ETSI TS 101 642-2002 Digital Cellular Telecommunications System (Phase 2+) Base Station System - Mobile-Services Switching Centre (BSS - MSC) Interface Interface Principles (3GPP T.pdf

1、ETSI TS 1 O1 642 V8.0.1 (2002-05) Technical Specificafion Digital cellular telecommunications system (Phase 2+); Base Station System - Mobile Services Switching Centre (BSS-MSC) Interface - Interface Principles (3GPP TS 08.02 version 8.0.1 Release 1999) 3GPP TS 08.02 version 8.0.1 Release 1999 1 ETS

2、I TS 101 642 V8.0.1 (2002-05) Reference RTS/TSGG-020802801 Keywords 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 00017 - NAF 742 C Association but non lucratif enregistre la Sous-prfecture de Grasse (06) N

3、o 7803/88 Important notice Individual copies of the present document can be downloaded from: http:lwmv.etsi .arq 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 referenc

4、e 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 present document should be aware that the document may be subject to revision or change

5、of status. Information on the current status of this and other ETSI documents is available at ha p:/pa rta I. etsi I a rgltbistat uslstatus .as p If you find errors in the present document, send your comment to: Cori vriaht Notifica tion No part may be reproduced except as authorized by written perm

6、ission. The copyright and the foregoing restriction extend to reproduction in all media. O European Telecommunications Standards Institute 2002. All rights reserved. DECTTM, PLUGTESTSTMand UMTSTMare Trade Marks of ETSI registered for the benefit of its Members. TIPHONTM and the TIPHON logo are Trade

7、 Marks currently being registered by ETSI 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. ETSI 3GPP TS 08.02 version 8.0.1 Release 1999 2 ETSI TS 101 642 V8.0.1 (2002-05) Intellectual Property Rights IP

8、Rs 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 members and non-members, and can be found in ETSI SR O00 314: “Intellectual Property Rights (7PRs); Essential, orpo

9、tentially Essential, IPRs notlJied to ETSI in respect ofETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (5). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be

10、 given as to the existence of other IPRs not referenced in ETSI SR O00 3 14 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP).

11、The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identities or GSM identities. These should be interpreted as being references to the corresponding ETSI deliverables. The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found u

12、nder www.etsi.ornkey . ETSI 3GPP TS 08.02 version 8.0.1 Release 1999 3 ETSI TS 101 642 V8.0.1 (2002-05) Contents . Intellectual Property Rights .2 Foreword . 2 Foreword . 5 1 General . 6 1.1 Scope . . 6 1.2 References . . 6 1.3 Definitions and abbreviations . . . 7 Functional division between Base S

13、tation System (BSS) and MSC 8 2 2.1 2.1.1 2.1.2 2.2 2.2.1 2.2.2 2.2.2.1 2.2.2.2 2.2.2.3 2.2.2.4 2.2.2.5 2.2.2.6 2.2.3 2.2.3.1 2.2.4 2.2.4.1 2.2.4.2 2.2.4.3 2.2.4.4 2.3 2.4 2.5 2.6 2.7 2.7.1 2.7.2 2.7.3 2.8 2.8.1 2.8.2 2.8.3 2.8.3.1 2.8.3.2 2.8.3.3 2.8.3.4 2.9 2.10 2.11 2.11.1 2.11.2 2.11.3 2.11.4 Te

14、rrestrial channel management . Terrestrial channel allocation . . Blocking of terrestrial channels . Radio channel management . . Channel configuration management . Radio TCH management . . Radio channel allocation. . . TCH radio link supervision Frequency hopping management . . Idle channel observa

15、tion . TCH power control . . TCH channel release . . BCCH CCCH management . . Scheduling of BCCH . 10 DCCH Management . . DCCH link supervision . . DCCH channel release . DCCH power control . Radio Channel Allocation. . Resource indication . . . . 10 . 10 . 10 . 10 . 10 . 10 . 10 . 10 . 10 Channel c

16、oding decoding 10 Transcodinghate adaptation 11 Intenvorking function (data 11 Measurement information . 11 Measurement informatio 11 Uplink measurement information Traffic information 11 Handover . 11 Internal handover within one cell External handover 11 11 11 11 Recognition that a handover is req

17、uired for a radio reas Recognition that a handover is required for a traffic reas Decision of Target Cell . . Call control . . . User identity confidentiality . Signalling information confidentiality Authentication of users . 3 4 5 Transcoderhate adapter integration . .13 Classes of signalling messa

