Intellectual Property Rights 7g3Foreword . 7g3Introduction 7g31 Scope 8g32
9、References 8g32.1 Normative references . 8g32.2 Informative references 8g33 Definitions, symbols and abbreviations . 9g33.1 Definitions 9g33.2 Symbols 9g33.3 Abbreviations . 10g34 Services provided by the GeoNetworking protocol . 11g35 Format convention 12g36 GeoNetworking address . 13g36.1 General
10、. 13g36.2 GeoNetworking address format 13g36.3 Fields of the GeoNetworking address 13g37 Data structures 15g37.1 Location table . 15g37.1.1 General 15g37.1.2 Minimum data elements of a Location Table Entry 15g37.1.3 Maintenance of the Location Table 15g37.2 Local Position Vector . 16g37.2.1 General
11、16g37.2.2 Minimum data elements 16g37.2.3 Maintenance 16g37.3 Sequence number . 16g37.3.1 General 16g37.3.2 Maintenance 16g37.4 Location service packet buffer . 17g37.4.1 General 17g37.4.2 Maintenance 17g37.5 Forwarding packet buffer . 17g37.5.1 General 17g37.5.2 Buffer size . 17g37.5.3 Maintenance
12、18g38 GeoNetworking packet structure and formats 18g38.1 Overview 18g38.2 Packet structure 18g38.2.1 General 18g38.2.2 Overall structure . 18g38.2.3 Maximum Transmit Unit 19g38.3 GeoNetworking header structure 19g38.4 Position vector 19g38.4.1 Overview 19g38.4.2 Long Position Vector 20g38.4.2.1 Stru
13、cture 20g38.4.2.2 Fields . 20g38.4.3 Short Position Vector 22g38.4.3.1 Structure 22g38.4.3.2 Fields . 22g3ETSI ETSI TS 102 636-4-1 V1.1.1 (2011-06) 48.5 Common Header 22g38.5.1 Composition of the Common Header . 22g38.5.2 Fields of the Common Header 23g38.5.3 Encoding of the NH field 24g38.5.4 Encod
14、ing of the HT and HST fields . 24g38.5.5 Composition of the TC field . 24g38.5.6 Encoding of the TC-sub-fields 25g38.5.6.1 Encoding of the TC-sub-field Relevance 25g38.5.6.2 Encoding of the TC-sub-field Reliability 25g38.5.6.3 Encoding of the TC-sub-field Latency 25g38.5.7 Encoding of the LT field i
15、n Extended Headers 25g38.6 GeoNetworking packet headers 26g38.6.1 Overview 26g38.6.2 GeoUnicast packet header 26g38.6.2.1 Composition of the GeoUnicast packet header . 26g38.6.2.2 Fields of the GeoUnicast packet header 27g38.6.3 TSB packet header 27g38.6.3.1 Composition of the TSB packet header . 27
16、g38.6.3.2 Fields of the TSB packet header . 28g38.6.4 SHB packet header 28g38.6.4.1 Composition of the SHB packet header 28g38.6.4.2 Fields of the SHB packet header . 28g38.6.5 GeoBroadcast/GeoAnycast packet header 28g38.6.5.1 Composition of the GeoBroadcast/GeoAnycast packet header . 28g38.6.5.2 Fi
17、elds of the GeoBroadcast/GeoAnycast packet header 29g38.6.6 BEACON packet header . 30g38.6.6.1 Composition of the BEACON packet header 30g38.6.6.2 Fields of the BEACON packet header 30g38.6.7 LS Request header 30g38.6.7.1 Composition of the LS Request header . 30g38.6.7.2 Fields of the LS Request pa
18、cket header 31g38.6.8 LS Reply packet header 31g38.6.8.1 Composition of the LS Reply packet header . 31g38.6.8.2 Fields of the LS Reply packet header 32g39 Protocol operation 32g39.1 General . 32g39.2 Network management . 33g39.2.1 Address configuration . 33g39.2.1.1 General 33g39.2.1.2 Auto-address
19、 configuration . 33g39.2.1.3 Managed address configuration 33g39.2.1.3.1 Initial address configuration 33g39.2.1.3.2 Address update 33g39.2.1.4 Duplicate address detection . 34g39.2.2 Local position vector and time update 34g39.2.2.1 Overview. 34g39.2.2.2 Local Position Vector update 34g39.2.2.3 Tim
