Patent ID: 7184419

Claim:
A method of controlling a handover of a communication link, comprising: transmitting information for an uplink synchronous transmission from a radio network controller to a first base station and a second base station; reconfiguring a radio link between a mobile station and the second base station, based on the information for the uplink synchronous transmission; adjusting a base time for the uplink synchronous transmission of communication data by the mobile station to match the base time of an uplink synchronization scheme of the second base station when the mobile station moves from a first area corresponding to the first base station to a second area corresponding to the second base station; transmitting the information on the uplink synchronous transmission from the radio network controller to another radio netxvork controller, if the first and second base stations are controlled by different radio network controllers; reconfiguring the radio link based on the information for the uplink synchronous transmission transmitted from the radio network controlier; and adjusting an uplink synchronous timing of the mobile station for the uplink synchronous transmission, on the basis of the reconfigured radio link, to match an uplink synchronous timing of the base station controlled by the another radio network controller.