ETSI TR 102 863-2011：ITS车载通信LDM标准应用与指南

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"ETSI TR 102 863-2011 是一项关于智能传输系统（ITS）车载通信的关键技术文档，主要关注于应用的基础集，特别是本地动态地图（LDM）。这份标准制定的目的是为了规范和提供指导，确保在车辆与基础设施之间的通信中，LDM的标准化操作能够高效且准确地进行。LDM是智能交通系统中的一个重要组成部分，它为驾驶员提供实时的道路信息，包括交通流量、路况更新和导航指引等。该标准版本1.1.1发布于2011年6月，其核心内容围绕着如何通过标准化流程来设计和实现LDM应用，强调了应用的开发和实施应遵循一套统一的规则和指南。它参考了DTR/ITS-0010006，表明这份文档是在既有的技术框架下进行的扩展和深化。关键词包括“应用”和“ITS”，表明文档重点在于为ITS应用开发者和集成者提供技术和实践上的支持，帮助他们创建出符合国际标准的LDM服务。标准的制定者是欧洲电信标准研究所（ETSI），这是一家在信息技术领域具有影响力的组织，致力于推动全球电信和信息技术的发展。值得注意的是，ETSI TR 102 863-2011 提供了一个重要的警告：个人版文档可以从其官方网站http://www.etsi.org 下载，但所有用户应意识到文档可能需要修订或更新，因此建议查阅最新的PDF版本，该版本存放在ETSI秘书处特定的网络驱动器上，作为官方参考版本。这份标准为智能交通系统的本地动态地图技术提供了基石，确保了车载通信系统的可靠性和互操作性，对于推动智能交通系统的发展和提升道路安全具有重要意义。对于任何涉及LDM开发或应用的组织和个人，理解和遵循这份标准至关重要。"

ETSI

SI TR 102 863 V1.1.1 (2011

06)

[i.11] CAR 2 CAR Communication Consortium (2007): "Manifesto; Overview of the C2C-CC System".

[i.12] EC COOPERS Project deliverable WP3000 (2010):"Services and value chains, concerning

operator/ user behaviour; Integration of services in the co-operative system".

[i.13] ISO 17572-3:2008: "Intelligent transport systems (ITS) -- Location referencing for geographic

databases -- Part 3: Dynamic location references (dynamic profile)".

[i.14] OpenLR White Paper Version 1.3 (05.2010): "An open standard for encoding, transmitting and

decoding location references in digital maps".

[i.15] ETSI TS 102 637-1: "Intelligent Transport Systems (ITS); Vehicular Communications; Basic Set

of Applications; Part 1: Functional Requirements".

3 Definitions and abbreviations

3.1 Definitions

For the purposes of the present document, the terms and definitions given in EN 302 665 [i.2] and the following apply:

Local Dynamic Map (LDM): conceptual data store which is embedded in an ITS station and which contains

topographical, positional and status information related to ITS stations within a geographic area surrounding the host

station

3.2 Abbreviations

For the purposes of the present document, the following abbreviations apply:

API Application Program Interface

BSA Basic Set of Applications

CA Co-operative Awareness

CAM Co-operative Awareness Message

CN Co-operative Navigation

COOPERS CO-OPERative systems for intelligent road Safety

CS Communities Service

CSM Co-operative Speed Management

CVIS Co-operative Vehicle-Infrastructure Systems

DENM Decentralized Environmental Notification Message

FA Facilites/Applications

ICT Information and Communication Technology

ITS Intelligent Transport System

LBS Location-Based Service

LCM Life Cycle Management

LDM Local Dynamic Map

MF Management/Facilities

NF Networking&Transport/Facilities

POI Point Of Interest

RHW Road Hazard Warning

RSU Road Side Unit

SAP Service Access Point

SF Security/Facilities

TPEG Transport Protocol Experts Group

V2I Vehicle to Infrastructure

V2V Vehicle to Vehicle

WLAN Wireless Local Area Network

ETSI

ETSI TR 102 863 V1.1.1 (2011

06)

4 General description of a LDM

4.1 The LDM

Information about the local environment is essential in co-operative ITS systems. ITS applications require information

both on moving objects such as other vehicles nearby and on stationary objects such as traffic road signs. Common

information required by different applications can be maintained in a local dynamic map.

The Local Dynamic Map (LDM) is a conceptual data store located within an ITS station [i.2] containing information

which is relevant to the safe and successful operation of ITS applications. Data can be received from a range of different

sources such as vehicles, infrastructure units, traffic centres and on-board sensors as shown in Figure 1. Read and write

access to data held within the LDM is achieved using an interface. The LDM offers mechanisms to grant safe and

secure data access. Thus the LDM is able to provide information on the surrounding traffic and RSU infrastructure to all

applications that require it.

ITS Station

(Vehicle)

Local

Dynamic

Map (LDM)

ITS Station

(Centre)

ITS Station

(Roadside)

In-Station

Sensors

ITS

Applications

Figure 1: Relationship between LDM and its information sources

The LDM contains information on real-world and conceptual objects that have an influence on the traffic flow. The

LDM is not required to maintain information on the ITS station it is part of but may do so if necessary in a particular

implementation.

Data describing real world objects can be categorized in four different types as follows:

• Type1: permanent static data, usually provided by a map data supplier.

• Type 2: transient static data, obtained during operation, e.g. changed static speed limits.

• Type 3: transient dynamic data, e.g. weather situation, traffic information.

• Type 4: highly dynamic data, e.g. CAM.

The LDM will not contain type 1 data. Not all ITS stations require type 1 data. In case type 1 data are needed by an

application within an ITS system (e.g. a navigation application), these data will be optimised and stored for the

respective specific application. It is currently not feasible to define one common map data format and specify the

required standard interfaces to access these data that meet the requirements for all ITS stations.

NOTE: Further study is required to determine how accurate local digital mapping information can be received,

stored and provided by the LDM for applications which would benefit by having such information

available.

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