1、 ETSI TS 123 279 V14.0.0 (2017-05) 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 14.0.0 Release 14) TECHNICAL SPECIFICATI
2、ON ETSI ETSI TS 123 279 V14.0.0 (2017-05)13GPP TS 23.279 version 14.0.0 Release 14Reference RTS/TSGS-0223279ve00 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
3、but non lucratif 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 versi
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7、ilm except as authorized by written permission of ETSI. The content of the PDF version shall not be modified without the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2017. All rights re
8、served. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM and LTE are Trade Marks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. oneM2M logo is protected for the benefit of its Members GS
9、M and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI TS 123 279 V14.0.0 (2017-05)23GPP TS 23.279 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
10、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 (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Se
11、cretariat. Latest updates are available 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 update
12、s on the ETSI Web server) which are, or may be, or may become, essential to 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 ide
13、ntities, 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:/webapp.etsi.org/key/queryform.asp. Modal verbs terminology In the present docum
14、ent “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 provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except w
15、hen used in direct citation. ETSI ETSI TS 123 279 V14.0.0 (2017-05)33GPP TS 23.279 version 14.0.0 Release 14Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 5g3Introduction 5g31 Scope 6g32 References 6g33 Definitions and abbreviations . 7g33.1 Definitions
16、7g33.2 Abbreviations . 7g34 Overall requirements 8g34.1 General description. 8g34.2 Service requirements 8g35 Architectural requirements . 8g35.1 Architectural requirements . 8g35.2 Session scenarios 9g35.3 UE logic . 9g36 Architecture 10g36.1 General Architecture 10g36.2 CSI Application Server (CSI
17、 AS) . 11g36.2.1 CSI AS functionality . 11g36.2.2 Initial Filter Criteria 11g37 Capability exchange . 12g37.1 General . 12g37.2 Capability information . 12g37.2.1 Information about the current radio environment . 12g37.2.2 UE capability information 12g37.2.3 IM Status . 13g37.3 Registering UE capabi
18、lity 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 capability information . 16g38.3 User adds an IMS service to an ongoing CS call 18g38.3.1 IMS session set up without media requiring resource
19、reservation 18g38.3.2 IMS session set- up with media requiring resource reservation 19g38.4 User adds a CS call to an ongoing IMS session . 22g38.5 Release of CSI 23g38.6 Terminating a Multimedia IMS session to a CSI UE . 23g39 Interaction with supplementary services 25g39.1 General . 25g39.2 Line I
20、dentification 25g39.2.1 Calling Line Identity Presentation (CLIP) 25g39.2.2 Calling Line Identification Restriction (CLIR) . 25g39.2.3 Connected Line Identification Presentation (COLP) 26g39.2.4 Connected Line Identification Restriction (COLR) 26g39.3 Call Forwarding 26g39.4 Call Offering 26g39.4.1
21、Explicit Call Transfer (ECT) 26g39.5 Call Completion . 27g3ETSI ETSI TS 123 279 V14.0.0 (2017-05)43GPP TS 23.279 version 14.0.0 Release 149.5.1 Call Waiting (CW) and Call Hold (CH) . 27g39.6 Call Barring 27g310 Other considerations . 27g310.1 Handover 27g310.2 Relation to SMS . 28g3Annex A (Informat
22、ive): Support of CSI origination towards IMS termination with CSI interworking . 29g3A.1 Introduction 29g3A.2 Overview 29g3A.3 Procedures 29g3A.3.1 General Architecture 29g3A.3.3 Call flows for setting up the voice session for CSI origination and IMS termination with CSI interworking . 31g3A.3.4 Cal
23、l flows for adding IMS sessions to existing voice calls for CSI origination with CSI interworking 33g3Annex B (informative): Change history . 37g3History 38g3ETSI ETSI TS 123 279 V14.0.0 (2017-05)53GPP TS 23.279 version 14.0.0 Release 14Foreword This Technical Report has been produced by the 3rd Gen
24、eration 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 identifying change of release dat
25、e 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 changes of substance, i.e. technic
26、al enhancements, corrections, updates, etc. z the third digit is incremented when editorial only changes have been incorporated in the document. Introduction 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
27、not require a specific subscription and a specific charging correlation. ETSI ETSI TS 123 279 V14.0.0 (2017-05)63GPP TS 23.279 version 14.0.0 Release 141 Scope The present document provides architectural details to combine CS services and IMS services for using them in parallel between the same two
