| 摘要 |
<P>PROBLEM TO BE SOLVED: To encode and transmit an ACK/NACK efficiently when the ACK/NACK corresponding to a plurality of PDSCHs is transmitted on one PUSCH. <P>SOLUTION: A mobile station device receives one or multiple PDSCHs on multiple downlink component carriers set to a base station device. The mobile station device generates an ACK/NACK depending on whether one or multiple pieces of downlink data in the PDSCHs are decoded successfully or not. The mobile station device serializes ACK/NACK bits, in an order the number of downlink component carrier is small, of the downlink data corresponding to the downlink component carriers set to the base station device. The mobile station device calculates the number of ACK/NACK modulation symbols used for the ACK/NACK to be transmitted on the PUSCH from the number of ACK/NACK bits or the like. The mobile station device inserts a coding bit of a predetermined value of x in a sequence of coding bits used for communication channel encoding. The mobile station device modulates coded uplink data and the ACK/NACK using the same modulation scheme, and then transmits them to the base station device. <P>COPYRIGHT: (C)2012,JPO&INPIT |
