Multicarrier mobile communication system

A transmitting unit comprising:

• a coding section configured to divide a transmission data into a plurality of code blocks, and encode each of the plurality of code blocks to generate a transmission signal;
• and
• a transmitting section configured to transmit the transmission signal,
• wherein first resources are assigned to each of a plurality of code blocks of the transmission signal, and
• wherein said transmitting section assigns resources of a first code block group of the plurality of code blocks of the transmission signal to second resources which are fewer than for the first resources, based on a retransmission request feedback data, and retransmits the transmission signal to a receiving unit.

A receiving unit comprising:

• a receiving section configured to receive the transmission signal as a reception signal;
• and
• a decoding section configured to perform iterative decoding of an error correction decoding and error detection to each of a plurality of code blocks of the reception signal,
• wherein said decoding section terminates the iterative decoding to a first code block group, in which an error has not been detected before a first setting number of times of iteration, among the plurality of code blocks of the reception signal,
• wherein when there is an error in the said reception signal, said receiving section transmits a retransmission request feedback data, which contains a NACK data indicating that there is an error in the transmission signal and a data indicating the first code block group, to the a transmitting unit, and
• wherein first resources are assigned to each of the plurality of code blocks of the transmission signal, resources of the first code block group of a plurality of code blocks of the transmission signal are assigned to second resources which are fewer than for the first resources, based on the retransmission request feedback data.

A multicarrier mobile communicating method comprising:

• dividing a transmit data into a plurality of code blocks;
• encoding each of the plurality of code blocks to generate a transmission signal;
• transmitting the transmission signal from a transmitting unit to a receiving unit;
• receiving the transmission signal as a reception signal;
• when there is an error in the reception signal, transmitting a retransmission request feedback data which contains a NACK data indicating that there is an error in the transmission signal, and a data indicating the first code block group to the transmitting unit, wherein first resources are assigned for each of the plurality of code blocks of the transmission signal;
• assigning resources of the first code block group of the plurality of code blocks of the transmission signal to second resources which are different from the first resources, based on the retransmission request feedback data;
• and
• retransmitting the transmission signal to the receiving unit.