1、ETSI EN 300 737 V7.2.1 (2000-09) European Standard (Telecommunications series) Digital cellular telecommunications system (Phase 2+); In-band control of remote transcoders and rate adaptors for full rate traffic channels (GSM 08.60 version 7.2.1 Release 1998) (GSM 08.60 version 7.2.1 Release 1998) 2
2、 ETSI EN 300 737 V7.2.1 (2000-09) Reference REN/SMG-O20860Q7Rl Keywords Digital cellular telecommunications system, Global System for Mobile communications (GSM) ETSI 650 Route des Lucioles F-O6921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 O0 Fax: +33 4 93 65 47 16 Siret No 348 623 562 00
3、01 7 - NAF 742 C Association but non lucratif enregistre la Sous-prfecture de Grasse (06) No 7803/88 Important notice The pre Individual copies of the present document can be downloaded from: http:llwww.etsi.org ent document may be made available in more than one electronic version or in print. In e
4、 of existing or perceived difference in contents between such versions, the reference version is the Portable 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 pres
5、ent document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at http:llwww.etsi.orcg/lb/status/ If you find errors in the present document, send your comment to: editor et.si.fr Copyrigh
6、t 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 Standards Institute 2000. All rights reserved. ETSI (GSM 08.60 version 7.2.1 Release 1998) 3 ETSI EN 300
7、 737 V7.2.1 (2000-09) Contents Intellectual Property Rights 5 Foreword . 5 1 Scope 6 1.1 References 6 1.2 Abbreviations . 8 2 General Approach . 8 3 Frame Structure 11 3.1 Frames for Speech Services 11 3.1.1 Frames for Full Rate and Enhanced Full Rate Speech 11 3.1.2 Frames for Adaptive Multi-Rate S
8、peech 12 3.2 O Essential, or potentially Essential, IPRs notifed to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (-). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried o
9、ut by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR O00 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This European Standard (Telecommunications series) has been produced by E
10、TSI Technical Committee Special Mobile Group (SMG). The present document specifies the inband control of remote transcoders and rate adaptors for Full Rate speech, Enhanced Full Rate speech, Adaptive Multi-Rate speech and full rate data within the Digital cellular telecommunications system (Phase 2+
11、). The specification from which the present document has been derived was originally based on CEPT documentation, hence the presentation of the present document may not be entirely in accordance with the ETSWNE Rules. The contents of the present document is subject to continuing work within SMG and
12、may change following formal SMG approval. Should SMG modify the contents of the present document it will be re-released with an identifying change of release date and an increase in version number as follows: Version 7.x.y where: 7 indicates Release 1998 of GSM Phase 2+. x the second digit is increm
13、ented for all changes of substance, i.e. technical enhancements, corrections, updates, etc. y the third digit is incremented when editorial only changes have been incorporated in the specification. National transposition dates Date of adoption of this EN: Date of latest announcement of this EN (doa)
14、: Date of latest publication of new National Standard or endorsement of this EN (dop/e): Date of withdrawal of any conflicting National Standard (dow): 12 May 2000 3 1 August 2000 29 February 200 1 29 February 200 1 ETSI (GSM 08.60 version 7.2.1 Release 1998) 6 ETSI EN 300 737 V7.2.1 (2000-09) 1 Sco
15、pe When 64 kbitls traffic channels are used on the Abis interface, the speech shall be coded according to CCITT Recommendation G.711 and the data rate adaptation shall be as specified in GSM 04.21 and GSM 08.20. In the case where 16 kbitls traffic channels are used for full rate speech, enhanced ful
16、l rate speech, Adaptive Multi-Rate speech or full rate data service, then the present document shall apply for frame structure and for control of remote transcoders and additional rate adaptors. For Adaptive Multi-Rate speech the present document specifies the 16 kBitls submultiplexing, both for the
17、 full and the half rate traffic channels (TCH/AFS and TCH/AHS). The specification for 8 kBitls submultiplexing is given in GSM 08.61, both for the full and the half rate traffic channels (TCH/AFS and TCH/AHS). The use and general aspects of the Abis interface are given in GSM 08.51. NOTE: The presen
18、t document should be considered together with the GSM 06 series of specifications, GSM 04.21 (Rate Adaptation on the MS-BSS Interface) and GSM 08.20 (Rate Adaptation on the BS/MSC Interface). 1 .I Ref e rences The following documents contain provisions which, through reference in this text, constitu
19、te provisions of the present document. References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific. For a specific reference, subsequent revisions do not apply. For a non-specific reference, the latest version applies. A non-specific refer
20、ence to an ETS shall also be taken to refer to later versions published as an EN with the same number. For this Release 1998 document, references to GSM documents are for Release 1998 versions (version 7.x.y). il GSM O 1.04: “Digital cellular telecommunications system (Phase 2+); Abbreviations and a
21、cronyms“. GSM 04.06: “Digital cellular telecommunications system (Phase 2+); Mobile Station - Base Station System (MS - BSS) interface; Data Link (DL) layer specification“. GSM 04.21: “Digital cellular telecommunications system (Phase 2+); Rate adaption on the Mobile Station - Base Station System (M
22、S - BSS) interface“. GSM 06.0 1: “Digital cellular telecommunications system (Phase 2+); Full rate speech; Processing functions“. Pl 31 41 Pl GSM 06.10: “Digital cellular telecommunications system (Phase 2+); Full rate speech; Transcoding“ . GSM 06.11: “Digital cellular telecommunications system (Ph
23、ase 2+); Full rate speech; Substitution and muting of lost frames for full rate speech channels“. GSM 06.12: “Digital cellular telecommunications system (Phase 2+); Full rate speech; Comfort noise aspect for full rate speech traffic channels“. GSM 06.3 1: “Digital cellular telecommunications system
24、(Phase 2+); Full rate speech; Discontinuous Transmission (DTX) for full rate speech traffic channels“. GSM 06.32: “Digital cellular telecommunications system (Phase 2+); Voice Activity Detector (VAD)“. 61 VI SI PI ETSI (GSM 08.60 version 7.2.1 Release 1998) 7 ETSI EN 300 737 V7.2.1 (2000-09) GSM 08.
