1、 ETSI EN 302 550-1-1 V1.1.1 (2010-02)European Standard (Telecommunications series) Satellite Earth Stations and Systems (SES);Satellite Digital Radio (SDR) Systems;Part 1: Physical Layer of the Radio Interface;Sub-part 1: Outer Physical LayerETSI ETSI EN 302 550-1-1 V1.1.1 (2010-02)2Reference DEN/SE
2、S-00312-1-1 Keywords digital, layer 1, radio, 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 Importan
3、t notice Individual copies 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 Po
4、rtable Document Format (PDF). 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. Informat
5、ion on the current status of 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
6、may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2010. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTM, TIPHONTM, the TIPHON logo and the ETSI logo are Trade
7、 Marks of ETSI registered 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. LTE is a Trade Mark of ETSI currently being registered for the benefit of its Members and of the 3GPP Organizational Partners. G
8、SM and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI EN 302 550-1-1 V1.1.1 (2010-02)3Contents Intellectual Property Rights 5g3Foreword . 5g3Introduction 5g31 Scope 7g32 References 7g32.1 Normative references . 7g32.2 Informative references 7g33 Symbols and abbre
9、viations . 8g33.1 Symbols 8g33.2 Abbreviations . 8g34 Outer physical layer 8g34.1 Overview 8g34.2 Interfacing to Service Layer (SL) . 12g34.3 S-TS to OPL adaptation layer: S-TS encapsulation . 13g34.3.1 PF infoword format for S-TS stream type 0 (dummy packet) 14g34.3.2 PF infoword format for S-TS st
10、ream type 1 (transparent) 14g34.3.3 PF infoword format for S-TS stream type 2 (MPEG-TS) . 14g34.3.4 PF infoword format for S-TS stream type 3 (IP stream) . 16g34.4 PL FEC: turbo code 17g34.4.1 Interface to OPL encapsulation . 17g34.4.2 Turbo encoder . 18g34.4.3 Turbo code termination . 21g34.4.4 Tur
11、bo Interleavers . 23g34.4.5 Output of turbo encoder 24g34.4.6 FEC Parameter signalling . 24g34.4.7 Diversity combining . 25g34.4.8 FEC Parameters for the signalling pipe 25g34.5 Mixer 25g34.6 Segmenter and Slot demultiplexer 26g34.7 Disperser. 27g34.8 Collector . 28g34.9 C-TS multiplexer 29g34.10 Co
12、nfiguration of the OPL . 30g34.10.1 Signalling pipe 30g34.10.1.1 Encoding and interleaving of signalling pipe 30g34.10.1.2 SOF Preamble . 31g34.10.1.3 Format of the signalling pipe infoword . 31g34.10.2 Partitioning of the C-TS multiplex . 36g34.10.3 S-TS schedule and slot allocation . 37g34.10.4 S-
13、TS re-scheduling and slot re-allocation . 38g34.10.5 Birth/death of S-TS . 38g34.10.6 S-TS ID . 38g34.10.7 Calculation of the disperser profile . 39g34.10.8 Configuration of the tail pipe 40g34.10.9 Unused pipes . 40g34.10.10 Announcing reconfigurations and reschedulings 40g34.10.11 Pipe reconfigura
14、tion 41g34.11 Network aspects . 45g3Annex A (normative): Number format definitions . 47g3A.1 Number format and transmission order 47g3A.2 SI-Prefix Notation 47g3ETSI ETSI EN 302 550-1-1 V1.1.1 (2010-02)4A.3 Default Settings 47g3Annex B (normative): Calculation of the CRC word . 48g3Annex C (informat
15、ive): Bibliography . 49g3History 50g3ETSI ETSI EN 302 550-1-1 V1.1.1 (2010-02)5Intellectual 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 membe
16、rs and non-members, and can be found in ETSI 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.ets
17、i.org/IPR/home.asp). 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 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, ess
18、ential to the present document. Foreword This European Standard (Telecommunications series) has been produced by ETSI Technical Committee Satellite Earth Stations and Systems (SES). The present document is part 1, sub-part 1 of a multi-part deliverable covering Satellite Digital Radio (SDR), as iden
19、tified below: Part 1: “Physical Layer of the Radio Interface“; Sub-part 1: “Outer Physical Layer“; Sub-part 2: “Inner Physical Layer Single Carrier Modulation“; Sub-part 3: “Inner Physical Layer Multi Carrier Modulation“. National transposition dates Date of adoption of this EN: 15 February 2010 Dat
20、e of latest announcement of this EN (doa): 31 May 2010 Date of latest publication of new National Standard or endorsement of this EN (dop/e): 30 November 2010 Date of withdrawal of any conflicting National Standard (dow): 30 November 2010 Introduction TC SES is producing standards and other delivera
