1、 Draft ETSI TS 102 368 V1.1.1 (2005-01)Technical Specification Digital Audio Broadcasting (DAB);DAB-TMC (Traffic Message Channel)European Broadcasting Union Union Europenne de Radio-Tlvision EBUUER ETSI Draft ETSI TS 102 368 V1.1.1 (2005-01) 2 Reference DTS/JTC-DAB-31 Keywords broadcasting, DAB, dig
2、ital 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 document
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6、zation work undertaken within ETSI. The copyright and the foregoing restrictions extend to reproduction in all media. European Telecommunications Standards Institute 2005. All rights reserved. DECTTM, PLUGTESTSTM and UMTSTM are Trade Marks of ETSI registered for the benefit of its Members. TIPHONTMa
7、nd the TIPHON logo are Trade Marks currently being registered by ETSI 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. ETSI Draft ETSI TS 102 368 V1.1.1 (2005-01) 3 Contents Intellectual Property Rights4
8、 Foreword.4 Introduction 4 1 Scope 6 2 References 6 3 Definitions and abbreviations.6 3.1 Definitions6 3.2 Abbreviations .8 4 DAB-TMC specification 9 4.1 DAB-TMC service component in the FIDC.9 5 Coding of DAB-TMC messages 10 5.1 Mapping of 37-bit TMC messages .11 5.2 Mapping of 16-bit TMC messages
9、.12 6 DAB-TMC signalling.13 6.1 Format of FIG 0/2 (Service Organization) for DAB-TMC 13 6.2 Format of FIG 0/13 (User Application information) for DAB-TMC.14 6.3 Other mandatory operational requirements 15 Annex A (informative): Recommendations17 Annex B (informative): Bibliography.18 History 19 ETSI
10、 Draft ETSI TS 102 368 V1.1.1 (2005-01) 4 Intellectual Property Rights IPRs essential or potentially essential 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
11、in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified 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
12、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 Web server) which are, or may be, or may become, essential to the present document. Forew
13、ord This Technical Specification (TS) has been produced by the Joint Technical Committee (JTC) Broadcast of the European Broadcasting Union (EBU), Comit Europen de Normalization ELECtrotechnique (CENELEC) and the European Telecommunications Standards Institute (ETSI) NOTE 1: The EBU/ETSI JTC Broadca
14、st was established in 1990 to co-ordinate the drafting of standards in the specific field of broadcasting and related fields. Since 1995 the JTC Broadcast became a tripartite body by including in the Memorandum of Understanding also CENELEC, which is responsible for the standardization of radio and
15、television receivers. The EBU is a professional association of broadcasting organizations whose work includes the co-ordination of its members activities in the technical, legal, programme-making and programme-exchange domains. The EBU has active members in about 60 countries in the European broadca
16、sting area; its headquarters is in Geneva. European Broadcasting Union CH-1218 GRAND SACONNEX (Geneva) Switzerland Tel: +41 22 717 21 11 Fax: +41 22 717 24 81 The Eureka Project 147 was established in 1987, with funding from the European Commission, to develop a system for the broadcasting of audio
17、and data to fixed, portable or mobile receivers. Their work resulted in the publication of European Standard, EN 300 401 1, for DAB (see note) which now has worldwide acceptance. The members of the Eureka Project 147 are drawn from broadcasting organizations and telecommunication providers together
18、with companies from the professional and consumer electronics industry. NOTE 2: DAB is a registered trademark owned by one of the Eureka Project 147 partners. Introduction The Traffic Message Channel (TMC) was originally designed for transport in the narrow-band Radio Data System (RDS) services in F
19、M broadcast (see IEC 62106 5). TMC messages provide a valuable information service to motorists. DAB enables TMC messages to be carried in a much faster and bitrate-efficient way. A uniform nation-wide traffic report is possible thanks to the shorter cycle times of DAB-TMC as compared to RDS-TMC. Co
20、mpared to RDS-TMC, DAB-TMC features several advantages: DAB-TMC has a cycle time that is much shorter than RDS-TMC. This can be used to shorten the acquisition time at the DAB receiver or to increase the amount of transmitted messages. DAB-TMC is very robust against multipath thanks to its COFDM mod
21、ulation scheme. DAB-TMC allows easy filtering of TMC messages according to selected regions. ETSI Draft ETSI TS 102 368 V1.1.1 (2005-01) 5 The DAB-TMC messages, carried in FIG 5/1, are assembled together with other FIGs in Fast Information Blocks (FIBs). Each FIB has a strong error protection of 2 b