20、e update. 34g39.2.3 Beaconing . 34g39.2.3.1 Overview . 34g39.2.3.2 Source operations 35g39.2.3.3 Receiver operations. 36g39.2.4 Location service 36g39.2.4.1 General 36g39.2.4.2 Source operations 37g39.2.4.2.1 Overview . 37g39.2.4.2.2 Source operation for initial LS Request . 37g39.2.4.2.3 Source ope
21、ration for LS Request re-transmission . 38g39.2.4.2.4 Source operation for LS Reply 38g39.2.4.3 Forwarder operations 39g39.2.4.4 Destination operations. 39g3ETSI ETSI TS 102 636-4-1 V1.1.1 (2011-06) 59.3 Packet handling 39g39.3.1 Overview 39g39.3.2 Common Header field settings 40g39.3.3 Common Heade
22、r processing . 41g39.3.4 GeoUnicast packet handling . 41g39.3.4.1 General 41g39.3.4.2 Source operations 41g39.3.4.3 Forwarder operations 42g39.3.4.4 Destination operations . 43g39.3.5 TSB packet handling . 44g39.3.5.1 General 44g39.3.5.2 Source operations 44g39.3.5.3 Forwarder and receiver operation
23、s 45g39.3.6 SHB packet handling 46g39.3.6.1 General 46g39.3.6.2 Source operations 46g39.3.6.3 Receiver operations. 46g39.3.7 GeoBroadcast packet handling . 47g39.3.7.1 General 47g39.3.7.2 Source operations 47g39.3.7.3 Forwarder and receiver operations 48g39.3.8 GeoAnycast packet handling 49g39.3.8.1
24、 General 49g39.3.8.2 Source operations 49g39.3.8.3 Forwarder and receiver operations 50g310 Conformance and test methods 50g3Annex A (normative): Duplicate packet detection . 51g3Annex B (normative): Position vector update . 52g3B.1 Overview 52g3B.2 Update of LocT position vector 52g3B.3 Update of G
25、eoNetworking packet position vector . 53g3Annex C (normative): GeoUnicast forwarding algorithms 54g3C.1 Overview 54g3C.2 Greedy Forwarding algorithm 54g3C.3 Contention-based forwarding algorithm. 54g3Annex D (normative): GeoBroadcast forwarding algorithms 57g3D.1 Overview 57g3D.2 Simple GeoBroadcast
26、 forwarding algorithm with line forwarding 57g3Annex E (informative): Advanced GeoBroadcast forwarding algorithms . 58g3E.1 Overview 58g3E.2 Advanced GeoBroadcast forwarding algorithm 1 58g3E.3 Advanced GeoBroadcast forwarding algorithm 2 61g3Annex F (normative): GeoNetworking protocol constants . 6
27、3g3Annex G (normative): ASN.1 encoding of the GeoNetworking MIB 65g3G.1 Use of modules . 65g3G.2 ASN.1 module 65g3ETSI ETSI TS 102 636-4-1 V1.1.1 (2011-06) 6Annex H (informative): GeoNetworking data services . 71g3H.1 General . 71g3H.2 GN-DATA.request . 71g3H.3 GN-DATA.confirm 72g3H.4 GN-DATA.indica
28、tion . 72g3Annex I (informative): GeoNetworking management services . 73g3I.1 General . 73g3I.2 GN-MGMT.request 73g3I.3 GN-MGMT.response . 73g3Annex J (informative): Bibliography . 74g3History 75g3ETSI ETSI TS 102 636-4-1 V1.1.1 (2011-06) 7Intellectual Property Rights IPRs essential or potentially e
29、ssential to the present document may have been declared to 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 no
30、tified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http:/webapp.etsi.org/IPR/home.asp). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
31、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. Foreword This Technical Specification (TS) has been produced by ETSI Technical Committee Intelligent Transp
32、ort System (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. Introduction The GeoNetworking protocol is a network layer protocol that provides packet routing in an ad hoc network. It makes use of geographical po
33、sitions 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 as ITS-G5 and infrared.
