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TR 23.838 (SA2)
IMS Service Continuity enhancements –
Service, policy and interaction

ToC   3GPP‑Page   Help    
V9.0.0 (Wzip)  2009/06  51 p.


Rapporteur:  Mr. Zhang, Heng liang
See also:  ISC-related TS/TR

This TR intends to develop enhancements for Rel-8 IMS Service Continuity and solutions for mobility of media flows and control of a session between different devices under the same subscription (i.e. Inter-UE Transfer) to a state where they can be transferred to normative specifications, focusing on the following aspects:

For Inter-UE transfer:
  • Inter-UE Transfer scenarios for transferring/retrieval/addition/deletion of media flows in a Collaborative Session;
  • Inter-UE Transfer scenarios for establishment or continuation of a Collaborative Session while transferring control;
  • Transferring media flows to the target UE whilst keeping the Collaborative Session control in the source UE.
For IMS Service Continuity Enhancement:
  • Management of operator policy and user preferences;
  • Interaction and coexistence with underlying mobility mechanisms and corresponding policies;
  • Further capabilities for the support of mid-call services during session transfer, in addition to those defined in TS 23.292, TS 23.237 and TS 23.216;
  • Session Continuity for speech and video over CS.
IMS Service Continuity will be restricted to service continuity using IMS procedures, i.e. mobility mechanisms on the IP-CAN level are not within the scope of this document This document does not overlap with the underlying EPC and SRVCC features, even though there could be cross-references between the corresponding Technical Specifications.


 

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1  ScopeWord-p. 6
2  References
3  Definitions and abbreviationsWord-p. 7
4  Inter-UE Transfer
4.1  Architectural Requirements and Assumptions
4.2  Scenarios
4.3  Controller UE and Controllee UE operations for an existing Collaborative SessionUp
4.4  General Principles and Description
4.5  Architecture Reference ModelWord-p. 16
4.6  UE AwarenessWord-p. 23
4.7  Information of Collaborative SessionWord-p. 26
4.8  Execution of supplementary servicesWord-p. 27
5  Other IMS Service Continuity enhancements
5.1  General
5.2  Operator policy and user preferencesUp
5.3  Interaction and coexistence with underlying mobility mechanisms and corresponding policies
5.4  Support of mid-call services during session transferWord-p. 30
5.4.1  Architectural Requirements
5.4.2  Alternative 1: MSC Server enhancement to support mid-call services during session transfer
5.4.3  Alternative 2: Use of 24.008 CC TI to support mid-call services during session transfer
5.4.4  Alternative 3: Use of STI to support mid-call services during session transferWord-p. 43Up
5.4.5  Evaluation of the alternativesWord-p. 45
5.5  Session Continuity for speech and video over CSWord-p. 46
5.6  Architecture
6  Conclusion
A  List of IUT proceduresWord-p. 48
B  Change historyWord-p. 51

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