1、GSM I ECHNICAL n 3 P ECIFICATIO N GSM 08.02 April 1997 Verston 5.1.0 Source: ETSI TC-SMG Reference: TS/SMG-O30802QRl ICs: 33.020 Key words: Digital cellular telecommunications system, Global System for Mobile communications (GSM) Digital cellular telecommunications system (Phase 2+); Base Station Sy
2、stem - Mobile-services Switching Centre (BSS - MSC) interface; Interface principles (GSM 08.02) ETSI European Telecommunications Standards Institute ETSI Secretariat Postal address: F-O6921 Sophia Antipolis CEDEX - FRANCE Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
3、X.400: efr, a=atlas, p=etsi, s=secretariat - Internet: secretariatetsi.fr 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
4、European Telecommunications Standards Institute 1997. All rights reserved. STD-ETSI GSM 08-02-ENGL 1997 9 3400855 0393939 7Lb 9 Page 2 GSM 08.02 version 5.1 .O: April 1997 Whilst every care has been taken in the preparation and publication of this document, errors in content, typographical or otherw
5、ise, may occur. If you have comments concerning its accuracy, please write to “ETSI Editing and Committee Support Dept.“ at the address shown on the title page. . - STDUETS1 GSM 08.02-ENGL 1997 m 3400855 0193940 438 m Page 3 GSM 08.02 version 5.1 .O. April 1997 Contents Foreword . 5 1 General 7 1.1
6、Scope . 7 1.2 Normative references 7 1.3 Definitions and abbreviations . 8 2 Functional division between Base Station System (BSS) and MSC . 9 Terrestrial channel management . 10 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.1 1 2.2.3 2.2.4 . 2.1.1 Terrestrial channel allocation 10 2.1.2 Blocking of te
7、rrestrial channels . 10 Radio channel management 10 2.2.1 Channel configuration management . 10 2.2.2 Radio TCH management 10 2.2.2.1 Radio channel allocation 10 2.2.2.2 TCH radio link supervision . 10 2.2.2.3 Frequency hopping management 10 2.2.2.4 Idle channel observation 11 2.2.2.5 TCH power cont
8、rol . 11 2.2.2.6 TCH channel release . 11 BCCH CCCH management . 11 2.2.3.1 Scheduling of BCCH and CCCH messages 11 DCCH Management 11 2.2.4.1 DCCH link supervision . 11 2.2.4.2 DCCH channel release 11 2.2.4.3 DCCH power control 11 2.2.4.4 Radio Channel Allocation 11 Resource indication . 11 Channel
9、 coding decoding 11 Transcodinghate adaptation 12 Interworking function (data calls) . 12 Measurement information 12 2.7.1 2.7.2 Uplink measurement information 12 2.7.3 Traffic information . 12 Handover . 12 2.8.1 Internal handover within one cell . 12 2.8.2 Internal handover between cells 12 2.8.3
10、External handover . 13 2.8.3.1 Recognition that a handover is required for a radio reason . 13 2.8.3.2 Recognition that a handover is required for a traffic reason 13 2.8.3.3 Decision of Target Cell 13 2.8.3.4 Execution . 13 Mobility management . 13 Call control . 13 Security features 13 2.1 1.1 Use
11、r data confidentiality 13 2.1 1.2 User identity confidentiality 13 2.1 1.3 Signalling information confidentiality . 13 2.1 1.4 Authentication of users 14 Measurement information reported from the MS 12 3 4 5 Transcoderhate adapter integration 14 Multiplexing of common and dedicated control channels
12、14 Classes of signalling messages 14 STDeETSI GSH OB=O-ENGL 1%97 II 3YP08.55 0393943 374 Page 4 GSM 08.02 version 5.1 .O. April 1997 6 Support of services and features other than speech 14 6.1 Data services . 14 6.2 Supplementary services 15 7 Interface structures . 15 8 Operation and maintenance .
13、15 Annex A (informative): Remote Mobile Switching Unit (RMSU) . 16 A.l Introduction . 16 A.2 Functions provided by the RMSU . 16 A.3 General requirements . 16 History . 17 Page 5 GSM 08.02 version 5.1 .O: April 1997 Foreword This Global System for Mobile communications Technical Specification (GTS)
14、has been produced by the Special Mobile Group (SMG) Technical Committee (TC) of the European Telecommunications Standards Institute (ETSI). This GTS gives the interface principles Base Station System (BSS) to Mobile-services Switching Centre (MSC) interface within the digital cellular telecommunicat
15、ions system. The contents of this GTS are subject to continuing work within TC-SMG and may change following formal TC-SMG approval. Should TC-SMG modify the contents of this GTS it will then be republished by ETSI with an identifying change of release date and an increase in version number as follow
16、s: Version 5.x.y where: y the third digit is incremented when editorial only changes have been incorporated in the specification; x the second digit is incremented for all other types of changes, .e. technical enhancements, corrections, updates, etc. The specification from which this GTS has been de
17、rived was originally based on CEPT documentation, hence the presentation of this GTS may not be entirely in accordance with the ETSI rules. 1 General 1.1 Scope This Global System for Mobile communications Technical Specification (GTS) gives the principles on which the detailed interface specificatio
18、ns in the rest of the GSM 08.0X 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 or more. T
19、he 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 08.0 serie
20、s of Technical Specifications, where the BSS will be considered as a whole. The BSS-MSC interface defined in the GSM 08 series of Technical Specifications is designed to support a wide range of possible architectures on both sides. Characteristics like the physical location of the transcodershate ad
21、aptation 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 this GTS contains guidance information concerning the use of remote mobile switching units, which fo
22、r the purposes of this GTS 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 kbiffs digital transmission system interfaces. Each 2 048 kbiffs interface provides 31*64 kbiffs channels which c
23、an 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 OS1 model. This interface is defined at the
