RADIO BASE STATION APPARATUS AND MODULATING/CODING SCHEME SELECTING METHOD

摘要

It is an object of the present invention to reduce a probability that MCSs including different modulation schemes may be selected and thereby improve a throughput characteristic of an entire system. The present invention includes a CQI information decoding section (101) that decodes a CQI of a downlink transmission stream and an MCS selection section (102) that includes a table (MCS table 1021) that defines a modulation/coding scheme (MCS) according to the CQI of the downlink transmission stream and defines modulation/coding scheme groups including the same modulation scheme and defined so that transmission rates are arranged in ascending order in each of the modulation/coding scheme groups, and selects an MCS of the downlink transmission stream based on the CQI of the downlink transmission stream decoded by the CQI information decoding section (101).