Adaptive Array Base Station Device and Adaptive Array Base Station Device Control Method

A control method for 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:

• an array antenna forming step of selecting at least two of the transmission/reception devices and combining the selected transmission/reception devices, to thereby sequentially form one array antenna;
• an array antenna transmission control step, every time the array antenna is formed at the array antenna forming step, 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;
• an array antenna communication performance measurement step of 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 at the array antenna forming step, 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
• an array antenna determination step of 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 at the array antenna communication performance measurement step, and determining a combination of the at least two transmission/reception devices forming the array antenna.

An adaptive array base station device for carrying out radio communication with each of a plurality of mobile station devices, selectively using at least three antenna elements, comprising:

• array antenna forming means for selecting at least two of the antenna elements and combining the selected antenna elements, to thereby sequentially form one array antenna;
• array antenna communication performance measurement means, every time the array antenna forming means forms the array antenna, for measuring communication performance of the array antenna, and calculating respective array antenna communication performance values, each indicating communication performance of each of the array antennas, based on the respective measurement results;
• and
• array antenna switching 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 using the array antenna in communication with at least one of the mobile station devices.

A control method for an adaptive array base station device for carrying out radio communication with each of a plurality of mobile station devices, selectively using at least three antenna elements, comprising:

• an array antenna forming step of selecting at least two of the antenna elements and combining the selected antenna elements, to thereby sequentially form one array antenna;
• an array antenna communication performance measurement step, every time the array antenna is formed at the array antenna forming step, of measuring communication performance of the array antenna, and calculating respective array antenna communication performance values, each indicating communication performance of each of the array antennas, based on the respective measurement results;
• and
• an array antenna switching step of 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 at the array antenna communication performance measurement step, and using the array antenna in communication with at least one of the mobile station devices.