ETSI TS 100 590 V8.11.0 (2002-01) Technical Specification Digital cellular telecommunications system (Phase 2+); Mobile-services Switching Centre - Base Station System (MSC-BSS) interface; Layer 3 specification (3GPP TS 08.08 version 8.11.0 Release 1999) R GLOBAL SYSTEM FOR MOBILE COMMUNICATIONS 3GPP TS 08.08 version 8.11.0 Release 1999 1 ETSI TS 100 590 V8.11.0 (2002-01) Reference RTS/TSGG-020808Q8R8 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 à but non lucratif enregistrée à la Sous-Préfecture de Grasse (06) N° 7803/88 Important notice Individual copies of the present document can be downloaded from: http://www.etsi.org 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 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 present 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://portal.etsi.org/tb/status/status.asp If you find errors in the present document, send your comment to: [email protected] 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. © European Telecommunications Standards Institute 2002. All rights reserved. ETSI 3GPP TS 08.08 version 8.11.0 Release 1999 2 ETSI TS 100 590 V8.11.0 (2002-01) Intellectual 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 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 (http://webapp.etsi.org/IPR/home.asp). 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 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 being references to the corresponding ETSI deliverables. The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under www.etsi.org/key . ETSI 3GPP TS 08.08 version 8.11.0 Release 1999 3 ETSI TS 100 590 V8.11.0 (2002-01) Contents Intellectual Property Rights................................................................................................................................2 Foreword.............................................................................................................................................................2 Foreword.............................................................................................................................................................8 1 Scope........................................................................................................................................................9 1.1 References..........................................................................................................................................................9 1.2 Abbreviations...................................................................................................................................................10 2 Application to interface structures.........................................................................................................10 2.1 The BSS Operation and Maintenance Application Part...................................................................................11 2.2 The Direct Transfer Application Part...............................................................................................................11 2.3 The BSS Management Application Part...........................................................................................................11 2.4 Handling of abnormal events related to the BSSAP Header............................................................................11 3 The BSS Management Application Part................................................................................................12 3.1 BSSMAP Procedures.......................................................................................................................................12 3.1.1 Assignment.................................................................................................................................................13 3.1.1.1 Successful Operation.............................................................................................................................13 3.1.1.2 Assignment Failure...............................................................................................................................14 3.1.1.3 Abnormal Conditions............................................................................................................................15 3.1.2 Blocking and Unblocking...........................................................................................................................16 3.1.2.1 Successful Operation.............................................................................................................................16 3.1.2.2 Abnormal Conditions............................................................................................................................17 3.1.2.2.1 Applying to the Single Circuit Block Procedure.............................................................................18 3.1.2.2.2 Applying to the Circuit Group Block Procedure.............................................................................18 3.1.3 Resource Indication....................................................................................................................................19 3.1.3.1 Successful Operation.............................................................................................................................19 3.1.4 Reset...........................................................................................................................................................20 3.1.4.1 Global Reset Procedure.........................................................................................................................20 3.1.4.1.1 Reset at the BSS..............................................................................................................................20 3.1.4.1.2 Reset at the MSC.............................................................................................................................20 3.1.4.1.3 Abnormal Conditions......................................................................................................................21 3.1.4.1.3.1 Abnormal Condition at the BSS.................................................................................................21 3.1.4.1.3.2 Abnormal Condition at the MSC...............................................................................................21 3.1.4.2 Reset Circuit..........................................................................................................................................21 3.1.4.2.1 Reset Circuit at the BSS..................................................................................................................21 3.1.4.2.2 Reset Circuit at the MSC.................................................................................................................21 3.1.4.2.3 Abnormal conditions.......................................................................................................................22 3.1.5 External Handover......................................................................................................................................22 3.1.5.1 Handover Required Indication..............................................................................................................22 3.1.5.1.1 Generation of the HANDOVER REQUIRED message..................................................................22 3.1.5.2 Handover Resource allocation..............................................................................................................24 3.1.5.2.1 Operation of the procedure..............................................................................................................25 3.1.5.2.2 Handover Resource Allocation Failure...........................................................................................26 3.1.5.2.3 Abnormal conditions.......................................................................................................................27 3.1.5.3 Handover execution..............................................................................................................................27 3.1.5.3.1 Operation