Patent ID: 8190124

Claim:
A communication network for authenticating a mobile client and for allowing the mobile client to communicate with a server as the mobile client roams from one communication cell to another communication cell, the network comprising: a first base station controller coupled to a first transceiver station, the first transceiver station defining a first communication cell; a second base station controller coupled to a second transceiver station, the second transceiver station defining a second communication cell; a third transceiver station defining a third communication cell, wherein the first base station controller is coupled to the third transceiver station; an authentication center coupled to the first base station controller, the authentication center authenticating the mobile client to access the first base station controller, wherein the authentication center is only coupled to the first base station controller via the first transceiver station; and an authentication interface coupled between the first base station controller and the second base station controller; wherein the authentication interface allows a credential of an authentication of the mobile client at the authentication center to be moved to the second base station controller as the mobile client roams from the first communication cell to the second communication cell.