1、 ETSI EN 30Digital VidSecoInteractive SaPart 2: Lower European Standard 301 545-2 V1.2.1 (201ideo Broadcasting (DVB); cond Generation DVB Satellite System (DVB-RCS2);er Layers for Satellite standard2014-04) ard ETSI ETSI EN 301 545-2 V1.2.1 (2014-04) 2Reference REN/JTC-DVB-324-2 Keywords DVB, intera
2、ction, 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 but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice The present document can be do
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6、pyright Notification No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as authorized by written permission of ETSI. The content of the PDF version shall not be modified without the written authorization of ETSI. T
7、he copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2014. European Broadcasting Union 2014. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members.
8、 3GPPTM and LTE are Trade Marks of ETSI 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 ETSI EN 301 545-2 V1.2.1 (2014-04) 3Contents Intellectual Property Rights 10g3Foreword . 1
9、0g3Introduction 11g31 Scope 13g32 References 13g32.1 Normative references . 13g32.2 Informative references 14g33 Definitions, symbols and abbreviations . 15g33.1 Definitions 15g33.2 Symbols 18g33.3 Abbreviations . 18g34 Two-way Satellite Interactive Satellite System models . 21g34.1 Interactive Sate
10、llite System Reference Models 21g34.2 System Model . 21g34.3 Dynamic Connectivity 21g34.4 Reference Architectures . 21g34.5 Protocol Stack Model . 21g34.6 The Lower Layers 22g34.6.1 Lower Layer Services . 23g34.6.2 Lower Layer Interfaces . 24g35 Forward Link and Regenerative Mesh Downlink 26g35.1 SD
11、U Transport in the Forward Link. 26g35.1.1 SDU Transport in GSE PDUs . 27g35.1.1.1 Implicit Integrity Protection of SDU (optional) 27g35.1.1.2 Explicit Integrity Protection of SDU . 27g35.1.1.3 Maximum Transfer Unit for an SDU in the Forward Link . 27g35.1.2 SDU Transport in TS Packets (optional) 27
12、g35.2 Addressing in the forward link . 28g35.2.1 Addressing of L2S 28g35.2.2 Addressing the Unicast Higher Layer Traffic . 28g35.2.2.1 Addressing Unicast Sent with GSE . 28g35.2.2.2 Addressing Unicast Sent over a TS Packet stream (optional) . 28g35.2.3 Addressing the Multicast Higher Layer Traffic 2
13、8g35.2.3.1 Addressing Multicast over GSE 29g35.2.3.2 Addressing Multicast over TS Packet stream 29g35.3 Layer 2 FEC (optional) . 29g35.3.1 LL-FEC Frame 30g35.3.1.1 Filling of Application Data Table . 30g35.3.1.2 Generation of the FEC Data Table 31g35.3.1.2.1 Reed-Solomon Code 31g35.3.1.2.2 Raptor Co
14、de . 32g35.3.2 Carriage of LL-FEC Frames . 32g35.3.2.1 Carriage of Application Data 33g35.3.2.1.1 GSE-FEC application data optional header extension . 33g35.3.2.1.2 NLOS Adaptation optional header extension 34g35.3.2.2 Carriage of Parity Data 34g35.3.2.3 Real-Time Parameters. 36g35.4 DVB-S2 Physical
15、 Layer . 37g35.4.1 CCM operation . 37g35.4.2 ACM operation . 37g35.4.2.1 ACM TDM carrying TS packets (optional) 37g35.4.2.2 Single stream ACM TDM carrying GSE PDU . 37g35.4.2.3 Multi-stream ACM TDM carrying GSE PDU (optional) 38g3ETSI ETSI EN 301 545-2 V1.2.1 (2014-04) 45.4.2.4 Transmission mode usa
16、ge . 38g35.4.2.5 PL frame usage 38g35.4.2.6 SYNC Byte Usage 38g35.4.3 FL Modulation and Coding . 39g35.4.4 Symbol Scrambling. 39g35.4.4.1 Broadcast Type Symbol Scrambling . 39g35.4.4.2 Custom Type Symbol Scrambling (optional) 39g35.4.5 Direct Sequence Spread Spectrum (optional) . 39g36 Forward Link
17、L2S 39g36.1 Protocol Stack 40g36.2 Forward Link L2S Components . 40g36.2.1 Network Clock Reference Indication 40g36.2.1.1 NCR in Continuous GS . 40g36.2.1.2 NCR in TS Packet Stream (optional) 41g36.2.2 Broadcast Tables . 41g36.2.2.1 Network Information Table (NIT) 41g36.2.2.2 RCS Map Table (RMT) 41g
18、36.2.2.3 Superframe Composition Table (SCT) 42g36.2.2.4 Frame Composition Table version 2 (FCT2) 42g36.2.2.5 Broadcast Configuration Table (BCT) 42g36.2.2.6 Satellite Position Table (SPT) . 42g36.2.2.7 Correction Message Table (CMT) 42g36.2.2.8 Terminal Burst Time Plan Table version 2 (TBTP2) 42g36.