of the procedure..............................................................................................................27 3.1.5.3.2 Handover Failure.............................................................................................................................28 3.1.5.3.3 Abnormal Conditions......................................................................................................................29 3.1.5a Handover from GSM to another System.....................................................................................................29 3.1.5a.1 Generation of the HANDOVER REQUIRED message for intersystem handover...............................30 3.1.5a.2 Inter-System Handover Resource Allocation Failure............................................................................31 3.1.5a.3 Intersystem handover Execution...........................................................................................................31 3.1.5a.4 Inter System Handover Failure.............................................................................................................31 3.1.5a.5 Abnormal Conditions............................................................................................................................31 3.1.6 Internal Intra-Cell Handover Procedure......................................................................................................32 3.1.7 Internal Inter-Cell Handover Procedure......................................................................................................32 ETSI 3GPP TS 08.08 version 8.11.0 Release 1999 4 ETSI TS 100 590 V8.11.0 (2002-01) 3.1.8 Handover Candidate Enquiry......................................................................................................................33 3.1.8.1 Successful Operation.............................................................................................................................33 3.1.8.2 Abnormal conditions.............................................................................................................................33 3.1.9 Release of Radio Resource And Terrestrial Resource................................................................................34 3.1.9.1 Release Due To Transaction Completion..............................................................................................34 3.1.9.2 Release due to BSS generated reason...................................................................................................34 3.1.9.3 Release due to successful handover......................................................................................................34 3.1.10 Paging.........................................................................................................................................................34 3.1.11 Trace Invocation.........................................................................................................................................35 3.1.12 Flow Control...............................................................................................................................................35 3.1.12.1 Philosophy.............................................................................................................................................35 3.1.12.2 Processor Overload at the MSC............................................................................................................36 3.1.12.3 Processor/CCCH overload at the BSS..................................................................................................36 3.1.12.4 Message throughput congestion............................................................................................................36 3.1.13 Classmark Handling Procedures.................................................................................................................36 3.1.13.1 Classmark request procedure................................................................................................................36 3.1.13.2 Classmark updating procedure..............................................................................................................36 3.1.14 Cipher Mode Control..................................................................................................................................37 3.1.14.1 Successful Operation.............................................................................................................................37 3.1.14.2 Abnormal Conditions............................................................................................................................37 3.1.15 General SCCP Abnormal Conditions.........................................................................................................37 3.1.16 Initial MS message......................................................................................................................................38 3.1.17 Queuing Indication.....................................................................................................................................38 3.1.17.1 Operation of the procedure in case of assignment procedure................................................................38 3.1.17.2 Operation of the procedure in case of hand-over resource allocation procedure..................................39 3.1.18 Data Link Control SAPI not Equal to "0"...................................................................................................39 3.1.18.1 Data link set up across the radio interface.............................................................................................39 3.1.18.1.1 MS to MSC direction.......................................................................................................................39 3.1.18.1.2 MSC to MS Direction......................................................................................................................39 3.1.18.2 Choice of the signalling link.................................................................................................................39 3.1.19 BSSMAP Error Handling...........................................................................................................................40 3.1.19.1 Definitions of Types of Information Elements......................................................................................40 3.1.19.2 Erroneous Events..................................................................................................................................41 3.1.19.3 Non-erroneous Events...........................................................................................................................41 3.1.19.4 Other Events..........................................................................................................................................41 3.1.19.5 Appropriate Error Message and Cause Value.......................................................................................42 3.1.19.6 Unequipped Circuit Identification Code...............................................................................................42 3.1.19.7 Field Elements.......................................................................................................................................43 3.1.20 Load Indication Procedure..........................................................................................................................44 3.1.20.1 Operation of the procedure....................................................................................................................44 3.1.21 Voice group call service and voice broadcast service call set-up and resource assignment.......................44 3.1.21.1 Successful operation..............................................................................................................................44 3.1.21.2 VGCS/VBS call set-up abnormal cases................................................................................................45 3.1.21.3 VGCS/VBS call set-up