1、STD.ETSI ETS 300 777-ENGL 1997 m 3Li0855 O232037 278 m ETS 300 799 September 1997 Source: EBU/CENELEC/ETSI JTC Reference: DUJTC-OODAB-7 ICs: 33.020 Key words: DAB, digital, audio, broadcasting, transport, interface European Broadcasting Uni Union Europenne de Radio-Tlvision Digital Audio Broadcastin
2、g (DAB); Distribution interfaces; Ensemble Transport Interface (ETI) ETSI European Telecommunications Standards Institute ETSI Secretariat Postal address: F-O6921 Sophia Antipolis CEDEX - FRANCE Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE X.400: c=fr, a=atlas, p=ets
3、i, s=secretariat - Internet: secretariat Qetsi.fr Tel.: +33 4 92 94 42 O0 - Fax: +33 4 93 65 47 16 Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. O European Telecommunicati
4、ons Standards Institute 1997. 0 European Broadcasting Union 1997. All rights reserved. COPYRIGHT European Telecommunications Standards InstituteLicensed by Information Handling Services STD-ETSI ETS 300 777-ENGL 1777 m 3400855 0232038 10q m Page 2 ETC 300 799: September 1997 Whilst every care has be
5、en taken in the preparation and publication of this document, errors in content, typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to “ETSI Editing and Committee Support Dept.“ at the address shown on the title page. COPYRIGHT European Telecommunicatio
6、ns Standards InstituteLicensed by Information Handling Services STD-ETSI ETS 300 797-ENGL 1997 W 3400855 0232039 O40 = Page 3 ETS 300 799: September 1997 Contents Foreword . 7 Introduction . . 8 1 2 3 4 5 6 Scope . 11 Normative references . ._._ . 11 Definitions. abbreviations and symbols 12 3.1 Def
7、initions 12 3.2 Abbreviations . - 14 3.3 Symbols _-.-. 15 3.3.1 Numerical ranges 15 Bit and byte numbering 15 3.3.3 Arithmetic operators 15 3.3.4 Logical operators . 15 3.3.2 3.4 3.5 Reserved bits . 16 Ordering of bytes and bits for transmission . 16 Overview of the Ensemble Transport Interface (ETI
8、) definition 17 4.1 4.2 4.3 The Layered approach to the ET1 17 Minimum requirement for ET1 equipment 19 ET1 data capacity _ 19 Logical definition of ETI(LI) . . 19 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 5.10 5.1 1 General structure . 20 Error field (ERR) 20 Frame Characterization field (FC) . 22 5.3.1
9、Frame Count (FCT) . 22 5.3.2 Fast Information Channel Flag (FICF) 22 5.3.3 Number of Streams (NST) 22 5.3.4 Frame Phase (FP) . 23 5.3.5 Mode Identity (MID) . 23 5.3.6 Frame Length (FL) 23 Stream Characterization (STC) . 24 5.4.1 Sub-channel Stream Characterization (SSTC “) 24 5.4.1.1 Sub-channel Ide
10、ntifier (SCID) . 24 5.4.1.2 Sub-channel Start Address (SAD) . 24 5.4.1.3 Sub-channel Type and Protection Level (TPL) 25 5.4.1.4 Sub-channel Stream Length (STL) 25 End-Of-Header data (EOH) . 25 5.5.1 Multiplex Network Signalling Channel (MNSC) . 25 5.5.2 Header Cyclic Redundancy Checksum (CRC h) 26 M
11、ain Stream data (MST) . 26 End Of Frame (EOF) . 2 5.7.1 Cyclic Redundancy Checksum (CRC) 27 5.7.2 Reserved bytes 27 ETI(LI) Time Stamp (TIST) 27 Null transmissions 27 Total number of bytes carrying information . 27 Maximum size of ETI(LI) 27 Network Independent layer for G.703 interfaces. ETI(NI) or
12、 ETI(NI. G.703) 28 6.1 General _. . 28 6.2 Adaptation of the logical layer . 92 6.2.1 Synchronization Field (SYNC) . 29 6.2.1.1 Error Status (ERR) 29 COPYRIGHT European Telecommunications Standards InstituteLicensed by Information Handling ServicesSTD-ETSI ETS 300 777-ENGL 1777 3q00855 0232040 8b2 P
13、age 4 ETS 300 799: September 1997 6.2.1.2 ETI(LI) Data Field (LIDATA) . 30 Frame Padding Field (FRPD) . 30 Frame Synchronization Field (FSYNC) . 29 6.3 Physical interface 30 6.2.2 6.2.3 7 Network Independent Layer for V.11 interfaces. ETI(NI. V11) . 31 7.1 General . . 31 7.2 Adaptation of the logica
14、l layer . 32 7.2.1 Synchronization Field (SYNC) 32 7.2.1.1 7.2.1.2 ETI(LI) Data Field (LIDATA) . 33 Frame Padding Field (FRPD) . 33 Error Status (ERR) 32 Frame Synchronization Field (FSYNC) . 32 7.2.2 7.2.3 7.3 Physical interface 33 8.4 8.5 8.6 8.7 8 Network Adaptation for G.704 networks. ETI(NA. G.