34、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 and media-dependent functi
35、onalities. Media-independent functionalities are those which are common to all ITS access technologies for short-range wireless communication to be used for GeoNetworking. These media-dependent functionalities extend the media-independent functionality for a specific ITS access technology. Therefore
36、, 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. ETSI ETSI TS 102 636-4-1 V
37、1.1.1 (2011-06) 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 references, only the cited
38、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 incl
39、uded 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 (ITS); Communications Arc
40、hitecture“. 2 ETSI TS 102 636-1: “Intelligent Transport Systems (ITS); Vehicular Communications; GeoNetworking; Part 1: Requirements“. 3 ETSI TS 102 636-2: “Intelligent Transport Systems (ITS); Vehicular Communications; GeoNetworking; Part 2: Scenarios“. 4 ETSI TS 102 636-3: “Intelligent Transport S
41、ystems (ITS); Vehicular Communications; GeoNetworking; Part 3: Network architecture“. 5 ETSI TS 102 636-5-1: “Intelligent Transport Systems (ITS); Vehicular Communications; GeoNetworking; Part 5: Transport Protocols; Sub-part 1: Basic Transport Protocol“. 6 ETSI TS 102 636-6-1: “Intelligent Transpor
42、t 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 ITU-T Recommendation X.6
43、91 (2002): “Information technology - ASN.1 encoding rules: Specification of Packed Encoding Rules (PER)“. 9 Annex to ITU Operational Bulletin No. 741 - 1.VI.200: “Complement To ITUT Recommendation E.212 (11/98)“. NOTE: Available at: http:/www.itu.int/ITUT/. 2.2 Informative references The following r
44、eferenced 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 ES 202 663: “Intelligent Transport Systems (ITS); European profile standard for the physical and medium access control layer of Intelligent Tr
45、ansport Systems operating in the 5 GHz frequency band“. ETSI ETSI TS 102 636-4-1 V1.1.1 (2011-06) 9i.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 communi
46、cations; Sub-part 2: Media dependent functionalities for ITS-G5A media“. i.3 IEEE 802.3: “Ethernet Working Group“. i.4 IEEE 802.11p: “IEEE Standard for Local and Metropolitan Area Networks - Specific requirements Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specificatio
47、ns Amendment 6: Wireless Access in Vehicular Environments“. 3 Definitions, symbols and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions given in EN 302 665 1, TS 102 636-3 4, TS 102 636-6-1 6 and the following apply: destination: receiver that process
48、es a GeoUnicast packet and delivers it to upper protocol entities, but does not relay the packet to other GeoAdHoc routers forwarder: GeoAdhoc router that processes a packet and relays it to other GeoAdhoc routers GeoAdhoc router: Ad hoc router that implements the GeoNetworking protocol local positi
49、on vector: position vector for the local GeoAdhoc router neighbour: GeoAdhoc router in direct (single-hop) communication range packet: GeoNetworking PDU position vector: position information of a GeoAdhoc router represented by a tuple of address, timestamp, geographical position, speed, heading and corresponding accuracy information receiver: GeoAdhoc router that processes a packet, delivers its data to upper protocol entities and relays the packet to other GeoAdhoc routers sender: GeoAdhoc router that has sent the GeoNetworking packet sour
