Patent ID: 8548384

Claim:
A mobile station, comprising: an interference determination unit configured to receive a pilot signal from each of a plurality of base stations, and determine an effective interference based on the pilot signal; and a feedback unit configured to feed back channel information of a channel to a service base station, the channel being between the mobile station and a base station transmitting the pilot signal determined as the effective interference, from among the plurality of base stations, wherein the plurality of base stations receives the channel information from a plurality of mobile stations comprising the mobile station, and transmits the received channel information to a network control apparatus, wherein the network control apparatus generates beamforming information associated with an interference alignment, based on a number of effective interferences received at the plurality of mobile stations, and the channel information, and transmits the beamforming information to the plurality of base stations, and wherein each of the plurality of base stations transmits a signal to the plurality of mobile stations based on the beamforming information.