Patent ID: 7336953

Claim:
A method for performing a handover of a subscriber station at a request of a serving base station in a broadband wireless access communication system including the serving base station for providing a service to the subscriber station and a plurality of neighbor base stations being adjacent to the serving base station, the method comprises the steps of: receiving information on the neighbor base stations from the serving base station; measuring carrier-to-interference and noise ratios (CINRs) of frequency bandwidth signals from the neighbor base stations based on the information about the neighbor base stations; receiving a handover scan request message from the serving base station; transmitting to the serving base station a handover request message including information about the measured CINRs of the selected neighbor base stations satisfying a predetermined handover condition, in response to the handover scan request message; receiving, from the serving base station, a handover response message including information on at least one particular target base station among selected neighbor base stations, said at least one particular base station capable of supporting the handover of the subscriber station among the neighbor base stations; and performing the handover from the serving base station to one of the at least one target base stations; wherein the predetermined handover condition comprises a first handover condition, in which a CINR of a particular neighbor base station should not remain less than a minimum CINR for a maximum holding time and a second handover condition, in which a CINR of a particular neighbor base station should remain greater than a measured CINR of the serving base station for a minimum holding time.