| 摘要 |
A radio base station (BS2) comprises: a transmitter (1412) that transmits, via a plurality of transmission antennas, a radio signal to a first radio terminal having a plurality of reception antennas; a transmission directivity controller (1422) that controls directional beam, which is formed by the transmission antennas, on the basis of feedback information that is fed back from the first radio terminal; and an information acquiring unit (1421) that acquires control information to be used for directing the null points of the directional beam toward a second radio terminal that receives, as an interference signal, the foregoing radio signal during communication with another radio base station. The transmission directivity controller (1422) directs, based on the feedback information and control information, the directional beam toward the first radio terminal and the foregoing null points toward the second radio terminal.
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