Patent ID: 8775909

Claim:
A terminal apparatus comprising: a receiver configured to receive a first code word and a second code word, each of the first code word and the second code word being a unit for retransmitting a data signal and being formed of a group of first blocks and a group of second blocks, respectively, the first blocks and the second blocks being mapped to a plurality of downlink unit bands; an error detector configured to detect an error of each block; and a transmitter configured to transmit a bundled response signal that is obtained by bundling results of the error detection into one result per each bundling group, on a basis of a bundling rule for associating each block of the first blocks and the second blocks with any of a first bundling group and a second bundling group, wherein the bundling rule defines that at least any one of the first bundling group and the second bundling group includes both at least one of the first blocks and at least one of the second blocks.