1、ETSI EN 301 958 1.1.1 (2002-03) European Sfandard (Telecommunicafions series) Digital Video Broadcasting (DVB); Interaction channel for Digital Terrestrial Television (RCT) incorporating Multiple Access OFDM 2 ETSI EN 301 958 VI .I .I (2002-03) Reference DEN/JTC-DVB-117 Keywords broadcasting, digita
2、l, DVB, interaction, terrestrial, TV, video ETSI 650 Route des Lucioles F-O6921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 O0 Fax: +33 4 93 65 47 16 Siret No 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-prfecture de Grasse (06) No 7803/88 Important notice I
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6、ll media. O European Telecommunications Standards Institute 2002. O European Broadcasting Union 2002. All rights reserved. ETSI 3 ETSI EN 301 958 VI .I .I (2002-03) Contents Intellectual Property Rights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Foreword 1 Scope . 2 References . . . .8 3 3.1 3.2 3.3 4 4.1 4.2 5 5.1 5.2 5.3 5.4 Definitions, symbols and abbreviations . . . . .9 9 10 10 System
8、architecture for wireless DVB-T interaction channels . . . .12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Protocol stack model . 12 System model 12 System Concept . . Lower physical layer principle . Forward Interaction Path (Downs
9、tream IB) Return Interaction Path (Upstream) DVB-RCT interaction channel for terrestrial networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 . 14 . 15 . 16 . 16 . . . . 6 6.1 General princ . 6.2
10、Transmission . 6.3 Transmission . 6.3.1 Transmission fiames organizatio 6.3.2 Transmission fiame organizatio . DVB-RCT upstream physical layer specifications . . . 16 6.3.2.1 Transmission frame 1 (TF1) . . 6.3.2.2 Transmission frame 2 (TF2) . . 6.4 6.4.1 6.4.2 6.4.3 6.5 6.6 6.7 Randomization, channe
11、l e . 6.7.1 Data randomization . 6.7.2 6.7.2.1 Channel encoding using Turbo . 6.7.2.1.1 Turbo code permutation. . 6.7.2.1.3 Rates and puncturing map . . 6.7.2.1.4 Order of output . 6.7.2.2.1 Reed-Solomon encoding . RCTT synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12、. . . . . . . . . . Coarse synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Synibol clock synchronization . . . . . . . . . . . . . . . . . . . . . Carrier synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Signal definition . . . .
13、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . Transmitted signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Channel encoding . . . . . . . . . . . . . . . . . . . . . . . . 28 . 28 . 29 . . . 30 . 30 6.7.2.2 .30 . . . 30 . 31 6.7.2.2.2 . . . 32 . 33 6.7.2.2.
14、3 6.7.3 . 33 6.8 6.8.1 34 6.8.2 35 6.8.3 Ranging pilot modulatio 36 36 6.9 . . 37 . . 37 . . 37 38 Determination of the circulation states . . 6.7.2.1.2 Channel encoding using concatenated codes . . Convolutional coding . . . . . . . . . . Concatenated coding . . . . . . . . . . . Interleaving . . .
15、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Modulation Schemes . . . . . . . . . . . . . . . . . . . . . . . . Constellations . . . . . . . . . . . . . . . Pilot modulation . . . . . . . . . . Shaping filters . . . . 6.9.1 The Nyquist shaping function 6.9.2 The Rectangular s
16、hapi 6.10 Burst Structure and formatting 6.10.1 Burst Structure 1 (BS 1) definition . 6.10.1.1 Burst Structure 1 without 39 ETSI 4 ETSI EN 301 958 VI . 1 . 1 (2002-03) 6.10.1.2 6.10.2 6.10.2.1 6.10.2.2 6.10.3 6.11 6.11.1 6.11.2 6.11.3 6.11.3.1 6.11.3.2 6.12 6.12.1 6.12.2 6.12.3 6.12.4 6.12.5 6.13 6.
