RADIO COMMUNICATION SYSTEM AND RADIO COMMUNICATION METHOD

摘要

PROBLEM TO BE SOLVED: To use transmission power control by a NOMA and a successive interference cancellation (SIC) technique by NOMA (non-orthogonal multiple access) to receive a signal to an own station in a separated manner even when there exists an interference wave.SOLUTION: A radio communication system comprises: a reception terminal apparatus which comprises means of measuring an in-band reception power for receiving a signal to an own station and transmitting a transmission power control signal for causing a transmission station apparatus to increase transmission power when reception of the signal to the own station fails despite detection of the in-band reception power and the in-band reception power is equal to or less than a predetermined threshold value, and causing the transmission station apparatus to decrease the transmission power when the in-band reception power exceeds the predetermined threshold value; and a transmission station apparatus which comprises transmission power control means of performing control when receiving the transmission power control signal from a reception station apparatus which is a destination of a transmission signal, to increase or decrease the transmission power depending on a notice of reception of the transmission power control signal.SELECTED DRAWING: Figure 1