Patent ID: 8311516

Claim:
A system for maintaining broadcast information regardless of device replacement when a first Universal Subscriber Identity Module (USIM) card mounted in a first terminal having a first broadcasting chip is separated from the first terminal and is then mounted in a second terminal having a second broadcasting chip in a USIM unlock environment, the system comprising: a mobile communication information management server for receiving unique information of the second terminal and USIM-based subscriber information corresponding to the first USIM card from the second terminal through a registration message, and for determining and notifying that there has been a device replacement when the unique information of the second terminal and the subscriber information are different from each other; a broadcast information management server for making a request for modification of broadcast information related to the subscriber information upon receipt of the unique information of the second terminal and the subscriber information from the mobile communication information management server; and a Conditional Access System (CAS) for transmitting, in response to the request for modification of broadcast information by the broadcast information management server, to the second terminal, an Entitlement Management Message (EMM) with device change information that includes broadcast information to update information on the second broadcasting chip of the second terminal to information on the first broadcasting chip of the first terminal corresponding to the subscriber information, and to the first terminal, an EMM that includes information necessary to delete or terminate subscriber information on the first broadcasting chip in response to a different USIM card mounted in the first terminal.