BASE STATION, TERMINAL, AND WIRELESS COMMUNICATION SYSTEM
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United States of America Patent
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app pub date -
Oct 2, 2017
filing date -
Apr 7, 2015
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Abstract
A base station includes an unlicensed-band receiving unit, a determining unit, an error-rate calculating unit, and an uplink managing unit. The unlicensed-band receiving unit receives data that is transmitted from a terminal in the band that is used for a wireless communication. The determining unit determines whether the data, received by the unlicensed-band receiving unit, is collision data or non-collision data. The error-rate calculating unit calculates an error rate on the basis of data that is determined to be non-collision data by the determining unit among data that are received by the unlicensed-band receiving unit. The uplink managing unit corrects the index, which is used to select a modulation method and a coding rate when the terminal transmits data, on the basis of the error rate that is calculated by the error-rate calculating unit.
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