Patent ID: 7403777

Claim:
A diversity handover control method in a mobile communication system including a mobile station, a plurality of base stations, and a center connected to said plurality of base stations, said mobile communication system carrying out diversity handover in which said mobile station communicates with said plurality of base stations simultaneously, said diversity handover control method comprising the steps of: monitoring, at said mobile station, radio condition quality corresponding to a plurality of branches; selecting, at said mobile station, one or more addition branch candidates based on the monitored radio condition quality; arranging, at said mobile station, said addition branch candidates in order of the monitored radio condition quality; notifying, from said mobile station to said center, information on said plurality of branches including said addition branch candidates, said addition branch candidates being notified in the arranged order; and establishing, at said center, one or more communicating branches for the diversity handover by trying to establish those one or more communicating branches by using said notified addition branch candidates in the arranged order.