1、EUROPEAN w I ELECOMMUNICATION STANDARD ETS 300 814 March 1998 Source: EBU/CENELEC/ETSI JTC Reference: DWJTC-DVB-29 ICs: 33.020 Key words: DVB, broadcasting, digital, video, TV, SDH European Broadcasting Union Union Europenne de Radio-Tlvision Diyiral vide3 Broadcasr;r.ig Digital Video Broadcasting (
2、DVB); DVB interfaces to Synchronous Digital Hierarchy (SDH) networks ETSI European Telecommunications Standards Institute ETSI Secretariat Postai address: F-O6921 Sophia Antipolis CEDEX - FRANCE Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE Internet: secretariat Qetsi
3、.fr - http:/www.etsi.fr - http:/www.etsi.org 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 Telecommunications S
4、tandards Institute 1998. O European Broadcasting Union 1998. Ali rights reserved. Page 2 ETS 300 81 4: March 1998 Whilst every care has been taken in the preparation and publication of this document, errors in content, typographical or otherwise, may occur. If you have comments concerning its accura
5、cy, please write to “ETSI Editing and Committee Support Dept.“ at the address shown on the title page. Page 3 ETS 300 814: March 1998 Contents Foreword . . 5 1 Scope . 7 2 References . “- 7 2.1 2.2 ITU publications . 8 ETSI and CENELEC publications 7 3 Definitions and abbreviations . 8 3.1 Definitio
6、ns ._ _. 8 3.2 Abbreviations . ._ 9 4 Baseline specification 10 4.1 4.2 4.3 4.4 4.5 MPEG Physical Interface (MPI) . 12 MPEG/ATM Adaptation (MAA) 16 Virtual Path Entity (VPE) 19 Virtual Path Multiplexing Entity (VPME) . 20 Sm Trail Termination (Sm-lT) 22 4.5.1 S3 Trail Termination (S3-TT) 23 4.5.2 S2
7、 Trail Termination (S2-TT) 25 4.5.3 S12 Trail Termination (Sl2-TT) 28 4.5.4 S11 Trail Termination (S1 1-TT) 31 Higher Order Assembler (HOA) . 33 S4 Trail Termination (S4-TT) 36 Transport Terminal Function (TTF) . 38 Equipment Management Function (EMF) 47 4.9.1 Configuration . 49 4.9.2 Fault (mainten
8、ance) management 51 4.9.3 Performance management 51 Synchronous Equipment Timing Source (SETS) . 55 Synchronous Equipment Timing Physical Interface (SETPI) . 59 4.6 4.7 4.8 4.9 4.10 4.1 1 Annex A (normative): Block diagram of the Network Adapter (NA) 60 Annex B (informative): Mechanism of the adapti
9、ve clock method 61 Annex C (informative): EnablingiDisabling the Header Error Control functions (HEC) . 62 Annex D (informative): Transmission capacity of the Network Adapter 63 Annex E (normative): Transport within Sub-STM-1 at 51 Mbit/s . 64 Annex F (informative): Definition of codes . 75 History
10、. 76 STD=ETSI ETS 300 8L4-ENGL 1998 3400855 0288974 328 Page 5 ETC 300 814: March 1998 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)
11、and the European Telecommunications Standards institute (ETSI). NOTE: The EBU/ETSI JTC was established in 1990 to co-ordinate the drafting of standards in the specific field of broadcasting and related fields. Since 1995 the JTC became a tripartite body by including in the Memorandum of Understandin
12、g also 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
13、. The EBU has active 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 Digital Video Broadcasting (DVB) Project Founded in September 199
14、3, the DVB Project is a market-led consortium of public and private sector organizations in the television industry. Its aim is to establish the framework for the introduction of MPEG2 based digital television services. Now comprising over 200 organizations from more than 25 countries around the wor
15、ld, DVB fosters market-led systems, which meet the real needs, and economic circumstances, of the consumer electronics and the broadcast industry. Transposition dates Date of adoption of this ETS: Date of latest announcement of this ETS (doa): 6 March 1998 30 June 1998 Date of latest publication of
16、new National Standard or endorsement of this ETS (dop/e): 31 December 1998 I I Date of withdrawal of any conflicting National Standard (dow): 31 December 1998 STD-ETSI ETS 300 814-ENGL 1998 3400855 0288975 2b4 Page 7 ETS 300 814: March 1998 1 Scope This European Telecommunication Standard (ETS) spec
17、ifies the transmission of MPEG2 Transport Streams (TS) between two DVB interfaces as defined in EN 50083-9 ll within SDH networks working at the ITU-T Recommendation G.707 15 hierarchical bit rate of 155 520 kbit/s or at a bit rate of 51 840 kbit/s. The use of any of these bit rates is optional, if
18、however one or more rates are selected the complete specification applies. The definition of the network aspects of the transmission of MPEG2-TSs is based to the maximum extent on existing international and European standards. The equipment considered in this ETC is the Network Adapter (NA) performi
