TIA-1093-D-2016 Voice Call Continuity between IMS and Circuit Switched Systems.pdf

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19、 OF THE USE OF THE CONTENTS HEREOF, AND THESE CONTENTS WOULD NOT BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. 3GPP2 X.S0042-C v1.0 Revision History Revision Description of Changes Date Rev 0 v1.0 Initial Publication October 2007 Rev A v1.0 Generalized to include EUTRAN-HRPD inter-technology handoff

20、s August 2008 Rev B v1.0 DRVCC for IMS Emergency Calls December 2013 Rev C v1.0 SRVCC for IMS Calls December 2014 Rev D v1.0 eDRVCC December 2015 3GPP2 X.S0042-D v1.0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 4

21、8 49 50 51 52 53 54 55 56 57 58 59 60 i Contents Voice Call Continuity between IMS and Circuit Switched Systems CONTENTS List of Figures . vi! List of Tables viii! Foreword . ix! REVISION HISTORY x! 1! Introduction . 1! 1.1! Scope . 1! 1.2! References . 2! 1.2.1! Normative References 2! 2! Void . 4!

22、 3! Definitions, Symbols and Abbreviations 5! 3.1! Definitions 5! 3.1.1! Symbols and Abbreviations . 5! 4! Stage 2: Architecture and Flow Diagrams 8! 4.1! Architecture Reference Model 8! 4.2! Signaling Flows for Registration 11! 4.2.1! IMS Registration 11! 4.2.2! 1x CS Registration . 13! 4.2.3! Doma

23、in Availability Notification . 14! 4.3! Signaling Flows for Call Origination . 16! 4.3.1! IMS VoIP Call Origination with VCC AS Anchoring . 16! 4.3.2! CS Call Origination with VCC AS Anchoring 17! 4.3.2.1! WIN Based Solution . 17! 4.3.2.2! Non-WIN Based Solution . 20! 4.4! Signaling Flows for Call D

24、elivery 22! 4.4.1! Voice Call Delivery on 1x CS 22! 4.4.2! Voice Call Delivery on IMS . 26! 4.4.3! MDN Homed on 1x CS Redirected to IMS using WIN Triggers 28! 4.4.4! MDN Homed on IMS using Local Number Portability . 30! 4.4.5! MDN Homed on 1x CS Redirected to IMS without WIN support 31! 4.5! Domain

25、Transfer: HRPD VoIP-to-1x CS Voice 33! 4.5.1! HRPD VoIP-to-1x CS Voice DT . 37! 4.5.2! HRPD VoIP-to-1x CS voice DT (3GPP2 PD Indicator) 42! 4.6! Domain Transfer: WLAN VoIP-to-1x CS Voice . 46! 4.6.1! WLAN VoIP-to-1x CS Voice DT 50! 4.7! Domain Transfer: 1x CS Voice to WLAN . 55! 4.7.1! 1x CS Voice t

26、o WLAN DT 59!3GPP2 X.S0042-D v1.0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 Contents ii 4.8! Failure Scenarios . 61! 4.8.1! Failure Scenario for Domain Transfer- WLAN VoIP

27、-1x CS Voice 61! 4.8.2! Failure Scenario for Domain Transfer: 1x CS - WLAN VoIP . 63! 4.8.3! Service Invocation during Call Delivery 64! 4.9! Dual Radio Domain Transfer: IMS Emergency Call to 1x CS . 66! 4.9.1! Reference Architecture for IMS Emergency Session . 66! 4.9.2! IMS Emergency Call Originat

28、ion . 67! 4.9.3! Dual Radio IMS Emergency Call Domain Transfer (PS-to-CS) 68! 4.9.3.1! DRVCC for an IMS Emergency Call . 69! 4.9.3.2! Remote Leg Update 70! 4.9.4! Location Reconfiguration for Domain Transfer (PS to CS) . 71! 4.9.5! UE Location Determination After Domain Transfer 72! 4.10! Single Rad

29、io Domain Transfer: IMS Emergency Call to 1x CS 74! 4.10.1! Roles of Functional Elements for SRVCC Domain Transfer of an Emergency Call from the E-UTRAN to the 1xCS Domain 74! 4.10.1.1! SRVCC UE . 74! 4.10.1.2! 1xCS MSC 74! 4.10.1.3! MGCF . 74! 4.10.1.4! EATF . 74! 4.10.1.5! 1xCS IWS . 75! 4.10.1.6!

