1、 ETSI TS 148 051 V14.0.0 (2017-04) Digital cellular telecommunications system (Phase 2+) (GSM); Base Station Controller - Base Transceiver Station (BSC - BTS) interface; General aspects (3GPP TS 48.051 version 14.0.0 Release 14) TECHNICAL SPECIFICATION GLOBAL SYSTEM FOR MOBILE COMMUNICATIONSRETSI ET
2、SI TS 148 051 V14.0.0 (2017-04)13GPP TS 48.051 version 14.0.0 Release 14Reference RTS/TSGR-0648051ve00 Keywords GSM 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 en
3、registre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice The present document can be downloaded from: http:/www.etsi.org/standards-search The present document may be made available in electronic versions and/or in print. The content of any electronic and/or print versions of the present
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6、resent document, please send your comment to one of the following services: https:/portal.etsi.org/People/CommiteeSupportStaff.aspx Copyright Notification No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as autho
7、rized by written permission of ETSI. The content of the PDF version shall not be modified without the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2017. All rights reserved. DECTTM, PLU
8、GTESTSTM, UMTSTMand the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM and LTE are Trade Marks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM and the GSM logo are Trade Marks registered and owned by the GSM Associat
9、ion. ETSI ETSI TS 148 051 V14.0.0 (2017-04)23GPP TS 48.051 version 14.0.0 Release 14Intellectual 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
10、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 server (https:/ipr.
11、etsi.org/). 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, essential to
12、 the present document. Foreword This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP). The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identities or GSM identities. These should be interpreted as
13、being references to the corresponding ETSI deliverables. The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under http:/webapp.etsi.org/key/queryform.asp. Modal verbs terminology In the present document “shall“, “shall not“, “should“, “should not“, “may“, “need not“, “will“
14、, “will not“, “can“ and “cannot“ are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TS 148 051 V14.0.0 (2017-04)33GPP TS
15、 48.051 version 14.0.0 Release 14Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 4g31 Scope 5g32 References 5g33 Abbreviations . 6g34 Interface capabilities. 6g35 Interface specification objectives . 6g36 Interface characteristics 7g37 Other technical spe
16、cifications on the BSC-BTS interface 7g37.1 3GPP TS 48.052 BSC-BTS Interface Principles 7g37.2 3GPP TS 48.054 BSC-BTS Layer 1 Specification . 7g37.3 3GPP TS 48.056 BSC-BTS Layer 2 Specification . 7g37.4 3GPP TS 48.058 BSC-BTS Layer 3 Specification . 7g37.5 3GPP TS 12.21 BSC-BTS Operation/Maintenance
17、 Signalling 8g37.6 3GPP TS 48.060 Inband Control of Remote Transcoders and Rate Adaptors . 8g37.7 3GPP TS 48.061 Inband Control of Remote Transcoders and Rate Adaptors for Half Rate Traffic Channels . 8g3Annex A (informative): Change History 9g3History 10g3ETSI ETSI TS 148 051 V14.0.0 (2017-04)43GPP
18、 TS 48.051 version 14.0.0 Release 14Foreword This Technical Specification has been produced by the 3rd Generation Partnership Project (3GPP). The contents of the present document are subject to continuing work within the TSG and may change following formal TSG approval. Should the TSG modify the con
19、tents of the present document, it will be re-released by the TSG with an identifying change of release date and an increase in version number as follows: Version x.y.z where: x the first digit: 1 presented to TSG for information; 2 presented to TSG for approval; 3 or greater indicates TSG approved d
20、ocument under change control. y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections, updates, etc. z the third digit is incremented when editorial only changes have been incorporated in the document. ETSI ETSI TS 148 051 V14.0.0 (2017-04)53GPP TS 48
21、.051 version 14.0.0 Release 141 Scope The present document is an introduction to the 48.5xx - 48.6xx series of 3GPP Technical Specifications and deals with the definition of the Base Station Controller (BSC) to Base Transceiver Station (BTS) interface defined inside the Base Station System (BSS) for
22、 the GSM system. These Technical Specifications define the basic interface with some identified options requiring further elaboration. The BSC-BTS interface is mandatory within GSM only if the BSC and the BTS are not colocated. 2 References The following documents contain provisions which, through r
23、eference in this text, constitute 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 versio
24、n applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document. 1 3GPP TR 21.905: “Vocabulary for 3GPP Specifications“. 2 3GPP TS 43.050: “Transmission
25、planning aspects of the speech service in the GSM Public Land Mobile Network (PLMN) system“. 3 3GPP TS 48.008: “Mobile Switching Centre - Base Station System (MSC-BSS) interface; Layer 3 specification“. 4 Void. 5 3GPP TS 48.052: “Base Station Controller - Base Transceiver Station (BSC - BTS) interfa
26、ce; Interface principles“. 6 3GPP TS 48.054: “Base Station Controller - Base Transceiver Station (BSC - BTS) interface Layer 1 structure of physical circuits“. 7 3GPP TS 48.056: “Base Station Controller - Base Transceiver Station (BSC - BTS) interface; Layer 2 specification“. 8 3GPP TS 48.058: “Base
27、 Station Controller - Base Transceiver Station (BSC - BTS) interface; Layer 3 specification“. 9 3GPP TS 48.060: “Inband control of remote transcoders and rate adaptors for full rate traffic channels“. 10 3GPP TS 48.061: “Inband control of remote transcoders and rate adaptors for half rate traffic ch
