DVB-RCS标准，专业的卫星通信VSAT系统标准_dvbrcs

卫星通信

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ETSI EN 301 790 V1.2.2 (2000-12)

European Standard (Telecommunications series)

Digital Video Broadcasting (DVB);

Interaction channel for satellite distribution systems;

European Broadcasting Union Union Européenne de Radio-Télévision

EBU·UER

ETSI

TSI EN 301 790 V1.2.2 (2000-12)

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.............................................................................................................................................. 9

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 .......................14

6.1 RCST synchronization............................................................................................................................... 15

6.1.1 Timing Control.................................................................................................................................... 15

6.1.2 Carrier synchronization........................................................................................................................ 15

6.1.3 Burst synchronization........................................................................................................................... 15

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.............................................................................................................................. 16

6.2.1.2 Optional MPEG2-TS TRF burst...................................................................................................... 16

6.2.2 Synchronization and acquisition burst formats...................................................................................... 17

6.2.2.1 Synchronization (SYNC) burst format............................................................................................. 17

6.2.2.2 Acquisition (ACQ) burst................................................................................................................. 17

6.2.3 Common Signalling Channel (CSC) burst format.................................................................................. 18

6.2.4 Bit Numbering and Interpretation......................................................................................................... 19

6.2.5 Transmission Order.............................................................................................................................. 19

6.3 Randomization for energy dispersal........................................................................................................... 19

6.4 Coding...................................................................................................................................................... 20

6.4.1 CRC error detection code..................................................................................................................... 20

6.4.2 Reed Solomon outer coding.................................................................................................................. 20

6.4.3 Convolutional inner coding.................................................................................................................. 20

6.4.4 Turbo code........................................................................................................................................... 21

6.4.4.1 Description of the turbo code permutation....................................................................................... 22

6.4.4.2 Determination of the circulation states ............................................................................................ 23

6.4.4.3 Rates and puncturing map............................................................................................................... 23

6.4.4.4 Order of transmission and mapping to QPSK constellation.............................................................. 24

6.5 Modulation................................................................................................................................................ 25

6.5.1 Bit mapping to QPSK constellation ...................................................................................................... 25

6.5.2 Baseband shaping and quadrature modulation....................................................................................... 25

6.5.3 Output power control ........................................................................................................................... 26

6.5.4 Guard Time.......................................................................................................................................... 26

6.6 MAC messages ......................................................................................................................................... 26

6.6.1 Prefix Method...................................................................................................................................... 26

6.6.1.1 Prefix method mechanism............................................................................................................... 26

6.6.1.2 Satellite Access Control (SAC) field ............................................................................................... 26

6.6.2 Data unit labelling method (DULM)..................................................................................................... 27

6.6.2.1 DULM with ATM-formatting......................................................................................................... 27

6.6.2.2 DULM with MPEG-formatting....................................................................................................... 29

6.6.3 Mini-slot Method................................................................................................................................. 30

6.6.4 Contention based Mini-slot Method...................................................................................................... 30

ETSI

TSI EN 301 790 V1.2.2 (2000-12)

6.7 Multiple Access......................................................................................................................................... 30

6.7.1 MF-TDMA.......................................................................................................................................... 30

6.7.1.1 Fixed MF-TDMA........................................................................................................................... 30

6.7.1.2 Dynamic MF-TDMA (Optional)..................................................................................................... 31

6.7.1.3 Frequency range............................................................................................................................. 31

6.7.2 Segmentation of the return link capacity............................................................................................... 32

6.7.2.1 Superframes ................................................................................................................................... 32

6.7.2.2 Frames ........................................................................................................................................... 33

6.7.2.3 Timeslots........................................................................................................................................ 33

6.8 Capacity request categories........................................................................................................................ 34

6.8.1 Continuous Rate Assignment (CRA) .................................................................................................... 34

6.8.2 Rate Based Dynamic Capacity (RBDC)................................................................................................ 34

