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ETSI TR 101 790 V1.4.1 (2009-07) Technical Report

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ETSI TR 101 790 V1.4.1 (2009-07) Technical Report ETSI TR 101 790 V1.4.1 (2009-07) Technical Report Digital Video Broadcasting (DVB); Interaction channel for Satellite Distribution Systems; Guidelines for the use of EN 301 790 European Broadcasting Union Union Européenne de Radio-Télévision EBU·UER 2 ETSI TR 101 790 V1.4.1 (2009-07) Reference RTR/JTC-DVB-239 Keywords broadcast, digital, DVB, satellite, TV 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 à but non lucratif enregistrée à la Sous-Préfecture de Grasse (06) N° 7803/88 Important notice Individual copies of the present document can be downloaded from: http://www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF). In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at http://portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following services: http://portal.etsi.org/chaircor/ETSI_support.asp 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 2009. © European Broadcasting Union 2009. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTM, TIPHONTM, the TIPHON logo and the ETSI logo are Trade Marks of ETSI registered 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. LTE™ is a Trade Mark of ETSI currently being registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI 3 ETSI TR 101 790 V1.4.1 (2009-07) Contents Intellectual Property Rights................................................................................................................................9 Foreword...........................................................................................................................................................10 Introduction ......................................................................................................................................................10 1 Scope ......................................................................................................................................................12 2 References ..............................................................................................................................................12 2.1 Normative references .......................................................................................................................................13 2.2 Informative references......................................................................................................................................13 3 Definitions, symbols and abbreviations .................................................................................................16 3.1 Definitions........................................................................................................................................................16 3.2 Symbols............................................................................................................................................................17 3.3 Abbreviations ...................................................................................................................................................17 4 Reference models ...................................................................................................................................20 4.1 Architecture with co-located NCC, Gateway and Feeder.................................................................................20 4.2 Architecture with multiple feeders ...................................................................................................................21 4.3 Architecture with transparent mesh connectivity .............................................................................................21 4.4 Architecture with regenerative satellites ..........................................................................................................22 4.4.1 On board switching requirements ...............................................................................................................25 4.4.2 RSMS Network Architecture......................................................................................................................25 5 Forward link ...........................................................................................................................................26 5.1 Assignment and selection of FL elementary streams .......................................................................................27 5.2 Specific use of FL tables and formats ..............................................................................................................28 5.2.1 FL service specification in PMT.................................................................................................................28 5.2.1 Optional use of SDT ...................................................................................................................................28 5.2.2 Assumptions concerning IP encapsulation .................................................................................................28 5.3 Applicability of SI Tables in RSMS systems ...................................................................................................29 6 Return link..............................................................................................................................................29 6.1 RCST synchronization .....................................................................................................................................29 6.1.1 RCST internal delay compensation ............................................................................................................30 6.1.2 NCR interpretation for DVB-S2 .................................................................................................................30 6.1.3 DVB-S2 TX implementation aspects..........................................................................................................31 6.1.4 DVB-S2 RX implementation aspects .........................................................................................................32 6.1.5 VCM/ACM aspects and Multiple TS aspects.............................................................................................32 6.1.6 Combining TS and GS................................................................................................................................32 6.2 Burst format......................................................................................................................................................33 6.2.1 Contention access .......................................................................................................................................33 6.2.2 Acquisition Bursts ......................................................................................................................................33 6.2.3 Determination of the implicit number of MPEG2 packets in a burst..........................................................33 6.2.4 Application of MPE in the return link ........................................................................................................34 6.3 Randomization for energy dispersal.................................................................................................................34 6.4 Coding ..............................................................................................................................................................34 6.4.1 CRC error detection code ...........................................................................................................................34 6.4.1.1 CRC coding example ............................................................................................................................34 6.4.2 Reed Solomon outer coding........................................................................................................................35 6.4.3 Convolutional inner coding ........................................................................................................................35 6.4.4 Turbo code..................................................................................................................................................35 6.4.4.1 General principles of coding and decoding...........................................................................................35 6.4.4.2 Puncturing examples for DVB-RCS Turbo Code .................................................................................37 6.4.4.3 Implementation trade-offs.....................................................................................................................40
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