Patent ID: 8527768

Claim:
A mobile station for use in a wireless network framework, the wireless network framework comprising a first wireless network and a second wireless network, the first wireless network comprising an access point, the second wireless network comprising a gateway apparatus and a base station, an IP security tunnel existing between the access point and the gateway apparatus, the access point storing an identification of the mobile station, the mobile station comprising: a storage module, being configured to store a master session key and the identification; a transmission/receiving module, being configured to transmit the master session key and a notification signal to the access point so that the access point transmits the master session key and the identification to the gateway apparatus via the IP security tunnel after the access point receives the notification signal, transmit a subscriber station basic capability request signal to the base station, and receive a subscriber station basic capability response signal from the base station after the transmission of the subscriber station basic capability request signal; and a process module, being configured to generate an authorization key according to the master session key and the identification, decrypt the subscriber station basic capability response signal according to the authorization key, and perform a handshake with the base station with the authorization key.