| 摘要 |
The present invention relates to a wireless communications system. Specifically, a method for transmitting an uplink signal in a wireless communications system supporting carrier aggregation includes the steps of setting a first cell of a first time division duplex (TDD) uplink (UL)-downlink (DL) configuration, and a second cell of a second TDD UL-DL configuration; receiving data over a DL subframe of the first cell; and transmitting a control signal over a UL subframe of the second cell in response to the received data, wherein a relationship of the DL subframe and UL subframe is determined by parameter values set in a specific TDD UL-DL configuration in a TDD WL-DL configuration set, the specific TDD UL-DL configuration has the minimum number of DL subframes among one or more of TDD UL-DL configurations in which subframes set as a DL or X in the first cell or the second cell are all set as the DL, the subframes set as X have different subframe directions in the first cell and the second cell at a corresponding subframe timing, and the uses thereof are limited in either the first cell or the second cell. |