19、ng the adaptation between MPEG2-TSs and the interfaces of SDH networks. 2 References This ETS incorporates by dated and undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dat
20、ed references, subsequent amendments to or revisions of any of these publications apply to this ETS only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. 2.1 ETSI and CENELEC publicatlons 31 41 51 ETS 300 147: “Transm
21、ission and Multiplexing (TM); Synchronous Digital Hierarchy (SDH)“; Multiplexing structure“. ETS 300 417-1-1 : “Transmission and Multiplexing (TM); Generic functional requirements for Synchronous Digital Hierarchy (SDH) equipment; Part 1 : Generic processes and performance“. ETS 300 41 7-2-1 : “Tran
22、smission and Multiplexing (TM); Generic requirements of transport functionality of equipment; Part 2-1 : Synchronous Digital Hierarchy (SDH) and Plesiochronous Digital Hierarchy (PDH) physical section layer functions“. ETS 300 41 7-3-1 : “Transmission and Multiplexing (TM); Generic requirements of t
23、ransport functionality of equipment; Part 3-1 : Synchronous Transport Module-N (STM-N) regenerator and multiplex section layer functions“. ETS 300 41 7-4-1 : “Transmission and Multiplexing (TM); Generic requirements of transport functionality of equipment; Part 4-1 : Synchronous Digital Hierarchy (S
24、DH) path layer functions“. ETS 300 417-6-1 : “Transmission and Multiplexing (TM); Generic requirements of transport functionality of equipment; Part 6-1 : Synchronization distribution layer functions“. EN 300 421 : “Digital Video Broadcasting (DVB); Framing structure, channel coding and modulation f
25、or 11/12 GHz satellite services“. EN 300 429: “Digital Video Broadcasting (DVB); Framing structure, channel coding and modulation for cable systems“. ETS 300 462-1 : “Transmission and Multiplexing (TM); Generic requirements for synchronization networks; Part 1 : Definitions and terminology for synch
26、ron izat io n networks“. ETS 300 462-5: “Transmission and Multiplexing (TM); Generic requirements for synchronization networks; Part 5: Timing characteristics of slave clocks suitable for operation in Synchronous Digital Hierarchy (SDH) equipment“. Previous page is blank STD.ETSI ETS 300 BL4-ENGL 19
27、98 3400855 0288976 1TO Page 8 ETS 300 814: March 1998 EN 50083-9: “Cabled distribution systems for television, sound and interactive multimedia signals; Part 9: Interfaces for CATVEMATV headends and similar professional equipment for DVBlMPEG2 transport streams“ (CENELEC). ETR 290: “Digital Video Br
28、oadcasting (DVB); Measurement guidelines for DVB systems“. ITU publications ITU-R Recommendation F.750-1: “Architectures and functional aspects of radio- relay systems for SDH-based networks“. ITU-T Recommendation G.703: “Physical/electrical characteristics of hierarchical digital interfaces“. ITU-T
29、 Recommendation G.707: “Network node interface for the synchronous digital hierarchy (SDH)“. ITU-T Recommendation G.783: “Characteristics of Synchronous Digital Hierarchy (SDH) equipment functional blocks“. ITU-T Recommendation G.825: “The control of jitter and wander within digital networks which a
30、re based on the synchronous digital hierarchy“. ITU-T Recommendation G.826: “Error performance parameters and objectives for international, constant bit rate digital paths at or above the primary rate“. ITU-T Recommendation H.222.0: “Information technology - Generic coding of moving pictures and ass
31、ociated audio information: Systems“. ITU-T Recommendation 1.361 : “B-ISDN ATM layer specification“. ITU-T Recommendation 1.363.1 : “B-ISDN ATM Adaptation Layer specification“. ITU-T Recommendation 1.432: “B-ISDN User-Network Interface - Physical layer specification“. ITU-T Recommendation 1.732: “Fun
32、ctional characteristics of ATM equipment“ ITU-T Recommendation J.82: “Transport of MPEGP constant bit rate television signals in B-ISDN“. ITU-T Recommendation M.2120: “PDH paths, section and transmission system and SDH path and multiplex section fault detection and localization procedures“. ITU-T Re
33、commendation Q.822: “Stage 1, stage 2 and stage 3 description for the Q3 interface - Performance management“. ITU-T Recommendation G.957: “Optical interfaces for equipments and systems relating to the synchronous digital hierarchy“. Definitions and abbreviations Definitions For the purposes of this
34、ETS, the following definitions apply: fixed stuff: Bytes that are used to fill up unused data positions. MPEGBTS packet: A data packet possessing a length of 188 bytes including 4 bytes of header information. The header contains MPEG related data. STD-ETSI ETS 300 8L4-ENGL 1998 D 3400855 0288977 037
