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TS 23.237
IMS Service Continuity

3GPP‑Page   ETSI‑search   eToC↓   LoFT↓   CONTENT →
V18.0.0 (PDF)  2024/03  192 p.
V17.0.0  2022/03  192 p.
V16.4.0  2020/06  192 p.
V15.2.0  2019/09  185 p.
V14.2.0  2016/12  183 p.
V13.1.0  2015/12  172 p.
V12.10.0  2015/12  172 p.
V11.11.0  2015/12  171 p.
V10.13.0  2015/12  158 p.
V9.10.0  2012/12  86 p.
V8.7.0  2010/03  42 p.
Rapporteur:
Mr. Song, Jae seung
LG Electronics Inc.
3GPP 23.237 - IMS Service Centralization and Continuity Reference Architecture when using ATCF

essential Table of Contents for  TS 23.237  Word version:  18.0.0

each title, in the "available" or "not available yet" area, links to the equivalent title in the CONTENT
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List of Figures and Tables

Figure 5.2.2-1IMS Service Centralization and Continuity Reference Architecture when using ATCF enhancements
Figure 5.4.2-1Signalling and bearer paths for sessions with PS media
Figure 5.4.2a-1Signalling and bearer paths for sessions with PS media using ATCF
Figure 5.4.3a-1Signaling and bearer paths for sessions with CS media using ATCF
Figure 5.5-1Collaborative Session Signalling and Bearer architecture
Figure 6.1.2-1IMS Registration using ATCF enhancements
Figure 6.1.3.2-1Subscription to UE's IMS registration status
Figure 6.2.1.2-1Originating session that uses CS media
Figure 6.2.1.3-1Originating session that uses only PS media
Figure 6.2.1.3a-1Originating session that uses only PS media - fallback to CS domain in pre-alerting phase
Figure 6.2.1.4-1Originating session that uses only PS media (ATCF in signalling path).
Figure 6.2.1.5-1Originating call setup over CS through ATCF
Figure 6.2.2.2-1Terminating session that uses CS media
Figure 6.2.2.3-1Terminating session that uses only PS media
Figure 6.2.2.3a-1Terminating session that uses only PS media - fallback to 2/3G in pre-alerting phase
Figure 6.2.2.5-1Terminating session that uses only PS media (ATCF in signalling path)
Figure 6.2.2.6-1Terminating call setup over CS through ATCF
Figure 6.3.1.5-1Remote Leg Update
Figure 6.3.1.5-2Remote Leg Update
Figure 6.3.1.7-1Access Transfer Information provided to ATCF from SCC AS
Figure 6.3.2.1.1-1PS - CS Access Transfer: PS to CS - Dual Radio
Figure 6.3.2.1.1a-1PS - CS Access Transfer: PS to CS - Dual Radio with Session State Information
Figure 6.3.2.1.2-1PS - CS Access Transfer: CS to PS - Dual Radio
Figure 6.3.2.1.2a-1CS to PS Access Transfer - Dual Radio with Session State Information
Figure 6.3.2.1.2d-1PS-CS: PS to CS - Dual Radio, outgoing voice or video call in alerting phase
Figure 6.3.2.1.2e-1PS-CS: PS to CS - Dual Radio, incoming voice or video call in alerting phase
Figure 6.3.2.1.4-1PS-CS: PS to CS - Single Radio
Figure 6.3.2.1.4a-1PS-CS: PS to CS - Single Radio with Session State Information
Figure 6.3.2.1.4b-1PS-CS: PS to CS - Single Radio; using I1 reference point
Figure 6.3.2.1.4c-1PS-CS: PS to CS - Single Radio, incoming voice or video call in pre-alerting or alerting phase
Figure 6.3.2.1.4d-1PS-CS: PS to CS - Single Radio, outgoing voice or video call in pre-alerting or in alerting phase
Figure 6.3.2.1.4e-1Information flow for voice and video transfer from PS to CS- single radio
Figure 6.3.2.1.5-1Information flow for voice and video transfer from PS to CS
Figure 6.3.2.1.6-1PS to CS with one active speech and video session, using SCUDIF
Figure 6.3.2.1.7-1PS to CS with one inactive speech and video session, using SCUDIF
Figure 6.3.2.1.7a-1PS-CS: PS to CS - Single Radio, mid-call service with an incoming waiting call in alerting phase
Figure 6.3.2.1.7b-1PS-CS: PS to CS - Single Radio, mid-call service with an outgoing call in pre-alerting or in alerting phase
Figure 6.3.2.1.7c-1PS-CS: PS to CS - Single Radio, mid-call service with an incoming call in alerting phase
Figure 6.3.2.1.9.1-1PS to CS Access Transfer when using ATCF enhancements and media anchored.
Figure 6.3.2.1.9.2-1PS to CS access transfer
Figure 6.3.2.1.10-1CS to PS - Single Radio procedures with CS media anchored in ATGW
Figure 6.3.2.1.10-2CS to PS - Single Radio procedures without CS media anchored in ATGW
Figure 6.3.2.2.1-1Information flow for PS-PS Access Transfer
