3GPP Work Item description

This page contains informal descriptive text only.  See master WID page for further details.

Feature: MBMS User Service Extensions

It is expected, that the user equipment capabilities will evolve and that the minimal UE capability requirements increases and allow more flexible services for the release 7 time frame.  For instance, one limiting UE capability for MBMS release 6 was that the UE should avoid using interactive bearer resources or any other uplink bearer resources while receiving an MBMS transmission. A number of useful service functions become possible and need to be specified, if MBMS UEs may start using an uplink communication channel in parallel with an MBMS reception channel. Since MBMS is intended to serve large audience, the usage of the uplink resources must be controlled to avoid overload situations in the uplink and in infrastructure nodes.

Also OMA BAC-BCAST is currently preparing a Mobile Broadcast Service specification. MBMS is considered as one of their broadcast distribution systems. The MBMS User Services should be aligned with the OMA BAC-BCAST service enabler.

The objective of the work is to extend MBMS release 6 procedures and provide the required changes in the release7 specifications.  The intention is that MBMS Release 7 extensions provide backward compatibility to MBMS Release 6 terminals.

    §         MBMS User Service optimizations, whenever the gain justifies the changes.

    §         Enhanced services such as interactive services while consuming an MBMS stream and protecting the network against possible overload situations due to these enhanced services.

    §         Usage of interactive and streaming bearers for MBMS user service delivery, including bearer independent procedure.

    §         Alignment with OMA BCAST where appropriate.