According to one embodiment, a wireless communication apparatus includes transmitter circuitry, receiver circuitry and processing circuitry. The processing circuitry is configured to determine, based on a first acknowledgement frame and a second acknowledgement frame, a first data frame received by a first wireless communication apparatus and not received by a second wireless communication apparatus among data frames. The processing circuitry is configured to determine that the transmitter circuitry transmits at least one of the first data frame and a second data frame to the second wireless communication apparatus, and the first wireless communication apparatus transmits the first data frame to the second wireless communication apparatus.