failure..............................................................................................................45 3.1.22 Voice group call service and voice broadcast service Assignment procedure............................................45 3.1.22.1 Successful operation..............................................................................................................................45 3.1.22.2 VGCS/VBS Assignment abnormal cases..............................................................................................45 3.1.22.3 VGCS/VBS Assignment failure............................................................................................................45 3.1.23 Spare...........................................................................................................................................................46 3.1.24 Voice group call uplink control procedure.................................................................................................46 3.1.24.1 Uplink allocation procedure..................................................................................................................46 3.1.24.1.1 Successful uplink allocation operation............................................................................................46 3.1.24.1.2 Unsuccessful uplink allocation operation........................................................................................46 3.1.24.2 Uplink release procedure.......................................................................................................................47 3.1.24.3 Uplink seize procedure..........................................................................................................................47 3.1.25 PDSS1 flow control....................................................................................................................................47 3.1.26 Circuit re-selection procedure.....................................................................................................................47 3.1.27 LSA handling..............................................................................................................................................48 3.1.28 Location Acquisition...................................................................................................................................48 3.1.28.1 Information transfer between SMLC and BSS......................................................................................48 3.1.28.1.1 Successful Operation.......................................................................................................................48 3.1.28.1.2 Abnormal cases...............................................................................................................................48 ETSI 3GPP TS 08.08 version 8.11.0 Release 1999 5 ETSI TS 100 590 V8.11.0 (2002-01) 3.1.28.1.3 Segmentation...................................................................................................................................48 3.1.28.2 Location request....................................................................................................................................49 3.1.28.2.1 Successful Operation.............................................................................................................................49 3.1.28.2.2 Unsuccessful Operation...................................................................................................................49 3.1.28.2.3 Abnormal cases...............................................................................................................................49 3.1.28.2.4 Overload..........................................................................................................................................50 3.1.29 Connectionless Information Transfer procedure.........................................................................................50 3.1.29.1 Unsuccessful Operation........................................................................................................................50 3.1.29.2 Abnormal cases.....................................................................................................................................50 3.1.29.3 Segmentation.........................................................................................................................................50 3.1.30 Common ID................................................................................................................................................51 3.2 Message Formats and Coding..........................................................................................................................51 3.2.1 Message Contents.......................................................................................................................................52 3.2.1.1 ASSIGNMENT REQUEST..................................................................................................................52 3.2.1.2 ASSIGNMENT COMPLETE...............................................................................................................53 3.2.1.3 ASSIGNMENT FAILURE...................................................................................................................54 3.2.1.4 BLOCK.................................................................................................................................................54 3.2.1.5 BLOCKING ACKNOWLEDGE..........................................................................................................55 3.2.1.6 UNBLOCK...........................................................................................................................................55 3.2.1.7 UNBLOCKING ACKNOWLEDGE....................................................................................................55 3.2.1.8 HANDOVER REQUEST.....................................................................................................................56 3.2.1.9 HANDOVER REQUIRED...................................................................................................................58 3.2.1.10 HANDOVER REQUEST ACKNOWLEDGE......................................................................................59 3.2.1.11 HANDOVER COMMAND..................................................................................................................59 3.2.1.12 HANDOVER COMPLETE..................................................................................................................59 3.2.1.13 HANDOVER SUCCEEDED................................................................................................................60 3.2.1.14 HANDOVER CANDIDATE ENQUIRE..............................................................................................60 3.2.1.15 HANDOVER CANDIDATE RESPONSE...........................................................................................60 3.2.1.16 HANDOVER FAILURE......................................................................................................................60 3.2.1.17 RESOURCE REQUEST.......................................................................................................................61 3.2.1.18 RESOURCE INDICATION.................................................................................................................61 3.2.1.19 PAGING...............................................................................................................................................62 3.2.1.20 CLEAR REQUEST...............................................................................................................................62 3.2.1.21 CLEAR COMMAND...........................................................................................................................62 3.2.1.22 CLEAR COMPLETE............................................................................................................................63 3.2.1.23 RESET..................................................................................................................................................63 