6.8.3 Volume Based Dynamic Capacity (VBDC) .......................................................................................... 34

6.8.4 Absolute Volume Based Dynamic Capacity (AVBDC)......................................................................... 34

6.8.5 Free Capacity Assignment (FCA)......................................................................................................... 34

7 Synchronization procedures ..............................................................................................................35

7.1 Overall Events Sequencing........................................................................................................................ 35

7.2 Initial synchronization procedure............................................................................................................... 37

7.3 Logon procedure....................................................................................................................................... 38

7.4 Coarse synchronization procedure (Optional)............................................................................................. 38

7.5 Fine Synchronization Procedure (Optional)................................................................................................ 39

7.6 Synchronization Maintenance procedure.................................................................................................... 40

7.7 Logoff Procedure ...................................................................................................................................... 41

7.7.1 General................................................................................................................................................ 41

7.7.2 Normal ................................................................................................................................................ 41

7.7.3 Abnormal............................................................................................................................................. 41

8 Control and management ..................................................................................................................41

8.1 Protocol stack............................................................................................................................................ 41

8.1.1 RCST Type A (IP) ............................................................................................................................... 41

8.1.2 Optional RCST Type B (Native ATM)................................................................................................. 43

8.2 RCST Addressing...................................................................................................................................... 44

8.3 Forward Link Signalling............................................................................................................................ 44

8.3.1 General SI Tables................................................................................................................................. 44

8.3.1.1 Superframe Composition Table (SCT) ............................................................................................ 44

8.3.1.2 Frame Composition Table (FCT) .................................................................................................... 44

8.3.1.3 Time-Slot Composition Table (TCT) .............................................................................................. 45

8.3.1.4 Satellite Position Table (SPT)......................................................................................................... 45

8.3.1.5 Correction Message Table (CMT)................................................................................................... 45

8.3.1.6 Terminal Burst Time Plan (TBTP).................................................................................................. 45

8.3.2 Terminal Information Message (TIM) .................................................................................................. 45

8.3.3 PCR Insertion TS Packet...................................................................................................................... 45

8.3.4 Summary............................................................................................................................................. 45

8.3.5 Repetition Rates................................................................................................................................... 46

8.4 Return Link Signalling .............................................................................................................................. 46

8.4.1 RCST synchronization and Identification messages .............................................................................. 46

8.4.2 Configuration parameters between RCST and NCC (optional).............................................................. 47

8.4.3 Other Messages for Network Management (optional) ........................................................................... 47

8.4.4 Burst Time Plan Exchange................................................................................................................... 48

8.5 Coding of SI for Forward Link Signalling.................................................................................................. 48

8.5.1 Introduction ......................................................................................................................................... 48

8.5.2 SI Table Mechanism ............................................................................................................................ 48

8.5.3 DSM-CC Section Mechanism .............................................................................................................. 48

8.5.4 Coding of PID and table_id fields......................................................................................................... 49

8.5.5 Table definitions.................................................................................................................................. 49

8.5.5.1 Standard Section Headers ............................................................................................................... 49

8.5.5.1.1 SI Section Header...................................................................................................................... 50

8.5.5.1.2 DSM-CC Private Section Header............................................................................................... 51

8.5.5.2 Superframe Composition Table (SCT) ............................................................................................ 52

8.5.5.3 Frame Composition Table (FCT) .................................................................................................... 54

8.5.5.4 Timeslot Composition Table (TCT) ................................................................................................ 55

ETSI

TSI EN 301 790 V1.2.2 (2000-12)

8.5.5.5 Satellite Position Table (SPT)......................................................................................................... 58

8.5.5.6 PCR Insertion Transport Stream packet........................................................................................... 58

8.5.5.6.1 TS packet format....................................................................................................................... 58

8.5.5.6.2 Adaptation field ........................................................................................................................ 59

