1、 ETSI TS 102 636-3 V1.1.1 (2010-03)Technical Specification Intelligent Transport Systems (ITS);Vehicular Communications;GeoNetworking;Part 3: Network architectureETSI ETSI TS 102 636-3 V1.1.1 (2010-03)2Reference DTS/ITS-0030004 Keywords addressing, ITS, network, point-to-multipoint, point-to-point,
2、protocol 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 Individual copies of the present docum
3、ent 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 existing or perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF). In case of disput
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6、en permission. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2010. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTM, TIPHONTM, the TIPHON logo and the ETSI logo are Trade Marks of ETSI registered for the benefit of it
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8、and owned by the GSM Association. ETSI ETSI TS 102 636-3 V1.1.1 (2010-03)3Contents Intellectual Property Rights 4g3Foreword . 4g3Introduction 4g31 Scope 5g32 References 5g32.1 Normative references . 5g32.2 Informative references 6g33 Definitions and abbreviations . 6g33.1 Definitions 6g33.2 Abbrevia
9、tions . 7g34 Network architecture for ITS stations 8g35 Deployment scenarios of the generic network architecture 10g36 Components of the network architecture 11g36.1 General . 11g36.2 Sub-components of vehicle ITS stations and roadside ITS stations . 12g36.3 Network connectivity among ITS stations .
10、 13g36.4 Network reference points . 14g37 ITS station protocol architecture 15g37.1 Protocol stack overview . 15g37.2 Protocols of the ITS network Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates ar
11、e 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 can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI
12、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 Transport System (ITS). The present document is part 3 of a multi-part deliverable. Full details of the entire seri
13、es can be found in part 1 i.13. Introduction The present document specifies the network architecture for communication-based Intelligent Transport Systems (ITS) using different ITS access technologies, such as ITS-G5. The network architecture provides - in combination with the description of scenari
14、os - a basis for the technical specification of the network and transport protocols, in particular for GeoNetworking and its related protocols. The present document first introduces a generic, high-level system view of the network architecture and defines four basic deployment scenarios. Based on th
15、e system view, it identifies and describes the main network components and specifies network reference points among them. Central component of the architecture is the ITS station. For this component, an overview of its protocol architecture is given and different options of using the GeoNetworking p
16、rotocol in combination with transport protocols and protocols of the IP suite are described. Finally, the present document defines frameworks for different aspects of networking and data transport, such as ad hoc communication, addressing, resource management and data congestion control, integration
17、 with protocols of the IP suite and others. The network architecture is based on the ITS architecture specified in 1 and represents the networking viewpoint of the overall architecture. Sources of input for the present document are i.1, i.2 and i.3. ETSI ETSI TS 102 636-3 V1.1.1 (2010-03)51 Scope Th
18、e present document specifies the network architecture for communication-based Intelligent Transport Systems (ITS). The network architecture is focused on, but not limited to, vehicular communication. The architecture enables a wide range of ITS applications for road safety, traffic efficiency as wel
19、l as for infotainment and business. The present document defines the framework for network and data transport protocols that provide data exchange among ITS stations. A particular aspect is the GeoNetworking protocol that provides ad hoc and multi-hop communication over short-range wireless technolo
20、gies utilizing geographical positions. 2 References References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For a specific reference, subsequent revisions do not apply. Non-specific reference may be made only to a complete document
21、or a part thereof and only in the following cases: - if it is accepted that it will be possible to use all future changes of the referenced document for the purposes of the referring document; - for informative references. Referenced documents which are not found to be publicly available in the expe
22、cted 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 indispensable for the application
23、of the present document. For dated references, only the edition cited applies. For non-specific references, the latest edition of the referenced document (including any amendments) applies. 1 ETSI EN 302 665: “Intelligent Transport Systems (ITS); Communications Architecture“. 2 ISO/IEC 7498-1: “Info
24、rmation technology - Open Systems Interconnection - Basic Reference Model: The Basic Model“. 3 ISO/IEC 8802-2: “ Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements; Part 2: Logical Link Control“. 4 IETF
25、RFC 791: “Internet Protocol“. 5 IETF RFC 2460: “Internet Protocol, Version 6 (IPv6) Specification“. 6 IETF RFC 3775: “Mobility Support in IPv6“. 7 IETF RFC 768: “User Datagram Protocol“. 8 IETF RFC 793: “Transmission Control Protocol“. 9 IETF RFC 3963: “Network Mobility (NEMO) Basic Support Protocol
26、“. 10 IETF RFC 5213: “Proxy Mobile IPv6“. ETSI ETSI TS 102 636-3 V1.1.1 (2010-03)62.2 Informative references The following referenced documents are not essential to the use of the present document but they assist the user with regard to a particular subject area. For non-specific references, the lat
27、est version of the referenced document (including any amendments) applies. i.1 COMeSafety Deliverable 3.1 - Version 2.0 - March 2009: “European ITS Communication Architecture - Overall Framework - Proof of Concept Implementation. i.2 PRE-DRIVE C2X Deliverable 1.4 - Version 1.2 - August 2009: “Refine
28、d Architecture“. . i.3 GeoNet Deliverable 1.1 - Version 1.0 - March 2009: “Preliminary Architecture Design“. i.4 ITU-R Recommendation M.687-2: “International Mobile Telecommunications 2000 (IMT-2000)“. i.5 IETF RFC 3753: “Mobility Related Terminology“. i.6 3GPP: “UMTS Standard, Release 08 Specificat