25、20: “Digital cellular telecommunications system (Phase 2+); Rate adaption on the Base Station System - Mobile-services Switching Centre (BSS - MSC) interface“. GSM 08.5 1: “Digital cellular telecommunications system (Phase 2+); Base Station Controller - Base Transceiver Station (BSC - BTS) interface
26、; General aspects“. GSM 08.54: “Digital cellular telecommunications system (Phase 2+); Base Station Controller - Base Transceiver Station (BSC - BTS) interface; Layer 1 structure of physical circuits“. GSM 08.58: “Digital cellular telecommunications system (Phase 2+); Base Station Controller - Base
27、Transceiver Station (BSC - BTS) interface; Layer 3 specification“. GSM 12.21: “Digital cellular telecommunications system (Phase 2+); Network Management (NM) procedures and message on the A-bis interface“. CCITT Recommendation G.7 11: “Pulse code modulation (PCM) of voice frequencies“. CCITT Recomme
28、ndation 1.460: “Multiplexing, rate adaption and support of existing interfaces“. CCITT Recommendation V. 1 10: “Support of data terminal equipments (DTEs) with V-Series interfaces by an integrated services digital network“. GSM 06.5 1: “Digital cellular telecommunications system (Phase 2+); Enhanced
29、 Full rate speech processing functions“. GSM 06.60: “Digital cellular telecommunications system (Phase 2+); Enhanced Full rate speech transcoding“ . GSM 06.6 1: “Digital cellular telecommunications system (Phase 2+); Substitution and muting of lost frames for Enhanced Full rate speech channels“. GSM
30、 06.62: “Digital cellular telecommunications system (Phase 2+); Comfort noise aspect for Enhanced Full rate speech traffic channels“. GSM 06.8 1: “Digital cellular telecommunications system (Phase 2+); Discontinuous Transmission (DTX) for Enhanced Full rate speech traffic channel“. GSM 06.82: “Digit
31、al cellular telecommunications system (Phase 2+); Voice Activity Detection (VAD)“. GSM 06.7 1: “Digital cellular telecommunications system; Adaptive Multi-Rate speech processing functions, General Description“. GSM 06.90: “Digital cellular telecommunications system; Adaptive Multi-Rate speech transc
32、oding“ . GSM 06.91: “Digital cellular telecommunications system; Substitution and muting of lost frames for Adaptive Multi-Rate speech traffic channels“. GSM 06.92: “Digital cellular telecommunications system; Comfort noise aspect for Adaptive Multi-Rate speech traffic channels“. GSM 06.93: “Digital
33、 cellular telecommunications system; Discontinuous Transmission (DTX) for Adaptive Multi-Rate speech traffic channels“. GSM 06.94: “Digital cellular telecommunications system; Voice Activity Detection (VAD) for Adaptive Multi-Rate speech traffic channels“. GSM 05.09: “Digital cellular telecommunicat
34、ions system; Link Adaptation“. GSM 08.6 1: Digital cellular telecommunications system; Inband control of remote transcoders and rate adaptors for half rate traffic channels“. GSM 08.62: “Digital cellular telecommunications system; Inband Tandem Free Operation (TFO) of Speech Codecs“. ETSI (GSM 08.60
35、 version 7.2.1 Release 1998) 8 ETSI EN 300 737 V7.2.1 (2000-09) 1.2 Abbreviations Abbreviations used in the present document are listed in GSM 01.04. Additionally: AMR CMC CMI CMR Onset PAB PAC RATSCCH RIF TAC TAE TFO TFOE UFE Adaptive Multi-Rate CodecMode-Command CodecMode-Indication CodecMode-Requ
36、est Speech Onset Frame Classification Phase Alignment Bit Phase Alignment Command Robust AMR Traffic Synchronised Control CHannel Request or Indication Flag Time Alignment Command Time Alignment Extension Tandem Free Operation TFO Enable Uplink Frame Error 2 General Approach When the transcoders/rat
37、e adaptors are positioned remote to the BTS, the information between the Channel Codec Unit (CCU) and the remote TranscodedRate Adaptor Unit (TRAU) is transferred in frames with a fixed length of 320 bits (20 ms). In the present document, these frames are denoted “TRAU frames“. Within these frames,