24、 boundary of the MSC and has a per channel bit rate of 64 kbiWs, but the net radio path traffic channel is at a rate of less than 16 kbiffs. A transcoder or rate adapter function is thus needed for the rate conversion. The interface is designed such that the transcoding or rate adaptation function m
25、ay 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 GSM08.01 allowing each component and the system as a whole to evolve. 1.2 Normative references This GTS incorporates by
26、 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 dated references, subsequent amendments to or revisions of any of these publications apply to this GTS only when
27、 incorporated in it by amendment or revision. For undated references, the latest edition of the publication referred to applies. 31 41 GSM O1 .O4 (ETR 350): “Digital cellular telecommunications system (Phase 2+); Abbreviations and acronyms“. GSM 03.09: “Digital cellular telecommunications system (Ph
28、ase 2+); Handover procedures“. GSM 03.1 O: “Digital cellular telecommunications system (Phase 2+); GSM Public Land Mobile Network (PLMN) connection types“. GSM 03.20 (ETS 300 929): “Digital cellular telecommunications system (Phase 2+); Security related network functions“. Previous page is blank STD
29、-ETSI GSM 002-ENGL 1997 m 3400 011744 083 m Page 8 GSM 08.02 version 5.1.0: April 1997 i51 71 11 41 I 51 i 71 GSM 04.08 (ETS 300 940): “Digital cellular telecommunications system (Phase 2+); Mobile radio interface layer 3 specification“. GSM 08.01 : “Digital cellular telecommunications system; Base
30、Station System - Mobile services Switching Centre (BSS - MSC) interface; General aspects“. GSM 08.04: “Digital cellular telecommunications system; Base Station System - Mobile-services Switching Centre (BSS - MSC) interface; Layer 1 specification“. GSM 08.06: “Digital cellular telecommunications sys
31、tem (Phase 2+); Signalling transport mechanism specification for the Base Station System - Mobile-services Switching Centre (BSS - MSC) interface“. GSM 08.08: “Digital cellular telecommunications system (Phase 2+); Mobile-services Switching Centre - Base Station System (MSC - BSS) interface: Layer 3
32、 specification“. GSM 08.20: “Digital cellular telecommunications system (Phase 2+); Rate adaption on the Base Station System - Mobile-services Switching Centre (BSS - M SC) in terface“. GSM 08.51 : “Digital cellular telecommunications system; Base Station Controller - Base Transceiver Station (BSC -
33、 BTS) interface; General aspects“. GSM 08.52: “Digital cellular telecommunications system; Base Station Controller - Base Transceiver Station (BSC - BTS) interface; Interface principles“. GSM 08.54: “Digital cellular telecommunications system (Phase 2+); Base Station Controller - Base Transceiver St
34、ation (BSC - BTS) interface; Layer 1 structure of physical circuits“. GSM 08.56: “Digital cellular telecommunications system; Base Station Controller - Base Transceiver Station (BSC - BTS) interface; Layer 2 specification“. GSM 08.58: “Digital cellular telecommunications system (Phase 2+); Base Stat
35、ion Controller - Base Transceiver Station (BSC - BTS) interface; Layer 3 specification“. GSM 08.60 (ETS 300 737): “Digital cellular telecommunications system (Phase 2+); Inband control of remote transcoders and rate adaptors for Enhanced Full Rate (EFR) and full rate traffic channels“. GSM 08.61 (ET
36、S 300 979): “Digital cellular telecommunications system; In-band control of remote transcoders and rate adaptors for half rate traffic channels“. GSM 12.01 (ETS 300 612-2): “Digital cellular telecommunications system (Phase 2); Network Management (NM); Common aspects of GSMDCS 1 800“. 1.3 Definition
37、s and abbreviations Abbreviations used in this GTS are listed in GSM O1 .O4 STD-ETSI GSM 08-02-ENGL 1997 3400855 0393945 TIT Page 9 GSM 08.02 version 5.1 .O: April 1997 2 Functional division between Base Station System (BSS) and MSC Functional split IteMask xrestrial Channel Management channel alloc
38、ation blocking indication adio channel management adio channel configuration management frequency hopping management idle channel observation power control JH management channel allocation (choice) link supervision channel release CCH/CCCH management scheduling of messages CCH management link superv
39、ision channel release 1CCH allocation adio resource indication report status of idle channels ,hanne1 coding decoding on the basis of call type ranscodinghate adaptation iterworking Function (data calls) 1 easurements reported from MS uplink traffic landover internal (within one cell)if provided int
40、ernal (between cells) if provided external recognition radio reason external recognition traffic reason decision execution Aobility Management authentication location updating DRX paging (scheduling) paging (continued) 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 MSC,VLR,HLR X X i( (Invoked
41、 by MSC) K (Invoked by MSC) MSC defines call type X X MSC informed MSC informed X X X X X X Page 10 GSM 08.02 version 5.1 .O: April 1997 Itemas k Call control Functional split (concluded) BSS MSC,VLR,HLR X X User data encryption Key and permitted algorithms from MSC Signalling element encryption X K
42、ey and permitted algorithms from MSC 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 circu
44、it, 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 BSS/MSC interfa
45、ce using the appropriate signalling exchange as defined in GSM 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 channe
46、l 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 shall c
47、hoose the radio channel to be used on the appropriate cell, based on information received from the MSC, which defines the channel type, channel coding and all other parameters relevant to defining channel type. The chosen radio channel shall be connected to the terrestrial channel in order to suppor
48、t 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 ca
49、ll 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. STDmETSI GSM 08=02-ENGL 1797 3400855 0193947 872 Page 11 GSM 08.02 version 5.1 .O: April 1997 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. 2.2
