Patent ID: 7489919

Claim:
A method for a wireless terminal to register a communication system, the communication system having a Public Land Mobile Network (PLMN) and at least one Wireless Local Area Network (WLAN), the wireless terminal having a PLMN access module and a WLAN access module, wherein the PLMN interconnects to the WLAN, the PLMN comprising a first base station and the WLAN comprising a first access point, and the method comprising the following steps: (A) assigning a user ID to the wireless terminal for registration of the PLMN; (B) establishing a direct PLMN connection between the wireless terminal and the PLMN to directly transmit the user ID via the PLMN access module to the PLMN through the first base station, and registering the wireless terminal to the PLMN with the user ID; (C) generating an authentication code from the registration at the PLMN, and transmitting the authentication code to the wireless terminal via the direct PLMN connection through the first base station; (D) the PLMN transmitting the authentication code to a WLAN via the interconnection therebetween; and (E) establishing a WLAN connection via the WLAN access module between the wireless terminal and the WLAN through the first access point by the authentication code.