3.2.1.24 RESET ACKNOWLEDGE..................................................................................................................63 3.2.1.25 HANDOVER PERFORMED...............................................................................................................63 3.2.1.26 OVERLOAD.........................................................................................................................................64 3.2.1.27 MSC INVOKE TRACE........................................................................................................................64 3.2.1.28 BSS INVOKE TRACE.........................................................................................................................65 3.2.1.29 CLASSMARK UPDATE......................................................................................................................65 3.2.1.30 CIPHER MODE COMMAND..............................................................................................................65 3.2.1.31 CIPHER MODE COMPLETE..............................................................................................................65 3.2.1.32 COMPLETE LAYER 3 INFORMATION............................................................................................66 3.2.1.33 QUEUEING INDICATION..................................................................................................................66 3.2.1.34 SAPI "n" REJECT.................................................................................................................................66 3.2.1.35 [spare]...................................................................................................................................................67 3.2.1.36 [spare]...................................................................................................................................................67 3.2.1.37 HANDOVER REQUIRED REJECT....................................................................................................67 3.2.1.38 RESET CIRCUIT.................................................................................................................................67 3.2.1.39 RESET CIRCUIT ACKNOWLEDGE..................................................................................................67 3.2.1.40 HANDOVER DETECT........................................................................................................................67 3.2.1.41 CIRCUIT GROUP BLOCK..................................................................................................................68 3.2.1.42 CIRCUIT GROUP BLOCKING ACKNOWLEDGE...........................................................................68 3.2.1.43 CIRCUIT GROUP UNBLOCK............................................................................................................68 3.2.1.44 CIRCUIT GROUP UNBLOCKING ACKNOWLEDGE.....................................................................68 3.2.1.45 CONFUSION........................................................................................................................................69 3.2.1.46 CLASSMARK REQUEST...................................................................................................................69 3.2.1.47 UNEQUIPPED CIRCUIT.....................................................................................................................69 3.2.1.48 CIPHER MODE REJECT.....................................................................................................................69 3.2.1.49 LOAD INDICATION...........................................................................................................................70 ETSI 3GPP TS 08.08 version 8.11.0 Release 1999 6 ETSI TS 100 590 V8.11.0 (2002-01) 3.2.1.50 VGCS/VBS SETUP..............................................................................................................................70 3.2.1.51 VGCS/VBS SETUP ACK.....................................................................................................................70 3.2.1.52 VGCS/VBS SETUP REFUSE..............................................................................................................70 3.2.1.53 VGCS/VBS ASSIGNMENT REQUEST..............................................................................................71 3.2.1.54 VGCS/VBS ASSIGNMENT RESULT.................................................................................................71 3.2.1.55 VGCS/VBS ASSIGNMENT FAILURE...............................................................................................71 3.2.1.56 VGCS/VBS QUEUING INDICATION................................................................................................72 3.2.1.57 UPLINK REQUEST.............................................................................................................................72 3.2.1.58 UPLINK REQUEST ACKNOWLEDGE.............................................................................................72 3.2.1.59 UPLINK REQUEST CONFIRMATION..............................................................................................72 3.2.1.60 UPLINK RELEASE INDICATION.....................................................................................................73 3.2.1.61 UPLINK REJECT COMMAND...........................................................................................................73 3.2.1.62 UPLINK RELEASE COMMAND.......................................................................................................73 3.2.1.63 UPLINK SEIZED COMMAND...........................................................................................................73 3.2.1.64 SUSPEND.............................................................................................................................................74 3.2.1.65 RESUME..............................................................................................................................................74 3.2.1.66 CHANGE CIRCUIT.............................................................................................................................74 3.2.1.67 CHANGE CIRCUIT ACKNOWLEDGE.............................................................................................74 3.2.1.68 Common ID...........................................................................................................................................74 3.2.1.69 LSA INFORMATION..........................................................................................................................75 3.2.1.70 CONNECTION ORIENTED INFORMATION...................................................................................75 3.2.1.71 PERFORM LOCATION REQUEST....................................................................................................75 3.2.1.72 PERFORM LOCATION RESPONSE..................................................................................................75 3.2.1.73 PERFORM LOCATION ABORT........................................................................................................76 3.2.1.74 CONNECTIONLESS INFORMATION...............................................................................................76 3.2.2 Signalling element coding..........................................................................................................................76 3.2.2.1 Message Type.......................................................................................................................................79 3.2.2.2 Circuit Identity Code.............................................................................................................................80 3.2.2.3 Connection Release Requested.............................................................................................................80 3.2.2.4 Resource Available...............................................................................................................................81 