1、 ETSI TS 123 237 V14.2.0 (2017-05) Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; IP Multimedia Subsystem (IMS) Service Continuity; Stage 2 (3GPP TS 23.237 version 14.2.0 Release 14) TECHNICAL SPECIFICATION ETSI ETSI TS 123 237 V1
2、4.2.0 (2017-05)13GPP TS 23.237 version 14.2.0 Release 14Reference RTS/TSGS-0223237ve20 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 but non lucratif enregistr
3、e 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 present documen
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9、de Marks registered and owned by the GSM Association. ETSI ETSI TS 123 237 V14.2.0 (2017-05)23GPP TS 23.237 version 14.2.0 Release 14Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essent
10、ial 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 Secretariat. Latest updates
11、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 updates on the ETSI Web server)
12、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 identities, UMTS identities o
13、r 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 document “shall“, “shall not“,
14、“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 when used in direct citatio
15、n. ETSI ETSI TS 123 237 V14.2.0 (2017-05)33GPP TS 23.237 version 14.2.0 Release 14Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 9g3Introduction 9g31 Scope 10g32 References 10g33 Definitions, symbols and abbreviations . 12g33.1 Definitions 12g33.2 Abbrev
16、iations . 14g34 High level principles and architectural requirements . 14g34.1 Basic Assumptions . 14g34.1.0 General 14g34.1.1 PS-CS Access Transfer . 14g34.1.2 PS-PS Access Transfer . 15g34.1.3 Inter-UE Transfer 15g34.2 Architectural Requirements 16g34.2.1 General Requirements. 16g34.2.2 Access Tra
17、nsfer Requirements . 16g34.2.3 IUT Requirements 17g34.3 Service Continuity 19g34.3.1 Session Transfer concepts . 19g34.3.1.1 General 19g34.3.1.2 Access Transfer concepts 19g34.3.1.2.1 General Access Transfer concepts . 19g34.3.1.2.2 Access Transfer (PS CS) concepts . 19g34.3.1.2.2A MSC Server assist
18、ed mid-call feature 20g34.3.1.2.3 Co-existence of ICS UE and MSC Server assisted mid-call feature . 20g34.3.1.3 Inter-UE Transfer concepts . 21g34.3.1.3.1 General 21g34.3.1.3.2 Controller UE and Controllee UE operations 21g34.3.1.3.2.1 Overview . 21g34.3.2 Void 21g34.3.3 Information used for IMS Ser
19、vice Continuity 21g35 Architecture model and reference points 22g35.1 Overview 22g35.2 Reference Architecture for non emergency session . 23g35.2.1 General 23g35.2.2 Architecture when using ATCF enhancements. 23g35.3 Functional Entities 24g35.3.1 SCC AS . 24g35.3.2 IMS Service Continuity UE 25g35.3.
20、2.1 Access Transfer Functions 25g35.3.2.2 IUT Functions and Roles 26g35.3.2.2.1 Functions . 26g35.3.2.2.2 Controller UE Role 26g35.3.2.2.3 Controllee UE Role . 26g35.3.3 Emergency Access Transfer Function (EATF) . 27g35.3.4 Access Transfer Control Function (ATCF) 27g35.3.4.1 General 27g35.3.4.2 ATCF
21、 inclusion . 28g35.3.5 Access Transfer Gateway (ATGW) 28g3ETSI ETSI TS 123 237 V14.2.0 (2017-05)43GPP TS 23.237 version 14.2.0 Release 145.3.6 HSS . 28g35.3.7 MSC Server 28g35.4 Signalling and bearer paths for IMS Service Continuity 29g35.4.1 General 29g35.4.2 Sessions with PS media flow(s) 29g35.4.
