Patent ID: 7797428

Claim:
A system for providing an Internet Protocol (IP)-based service in a communication system, comprising: a server for managing subscriber service capability information for providing services on a user-by-user basis using subscribed services, and providing service objects on a user-by-user basis according to the subscriber service capability information; and a terminal for activating a service object received from the server, wherein, before providing the service objects, the server sends, to the terminal, a message including version information of the service objects and a server authentication key, wherein the terminal authenticates the server according to the server authentication key received from the server, wherein the terminal transmits a version check request message to the server to determine whether the current service object is of a latest version, receives a version check response message including latest version information from the server, and decides whether to download the new service object using the version check response message, and wherein when the subscriber service capability information is changed, the server transmits a version changed notify message of the service object to the terminal, and upon receipt of a download request message in response to the version changed notify message from the terminal, the server transmits the service object to the terminal.