Figure 6.3.2.2.3-1PS-PS Access Transfer with full media transfer incoming call in early dialog phase
Figure 6.3.2.2.4-1PS-PS Access Transfer with full media transfer outgoing call in early dialog phase
Figure 6.3.2.3.1-1PS-PS in conjunction with PS-CS Access Transfer: PS to CS
Figure 6.3.2.3.2-1PS-PS in conjunction with PS-CS Access transfer: CS to PS
Figure 6.3.2.3.3-1PS-PS in conjunction with PS-CS Access transfer: PS to CS for UEs with ICS capabilities
Figure 6.3.2.3.5-1PS-PS in conjunction with PS-CS Access transfer: Active/Held sessions
Figure 6.3.2.3.8-1PS-CS in conjunction with PS-CS Access Transfer: PS to CS access - using I1 reference point
Figure 6.3.2.3.10-1PS - PS in conjunction with PS - CS Access Transfer: PS to CS for Active/Held sessions - using I1 reference point
Figure 6.3.2.3.11-1PS - PS in conjunction with PS - CS Access Transfer: CS to PS for Active/Held sessions - using I1 reference point
Figure 6.3.3.1-1Local End Initiation case: Adding new PS media to existing CS session
Figure 6.3.3.2-1Local End Initiation case: Incorporating existing CS media in new IMS Session and Gm Service Control Signalling Path
Figure 6.3.3.3-1Local End Initiation case: Adding PS media to IMS session with CS media
Figure 6.3.3.4-1Remote End Initiation case: Adding new PS media to existing CS session
Figure 6.3.3.5-1Remote End Initiation case: Incorporating existing CS media in new IMS Session and Gm Service Control Signalling Path
Figure 6.3.3.6-1Remote End Initiation case: adding PS media to IMS session with CS media
Figure 6.3.3.7-1Local End Initiation case - Removing media from split CS and PS sessions
Figure 6.3.3.8-1Remote End Initiation case - Removing media from split CS and PS sessions
Figure 6a.2.1-1Establish Collaborative Session by transferring media
Figure 6a.2.2-1Flow for Collaborative Session establishment with new media flow on another UE
Figure 6a.2.3-1Establishment of Collaborative Session upon Originating IMS Session Setup
Figure 6a.2.4-1Establishment of Collaborative Session upon Terminating IMS Session Setup
Figure 6a.3.1.1-1Controller UE initiated media transfer from Controller UE to Controllee UE belonging to the same IMS subscription
Figure 6a.3.1.2-1Transferring media from Controller UE to Controllee UE belonging to different IMS subscriptions
Figure 6a.3.2-1Controller UE initiated media transfer from Controllee UE to Controller UE
Figure 6a.3.3.1-1Controller UE initiated media transfer from Controllee UE to another Controllee UE (Controller and Controllee UEs belong to the same IMS subscription)
Figure 6a.3.3.2-1Controller UE initiated media transfer from Controllee UE to another Controllee UE (Controller and Controllee UEs belong to different IMS subscriptions)
Figure 6a.3.4-1Controllee initiated Transfer of media from Controllee UE to another Controllee (Controller and Controllee belong to different IMS subscriptions)
Figure 6a.4.1-1Controller UE initiated add new media On Controller UE
Figure 6a.4.2.1-1Controller UE initiated add new media on Controllee UE belonging to the same IMS subscription
Figure 6a.4.2.2-1Adding media by Controller UE to Controllee UE belonging to different IMS subscription
Figure 6a.4.3-1Controller UE Initiated Media release - media on Controller UE
Figure 6a.4.4.1-1Controller UE Initiated Media release - media flow on Controllee UE (Controller and Controllee belong to the same IMS subscription)
Figure 6a.4.4.2-1Controller initiated Release of media from Controllee UE (Controller and Controllee belong to different IMS subscriptions)
Figure 6a.4.4a.1-1Controller UE initiated media modify on a Controllee UE belonging to the same IMS subscription
Figure 6a.4.4a.2-1Controller UE initiated media modify on a Controllee UE belonging to different IMS subscription
Figure 6a.4.5-1Controllee UE initiated release media flow on itself
Figure 6a.4.6.1-1Controllee UE initiated modify media flow on itself (same IMS subscription)
Figure 6a.4.6.2-1Controllee UE initiated media modify on itself (different IMS subscriptions under the same operator)
Figure 6a.4.6a-1Controllee initiated addition of media to another Controllee UE (Controller and Controllees belong to different IMS subscriptions)