38、both the speech/data and the TRAU associated control signals are transferred. The Abis interface should be the same if the transcoder is positioned i) at the MSC site of the BSS or if it is positioned 2) at the BSC site of the BSS. In case l), the BSC should be considered as transparent for 16 kbitl
39、s channels. In case of 4,s and 9,6 kbitJs channel coding when data is adapted to the 320 bit frames, a conversion function is required in addition to the conversionhate adaption specified in GSM 08.20. This function constitutes the RAA. In case of 14,5 kbitls channel coding, no RAA rate adaption is
40、required because V.110 framing is not used. The TRAU is considered a part of the BSC, and the signalling between the BSC and the TRAU (e.g. detection of call release, handover and transfer of O “Remote Transcoder and Rate Adaptor Control Function“ (RTRACF); “Remote Speech Handler Function“ (RSHF); T
41、he RAA function in case of 4,s and 9,6 kbitJs channel coding; The RAA function in case of 14,5 kbitls channel coding; - The transcoder function. - Optionally the TFO functions (see GSM 08.62). ETSI (GSM 08.60 version 7.2.1 Release 1998) 9 ETSI EN 300 737 V7.2.1 (2000-09) The functions inside the CCU
42、 are: - - “Speech Handler Function“ (SHF); - - - - The channel codec function; - “Transcoder and Rate Adaptor Control Function“ (TRACF); The RAA function in case of 4,s kbitJs and 9,6 kbitJs channel coding; The RAlIRA1 function in case of 4,s kbitls and 9,6 kbids channel coding; The RAlIRAA function
43、 in case of 14,5 kbitJs channel coding; If AMR is supported, the Link Adaptation (see GSM 05.09). The present document will not describe the procedures inside the TRAU and the CCU. The layout in figure 2.1 is only intended as a reference model. ETSI (GSM 08.60 version 7.2.1 Release 1998) Trans- code
44、r Function (Note) BSC Remote Speech Handler Function 10 BTS ETSI EN 300 737 V7.2.1 (2000-09) Speech 64 +, kbit/s Data IANSCODEWRA UNIT) j, RA2 SpeechIdata Control Abis 16 Kbit/s 320 bit/ 20 mS CCU (CHANNEL CODEC UNIT) Speech Handler Function - Speech I Trans- coder and Function 1 3 Control signais C
45、hannel - :$:on RA1 Data * Radio frames I NOTE 1 : This recommendation assumes the DTX handler function to be a part of the Transcoder Function. NOTE 2: This figure applies only for 4,8 kbits and 9,6 kbits channel coding. Figure 2.1 : Functional entities for handling of remote control of remote trans
46、coders and rate adaptors ETSI (GSM 08.60 version 7.2.1 Release 1998) 11 ETSI EN 300 737 V7.2.1 (2000-09) 3 3.1 3.1.1 Frame Structure Frames for Speech Services Frames for Full Rate and Enhanced Full Rate Speech Octet no. O 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29
47、 30 31 32 33 34 35 36 37 38 39 Bit number 1 2 3 4 5 6 7 8 O O 1 C8 1 D8 1 D23 1 D38 1 D53 1 D68 1 D83 1 D98 1 D113 1 D128 1 D143 1 D158 1 D173 1 D188 1 D203 1 D218 1 D233 1 D248 1 O O c1 c9 D1 D9 D16 D24 D3 1 D39 D46 D54 D61 D69 D76 D84 D91 D99 D106 D114 D121 D129 D136 D144 D151 D159 D166 D174 D181
48、D189 D196 D204 D211 D219 D226 D234 D241 D249 D256 O O c2 c1 o D2 D1 O D17 D25 D32 D40 D47 D55 D62 D70 D77 D85 D92 D1 O0 D107 D115 D122 D130 D137 D145 D152 D160 D167 D175 D182 D190 D197 D205 D212 D220 D227 D235 D242 D250 D257 O O c3 c11 D3 D11 D18 D26 D33 D41 D48 D56 D63 D7 1 D78 D86 D93 D1 O1 D108 D
49、116 D123 D131 D138 D146 D153 D161 D168 D176 D183 D191 D198 D206 D213 D221 D228 D236 D243 D251 D258 c2 1 O O c4 c12 D4 D12 D19 D27 D34 D42 D49 D57 D64 D72 D79 D87 D94 D102 D1 O9 D117 D124 D132 D139 D147 D154 D162 D169 D177 D184 D192 D199 D207 D214 D222 D229 D237 D244 D252 D259 T1 O O c5 C13 D5 D13 D20 D28 D35 D43 D50 D58 D65 D73 D80 D88 D95 D103 D110 D118 D125 D133 D140 D148 D155 D163 D170 D178 D185 D193 D200 D208 D215 D223 D230 D238 D245 D253 D260 O O C6 C14 D6 D14 D2 1 D29 D36 D44 D5 1 D59 D66 D74 D81 D89 D96 D104 D111 D119 D126 D134 D141 D149 D156 D164 D171 D179 D18
