1、 ETSI TS 123 279 V15.0.0 (2018-06) Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Combining Circuit Switched (CS) and IP Multimedia Subsystem (IMS) services; Stage 2 (3GPP TS 23.279 version 15.0.0 Release 15) TECHNICAL SPECIFICATI
2、ON ETSI ETSI TS 123 279 V15.0.0 (2018-06)13GPP TS 23.279 version 15.0.0 Release 15Reference RTS/TSGS-0223279vf00 Keywords GSM,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
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9、 and owned by the GSM Association. ETSI ETSI TS 123 279 V15.0.0 (2018-06)23GPP TS 23.279 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 essen
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13、and conveys no 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 produce
14、d 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 betwe
15、en 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“, “will not“, “can“ and “cannot“ are to be interpreted as described in clause 3.2
16、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 123 279 V15.0.0 (2018-06)33GPP TS 23.279 version 15.0.0 Release 15Contents Intellectual Property Rights 2g3Foreword
17、 . 2g3Modal verbs terminology 2g3Foreword . 5g3Introduction 5g31 Scope 6g32 References 6g33 Definitions and abbreviations . 7g33.1 Definitions 7g33.2 Abbreviations . 7g34 Overall requirements 8g34.1 General description. 8g34.2 Service requirements 8g35 Architectural requirements . 8g35.1 Architectur
18、al requirements . 8g35.2 Session scenarios 9g35.3 UE logic . 9g36 Architecture 10g36.1 General Architecture 10g36.2 CSI Application Server (CSI AS) . 11g36.2.1 CSI AS functionality . 11g36.2.2 Initial Filter Criteria 11g37 Capability exchange . 11g37.1 General . 11g37.2 Capability information . 12g3
19、7.2.1 Information about the current radio environment . 12g37.2.2 UE capability information 12g37.2.3 IM Status . 13g37.3 Registering UE capability information . 13g37.4 Multiple MEs per user 13g38 Information flows . 14g38.1 Exchange of capability information at CS call setup 14g38.2 Exchange of UE
20、 capability information . 15g38.3 User adds an IMS service to an ongoing CS call 17g38.3.1 IMS session set up without media requiring resource reservation 17g38.3.2 IMS session set- up with media requiring resource reservation 19g38.4 User adds a CS call to an ongoing IMS session . 21g38.5 Release o
21、f CSI 22g38.6 Terminating a Multimedia IMS session to a CSI UE . 22g39 Interaction with supplementary services 24g39.1 General . 24g39.2 Line Identification 24g39.2.1 Calling Line Identity Presentation (CLIP) 24g39.2.2 Calling Line Identification Restriction (CLIR) . 24g39.2.3 Connected Line Identif
22、ication Presentation (COLP) 25g39.2.4 Connected Line Identification Restriction (COLR) 25g39.3 Call Forwarding 25g39.4 Call Offering 25g39.4.1 Explicit Call Transfer (ECT) 25g39.5 Call Completion . 26g3ETSI ETSI TS 123 279 V15.0.0 (2018-06)43GPP TS 23.279 version 15.0.0 Release 159.5.1 Call Waiting
23、(CW) and Call Hold (CH) . 26g39.6 Call Barring 26g310 Other considerations . 26g310.1 Handover 26g310.2 Relation to SMS . 26g3Annex A (Informative): Support of CSI origination towards IMS termination with CSI interworking . 27g3A.1 Introduction 27g3A.2 Overview 27g3A.3 Procedures 27g3A.3.1 General A
24、rchitecture 27g3A.3.3 Call flows for setting up the voice session for CSI origination and IMS termination with CSI interworking . 28g3A.3.4 Call flows for adding IMS sessions to existing voice calls for CSI origination with CSI interworking 31g3Annex B (informative): Change history . 35g3History 36g
25、3ETSI ETSI TS 123 279 V15.0.0 (2018-06)53GPP TS 23.279 version 15.0.0 Release 15Foreword This Technical Report 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 ap
26、proval. 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;
27、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. Introduction
28、 The combination of CS and IMS services (CSI) is the parallel operation of a CS service and an IMS session between the same two users. It does not require a specific subscription and a specific charging correlation. ETSI ETSI TS 123 279 V15.0.0 (2018-06)63GPP TS 23.279 version 15.0.0 Release 151 Sco
29、pe The present document provides architectural details to combine CS services and IMS services for using them in parallel between the same two users in a peer-to-peer context. The document provides a detailed description of how capabilities and identities are exchanged to enable the combination of C
30、S and IMS services between the same two UEs. The present document includes the following capabilities that enable the combination of CS and IMS services: - Radio capability exchange. - SIP based UE terminal capability exchange. - MSISDN number exchange in SIP. - Establishing an IMS session in parall
31、el to an ongoing CS call between the same two UEs. - Establishing a CS call in parallel to an ongoing IMS session between the same two users UEs. - Network support for establishing multimedia sessions between a UE that uses IMS origination and a UE that uses CSI termination. The individual CS call o
