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1、DRAFT FOR DEVELOPMENT DD CEN/TS 14821-4:2003 Traffic and Travel information (TTI) TTI messages via cellular networks Part 4: Service-independent protocols ICS 35.240.60 ? Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 04:05:12 GMT+00:00 2006, Uncontrolled Copy,
2、 (c) BSI DD CEN/TS 14821-4:2003 This Draft for Development was published under the authority of the Standards Policy and Strategy Committee on 9 July 2003 BSI 9 July 2003 ISBN 0 580 42219 4 National foreword This Draft for Development reproduces verbatim CEN/TS 14821-4:2003. This publication is not
3、to be regarded as a British Standard. It is being issued in the Draft for Development series of publications and is of a provisional nature because technology in this area is rapidly evolving. It should be applied on this provisional basis, so that information and experience of its practical applica
4、tion may be obtained. Comments arising from the use of this Draft for Development are requested so that UK experience can be reported to the international organization responsible for the Technical Specification. A review of this publication will be initiated not later than 3 years after its publica
5、tion by the international organization so that a decision can be taken on its status at the end of its 3-year life. Notification of the start of the review period will be made in an announcement in the appropriate issue of Update Standards. According to the replies received by the end of the review
6、period, the responsible BSI Committee will decide whether to support the conversion into an international standard, to extend the life of the Technical Specification for another 3 years or to withdraw it. Comments should be sent in writing to the Secretary of BSI Technical Committee EPL/278, Road tr
7、ansport informatics, at British Standards House, 389 Chiswick High Road, London W4 4AL, giving the document reference and clause number and proposing, where possible, an appropriate revision of the text. A list of organizations represented on this committee can be obtained on request to its secretar
8、y. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue
9、 or of British Standards Online. Summary of pages This document comprises a front cover, an inside front cover, the CEN/TS title page, pages 2 to 42, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments iss
10、ued since publication Amd. No. DateComments Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 04:05:12 GMT+00:00 2006, Uncontrolled Copy, (c) BSI TECHNICAL SPECIFICATION SPCIFICATION TECHNIQUE TECHNISCHE SPEZIFIKATION CEN/TS 14821-4 May 2003 ICS 35.240.60 English
11、version Traffic and Travel information (TTI) - TTI messages via cellular networks - Part 4: Service-independent protocols This Technical Specification (CEN/TS) was approved by CEN on 10 May 2001 for provisional application. The period of validity of this CEN/TS is limited initially to three years. A
12、fter two years the members of CEN will be requested to submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard. CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available. It
13、 is permissible to keep conflicting national standards in force (in parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany
14、, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Br
15、ussels 2003 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. CEN/TS 14821-4:2003 E Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 04:05:12 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CEN/TS 14821-4:
16、2003 (E) 2 Table of contents PAGE TABLE OF CONTENTS2 FOREWORD3 INTRODUCTION4 1.SCOPE5 2.NORMATIVE REFERENCES6 3.DEFINITIONS AND ABBREVIATIONS6 3.1Definitions6 3.2Abbreviations8 4.SERVICE - INDEPENDENT PROTOCOLS13 4.1General Definitions and Information Elements13 4.2Specification in ASN.121 5.ADP FOR
17、 SERVICE - INDEPENDENT MESSAGES27 5.1General Definitions and Information Elements27 5.2Specification in ASN.133 BIBLIOGRAPHY42 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 04:05:12 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CEN/TS 14821-4:2003 (E) 3 Foreword
18、This document (CEN/TS 14821-4:2003) has been prepared by Technical Committee CEN/TC 278 “ Road transport and traffic telematics “, the secretariat of which is held by NEN, in collaboration with Technical Committee ISO/TC 204 “ Transport information and control This Technical Specification was prepar
19、ed by Working Group 7 of CEN TC278. In the field of Traffic and Traveller Information, the innovative rate is high, with many research and development projects under way in many countries, and there is a need to establish prospective standards which allow manufacturers to introduce competitive produ
20、cts to the market in the knowledge that they can accommodate the future issues of the standard(s) without fundamental change to equipment. No known national technical specifications (identical or conflicting) exist on this subject. CEN/TS 14821 consists of eight parts; one part describing the framew
21、ork and seven parts providing detailed specifications of all components, protocols and services that are within the scope of CEN/TS 14821. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to announce this CEN Technical Speci
22、fication: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: London South Bank University, London South Bank Unive
23、rsity, Sat Dec 09 04:05:12 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CEN/TS 14821-4:2003 (E) 4 Introduction Traffic and Traveller Information (TTI) may be disseminated through a number of services or means of communication, covering static displays, portable terminals and in-vehicle equipment. For
24、all such services, the data to be disseminated, and the message structure involved in the various interfaces, require clear definition and standards formats in order to allow competitive products to operate with any received data. This technical specification focuses on an application data specifica
25、tion whereby data is produced at a central location and is disseminated via a cellular radio network. It addresses the data specifications for both downlink and uplink existing between a central location and randomly located vehicles. It enables messages to be exchanged between different systems and
26、 service providers adopting a variety of applications specifications. Other technical specifications are being produced by the CEN TC278 Working Group 4 to cover TTI dissemination via other means or services. This set of specifications is named GATS (Global Automotive Telematics Standard). GATS prov
27、ides the modular framework for implementing such traffic telematics services on an open technology platform and is network - independent. In many details definitions are necessary to ensure interoperability. Therefore, those detailed definitions are given in a network-specific part (CEN/TS 14821-8).