3.2.2.5 Cause.....................................................................................................................................................82 3.2.2.6 IMSI......................................................................................................................................................84 3.2.2.7 TMSI.....................................................................................................................................................84 3.2.2.8 Number Of MSs....................................................................................................................................84 3.2.2.9 Layer 3 Header Information..................................................................................................................85 3.2.2.10 Encryption Information.........................................................................................................................85 3.2.2.11 Channel Type........................................................................................................................................86 3.2.2.12 Periodicity.............................................................................................................................................92 3.2.2.13 Extended Resource Indicator................................................................................................................92 3.2.2.14 Total Resource Accessible....................................................................................................................93 3.2.2.15 LSA Identifier.......................................................................................................................................93 3.2.2.16 LSA Identifier List................................................................................................................................93 3.2.2.17 Cell Identifier........................................................................................................................................94 3.2.2.18 Priority..................................................................................................................................................96 3.2.2.19 Classmark Information Type 2..............................................................................................................97 3.2.2.20 Classmark Information Type 3..............................................................................................................97 3.2.2.21 Interference Band To Be Used..............................................................................................................98 3.2.2.22 RR Cause..............................................................................................................................................98 3.2.2.23 LSA Information...................................................................................................................................98 3.2.2.24 Layer 3 Information..............................................................................................................................99 3.2.2.25 DLCI.....................................................................................................................................................99 3.2.2.26 Downlink DTX Flag.............................................................................................................................99 3.2.2.27 Cell Identifier List...............................................................................................................................100 3.2.2.28 Response Request...............................................................................................................................103 3.2.2.29 Resource Indication Method...............................................................................................................103 3.2.2.30 Classmark Information Type 1............................................................................................................103 3.2.2.31 Circuit Identity Code List....................................................................................................................104 3.2.2.32 Diagnostics..........................................................................................................................................105 3.2.2.33 Chosen Channel..................................................................................................................................105 3.2.2.34 Cipher Response Mode.......................................................................................................................106 3.2.2.35 Layer 3 Message Contents..................................................................................................................107 3.2.2.36 Channel Needed..................................................................................................................................107 ETSI 3GPP TS 08.08 version 8.11.0 Release 1999 7 ETSI TS 100 590 V8.11.0 (2002-01) 3.2.2.37 Trace Type..........................................................................................................................................107 3.2.2.38 TriggerID............................................................................................................................................107 3.2.2.39 Trace Reference..................................................................................................................................108 3.2.2.40 TransactionID......................................................................................................................................108 3.2.2.41 Mobile Identity....................................................................................................................................108 3.2.2.42 OMCID...............................................................................................................................................108 3.2.2.43 Forward Indicator................................................................................................................................108 3.2.2.44 Chosen Encryption Algorithm............................................................................................................109 3.2.2.45 Circuit Pool.........................................................................................................................................109 3.2.2.46 Circuit Pool List..................................................................................................................................112 3.2.2.47 Time Indication...................................................................................................................................112 3.2.2.48 Resource Situation..............................................................................................................................113 3.2.2.49 Current Channel Type 1......................................................................................................................114 3.2.2.50 Queuing Indicator...............................................................................................................................115 3.2.2.51 Speech Version...................................................................................................................................115 3.2.2.52 Assignment Requirement....................................................................................................................116 3.2.2.53 [spare].................................................................................................................................................116 3.2.2.54 Talker Flag..........................................................................................................................................116 3.2.2.55 Group Call Reference..........................................................................................................................116 3.2.2.56 eMLPP