| 摘要 |
PROBLEM TO BE SOLVED: To realize that channel state information for a plurality of cells to a wireless base station from a user terminal is adequately fed back, even when applying carrier aggregation.SOLUTION: A wireless communication method for a user terminal and a wireless base station is provided, involving carrier aggregation, and having a step in which the user terminal respectively generates channel state information for each cell in an uplink control channel format 2 or a format 3 on the basis of the number of cells used in the carrier aggregation, and a step in which the generated channel state information is fed back using a resource configured by the wireless base station on the uplink control channel of a primary cell at a predetermined timing in accordance with the uplink control channel format. The wireless base station secures, regardless of the number of cells used in the carrier aggregation, the resource configured on the uplink control channel when the channel state information of the primary cell is generated in uplink control channel format 2. |
