Patent ID: 8150469

Claim:
An adaptive array base station device having three or more transmission/reception devices each including at least one antenna element and transmission/reception control means for controlling transmission/reception of a radio signal via the antenna element, comprising: array antenna forming means for selecting at least two of the transmission/reception devices and combining the selected transmission/reception devices, to thereby sequentially form one array antenna; array antenna transmission control means, every time the array antenna forming means forms the array antenna, for transmitting a radio signal having a predetermined directivity pattern from the array antenna to each receiving antenna element which is the antenna element included in each of some or all of the transmission/reception device(s) other than the at least two transmission/reception devices forming the array antenna; array antenna communication performance measurement means for measuring a reception level of the radio signal received at each of some or all of the receiving antenna elements with respect to a transmission from each of the array antennas sequentially formed by the array antenna forming means, and calculating respective array antenna communication performance values, each indicating communication performance of each of the array antennas, based on the respective reception levels; and array antenna determination means for selecting an array antenna having the array antenna communication performance value satisfying a predetermined performance condition, based on some or all of the respective array antenna communication performance values generated by the array antenna communication performance measurement means, and determining a combination of the at least two transmission/reception devices forming the array antenna.