Comparing the procedure of the UE in URA_PCH state in embodiment two with those in embodiment one, the only difference is Step 903, where Step 903 changing to Step 903 a: Step 903 a: if the random number generated in Step 901 is less than the probability factor comprised in MBMS access information, the UE initiates cell update procedure, i.e. sending cell update message to UTRAN, and then, if the