Patent ID: 7324475

Claim:
A radio communication apparatus associated with a plurality of radio communication terminals, the apparatus comprising: a plurality of transceiver units configured to transmit and receive radio signals to and from the radio communication terminals; a channel state estimating unit configured to estimate channel states between the radio communication terminals based on the radio signals received; and an assignment unit configured to simultaneously assign the transceiver units to a radio communication terminal of the radio communication terminals based on the channel states estimated, wherein the transceiver units comprise a plurality of antennas, a plurality of radio frequency conversion units, a plurality of modulation and demodulation units, a first switch group provided between the antennas and the radio frequency conversion units, and a second switch group provided between the radio frequency conversion units and the modulation and demodulation units; the transceiver units transmitting and receiving the radio signals by setting switches of the first switch group and the second switch group.