1、 ETSI TS 124 279 V15.0.0 (2018-06) Universal Mobile Telecommunications System (UMTS); LTE; Combining Circuit Switched (CS) and IP Multimedia Subsystem (IMS) services; Stage 3 (3GPP TS 24.279 version 15.0.0 Release 15) TECHNICAL SPECIFICATION ETSI ETSI TS 124 279 V15.0.0 (2018-06)13GPP TS 24.279 vers
2、ion 15.0.0 Release 15Reference RTS/TSGC-0124279vf00 Keywords LTE,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 lucratif enregistre la Sous-Prfecture de Grasse (06) N 78
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9、2018-06)23GPP TS 24.279 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 any, is publicly available for ETSI members and non
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13、dename. 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 Generation Partnership Project (3GPP). The present
14、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 http:/w
15、ebapp.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 Drafting Rules (Verbal forms for the expression of pr
16、ovisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TS 124 279 V15.0.0 (2018-06)33GPP TS 24.279 version 15.0.0 Release 15Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 6g31 Scope 7g32 Refer
17、ences 7g33 Definitions, symbols and abbreviations . 8g33.1 Definitions 8g33.2 Abbreviations . 8g34 Common capability information and identifiers for CS-first and IMS-first scenarios . 8g34.1 UE capability exchange - overview 8g34.2 Personal ME identifier 9g34.3 UE capability version . 9g34.4 Radio e
18、nvironment information . 9g34.5 IM Status 9g35 Common procedures for CS-first and IMS-first scenarios . 10g35.1 Registration of UE capabilities . 10g35.2 Criteria for initiating capability exchange 10g35.3 Criteria for responding to a capability exchange request . 10g35.4 Exchange of radio environme
19、nt information and IM Status . 10g35.5 Storage of capabilities in the UE 11g36 Combining a CS call with an existing IM session 11g36.1 Introduction 11g36.2 Functional entities 11g36.2.1 User equipment . 11g36.2.2 Application server (AS) 11g36.3 Roles . 11g36.3.1 CSI user agent (CUA) . 11g36.3.1.1 Ge
20、neral 11g36.3.1.2 Exchange of UE capability information IM session first scenario . 11g36.3.1.3 Session set-up originating case 12g36.3.1.4 Session set-up terminating case 12g36.3.1.5 CS call set-up originating case . 12g36.3.1.6 CS call set-up terminating case 13g36.3.1.7 SDP exchange UE capability
21、 information exchange . 13g36.3.1.8 SDP offer answer originating case . 14g36.3.1.9 SDP offer answer terminating case 14g37 Combining an IM session with an existing CS call 14g37.1 Introduction 14g37.2 Functional entities 14g37.2.1 User equipment . 14g37.2.2 Application server (AS) 14g37.3 Roles . 1
22、4g37.3.1 CSI user agent (CUA) . 14g37.3.1.1 General 14g37.3.1.2 Exchange of UE capability information CS first scenario . 14g37.3.1.3 Session set-up originating case 15g37.3.1.4 Session set-up terminating case 15g37.3.1.5 CS call set-up originating case . 16g37.3.1.6 CS call set-up terminating case
23、16g37.3.1.7 SDP exchange UE capability information exchange 17g37.3.1.8 SDP offer-answer originating case . 17g3ETSI ETSI TS 124 279 V15.0.0 (2018-06)43GPP TS 24.279 version 15.0.0 Release 157.3.1.9 SDP offer-answer terminating case 17g38 Interaction with supplementary services 17g38.1 Roles . 17g38
24、.1.1 CSI user agent (CUA) . 17g38.1.2 CSI application server (CSI AS) . 17g38.1.2.1 Introduction . 17g38.1.2.2 Call Forwarding and Call Barring . 17g38.2.1.3 Call Completion 17g39 IMS origination and CSI termination . 17g39.1 Introduction 17g39.2 Functional entities 18g39.2.1 User equipment . 18g39.