15、704) 34 8.1 General . . -. 34 8.2 Transparency of ETI(NA. G.704) layer to ETI(LI) 35 8.2.1 Transparency of ETI(NA. G.704) 5592 layer to ETI(LI) . 35 8.2.2 Transparency of ETI(NA, G.704) 5376 layer to ETI(LI) . 35 8.3.1 G.704 reserved bytes . 36 8.3.2 ETI(NA, G.704) reserved bytes 36 8.3.2.1 Multifra
16、me management byte, M b/,s 36 8.3.2.2 Multiframe supervision byte, sb(s . 38 ETI(NA, G.704) multiframe generation . 38 8.4.1 General description . 38 8.4.2 Error coding and interleaving for ETI(NA. G.704) 5592 39 8.4.2.1 8.4.2.2 Interleaving 40 8.4.2.3 Output array formation 40 Error coding and inte
17、rleaving for ETI(NA. G.704) 5376 40 8.4.3.1 Coding array formation 40 8.4.3.2 Interleaving 41 8.4.3.3 Output array formation 41 Order of data transmission 41 Error protection code Al Synchronization . 41 Synchronization of G.704 frames . 41 Synchronization of ETI(NA. G.704) multiframes . 42 Physical
18、 interface 42 Modifying the ETI(LI) STAT field . 42 . 8.3 ETI(NA, G.704) structure 35 Coding array formation 39 8.4.3 8.7.1 8.7.2 8.8 8.9 8.10 Illustration of the capacity of ETI(NA, G.704) 45 Annex A (normative): Coding of MNSC Data . Q A.l Introduction 46 A.2 Frame Synchronous Signalling (FSS) . 4
19、6 FSS messages structure 64 A.2.1 A.2.2 Pre-assigned FSS message types 46 A.3 Frame Asynchronous Signalling (ASS) . 47 A.3.1 A.3.2 ASS messages structure 74 Pre-assigned ASS message types 47 A.3.2.1 ASS message type O: Transmitter Set-up and Control Information (TSC) . 47 Annex B (normative): Coding
20、 of NASC Data A9 B.l General 49 8.2 Frame Synchronous Signalling (FSS) . 49 COPYRIGHT European Telecommunications Standards InstituteLicensed by Information Handling Services STD-ETSI ETS 300 779-ENGL 1977 W 3400855 0232041 7T7 W Page 5 ETS 300 799: September 1997 6.3 Asynchronous Signalling (ASS) _
21、. 49 Annex C (normative): Coding of timestamps 50 C.l General . 50 C.2 Timestamp coding -50 C.2.1 Expected range of timestamp values . 50 C.2.2 Null timestamp . 50 C.2.3 Reserved timestamp values 50 C.2.4 Timestamp levels . ._._ 50 C.3 Mapping to ETI(LI) timestamp bits . “- . 50 C.4 Mapping to ET1 (
22、NA. G.704) timestamp bits 51 C.5 Interpretation of timestamp value . 51 C.6 Use of timestamps in LI and NA layers 51 Annex D (normative): Calculation of CRC words in the ET1 52 Annex E (normative): Behaviour of the ET1 during re-configuration 53 E.l Background ._ 53 . E.2 Multiplex reconfiguration .