32、r IMS service that are combined are described in their respective specifications. 2 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, editio
33、n 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 late
34、st version of that document in the same Release as the present document. 1 3GPP TR 21.905: “Vocabulary for 3GPP Specifications“. 2 3GPP TS 23.228: “IP Multimedia Subsystem (IMS); Stage 2“. 3 3GPP TS 23.081: “Line Identification supplementary services; Stage 2“. 4 3GPP TS 23.221: “Architectural Requi
35、rements“. 5 3GPP TS 23.002: “Network Architecture“. 6 3GPP TS 24.008: “Mobile radio interface Layer 3 specification; Core network protocols; Stage 3“. 7 3GPP TS 29.002: “Mobile Application Part (MAP) specification“. 8 3GPP TS 23.082: “Call Forwarding (CF) supplementary services; Stage 2“. 9 3GPP TS
36、23.083: “Call Waiting (CW) and Call Hold (HOLD) supplementary services; Stage 2“. 10 3GPP TS 23.060: “General Packet Radio Service (GPRS); Service description; Stage 2“. 11 3GPP TS 23.088: “Call Barring (CB) Supplementary Service; Stage 2“. 12 3GPP TS 23.091: “Explicit Call Transfer (ECT) Supplement
37、ary Service; Stage 2“. 13 3GPP TS 22.279: “Combined CS Calls and IMS Sessions; Stage 1“. 14 3GPP TS 22.115: “Service Aspects; Charging and Billing“. ETSI ETSI TS 123 279 V15.0.0 (2018-06)73GPP TS 23.279 version 15.0.0 Release 1515 3GPP TS 23.087: “User-to-User Signalling (UUS) Supplementary Service;
38、 Stage 2“. 16 3GPP TS 23.078: “Customised Applications for Mobile network Enhanced Logic (CAMEL) Phase 4; Stage 2“. 17 3GPP TS 23.206: “Voice Call Continuity (VCC) between Circuit Switched (CS) and IP Multimedia Subsystem (IMS); Stage 2“. 18 IETF RFC 3840: “Indicating User Agent Capabilities in the
39、Session Initiation Protocol (SIP)“. 19 IETF RFC 3841: “Caller Preferences for the Session Initiation Protocol (SIP)“. 20 3GPP TS 22.087: “User-to-User Signalling (UUS); Service description; Stage 1“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the terms
40、and definitions given in TR 21.905 1 and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905 1. CSI session: a multimedia session that uses the CS domain to transport all or some media components (typically, voice) a
41、nd the IMS/PS domain to transport the other media components. A CSI session can be created either by establishing first a CS call and subsequently a concurrent IMS session(s), or by establishing first an IMS session(s) and subsequently a concurrent CS call. From the user point of view, a CSI session
42、 is conceived as a single multimedia session. Multimedia IMS session: a multimedia session that uses only the IMS/PS domain to transport both real-time and non-real-time media components. CSI origination: the case when a UE initiates a CS call and subsequently adds an IMS session(s), or vice versa,
43、addressed towards the same user. CSI termination: the case when a call to a UE is terminated in the CS domain (e.g. for real-time component), while an IMS session(s) from the same originating user and towards the same UE is terminated in the IMS/PS domain. IMS origination: the case when a UE initiat
44、es an IMS session(s) and the CS domain is not involved in the originating part of the session(s). IMS termination: the case when an IMS session(s) is terminated in the IMS/PS domain and the CS domain is not involved in the terminating part of the session(s). 3.2 Abbreviations For the purposes of the
45、 present document, the following abbreviations apply: AS Application Server CSI Combination of CS and IMS services DTM Dual Transfer Mode IAM Initial Address Message CON Connect Message MRFC Media Resource Function; Control part MRFP Media Resource Function; Physical Part MSRP Message Session Relay
46、Protocol RAT Radio Access Technology RTP Real-time Transfer Protocol ETSI ETSI TS 123 279 V15.0.0 (2018-06)83GPP TS 23.279 version 15.0.0 Release 154 Overall requirements 4.1 General description The “combination of CS and IMS services“ (CSI) is essentially a combination of existing CS and IMS servic
47、es, i.e. mechanisms and procedures for the IMS part of the CSI session apply according to TS 23.228 2. The UE presents the CS call and IMS session within one context to the user. To facilitate this, the following capabilities shall be provided: 1. Exchange of information related to the current radio
48、 environment; 2. Exchange of terminal capability information; 3. Addition of an IMS session to an ongoing CS call; 4. Addition of a CS call to an ongoing IMS session. 5. Network support for establishing multimedia sessions between a UE that uses IMS origination and a UE that uses CSI termination. CS
49、I services can be provided: 1. Between two CSI capable UEs that both use CSI origination and CSI termination; 2. Between a UE that uses IMS origination and a UE that uses CSI termination. 4.2 Service requirements The service requirements of combining IMS and CS services are described in TS 22.279 13. 5 Architectural requirements 5.1 Architectural requirements The following general requirements are applicable to CSI: - The solution is applicable to GERAN and UTRAN; - A CSI capable UE requires DTM capability (in case of GERAN acces
