1、 ETSI TS 143 130 V14.0.0 (2017-04) Digital cellular telecommunications system (Phase 2+) (GSM); GSM/EDGE Iur-g interface; Stage 2 (3GPP TS 43.130 version 14.0.0 Release 14) TECHNICAL SPECIFICATION GLOBAL SYSTEM FOR MOBILE COMMUNICATIONSRETSI ETSI TS 143 130 V14.0.0 (2017-04)13GPP TS 43.130 version 1
2、4.0.0 Release 14Reference RTS/TSGR-0643130ve00 Keywords GSM ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Impo
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9、ion. ETSI ETSI TS 143 130 V14.0.0 (2017-04)23GPP TS 43.130 version 14.0.0 Release 14Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI
10、members and non-members, and can be found in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (https:/ipr.
11、etsi.org/). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to
12、 the present document. Foreword This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP). The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identities or GSM identities. These should be interpreted as
13、being references to the corresponding ETSI deliverables. The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under http:/webapp.etsi.org/key/queryform.asp. Modal verbs terminology In the present document “shall“, “shall not“, “should“, “should not“, “may“, “need not“, “will“
14、, “will not“, “can“ and “cannot“ are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TS 143 130 V14.0.0 (2017-04)33GPP TS
15、 43.130 version 14.0.0 Release 14Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 4g31 Scope 5g32 References 5g33 Definitions, symbols and abbreviations . 5g33.1 Definitions 5g33.2 Symbols 6g33.3 Abbreviations . 6g34 Motivation, principles and assumptions
16、. 6g34.1 Motivation 6g34.2 Principles 7g34.3 Void 7g35 General aspects . 8g35.1 Network architecture 8g35.1.1 General 8g35.1.2 MS Identifiers in Iu mode . 8g35.1.3 MS Identifiers in A/Gb mode . 10g35.2 Iur-g interface capabilities 10g36 IurInterface Protocols . 10g36.1 General . 10g36.2 Functions of
17、 the Iur-g interface protocols 11g36.3 Iur-g Interface protocol structure 11g36.4 Radio signalling protocols 12g37 Radio Network Layer: RNSAP protocol 12g37.1 General . 12g37.2 Basic mobility procedures 13g37.2.1 General 13g37.2.2 Paging . 13g37.2.3 Cell Update . 14g37.2.4 Registration Area Update 1
18、5g37.2.5 RRC Connection Release 16g37.2.6 Radio Resource Reserve Handover 16g37.2.6.1 General 16g37.2.6.2 Successful operation 17g37.2.6.3 Abnormal conditions . 18g37.2.6.3.1 BSS Radio Resource Reservation Failure . 18g37.2.6.3.2 Handover failure from MS/UE 19g37.3 Void 20g37.4 Global procedures. 20
19、g37.4.1 General 20g37.4.2 Error Indication . 20g37.4.3 Common Measurement Functions 20g37.4.4 Information Exchange Functions 21g3Annex A (Informative): Change history . 22g3History 23g3ETSI ETSI TS 143 130 V14.0.0 (2017-04)43GPP TS 43.130 version 14.0.0 Release 14Foreword This Technical Specificatio
20、n has been produced by the 3rdGeneration 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
21、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 c
22、hanges of substance, i.e. technical enhancements, corrections, updates, etc. z the third digit is incremented when editorial only changes have been incorporated in the document. ETSI ETSI TS 143 130 V14.0.0 (2017-04)53GPP TS 43.130 version 14.0.0 Release 141 Scope The present document provides an ov
23、erview of the Iur-g interface. It describes the motivation, principles and functionality of this interface. It does not contain the detailed description, which it is included in the stage 3 Technical Specifications. 2 References The following documents contain provisions which, through reference in
24、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. I
25、n the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document. 1 3GPP TR 21.905, “3rd Generation Partnership Project; Technical Specification Group Services and Sy
26、stem Aspects; Vocabulary for 3GPP Specifications” 2 3GPP TS 23.236, “3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Intra-domain connection of Radio Access Network (RAN) nodes to multiple Core Network (CN) nodes” 3 3GPP TS 25.331, “3rd Generation Partn
27、ership Project; Technical Specification Group Radio Access Network; RRC Protocol Specification” 4 3GPP TS 25.420, “3rd Generation Partnership Project; Technical Specification Group Radio Access Network; UTRAN Iur Interface General Aspects and Principles” 5 3GPP TS 25.423, “3rd Generation Partnership
28、 Project; Technical Specification Group Radio Access Network; UTRAN Iur Interface RNSAP Signalling” 6 3GPP TS 43.051, “Technical Specification 3rd Generation Partnership Project; Technical Specification Group GSM/EDGE Radio Access Network; Overall description - Stage 2; (Release 5)” 7 3GPP TS 44.118
29、, “3rd Generation Partnership Project; Technical Specification Group GSM EDGE Radio Access Network; Mobile radio interface layer 3 specification, Radio Resource Control Protocol (RRC); Iu mode” 3 Definitions, symbols and abbreviations 3.1 Definitions For the purposes of the present document, the ter
30、ms and definitions given in 3GPP TR 21.905 1 and the following ones apply: A/Gb mode: mode of operation of the MS when connected to the Core Network via GERAN and the A and/or Gb interfaces. MS: Unless stated otherwise, this refers with no distinction to both MS and UE. Iu mode: mode of operation of
31、 the MS when connected to the Core Network via GERAN or UTRAN and the Iu interface. ETSI ETSI TS 143 130 V14.0.0 (2017-04)63GPP TS 43.130 version 14.0.0 Release 14RAN node: a BSS or a RNC. 3.2 Symbols For the purposes of the present document, the following symbols apply: A Interface between a BSS an
