| 摘要 |
A terminal and a communication method thereof whereby, even in a case of employing the asymmetric carrier aggregation system and further employing the MIMO transmission method for upstream channels, the error characteristic of control information can be prevented from being degraded. In the terminal (200), a transport signal forming unit (212) forms transport signals by placing, based on a placement rule, ACK/NACK and CQI in a plurality of layers. According to the placement rule, an error detection result is placed, on a priority basis, in a layer that is different from a layer in which the channel quality information is placed. In this way, the puncturing of CQI using ACK/NACK can be minimized, with the result that the error characteristic of control information can be prevented from being degraded. |
