1、 ETSI TS 102 585 V1.1.1 (2007-07)Technical Specification Digital Video Broadcasting (DVB);System Specifications for Satellite servicesto Handheld devices (SH) below 3 GHzEuropean Broadcasting Union Union Europenne de Radio-Tlvision EBUUER ETSI ETSI TS 102 585 V1.1.1 (2007-07) 2 Reference DTS/JTC-DVB
2、-209 Keywords broadcast, DVB 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 Individual copies
3、of the present document can be downloaded from: http:/www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF
4、). In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status o
5、f this and other ETSI documents is available at http:/portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following services: http:/portal.etsi.org/chaircor/ETSI_support.asp Copyright Notification No part may be reproduced except as
6、 authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2007. European Broadcasting Union 2007. All rights reserved. DECTTM, PLUGTESTSTM and UMTSTM are Trade Marks of ETSI registered for the b
7、enefit of its Members. TIPHONTMand the TIPHON logo are Trade Marks currently being registered by ETSI for the benefit of its Members. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. ETSI ETSI TS 102 585 V1.1.1 (2007-07) 3 Contents Int
8、ellectual Property Rights4 Foreword.4 Introduction 4 1 Scope 10 2 References 10 3 Definitions and abbreviations.11 3.1 Definitions11 3.2 Abbreviations .11 4 System definition11 4.1 General .11 4.2 Physical layer .12 4.3 Link layer .12 4.4 Service information 12 4.5 Synchronization12 History 13 ETSI
9、ETSI TS 102 585 V1.1.1 (2007-07) 4 Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI
10、 SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http:/webapp.etsi.org/IPR/home.asp). Pursuant to the ETSI IP
11、R 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 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword Thi
12、s Technical Specification (TS) has been produced by Joint Technical Committee (JTC) Broadcast of the European Broadcasting Union (EBU), Comit Europen de Normalisation ELECtrotechnique (CENELEC) and the European Telecommunications Standards Institute (ETSI). NOTE: The EBU/ETSI JTC Broadcast was estab
13、lished 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 CENELEC, which is responsible for the standardization of radio and television r
14、eceivers. 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 EBU has active members in about 60 countries in the European broadcasting area;
15、its headquarters is in Geneva. European Broadcasting Union CH-1218 GRAND SACONNEX (Geneva) Switzerland Tel: +41 22 717 21 11 Fax: +41 22 717 24 81 Introduction The present document specifies the transmission system using ETSI Digital Video Broadcasting standards to provide an efficient way of carryi
16、ng multimedia services over hybrid satellite and terrestrial (DVB-SH) networks at frequencies below 3 GHz to a variety of mobile and fixed terminals having compact antennas with very limited directivity. Target terminals include handheld (PDAs, mobile phones etc.), vehicle-mounted, nomadic (laptops,
17、 palmtops etc.) and stationary terminals. The present document identifies ETSI standards in which functionalities and parameters shall be implemented to deliver compliant services. The DVB-SH standard provides a universal coverage by combining a Satellite Component (SC) and a Complementary Ground Co
18、mponent (CGC): in a cooperative mode, the SC ensures geographical global coverage while the CGC provides cellular-type coverage. All types of environment (outdoor, indoor) can then be served, either using the SC from its first day of service, and/or the CCG that is to be progressively deployed build
19、ing on the success of DVB-H. A typical DVB-SH system (see figure 1) is based on a hybrid architecture combining a Satellite Component and, where necessary, a CGC consisting of terrestrial repeaters fed by a broadcast distribution network of various kinds (DVB-S2, fiber, xDSL etc.). The repeaters may
20、 be of three kinds: TR(a) are broadcast infrastructure transmitters which complement reception in areas where satellite reception is difficult, especially in urban areas; they may be collocated with mobile cell site or standalone. Local content insertion at that level is possible, relying on adequat
21、e radio frequency planning and/or waveform optimizations. TR(b) are personal gap-fillers of limited coverage providing local on-frequency re-transmission and/or frequency conversion; typical application is indoor enhancement under satellite coverage; no local content insertion is possible. TR(c) are
22、 mobile broadcast infrastructure transmitters creating a “moving complementary infrastructure“. Depending on waveform configuration and radio frequency planning, local content insertion may be possible. ETSI ETSI TS 102 585 V1.1.1 (2007-07) 5 Service Framing Structure, channel coding and modulation