8.5.5.6.3 Optional Payload field............................................................................................................... 59

8.5.5.7 Terminal Burst Time Plan (TBTP).................................................................................................. 60

8.5.5.8 Terminal Information Message (TIM)............................................................................................. 62

8.5.5.9 Correction Message Table (CMT)................................................................................................... 64

8.5.5.10 Descriptor coding ........................................................................................................................... 66

8.5.5.10.1 Descriptor Identification and location ........................................................................................ 66

8.5.5.10.2 Network Layer Info Descriptor (optional)..................................................................................66

8.5.5.10.3 Correction Message descriptor................................................................................................... 67

8.5.5.10.4 Logon Initialize Descriptor........................................................................................................ 68

8.5.5.10.5 ACQ Assign Descriptor............................................................................................................. 70

8.5.5.10.6 SYNC Assign Descriptor........................................................................................................... 71

8.5.5.10.7 Encrypted Logon ID Descriptor................................................................................................. 72

8.5.5.10.8 Echo Value Descriptor .............................................................................................................. 72

8.5.5.10.9 Linkage descriptor (private data) ............................................................................................... 73

8.5.5.10.10 RCS content descriptor.............................................................................................................. 74

8.5.5.10.11 Satellite forward link descriptor................................................................................................. 75

8.5.5.10.12 Satellite return link descriptor.................................................................................................... 77

8.5.5.10.13 Table Update Descriptor............................................................................................................ 78

8.5.5.10.14 Contention control descriptor..................................................................................................... 79

8.5.5.10.15 Correction Control descriptor .................................................................................................... 79

8.5.5.11 Accessing of the forward link signalling.......................................................................................... 80

9 Security, Identity, Encryption ...........................................................................................................84

9.1 Authentication........................................................................................................................................... 84

9.2 Forward Link ............................................................................................................................................ 84

9.3 Return Link............................................................................................................................................... 85

9.4 Security (optional)..................................................................................................................................... 85

9.4.1 Cryptographic primitives...................................................................................................................... 85

9.4.1.1 Public key exchange....................................................................................................................... 86

9.4.1.2 Hashing.......................................................................................................................................... 86

9.4.1.3 Encryption...................................................................................................................................... 86

9.4.1.4 Pseudo-random numbers................................................................................................................. 87

9.4.2 Main Key Exchange, MKE .................................................................................................................. 87

9.4.3 Quick Key Exchange, QKE.................................................................................................................. 88

9.4.4 Explicit Key Exchange, EKE................................................................................................................ 88

9.4.5 Key derivation..................................................................................................................................... 88

9.4.6 Data stream processing......................................................................................................................... 88

9.4.6.1 Payload streams.............................................................................................................................. 89

9.4.6.2 Data encryption .............................................................................................................................. 89

9.4.6.3 Encryption flags ............................................................................................................................. 89

9.4.6.4 Chaining and initialization vector.................................................................................................... 90

9.4.7 Security Establishment......................................................................................................................... 90

9.4.8 Persistent state variables....................................................................................................................... 91

9.4.8.1 Guaranteed delivery........................................................................................................................ 91

9.4.9 Security MAC Messages...................................................................................................................... 91

9.4.9.1 <MAC>Security Sign-On ............................................................................................................... 91

9.4.9.2 <MAC>Security Sign-On Response................................................................................................ 92

9.4.9.3 <MAC>Main Key Exchange........................................................................................................... 93

9.4.9.4 <MAC>Main Key Exchange Response........................................................................................... 93

9.4.9.5 <MAC>Quick Key Exchange......................................................................................................... 94

9.4.9.6 <MAC>Quick Key Exchange Response.......................................................................................... 94

9.4.9.7 <MAC>Explicit Key Exchange....................................................................................................... 95

9.4.9.8 <MAC>Explicit Key Exchange Response....................................................................................... 95

9.4.9.9 <MAC>Wait .................................................................................................................................. 96

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