Base station apparatus, mobile terminal apparatus, mobile communication system and information retransmission method

A mobile terminal apparatus comprising:

• a reception section configured to receive transmission signals divided into retransmission blocks according to a retransmission block table with which are registered the numbers of the retransmission blocks, each of the transmission blocks is a retransmission unit of a transmission signal, the numbers of the retransmission blocks are required numbers corresponding to the number of transmission antennas and the system bandwidth in case that a maximum value of a size of the retransmission block is fixed to a certain value;
• and
• a retransmission block combining section configured to combine the retransmission blocks to restore a transmission signal prior to division.

A mobile communication system comprising:

• a base station apparatus which divides a transmission signal into retransmission blocks according to a retransmission block table with which are registered the numbers of the retransmission blocks required corresponding to the number of transmission antennas and the system bandwidth with a maximum value of a size of the retransmission block, which is a retransmission unit of a transmission signal, fixed to a certain value, and retransmits on downlink transmission signals associated with the divided retransmission blocks;
• and
• a mobile terminal apparatus which receives the transmission signals associated with the retransmission blocks, and combines the retransmission blocks to restore the transmission signal prior to division.