1、ETSI TS 1 O0 626 V8.2.0 (2003-03) Technical Specificafion Digital cellular telecommunications system (Phase 2+); Application of the Base Station System Application Part (BSSAP) on the E-Interface (3GPP TS 09.08 version 8.2.0 Release 1999) 3GPP TS 09.08 version 8.2.0 Release 1999 1 ETSI TS 100 626 V8
2、.2.0 (2003-03) Reference RTS/TSGN-010908820 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) No 7803/88 Impor
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6、yright and the foregoing restriction extend to reproduction in all media. O European Telecommunications Standards Institute 2003. All rights reserved. DECTTM, PLUGTESTSTMand UMTSTMare Trade Marks of ETSI registered for the benefit of its Members. TIPHONTM and the TIPHON logo are Trade Marks currentl
7、y 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 09.08 version 8.2.0 Release 1999 2 ETSI TS 100 626 V8.2.0 (2003-03) Intellectual Property Rights IPRs essential or
8、 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 (7PRs); Essential, orpotentially Essen
9、tial, 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). All published ETSI deliverables shall include information which directs the reader to the above source of information. Foreword This Techni
10、cal 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
11、deliverables. The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under ht tn : Nweb ann. et si. og;kev/aiiervfom. asn . ETSI 3GPP TS 09.08 version 8.2.0 Release 1999 3 ETSI TS 100 626 V8.2.0 (2003-03) Contents Intellectual Property Rights 2 Foreword . 2 Foreword . 4 1 2 3 4
12、 4.1 4.2 4.3 5 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 5.10 5.11 5.12 5.13 5.14 6 7 7.1 7.2 8 Scope 5 References 5 Abbreviations . 6 Principles for the use of BSSAP on the E-interface . 6 General . 6 Transfer of DTAP and BSSMAP layer 3 messages on the E-interface 6 Roles of MSC.A, MSC-I and MSC-T 7 Use
13、of the BSSAP on the E-interface . 7 DTAP . 8 Assignment . 8 Handover resource allocation . 8 Handover execution 8 Internal handover indication . 8 Release due to BSS generated reasons . 9 Cipher mode control . 9 Trace invocation . 9 Queuing indication . 10 Data link control SAP1 not equal to “O“ . 1
14、0 Location Acquisition 10 LSA handling . 10 Common ID 10 BSSMAP messages transferred on the E-interface 10 Exceptions for BSSMAP message contents and information element coding when transferred on the E-interface 12 Message contents 12 Information element coding . 13 BSSAP message error handling whe
15、n transferred on the E-interface 13 . Classmark handling 9 . Annex A (informative): Document change history 14 History 15 ETSI 3GPP TS 09.08 version 8.2.0 Release 1999 4 ETSI TS 100 626 V8.2.0 (2003-03) Foreword This Technical Specification (TS) has been produced by the 3d Generation Partnership Pro
16、ject (3GPP). The present document provides a mechanism giving reliable transfer of signalling messages within the 3GPP system. 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 pr
17、esent document, it will be re-released by the TSG with an identiSling 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 c
18、hange 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 09.08 version 8.2.0 Release 1999 5 ETSI TS 100 626
19、V8.2.0 (2003-03) 1 Scope The present document describes the subset of Base Station System Application Part (BSSAP) messages and procedures, defiied in 3GPP TS 08.06 and 3GPP TS 08.08, which is used on the E-interface. A general description can be found in 3GPP TS 03.02 and 3GPP TS 03.09. For the ini
20、tiation and execution of handover between MSCs a subset of BSSMAP procedures are used. For the subsequent control of resources allocated to the Mobile Station (MS) BSSMAP procedures are used. DTAP is used for the transfer of connection management and mobility management messages between the MS and t
21、he controlling MSC. 2 Re fe re nces 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 specifi
22、c 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 theyresent docu
