SIST EN 301 790 V1.3.1:2003

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Digitalna videoradiodifuzija (DVB) – Povratni kanal za satelitske distribucijske sistemeDigital Video Broadcasting (DVB); Interaction channel for satellite distribution systems33.170Televizijska in radijska difuzijaTelevision and radio broadcasting33.070.40SatelitSatelliteICS:Ta slovenski standard je istoveten z:EN 301 790 Version 1.3.1SIST EN 301 790 V1.3.1:2003en01-december-2003SIST EN 301 790 V1.3.1:2003SLOVENSKI

ETSI EN 301 790 V1.3.1 (2003-03)European Standard (Telecommunications series) Digital Video Broadcasting (DVB);Interaction channel for satellite distribution systems European Broadcasting Union Union Européenne de Radio-Télévision EBU·UER

Reference REN/JTC-DVB-138 Keywords broadcasting, DVB, interaction, satellite ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE

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

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© European Telecommunications Standards Institute 2003. © European Broadcasting Union 2003. All rights reserved.

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Contents Intellectual Property Rights................................................................................................................................7 Foreword.............................................................................................................................................................7 1 Scope........................................................................................................................................................8 2 References................................................................................................................................................8 3 Definitions, symbols and abbreviations...................................................................................................9 3.1 Definitions..........................................................................................................................................................9 3.2 Symbols..............................................................................................................................................................9 3.3 Abbreviations...................................................................................................................................................10 4 Reference models for satellite interactive networks in DVB.................................................................11 4.1 Protocol stack model........................................................................................................................................11 4.2 System model...................................................................................................................................................12 4.3 Reference model of the Satellite Interactive Network......................................................................................13 5 Forward link...........................................................................................................................................14 6 Return link base-band physical layer specification and multiple access definition...............................15 6.1 RCST synchronization.....................................................................................................................................15 6.1.1 Timing control............................................................................................................................................15 6.1.2 Carrier synchronization...............................................................................................................................15 6.1.3 Burst synchronization.................................................................................................................................16 6.1.4 Symbol clock synchronization....................................................................................................................16 6.2 Burst format......................................................................................................................................................16 6.2.1 Traffic (TRF) burst formats........................................................................................................................16 6.2.1.1 ATM TRF burst....................................................................................................................................17 6.2.1.2 Optional MPEG2-TS TRF burst...........................................................................................................17 6.2.2 Synchronization and acquisition burst formats...........................................................................................17 6.2.2.1 Synchronization (SYNC) burst format..................................................................................................18 6.2.2.2 Acquisition (ACQ) burst.......................................................................................................................18 6.2.3 Common Signalling Channel (CSC) burst format......................................................................................19 6.2.4 Bit numbering and interpretation................................................................................................................20 6.2.5 Transmission order.....................................................................................................................................20 6.3 Randomization for energy dispersal.................................................................................................................21 6.4 Coding..............................................................................................................................................................21 6.4.1 CRC error detection code...........................................................................................................................21 6.4.2 Reed-Solomon outer coding.......................................................................................................................22 6.4.3 Convolutional inner coding........................................................................................................................22 6.4.4 Turbo code..................................................................................................................................................23 6.4.4.1 Description of the turbo code permutation............................................................................................24 6.4.4.2 Determination of the circulation states..................................................................................................25 6.4.4.3 Rates and puncturing map.....................................................................................................................25 6.4.4.4 Order of transmission and mapping to QPSK constellation..................................................................26 6.5 Modulation.......................................................................................................................................................27 6.5.1 Bit mapping to QPSK constellation............................................................................................................27 6.5.2 Baseband shaping and quadrature modulation............................................................................................27 6.5.3 EIRP control...............................................................................................................................................28 6.5.4 Guard time..................................................................................................................................................28 6.6 MAC messages.................................................................................................................................................28 6.6.1 Methods based on the Satellite Access Control (SAC) field......................................................................28 6.6.1.1 SAC field composition..........................................................................................................................28 6.6.1.2 Prefix method mechanism.....................................................................................................................29 6.6.1.3 Mini-slot method...................................................................................................................................29 6.6.1.4 Contention based mini-slot method.......................................................................................................29 6.6.2 Data Unit Labelling Method (DULM)........................................................................................................30 6.6.2.1 DULM with ATM-formatting...............................................................................................................30 6.6.2.2 DULM with MPEG-formatting.............................................................................................................32 SIST EN 301 790 V1.3.1:2003