19、2.2.9 Multicast Mapping Table version 2 (MMT2) . 43g36.2.2.10 Transmission Mode Support Table version 2 (TMST2) . 43g36.2.2.11 Fast Access Table (FAT) 43g36.2.2.12 Supplementary Tables (optional) 43g36.2.3 Terminal Information Message (TIM) 43g36.3 Refresh and Update Intervals . 43g36.4 Syntax and C
20、oding of FL Signals for L2S . 44g36.4.1 Table and Message Identification and Placement . 44g36.4.2 The NCR Packet . 46g36.4.3 Transport of Configuration Tables and Messages 46g36.4.3.1 Transport in Continuous Generic Stream 46g36.4.3.1.1 Un-addressed Lower Layer Signalling Transport in GSE Packets 4
21、6g36.4.3.1.2 Addressed Lower Layer Signalling Transport in GSE Packets . 47g36.4.3.2 Transport in TS Packets (optional) 47g36.4.3.2.1 Un-addressed Transport in TS Packets (optional) . 47g36.4.3.2.2 Addressed Lower Layer Signal Transport in TS Packet Stream (optional) . 48g36.4.4 The SCT Content 50g3
22、6.4.5 The FCT2 Content 51g36.4.6 The BCT Content 53g36.4.6.1 Format Data Block for LM Burst 54g36.4.6.2 Format Data Block for CPM Burst . 56g36.4.6.3 Format Data Block for Continuous Transmission . 59g36.4.6.4 Format Data Block for Spread-Spectrum LM Burst . 61g36.4.7 The SPT Content . 63g36.4.8 The
23、 CMT Content . 64g36.4.9 The TBTP2 Content 64g36.4.10 The NIT Content . 67g36.4.11 The RMT Content . 68g36.4.12 The MMT2 Content 69g36.4.13 The TMST2 Content . 70g36.4.14 The TIM Content 71g36.4.15 The Fast Access Table Content (optional) 73g36.4.16 Supplementary SI Tables Content (optional) 73g36.4
24、.17 The Descriptors . 73g36.4.17.1 Correction Message Descriptor . 73g36.4.17.2 Control Assign Descriptor . 74g36.4.17.3 Echo Value Descriptor 75g36.4.17.4 Linkage Descriptor 76g3ETSI ETSI EN 301 545-2 V1.2.1 (2014-04) 56.4.17.5 Satellite Return Link Descriptor . 77g36.4.17.6 Satellite Forward Link
25、Descriptor . 78g36.4.17.7 Logon Contention Descriptor 80g36.4.17.8 Correction Control Descriptor . 81g36.4.17.9 Mobility Control Descriptor 81g36.4.17.10 Correction Message Extension Descriptor 82g36.4.17.11 Void. 82g36.4.17.12 Implementation Type Descriptor (optional) 83g36.4.17.13 LL FEC Identifie
26、r Descriptor (optional) . 84g36.4.17.14 Frame Payload Format Descriptor 86g36.4.17.15 Pointing Alignment Support Descriptor 88g36.4.17.16 Forward Link Streams Descriptor (optional) 90g36.4.17.17 Lower Layer Service Descriptor . 90g36.4.17.18 Logon Response Descriptor 93g36.4.17.19 DHCP Option Descri
27、ptor 94g36.4.17.20 TRANSEC Message Descriptor 95g36.4.17.21 Transmission Offset Descriptor 96g36.4.17.22 RCS Content Descriptor (optional) . 97g36.4.17.23 Logon Security Descriptor (optional) . 97g36.4.17.24 Random Access Load Control Descriptor . 98g36.4.17.25 CLI Instruction Descriptor (optional)
28、. 99g36.4.17.26 Random Access Traffic Method Descriptor (optional) . 99g36.4.17.27 Network Layer Info descriptor 101g36.4.17.28 Higher Layers Initialization descriptor 101g36.4.17.29 Lowest Software Version descriptor . 102g36.4.17.30 Mesh System descriptor (optional) . 103g36.4.17.31 Extension Prot
29、ocol descriptor (optional) . 103g36.4.17.32 Continuous Carrier Control Descriptor (optional) 104g36.5 Transmission of Forward Link L2S Data Structures 106g37 Return Link and Mesh Uplink 106g37.1 Return Link Logical Link Control 108g37.1.1 SDU Transport in the Return Link 108g37.1.2 Maximum Transfer
