| 摘要 |
A base station (20) that has an unlicensed band reception unit (230), a determination unit (207), an error-rate calculation unit (206), and an uplink management unit (202). The unlicensed band reception unit (230) receives data transmitted from a terminal over bandwidth used for wireless communication. The determination unit (207) determines whether the data received by the unlicensed band reception unit (230) is collision data or non-collision data. The error-rate calculation unit (206) calculates an error rate on the basis of data that, from within the data received by the unlicensed band reception unit (230), has been determined to be non-collision data by the determination unit (207). On the basis of the error rate calculated by the error-rate calculation unit (206), the uplink management unit (202) corrects an index that is used in selecting a modulation system and an encoding rate for data transmission by the terminal. |