28、annels“. 11 Void. 12 Void. 13 Void. 14 Void. 15 Void. 16 Void. 17 Void. ETSI ETSI TS 148 051 V14.0.0 (2017-04)63GPP TS 48.051 version 14.0.0 Release 1418 Void. 19 Void. 20 Void. 21 Void. 22 Void. 23 Void. 24 3GPP TS 12.21: “Network Management (NM) procedures and messages on the A-bis interface“. 25
29、Void. 26 ITU-T Recommendation Q.920: “ISDN user-network interface data link layer - General aspects“. 27 ITU-T Recommendation Q.921: “ISDN user-network interface - Data link layer specification“. 3 Abbreviations For the purposes of the present document, the abbreviations given in 3GPP TR 21.905 appl
30、y. 4 Interface capabilities The BSC-BTS interface shall be capable of supporting all the services offered to the GSM users and subscribers. In addition it shall also allow control of the radio equipment and radio frequency allocation in the BTS. 5 Interface specification objectives The BSC to BTS in
31、terface specifications should allow the following: (I) Connection of various manufacturers BTS/TRX to the same BSC, according to the location of the transcoder. (II) The use of several manufacturers BSC to the same type of BTS/TRX, according to the location of the transcoder. (III) The use of the sa
32、me BTS/TRX in any PLMN, according to the location of the transcoder. (IV) The use of the same BSC in any PLMN. (V) Separate evolution of BSC and BTS/TRX technology. (VI) Separate evolution of O b) channel structures; c) signalling transfer procedures; d) configuration and control procedures; e) oper
33、ation and maintenance information support. The definition of the BSC to BTS/TRX interface follows a layered approach similar to the ISDN. Layer 3 is for the most part based on Technical Specification 3GPP TS 48.008 with additional procedures for control of radio resources. Layer 2 is based on the LA
34、PD protocol. Layer 1 is either digital (at a rate 2 048 kbit/s with a frame structure of 32 x 64 kbit/s time slots or at a rate of 64 kbit/s) or analogue with the data being passed by the use of modems (this latter case is a national option). In the case that the transcoder is positioned outside the
35、 BTS, the overall one way propagation delay between the Point of Interconnection to PSTN/ISDN and the MS is limited to 1,5 ms (approximately 300 km). With the transcoder in the BTS, the limit is 6,5 ms (approximately 1 300 km). These limits may be subject to increase resulting from savings made in t
36、he overall network. See also Technical Specification 3GPP TS 43.050. 7 Other technical specifications on the BSC-BTS interface The full structure of the Technical Specifications specifying the BSC to BTS interface are as follows: 7.1 3GPP TS 48.052 BSC-BTS Interface Principles 3GPP TS 48.052 gives t
37、he principle basis for the rest of the specifications specifying the interface between the base station controller and the base transceiver station. It gives the functional split between these two entities. 7.2 3GPP TS 48.054 BSC-BTS Layer 1 Specification 3GPP TS 48.054 defines the structure of the
38、physical layer at the BSC - BTS interface. The physical interface is either chosen as 2 048 kbit/s or as 64 kbit/s, both according to standard ITU-T recommendations. Depending on location of transcoders, speech is standard A-law or it is 16 kbit/s remote control protocol multiplexed or rate adapted
39、to 64 kbit/s in the same way as data. 7.3 3GPP TS 48.056 BSC-BTS Layer 2 Specification At layer 2 the signalling information is passed by a standard LAPD protocol mechanism in accordance with the ITU-T Recommendations Q.920 and Q.921. 7.4 3GPP TS 48.058 BSC-BTS Layer 3 Specification 3GPP TS 48.058 s
40、pecifies the layer 3 procedures used on the BSC-BTS interface for control of the GSM services. The functional split between BSC and BTS is defined in Technical Specification 3GPP TS 48.052. ETSI ETSI TS 148 051 V14.0.0 (2017-04)83GPP TS 48.051 version 14.0.0 Release 147.5 3GPP TS 12.21 BSC-BTS Opera
41、tion/Maintenance Signalling 3GPP TS 12.21 defines the transport mechanism for O&M messages over the Abis interface. O&M procedures and messages are defined in 3GPP TS 12 series. 7.6 3GPP TS 48.060 Inband Control of Remote Transcoders and Rate Adaptors The transcoder is a part of the BSS and may opti
42、onally be located outside the BTS (e.g. at MSC-site or at BSC-site) in order to make it possible to multiplex speech and data channels on the links within the BSS and on the BSC-BTS link. 3GPP TS 48.060 describes the protocol which carries the full rate speech and data frames between the transcoder
43、and the radio link codec across a 16 kbit/sec interface. Both full rate speech and full rate data services are covered. It also defines the signals needed for remote controlling the timing of the transcoder in accordance to the transmission time at the radio link. It also addresses the signals for v
44、oice activity and comfort noise. It interfaces the 06- series to the 05-series. 7.7 3GPP TS 48.061 Inband Control of Remote Transcoders and Rate Adaptors for Half Rate Traffic Channels 3GPP TS 48.061 describes the protocol which carries the half rate speech and data frames between the transcoder and
45、 the radio link codec across a 16 kbit/s or an 8 kbit/s interface. Both half rate speech and half rate data services are covered. It also defines the signals needed for remote controlling the timing of the transcoder in accordance to the transmission time at the radio link. It also addresses the sig
46、nals for voice activity and comfort noise. ETSI ETSI TS 148 051 V14.0.0 (2017-04)93GPP TS 48.051 version 14.0.0 Release 14Annex A (informative): Change History TSG # TSG Doc. CR Rev Subject/Comment New January 2016 - - - Rel-13 version created based on v12.0.0 13.0.0 Change history Date Meeting TDoc CR Rev Cat Subject/Comment New version 2017-03 75 Version for Release 14 (frozen at TSG-75) 14.0.0 ETSI ETSI TS 148 051 V14.0.0 (2017-04)103GPP TS 48.051 version 14.0.0 Release 14History Document history V14.0.0 April 2017 Publication
