Data transmission method, data reception method, mobile terminal and radio communication system

A data reception method comprising the steps of:

• dividing received data into a plurality of encoded bit sequences, and performing error correction decoding processing on the divided encoded bit sequences;
• performing error detection processing, by using the second CRC code added to one or more of the encoded bit sequences on which the error correction decoding processing is performed;
• transmitting a first retransmission request for a specific encoded bit sequence, when an error is detected in the specific encoded bit sequence;
• acquiring transmission data to which a first CRC code has been added by connecting the plurality of encoded bit sequences, when no error is detected in the plurality of encoded bit sequences;
• performing error detection processing by using the first CRC code;
• and
• transmitting a second retransmission request for the transmission data, when an error is detected in the transmission data.

A mobile terminal comprising:

• a first CRC adder unit configured to add a first CRC code to transmission data;
• a divider unit configured to divide the transmission data to which the first CRC code has been added into a plurality of encoded bit sequences;
• a second CRC adder unit configured to add a second CRC code to at least one of the divided encoded bit sequences;
• an error correction encoder unit configured to perform error correction encoding processing on the encoded bit sequences;
• and
• a transmitter unit configured to transmit the encoded bit sequences on which the error correction encoding processing has been performed.

A radio communication system including

• a transmitter apparatus and a receiver apparatus, wherein the transmitter apparatus comprises:
• a first CRC adder unit configured to add a first CRC code to transmission data;
• a divider unit configured to divide the transmission data to which the first CRC code has been added into a plurality of encoded bit sequences;
• a second CRC adder unit configured to add a second CRC code to at least one of the divided encoded bit sequences;
• an error correction encoder unit configured to perform error correction encoding processing on the encoded bit sequences;
• and
• a transmitter unit configured to transmit the encoded bit sequences on which the error correction encoding processing has been performed;
• and
• the receiver apparatus comprised:
• an error correction decoder unit configured to divide received data into a plurality of encoded bit sequences, and to perform error correction decoding processing on the divided encoded bit sequences;
• a second CRC checker unit configured to perform error detection processing by using the second CRC code added to one or more of the encoded bit sequences on which the error correction decoding processing has been performed;
• a first retransmission requester unit configured to transmit a first retransmission request for a specific encoded bit sequence, when no error is detected in the specific encoded bit sequence;
• a connector unit configured to connect the plurality of encoded bit sequences, when no error is detected in the plurality of encoded bit sequences, and to acquire transmission data to which a first CRC code has been added;
• a first CRC checker unit configured to perform error detection processing by using the first CRC code;
• and
• a second retransmission requester unit configured to transmit a second retransmission request for the transmission data, when an error is detected in the transmission data.