Tr 101 545-4 V1.1.1 (2014-04)
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ETSI TR 101 545-4 V1.1.1 (2014-04) Technical Report Digital Video Broadcasting (DVB); Second Generation DVB Interactive Satellite System (DVB-RCS2); Part 4: Guidelines for Implementation and Use of EN 301 545-2 2 ETSI TR 101 545-4 V1.1.1 (2014-04) Reference DTR/JTC-DVB-324-4 Keywords DVB, interaction, satellite 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 The present document can be downloaded from: http://www.etsi.org The present document may be made available in electronic versions and/or in print. The content of any electronic and/or print versions of the present document shall not be modified without the prior written authorization of ETSI. 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ETSI 3 ETSI TR 101 545-4 V1.1.1 (2014-04) Contents Intellectual Property Rights .............................................................................................................................. 11 Foreword........................................................................................................................................................... 11 Introduction ...................................................................................................................................................... 11 1 Scope ...................................................................................................................................................... 13 2 References .............................................................................................................................................. 13 2.1 Normative references ....................................................................................................................................... 13 2.2 Informative references ..................................................................................................................................... 13 3 Definitions, symbols and abbreviations ................................................................................................. 17 3.1 Definitions ....................................................................................................................................................... 17 3.2 Symbols ........................................................................................................................................................... 17 3.3 Abbreviations ................................................................................................................................................... 18 4 Reference Model .................................................................................................................................... 22 4.1 Architecture with co-located NCC, Gateway and Feeder ................................................................................ 22 4.2 Architecture with multiple feeders ................................................................................................................... 23 4.3 Architecture with transparent mesh connectivity ............................................................................................. 23 4.4 Architecture with regenerative satellites .......................................................................................................... 24 4.4.1 On board switching requirements ............................................................................................................... 25 4.5 Encapsulation Scenarios .................................................................................................................................. 27 4.6 Reference model for mobile Scenarios ............................................................................................................ 29 4.6.1 Line-Of-Sight Scenarios ............................................................................................................................. 30 4.6.1.1 Maritime ............................................................................................................................................... 30 4.6.1.2 Aeronautical ......................................................................................................................................... 30 4.6.2 Non-LOS Scenarios ................................................................................................................................... 30 4.6.2.1 Railway ................................................................................................................................................. 30 4.6.2.2 Vehicular .............................................................................................................................................. 31 5 Forward Link .......................................................................................................................................... 31 5.1 Forward Link Considerations .......................................................................................................................... 31 5.1.1 General Notes on ACM Operation ............................................................................................................. 31 5.1.2 FEC Frame Size Selection .......................................................................................................................... 32 5.1.3 Receiver Operation ..................................................................................................................................... 32 5.1.4 Pilot Symbols ............................................................................................................................................. 32 5.1.5 Restrictions on Transmitting DVB-S2 Dummy Frames ............................................................................. 32 5.1.6 GSE Fragmentation .................................................................................................................................... 33 5.1.7 Explicit Integrity Protection of SDU .......................................................................................................... 33 5.1.7.1 Background........................................................................................................................................... 33 5.2 Forward Link L2S Considerations ................................................................................................................... 35 5.2.1 L2S Insertion .............................................................................................................................................. 35 5.2.2 NCR Insertion ............................................................................................................................................ 35 5.2.3 FL L2S Components .................................................................................................................................. 35 5.2.3.1 NIT ....................................................................................................................................................... 36 5.2.3.2 SCT/FCT2/BCT/TBTP2 ....................................................................................................................... 36 6 Return Link ............................................................................................................................................ 40 6.1 Fixed-RCST Physical Layer Synchronization ................................................................................................. 40 6.1.1 DVB S2 Receiver implementation aspects ................................................................................................. 40 6.2 Mobile RCST Synchronization ........................................................................................................................ 41 6.2.1 Doppler shift and time drift .......................................................................................................................