17、13.1 6.13.2 6.14 6.14.1 6.14.2 6.14.3 6.14.4 6.14.4.1 6.14.4.2 7 7.1 7.2 7.3 7.3. 7.3. 7.3. 8 8.1 8.1. Burst Structure 1 with frequency hopping 40 Burst Structure 2 (BS2) definition 41 Carrier Allocation for Medium Access Scheme 2 . 43 Carrier allocation for Medium Access Scheme 3 43 Burst Structure
18、 3 (BS3) definition 44 Medium Access Schemes . 45 Medium Access Scheme 1 46 Medium Access Scheme 2 46 Medium Access Scheme 3 46 Sub-channel format for 2K mode structure . 47 Sub-channel format for 1K mode structure . 48 Ranging signal and structures 48 Ranging Sub-channels de 48 49 49 50 Short Rangi
19、ng transmssion 50 Transmission capacities 51 Burst capacity and b 51 54 55 Modulator switc 55 Spectrum mask 56 Time and frequency accuracy . 57 Frequency accuracy . 57 Time accuracy . 57 Modulator performance 55 Forward interaction path specification . 58 Downstream general format . 58 Upstream Sync
20、hronization Field format . 60 RCTT synchronization procedure 60 Overall events sequencing 61 . 1 Initial synchronization pr 61 . 2 Ranging synchronization 61 DVB-RCT MAC layer specifications 62 8.1.1.1 8.1.1.2 8.1.1.3 8.1.1.4 8.1.2 8.2 8.2.1 8.3 8.4 8.4.1 8.4.2 8.4.2.1 8.4.2.2 8.4.3 8.4.3.1 8.4.3.2
21、8.4.3.3 8.4.3.4 8.4.4 8.4.4.1 8.4.4.2 8.4.4.3 8.4.4.4 MAC reference model 62 MAC concept 62 Relationship between higher layers and MAC protocol 62 Relationship between physical layer and MAC protocol 63 Relationship between physical layer slot position counter and MAC slot assignment . 64 Timing rel
22、ationship between upstream and downstream MAC Messages 64 Access modes (ContentiodRanging/Fixed rate/Reservation) . 64 Overview of cell configurations for DVB-RCT . 66 RCTTs Initialization and Sign On procedure . 68 Upstream message format 68 Downstream message format . 69 MAC message format . 69 MA
23、C Initialization and Provisioning 72 Provisioning Channel Message (Broadcast Downstream) 72 Default Configuration Message (Broadcast Downstream) . 73 Sign On and Calibration . 79 Ranging and Power Calibration Message (Broadcast/Singlecast Downstream) . 80 Sign-On Message (Singlecast Upstre 83 Initia
24、lization Complete Message (Si 84 Slot State Message (Broadcast Dow 85 Connection establishment 87 Establishment of the first (i 87 Connect Res 93 93 Connect Message 88 Connect Confirm (Singlecast Downstream) ETSI 5 ETSI EN 301 958 VI .I .I (2002-03) 8.4.4.5 8.4.4.6 8.4.4.7 8.4.5 8.4.5.1 8.4.5.2 8.4.
25、6 8.4.7 8.4.8 8.4.8.1 8.4.8.2 8.4.8.3 8.4.8.3.1 8.4.8.4 8.4.9 8.4.9.1 8.4.9.2 8.4.9.3 8.4.9.4 8.4.9.5 8.4.9.6 8.4.9.7 8.4.9.8 8.4.9.9 8.4.9.10 8.4.9.1 1 8.5 8.5.1 8.5.1.1 8.5.1.2 8.5.1.3 8.5.1.4 8.5.2 8.5.3 8.5.4 8.5.5 8.5.6 8.5.6.1 8.5.6.2 8.5.6.3 8.5.6.4 8.5.7 8.5.8 8.5.8.1 8.5.9 8.5.9.1 8.5.9.2 8
26、.5.9.3 8.5.9.4 8.5.9.5 8.5.9.6 8.5.9.7 8.5.9.8 8.5.9.9 8.6 8.7 8.7.1 8.7.1.1 8.7.1.2 8.7.1.3 8.7.1.4 8.7.1.5 Establishment of additional connections. . Resource Request Message (Upst Resource Request Denied Mess Release Message (Singlecast Do . .94 .94 stream) . 95 Connection release. 95 96 Release
27、Response (Upstream c . 96 Fixed rate access . . 96 Contention based access . . 97 Reservation access . . 97 Reservation ID Assignment M stream) 98 Reservation ID Response Message (Upstream contention or reserved) .99 Reservation Request Message (Upstream contention or reserved) .99 Reservation Grant
28、 Message (Broadcast Downstream) ,100 Reservation Status Request (Upstream contention or reserved). 102 MAC Link Management Power and Timing Man TFDMA Allocation Manageme . 103 Reprovision Message (Singlecast Downstream) . ,103 Channel Error Management . 105 Link Management messages . 105 nglecast or
29、 Broadcast Downstream) . ,108 Link Management Response Message (Upstream contention or reserved) 11 1 Status Request Message (Downstream Singlecast) . Status Response Message (Upstream Contention or reserved). . US-Contention-Optimized-Transmission-Window-Message . Security (optional) . Cryptographi
30、c primitives . . 102 . 102 Idle Message (Ups Transmission Contr or reserved) . 105 Main Key Exchange, MKE Quick Key Exchange, QKE Explicit Key Exchange, EKE . Key derivation . . 118 Data stream processing Payload streams . 119 Data encryption . 119 Encryption flags . . 120 Chaining and initializatio
31、n vector Security Establishment . 120 Persistent state variables Guaranteed delivery . . 121 Security MAC messages Security Sign-On (Single-cast Downstream). . Security Sign-On Response (Upstream) Main Key Exchange . 124 Quick Key Exchange (Single-cast Downstr Quick Key Exchang . 125 Explicit Key Ex
32、change Response (Upstream) Wait (Upstream) . . 127 MAC primitives. . 127 Control and resource primitives On RCTT side . 118 . 119 . 120 . 121 . 122 . 122 . 123 Main Key Exchange . 125 Explicit Key Exch . 126 . . 128 . 128 MAC-ACTIVATI MAC-ACTIVATI MAC-CONNECT-IND. MAC-RSV-ID-IND . 132 MAC-RELEASE-IN