23、ment, A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the same number. For this Release 1999 document, references to GSM documents are for Release 1999 versions (version 8.x.y). il 3GPP TS O 1.04: “Digital cellular telecommunications system (
24、Phase 2+); Abbreviations and acronyms“. 3GPP TS 03.09: “Digital cellular telecommunications system (Phase 2+); Handover procedures“. 3GPP TS 08.06: “Digital cellular telecommunications system (Phase 2+); Signalling transport mechanism specification for the Base Station System - Mobile-services Switc
25、hing Centre (BSS - MSC) interface“. 3GPP TS 08.08: “Digital cellular telecommunications system (Phase 2+); Mobile Switching Centre - Base Station System (MSC - BSS) interface; Layer 3 specification“. 3GPP TS 09.02: “Digital cellular telecommunications system (Phase 2+); Mobile Application Part (MAP)
26、 specification“. 3GPP TS 09.10: “Digital cellular telecommunications system (Phase 2+); Information element mapping between Mobile Station - Base Station System and BSS - Mobile-services Switching Centre (MS - BSS - MSC); Signalling procedures and the Mobile Application Part (MAP)“. 21 31 41 51 61 E
27、TSI 3GPP TS 09.08 version 8.2.0 Release 1999 6 ETSI TS 100 626 V8.2.0 (2003-03) 3 Abbreviations For the purposes of the present document, the following abbreviations apply: BSS BSSAP BSSMAP CCCH DLCI DTAP MSC MSC-A MSC-I MSC-T SAP1 SCCP TCAP Base Station System Base Station System Application Part B
28、ase Station System Management Application Part Common Control CHannel Data Link Connection Identifier Direct Transfer Application Part Mobile-services Switching Centre Mobile-services Switching Centre, Anchor (Anchor MSC) Mobile-services Switching Centre, Intermediate (Intermediate MSC) Mobile-servi
29、ces Switching Centre, Target (Target MSC) Service Access Point Identifier Signalling Connection Control Part Transaction Capabilities Application Part Other abbreviation used in the GSM specifications are listed in 3GPP TS 01.04. 4 4.1 Principles for the use of BSSAP on the E-interface Gen eral The
30、mechanisms for the transfer of the BSSAP messages on the E-interface is defined in 3GPP TS 09.02. The operation of the handover procedures between MSCs and the use of the BSSMAP messages for those procedures is described in 3GPP TS 03.09 and 3GPP TS 09.10. In the same way as a SCCP signalling connec
31、tion is used for the messages relating to one MS on the MSC-BSS interface a TCAP dialogue is used on the E-interface for messages relating to one MS. As no correspondence to the connectionless service on the MSC-BSS interface is used on the E-interface none of the global procedures (see 3GPP TS 08.0
32、8 subclause 3.1) are applicable. The management of the terrestrial circuits between the MSCs is outside the scope of the E-interface (see 3GPP TS 03.09), therefore all procedures, messages and information elements relating to terrestrial circuits are also excluded from the BSSMAP procedures and mess
33、ages used on the E-interface. 4.2 Transfer of DTAP and BSSMAP layer 3 messages on the E-interface The BSSAP data which on the MSC-BSS interface is contained in the user data field of the exchanged SCCP frames (see 3GPP TS 08.06) is on the E-interface transferred as the contents of the signalling inf
34、o in a BSS-APDU parameter as described in 3GPP TS 09.02. The BSSAP data consists of a BSSAP header and a DTAP or BSSMAP layer 3 message. The BSSAP header contains, as specified in 3GPP TS 08.06 (subclauses 6.3.1, 6.3.2 and 6.3.3), of a discrimination parameter, possibly a Data Link Connection Identi
35、fication (DLCI) parameter, and a length indicator. ETSI 3GPP TS 09.08 version 8.2.0 Release 1999 7 ETSI TS 100 626 V8.2.0 (2003-03) 4.3 Roles of MSC-A, MSC-I and MSC-T For the description in this ETS, the MSCs functionality related to the handover between MSCs has been split into three logical parts
36、, MSC-A, MSC-T and MSC-I. The different roles need not necessarily be performed by different MSCs. MSC-A is the call/connection controlling part of the MSC where the call/connection was originally established and the switching point for handover between MSCs. (This corresponds to MSC-A as defiied in
