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LTE MBMS: What does the use of tmgi and session Id ?

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LTE MBMS: What does the use of tmgi and session Id ?
posted Jul 27, 2014 by Ganesh

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TMGI stands for "Temporary Mobile Group Identity". While establishing each eMBMS session, BM-SC server provides provides a unique identifier i.e. TMGI to identify a MBMS session within the PLMN.
TMGI is a combination of "PLMN" + "Service Id" . As usual, PLMN is encoded by using 3 octets and service id is also 3 bytes long.

SessionId is an optional information which may be provided by BM-SC server at the time of session establishment.

answer Jul 27, 2014 by Vimal Kumar Mishra
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