Patent ID: 8817700

Claim:
A method of preventing the use of a stolen user terminal through forced location re-registration, the method comprising: receiving information that a user terminal was stolen from a subscriber management server; making a mobile application part (MAP) cancel location request of the stolen user terminal to at least one of a mobile switching center (MSC) and a serving general packet radio service support node (SGSN) in response to receipt of the information of the stolen user terminal from the subscriber management server; and checking whether a user terminal is a stolen terminal when receiving a location registration approval request from at least one of the MSC and the SGSN for the user terminal after performing a MAP cancel location process in response to the MAP cancel location request, wherein the step of the checking whether a user terminal is a stolen terminal includes comparing, by an equipment identity register (EIR), data about the user terminal received from the at least one of the MSC and the SGSN with information about a list of stolen terminals stored in the EIR to determine whether the user terminal is the stolen terminal.