23、for Satellite Services to Handheld devices (DVB-SH) below 3 GHz“. 2 ETSI EN 300 468 (V1.7.1): “Digital Video Broadcasting (DVB); Specification for Service Information (SI) in DVB systems“. 3 ETSI TS 102 470 (V1.1.1): “Digital Video Broadcasting (DVB); IP Datacast over DVB-H: Program Specific Informa
24、tion (PSI)/Service Information (SI)“. 4 ETSI EN 301 192 (V1.4.1): “Digital Video Broadcasting (DVB); DVB specification for data broadcasting“. 5 ETSI TS 102 468 (V1.1.1): “Digital Video Broadcasting (DVB); IP Datacast over DVB-H: Set of Specifications for Phase 1“. 6 ETSI TS 102 474 (V1.1.1): “Digit
25、al Video Broadcasting (DVB); IP Datacast over DVB-H: Service Purchase and Protection“. 7 ETSI TS 102 472 (V1.2.1): “Digital Video Broadcasting (DVB); IP Datacast over DVB-H: Content Delivery Protocols“. 8 ETSI TS 102 471 (V1.2.1): “Digital Video Broadcasting (DVB); IP Datacast over DVB-H: Electronic
26、 Service Guide (ESG)“. 9 ETSI TS 102 005 (V1.2.1): “Digital Video Broadcasting (DVB); Specification for the use of Video and Audio Coding in DVB services delivered directly over IP Protocols“. ETSI ETSI TS 102 585 V1.1.1 (2007-07) 113 Definitions and abbreviations 3.1 Definitions For the purposes of
27、 the present document, the following terms and definitions apply: gap filler: repeater that receives an already DVB-SH modulated signal and performs physical layer operations on it (no demodulation) like filtering, amplifying, frequency shifting repeater: equipment that delivers a DVB-SH compliant s
28、ignal at its output for signal field strength amplification purposes transmitter: repeater that receives a TS and modulates it according to DVB-SH specification NOTE: A transmitter may be fixed or mobile. 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply:
29、CGC Complementary Ground Component DVB-H Digital Video Broadcasting transmission system for Handheld terminals DVB-S2 Digital Video Broadcasting second generation system for Broadcasting, Interactive Services, News Gathering and other broadband satellite applications DVB-SH Digital Video Broadcastin
30、g Satellite services to Handheld devices (SH) below 3 GHz IP Internet Protocol MPE Multi Protocol Encapsulation MPE-FEC Multi Protocol Encapsulation Forward Error Correction OFDM Orthogonal Frequency Division Multiplexing PSI/SI Program Specific Information/System Information RF Radio Frequency SC S
31、atellite Component SFN Single Frequency Network SFN Single Frequency Network SH-A SH system configuration A (OFDM/OFDM) SH-B SH system configuration B (OFDM/TDM) SH-FRAME Service-to-Handheld FRAME TDM Time Division Multiplexing TPS Transmission Parameters Signalling TS Transport Stream 4 System defi
32、nition 4.1 General DVB-SH is a broadcast transmission system for datagrams, including IP. They may contain data that pertain to multimedia services, file-downloading services, or to other services not mentioned here. DVB-SH specifies: Physical layer. Link layer. Service information. ETSI ETSI TS 102
33、 585 V1.1.1 (2007-07) 12Recommendations about synchronization between modulators of the CGC and SC are also provided. Further information and recommendations about how to use and select the appropriate parameters of DVB-SH are provided in the text and through documents that are listed in References
34、clause. 4.2 Physical layer DVB-SH physical layer shall follow reference 1. 4.3 Link layer Datagrams shall be encapsulated using Multi-Protocol Encapsulation (MPE) as specified in reference 4. Time-slicing shall be used on elementary streams carrying MPE sections as specified in reference 4. Intra bu
35、rst MPE-FEC as specified in reference 4 may be used on elementary streams. Inter burst MPE-FEC may be used on elementary streams. Inter burst MPE-FEC will be specified at a later stage and will be updated in reference 4. 4.4 Service information DVB-SH shall follow references 2 and 3 with relevant up
36、dates on the NIT descriptor “delivery_descriptor“. The use of inter-burst MPE FEC shall be announced using the time_slice_fec_identifier_descriptor present in the INT table (specified in updated reference 4). 4.5 Synchronization If a separate channel from the satellite channel is available for terre
37、strial use, the satellite signal may be repeated terrestrially on that channel. In this case SH-B architecture should be preferred since TDM modulation optimizes satellite power resource and allows the use of code diversity. TDM and OFDM modulators are synchronized by time alignment of TDM and OFDM
38、SH-frames and absolute reference given by SH-Initialization Packet specified in annex A of reference 1. When it is preferred or necessary to repeat terrestrially the satellite signal on the same frequency, OFDM modulation shall be used by the satellite component to constitute an SFN between SC and its CGC using SH-A architecture. OFDM modulators are time synchronized by the absolute reference given by SH initialization packet. ETSI ETSI TS 102 585 V1.1.1 (2007-07) 13History Document history V1.1.1 July 2007 Publication
