Study on architectural enhancements for 5G multicast-broadcast services; Phase 2
This Technical Report studies and evaluates further enhancements to the 5G Multicast/Broadcast Architecture in order to provide the following features.
- Enabling UE's receiving Multicast MBS Session data in RRC Inactive state.
- Study feasible and efficient resource utilization for the same broadcast content to be provided to 5G MOCN network sharing scenarios (i.e. multiple CNs are connected to the same NG-RAN).
- Study whether and how to support on demand multicast MBS session triggered by AF, and efficient resource utilization via 5GC choosing multicast and/or unicast delivery for a certain service.
- Study whether and how to support group message delivery for capability-limited devices, including NEF enhancement, coexistence of existing power saving mechanisms and MBS.
- Study whether there are any identified performance issues for high number of public safety UEs, and if yes study necessary enhancements to 5MBS for that scenario.