30、 MME . 75! 4.10.2! Information Flows for SRVCC Domain Transfer of an Emergency Call from the E-UTRAN to the 1xCS Domain . 76! 4.10.2.1! SRVCC for IMS Emergency Call: MSC plus MGCF 76! 4.10.2.2! SRVCC for IMS Emergency Call: MSC Enhanced with SIP Interface 79! 4.11! Single Radio Domain Transfer: IMS

31、Call to 1xCS 82! 4.11.1! Roles of Functional Elements for SRVCC Domain Transfer of a Call from the E-UTRAN to the 1xCS Domain . 82! 4.11.1.1! SRVCC UE . 82! 4.11.1.2! 1xCS MSC 82! 4.11.1.3! MGCF . 82! 4.11.1.4! VCC AS/ATCF . 82! 4.11.1.5! 1xCS IWS . 83! 4.11.1.6! MME . 83! 4.11.2! Information Flows

32、for SRVCC Domain Transfer of a Call from the E-UTRAN to the 1xCS Domain . 83! 4.11.2.1! SRVCC for IMS Call: MSC plus MGCF . 84! 4.11.2.2! SRVCC for IMS Call: MSC Enhanced with SIP Interface . 87! 4.12! Dual Radio Domain Transfer: Call Alerting to 1xCS . 89! 4.12.1! Call Alerting for Incoming Call .

33、90! 4.12.2! Call Alerting for Outgoing Call 92! 4.13! Dual Radio Domain Transfer: Supplementary Services to 1xCS . 94! 4.13.1! Call Hold . 94! 4.13.2! Call Waiting Notify 97! 4.13.3! Call Waiting Hold . 101! 4.13.4! Call Hold in 3WC . 105! 4.13.5! 3WC . 108! 3GPP2 X.S0042-D v1.0 1 2 3 4 5 6 7 8 9 10

34、 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 iii Contents 5! Stage 3: Procedures and Protocol 112! 5.1! Overview of VCC between the CS domain and the MMD 112! 5.1.1! General . 112! 5.1.2! Underl

35、ying Network Capabilities . 113! 5.1.3! URI and Address Assignments 113! 5.2! Functional entities . 114! 5.2.1! Introduction 114! 5.2.2! User Equipment (UE) . 114! 5.2.3! Application Server (AS) . 114! 5.2.4! Media Gateway Control Function (MGCF) . 114! 5.2.5! Emergency Access Transfer Function (EAT

36、F) 114! 5.3! Roles for Registration in the MMD 114! 5.3.1! Introduction 114! 5.3.2! VCC UE . 115! 5.3.2.1! Constructing SMS Message 115! 5.3.2.2! Processing SMS Acknowledgments . 116! 5.3.3! VCC AS 116! 5.3.4! S-CSCF . 117! 5.4! Roles for Call Origination 117! 5.4.1! Introduction 117! 5.4.2! VCC UE

37、. 117! 5.4.3! MSC . 117! 5.4.4! VCC AS 118! 5.4.4.1! Distinction of Requests Sent to the VCC AS . 118! 5.4.4.2! Call Origination in the MMD . 118! 5.4.4.3! Call Origination in the CS Domain Procedures Towards the WIN SCP 119! 5.4.4.4! Call Origination in the CS Domain Procedures Towards the MMD 120!