33、D . 132 ETSI 6 ETSI EN 301 958 VI . 1 . 1 (2002-03) 8.7. 8.7. 8.7. . 6 . 7 . 8 8.7.2 8.7.2.1 8.7.2.2 8.8 8.8.1 8.8.2 8.8.3 8.9 8.9.1 8.9.2 8.9.3 8.9.4 MAC-RESOURCE-REQ 132 MAC-RESOURCE-CNF . 134 MAC-RESOURCE-DENIED-IND . 134 On INA side 134 MAC-INA-RESOURCE-REQ . 134 MAC-INA-RESOURCE-IND . 136 Data
34、primitives . 137 DL-DATA-IND 137 DL-DATA-REQ . 138 DL-DATA-CONF 138 Example MAC control scenarios (Informative) . 139 Example MAC control scenario on RCTT s 139 Example resource management scenario on 139 Example resource management scenario on INA side 140 Example upstream data transfer scenarios 1
35、40 . Annex A (informative): Compatibility issues. frequency allocation. frequency range 142 A . 1 Strategies for gaining access to spectrum for DVB-RCT 142 A.2 Preliminary considerations on frequency allocation 142 A.3 Possible Allocation Mechanisms 143 A.4 Compatibility issues . 144 A.4.1 Compatibi
36、lity at the user side . 144 A.4.2 Duplexer . 144 Annex B (informative): Return Channel RF Link budgets and service ranges . 147 Annex C (informative): TV receptiodRCT Txm arrangements 150 Annex D (informative): Structure and specification of the RCTTs RF stage 153 Annex E (informative): MAC Specific
37、ation and Description Language (SDL) . 154 Annex F (informative): Bibliography . 163 History 164 . ETSI 7 ETSI EN 301 958 VI .I .I (2002-03) Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to thes
38、e essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR O00 314: “Intellectual Property Rights (7PRs); Essential, orpotentially Essential, IPRs notlJied to ETSI in respect ofETSI standards“, which is available from the ETSI Secretariat. Latest up
39、dates are available on the ETSI Web server (5). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR O00 3 14 (or the updates on the ETSI Web server) which are, o
40、r may be, or may become, essential to the present document. Foreword This European Standard (Telecommunications series) has been produced by Joint Technical Committee (JTC) of the European Broadcasting Union (EBU), Comit Europen de Normalisation ELECtrotechnique (CENELEC) and the European Telecommun
41、ications Standards Institute (ETSI). NOTE: The EBU/ETSI JTC Broadcast was established in 1990 to Co-ordinate the drafting of standards in the specific field of broadcasting and related fields. Since 1995 the JTC Broadcast became a tripartite body by including in the Memorandum of Understanding also
42、CENELEC, which is responsible for the standardization of radio and television receivers. The EBU is a professional association of broadcasting organizations whose work includes the Co-ordination of its members activities in the technical, legal, programme-making and programme-exchange domains. The E
43、BU has active members in about 60 countries in the European broadcasting area; its headquarters is in Geneva. European Broadcasting Union CH-I218 GRAND SACONNEX (Geneva) Switzerland Tel: +41 22 717 21 11 Fax: +41 22 717 24 81 Founded in September 1993, the DVB Project is a market-led consortium of p
44、ublic and private sector organizations in the television industry. Its aim is to establish the framework for the introduction of MPEG-2 based digital television services. Now comprising over 200 organizations from more than 25 countries around the world, DVB fosters market-led systems, which meet th
45、e real needs, and economic circumstances, of the consumer electronics and the broadcast industry. National transposition dates Date of adoption of this EN: Date of latest announcement of this EN (doa): Date of latest publication of new National Standard or endorsement of this EN (dop/e): Date of wit
46、hdrawal of any conflicting National Standard (dow): 22 February 2002 3 1 May 2002 30 November 2002 30 November 2002 ETSI 8 ETSI EN 301 958 VI .I .I (2002-03) 1 Scope The present document is the baseline specification for the provision of the interaction channel for digital terrestrial television dis
47、tribution system, DVB-T defined in the EN 300 744 standard i. The present document: gives a general description of the baseline system for interactive digital terrestrial TV; specifies the channel coding/modulation; specifies the medium access control protocol; provides guidelines on the radio frequ
48、ency spectrum management. The purpose of the MAC section is to redefie a set of MAC messages based on the DVB-RCCL MAC message set, adapted to suit the specific characteristics of the physical layer of the DVB-RCT specification. The solution provided in the present document for return channels throu
49、gh terrestrial broadcast systems is part of a wider set of alternatives for implementing interactive services for DVB systems. 2 Re fe re nces The following documents contain provisions which, through reference in this text, constitute provisions of the present document. References are either specific (identified by date of publication andor edition number or version number) or non-specific. For a specific ref