30、Unit for an SDU in the Return Link 108g37.2 Return Link Medium Access Control . 108g37.2.1 The Addressed Link PDU (ALPDU) 108g37.2.1.1 Addressed Link PDU Format and Syntax . 109g37.2.1.1.1 compressed_protocol_type Field . 109g37.2.1.1.2 protocol_type Field . 111g37.2.1.1.3 alpdu_label_byte Field (op
31、tional) 111g37.2.1.1.4 sdu_byte Field . 111g37.2.1.1.5 fragmenting_aldpdu 111g37.2.1.1.6 sequence_number Field 111g37.2.1.1.7 alpdu_crc Field (optional) 111g37.2.1.2 The ALPDU Label 112g37.2.1.3 Identifying the Transmission Resources for the ALPDU 112g37.2.1.4 Mapping the ALPDU to Available Payload
32、112g37.2.1.4.1 Forwarding the ALPDU in One Payload-adapted PDU 112g37.2.1.4.2 Forwarding the ALPDU Using Several Payload-adapted PDUs . 112g37.2.1.4.3 Integrity Protection of a Fragmented ALPDU . 112g37.2.1.4.4 Multiplexing Payload-adapted PDUs used for Different ALPDUs . 113g37.2.2 The Payload-adap
33、ted PDU (PPDU) 113g37.2.2.1 start_indicator and end_indicator Fields . 114g37.2.2.2 ppdu_length Field . 115g37.2.2.3 fragment_id Field . 115g37.2.2.4 alpdu_label_type Field 115g37.2.2.5 protocol_type_suppressed Field 115g37.2.2.6 ppdu_label_byte Field (optional) . 116g37.2.2.7 use_alpdu_crc Field 11
34、6g37.2.2.8 total_length Field . 116g37.2.2.9 alpdu_byte Field 116g3ETSI ETSI EN 301 545-2 V1.2.1 (2014-04) 67.2.2.10 The PPDU Label (optional). 116g37.2.3 The Frame PDU 116g37.2.3.1 Context Differentiation of the Frame PDU . 116g37.2.3.2 The Frame PDU Format and Syntax . 117g37.2.3.3 The Payload Lab
35、el. 119g37.2.4 Lower Layer Addressing by the RCST . 119g37.2.4.1 Addresses used for Lower Layer Signalling towards NCC . 119g37.2.4.2 Lower Layer Addressing of SDUs 119g37.2.4.2.1 Transparent Star. 119g37.2.4.2.1.1 Explicit ALPDU Source Interface Indication 119g37.2.4.2.1.2 Implicit ALPDU Source/Des
36、tination Addresses 120g37.2.4.2.1.3 Implicit PPDU Source/Destination Addresses . 120g37.2.4.2.1.4 Implicit Frame PDU Source/Destination Addresses 120g37.2.4.2.1.5 Explicit ALPDU Source/Destination Address . 120g37.2.4.2.1.6 Explicit PPDU Source/Destination Addresses (option) . 120g37.2.4.2.1.7 Expli
37、cit Frame PDU Destination Address (option) 120g37.2.4.2.1.8 Explicit Frame PDU Source Address . 120g37.2.4.2.2 Transparent Mesh 120g37.2.4.2.2.1 Explicit ALPDU Destination Address . 120g37.2.4.2.2.2 Explicit FPDU Source Indication 120g37.2.4.2.3 Regenerative Mesh 120g37.2.4.2.3.1 Explicit ALPDU Dest
38、ination Address . 121g37.2.4.2.3.2 Explicit FPDU Destination Indication . 121g37.2.4.3 Virtual Network Addressing . 121g37.2.5 Random Access 121g37.2.5.1 Channels for Random Access . 121g37.2.5.1.1 Timeslots for Random Access Logon 121g37.2.5.1.2 Timeslots for Random Access Control (optional) . 121g
39、37.2.5.1.3 Timeslots for Random Access User Traffic (optional) 121g37.2.5.2 Random Access Methods 121g37.2.5.2.1 Slotted Aloha. 122g37.2.5.2.2 CRDSA (optional) . 122g37.2.5.2.2.1 Constant Replication Ratio CRDSA (optional) . 122g37.2.5.2.2.2 Variable Replication Ratio CRDSA (informational) . 126g37.
