Patent ID: 7450534

Claim:
A method for creating and assigning Temporary Moving Group Identifier (TMGI), comprising the steps of: a) sending a message to a serving GPRS Supporting Node (SGSN) When an LIE joining a Multimedia Broadcast/Multicast Service MBMS group; b) if a MBMS TMGI has been added into the SGSN records, the SGSN directly replying to the LIE with the TMGI corresponding to the service; c) if there is no record for this service in the SGSN, the SGSN sending a message to a Gateway GPRS Supporting Node (GGSN), and if the GGSN has the TMGI corresponding to this service, the GGSN sending it to the SGSN; d) if there is no record for this service in the GGSN, the GGSN creating a TMGI for the MBMS service and transfers it to the SGSN; e) the SGSN sending a TMGI received from the GGSN to a radio network controller (RNC); f) the RNC transmitting the TMGI to the LIE; and g) the UE receiving signal from the RNC by using the TMGI.