ETSI TS 124 237-2018 Universal Mobile Telecommunications System (UMTS) LTE IP Multimedia (IM) Core Network (CN) subsystem IP Multimedia Subsystem (IMS) service continuity Stage 3 (.pdf

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1、 ETSI TS 124 237 V15.3.0 (2018-06) Universal Mobile Telecommunications System (UMTS); LTE; IP Multimedia (IM) Core Network (CN) subsystem IP Multimedia Subsystem (IMS) service continuity; Stage 3 (3GPP TS 24.237 version 15.3.0 Release 15) TECHNICAL SPECIFICATION ETSI ETSI TS 124 237 V15.3.0 (2018-06

2、)13GPP TS 24.237 version 15.3.0 Release 15Reference RTS/TSGC-0124237vf30 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-Prfectur

3、e 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 document shall not be mod

4、ified without the prior written authorization of ETSI. In case of any existing or perceived difference in contents between such versions and/or in print, the only prevailing document is the print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat.

5、Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at https:/portal.etsi.org/TB/ETSIDeliverableStatus.aspx If you find errors in the present document, please s

6、end your comment to one of the following services: https:/portal.etsi.org/People/CommiteeSupportStaff.aspx Copyright Notification No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as authorized by written permissi

7、on 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. ETSI 2018. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are trademarks of ETSI registered

8、for the benefit of its Members. 3GPPTM and LTETMare trademarks 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. GSMand the GSM logo are trademarks registered and owned by the GSM Association. ETSI ETSI

9、 TS 124 237 V15.3.0 (2018-06)23GPP TS 24.237 version 15.3.0 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

10、 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 on the ETSI Web server (https

11、:/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 may be, or may become, essent

12、ial 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 right to use or reproduce any

13、 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 Generation Partnership Project

14、 (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, 3GPP and ETSI identities can b

15、e 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 Drafting Rules (Verbal forms for

16、 the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TS 124 237 V15.3.0 (2018-06)33GPP TS 24.237 version 15.3.0 Release 15Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword .

17、15g31 Scope 16g32 References 16g33 Definitions and abbreviations . 20g33.1 Definitions 20g33.2 Abbreviations . 23g34 Overview of IP Multimedia (IM) Core Network (CN) subsystem Service Continuity 23g34.1 General . 23g34.2 Underlying network capabilities . 25g34.2.1 General 25g34.2.2 PS-CS session con

18、tinuity, Single Radio . 25g34.2.3 PS to CS and CS to PS session continuity, dual radio access transfer 25g34.3 URI and address assignments . 25g34.4 Support of session continuity in enterprise scenarios . 26g34.5 Guidelines for use of media feature tags or feature capability indicators . 27g35 Funct

19、ional entities 27g35.1 Introduction 27g35.2 User Equipment (UE) . 27g35.3 Application Server (AS) . 27g35.4 MSC server . 27g35.5 EATF 29g35.6 Access Transfer Control Function (ATCF) 29g35.7 Access Transfer Gateway (ATGW) . 30g36 Roles for registration in the IM CN subsystem for service continuity .

20、30g36.1 Introduction 30g36.2 SC UE . 30g36.2.1 Distinction of requests 30g36.2.2 General 30g36.2.3 SC UE receiving the ATGW information for CS to PS SRVCC 31g36.3 SCC AS 31g36.3.1 General 31g36.3.2 Triggers for the SCC AS providing information to ATCF . 31g36.3.3 SCC AS providing the PS to CS SRVCC

21、related information to the ATCF 32g36.3.4 Triggers for the SCC AS providing information to MSC server 33g36.3.5 SCC AS providing the CS to PS SRVCC information to the MSC server . 34g36.4 MSC server . 34g36.4.1 Distinction of requests 34g36.4.2 General 34g36.4.3 MSC server receiving the MSC informat

22、ion for CS to PS SRVCC . 34g36.5 Access Transfer Control Function (ATCF) 35g36.5.1 Distinction of requests 35g36.5.2 Registration related procedures in the ATCF . 35g36.5.3 ATCF receiving the SRVCC-related information . 37g36.5.4 ATCF sending the ATGW information for CS to PS SRVCC . 38g36.5.5 ATCF

23、receiving the UE information for CS to PS SRVCC . 38g36A Roles for General Capabilities . 38g36A.1 Introduction 38g36A.2 UE roles 38g36A.2.1 Operator policy enforcement 38g3ETSI ETSI TS 124 237 V15.3.0 (2018-06)43GPP TS 24.237 version 15.3.0 Release 156A.2.2 Signalling elements . 39g36A.2.2.1 Common

