Patent ID: 9143284
Filing Date: 2015-09-22
Classification: H04L

Abstract:
1. A receiving apparatus comprising: a splitting unit that splits a received signal received from a predetermined transmitter into a predetermined size; a split signal retaining unit that retains split signals obtained by the splitting unit in a split signal storing unit; a split signal checking unit that performs error checking on each of split signals stored in the split signal storing unit; a check result storing unit that stores therein a result of the error checking performed by the split signal checking unit; a combining unit that combines, when a retransmission signal is received, a split signal that is obtained by the splitting unit splitting the retransmission signal and a split signal that is stored in the split signal storing unit; a decoding unit that decodes the split signals stored in the split signal storing unit; a decoded data storing unit that stores therein decoded data decoded by the decoding unit; a control unit that performs a signal update control by controlling, among the split signals stored in the split signal storing unit, not to update the split signal for which an error checking result does not indicate an error and by controlling to update the split signal for which an error checking result indicates an error to a combined signal combined by the combining unit; and a retransmission requesting unit that sends, when an error is contained in a split signal stored in the split signal storing unit, a request to the transmitter to retransmit the retransmission signal, wherein the control unit, performs a decoded data update control by controlling decoded data associated with the split signal, from among decoded data stored in the decoded data storing unit and for which the error checking result stored in the check result storing unit does not indicate an error, such that the split signal is not updated and by controlling decoded data associated with the split signal, from among decoded data stored in the decoded data storing unit and for which the error checking result stored in the check result storing unit indicates an error, such that the decoded data is updated to the decoded data decoded by the decoding unit, the transmitter performs a retransmission process on multiple signals by using multiple processes, the decoded data storing unit stores the decoded data in a predetermined number of banks, the control unit performs the signal update control, when a bank for storing the decoded data for the retransmission signal is not reserved in the decoded data storing unit, and the control unit performs the decoded data update control when a bank for storing the decoded data for the retransmission signal is reserved in the decoded data storing unit.