37、 3GPP TS 03.09 and 09.02). The MSC that is the MSC-A will not be changed during the duration of a callkonnection. MSC-T is the part relating to the transitory state during the handover for the MSC to which the MS is handed over when Basic handover or Subsequent handover (see 3GPP TS 03.09) take plac
38、e. (This corresponds, depending on the type of handover to MSC-A, MSC-B or MSC-B in 3GPP TS 03.09 and 09.02). MSC-I is the part of an MSC through which the MSC-A, via an E-interface (or an internal interface) is in contact with the MS. (This corresponds, depending on the type of handover to MSC-A, M
39、SC-B or MSC-B in 3GPP TS 03.09 and 09.02). The MSC that is the MSC-A can also have the role of either the MSC-I or the MSC-T during a period of the call/connection. The following is applicable for the involved MSCs concerning the exchange of BSSAP data on an E-interface before and after a successful
40、 inter MSC handover: At Basic handover, two MSCs are involved, one MSC being MSC-A and one being MSC-T. When this handover has been performed, the two MSCs interworking on the E-interface have the roles of MSC-A and MSC-I respectively, i.e. the MSC that is the MSC-T during the handover is now the MS
41、C-I. At Subsequent handover back to MSC-A, two MSCs are involved. The MSC having the role of MSC-A has also the role of MSC-T. The other MSC involved has the role of MSC-I. When this handover has been completed, there is no exchange of BSS data on the E-interface, i.e. the MSC being the MSC-I before
42、 and during the handover is now no longer taking part. At subsequent handover to an MSC not being MSC-A, three MSCs are involved. The roles of these MSCs are MSC-A, MSC-I, and MSC-T respectively. When this handover has been performed, the two MSCs interworking on an E-interface have the roles of MSC
43、-A and MSC-I respectively, i.e. the MSC that is the MSC-T during the handover is now the MSC-I and the MSC being MSC-I during the handover is now no longer taking part. 5 Use of the BSSAP on the E-interface DTAP is used on the E-interface for the transfer of messages between the MSC-A and the MS. Th
44、e dedicated BSSMAP procedures (3GPP TS 08.08 subclause 3.1) used on the E-interface to some extent are: - assignment; - handover resource allocation; - handover execution; - internal handover indication; - - classmark handling; - cipher mode control; - trace invocation; - queuing indication; - - Loc
45、ation Acquisition. release due to BSS generated reasons; data link control SAP1 not equal to “O“; ETSI 3GPP TS 09.08 version 8.2.0 Release 1999 8 ETSI TS 100 626 V8.2.0 (2003-03) - LSA handling. - CommonID. 5.1 DTAP For the exchange of the DTAP messages (3GPP TS 08.08 subclause 2.2), the involved MS
46、Cs shall act according to the following: - - the MSC-A acts as the MSC; the MSC-I acts as the BSS. 5.2 Assignment The Assignment procedure (3GPP TS 08.08 subclause 3.1.1) is applied on the E-interface with following conditions: - - the MSC-A acts as the MSC; the MSC-I acts as the BSS. The handling o
47、f terrestrial resources is not applicable. 5.3 Handover resource allocation At Basic Inter-MSC Handover (3GPP TS 03.09) the Handover resource allocation procedure (3GPP TS 08.08 subclause 3.1.5.2) is applied on the E-interface with the following conditions: - the MSC-A acts as the MSC; - the MSC-T a
48、cts as the target BSS At Subsequent Inter-MSC Handover (3GPP TS 03.09) the Handover resource allocation procedure (3GPP TS 08.08 subclause 3.1.5.2) is applied on the E-interface with the following conditions: - the MSC-I acts as the MSC; - - the MSC-T acts as the target BSS; if the MSC that is the M
49、SC-A is not also the MSC-T, then this MSC shall act as the target BSS towards the MSC-I and as the MSC towards the MSC-T. The handling of terrestrial resources is not applicable. 5.4 Handover execution For the Handover execution procedure (3GPP TS 08.08 subclause 3.1.5.3) the applicable parts on the E-interface are the transfer of HANDOVER DETECT, HANDOVER COMPLETE and HANDOVER FAILURE messages at inter MSC handover. For those parts, the involved MSCs shall act according to the following: - - - the MSC that is the MSC-A, acts as the MSC; the MSC that is the MSC-I, if it i