23、-. 53 Annex F (informative): Managing delay in the Ensemble Transport network . 55 F.l General 55 F.2 Dynamic delay compensation 56 Annex G (informative): Network testing and monitoring 8 G.l General 58 G.2 Pseudo Random Binary Sequence (PRBS) 58 G.2.1 PRBS generator . 58 G.2.2 PRBS extractor 59 G.3
24、 PRBS containers . 59 Full DAB channel . 59 Single DAB sub-channel . 59 G.3.1 G.3.2 G.3.3 G.704 measurement . 60 Annex H (informative): Cascading in the Ensemble Transport network 61 H.l General . 61 H.2 Management of the overall delay to allow SFN operation . 61 H.3 Testing and monitoring in a casc
25、aded network . 61 Annex J (informative): Carrying ET1 on 1 544 kbit/s links . 63 J.l Introduction 63 J.2 General outline of ETI(NA. G.704-T1) 63 J.3 Transparency of ETI(NA. G.704-T1) layer to ETI(LI) 63 COPYRIGHT European Telecommunications Standards InstituteLicensed by Information Handling Service
26、sSTD-ETSI ETS 300 777-ENGL L997 3400855 O232042 b35 Page 6 ETS 300 799: September 1997 J.3.1 J.3.2 Transparency of ETI(NA. G.704-T1) 4464 layer to ETI(LI) 63 Transparency of ETI(NA. G.704-T1) 4320 layer to ETI(LI) 63 J.4 ETI(NA. G.704-Tl) Structure . _._ 64 J.5 Error protection for ETI(NA. G.704-T1)
27、 . 64 J.6 Illustration of the capacity of ETI(NA. G.704-T1) 65 Annex K (informative): Bibliography . _ 69 History 70 COPYRIGHT European Telecommunications Standards InstituteLicensed by Information Handling ServicesSTD-ETSI ETS 300 777-ENGL 1997 = 3400855 02320Li3 571 = Page 7 ETS 300 799: September
28、 1997 Foreword This European Telecommunication Standard (ETS) has been produced by the Joint Technical Committee (JTC) of the European Broadcasting Union (EBU), Comit Europen de Normalisation ELECtrotechnique (CENELEC) and the European Telecommunications Standards Institute (ETSI). NOTE: The EBU/ETS
29、I JTC was established in 1990 to co-ordinate the drafting of ETSs in the specific field of broadcasting and related fields. Since 1995 the JTC became a tripartite body by including in the Memorandum of Understanding also CENELEC, which is responsible for the standardization of radio and television r
30、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;
31、its headquarters is in Geneva*. * European Broadcasting Union Case Postale 67 CH-1218 GRAND SACONNEX (Geneva) Switzerland Tel: +41 22 71 7 21 11 Fax: 41 22 717 24 81 EUREKA Project 147 (DAB*) EUREKA Project 147 was established in 1987, with funding from the EC, to develop a system for the broadcasti
32、ng of audio and data to fixed, portable or mobile receivers. Their work resulted in the publication of a European Standard, ETS 300 401 l, for DAB which now has world-wide acceptance. The members of the Eureka 147 Project are drawn from broadcasting organizations and telecommunication providers toge
33、ther with companies from the professional and consumer electronics industry. * DAB is a registered trademark owned by one of the EUREKA 147 partners. ETSI Project Team PT 84V An ETSI Project Team was formed to produce this ETS describing the Digital Audio Broadcasting (DAB) Ensemble Transport Interf
34、ace (ETI). The work of the Project Team was based on studies carried out by a EUREKA 147 Task Force on the definition of the ETI. The Project Team consisted of members of European broadcasting organizations and the consumer and professional electronics industry who had also been involved in the work
35、 of the EUREKA Task Force. Transposition dates Date of adoption: Date of latest announcement of this ETS (doa): 22 August 1997 31 December 1997 Date of latest publication of new National Standard or endorsement of this ETS (dop/e): 30 June 1998 1 Date of withdrawal of any conflicting National Standa
36、rd (dow): 30 June 1998 COPYRIGHT European Telecommunications Standards InstituteLicensed by Information Handling Services STD-ETSI ETS ICI0 777-ENGL 1797 3400855 0232044 408 Page 8 ETS 300 799: September 1997 Introduction This ETS is one of a set associated with ETS 300 401 l describes the transmitt
