| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to efficiently transmit and receive signals including uplink control information between a base station device and a mobile station device.SOLUTION: An eREG is formed from a plurality of resources into which one DL PRB pair is divided, an eCCE is formed from the aggregation of a plurality of eREGs, and a second PDCCH is formed from the aggregation of one or more eCCEs. As a mapping method of the eREG applied to an eCCE, any one of localized mapping or distributed mapping is applied to the second PDCCH. Regarding associating a PUCCH resource with the eCCE, different associating rules are applied to the respective methods. A mobile station device includes a first control unit for selecting a PUCCH resource used for transmission on the basis of a mapping method applied to a second PDCCH destined to its own device, and an eCCE forming the second PDCCH destined to the own device. |
