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  • European Telecommunications Standards Institute

    EN 301 234 V1.1.1 (1998-01) European Standard (Telecommunications series)

    Digital Audio Broadcasting (DAB); Multimedia Object Transfer (MOT) protocol

    EBU UER

    European Broadcasting Union Union Européenne de Radio-Télévision

  • EN 301 234 V1.1.1 (1998-01)2

    Reference DEN/JTC-DAB-MOT (bfc00ico.PDF)

    Keywords DAB, digital, audio, broadcasting, multimedia,

    protocol

    ETSI Secretariat

    Postal address F-06921 Sophia Antipolis Cedex - FRANCE

    Office address 650 Route des Lucioles - Sophia Antipolis

    Valbonne - 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 à but non lucratif enregistrée à la Sous-Préfecture de Grasse (06) N° 7803/88

    X.400 c= fr; a=atlas; p=etsi; s=secretariat

    Internet [email protected] http://www.etsi.fr

    Copyright Notification

    No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media.

    © European Telecommunications Standards Institute 1998. © European Broadcasting Union 1998.

    All rights reserved.

  • EN 301 234 V1.1.1 (1998-01)3

    Contents

    Intellectual Property Rights................................................................................................................................4

    Foreword ............................................................................................................................................................4

    1 Scope........................................................................................................................................................5

    2 Normative references ...............................................................................................................................5

    3 Definitions and abbreviations ..................................................................................................................7 3.1 Definitions ......................................................................................................................................................... 7 3.2 Abbreviations..................................................................................................................................................... 8

    4 General description of the MOT protocol................................................................................................9 4.1 Requirements of Multimedia services................................................................................................................ 9 4.2 Problems MOT is attempting to solve ............................................................................................................... 9 4.3 Receiver architecture reference model............................................................................................................. 10

    5 Object description ..................................................................................................................................11 5.1 Header core...................................................................................................................................................... 11 5.2 Header extension.............................................................................................................................................. 12 5.2.1 Structure of the header extension ............................................................................................................... 13 5.2.2 Future expansion of the parameter data field ............................................................................................. 14 5.2.3 Parameters of the header extension ............................................................................................................ 14 5.3 Object body...................................................................................................................................................... 16

    6 Object transport mechanisms.................................................................................................................17 6.1 Segmentation of objects - transport level......................................................................................................... 18 6.1.1 Segmentation header .................................................................................................................................. 19 6.1.2 Transport of header segments..................................................................................................................... 19 6.1.3 Transport of body segments ....................................................................................................................... 19 6.2 Packetizing segments - network level .............................................................................................................. 20 6.2.1 Packet mode ............................................................................................................................................... 20 6.2.2 X-PAD ....................................................................................................................................................... 20 6.2.2.1 Indication of the Data Group Length .................................................................................................... 20 6.3 Different methods of transferring MOT objects............................................................................................... 22 6.3.1 Repetition on object level........................................................................................................................... 22 6.3.2 Insertion of additional header information ................................................................................................. 23 6.3.3 Interleaving objects in one MOT stream.................................................................................................... 23 6.3.4 Repetition of Data Groups/segments.......................................................................................................... 24

    7 Updating.................................................................................................................................................24 7.1 Object update................................................................................................................................................... 24 7.2 Updating header information/triggering objects .............................................................................................. 24 7.2.1 Triggering an object ................................................................................................................................... 25 7.2.2 Deletion of an object .................................................................................................................................. 25

    History ..............................................................................................................................................................26

  • EN 301 234 V1.1.1 (1998-01)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 in ETR 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards", which is available free of charge from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http://www.etsi.fr/ipr).

    Pursuant to the ETSI Interim 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 ETR 314 (or the updates on http://www.etsi.fr/ipr) which are, or may be, or may become, essential to the present document.

    Foreword This European Standard (Telecommunications series) has been produced by the Joint Technical Committee (JTC) of the European Broadcasting Union (EBU), Comité Européen de Normalisation ELECtrotechnique (CENELEC) and the European Telecommunications Standards Institute (ETSI).

    NOTE 1: The EBU/ETSI JTC was established in 1990 to co-ordinate the drafting of standards in the specific field of broadcasting and related fields. Since 1995 the JTC became a tripartite body by including in the Memorandum of Understanding also CENELEC, which is responsible for the standardization of radio and 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 broadcasting 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 DAB system is a novel sound broadcasting system intended to supersede the existing analogue amplitude and frequency modulation systems. It is a rugged, yet highly spectrum and power efficient sound and data broadcasting system. It has been designed for terrestrial and satellite as well as for hybrid and mixed delivery. The DAB system has been publicly demonstrated on a number of occasions during its development. It has been subject to extensive field tests and computer simulations in Europe and elsewhere. In 1995, the

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