21、bles for Satellite Digital Radio (SDR) systems. An SDR system enables broadcast to fixed and mobile receivers through satellites and complementary terrestrial transmitters. Functionalities, architecture and technologies of such systems are described in TR 102 525 i.1. Several existing and planned ET
22、SI standards specify parts of the SDR system, with the aim of interoperable implementations. The physical layer of the radio interface (air interface) is divided up into the outer physical layer, the inner physical layer with a single carrier modulation, and the inner physical layer with multi carri
23、er modulation. These parts can be used all together in SDR compliant equipment, or in conjunction with other existing and future specifications. ETSI ETSI EN 302 550-1-1 V1.1.1 (2010-02)6The present document specifies the outer physical layer. The inner physical layer with single carrier modulation
24、is specified in EN 302 550-1-2 i.2, and with multi carrier modulation in EN 302 550-1-3 i.3. Guidelines for using the physical layer standard can be found in TR 102 604 i.4. The physical layer specifications have previously been published as “Technical Specification (TS)“ type ETSI deliverables. The
25、 present document supersedes TS 102 550 i.5 and is recommended for new implementations. ETSI ETSI EN 302 550-1-1 V1.1.1 (2010-02)71 Scope The present document concerns the radio interface of SDR broadcast receivers. It specifies the functionality of the outer physical layer. It allows implementing t
26、his part of the system in an interoperable way. 2 References References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For a specific reference, subsequent revisions do not apply. Non-specific reference may be made only to a complete
27、document or a part thereof and only in the following cases: - if it is accepted that it will be possible to use all future changes of the referenced document for the purposes of the referring document; - for informative references. Referenced documents which are not found to be publicly available in
28、 the expected location might be found at http:/docbox.etsi.org/Reference. NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee their long term validity. 2.1 Normative references The following referenced documents are indispensable for the app
29、lication of the present document. For dated references, only the edition cited applies. For non-specific references, the latest edition of the referenced document (including any amendments) applies. 1 ISO/IEC 13818-1: “Information technology - Generic coding of moving pictures and associated audio i
30、nformation: Systems“. 2 ISO/IEC 11172-1: “Information technology - Coding of moving pictures and associated audio for digital storage media at up to about 1,5 Mbit/s - Part 1: Systems“. 2.2 Informative references The following referenced documents are not essential to the use of the present document
31、 but they assist the user with regard to a particular subject area. For non-specific references, the latest version of the referenced document (including any amendments) applies. i.1 ETSI TR 102 525: “Satellite Earth Stations and Systems (SES); Satellite Digital Radio (SDR) service; Functionalities,
32、 architecture and technologies“. i.2 ETSI EN 302 550-1-2: “Satellite Earth Stations and Systems (SES); Satellite Digital Radio (SDR) Systems; Part 1: Physical Layer of the Radio Interface; Sub-part 2: Inner Physical Layer Single Carrier Modulation“. i.3 ETSI EN 302 550-1-3: “Satellite Earth Stations
33、 and Systems (SES); Satellite Digital Radio (SDR) Systems; Part 1: Physical Layer of the Radio Interface; Sub-part 3: Inner Physical Layer Multi Carrier Modulation“. i.4 ETSI TR 102 604: “Satellite Earth Stations and Systems (SES); Satellite Digital Radio (SDR) Systems; Guidelines for the Use of the
34、 Physical Layer Standards“. ETSI ETSI EN 302 550-1-1 V1.1.1 (2010-02)8i.5 ETSI TS 102 550 (V1.3.1): “Satellite Earth Stations and Systems (SES); Satellite Digital Radio (SDR) Systems; Outer Physical Layer of the Radio Interface“. 3 Symbols and abbreviations 3.1 Symbols For the purposes of the presen
35、t document, the following symbols apply: Code rate 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: AWGN Additive White Gaussian Noise BCH Bose, Ray-Chaudhuri, Hocquenghem code CRC Cyclic Redundancy Checksum C-TS Channel-Transport Stream CU Capacity Unit
