LTE MBMS: How does charging works for eMBMS services ?

Question

What are all nodes involve for charging an eMBMS ? I am bit confused here.
In LTE point to point services, per UE uses information send from PCEF to OFCS or OCS. What about point to multipoint services?

Answer 1

BMSC does the charging for MBMS contents. It may charge for the users receiving the contents through MBMS bearer services or it charge to the content provider. BMSC supports both offline and online charging mechanism. BMSC has Ro interface with the OCS and Rf interface with OFCS. Like PGW, BMSC also does the charging in similar way.