Figure 6a.4.7-1Remote party initiated add new media
Figure 6a.4.8-1Remote party initiated release media
Figure 6a.4.9-1Remote party initiated media modification
Figure 6a.4a.1-1Controller UE initiated transfer of Collaborative Session Control
Figure 6a.4a.2-1Controller UE initiated transfer of Collaborative Session Control with transfer of media flow
Figure 6a.4a.3-1Collaborative Session handling upon loss of Collaborative Session Control
Figure 6a.4a.3a-1Transfer of Collaborative Session Control with media flow(s) upon loss of Collaborative Session control
Figure 6a.4a.5-1Transfer of Collaborative Session Control initiated by the target UE
Figure 6a.5.1-1Controller UE initiated Collaborative Session release
Figure 6a.5.2-1Remote Party Initiated Release Collaborative Session
Figure 6a.6.1-1Inter-UE transfer without establishing Collaborative Session - initiated by the source UE
Figure 6a.6.2-1Inter UE Transfer initiated by UE not participating in the session - no Collaborative Session established
Figure 6a.7.7.1-1Controller UE invoking the HOLD service on the media flow on a Controllee UE
Figure 6a.8.2-1Inter-UE Transfer target discovery based on IMS registration
Figure 6a.8.3.2-1Discovery of ongoing session information on other UE(s) belonging to the same IMS subscription
Figure 6a.8.3.3-1Discovery of ongoing session information on other UE(s) belonging to different IMS subscription
Figure 6a.9.1.1-1Inter-UE Transfer initiated by UE not participating in the Collaborative Session
Figure 6a.9.1.2-1Inter-UE Transfer initiated by Controllee UE in ongoing Collaborative Session
Figure 6a.9.1.3-1IUT solicited by a target UE without prior information about existing sessions
Figure 6a.9.2.1-1Establish Collaborative Session by target UE initiated transferring media
Figure 6a.9.2.2-1Inter UE Transfer initiated by target UE not participating in the Collaborative Session - media on the Controllee UE
Figure 6a.10.1-1Replicating media in network from Controller UE to another UE belonging to same IMS subscription
Figure 6a.10.2-1Replicating media in network from Controller UE to another UE belonging to different IMS subscription
Figure 6a.10.3-1Replicating media in network from Controller UE to another UE belonging to same IMS subscription - pull mode
Figure 6a.10.4-1Replicating media in network from Controller UE to another UE belonging to different IMS subscription - pull mode
Figure 6a.11.1-1Session replication initiated by target UE
Figure 6a.11.2-1Session replication initiated by source UE
Figure 6a.11.3-1Session replication initiated by source UE, different subscriptions
Figure 6a.11.4-1Session replication initiated by target UE, different subscriptions
Figure 6c.1-1UE initiating an emergency session in IMS
Figure 6c.2.1-1IMS level Call flow for SRVCC for IMS emergency session with E-STN-SR with a single EATF instance
Figure 6c.2.2-1IMS level Call flow for SRVCC for IMS emergency session in early dialogue phase (i.e. pre-alerting or alerting) with E-STN-SR with a single EATF instance
Figure 6c.2.3.1-1IMS level Call flow for SRVCC for IMS emergency session with E-STN-SR with support of multiple EATF instances by forking
Figure 6c.2.3.2-1IMS level Call flow for SRVCC for IMS emergency session with E-STN-SR with support of multiple EATF instances by redirection
Figure 6c.2.4.1-1IMS level Call flow for SRVCC for IMS emergency session in early dialogue phase (i.e. pre-alerting or alerting) with support of multiple EATF instances by forking
Figure 6c.2.4.2-1IMS level Call flow for SRVCC for IMS emergency session in early dialogue phase (i.e. pre-alerting or alerting) with support of multiple EATF instances by redirection
Figure 6d.1-1UE initiating an emergency session in IMS
Figure 6d.2-1IMS level Call flow for DRVCC for IMS emergency session with E-STN-DR
Table A.1-1Controller UE and Controllee UE operations
Figure B.2.1-1Re-negotiation method towards the remote end
Figure B.2.2.1-1codec inquiry prior to session transfer
Figure C.2-1IMS Service Centralization and Continuity Reference Architecture when using ATCF enhancements in the HPLMN
Figure C.3-1PS to CS access transfer

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