6.6.3 Mini-slot method........................................................................................................................................33 6.6.4 Contention based mini-slot method............................................................................................................34 6.7 Multiple access.................................................................................................................................................34 6.7.1 MF-TDMA.................................................................................................................................................34 6.7.1.1 Fixed MF-TDMA..................................................................................................................................34 6.7.1.2 Dynamic MF-TDMA (Optional)...........................................................................................................34 6.7.1.3 Frequency range....................................................................................................................................35 6.7.2 Segmentation of the return link capacity....................................................................................................35 6.7.2.1 Superframes..........................................................................................................................................35 6.7.2.2 Frames...................................................................................................................................................36 6.7.2.3 Timeslots...............................................................................................................................................37 6.8 Capacity request categories..............................................................................................................................37 6.8.1 Continuous Rate Assignment (CRA)..........................................................................................................37 6.8.2 Rate Based Dynamic Capacity (RBDC).....................................................................................................37 6.8.3 Volume Based Dynamic Capacity (VBDC)...............................................................................................38 6.8.4 Absolute Volume Based Dynamic Capacity (AVBDC).............................................................................38 6.8.5 Free Capacity Assignment (FCA)...............................................................................................................38 7 Synchronization procedures...................................................................................................................38 7.1 Overall events sequencing................................................................................................................................38 7.2 Initial synchronization procedure.....................................................................................................................40 7.3 Logon procedure..............................................................................................................................................41 7.4 Coarse synchronization procedure (optional)...................................................................................................42 7.5 Fine synchronization procedure (optional).......................................................................................................43 7.6 Synchronization maintenance procedure..........................................................................................................44 7.7 Logoff procedure..............................................................................................................................................44 7.7.1 General........................................................................................................................................................44 7.7.2 Normal........................................................................................................................................................44 7.7.3 Abnormal....................................................................................................................................................44 8 Control and management........................................................................................................................45 8.1 Protocol stack...................................................................................................................................................45 8.1.1 RCST Type A (IP)......................................................................................................................................45 8.1.2 Optional RCST Type B (Native ATM).......................................................................................................48 8.2 RCST addressing..............................................................................................................................................48 8.3 Forward link signalling....................................................................................................................................48 8.3.1 General SI tables.........................................................................................................................................48 8.3.1.1 Superframe Composition Table (SCT)..................................................................................................49 8.3.1.2 Frame Composition Table (FCT)..........................................................................................................49 8.3.1.3 Time-Slot Composition Table (TCT)....................................................................................................49 8.3.1.4 Satellite Position Table (SPT)...............................................................................................................49 8.3.1.5 Correction Message Table (CMT)........................................................................................................49 8.3.1.6 Terminal Burst Time Plan (TBTP)........................................................................................................49 8.3.2 Terminal Information Message (TIM)........................................................................................................49 8.3.3 PCR Insertion TS Packet............................................................................................................................49 8.3.4 Summary.....................................................................................................................................................50 8.3.5 Repetition rates...........................................................................................................................................50 8.4 Return link signalling.......................................................................................................................................50 8.4.1 RCST synchronization and Identification messages...................................................................................50 8.4.2 Configuration parameters between RCST and NCC (optional)..................................................................51 8.4.3 Other messages for network management (optional)..................................................................................51 8.4.4 Burst time plan exchange............................................................................................................................52 8.5 Coding of SI for forward link signalling..........................................................................................................52 8.5.1 Introduction.................................................................................................................................................52 8.5.2 SI table mechanism.....................................................................................................................................52 8.5.3 DSM-CC section mechanism......................................................................................................................53 8.5.4 Coding of PID and table_id fields..............................................................................................................53 8.5.5 Table definitions.........................................................................................................................................53 8.5.5.1 Standard section headers.......................................................................................................................53 8.5.5.1.1 SI section header..............................................................................................................................54 8.5.5.1.2 DSM-CC private section header......................................................................................................55 8.5.5.2 Superframe Composition Table (SCT)..................................................................................................56 SIST EN 301 790 V1.3.1:2003