22、2a Sessions with PS media flow(s) using ATCF . 29g35.4.3 Sessions with CS media 30g35.4.3a Sessions with CS media flow(s) using ATCF . 30g35.5 IUT Collaborative Sessions 30g35.6 Reference Architecture for SRVCC emergency session 31g36 Procedures and flows for Access Transfer . 32g36.0 Introduction 3
23、2g36.1 Registration 32g36.1.1 General 32g36.1.2 Registration using ATCF enhancements. 32g36.1.3 Registration: CS to PS - Single Radio 34g36.1.3.1 IMS Registration by UE 34g36.1.3.2 UE IMS Registration change update . 34g36.2 Origination and Termination 35g36.2.1 Origination 35g36.2.1.1 Origination P
24、rocedures 35g36.2.1.2 Originating sessions that use CS media 35g36.2.1.3 Originating sessions that use only PS media flow(s) 36g36.2.1.3a Originating sessions that use only PS media flow(s) - fallback to CS domain in pre-alerting phase 37g36.2.1.4 Originating sessions for (v)SRVCC that use ATCF enha
25、ncements 38g36.2.1.5 Originating sessions for CS to PS - Single Radio . 38g36.2.2 Termination. 39g36.2.2.1 Termination Procedures 39g36.2.2.2 Terminating sessions that use CS media . 39g36.2.2.3 Terminating sessions that use only PS media flow(s) . 40g36.2.2.3a Terminating sessions that use only PS
26、media flow(s) - fallback to CS domain in pre-alerting phase . 41g36.2.2.4 Terminating sessions over Gm where speech media is not accepted by the UE . 42g36.2.2.5 Terminating sessions for (v)SRVCC that use ATCF enhancements . 43g36.2.2.6 Terminating sessions for CS to PS - Single Radio 43g36.3 Access
27、 Transfer 44g36.3.1 Access Transfer Procedure . 44g36.3.1.1 Introduction . 44g36.3.1.2 Access Transfer Procedures 44g36.3.1.2a Access Transfer Procedures using ATCF enhancements 45g36.3.1.3 Enablement of Access Transfer procedures 45g36.3.1.3a Enablement of Access Transfer procedures using ATCF enha
28、ncements 46g36.3.1.4 Execution of Access Transfer procedures . 46g36.3.1.4a Execution of Access Transfer procedures using ATCF enhancements . 46g36.3.1.5 Remote Leg Update. 46g36.3.1.6 Source Access Leg Release . 47g36.3.1.7 Access Transfer Information for ATCF 47g36.3.2 Access Transfer Information
29、flows . 48g36.3.2.0 General 48g36.3.2.1 PS CS Access Transfer . 48g36.3.2.1.1 PS CS Access Transfer: PS to CS - Dual Radio . 48g36.3.2.1.1a PS CS Access Transfer: PS to CS Dual Radio with Session State Information 49g36.3.2.1.2 PS CS Access Transfer: CS to PS - Dual Radio . 51g36.3.2.1.2a PS CS Acce
30、ss Transfer: CS to PS Dual Radio with Session State Information 52g36.3.2.1.2b CS - PS Access Transfer: CS to PS - Dual Radio, incoming voice call in alerting phase . 52g36.3.2.1.2c CS - PS Access Transfer: CS to PS - Dual Radio, outgoing voice call in pre-alerting state or in alerting phase . 53g36
31、.3.2.1.2d PS - CS Access Transfer: PS to CS - Dual Radio, outgoing voice or video call in pre-alerting state or in alerting phase 53g36.3.2.1.2e PS - CS Access Transfer: PS to CS - Dual Radio, incoming voice call in alerting phase . 54g36.3.2.1.3 Subsequent Access Transfers 56g3ETSI ETSI TS 123 237
32、V14.2.0 (2017-05)53GPP TS 23.237 version 14.2.0 Release 146.3.2.1.4 PS CS Access Transfer: PS to CS Single Radio 56g36.3.2.1.4a PS CS Access Transfer: PS to CS Single Radio with Session State Information 57g36.3.2.1.4b PS to CS Access Transfer: PS to CS Single Radio; using I1 reference point . 59g36
33、.3.2.1.4c PS - CS Access Transfer: PS to CS - Single Radio, incoming voice or video call in alerting phase 61g36.3.2.1.4d PS - CS Access Transfer: PS to CS - Single Radio, outgoing voice or video call in pre-alerting state or in alerting phase . 62g36.3.2.1.4e PS - CS Access Transfer: PS to CS - Sin
34、gle Radio, voice and video 64g36.3.2.1.5 PS CS Access Transfer for voice and video, Dual Radio . 66g36.3.2.1.6 PS CS Access Transfer: PS to CS Dual Radio, mid-call service with an active speech and video session 67g36.3.2.1.7 PS CS Access Transfer: PS to CS Dual Radio, mid-call service with one inac
35、tive speech and video session . 67g36.3.2.1.7a PS - CS Access Transfer: PS to CS - Single Radio, mid-call service with an incoming waiting call in alerting phase 68g36.3.2.1.7b PS - CS Access Transfer: PS to CS - Single Radio, mid-call service with an outgoing call in pre-alerting state or in alerti
