1、 ETSI TS 123 202 V15.0.0 (2018-07) Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Circuit switched data bearer services (3GPP TS 23.202 version 15.0.0 Release 15) TECHNICAL SPECIFICATION GLOBAL SYSTEM FOR MOBILE COMMUNICATIONSRETSI ETS
2、I TS 123 202 V15.0.0 (2018-07)13GPP TS 23.202 version 15.0.0 Release 15Reference RTS/TSGC-0323202vf00 Keywords GSM,UMTS 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 lucrati
3、f enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice The present document can be downloaded from: http:/www.etsi.org/standards-search The present document may be made available in electronic versions and/or in print. The content of any electronic and/or print versions of the pres
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9、he GSM Association. ETSI ETSI TS 123 202 V15.0.0 (2018-07)23GPP TS 23.202 version 15.0.0 Release 15Intellectual Property Rights Essential patents IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information pertaining to these essential IPRs, if a
10、ny, 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
11、on the ETSI Web server (https:/ipr.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
12、may be, or may become, essential to the present document. Trademarks The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners. ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
13、right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks. Foreword This Technical Specification (TS) has been produced by ETSI 3rd G
14、eneration 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, 3
15、GPP 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“, “will not“, “can“ and “cannot“ are to be interpreted as described in clause 3.2 of the ETSI Dra
16、fting 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 123 202 V15.0.0 (2018-07)33GPP TS 23.202 version 15.0.0 Release 15Contents Intellectual Property Rights 2g3Foreword . 2g3Modal ver
17、bs terminology 2g3Foreword . 4g31 Scope 5g32 References 5g33 Definitions and abbreviations . 6g33.1 Definitions 6g33.2 Abbreviations . 6g34 General . 6g34.1 Limited set of UTRAN Iu mode PLMN connection models 7g34.1.1 Transparent data 7g34.1.2 Non-transparent data . 9g34.2 Limited set of GERAN Iu mo
18、de PLMN connection models 9g34.2.1 Transparent data 9g34.2.2 Non-transparent data . 11g35 Bearer Capabilities for UMTS Data Services 11g35.1 Bearer Capabilities for UMTS Data Services . 12g35.1.1 Transparent Data . 12g35.1.2 Non-Transparent Fax 12g35.1.3 NT Data 12g35.1.4 Transparent Data for Suppor
19、t of Multimedia 12g35.2 BC-IE to RAB QoS Mapping . 13g36 Iu and Nb User Plane 14g36.1 NT services . 14g36.2 T services 14g37 RLC 14g38 Initial Synchronisation and resynchronisation . 14g39 Call Control 14g310 Handover Issues . 14g310.1 Signalling issues . 14g310.2 User Plane 14g3Annex A (informative
20、): Change history . 15g3History 16g3ETSI ETSI TS 123 202 V15.0.0 (2018-07)43GPP TS 23.202 version 15.0.0 Release 15Foreword This Technical Specification (TS) has been produced by the 3rdGeneration Partnership Project (3GPP). The contents of the present document are subject to continuing work within
21、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
22、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 b
23、een incorporated in the document. ETSI ETSI TS 123 202 V15.0.0 (2018-07)53GPP TS 23.202 version 15.0.0 Release 151 Scope The present document provides an overview of the architecture and issues related to the provision of Circuit Switched Bearer Services in a 3G mobile network (UMTS) operating in UT
24、RAN or GERAN Iu mode. Handover to GERAN A/Gb mode is also considered. NOTE: The Gb interface does not play any role in the scope of the present document although the term “A/Gb mode“ is used. 2 References The following documents contain provisions which, through reference in this text, constitute pr
