Communication apparatus, transmitting method and receiving method

A communication apparatus that performs receiving processing of data transmitted at timings of a predetermined interval from another communication apparatus, the communication apparatus comprising:

• a transmitter configured to transmit a signal indicating that data is successfully received when the data transmitted at Mth timing according to the predetermined interval is successfully received;
• and
• a controller configured to determine, after the transmitter transmits a first signal indicating the data is successfully received, whether or not a retransmission control processing is performed by the another communication apparatus when the first signal indicating that the data is successfully received is transmitted, wherein the controller controls the transmitter to transmit a second signal indicating that the data is successfully received regardless of whether or not the communication apparatus receives retransmitted data when it is determined the retransmission control processing is performed.