37、ed signal, the interface between the broadcasters transmitters and the listeners receiver. The associated ETSs describe additional interfaces which can be used by broadcasters or network providers to build DAB networks. Figure 1 shows a DAB network in outline. For convenience, the Network is split i
38、nto a number of different parts, each managed by a different entity. The different entities are: the Programme/Data provider, the Service Component provider, the Ensemble provider and the Transmission Network provider. NOTE: A Service Component provider may be generating a full DAB service or a comp
39、onent of a DAB service. For the purposes of this ETS, the terms Service provider and Service Component provider are interchangeable. Program me/Data provider The Programme/Data provider is the originator of the audio programme or the data being carried within the DAB Service Component. The format fo
40、r the output of the Programme/Data provider may take many different forms and should be agreed between the ProgrammeiData provider and the Service Component provider. Service Component provider The Service Component provider is producing one or more complete Service Components which can form the com
41、plete DAB Service, but may not. The data from the Service Component provider will be of three different types: - Service Component data which is to be inserted into the DAB Main Service Channel (MSC); - Service Information related to the Service Component data which is to be inserted into the Fast I
42、nformation Channel (FIC); - Other data, not intended for transmission, including status monitoring or control. The interface between the Service Component provider and the Ensemble provider is known as the Service Transport Interface (STI) and is defined in EN 300 797 2. Ensemble provider The Ensemb
43、le provider receives a set of service components from one or more Service Component providers. He then formats the FIC, and generates an unambiguous description of the full DAB Ensemble. The ensemble description is passed to the Transmission Network provider via an interface called the ET1 which is
44、the subject of this ETS. Transmission Network provider The Transmission Network provider generates the DAB Ensemble and transmits it to the receiver. The output of the Transmission provider is defined by ETS 300 401 l. In some cases, as an intermediate step, the Transmission provider may find it con
45、venient to generate a base-band representation of the signal to be transmitted. The base-band representation, known as the Digital baseband I/Q Interface, is a set of digital samples defining the In-phase (I) and Quadrature (Q) components of the final carrier. This interface is defined in EN 300 798
46、 3 and provides a convenient interface between digital processing equipment and radio-frequency modulating equipment. COPYRIGHT European Telecommunications Standards InstituteLicensed by Information Handling Services(1 c W c O 0 - n u EJ $ W “ .- v) STD-ETSI ETS 300 777-ENGL 1997 = 3400855 0232045 3
47、4Li II u) c W L z o, C m a O COPYRIGHT European Telecommunications Standards InstituteLicensed by Information Handling Services STD.ETS1 ETS 300 777-ENGL 17% 3400855 023204b 280 Page 11 ETS 300 799: September 1997 1 Scope This European Telecommunication Standard (ETS) establishes a standard method f
48、or the distribution of DAB signals between DAB multiplexing equipment, which may be located at the broadcasters studio centres, and DAB modulation equipment located at transmission sites. ETS 300 401 l established a broadcasting standard for a DAB system. Broadcasters who implement DAB networks requ
49、ire methods for transporting DAB signals, or the component parts of a DAB signal, between studio centres, where the programme or data service originates, and the transmitter sites from which the signal will be radiated. The network of circuits connecting the studio centre to the transmitters is generally known as the Distribution Network. This ETS is applicable to Distribution Networks used in a DAB System. it describes the characteristics of a signal suitable for transporting a full DAB Ensemble, comprising a number of s
