Patent ID: 8406754

Claim:
A base station (BS) apparatus having a plurality of antennas in a wireless communication system, the base station apparatus comprising: a calculator configured to calculate beam coefficient vectors to be applied to transmission signals to mobile stations in a first sector of the BS considering an interference to at least one second sector of the BS that is a neighbor sector to the first sector; a plurality of formers configured to perform beamforming for transmission signals to each mobile station within the first sector using the beam coefficient vectors, wherein each of a plurality of beamformed signals includes signals to be transmitted through transmission antennas of the first sector and signals to be transmitted through transmission antennas of the at least one second sector; a plurality of adders configured to add signals to be transmitted through the same transmission antenna among sector-based beamformed signals; and a scheduler configured to perform scheduling for the mobile stations without sector division and provide a scheduling result to a buffer, wherein the calculator is configured to receive the scheduling result from the buffer before calculating the beam coefficient vectors.