22、ytes Cyclic Redundancy Check (CRC) per 32 bytes of data. Moreover the Fast Information Channel (FIC) features an extra error protection thanks to the convolutional code rate of 1/3. The FIC data are not time-interleaved so that the TMC data can be obtained fast. The net data rate in the FIC is 32 kb
23、it/s. ETSI Draft ETSI TS 102 368 V1.1.1 (2005-01) 6 1 Scope The DAB-TMC specification defined in the present document provides DAB with the ability to transport TMC messages using the DAB Fast Information Data channel (FIDC). The TMC user and system messages which are encoded according to ISO 14819-
24、1 4 are carried in Extension 1of FIG type 5 (FIG 5/1). 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. References are either specific (identified by date of publication and/or edition number or version numb
25、er) or non-specific. For a specific reference, subsequent revisions do not apply. For a non-specific reference, the latest version applies. Referenced documents which are not found to be publicly available in the expected location might be found at http:/docbox.etsi.org/Reference. 1 ETSI EN 300 401:
26、 “Radio broadcasting systems; Digital Audio Broadcasting (DAB) to mobile, portable and fixed receivers“. 2 ETSI TS 101 756: “Digital Audio Broadcasting (DAB); Registered Tables“. 3 ETSI TR 101 496-2: “Digital Audio Broadcasting (DAB); Guidelines and rules for implementation and operation“. 4 ISO 148
27、19-1: “Traffic and Traveller Information (TTI) - TTI messages via traffic message coding - Coding protocol for Radio Data System - Traffic message Channel (RDS-TMC). 5 IEC 62106: “Specification of the radio data system (RDS) for VHF/FM sound broadcasting in the frequency range from 87,5 to 108,0 MHz
28、. 6 EN ISO 14819-6: “Traffic and Traveller Information (TTI) - TTI Messages via Traffic Message Coding - Part 6: Encryption and conditional access for the Radio Data System - Traffic Message Channel ALERT C coding“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present docu
29、ment, the following terms and definitions apply: Access Control System (ACS): particular set of rules for managing entitlement checking and conditional access messages Conditional Access (CA): mechanism by which user access to service components can be restricted DAB-TMC system message: 16 bit field
30、 comprising a part of TMC system information DAB-TMC user message: 37 bit field comprising either a TMC User message, TMC tuning information, an Encryption Administration Group (EAG) or future TMC applications conveyed in ODA groups requiring 37 bits mapping data service: service which comprises a n
31、on-audio primary service component and optionally additional secondary service components ETSI Draft ETSI TS 102 368 V1.1.1 (2005-01) 7 Encryption Administration Group (EAG): RDS type 8A group which comprises details of the encryption parameters such as the Service IDentifier (SID), the ENCryption I
32、Dentifier (ENCID) and the Location Table Number Before Encryption (LTNBE) Fast Information Block (FIB): data burst of 256 bits NOTE: The sequence of FIBs is carried by the Fast Information Channel. The structure of the FIB is common to all transmission modes. Fast Information Channel (FIC): part of
33、the transmission frame, comprising the Fast Information Blocks, which contains the multiplex configuration information together with optional service Information and data service components Fast Information Data Channel (FIDC): dedicated part of the Fast Information Channel which is available for no
34、n-audio related data services, such as paging Fast Information Group (FIG): package of data used for one application in the Fast Information Channel NOTE: Eight different types are available to provide a classification of the applications. Location Table Number (LTN): number to identify the location
35、 table used by the service provider multi-group messages: sequences of between two and five TMC single group messages that constitute a detailed TMC message Personal Identification Number (PIN): numeric or alphanumeric code required to be entered into a terminal before that terminal is permitted to
36、present decrypted TMC messages primary service component: first and mandatory component of a service NOTE: It can be used as a default selection in the receiver. secondary service component: in case a service contains more than the primary service component, the additional service components are sec
37、ondary service components service: user-selectable output, which can be either a programme service or a data service service component: part of a service which carries either audio or data NOTE: Each service component is carried either in a sub-channel or in the Fast Information Data Channel (FID).
