1、 ETSI TS 102 693 V1.1.2 (2009-11)Technical Specification Digital Audio Broadcasting (DAB);Encapsulation of DAB Interfaces (EDI)European Broadcasting Union Union Europenne de Radio-Tlvision EBUUER ETSI ETSI TS 102 693 V1.1.2 (2009-11)2Reference RTS/JTC-DAB-63 Keywords broadcasting, DAB, digital, MUX,
2、 radio 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 of the present documen
3、t 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). In case of dispute,
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5、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 authorized by written
6、 permission. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2009. European Broadcasting Union 2009. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTM, TIPHONTM, the TIPHON logo and the ETSI logo are Trade Marks of ETSI
7、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. GSM and the GSM
8、logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI TS 102 693 V1.1.2 (2009-11)3Contents Intellectual Property Rights 6g3Foreword . 6g3Introduction 6g31 Scope 8g32 References 8g32.1 Normative references . 8g32.2 Informative references 9g33 Definitions, symbols, abbreviations
9、and conventions 9g33.1 Definitions 9g33.2 Symbols 10g33.3 Abbreviations . 10g33.4 Conventions 12g34 General description. 12g34.1 System overview 12g34.2 System architecture 13g34.2.1 TAG Items and TAG Packets (informative) . 14g34.3 EDI Packets 14g34.3.1 STI-D(LI) 15g34.3.2 ETI(LI) 16g34.3.3 Other L
10、I (Informative) 16g35 TAG Items 16g35.1 Mandatory TAG Items . 16g35.1.1 Protocol type and revision (*ptr) 16g35.1.2 DAB STI-D(LI) Management (dsti) . 17g35.1.3 DAB ETI(LI) Management (deti) . 18g35.1.4 STI-D Payload Stream (ss) . 20g35.1.5 ETI Sub-Channel Stream (est) 21g35.2 Optional TAG Items . 22
11、g35.2.1 Information (info) . 22g35.2.2 Network Adapted Signalling Channel (nasc) 23g35.2.3 Frame Padding User Data (frpd) . 23g35.3 Revision history 23g3Annex A (normative): Regenerating LI Frame from EDI Packets . 25g3A.1 Regenerating an STI-D(LI) Frame from an EDI Packets . 25g3A.1.1 FC - rfa (3 b
12、its) . 25g3A.1.2 FC - DL (13 bits) 25g3A.1.3 FC - rfa (8 bits) . 26g3A.1.4 FC - NST (11 bits) 26g3A.1.5 STC - STLm(13 bits) . 26g3A.1.6 EOH - rfa (16 bits) 26g3A.1.7 EOH - CRCH (16 bits) . 26g3A.1.8 MST - CRCSTm(16 bits) 26g3A.1.9 EOF - rfa (32 bits) 26g3A.2 Regenerating an ETI(LI) Frame from an EDI
13、 Packet 28g3A.2.1 FC - NST (7 bits) 28g3A.2.2 FC - FL (11 bits) . 28g3A.2.3 STC - STLn(10 bits) 28g3A.2.4 EOH - CRCh(16 bits) 29g3A.2.5 EOF - CRC (16 bits) . 29g3ETSI ETSI TS 102 693 V1.1.2 (2009-11)4A.2.6 EOF - Rfu (16 bits) . 29g3Annex B (normative): Conversion and Backwards Compatibility 31g3B.1
14、STI-D Special Considerations 31g3B.1.1 Control Frame Size field (CFS) 31g3B.1.2 Control Frame field (CF) 31g3B.1.3 Frame Padding field (FRPD) 31g3B.1.4 Timestamps 32g3B.1.4.1 Converting to EDI . 32g3B.1.4.2 Converting from EDI 32g3B.2 ETI Special Considerations 32g3B.2.1 Frame Padding Field (FRPD) .
