Mobile communication apparatus

A mobile communication system comprising:

• an apparatus on a receiving side, receiving and storing data transmitted over the period of a plurality of processing time units, and at a time of retransmitting the data, having a retransmission control function of performing composition processing of the stored data with the data being retransmitted over a period of a plurality of processing time units, based on each processing time unit;
• and
• an apparatus on a transmitting side, transmitting data to the apparatus on the receiving side over the a period of a plurality of processing time units, and having a retransmission control function of retransmitting the data based on a reception decision result from the apparatus on the receiving side,
• wherein the apparatus on the receiving side further comprises:
• a reception decision circuitry section executing reception decision processing for deciding a presence or non-presence of reception error in the entire data transmitted over a plurality of processing time units on which composition processing is performed, based on each processing time unit;
• and
• a transmission circuitry section notifying the apparatus on the transmitting side of the reception decision result, based on each processing time unit, wherein, before the completion of the reception of the entire data retransmitted over the plurality of processing time units on which composition processing is performed, the reception decision circuitry section decides a normal decision indicative of no reception error, and
• wherein the apparatus on the transmitting side further comprises:
• a reception circuitry section receiving the reception decision result for each processing time unit from the apparatus on the receiving side;
• and
• a retransmission control circuitry section retransmitting the entire data, when the reception decision results in regard to the entire data are abnormal decisions indicative of the presence of errors, and when the reception section receives a normal decision result, indicative of no reception error, from the apparatus on the receiving side before the completion of data retransmission to be retransmitted over the period of the plurality of processing time units, suspending the retransmission of data after the timing when the normal reception decision result is received.