Patent ID: 7965619

Claim:
A wireless communication system comprising: a base station including a plurality of antennas; and a plurality of mobile stations, the base station being configured to communicate with each of the mobile stations using a time division duplex spatial multiplex transmission protocol, each of the mobile stations including a transmission weight calculating unit configured to measure a condition of a transmission path between the mobile station and the base station based on a transmitted identifiable known signal and calculate a transmission weight based on the measured condition, and a known signal transmitting unit configured to transmit a first known pilot signal to the base station using the transmission weight, the base station including a scheduling unit configured to generate partial space information for each of the mobile stations based on the first known pilot signal received from the mobile stations, and, based on the partial space information, perform downstream scheduling to determine a downstream scheduling result specifying mobile stations concurrently receiving data and transmission beams used for downlink communications and upstream scheduling to determine an upstream scheduling result specifying mobile stations concurrently transmitting data and transmission beams used for uplink communications, and a scheduling result transmitting unit configured to transmit packet including the upstream scheduling result and a second known pilot signal to the mobile stations, and the transmission source mobile stations being further configured to receive the upstream scheduling result using a reception weight generated based on the second known pilot signal included in the packet, and transmit data based on the upstream scheduling result.