38、Service Identifier (SId): 16- or 32-bit code used to identify a particular DAB service Service IDentifier (SID): 6-bit code uniquely identifying a TMC Service service label: alphanumeric characters associated with a particular service and intended for display in a receiver sub-channel: part of the M
39、ain Service Channel, which is individually convolutionally encoded and comprises an integral number of Capacity Units per Common Interleaved Frame TMC system information: information that enables a TMC product to decode and evaluate essential data, which describes the transmission, being received e.
40、g. AID, LTN, SID, MGS TMC system message: message comprising either TMC system information or TMC tuning information TMC tuning information: information that a TMC product needs to change from one transmitter to another if the signal becomes weak TMC user message: message comprising parameters of th
41、e actual traffic message such as the Location code and the Event code ETSI Draft ETSI TS 102 368 V1.1.1 (2005-01) 8 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: AID Application identification (TMC) ALERT-C Advice and problem Location for European Roa
42、d Traffic-version C CA Conditional Access CAId Conditional Access Identifier CRC Cyclic Redundancy Check DAB Digital Audio BroadcastingDSCTy Data Service Component Type EAG Encryption Administration Group (TMC) EBU European Broadcasting Union ECC Extended Country Code ENCID ENCryption IDentifier FI
43、Frequency Information FIB Fast Information Block FIC Fast Information Channel FIDC Fast Information Data Channel FIDCId Fast Information Data Channel Identifier FIG Fast Information Group GPS Global Positioning SystemIEC International Electrotechnical Commission ISO International Organization for St
44、andardization LTN Location Table Number (TMC) LTNBE Location Table Number Before Encryption LTO Local Time Offset MGS Message Geographical Scope (TMC) MJD Modified Julian Date MSC Main Service Channel ODA Open Data Application (RDS) PI Programme Identification code (RDS) PIN Personal Identification
45、Number RDS Radio Data System SCIdS Service Component Identifier within the Service SFN Single Frequency Network SId Service Identifier (DAB) SID Service IDentifier (TMC) SPN Service Provider Name (TMC) TCId Type Component Identifier TII Transmitter Identification Information TMC Traffic Message Chan
46、nel TMId Transport Mechanism Identifier UA User Application UTC Co-ordinated Universal Time ETSI Draft ETSI TS 102 368 V1.1.1 (2005-01) 9 4 DAB-TMC specification The DAB-TMC specification defined in the present document provides DAB with the ability to transport TMC messages using the DAB Fast Infor
47、mation Data channel (FIDC). The TMC User and System messages which are encoded according to the protocol described in ISO 14819-1 4, are carried in Extension 1of FIG type 5 (FIG 5/1). 4.1 DAB-TMC service component in the FIDC In DAB each service may contain one or more service components. The essent
48、ial service component of a service is called the primary service component. Normally this would carry the audio, but data service components can be primary as well. All other service components are optional and are called secondary service components. An example of a service structure is shown in fi
49、gure 1. The service identified by the service label “ALPHA 1 RADIO“ comprises two service components: a primary audio component and a secondary data component. The secondary service component is used for a Traffic Message Channel (ALPHA-TMC). The audio component is carried in a sub-channel in the Main Service Channel (MSC), whereas the TMC is carried in the Fast Information Data Channel (FIDC) within the Fast Information Channel (FIC). The service organization allows service components to be shared by different services. It also allows t
