There are provided a communication apparatus, method and system, and the communication apparatus, comprises: a transmitter configured to transmit a first data to a terminal and retransmit a second data to the terminal under a retransmission condition after transmitting the first data; and a circuitry configured to control a retransmission scheme for the retransmission of the second data based on at least one of a systematic bit degree and a preempted resource degree for the transmission of the first data.