29、ion“. NOTE: Available at: http:/www.3gpp.org. i.7 IETF RFC 4213: “Basic Transition Mechanisms for IPv6 Hosts and Routers“. i.8 IETF RFC 2185: “Routing Aspects of IPv6 Transition“. i.9 ETSI TS 102 637-1: “Intelligent Transport Systems (ITS); Vehicular Communications; Basic Set of Applications; Part 1
30、: Functional Requirements“. i.10 ETSI TS 102 637-2: “Intelligent Transport Systems (ITS); Vehicular Communications; Basic Set of Applications; Part 2: Specification of Co-operative Awareness Basic Service“. i.11 ETSI TS 102 637-3: “Intelligent Transport Systems (ITS); Vehicular Communications; Basic
31、 Set of Application; Part 3: Specification of Decentralized Environmental Notification Basic Service“. i.12 ETSI ES 202 663: “Intelligent Transport Systems (ITS); European profile standard for the physical and medium access control layer of Intelligent Transport Systems operating in the 5 GHz freque
32、ncy band“. i.13 ETSI TS 102 636-1: “Intelligent Transport Systems (ITS); Vehicular Communications; GeoNetworking; Part 1: Requirements“. i.14 ETSI TS 102 731: “Intelligent Transportation Systems (ITS); Security; Security Services and Architecture“. i.15 ETSI TS 102 723 (all parts): “Intelligent Tran
33、sport Systems; OSI cross-layer topics“. i.16 ETSI TS 102 636-5: “Intelligent Transport Systems (ITS); Vehicular Communications; GeoNetworking; Part 5: Transport Protocols“. i.17 ETSI TS 102 636-4-1: “Intelligent Transportation System (ITS); Vehicular communications; GeoNetworking; Part 4: Geographic
34、al addressing and forwarding for point-to-point and point-to-multipoint communications; Subpart 1: Media independent functionalities“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions given in 1 and 2 and the following apply: access
35、router: IPv6 router that provides access to other networks, such as to the ITS access network NOTE: The definition is taken from i.5 and adapted to the ITS network architecture. ETSI ETSI TS 102 636-3 V1.1.1 (2010-03)7access network gateway: router at the edge of a network that connects an ITS stati
36、on-internal network to the ITS access network, the public access network, and the private access network ad hoc network: wireless networks based on self-organization without the need for a coordinating infrastructure application unit: physical unit in an ITS station that executes applications and us
37、es the communication services of a communication ITS services provided by road traffic management centres and backend services; ITS operational support services required to operate the ITS, such as security services. Core component of the architecture is the ITS station, which has two main roles: In
38、 its first role, the ITS station is a network node and acts as a communication source or sink. Likewise an ITS station can be a forwarder of data, e.g. in the ITS ad hoc network. In its second role, the ITS station is placed at the network edge and connect the different networks via an ITS station i
39、nternal network (see Figure 1). ITS stations shall be able to communicate via at least one of the following means (see Figure 2): a) via an ITS ad hoc network; b) via an ITS access network; c) via a public access network; d) via a private access network; e) via one of the access networks into the co
40、re network (e.g. the Internet). In addition to the networks listed above, an ITS station can also be attached to proprietary local networks of e.g. vehicle ITS sub-systems and roadside ITS sub-system as presented in 1. Typical examples are: Controller Area Network (CAN) in a vehicle ITS sub-system.
41、Legacy roadside infrastructure in a roadside ITS sub-system. However, these proprietary networks are outside the scope of the present document. ETSI ETSI TS 102 636-3 V1.1.1 (2010-03)10Figure 2: High-level network architecture 5 Deployment scenarios of the generic network architecture The ITS networ
42、k architecture can be deployed in different scenarios to adapt to specific economical and regulatory conditions and to facilitate a gradual introduction of ITS. Basically, a deployment scenario is a subset of the overall architecture (see Figure 2) created by a combination of the different network t
43、ypes. Four basic deployment scenarios can be defined. The basic deployment scenarios can further be extended to hybrid scenarios that combine two or more deployment scenarios. These combinations also include scenarios in which a network is connected to more than a single network simultaneously. Scen
44、ario A establishes an ITS ad hoc network, which can be connected via an ITS access network to the core network (e.g. the Internet) (see Figure 3). Deployment scenario B represents an ITS access network, which can be connected to the core network (e.g. the Internet) (see Figure 4). Deployment scenari
45、o C is based on a public access network, which can also provide connectivity to the core network (e.g. the Internet) (see Figure 5). Deployment scenario D uses a private access network to connect to other networks or the core network (e.g. the Internet) (see Figure 6). Figure 3: Deployment scenario
46、A: Ad hoc-centric In Figure 4, the ITS access network connects roadside ITS stations to each other and provides connectivity to a core network (e.g. the Internet). Optionally, the ITS access network can also be replaced by a public or private access network. ETSI ETSI TS 102 636-3 V1.1.1 (2010-03)11
47、Figure 4: Deployment scenario B: ITS access network-centric Figure 5: Deployment scenario C: Public access network-centric Figure 6: Deployment scenario D: Private access network-centric 6 Components of the network architecture 6.1 General Main component of the network architecture is the ITS statio
48、n as specified in 1 with the following sub-systems: vehicle ITS station; personal ITS station; roadside ITS station; central ITS station. In addition to these instantations, the ITS-S Border Router 1 interconnects networks in the ITS domain with networks in the generic domain. Additionally to the IT
49、S station component, the present document introduces specific network components related to IPv6 communication i.5, i.e.: ad hoc router; mobile router; access router; and access network gateway; that will be defined below. ETSI ETSI TS 102 636-3 V1.1.1 (2010-03)126.2 Sub-components of vehicle ITS stations and roadside ITS stations Vehicle ITS stations and roadside ITS stations consist of two types of sub-components, the Communication all layers can also be implemented in
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