18、ges . 13 Multiplexing of common and dedicated control channels 13 ETSI 3GPP TS 08.02 version 8.0.1 Release 1999 4 ETSI TS 101 642 V8.0.1 (2002-05) 6 Support of services and features other than speech 14 6.1 Data services 14 6.2 Supplementary services 14 7 Interface structures . 14 8 Operation and ma

19、intenance 14 Annex A (informative): Remote Mobile Switching Unit (RMSU) . 16 A . 1 16 A.2 16 A.3 General requirements . 16 Annex B (informative): Change History . 17 History 18 ETSI 3GPP TS 08.02 version 8.0.1 Release 1999 5 ETSI TS 101 642 V8.0.1 (2002-05) Foreword This Technical Specification has

20、been produced by the 3d Generation Partnership Project (3GPP). The present document specifies or references procedures used on the Base Station System (BSS) to Serving GPRS Support Node (SGSN) interface for control of GSM packet data services within the digital cellular telecommunications system (Ph

21、ase 2+). The contents of the present document are subject to continuing work within the TSG and may change following formal TSG approval. Should the TSG modiSl the contents of the present document, it will be re-released by the TSG with an identiSling change of release date and an increase in versio

22、n 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 document under change control. y the second digit is incremented for all changes of substance, i.e. technical enhancements, correction

23、s, updates, etc. z the third digit is incremented when editorial only changes have been incorporated in the document. ETSI 3GPP TS 08.02 version 8.0.1 Release 1999 6 ETSI TS 101 642 V8.0.1 (2002-05) 1 General 1 .I Scope The present document gives the principles on which the detailed interface specif

24、ications in the rest of the 3GPP TS 08.OX series of Technical Specifications are based. The set of fixed equipment accessed from the MSC through one particular instance of the interface will be later referred to as a Base Station System (BSS). A BSS ensures the coverage of n cells, where n can be 1

25、or more. The function of a BSS may be further subdivided into a control function, performed by one Base Station Controller (BSC) and a transceiving function, performed by “n“ Base Transceiver Station equipments (BTS), one for each cell. However, the study of such a split is outside the scope of the

26、08.0 series of Technical Specifications, where the BSS will be considered as a whole. The BSS-MSC interface defined in the 3GPP TS O8 series of Technical Specifications is designed to support a wide range of possible architectures on both sides. Characteristics like the physical location of the tran

27、scoders/rate adaptation inside the BSS (either integrated into the transceivers or very near to the MSC) or the use of traffic or signalling concentration at either side are left to the operators choice. Annex A to the present document contains guidance information concerning the use of remote mobil

28、e switching units, which for the purposes of the present document are considered as part of the MSC. Direct connection between two BSSs is not supported by this interface. This interface is based on the use of 1 or more 2 048 kbit/s digital transmission system interfaces. Each 2 048 kbit/s interface

29、 provides 3 1 *64 kbit/s channels which can be used for traffic or signalling as the operator requires. The signalling is layered, terminology similar to that in the OS1 reference model is used in this series, however the layers referred to are not identical to the equivalently named layer in the OS

30、1 model. This interface is defined at the boundary of the MSC and has a per channel bit rate of 64 kbit/s, but the net radio path traffic channel is at a rate of less than 16 kbit/s. A transcoder or rate adapter function is thus needed for the rate conversion. The interface is designed such that the

31、 transcoding or rate adaptation function may be geographically situated at either the MSC site or the BSS site, however the transcoder is considered to be part of the BSS. The interface has been designed around the aims of 3GPP TS 08.01 allowing each component and the system as a whole to evolve. 1.

32、2 References The following documents contain provisions which, through reference 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

33、 revisions do not apply. For a non-specific reference, the latest version 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 theyresent document. il 21 3GPP TS O 1

34、.04: “Abbreviations and acronyms“. 3GPP TS 03.09: “Handover procedures“. 31 41 51 3GPP TS 03.10: “GSM Public Land Mobile Network (PLMN) connection types“ 3GPP TS 03.20: “Security related network functions“. 3GPP TS 04.08: “Mobile radio interface layer 3 specification“. ETSI 3GPP TS 08.02 version 8.0

35、.1 Release 1999 7 ETSI TS 101 642 V8.0.1 (2002-05) 61 3GPP TS 08.01: “Base Station System - Mobile services Switching Centre (BSS - MSC) interface; General aspects“. 71 Void. SI 3GPP TS 08.06: “Signalling transport mechanism specification for the Base Station System - Mobile-services Switching Centr