24、 SIP message set up procedures 39g36A.2.2.2 SIP INVITE request 39g36A.3 ATCF 40g36A.3.1 SRVCC information bound to the registration path 40g36A.4 SCC AS 40g36A.4.1 Common SIP message set up procedures . 40g36A.4.2 SIP INVITE request 40g36A.4.3 SIP INVITE responses towards the SC UE 41g36A.4.3A SIP I

25、NVITE responses towards the MSC server 43g36A.4.4 Handling of OMR specific attributes 43g36A.4.5 Target refresh request for a dialog and associated responses 44g36A.4.6 Rejecting malicious SIP REFER requests from remote UE . 44g36A.4.7 Protecting from malicious SIP INFO requests with remote leg info

26、rmation from remote UE . 45g36A.4.8 Precondition and access transfer . 45g36A.5 SDP media description conflict between target and remote access leg 45g36A.6 Indicating traffic leg . 46g36A.6.1 The SCC AS server procedure for indicating traffic leg . 46g36A.6.2 The MSC server procedure for indicating

27、 traffic leg 46g36A.6.3 The ATCF server procedure for indicating traffic leg 46g36A.7 MSC server . 46g36A.7.1 Precondition and access transfer . 46g37 Roles for call origination for service continuity . 47g37.1 Introduction 47g37.2 SC UE . 47g37.2.1 General 47g37.2.2 Additional procedures with MSC s

28、erver assisted mid-call feature . 47g37.3 SCC AS 47g37.3.1 Distinction of requests sent to the SCC AS 47g37.3.2 Call origination procedures at the SCC AS 48g37.3.3 Subscription related procedures in the SCC AS . 48g37.4 EATF 49g37.4.1 Distinction of requests sent to the EATF 49g37.4.2 Call originati

29、on procedures at the EATF 49g37.5 Access Transfer Control Function (ATCF) 50g37.5.1 Distinction of requests 50g37.5.2 Call origination procedures in the ATCF 51g37.5.2.1 General 51g37.5.2.2 Sessions originated in PS domain . 51g37.5.2.3 Sessions originated in CS domain . 52g37.5.3 Procedures in the

30、ATCF for originating requests not related to a call 53g37.6 MSC server . 53g37.6.1 Call origination procedures . 53g38 Roles for call termination for service continuity 54g38.1 Introduction 54g38.2 SC UE . 54g38.3 SCC AS 55g38.3.1 Distinction of requests sent to the SCC AS 55g38.3.2 Call termination

31、 procedures in the SCC AS . 55g38.4 Access Transfer Control Function (ATCF) 57g38.4.1 Distinction of requests 57g38.4.2 Call termination procedures in the ATCF . 57g38.4.2.1 General 57g38.4.2.2 Sessions terminated in PS domain 58g38.4.2.3 Sessions terminated in CS domain 58g38.5 MSC server . 60g38.5

32、.1 Distinction of requests 60g38.5.2 Call termination procedures 60g38.5.2.1 SIP INVITE request from home network 60g38.5.2.2 SIP INVITE request from ATCF 60g3ETSI ETSI TS 124 237 V15.3.0 (2018-06)53GPP TS 24.237 version 15.3.0 Release 159 Roles for PS-CS access transfer . 61g39.1 Introduction 61g39

33、.1A Additional procedures with MSC Server assisted mid-call feature 61g39.2 SC UE . 62g39.2.0 General 62g39.2.1 SC UE not using ICS procedures for PS to CS access transfer . 62g39.2.1AAA SC UE not using ICS procedures for PS to CS access transfer of emergency session . 64g39.2.1AA SC UE using ICS pr

34、ocedures for PS to CS access transfer . 64g39.2.1A SC UE procedures for PS to CS access transfer with MSC server assisted mid-call feature 65g39.2.1B SC UE procedures for PS to CS access transfer with MSC server assisted mid-call feature for speech and video session 68g39.2.2 SC UE procedures for CS

35、 to PS access transfer . 69g39.2.2.1 Distinction of request 69g39.2.2.2 SC UE procedure for transferring the first CS call 69g39.2.3 SC UE procedures for CS to PS access transfer with MSC server assisted mid-call feature 70g39.2.4 SC UE procedures for selecting a session in an early dialog phase to

36、be transferred using PS to CS dual radio access transfer procedure . 71g39.2.5 SC UE procedures for CS to PS dual radio access transfer of calls in an early phase 72g39.2.5.1 Conditions for CS to PS dual radio access transfer of calls in originating pre-alerting or in the alerting phase 72g39.2.5.2

