A relay station includes a receiver that receives a signal from a base transceiver station, a detection unit that detects a carrier frequency deviation of the received signal, and a calculation unit that calculates a delay rate of the signal based on the detected carrier frequency deviation. The relay station includes a delay control unit that controls an amount of delay of the signal in accordance with the calculated delay rate, a compensation unit that compensates for the detected carrier frequency deviation of the signal, and a transmitter that transmits the signal of which the amount of delay is controlled and of which the carrier frequency deviation is compensated for.