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TR 23.847 (SA2)
Enhancements to
IMS service functionalities
facilitating multicast bearer services

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V8.0.0 (Wzip)    2007/12    19 p.

Rapporteur:  Miss Zhu, Fiona
See also:  –

This TR analyzes the feasibility and applicability of using multicast bearers (e.g. MBMS) in the context of IMS-based applications. This study item captures the results of the technical considerations and solutions for transporting IMS services over multicast bearers with a focus on the possible enhancements to IMS functionalities and relevant charging, security and service provision procedures.

A brief summary of considerations include:
  • Signalling procedures of multicast enabled IMS services should be analyzed based on the grouped communication scenarios and possible optimisations to the delivery mechanisms should be investigated.
  • Charging and policy control procedures according to the PCC architecture.
  • Service provision procedures both in network elements and UEs.
  • Possible security requirements to multicast enabled IMS functionalities and bearer service entities.
  • Real-time QoS requirements e.g. delay, interruption.
  • UE capability requirements.


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