15、 32g3B.2.2 Timestamps 33g3B.2.2.1 Converting to EDI . 33g3B.2.2.2 Converting from EDI 33g3B.2.3 Network Adapted Signalling Channel (NASC) 33g3B.2.3.1 Converting to EDI . 33g3B.2.3.2 Converting from EDI 33g3B.3 ETI Network Deployment and Timing. 34g3B.3.1 Legacy-LI Network 34g3B.3.2 EDI Network 34g3B
16、.3.3 Mixed EDI and Legacy-LI Network 35g3B.3.4 EDI/Legacy-LI Converters . 35g3B.3.4.1 EDI to Legacy-LI Converter . 35g3B.3.4.2 Legacy-LI to EDI Converter . 36g3B.3.5 Full Network Example (including Converters) 36g3B.4 Network Deployment Considerations 37g3Annex C (informative): DAB Modulator - Conti
17、nuity of Transmission . 38g3C.1 Overview 38g3C.2 Recreating Essential Fields 39g3C.2.1 DLFC (Frame Count High (FCTH) and Frame Count (FCT) . 39g3C.2.2 Frame Phase (FP) . 39g3C.2.3 Timestamp (ATST) 39g3C.2.4 Error Field (STAT) . 39g3C.2.5 FIC Data . 40g3C.2.6 ETI sub-channel streams 40g3C.4 Required
18、Configuration Options 40g3C.5 Notification . 40g3C.6 Use in SFN Application . 40g3Annex D (normative): Physical presentation . 41g3D.1 Ethernet (IP over Ethernet) . 41g3D.1.1 Transport Layer 41g3D.1.2 Network Layer 41g3D.1.3 Link Layer 42g3Annex E (normative): EDI Packet Resend Functionality. 43g3E.
19、1 Theory of Operation . 43g3E.2 Parameters 44g3E.2.1 Parameters for the EDI Decoder . 44g3E.2.2 Parameters for the EDI Encoder . 45g3E.3 Requesting an EDI Packet Resend (EDI Decoder) 46g3E.4 Resending EDI Packets (EDI Encoder) 46g3ETSI ETSI TS 102 693 V1.1.2 (2009-11)5Annex F (informative): EDI Time
20、stamps 48g3F.1 Relationships 48g3F.2 Rationale . 48g3History 49g3ETSI ETSI TS 102 693 V1.1.2 (2009-11)6Intellectual 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
21、available for ETSI members 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
22、server (http:/webapp.etsi.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 ma
23、y be, or may become, essential to the present document. Foreword This 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 St
24、andards 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 CENELEC, wh
25、ich 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 EBU has acti
26、ve members in about 60 countries in the European broadcasting area; 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 The Eureka Project 147 was established in 1987, with funding from the European Commis
27、sion, to develop a system for the broadcasting of audio and data to fixed, portable or mobile receivers. Their work resulted in the publication of European Standard, EN 300 401 1, for DAB (see note) which now has worldwide acceptance. The members of the Eureka Project 147 are drawn from broadcasting
28、 organizations and telecommunication providers together with companies from the professional and consumer electronics industry. NOTE: DAB is a registered trademark owned by one of the Eureka Project 147 partners. Introduction The present document provides a mechanism for the encapsulation of STI-D (
29、see EN 300 797 4) and ETI (see ETS 300 799 5) compliant data streams for distribution over IP networks. EDI is based on the existing Distribution and Communications Protocol (DCP - TS 102 821 2), and therefore a layered approach relevant to unique IP network designs can be implemented. An EDI Packet
30、 represents a single STI-D or ETI 24 ms logical frame. In order to maximize efficiency across the IP network, unnecessary LI data (i.e. data formatted according to the STI-D or ETI “logical interface“), which can be reliably reproduced at the receiver is removed. The TAG Items are grouped to form a
31、single EDI Packet, and passed onto DCP for Application Framing (AF). EDI is designed to distribute STI-D and ETI over varying conditions of IP networks, and ensure the robust delivery of STI-D and ETI compliant data over networks affected by congestion, jitter and limited packet loss. EDI can be con
32、figured to operate a re-send function, or re-construct missed packets at the receiver in times of packet loss. Once the EDI Packet has been passed to the DCP stage, Protection, Fragmentation and Transport (PFT) can add a further layer of Reed Solomon block coding and fragmentation if required; this
33、is especially attractive for uni-directional or low Quality of Service (QoS) networks. ETSI ETSI TS 102 693 V1.1.2 (2009-11)7EDI utilizes open internet standards, and can be configured for operation over uni-directional unicast and multicast UDP/IP, and connection based TCP/IP, including MTU adaptat