8.5.5.3 Frame Composition Table (FCT)..........................................................................................................58 8.5.5.4 Timeslot Composition Table (TCT)......................................................................................................60 8.5.5.5 Satellite Position Table (SPT)...............................................................................................................63 8.5.5.6 PCR Insertion Transport Stream packet................................................................................................63 8.5.5.6.1 TS packet format.............................................................................................................................64 8.5.5.6.2 Adaptation field...............................................................................................................................64 8.5.5.6.3 Optional payload field.....................................................................................................................65 8.5.5.7 Terminal Burst Time Plan (TBTP)........................................................................................................66 8.5.5.8 Terminal Information Message (TIM)..................................................................................................67 8.5.5.9 Correction Message Table (CMT)........................................................................................................69 8.5.5.10 descriptor coding...................................................................................................................................71 8.5.5.10.1 descriptor identification and location..............................................................................................71 8.5.5.10.2 Network Layer Info descriptor (optional)........................................................................................71 8.5.5.10.3 Correction Message descriptor........................................................................................................72 8.5.5.10.4 Logon Initialize descriptor...............................................................................................................74 8.5.5.10.5 ACQ Assign descriptor....................................................................................................................75 8.5.5.10.6 SYNC Assign descriptor.................................................................................................................76 8.5.5.10.7 Encrypted Logon ID descriptor.......................................................................................................77 8.5.5.10.8 Echo Value descriptor.....................................................................................................................78 8.5.5.10.9 Linkage descriptor (private data).....................................................................................................78 8.5.5.10.10 RCS content descriptor....................................................................................................................80 8.5.5.10.11 Satellite forward link descriptor......................................................................................................81 8.5.5.10.12 Satellite return link descriptor.........................................................................................................83 8.5.5.10.13 Table Update descriptor...................................................................................................................84 8.5.5.10.14 Contention control descriptor..........................................................................................................85 8.5.5.10.15 Correction COntrol descriptor.........................................................................................................85 8.5.5.10.16 Forward Interaction Path descriptor................................................................................................86 8.5.5.10.17 Return Interaction Path descriptor...................................................................................................87 8.5.5.10.18 Connection Control descriptor (optional)........................................................................................89 8.5.5.11 Accessing of the forward link signalling...............................................................................................89 8.5.5.12 RCS Map Table.....................................................................................................................................93 9 Security, identity, encryption.................................................................................................................94 9.1 Authentication..................................................................................................................................................95 9.2 Forward link.....................................................................................................................................................95 9.3 Return link........................................................................................................................................................95 9.4 Security (optional)............................................................................................................................................95 9.4.1 Cryptographic primitives............................................................................................................................96 9.4.1.1 Public key exchange..............................................................................................................................96 9.4.1.2 Hashing.................................................................................................................................................97 9.4.1.3 Encryption.............................................................................................................................................97 9.4.1.4 Pseudo-random numbers.......................................................................................................................97 9.4.2 Main Key Exchange (MKE).......................................................................................................................98 9.4.3 Quick Key Exchange (QKE)......................................................................................................................99 9.4.4 Explicit Key Exchange (EKE)....................................................................................................................99 9.4.5 Key derivation............................................................................................................................................99 9.4.6 Data stream processing.............................................................................................................................100 9.4.6.1 Payload streams...................................................................................................................................100 9.4.6.2 Data encryption...................................................................................................................................100 9.4.6.3 Encryption flags..................................................................................................................................100 9.4.6.4 Chaining and initialization vector.......................................................................................................101 9.4.7 Security establishment..............................................................................................................................101 9.4.8 Persistent state variables...........................................................................................................................102 9.4.8.1 Guaranteed delivery............................................................................................................................102 9.4.9 Security MAC messages...........................................................................................................................102 9.4.9.1 Security Sign-On...................................................................................................................102 9.4.9.2 Security Sign-On Response...................................................................................................103 9.4.9.3 Main Key Exchange..............................................................................................................104 9.4.9.4 Main Key Exchange Response..............................................................................................104 9.4.9.5 Quick Key Exchange.............................................................................................................105 9.4.9.6 Quick Key Exchange Response.............................................................................................105 9.4.9.7 Explicit Key Exchange..........................................................................................................106 SIST EN 301 790 V1.3.1:2003

9.4.9.8 Explicit Key Exchange Response..........................................................................................106 9.4.9.9 Wait.......................................................................................................................................107 Annex A (informative): Compliance table..........................................................................................108 Annex B (informative): Bibli