CEN/TS 14821-5:2003

SLOVENSKI STANDARD
01-oktober-2003
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Traffic and Travel Information (TTI) - TTI messages via cellular networks - Part 5:
Internal services
Verkehrs- und Reiseinformationen (TTI)-TTI-Nachrichten über mobile - Teil 5: Interne
Dienste
Ta slovenski standard je istoveten z: CEN/TS 14821-5:2003
ICS:
35.240.60 Uporabniške rešitve IT v IT applications in transport
transportu in trgovini and trade
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL SPECIFICATION
CEN/TS 14821-5
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
May 2003
ICS 35.240.60
English version
Traffic and Travel Information (TTI) - TTI messages via cellular
networks - Part 5: Internal services
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. After 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
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, Greece,
Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2003 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 14821-5:2003 E
worldwide for CEN national Members.

Table of contents
PAGE
TABLE OF CONTENTS 2
FOREWORD 3
INTRODUCTION 4
1. SCOPE 5
2. NORMATIVE REFERENCES 6
3. DEFINITIONS AND ABBREVIATIONS 7
3.1 Definitions 7
3.2 Abbreviations 9
4. SPECIFICATION OF INTERNAL SERVICES – CONFIGURATION AND MASTER DATA UPDATE14
4.1 Goal of the Service 14
4.2 Access Management 14
4.3 Master Data Management 14
4.4 Key Management 14
4.5 Function Contents and Handling of Access Management 15
4.6 General 16
4.7 Configuration Request initiated by the Onboard Equipment 16
4.8 Configuration Update sent by the Service Center 17
4.9 Handling Sequence of Access Management 26
4.10 Requirements for the Onboard Equipment 33
4.11 Function Contents and Handling of Master Data Management 34
5. SPECIFICATION OF KEY MANAGEMENT AND SECURITY 36
5.1 Descriptions for Operators 36
5.2 Roles in Key Management 36
5.3 Encryption of User Data 43
5.4 Key Exchange Procedures 48
5.5 Cryptographic Function in the Onboard Equipment 61
6. ADP FOR CAS FUNCTIONALITY -CONFIGURATION AND KEY MANAGEMENT 65
6.1 General Definitions and Information Elements 65
6.2 Configuration Management 67
6.3 Key Management 73
6.4 ADP for CAS Functionality -Configuration and Key Management - Specification in ASN.1 82
7. SPECIFICATION OF DIAGNOSTIC SERVICES 94
7.1 Goal of the Service 94
7.2 Function Contents and Handling of Diagnosis Functions 94
7.3 Communications Flow between On-Board Equipment and TT Call Office 95
7.4 Requirements for the Onboard Equipment 96
8. ADP FOR DIAGNOSTIC SERVICES - GENERAL DEFINITIONS AND INFORMATION
ELEMENTS 97
8.1 General 97
8.2 Diagnostic Request Message 97
8.3 Diagnostic Message 99
8.4 ADP for Diagnostic Services - Specification in ASN.1 101
BIBLIOGRAPHY 104
Foreword
This document (CEN/TS 14821-5:2003) 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 systems".
This technical specification was prepared 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 products to the market in the knowledge that they can
accommodate the future issues of the standard(s) without fundamental change to equipment.
In accordance with the CEN/CENELEC “Internal Regulations Part 2: Common Rules for standards work,
04-1996“ the original copyright holders on the complete set of documents are Mannesmann Autocom
GmbH and TEGARON Telematics GmbH. The original copyright holders hereby grant CEN all
necessary rights with regard to said original copyrights to execute the standardisation process as
described below.
No known national technical specifications (identical or conflicting) exist on this subject.
CEN/TS 14821 consists of eight parts; one part describing the framework 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 Specification: 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.
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 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 specification 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 service providers adopting a variety of
applications specifications.
Other techncial 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 provides 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). 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 technologies 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 might 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 currently under investigation of the appropriate groups within WAP-Forum and GATS-Forum.
1. Scope
This CEN/TS defines the specific 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 technical specification. This will allow for interoperability of different
terminal equipment and service 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 the

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 comprises 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 traffic 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 new services. Nevertheless this technical specification provides the
framework for seamless integration of new features and services into the existing architecture.
2. Normative references
This Technical Specification incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of
these publications apply to this Technical Specification only when incorporated in it by amendment or
revision. For undated references the latest edition of the publication referred to applies (including
amendments).
ISO/IEC 9797-1 Information technology -- Security techniques -- Message Authentication
Codes (MACs) -- Part 1: Mechanisms using a block cipher
ISO/IEC 9797-2:2002 Information technology -- Security techniques -- Message Authentication
Codes (MACs) -- Part 2: Mechanisms using a dedicated hash-function
ISO/IEC 10116 Information technology – Security techniques - Modes of operation for an n-
bit block cipher
ISO/IEC 10118-1:2000 Information technology - Security techniques – Hash-functions – Part 1:
General
ISO/IEC 10118-2 Information technology – Security techniques – Hash-functions – Part 2:
Hash-functions using an n-bit block cipher
ISO 11568-3: Banking - Key management (retail) - Part 3: Key life cycle for symmetric
ciphers
PKCS#1: RSA Encryption Standard, RSA Labs Technical Notes, Version 1.5, Nov. 1993
CCITT, Annex A to CCITT Blue Book Rec. E212
3. Definitions and abbreviations
3.1 Definitions
For the purposes of this CEN/TS, the following terms and definitions apply:
3.1.1 Attribute (of a Traffic Information Message)
A Traffic Information Message is made 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 network 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 Bypass 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/ 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 a connection used for nation wide traffic and transport
3.1.14 Geocode
Geocodes are unique identifiers unmistakably defining important points 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 maintain 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 Speech 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, interacting 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 Service centre
System produced by the traffic telema
...