35、 Page 9 ETS 300 814: March 1998 RS coded MPEGZ-TS packet: A data packet possessing a length of 204 bytes. Bytes 1 to 188 contain an MPEG2-TS packet. Bytes 189 to 204 contain the parity-check bytes for the error correction of the preceding bytes of this packet. These parity-check bytes are generated
36、using a shortened Reed-Solomon Code RS (204, 188). 3.2 Abbreviations For the purposes of this ETS, the following abbreviations apply: AAL APS AS1 ATM AU BER CATV CRC cs EMF FAS FEC HEC HOA HOVC LOF LOP LOS LOVC LSB MAA MMI MON MP MPEG MPI MSB MSOH NE PAP I PDU POH PT QOS RD I REI RFI RR RS RSOH SAR
37、SDH SETG SETPI SETS SLC S MATV SmTT SN SOH SPI SSI STM TCM ATM Adaptation Layer Automatic Protection Switching Asynchronous Serial Interface Asynchronous Transfer Mode Administrative Unit Bit Error Rate Community Antenna TeleVision Cyclic Redundancy Check Convergence Sublayer Equipment Management Fu
38、nction Frame Alignment Signal Forward Error Correction Header Error Control Higher Order Assembler Higher Order Virtual Container Loss Of Frame Loss Of Pointer Loss Of Signal Lower Order Virtual Container Least Significant Bit MPEG ATM Adaptation Man Machine Interface MONitored Management Points Mot
39、ion Picture Expert Group MPEG Physical interface Most Significant Bit Multiplex Section OverHead Network Element Path Access Point Identifier Protocol Data Unit Path OverHead Path Trace Quality Of Service Remote Defect Indication Remote Error Indication Remote Failure Indication Rad io-Relay Reed-So
40、lomon Regenerator Section OverHead Segmentation And Reassembly Sublayer Synchronous Digital Hierarchy Synchronous Equipment Timing Generator Synchronous Equipment Timing Physical Interface Synchronous Equipment Timing Source Signal Label Checking Satellite Master Antenna TeleVision Sm Trail Terminat
41、ion Sequence Number Section OverHead Synchronous Parallel Interface Synchronous Serial interface Synchronous Transport Module Tandem Connection Monitoring STD-ETSI ETS 300 8L4-ENGL 1998 m 3400855 0288978 T73 m Page 10 ETC 300 81 4: March 1998 TIM TS TTF TTI TUG UI UTC vc VP VPE VPME Trace Identifier
42、 Mismatch Transport Stream Transport Terminal Function Trail Trace Identifier Tributary Unit Group Unit Interval Universal Time Co-ordinated Virtual Container Virtual Path VP Entity VP Multiplexing Entity 4 Baseline specification The Network Adapter is an equipment which performs the adaptation of d
43、ata structured as an MPEG2-TS 19 to the characteristics of an SDH link. The solution selected for the transmission of MPEG2-TS packets, respectively RS coded MPEG2-TS packets, over SDH links is based on the use of ATM cells. Therefore, the adaptation of the transport of an MPEGFTS basically consists
44、 in: - - adaptation of MPEGBTS packets or RS coded MPEG2-TS packets to ATM cells; adaptation of ATM cells to SDH framing. The normative references applicable to the adaptation unless specifically mentioned are given here below: - the adaptation of MPEG2-TS packets into ATM cells using an AAL type 1
45、shall be performed as described in ITU-T Recommendation J.82 24. AAL type 1 is specified in ITU-T-Recommendation I .363.1 21, the ATM layer is specified in ITU-T Recommendation 1.361 20; - the adaptation of ATM cells into SDH framing shall be performed as described in ITU-T-Recommendation G.707 15.
46、There is no normative reference for the adaptation of RS coded MPEG2-TS packets to ATM cells. This adaptation shall be performed as described in ITU-T Recommendation J.82 24 for MPEG2-TS packets, with the only exception that the RS coded MPEG2-TS packets are not aligned with the structure of the AAL
47、1 interleaving matrix. The Network Adapter (NA) is described as a group of functional blocks. The partitioning into functional blocks is based on existing recommendations on SDH equipments (ITU-T Recommendation G. 783 16) and ATM equipments (ITU-T Recommendation 1.732 23). The equipment consists of
48、the following blocks (see also figure 1): MPEG Physical Interface; MPEG / ATM Adaptation; Virtual Path Entity; VP Multiplexing Entity; Sm Trail Termination; Higher Order Assembler; S4 Trail Termination; Transport Terminal Function; Synchronous Equipment Timing Source: Synchronous Equipment Timing Ph
49、ysical Interface; and Equipment Management Function. The present description is a functional description and does not imply any specific equipment implementation but it allows for the implementation of a separate transmitter and receiver as well as a combined transmitter / receiver. STD=ETSI ETS 300 814-ENGL 1998 3400855 0288979 90T Page 11 ETS 300 814: March 1998 A . . . . _ ._ _ _ . . . . . . ._. . . . . . . . . . . Figure 1 : Functional blocks of the Network Adapter NOTE: Most of ATM functional blocks contained in ITU-T Recommendation 1.732
