RADIO BASE STATION, USER TERMINAL AND RADIO COMMUNICATION METHOD

摘要

The present invention is designed to improve spectral efficiency in a radio communication system which can use non-orthogonal multiple access (NOMA). Steps are provided in which a radio base station configures one of a plurality of transmission mode including a first transmission mode, which groups a plurality of transmission methods including a transmission method to employ non-orthogonal multiple access (NOMA) and multiple-user multiple-input and multiple-output (MU-MIMO), and a second transmission mode, which groups a plurality of transmission methods including a transmission method to employ this NOMA and open-loop transmit diversity, and transmits a downlink signal for this user terminal based on the configured transmission mode.

主权项

1. A radio base station that transmits a downlink signal for a user terminal, comprising:
a configuration section that configures, for the user terminal, one of a plurality of transmission modes including a first transmission mode, which groups a plurality of transmission methods including a transmission method to employ non-orthogonal multiple access (NOMA) and multiple-user multiple-input and multiple-output (MU-MIMO), and a second transmission mode, which groups a plurality of transmission methods including a transmission method to employ NOMA and open-loop transmit diversity; and a transmission section that transmits the downlink signal based on the transmission mode configured by the configuration section.