32、d an MSC Gb Interface between a BSS and an SGSN Iu Interface between a BSS/RNC and the CN Iur Interface between two RNSs Iur-g Interface between two BSSs or between a BSS and an RNS Um Interface between a GERAN MS and a BSS Uu Interface between a UE and the RNS 3.3 Abbreviations For the purposes of
33、the present document, the following abbreviations apply: BSC Base Station Controller BSS Base Station Sub-system CBSS Controlling Base Station Sub-system CN Core Network CRNC Controlling Radio Network Controller GERAN GSM/EDGE Radio Access Network GPRS General Packet Radio Service GRA GERAN Registra
34、tion Area LA Location Area MS Mobile StationMSC Mobile Switching Centre NACC Network Assisted Cell Change NNSF NAS Node Selection Function RA Routeing Area RAN Radio Access Network RNC Radio Network Controller RNS Radio Network Sub-system RNSAP Radio Network Subsystem Application Part RNTI Radio Net
35、work Temporary Identity RRA RAN Registration Area RRM Radio Resource Management SBSC Serving BSC SBSS Serving BSS SGSN Serving GPRS Support Node SRNC Serving RNC TBSS Target BSS UE User Equipment UMTS Universal Mobile Telephony System URA UTRAN Registration Area UTRAN UMTS Terrestrial Radio Access N
36、etwork 4 Motivation, principles and assumptions 4.1 Motivation As part of the work to connect GERAN via the Iu interface to the CN, the GRA and RNTI concepts have also been adopted for the GERAN. With these concepts, an inactive mobile in the RRC-GRA_PCH state (see 3GPP TS 44.118 7) will perform sig
37、nalling to the network whenever it changes the GRA. Since GRAs need not be constrained by BSC coverage areas, it is possible that the MS reselects a cell on a different BSC but on the same GRA. ETSI ETSI TS 143 130 V14.0.0 (2017-04)73GPP TS 43.130 version 14.0.0 Release 14In order maintain the abili
38、ty to page the mobile in the GRA with the correct RNTI, as well as to enable a path for a GRA update procedure with the serving BSC, it is necessary to have an Iur-g interface between the BSSs. The same principle applies for dual-RAN capable mobiles. The architecture specifications permit network op
39、erators to design networks that alleviate the potential problem caused by dual mode mobiles frequently toggling between UTRAN and GERAN coverage areas (e.g. in indoor coverage situations): for instance, common LAIs and RAIs for GERAN and UTRAN cells in the same geographical area. Defining GERAN and
40、UTRAN cells in common LAs and RAs permits an inactive mobile to change from GERAN to UTRAN coverage or, vice versa, without any signalling to the network. Prior to Release 5, this is possible because GSM/GPRS is does not use the connection oriented Iu interface. From Release 5 on, an inactive MS wou
41、ld signal to the network when a cell change involving change of RAN takes place. To prevent this, operators may configure GRA IDs and URA IDs to indicate the same registration area. To enable paging across these registration areas, as well as to enable the possibility to perform GRA/URA update proce
42、dures with the serving BSC/RNC, it is necessary to have an Iur-g interface between the BSS and the RNC. The definition of GRAs/URAs has the following benefits: - It increases the MT call success rate: by reducing the frequency of updates, it reduces the time during which the MS is believed by the RA
43、N to be in the old registration area, when paging requests would fail. - It reduces the amount of signalling on the radio interface, since the mobile does not need to indicate cell changes when moving within a GRA/URA. - For the same reason, it reduces the amount of signalling in the network, thus d
44、ecreasing the number of updates and of SRNC/SBSC relocation procedures. The Iur-g may bring other benefits: - Support for the SRNC/SBSC relocation procedure: the current SRNS relocation procedure defined for UTRAN using the Iur interface could be reused, improving the performance of the procedure. T
45、he Cell Update and Relocation Commit messages could be transferred over this interface. 4.2 Principles The Iur-g interface shall be designed based on the following principles: - The Iur-g interface shall be open. - From a logical standpoint, this interface is a point to point interface between one B
46、SS and one BSS or RNC within a PLMN. From a physical point of view, the interface could share Iu or other transmission resources. - The Iur-g interface is optional. The presence of the Iur-g shall be transparent to the MS: the 3GPP specifications shall ensure that all mobiles function correctly irre
47、spective of the presence or absence of the Iur-g interface. - This interface shall support the exchange of signalling information between a BSS and a BSC/RNC. The Iur-g interface shall not carry user information. - A GRA contains one or more GERAN cells and zero or more UTRAN cells. A URA contains o
48、ne or more UTRAN cells and zero or more GERAN cells. NOTE: The term RAN Registration Area (RRA) is used in this document to refer to a registration area irrespective of whether it contains GERAN cells, UTRAN cells or both types of cells. The terms GRA and URA will be used in GERAN and UTRAN specific
49、ations, respectively, where GRAs may contain UTRAN cells and URAs may contain GERAN cells. - In Iu mode, the BSC has been allocated an identifier (BSC-Id) from the same pool of numbers as the RNC-Id. 4.3 Void ETSI ETSI TS 143 130 V14.0.0 (2017-04)83GPP TS 43.130 version 14.0.0 Release 145 General aspects 5.1 Network architecture 5.1.1 General The Iur-g interface is the logical interface between two BSSs in Iu mode or between an RNS and a BSS in Iu mode or between a BSS in A/Gb mode and a UTRA-NTDD RNS. The different Iur-g interface combinations are dep
