| 摘要 |
A communication device includes pilot signal sending part and transmit power control part and holds a criterion value indicating target channel quality for mobile stations 102, 112 within the area covered by the base station 101, 111. It creates quality data from reports from one or plural mobile stations 102, 112, stores the quality data, creates a first representative value indicating average channel quality for the mobile station(s) 102, 112 from the stored quality data, and changes the transmit power depending on the result of comparison between the first representative value and the criterion value. It creates a second representative value indicating distribution of low channel quality from the stored quality data and updates the criterion value depending on the result of comparison between the second representative value and the criterion value. |