34、ions. An EDI Decoder may be designed to re-create a compliant STI-D(LI) or ETI(LI) single 24 ms logical frame, which can be used in legacy networks, as all specific framing requirements may be passed through the transparent EDI encapsulation stage. As such, EDI can be configured to operate in a mixe
35、d legacy network (including maintaining existing timing constraints), in which a combination of EDI and traditional (non-IP based) delivery solutions are employed, or as an EDI delivered network only. ETSI ETSI TS 102 693 V1.1.2 (2009-11)81 Scope The present document gives the specification for the
36、delivery of STI-D(LI) and ETI(LI) over IP networks. An example for STI-D would be from a DAB Service Multiplexer to a DAB Ensemble Multiplexer. An example for ETI would be between DAB Ensemble Multiplexers and DAB Modulators (COFDM). 2 References References are either specific (identified by date of
37、 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 document or a part thereof and only in the following cases: - if it is accepted that it will be possible to use al
38、l 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 the expected location might be found at http:/docbox.etsi.org/Reference. NOTE: While any hyperlinks included in t
39、his 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 application of the present document. For dated references, only the edition cited applies. For non-specific reference
40、s, the latest edition of the referenced document (including any amendments) applies. 1 ETSI EN 300 401: “Radio Broadcasting Systems; Digital Audio Broadcasting (DAB) to mobile, portable and fixed receivers“. 2 ETSI TS 102 821: “Digital Radio Mondiale (DRM); Distribution and Communications Protocol (
41、DCP)“. 3 ISO/IEC 10646: “Information technology - Universal Multiple-Octet Coded Character Set (UCS)“. 4 ETSI EN 300 797: “Digital Audio Broadcasting (DAB); Distribution interfaces; Service Transport Interface (STI)“. 5 ETSI ETS 300 799: “Digital Audio Broadcasting (DAB); Distribution interfaces; En
42、semble Transport Interface (ETI)“. 6 IEEE 802.3-2002: “ Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks specific requirements - Part 3: Carrier Sense Multiple Access with Collision Detection (CSMA/CD) Access Method and Physi
43、cal Layer Specifications“. 7 TIA/EIA-568-B (series): “Commercial Building Telecommunications Cabling Standard - Part 1: General Requirements“. 8 ITU-T Recommendation G.703 (1972): “Physical/Electrical characteristics of hierarchical digital interfaces: Section 6. Interface at 2 048 kbit/s“. 9 ITU-T
44、Recommendation G.704 (1988): “Synchronous frame structures used at primary and secondary hierarchical levels: Section 2.3 Basic frame structure at 2 048 kbit/s“. ETSI ETSI TS 102 693 V1.1.2 (2009-11)92.2 Informative references The following referenced documents are not essential to the use of the pr
45、esent document 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. Not applicable. 3 Definitions, symbols, abbreviations and conventions 3.1 Definitions For the purposes of t
46、he present document, the following terms and definitions apply: Application Framing (AF): layer of the DCP providing a logical grouping of a number of TAG Items byte: collection of 8-bits Distribution and Communications Protocol (DCP): transport layer communications protocol providing fragmentation,
47、 addressing and/or reliable data transmission over errored channels using a Reed Solomon code to provide Forward Error Correction (FEC) EDI Encoder: application or device that generates an EDI conforming output stream and sends this stream through one of DCPs basic transmission layers EDI Decoder: a
48、pplication or device that receives and processes an EDI conforming EDI input stream through one of DCPs basics transmission layers EDI Packet: TAG Packet containing those TAG Items transporting ETI(LI) or STI-D(LI) information Fast Information Block (FIB): data burst of 256 bits NOTE: The sequence o
49、f FIBs is carried by the Fast Information Channel. The structure of the FIB is common to all transmission modes. Fast Information Channel (FIC): part of the transmission frame, comprising the Fast Information Blocks, which contain the multiplex configuration information together with optional service Information and data service components Greenwich Mean Time (GMT): historically standard time for all international applications, now superseded by UTC Global Position System (GPS): constellation of satellites providing accurate time and