40、2.5.3 Resources for contention . 126g37.2.6 Dedicated access . 126g37.2.6.1 Channels for Dedicated access 126g37.2.6.1.1 Timeslots Dedicated to an RCST and for Logon Burst . 126g37.2.6.1.2 Timeslots Dedicated to an RCST and for Control Burst . 126g37.2.6.1.3 Timeslots Dedicated to an RCST and for Tr
41、affic/Control Content . 126g37.2.6.1.4 Timeslots Dedicated to an RCST and for Traffic Content 127g37.2.6.1.5 Carrier Dedicated to an RCST and for Traffic/Control Content 127g37.2.6.2 Unsolicited Resources for Dedicated access . 127g37.2.6.3 Solicitation for Resources for Dedicated access . 127g37.2.
42、6.3.1 Volume Based Dynamic Capacity . 127g37.2.6.3.1.1 Absolute Volume Based Dynamic Capacity (AVBDC) 128g37.2.6.3.1.2 Incremental Volume Based Dynamic Capacity (VBDC). 128g37.2.6.3.2 Rate Based Dynamic Capacity (RBDC) 128g37.2.6.3.3 Requests per request class . 128g37.2.6.3.4 Limitation of the Requ
43、ested Level of Resources . 129g37.2.6.3.5 Carrier for Continuous Transmission (Option) 129g37.2.7 Burst Time Plan Distribution 129g37.2.8 Assignment of a Carrier for Continuous Transmission (Option) 130g37.3 Transmission Bursts . 130g37.3.1 Transmission Burst Content Type 130g37.3.2 Burst Waveform 1
44、30g37.3.3 Energy Dispersal. 130g37.3.4 Payload CRC 131g37.3.5 Coding and Interleaving 132g37.3.5.1 The Turbo FEC Encoder for Linear Modulation . 132g37.3.5.1.1 Turbo Code Permutation . 133g37.3.5.1.2 Circulation of Initial State . 133g3ETSI ETSI EN 301 545-2 V1.2.1 (2014-04) 77.3.5.1.3 Rates and Pun
45、cturing Map . 134g37.3.5.2 Convolutional Encoder for CPM . 134g37.3.5.2.1 The FEC Encoder for CPM . 135g37.3.5.2.2 Trellis Termination 136g37.3.5.2.3 The Bit-interleaver for CPM 136g37.3.6 Inclusion of Known Symbols 138g37.3.6.1 Burst Construction for TC-LM and SS-TC-LM 138g37.3.6.2 Burst Constructi
46、on for CC-CPM . 139g37.3.7 Modulation 140g37.3.7.1 Linear Modulation of Burst . 140g37.3.7.1.1 Baseband Shape and Group Delay 140g37.3.7.1.2 Preamble and Post-amble Symbols . 140g37.3.7.1.3 Pilot Block Symbols 140g37.3.7.1.4 Payload Symbols . 140g37.3.7.1.4.1 Pi/2-BPSK 141g37.3.7.1.4.2 QPSK . 141g37
47、.3.7.1.4.3 8PSK 142g37.3.7.1.4.4 16QAM 143g37.3.7.1.5 Direct-Sequence Spreading . 144g37.3.7.2 Continuous Phase Modulation of Burst. 145g37.3.7.2.1 Continuous Phase Modulation Signal and Pulse Shaping . 145g37.3.7.2.2 Continuous Phase Modulation Bit to Symbol Mapping 146g37.3.7.2.3 Phase Trellis Ter
48、mination 146g37.3.8 Burst Transmission Power Envelope 147g37.3.9 Transmission Burst Timing 149g37.3.9.1 Burst Transmission Start Accuracy . 149g37.3.9.2 Symbol Clock Accuracy . 150g37.3.9.3 Carrier Frequency Accuracy . 150g37.4 Void 150g37.5 The Return Link Structure (MF-TDMA) . 150g37.5.1 Segmentat
49、ion of the Return Link Resources . 150g37.5.1.1 Superframe 150g37.5.1.2 Superframe Sequence 151g37.5.1.3 Frame 151g37.5.1.4 Timeslot 153g37.5.2 Guard time 153g37.5.3 The Dynamic MF-TDMA Transmission Channel 153g37.5.4 The Frequency Range of the Dynamic Transmission Channel . 155g37.6 Return Link Continuous Carrier (Option) 155g38 Return Link L2S . 157g38.1 Transport of the Logon PDU 157g38.2 Transport of the Control PDU 157g38.2.1 Transport of Control PDU in Control Burst 157g38.2.2 Transport of Control PDU multiplexed with higher layer PDUs 158g38.3 Syntax and Coding of RL S
