Patent ID: 7440757

Claim:
A handover method in a wireless communication system, comprising the steps of: transmitting, by a serving base station, a handover request message to a base station controller in response to a handover request of a mobile station; determining, by the base station controller, target base stations to which the mobile station can perform handover among target base stations in a list of neighbor base stations, and transmitting a handover response message including the determination result information to the mobile station via the serving base station; determining, by the mobile station, a target base station to which it will perform handover, and transmitting a message indicating that it will perform handover, to the base station controller via the serving base station; transmitting, by the base station controller, a confirm message indicating that the mobile station will perform handover, to the determined target base station, and establishing a tunnel to the target base station; and registering, by the mobile station, itself in the target base station.