36、ng phase. 70g36.3.2.1.7c PS - CS Access Transfer: PS to CS - Single Radio, mid-call service with an incoming call in alerting phase and a held session . 72g36.3.2.1.8 PS - CS Access Transfer: Conferencing - for UEs not using ICS capabilities 74g36.3.2.1.9 PS CS Access Transfer: PS to CS Single Radio
37、 using ATCF enhancements 75g36.3.2.1.10 PS - CS Access Transfer: CS to PS - Single Radio . 78g36.3.2.2 PS - PS Access Transfer 81g36.3.2.2.1 PS-PS Access Transfer with full media transfer 81g36.3.2.2.2 PS-PS Access Transfer with partial media transfer . 82g36.3.2.2.3 PS-PS Access Transfer with full
38、media transfer for an incoming call in early dialog phase . 82g36.3.2.2.4 PS-PS Access Transfer with full media transfer for an outgoing call in early dialog phase 84g36.3.2.3 PS - PS in conjunction with PS - CS Access Transfer 85g36.3.2.3.1 PS - PS in conjunction with PS - CS Access Transfer: PS to
39、 CS for UEs not using ICS capabilities . 85g36.3.2.3.2 PS - PS in conjunction with PS - CS Access Transfer: CS to PS for UEs not using ICS capabilities . 87g36.3.2.3.3 PS PS in conjunction with PS - CS Access Transfer: PS to CS for UEs with ICS capabilities - Using Gm reference point . 87g36.3.2.3.4
40、 PS - PS in conjunction with PS - CS Access Transfer: CS to PS for UEs with ICS capabilities - Using Gm reference point . 89g36.3.2.3.5 PS PS in conjunction with PS CS Access Transfer: Active/Held sessions - Using Gm reference point . 89g36.3.2.3.6 PS PS in conjunction with PS CS Access Transfer: Ex
41、plicit Communication Transfer - Using Gm reference point 90g36.3.2.3.7 PS PS in conjunction with PS CS Access Transfer: Conferencing - Using Gm reference point . 90g36.3.2.3.8 PS PS in conjunction with PS CS Access Transfer: PS to CS using I1 reference point . 90g36.3.2.3.9 PS - PS in conjunction wi
42、th PS - CS Access Transfer: CS to PS - using I1 reference point . 92g36.3.2.3.10 PS - PS in conjunction with PS - CS Access Transfer: PS to CS for Active/Held sessions - using I1 reference point . 92g36.3.2.3.11 PS - PS in conjunction with PS - CS Access Transfer: CS to PS for Active/Held sessions -
43、 using I1 reference point . 93g36.3.3 Media Adding/Deleting 93g36.3.3.1 Local End Initiation case: Adding new PS media to existing CS session . 93g36.3.3.2 Local End Initiation case: Incorporating existing CS media in new IMS Session and Gm Service Control 94g36.3.3.3 Local End Initiation case: Addi
44、ng PS media to IMS session with CS media . 95g36.3.3.4 Remote End Initiation case: Adding new PS media to existing CS session 96g36.3.3.5 Remote End Initiation case: Incorporating existing CS media in new IMS Session and Gm Service Control . 97g36.3.3.6 Remote End Initiation case: Adding PS media to
45、 IMS session with CS media 98g36.3.3.7 Local End Initiation case Removing media from split CS and PS sessions . 99g36.3.3.8 Remote End Initiation case Removing media from split CS and PS sessions 100g36.3.3.9 Local End Initiation case: Adding new PS media to existing PS session 101g36.3.3.10 Remote
46、End Initiation case: Adding new PS media to existing PS session 101g36.3.3.11 Local End Initiation case: Removing media from split PS sessions . 101g3ETSI ETSI TS 123 237 V14.2.0 (2017-05)63GPP TS 23.237 version 14.2.0 Release 146.3.3.12 Remote End Initiation case: Removing media from split PS sessi
47、ons 101g36.3.4 Void 101g36.3.5 Service continuity for ICS UE using MSC Server assisted mid-call feature while maintaining CS media 101g36.4 Operator Policy and User Preferences 101g36.5 Execution of supplementary services . 102g36.5.1 General 102g36.5.2 Originating Identification Presentation (OIP)
48、. 102g36.5.3 Originating Identification Restriction (OIR) . 103g36.5.4 Terminating Identification Presentation (TIP) 103g36.5.5 Terminating Identification Restriction (TIR) 103g36.5.6 Communication Diversion (CDIV) . 103g36.5.7 Communication Hold (HOLD) . 103g36.5.8 Communication Barring (CB). 103g3
49、6.5.9 Message Waiting Indication (MWI) . 103g36.5.10 Conference (CONF) 103g36.5.11 Explicit Communication Transfer (ECT) . 104g36.5.12 Advice of Charge (AOC) 104g36.5.13 Closed User Groups (CUG) 104g36.5.14 Three-Party (3PTY) 104g36.5.15 Flexible Alerting (FA) 104g36.5.16 Communication Waiting (CW) . 104g36.5.17 Completion of Communications to Busy Subscriber (CCBS)/Completion of Communications by No Reply (CCNR) 104g36.5.18 Customized Alerting Tones (CAT) . 104g36.5.19 Malicious Communication IDentification (MCI