37、SC UE procedure for CS to PS dual radio access transfer of calls in originating pre-alerting or in the alerting phase 73g39.2.5.3 SC UE procedures for transferring an additional CS session in an early phase 73g39.3 SCC AS 75g39.3.0 General 75g39.3.1 Distinction of requests sent to the SCC AS 75g39.3

38、.2 SCC AS procedures for PS to CS access transfer . 75g39.3.2A SCC AS procedures for PS to CS access transfer with MSC server assisted mid-call feature . 78g39.3.3 SCC AS procedures for CS to PS access transfer . 82g39.3.4 SCC AS procedures for CS to PS access transfer with MSC server assisted mid-c

39、all feature . 84g39.3.5 SCC AS procedures for PS to CS dual radio access transfer of calls in an early dialog phase . 86g39.3.5.1 Conditions for selecting a sessions in an early dialog phase . 86g39.3.5.2 SCC AS procedures for PS to CS dual radio access transfer of a originating session in the alert

40、ing phase 87g39.3.5.3 SCC AS procedures for PS to CS dual radio, access transfer of a originating session in the pre-alerting phase 89g39.3.5.4 SCC AS procedures for PS to CS dual radio access transfer of an additional session in an early dialog phase. 90g39.3.5.5 SCC AS procedures for PS to CS dual

41、 radio access transfer of a terminating session in the alerting phase 92g39.3.6 Removal of non-transferred audio media components and release of source access legs. 93g39.3.7 SCC AS procedures for CS to PS dual radio access transfer for calls in an early phase 93g39.3.7.1 Conditions for transferring

42、 dialog(s) in the originating pre-alerting or the alerting dialog phase . 93g39.3.7.2 SCC AS procedures for CS to PS dual radio access transfer for originating calls in pre-alerting phase or in alerting phase on the originating side . 94g39.3.7.3 SCC AS procedures for CS to PS dual radio access tran

43、sfer for a call in the alerting phase on the terminating side . 96g39.3.7.4 SCC AS procedures for PS to CS dual radio access transfer of an additional session in an early dialog phase. 97g39.4 MSC server enhanced for ICS 99g39.4.1 Void 99g39.4.1A Void 99g39.5 PS to CS session continuity with MSC ser

44、ver assisted mid-call feature 99g39.6 PS to CS session continuity with MSC server assisted mid-call feature for speech and video session 102g39.7 MSC procedures for PS to CS dual radio access transfer of calls in an early phase 103g39.8 MSC server enhanced for dual radio access transfer using a SIP

45、interface 104g39.8.1 General 104g39.9 EATF 105g39.9.1 EATF procedures for PS to CS session continuity, dual radio session transfer of emergency session . 105g310 Roles for PS-PS access transfer 106g310.1 Introduction 106g3ETSI ETSI TS 124 237 V15.3.0 (2018-06)63GPP TS 24.237 version 15.3.0 Release 1

46、510.2 SC UE . 106g310.2.0 General 106g310.2.1 Full session transfer 106g310.2.1A Void 110g310.2.2 Partial session transfer 110g310.2.3 Void 111g310.3 SCC AS 111g310.3.1 Distinction of requests sent to the SCC AS 111g310.3.2 PS to PS access transfer procedures at the SCC AS . 111g310.3.3 Void 116g310

47、.3.4 S-CSCF releasing the source access leg during PS to PS access transfer . 116g310.3.5 P-CSCF releasing the source access leg during PS to PS access transfer . 116g310.3.6 P-CSCF releasing early dialog during PS to PS access transfer . 116g311 Roles for PS-PS access transfer in conjunction with P

48、S-CS access transfer 117g311.1 Introduction 117g311.2 SC UE . 117g311.2.1 SC UE procedures for PS to PS+CS access transfer . 117g311.2.1.1 General 117g311.2.1.2 SC UE procedures for PS to PS+CS access transfer using ICS 117g311.2.1.3 SC UE procedures for PS to PS+CS access transfer not using ICS 118

49、g311.2.1.4 SC UE procedures for PS to PS+CS access transfer not using ICS with MSC server assisted mid-call feature . 118g311.2.2 SC UE procedures for PS+CS to PS access transfer . 119g311.2.2.1 General 119g311.2.2.2 SC UE procedures for PS+CS to PS access transfer using ICS 119g311.2.2.3 SC UE procedures for PS+CS to PS access transfer not using ICS 119g311.3 SCC AS 120g311.3.1 Distinction of requests sent to the SCC AS 120g311.3.2 SCC AS procedures for PS to PS+CS access transfer 120g311.3.3 SCC AS procedures for PS+CS to PS access transfer 120g312 Roles for PS-CS access tr

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