25、ovisions 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 re
26、ference 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 TS 22.001: “Principles of circuit telecommunication services supported by a PLMN“. 2 3GPP TR 21.905: “Vocabular
27、y for 3GPP Specifications“. 3 3GPP TS 22.003: “Circuit Teleservices supported by a PLMN“. 4 3GPP TS 22.002: “Circuit Bearer Services (BS) supported by a Public Land Mobile Network (PLMN)“. 5 3GPP TS 22.101: “Service principles“. 6 3GPP TS 22.105: “Services and service capabilities“. 7 3GPP TS 23.002
28、: “Network architecture“. 8 3GPP TS 23.034: “High Speed Circuit Switched Data (HSCSD) -Stage 2“. 9 3GPP TS 23.101: “General UMTS architecture“. 10 3GPP TS 23.107: “Quality of Service (QoS), concept and architecture“. 11 3GPP TS 24.022: “Radio Link Protocol (RLP) for circuit switched bearer and teles
29、ervices “. 12 3GPP TS 25.322: “Radio Link Control (RLC) protocol specification“. 13 3GPP TS 25.415: “UTRAN Iu Interface user plane protocols“. 14 3GPP TS 27.001: “General on Terminal Adaption Functions (TAF) for Mobile Station (MS)“. 15 3GPP TS 29.007: “General requirements on interworking between t
30、he Public Land Mobile Network (PLMN) and the Integrated Services Digital Network (ISDN) or Public Switched Telephone Network (PSTN)“. 16 ITU-T Recommendation V.90 (09/98): “A digital modem and analogue modem pair for use on the Public Switched Telephone Network (PSTN) at data signalling rates of up
31、to 56 000 bit/s downstream and up to 33 600 bit/s upstream“. 17 ITU-T Recommendation T.30 “Procedures for document facsimile transmission in the general switched telephone network“. 18 3GPP TS 44.021: “Rate adaption on the Mobile Station - Base Station System (MS - BSS) interface“. 19 3GPP TS 48.020
32、: “Rate adaption on the Base Station System - Mobile-services Switching Centre (BSS - MSC) interface“. ETSI ETSI TS 123 202 V15.0.0 (2018-07)63GPP TS 23.202 version 15.0.0 Release 1520 ITU-T Recommendation I.366.1 (06/98): “Segmentation and Reassembly Service Specific Convergence Sublayer for the AA
33、L type 2“. 21 ITU-T Recommendation Q.2630.1 (12/99): “AAL type 2 signalling protocol (Capability Set 1)“. 22 3GPP TS 43.051: “GSM/EDGE Radio Access Network (GERAN) overall description, stage 2“ 23 3GPP TS 43.010: “GSM Public Land Mobile Network (PLMN) connection types“ 24 3GPP TS 29.415: “Core Netwo
34、rk Nb Interface User Plane Protocols“. 25 ITU-T Recommendation I.363.2: “B-ISDN ATM Adaptation Layer specification : Type 2 AAL“. 26 ITU-T Recommendation I.460 (02/99): “Multiplexing, rate adaption and support of existing interfaces“. 27 ITU-T Recommendation I.366.2: “AAL type 2 service specific con
35、vergence sublayer for narrow-band services“. 3 Definitions and abbreviations 3.1 Definitions The term Mobile Station (MS) in the present document is synonymous with the term User Equipment (UE ) as defined in 3GPP TR 21.905 2. For the purposes of the present document the following terms and definiti
36、ons given in 3GPP TS 21.905 2 and the following apply: A/Gb mode: indicates that the text applies only to a system or sub-system which operate in A/Gb mode of operation, i.e. with a functional division that is in accordance with the use of an A or a Gb interface between the radio access network and
37、the core network Iu mode: indicates that the text applies only to a system or a sub-system which operates in Iu mode of operation, i.e. with a functional division that is in accordance with the use of an Iu-CS or Iu-PS interface between the radio access network and the core network 3.2 Abbreviations