36、e (BSS - MSC) interface“. 91 3GPP TS 08.08: “Mobile Switching Centre - Base Station System (MSC - BSS) interface; Layer 3 specification“. lo1 Void. 111 Void. 121 Void. i31 Void. i41 Void. i51 Void. 161 Void. i71 Void. I81 3GPP TS 12.01: “Common aspects of GSM Network Management (NM)“. 1.3 Definition

37、s and abbreviations Abbreviations used in the present document are listed in 3GPP TS 01.04. ETSI 3GPP TS 08.02 version 8.0.1 Release 1999 8 ETSI TS 101 642 V8.0.1 (2002-05) 2 Functional division between Base Station System (BSS) and MSC Table 2.1: Functional split ItemlTas k -errestria1 Channel Mana

38、gement channel allocation blocking indication ?adio channel management Radio channel configuration management frequency hopping management idle channel observation power control TCH management channel allocation (choice) link supervision channel release BCCH/CCCH management scheduling of messages DC

39、CH management link supervision channel release DCCH allocation ?adio resource indication ,eport status of idle channels lhannel coding decoding on the basis of call type -ranscoding/rate adaptation iterworking Function (data calls) Aeasurements reported from MS uplink traffic iandover internal (with

40、in one ceii)if provided internal (between cells) if provided external recognition radio reason external recognition traffic reason decision execution Aobility Management a ut he nticati o n location updating DRX paging (scheduling) paging lall control Jser data encryption 3gnalling element encryptio

41、n BSS X X X X X X X X X X X X X X X X X X X X X X X X X X MSC,VLR,HLR X X X (Invoked by MSC) X (Invoked by MSC MSC defines call type X X MSC informed MSC informed X X X X X X X Key and permitted algorithms from MSC Key and permitted ETSI 3GPP TS 08.02 version 8.0.1 Release 1999 9 ETSI TS 101 642 V8.

42、0.1 (2002-05) I algorithms from MSC I 2.1 Terrestrial channel management 2.1.1 Terrestrial channel allocation Terrestrial channel allocation will be handled in the following manner. The link between the MSC and the BSS will be considered by the BSS and the MSC as a route on “n“ circuits. Within this

43、 route, certain of the circuits may not be able to support all types of traffic (e.g., data calls or half rate connections). This can be managed, according to the configuration, either by the MSC or by the BSS for a given route. The entity in charge of circuit allocation chooses the terrestrial circ

44、uit, whilst ensuring that the chosen circuit is able to support the type of connection needed. 2.1.2 Blocking of terrestrial channels The entity not allocating the circuits shall be able to remotely block the terrestrial channel and remove it from service. This is signalled across the BSSMSC interfa

45、ce using the appropriate signalling exchange as defined in 3GPP TS 08.08. Local blocking of terrestrial channels on the side allocating the circuits may be supported and will result in the concerned channels not being chosen, no information need flow across the interface in these cases. 2.2 Radio ch

46、annel management 2.2.1 Channel configuration management The channel configuration management will be controlled between BSS and maintenance centre, the MSC holding no direct data concerning the allocation of radio timeslots etc. 2.2.2 Radio TCH management 2.2.2.1 Radio channel allocation The BSS sha

47、ll choose the radio channel to be used on the appropriate cell, based on information received from the MSC, which defies the channel type, channel coding and all other parameters relevant to defiing channel type. The chosen radio channel shall be connected to the terrestrial channel in order to supp

48、ort the call. This connection mechanism is not further defined in these Technical Specifications. 2.2.2.2 TCH radio link supervision Radio link supervision of dedicated radio resources shall be the responsibility of the BSS. If communication with the mobile is lost then the BSS can request that the

49、call be cleared. 2.2.2.3 Frequency hopping management Frequency hopping management shall be performed by the BSS. That is the BSS shall store and transmit all hopping parameters for the cell(s) that it controls, the hopping shall be performed such that it is not visible on the BSS/MSC interface. 2.2.2.4 Idle channel observation The quality of idle radio channels shall be measured by the BSS and a condensed form of the information passed back to the MSC. ETSI 3GPP TS 08.02 version 8.0.1 Release 1999 10 ETSI TS 101 642 V8.0.1 (2002-05) 2.2.2.5 TCH power c