Priority...................................................................................................................................116 3.2.2.57 Configuration Evolution Indication....................................................................................................117 3.2.2.58 Old BSS to New BSS information......................................................................................................117 3.2.2.59 Spare...................................................................................................................................................118 3.2.2.60 LCS QoS.............................................................................................................................................118 3.2.2.61 LSA Access Control Suppression.......................................................................................................118 3.2.2.62 LCS Priority........................................................................................................................................118 3.2.2.63 Location Type.....................................................................................................................................118 3.2.2.64 Location Estimate...............................................................................................................................119 3.2.2.65 Positioning Data..................................................................................................................................119 3.2.2.66 LCS Cause...........................................................................................................................................119 3.2.2.67 LCS Client Type.................................................................................................................................120 3.2.2.68 APDU..................................................................................................................................................120 3.2.2.69 Network Element Identity...................................................................................................................120 3.2.2.70 GPS Assistance Data...........................................................................................................................120 3.2.2.71 Deciphering Keys................................................................................................................................121 3.2.2.72 Return Error Request...........................................................................................................................121 3.2.2.73 Return Error Cause..............................................................................................................................121 3.2.2.74 Segmentation.......................................................................................................................................121 3.2.2.75 Service Handover................................................................................................................................122 3.2.2.76 Source RNC to target RNC transparent information (UMTS)............................................................122 3.2.2.77 Source RNC to target RNC transparent information (cdma2000).......................................................122 3.2.3 Signalling Field Element Coding..............................................................................................................123 3.2.3.1 Extra information................................................................................................................................123 3.2.3.2 Current Channel type 2.......................................................................................................................124 3.2.3.3 Target cell radio information...............................................................................................................124 3.2.3.4 GPRS Suspend Information................................................................................................................125 3.2.3.5 MultiRate configuration Information..................................................................................................125 3.2.3.6 Dual Transfer Mode information........................................................................................................125 3.2.3.7 Inter RAT Handover Info....................................................................................................................126 3.2.3.8 cdma2000 Capability Information......................................................................................................126 3.2.4 List of Timers in the BSSMAP Procedures..............................................................................................127 3.3 SDL Representation Of The Procedures At The BSS....................................................................................127 4 Broadcast Information Control Channel..............................................................................................127 5 Vocabulary...........................................................................................................................................127 6 List of diagrams....................................................................................................................................129 Annex A (informative): Change history.....................................................................................................138 History............................................................................................................................................................139 ETSI 3GPP TS 08.08 version 8.11.0 Release 1999 8 ETSI TS 100 590 V8.11.0 (2002-01) Foreword 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 contents 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 document 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 3GPP TS 08.08 version 8.11.0 Release 1999 9 ETSI TS 100 590 V8.11.0 (2002-01) 1 Scope The present document specifies the layer 3 procedures used on the Base Station System (BSS) to Mobile-services Switching Centre (MSC) interface for control of GSM services. For the purposes of call control and mobility management, messages are not interpreted at the Base Station System (BSS) which acts as a relay function. These messages and procedures are documented in 3GPP TS 04.08, the only relevant issues covering these messages in the present document are those concerned with error conditions at the interface, and the headers that are required for the correct addressing of the messages. This is specified in more detail in 3GPP TS 08.06. The functional split between MSC and BSS is defined in 3GPP TS 08.02 and states that the BSS is responsible for local radio resource allocation and in order to support this the required procedures between BSS and MSC are defined in detail in the present document. 3GPP TS 08.02 also states that the BSS is responsible for the scheduling of all CCCH/BCCH messages and therefore some procedures for providing the BSS with the necessary information to be passed on these channels for individual calls (i.e. paging) are defined in the present document, but the scheduling is not discussed. This interface and consequently these layer 3 procedures are designed to support BSSs providing one or more cells. 1.1 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 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 the present document. a[1] 3GPP TS 01.04: "Abbreviations and acronyms". [2] 3GPP TS 03.03: "Numbering, addressing and identification". [3] 3GPP TS 03.09: "Handover procedures". [3a] 3GPP TS 03.32: "Universal Geographical Area Description (GAD)". [4] Void. [5] 3GPP TS 03.71 : "Location Services (LCS); Functional Description – Stage 2" [6] 3GPP TS 04.08: "Mobile radio interface layer 3 specification". [7] 3GPP TS 04.21: "Rate adaption on the Mobile Station - Base Station System (MS - BSS) interface". [8] Void. [9] 3GPP TS 05.02: "Multiplexing and multiple access on the radio path". [10] Void. [11] Void. [12] Void. [13] 3GPP TS 05.08: "Radio subsystem link control". ETSI