Patent ID: 8510802

Claim:
A method of operating a wireless communication system, comprising: in a network controller that serves a geographic area of a home wireless communication network where a wireless communication device is located, receiving an access request for the wireless communication device to access the home wireless communication network and transferring an authorization request for the wireless communication device to an authentication system; in the authentication system, receiving the authorization request, determining that the wireless communication device should not be allowed to access the home wireless communication network, and transferring an authentication response to the network controller indicating that the wireless communication device is not authorized to access the home wireless communication network; in the network controller, in response to receiving the authentication response, transferring an access response to the wireless communication device that indicates that the wireless communication device is not authorized to access the home wireless communication network; and in the wireless communication device, in response to receiving the access response, blocking the use of a Preferred Roaming List (PRL) by the wireless communication device to access nodes of the network controller.