Patent ID: 7742449

Claim:
A method for testing a handover function between cells covered by a plurality of base station radio apparatuses in a mobile communication system, the mobile communication system comprising a mobile station, the plurality of base station radio apparatuses each configured to perform communication with the mobile station, and a radio base station control apparatus configured to control transmission powers for the plurality of base station radio apparatuses, the method comprising: receiving a plurality of reception power levels measured by the mobile station, wherein each of the plurality of reception powers levels is associated with a different one of the plurality of base station radio apparatuses; calculating a difference between two of the plurality of reception power levels for two of the plurality of base station radio apparatuses; comparing the calculated difference with a predetermined threshold value; if the calculated difference is greater than the predetermined threshold: controlling transmission power of one of the two of the plurality of base station radio apparatuses so that the difference becomes equal to or smaller than the predetermined threshold value; and performing a handover function test between cells covered by the two of the plurality of base station radio apparatuses.