Method for transceiving signals, and apparatus therefor

A UE, for which a scheduling cell having a first uplink-downlink (UL-DL) configuration and a scheduled cell having a second TDD UL-DL configuration are configured, which is configured to perform a HARQ process, comprising:

• a radio frequency (RF) unit;
• and
• a processor,
• wherein the processor is configured to receive a UL grant through the scheduling cell, to transmit, through the scheduled cell, data corresponding to the UL grant according to HARQ timing of a specific UL-DL configuration and to receive, through the scheduling cell, acknowledgement information for the data according to the HARQ timing of the specific UL-DL configuration,
• wherein the HARQ timing of the specific UL-DL configuration includes UL grant reception in a first DL subframe (DL SF) followed by data transmission in a first UL SF followed by acknowledgement information or UL grant reception in a second DL SF followed by data transmission in a second UL SF followed by acknowledgement information/UL grant reception in a third DL SF followed by data transmission in a third UL SF,
• wherein, when the scheduling cell is not a DL SF at the timing of the second DL SF, the HARQ timing of the specific UL-DL configuration is reset to include UL grant reception in the first DL SF followed by data transmission in the first UL SF followed by acknowledgement information/UL grant reception in the third DL SF followed by data transmission in the third UL SF.