A control apparatus comprising: obtaining means for obtaining subscriber information related to a subscriber in a private radio communication network; verifying means for performing authentication processing for a terminal apparatus requesting connection to the private radio communication network, based on authentication information included in the subscriber information, and verifying access authority for the terminal apparatus requesting the connection, based on information different from the authentication information included in the subscriber information when the authentication processing for the terminal apparatus requesting the connection is successful; registering means for obtaining subscriber information generated by a Subscriber Identity Module, SIM, provider, and registering the obtained subscriber information in a database included in a core network; and managing means for managing the subscriber information registered in the database, wherein the verifying means are adapted to perform the authentication processing for the terminal apparatus requesting the connection by using the authentication information included in the subscriber information registered in the database and the authentication information included in a connection request from the terminal apparatus requesting the connection, and when an attach request or a tracking area update request is received from the terminal apparatus requesting the connection, the verifying means are adapted to transmit, to the terminal apparatus requesting the connection, a response message with a predetermined value stored in a cause value when rejecting the connection request from the terminal apparatus requesting the connection, the information different from the authentication information included in the subscriber information is a term of validity for the subscriber information, and the managing means are adapted to delete the subscriber information satisfying a predetermined condition out of the subscriber information registered in the database. obtaining means for obtaining subscriber information related to a subscriber in a private radio communication network; verifying means for performing authentication processing for a terminal apparatus requesting connection to the private radio communication network, based on authentication information included in the subscriber information, and verifying access authority for the terminal apparatus requesting the connection, based on information different from the authentication information included in the subscriber information when the authentication processing for the terminal apparatus requesting the connection is successful; registering means for obtaining subscriber information generated by a Subscriber Identity Module, SIM, provider, and registering the obtained subscriber information in a database included in a core network; and managing means for managing the subscriber information registered in the database, wherein the verifying means are adapted to perform the authentication processing for the terminal apparatus requesting the connection by using the authentication information included in the subscriber information registered in the database and the authentication information included in a connection request from the terminal apparatus requesting the connection, and when an attach request or a tracking area update request is received from the terminal apparatus requesting the connection, the verifying means are adapted to transmit, to the terminal apparatus requesting the connection, a response message with a predetermined value stored in a cause value when rejecting the connection request from the terminal apparatus requesting the connection, the information different from the authentication information included in the subscriber information is a term of validity for the subscriber information, and the managing means are adapted to delete the subscriber information satisfying a predetermined condition out of the subscriber information registered in the database.