38、 5.5! Roles for Call Termination . 120! 5.5.1! Introduction 120! 5.5.2! VCC UE . 120! 5.5.3! MSC . 121! 5.5.4! VCC AS 121! 5.5.4.1! Distinction of Requests Sent to the VCC AS . 121! 5.5.4.2! Call Termination in the MMD 121! 5.5.4.3! Call Termination in the CS Domain . 122! 5.5.4.4! Call Termination

39、in the CS Domain Procedures Towards MMD 124! 5.6! Roles for Domain Transfer of a Call from the CS Domain to the MMD . 124! 5.6.1! Introduction 124! 5.6.2! VCC UE . 124! 5.6.3! VCC AS 125! 5.6.3.1! Distinction of Requests Sent to the VCC AS . 125! 5.6.3.2! Domain transfer in the MMD . 125! 5.6.4! MGC

40、F . 126! 5.7! Roles for Domain Transfer of a call from the MMD to the CS Domain 126!3GPP2 X.S0042-D v1.0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 Contents iv 5.7.1! Intro

41、duction 126! 5.7.2! VCC UE 126! 5.7.3! MSC 127! 5.7.4! VCC AS 127! 5.7.4.1! Distinction of SIP INVITE Requests Sent to the VCC AS 127! 5.7.4.2! Domain Transfer Procedures Towards the WIN SCP 127! 5.7.4.3! Domain Transfer in the MMD 128! 5.8! VCC Application Message Format . 129! 5.8.1! Message Types

42、 . 129! 5.8.1.1! Domain-Attachment-Status . 129! 5.9! Signaling Protocol for VCC Domain Transfer of IMS Emergency Call to 1x CS . 130! 5.9.1! Modifications to MAP Operations . 130! 5.9.1.1! Origination Request (J-STD-036-C Chapter 8, Section 2.2.1.8) . 130! 5.9.2! Modifications to MAP Parameters . 1

43、31! 5.9.2.1! MobileCallStatus (J-STD-036-C Chapter 8, Section 2.3.2.15) 131! 5.10! Signaling Procedures for DRVCC Domain Transfer of IMS Emergency Call to 1x CS . 132! 5.10.1! MSC Analyze MS Dialed Number (J-STD-036-C Chapter 8, Section 3.1.1) . 133! 5.10.2! Idle MS Origination (J-STD-036-C Chapter

44、8, Section 3.1.2) 134! 5.10.3! MSC Initiating an OriginationRequest for an Emergency Services Call (J- STD-036-C Chapter 8, Section 3.2.1) . 137! 5.10.4! MSC Initiating DRVCC Domain Transfer for an IMS Emergency Services Call (new Section 3.2.2 for J-STD-036-C Chapter 8) . 139! 5.10.4.1! MSC Initiat

45、ing DRVCC Access Transfer for an IMS Emergency Services Call (new Section 3.2.2.1 for J-STD-036-C Chapter 8) . 140! 5.10.4.2! MSC Notifying MPC of Domain Transfer (new Section 3.2.2.2 for J-STD-036-C Chapter 8) 141! 5.11! Signaling Procedures for SRVCC Domain Transfer of IMS Emergency Services Call

46、to 1x CS . 142! 5.11.1! MSC Receiving SRVCC Domain Transfer Request from MME (new Section 3.2.3 for J STD 036 C Chapter 8) 142! 5.12! Signaling Procedures for SRVCC Domain Transfer of IMS Call to 1x CS . 144! 5.12.1! Annex G: Signaling Procedures for SRVCC Domain Transfer of IMS Call to 1x CS . 144!

47、 5.13! Roles for DRVCC domain transfer of alerting call from the IMS to the CS domain . 146! 5.13.1! Introduction . 146! 5.13.2! DRVCC UE . 146! 5.13.2.1! Incoming call at alerting state . 146! 5.13.2.2! Outgoing call at alerting state . 146! 5.13.3! MSC . 146! 5.13.4! VCC AS . 146! 5.13.4.1! Incoming call at alerting state . 146! 5.13.4.2! Outgoing call at alerting state . 147! 5.14! Roles for DRVCC domain transfer of supplementary service from the IMS to the CS domain . 147! 5.14.1! Introduction . 147! 5.14.2! DRVCC UE . 147! 5.14.2.1! Call Hold . 147!