38、 For the purposes of the present document, the abbreviations given in 3GPP TS 21.905 2 and the following apply. BC Bearer Capability CE Connection Element CT Circuit GBR Guaranteed Bitrate MBR Maximum BitrateRA Rate Adaptation Functions RNL Radio Network Layer S/C Split/Combine FunctionWAIUR Wanted
39、Air Interface User Rate 4 General CS data services in UMTS are divided according to 3GPP TS 22.001 1 into Bearer Services (3GPP TS 22.002 4) and end-to-end Teleservices (3GPP TS 22.003 3). These services are built on services provided by the Access Network. The Radio Access Bearer Services are invok
40、ed through the RNL-SAP provided by the Iu User Plane to the Non-access ETSI ETSI TS 123 202 V15.0.0 (2018-07)73GPP TS 23.202 version 15.0.0 Release 15stratum on the Core Network side, and the corresponding SAP provided by the RLC to the Non-access stratum on the Terminal side. Figure 1 shows the ser
41、vice architecture. TE MT RAN CN Iu EDGE NODE CN Gateway TE UMTS End-to-End Service TE/MT Local Bearer Service UMTS Bearer Service External Bearer Service UMTS Bearer Service Radio Access Bearer Service CN Bearer Service Backbone Bearer Service Iu Bearer Service Radio Bearer Service Physical Radio Be
42、arer Service Physical Bearer Service Figure 1: Service architecture 4.1 Limited set of UTRAN Iu mode PLMN connection models 4.1.1 Transparent data Figure 2 shows the connection model for synchronous transparent CS data. In general all the user data bits are conveyed between the MT and the IWF as the
43、y are received from the TE. This implies that the RLC SDU/ Iu UP frame is transparent. Figure 3 shows the connection model for asynchronous transparent CS data. The rate adaptation function RA0 from 3GPP TS 44.021 18 (adapted to the RLC SDU size) is used for converting between asynchronous data and
44、a synchronous bit stream. End-to-end flow control is not applicable in UTRAN Iu mode, thus no status bits are conveyed over RAN/UTRAN (see 3GPP TS 27.001 14). ETSI ETSI TS 123 202 V15.0.0 (2018-07)83GPP TS 23.202 version 15.0.0 Release 15Figure 2: Connection model for Synchronous T CS data Figure 3:
45、 Connection model for Asynchronous T CS data I/Fcct I/Fcct CDMA CDMA MAC Iu UP Iu UP MAC ATM ATM Modem Codec ISDN TA R I/F Uu Iu TE MT RNC MSC/IWF Transparent Synchronous Data RLC RLC AAL2 AAL2 No IWF I/Fcct I/Fcct CDMA CDMA MAC Iu UP Iu UP MAC ATM ATM Modem Codec ISDN TA R I/F Uu Iu TE MT RNC MSC/I
46、WF Transparent Asynchronous Data RLC RLC AAL2 AAL2 RA0 RA0 ETSI ETSI TS 123 202 V15.0.0 (2018-07)93GPP TS 23.202 version 15.0.0 Release 154.1.2 Non-transparent data Figure 4 shows the connection model for asynchronous non-transparent CS data. Figure 4: Connection model for Asynchronous NT CS data 4.
47、2 Limited set of GERAN Iu mode PLMN connection models This subclause gives an overall overview on the PLMN connection models for circuit switched data services in GERAN Iu mode. The stage 2 description is given in 3GPP TS 43.051 22. For details concerning the PLMN connection models refer to 3GPP TS
48、43.010 23. 4.2.1 Transparent data Figure 5 shows the connection model for synchronous transparent CS data. In general all the user data bits are conveyed between the MT and the IWF as they are received from the TE. This implies that the RLC SDU/ Iu UP frame is transparent. Figure 6 shows the connect
49、ion model for asynchronous transparent CS data. The rate adaptation function RA0 from 3GPP TS 44.021 18 (adapted to the RLC SDU size) is used for converting between asynchronous data and a synchronous bit stream. End-to-end flow control is not applicable in GERAN Iu mode, thus no status bits are conveyed over RAN/GERAN (see 3GPP TS 27.001 14). I/Fcct I/Fcct CDMA CDMA MAC Iu UP Iu UP MAC ATM ATM Modem Codec ISDN TA R I/F Uu Iu TE MT RNC MSC/IWF Non-transparent Asynchronous Data RLC RLC AAL2 AAL2 L