25、2.2 Application server (AS) 18g39.2.3 MGCF . 18g39.3 Roles . 18g39.3.1 Void 18g39.3.2 CSI UA (CUA) . 18g39.3.3 CSI AS 18g39.3.3.1 General 18g39.3.3.2 Retrieval of public user identity information 18g39.3.3.3 Session Splitting towards terminating CUA . 19g39.3.3.3.1 General 19g39.3.3.3.2 Call Initiat
26、ion towards the CS domain . 19g39.3.3.3.3 Session Initiation towards the IM CN subsystem 20g39.3.3.3.4 Subsequent requests . 20g39.3.3.4 Session Modification . 20g39.3.3.4.1 Adding an IM Session to an existing CS call 20g39.3.3.4.2 Adding a CS call to an existing IMS Session 21g39.3.3.4.3 Modifying
27、an existing CS call and an existing IMS Session . 21g39.3.3.5 Session Combining . 22g39.3.3.6 Session Release . 24g39.3.3.7 Unregistered Service . 24g39.3.3.8 Capability exchange with the CSI UE . 24g3Annex A (normative): Media feature tags defined within the current document 26g3A.1 General . 26g3A
28、.2 Definition of media feature tag g.3gpp.cs-voice 26g3A.3 Definition of media feature tag g.3gpp.cs-video 26g3Annex B (informative): Example signalling flows for the combining of CS calls with IM sessions 27g3B.1 Scope of signalling flows . 27g3B.2 Introduction 27g3B.2.1 General . 27g3B.2.2 Key req
29、uired to interpret signalling flows 27g3B.3 Signalling flows demonstrating CSI session setup when no CS call has yet been set up 28g3B.3.1 Introduction 28g3B.3.2 Establishing a CSI session when no CS call has yet been set up 28g3B.4 Signalling flows demonstrating CSI session setup when a CS call is
30、already established . 37g3B.4.1 Introduction 37g3B.4.2 Establishing a CSI session when CS call has been setup . 37g3B.5 Signalling flows demonstrating capability information exchange in a CS call (only) . 47g3B.5.1 Introduction 47g3B.5.2 Establishing a CS call from a CSI capable UE . 47g3B.6 Signall
31、ing flows demonstrating UE capability exchange with no UE capability version 50g3ETSI ETSI TS 124 279 V15.0.0 (2018-06)53GPP TS 24.279 version 15.0.0 Release 15B.6.1 Introduction 50g3B.6.2 UE capability exchange outside a CS call 50g3B.6.3 UE capability exchange when a CS call is already in progress
32、 58g3B.7 Signalling flows demonstrating UE capability exchange with UE capability version . 61g3B.7.1 Introduction 61g3B.7.2 UE capability exchange with UE capability version 61g3B.8 Signalling flows demonstrating an IMS multimedia session setup with IMS origination and CSI termination. 65g3B.8.1 In
33、troduction 65g3B.8.2 CSI interworking function establishing a combinational CS call and an IMS session to a terminating UE 65g3Annex C (informative): Change history . 77g3History 79g3ETSI ETSI TS 124 279 V15.0.0 (2018-06)63GPP TS 24.279 version 15.0.0 Release 15Foreword This Technical Specification
34、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 id
35、entifying 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 cha
36、nges 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 124 279 V15.0.0 (2018-06)73GPP TS 24.279 version 15.0.0 Release 151 Scope The present document provides the tec
37、hnical realisation for the combination of Circuit Switched calls and IM sessions when using them simultaneously between the same two users. The present document describes the use of CS and IM services in combination, using the existing procedures that have been defined for CS and IMS. It includes th
38、e necessary function as adding an IM session to an ongoing CS call, adding a CS call to an ongoing IM session, supplementary services as they relate to CSICS and supporting capability exchange. The present document is applicable to UE and Application Servers providing for the combination of Circuit
39、Switched calls and IM sessions. 2 References The following documents contain provisions that, 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. - F
40、or 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 t
41、he present document. 1 3GPP TR 21.905: “3G Vocabulary“. 2 3GPP TS 22.279: “Combined CS Calls and IMS Sessions“. 3 3GPP TS 23.279: “Combining CS and IMS services“. 4 3GPP TS 24.008: “Mobile radio interface Layer 3 specification; Core network protocols; Stage 3“. 5 3GPP TS 24.229: “IP multimedia call
42、control protocol based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP); Stage 3“. 6 RFC 3840: “Indicating User Agent Capabilities in the Session Initiation Protocol“. 7 3GPP TS 22.081: “Line Identification; Service description - Stage 1“. 8 3GPP TS 22.087: “User-to-User S
43、ignalling (UUS); Service description - Stage 1“. 9 3GPP TS 24.087: “User-to-User Signalling (UUS) Supplementary Service - Stage 3“. 10 3GPP TS 24.247: “Messaging service using the IP Multimedia (IM) Core Network; Stage 3“. 11 3GPP TS 24.228 Release 5: “Signalling flows for the IP multimedia call con
44、trol based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP); Stage 3“. 12 3GPP TS 33.203: “3G security; Access security for IP-based services“. 13 3GPP TS 26.141 “IP Multimedia System (IMS) Messaging and Presence; Media formats and codecs“. 14 RFC 3264: “An Offer/Answer Mo
45、del with Session Description Protocol (SDP)“. 15 3GPP TS 29.162: “Interworking between the IM CN subsystem and IP networks“. 16 3GPP TS 29.328: “IP Multimedia (IM) Subsystem Sh interface“. 17 RFC 3261: “SIP: Session Initiation Protocol“. 18 RFC 7433: “A Mechanism for Transporting User-to-User Call C
46、ontrol Information in SIP“. ETSI ETSI TS 124 279 V15.0.0 (2018-06)83GPP TS 24.279 version 15.0.0 Release 1519 RFC 7434: “Interworking ISDN Call Control User Information with SIP“. 3 Definitions, symbols and abbreviations 3.1 Definitions For the purposes of the present document, the following terms a
47、nd definitions are given in 3GPP TS 22.279 2. Combinational Service Combinational call Combinational Session CSICS capable UE For the purposes of the present document, the following terms and definitions are given in 3GPP TS 23.279 3. CSI session Multimedia IMS session CSI origination CSI terminatio
48、n IMS origination IMS termination For the purposes of the present document, the following terms and definitions given in 3GPP TR 21.905 1 apply: Universal Subscriber Identity Module (USIM) User Equipment (UE) For the purposes of the present document, the following terms and definitions given in 3GPP
49、 TS 33.203 12 apply: IM Subscriber Identity Module (ISIM) 3.2 Abbreviations For the purposes of the present document, the abbreviations defined in 3GPP TR 21.905 1 and the following abbreviations apply: CSICS Circuit Switched IMS Combinational Service 4 Common capability information and identifiers for CS-first and IMS-first scenarios 4.1 UE capability exchange - overview The terminal capabilities that can be exchanged are: a) Media types which can be supported as IMS media streams (i.e. media comp
