In FIG. 3, the reception control unit 304 can recognize whether a received packet is a new data packet or a retransmission data packet according to the new data indication information (refer to FIG. 9(b)) included in the downlink control information (DCI) transmitted from the serving eNB with the received packet through a physical downlink control channel as described later. The recognition is similar to the identification between the scenario 1 and the scenario 2, or between the scenario 1 and the scenario 3. The reception control unit 304 performs the identifying process based on the output of the retransmission data packet demodulation unit 302-1 which constantly performs the demodulating process.

By the identification, when the reception device operates according to the scenario 1 (FIG. 4(a)) described above, the retransmission data packet reception unit 302, the retransmission data packet re-coding unit 303-1, the retransmission data packet re-modulation unit 303-2, and the canceller unit 303-3 in the new data packet reception unit 303 do not operate, and the received signal received by the wireless processing unit 301 through an antenna passes through the canceller unit 303-3 in the new data packet reception unit 303 and enters the new data packet demodulation unit 303-4.

The new data packet demodulation unit 303-4 demodulates the received packet from each communication channel configuring the received signal input from the wireless processing unit 301, and outputs the received packet to the new data packet decoding unit 303-5.