28、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 CS and IMS services between the same two UEs. The present document includes the following capabilities that enable the combination of CS and IMS
29、 services: - Radio capability exchange. - SIP based UE terminal capability exchange. - MSISDN number exchange in SIP. - Establishing an IMS session in parallel 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 UE
30、s. - Network support for establishing multimedia sessions between a UE that uses IMS origination and a UE that uses CSI termination. The individual CS call or IMS service that are combined are described in their respective specifications. 2 References The following documents contain provisions, whic
31、h, 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 specific reference, subsequent revisions do not apply. - For a non-specific reference,
32、 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 the present document. 1 3GPP TR 21.905: “Vocabulary for 3GPP Specifications“. 2 3GPP TS 23.2
33、28: “IP Multimedia Subsystem (IMS); Stage 2“. 3 3GPP TS 23.081: “Line Identification supplementary services; Stage 2“. 4 3GPP TS 23.221: “Architectural Requirements“. 5 3GPP TS 23.002: “Network Architecture“. 6 3GPP TS 24.008: “Mobile radio interface Layer 3 specification; Core network protocols; St
34、age 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 23.083: “Call Waiting (CW) and Call Hold (HOLD) supplementary services; Stage 2“. 10 3GPP TS 23.060: “General Packet Radio Service (GPRS); Serv
35、ice description; Stage 2“. 11 3GPP TS 23.088: “Call Barring (CB) Supplementary Service; Stage 2“. 12 3GPP TS 23.091: “Explicit Call Transfer (ECT) Supplementary 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 Bill
36、ing“. ETSI ETSI TS 123 279 V14.0.0 (2017-05)73GPP TS 23.279 version 14.0.0 Release 1415 3GPP TS 23.087: “User-to-User Signalling (UUS) Supplementary Service; 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 C
37、all Continuity (VCC) between Circuit Switched (CS) and IP Multimedia Subsystem (IMS); Stage 2“. 18 IETF RFC 3840: “Indicating User Agent Capabilities in the Session Initiation Protocol (SIP)“. 19 IETF RFC 3841: “Caller Preferences for the Session Initiation Protocol (SIP)“. 20 3GPP TS 22.087: “User-
38、to-User Signalling (UUS); Service description; Stage 1“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the terms 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 th
39、e 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) and the IMS/PS domain to transport the other media components. A CSI session can be created either by establishing first a CS call and subsequen
40、tly 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 is conceived as a single multimedia session. Multimedia IMS session: a multimedia session that uses only the IMS/PS domain to transport both r
41、eal-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, 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), w
42、hile 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 initiates 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
43、(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 present document, the following abbreviations apply: AS Application Server CSI Combination of CS and IMS services DTM Dual Transfer Mode IAM I
44、nitial Address Message CON Connect Message MRFC Media Resource Function; Control part MRFP Media Resource Function; Physical Part MSRP Message Session Relay Protocol RAT Radio Access Technology RTP Real-time Transfer Protocol ETSI ETSI TS 123 279 V14.0.0 (2017-05)83GPP TS 23.279 version 14.0.0 Relea
45、se 144 Overall requirements 4.1 General description The “combination of CS and IMS services“ (CSI) is essentially a combination of existing CS and IMS services, 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 sess
46、ion within one context to the user. To facilitate this, the following capabilities shall be provided: 1. Exchange of information related to the current radio 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
47、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. CSI 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 ori
48、gination 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 appli
49、cable to GERAN and UTRAN; - A CSI capable UE requires DTM capability (in case of GERAN access) and MultiRAB capability (in case of UTRAN access); - IMS networks and IMS UEs without CSI support should not be impacted; - CS core, PS core, xRAN are not to be impacted. Conclusively, changes should be restricted to the IMS elements and the UEs that support CSI for IMS; - Procedures connecting the IMS to the CS domain, to the PSTN and to other SIP networks, including other IMS networks should remain unchanged; - CS only UEs and PS onl