36、 FEC Forward Error Correction ID IDentifier IP Internet Protocol IPL Inner Physical LayerIU Interleaving Unit LSB Least Significant BitMPEG-TS MPEG Transport Stream MSB Most Significant Bit MTU Maximum Transfer Unit OPL Outer Physical LayerPF Physical layer FEC PFIW Physical layer FEC Info Word PL P
37、hysical Layer QoS Quality of Service RFU Reserved for Future Use SDR Satellite Digital RadioSL Service Layer SOF Start Of Frame S-TS Service-Transport Stream VBR Variable Bit Rate WER Word Error Rate XOR eXclusive OR4 Outer physical layer Refer to annex A for number format definitions. 4.1 Overview
38、Figure 1 displays the position and the interfaces of the Outer Physical Layer (in the following denoted by OPL) inside a complete broadcast transmission chain. The OPL connects to the Service Layer, where the interface is Service Transport Streams (S-TS) on the one side, and on the other side to the
39、 Inner Physical Layer (IPL - described in EN 302 550-1-2 i.2 and EN 302 550-1-3 i.3), where the interfaces are Channel Transport Streams (C-TS). ETSI ETSI EN 302 550-1-1 V1.1.1 (2010-02)9Figure 1: Position and interfaces of the OPL inside the transmission chain The following table gives an overview
40、about the terminology used for the data streaming through the system. Description Comments SC Service component E.g. source encoded audio or video or other data SC-TS Service component transport stream ES Elementary Stream ES: Elementary Stream, a generic term for one of the coded video, coded audio
41、 or other coded data bitstreams, cf. MPEG-1 standard ISO/IEC 11172-1 2. Program A program is a collection of program elements. Program elements may be elementary streams (ES, SC-TS). In line with the definition used for MPEG standard ISO/IEC 13818-1 1. Service Set of programs and related auxiliary i
42、nformation S-TS Service transport stream Generalized term for transport stream. MPEG-TS is one example for a service transport stream. MPEG-TS Transport stream compliant to MPEG standard ISO/IEC 13818-1 1 C-TS Channel transport stream Data stream (bit stream) representing the input to the modulator
43、= data stream including all redundancy added by the FEC encoder - possibly with time-interleaving - and carrying configuration signalling information for the receiver. The content of the C-TS is referred to as a C-TS multiplex (a multiplex of encoded and interleaved S-TS plus signalling information)
44、. A bouquet of programs is carried by one or more C-TS multiplexes. ETSI ETSI EN 302 550-1-1 V1.1.1 (2010-02)10Description Comments Channel RF resource The meaning “RF resource“ is aligned with the terminology used for DVB. The functionality of the Outer Physical Layer is to provide Forward Error Co
45、rrection and time interleaving for resistance against a variety of transmission channel conditions. Different transport channels are used in the OPL to offer the requested performance for different types of services. These transport channels are called pipes in the scope of the present document. The
46、 OPL is configurable in terms of error protection, outage mitigation in case of signal losses, end-to-end delay, zapping time, payload throughput and receiver complexity. Multiple pipes can be used as described above. Each of them contains FEC, Mixer and Disperser. One special pipe exists whose func
47、tionality is to transmit all relevant parameters to decode the other pipes. The so-called signalling pipe is always transmitted at the lowest coderate which is 1/5. The modulation of the signalling pipe is equal to the modulation of the data pipes. The general block diagram of the OPL functionality
48、is given in figure 2. ETSI ETSI EN 302 550-1-1 V1.1.1 (2010-02)11Figure 2: General overview of the OPL functionality ETSI ETSI EN 302 550-1-1 V1.1.1 (2010-02)12The processing, multiplexing and demultiplexing of the data in the OPL is displayed in figure 3. An S-TS scheduler multiplexes together all
49、S-TS contained in the pipe. The scheduler is controlled by an S-TS schedule, which determines the number of words taken from one S-TS before the multiplexer selects the next S-TS of the pipe. After an encapsulation, FEC encoding and mixing, the codewords (segmented into interleaver units) are demultiplexed codeword-wise to the slots of the considered pipe, each of the slots possessing its individual disperser. After demultiplexing a codeword to a slot, i.e. to the input of its disperser, the slot demultiplexer selects the next slot/disper
