A method for triggering a registration procedure by a UE within a registration area of a wireless communication network is provided. The method includes receiving a TAI list in a registration accept message while performing a first registration procedure with the wireless communication network and determining when the UE is moved from a first cell in a first TAI belonging to a first PLMN to a second cell in a second TAI belonging to a second PLMN, determining that the UE is in an RRC inactive state, and automatically triggering a second registration procedure with the wireless communication network, in response to determining that the UE is moved from first cell in first TAI belonging to first PLMN to second cell in second TAI belonging to second PLMN.