The method includes steps: (1) after current UE sends request for updating routing area to new SGSN, new SGSN obtains relevant context information of current UE from former SGSN; new SGSN determines whether self registers MBMS bearer service corresponding to context of current obtained MBMS UE on relevant GGSN already; if yes, executing step (2); otherwise, new SGSN carries out registration on relevant GGSN first, then executes step (2); (2) New SGSN and corresponding GGSN update MBMS UE context of current UE in interaction, and accomplish updating data information relevant to current UE in HLR. The method prevents improper charging from occurring effectively, providing better service for users. |