28、 With the development of future mobile communication systems towards UMTS / IMT2000 the bottleneck of narrow-band data communication might fade. Due to its modular structure, the GATS framework and applications are prepared for that due to its network- independence. The same holds for emerging techn
29、ologies for positioning which today is almost exclusively based on GPS. Other relevant standard developments are, independent from telematics, the application-independent Wireless Application Protocol (WAP), enabling mobile access to the Internet. It is understood that these emerging technologies mi
30、ght fit into the framework of telematics applications in future WAP-versions. For the time being, GATS already today independently from WAP enables access to telematics services. Utilisation of GATS on a WAP protocol stack and identifying necessary adaptation of WAP specifications (if any) is curren
31、tly under investigation of the appropriate groups within WAP-Forum and GATS-Forum. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 04:05:12 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CEN/TS 14821-4:2003 (E) 5 1. Scope This technical specification defines the spe
32、cific interfaces and functionality of traffic telematics (TT) services based on the use of cellular networks. Device manufacturers are enabled to develop terminal equipment compatible to services based on this standard. This will allow for interoperability of different terminal equipment and service
33、 providers which allows competition between service providers and terminal manufacturers. Furthermore it sets the scene for international availability of these services. This technical specification specifies TT-specific interfaces between terminal and service centre. This especially incorporates th
34、e message sets of the application data protocols and the service-independent communication handling (including conditional access and transport protocols). Functionality, procedures and requirements of basic terminal components as well as their interaction with the service centre. This especially co
35、mprises conditional access and security mechanisms. Service Specifications, which are essential to ensure consistent behaviour of terminal and service centre. The services incorporated within this issue comprise: breakdown and emergency services interactive traffic information services broadcast tra
36、ffic information services navigation services (route assistance, route advice, homing) operator services general information services floating car data collection It is envisaged that future research and development will lead to improvements on the services listed above as well as to the creation of
37、 new services. Nevertheless this technical specification provides the framework for seamless integration of new features and services into the existing architecture. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 04:05:12 GMT+00:00 2006, Uncontrolled Copy, (c)
38、BSI CEN/TS 14821-4:2003 (E) 6 2. Normative references Not applicable. 3. Definitions and abbreviations 3.1 Definitions For the purposes of this technical specification, the following terms and definitions apply: 3.1.1 Attribute (of a Traffic Information Message) A Traffic Information Message is made
39、 up of separate parts that can be called attributes. This includes, for example, an item of information and a length of validity. 3.1.2 Authorisation Reciprocal proof that the identity provided by the communications partner is valid 3.1.3 Broadcast Service Data service within a cellular wireless net
40、work that allows for mono-directional dissemination of data from a service centre to multiple users in the area of signal reception 3.1.4 Bypass Description Representation of a Bypass, consisting of a Bypass Hint and/or a Bypass Route. 3.1.5 Bypass Hint Representation of a hint for a Bypass 3.1.6 By
41、pass Link Prominent waypoints on a Bypass Route 3.1.7 Bypass Route Representation of the route for a Bypass 3.1.8 Cell Broadcast Broadcast service of the GSM network 3.1.9 Data telegram Digital message exchanged between two systems 3.1.10 Delivery Notification Network acknowledgement for successful/
42、 unsuccessful delivery of a message to the mobile device 3.1.11 Functional Road Class A classification based on the importance of the road element in the connectivity of the total road network 3.1.12 Functional Road Class 0 Motorways 3.1.13 Functional Road Class 1 All non-Motorways that are part of
43、a connection used for nation wide traffic and transport Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 04:05:12 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CEN/TS 14821-4:2003 (E) 7 3.1.14 Geocode Geocodes are unique identifiers unmistakably defining important p
44、oints on road networks. Geocodes can be derived from / converted into WGS84 co-ordinates by the algorithm described in CEN/TS 14821- 3. 3.1.15 Hardware service agents Partner companies of the traffic telematics service providers who are authorised to install onboard equipment into vehicles and to ma
45、intain it 3.1.16 Homing Simple form of guidance to destination, in which the direction and straight-line distance of the destination are indicated 3.1.17 Information Element Information unit of a message 3.1.18 Intersection Junction of two or more roads 3.1.19 Length of a Speech Report Length of a S
46、peech Report, including pauses, in tenths of a second 3.1.20 Mobile Originated Data telegram sent from the onboard equipment to the Service Centre. 3.1.21 Mobile Terminated Data telegram sent by the Service Centre to the onboard equipment. 3.1.22 Onboard equipment A system, generally mobile, interac
47、ting with the service centre to handle traffic telematics services 3.1.23 Road Junction Intersection of two or more roads 3.1.24 Route description Description of a route showing the geometry of street intersections, manoeuvre instructions, street and place names, and geographical co-ordinates 3.1.25
48、 Service centre System produced by the traffic telematics operators / service providers to handle traffic telematics services 3.1.26 Short Message Service Packet-based form of data transfer within the GSM network 3.1.27 Speech connection Communications channel between two systems for the bi-directio
49、nal transmission of speech Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 04:05:12 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CEN/TS 14821-4:2003 (E) 8 3.1.28 Speech Report Traffic Information Report transmitted by a speech system 3.1.29 Terminal Device Generally mobile system interacting with the service centre for implementation of telematics services 3.1.30 TINFO Traffic Information Report 3.1.31 TINFO Version Unique identification of a Traffic Messag