Very interesting....

From the diagram,

Is the pay load delivered by MBMS GW directly to UE ?
How BM-SC will alert UEs ? By co-ordinating with HSS+MME ? Or on its own ?

I've missed this question. --;;

[Q1] Is the pay load delivered by MBMS GW directly to UE ?
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It's sent to UE via eNB.
(MBMS-GW broadcasts the MBMS packet (means the payload in your question) to eNBs over IP multicast.
Then, eNB broadcasts the MBMS packet to UEs through multicast traffic channel (MTCH) over radio link.)

[Q2] How BM-SC will alert UEs ? By co-ordinating with HSS+MME ? Or on its own ?
-->
Before sending MBMS data, BM-SC initiates the MBMS session start procedure ("MBMS Session Start Request" message: BM-SC -> MBMS-GW -> MME -> (MCE ->) eNB).
Upon receiving the “MBMS Session Start Request" message, the eNB alerts UEs by informing that there's control info for MBMS data being sent.

Thanks..

Is it possible that eMBMS service is available without attach to EPS?

 

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