MBMS QoS: How an MBMS bearer's QoS differ from P2P bearer QoS ?

Question

Can anyone please explain MBSFN synchronization Area ,MBSFN area and MBSFN service area ?
How they are mapped to each other ?

When BMSC server initiates a service to broadcast, it provides service Id using the TMGI (temporary mobile group Id) and the area i.e MBMS service area. Once MME forwards this information to MCE, how MCE maps this received MBMS service area to MBSFN Area(s) ? How MCE decides on MCCH related BCCH configuration during the M2 Setup request ? In M2 setup request, eNodeB sends the list of serving MBMS service areas per cell to MCE but how MCE decides which cell is going to be part of a particular MBSFN Area. ?

Answer 1

Except few parameters like UE-AMBR and APN-AMBR, MBMS bearer has rest of QoS parameters defined for EPS. MBMS services serve multiple or group to user at the same time using same radio resources as compare to point to point bearer creation which consumes more radio resources

Each MBMS service is provided through MBMS bearer. Each cell has configured radio resources for PDSCH and PMCH channels . So in case, if multiple MBMS bearers have been already created to transfer different different multi cast data, eNodeB may take decision to establish a new MBMS bearer based on the ARP value of existing bearer.