Signal transmission and reception method in wireless communication system supporting carrier aggregation, and device for same
The present invention relates to a signal transmission and reception method and device using a plurality of cells of a terminal in a wireless communication system supporting a carrier aggregation. Particularly, the signal transmission and reception method comprises the steps of: receiving transmission control information for a primary cell (PCell) and a secondary cell (SCell) according to uplink-downlink configuration difference from each other, transmitting and receiving a signal in a specific time period according to the transmission control information; and performing a signal transmission and reception operation according to a pre-defined configuration when a signal transmission in a specific time period is not indicated in the transmission control information.
1. A signal transmission and reception method for a user equipment (UE) using multiple cells in a wireless communication system supporting carrier aggregation, the method comprising:
receiving first information indicating a probability of whether an uplink is scheduled in first uplink subframes from a primary cell (PCell) and second information indicating a probability of whether an uplink is scheduled in second uplink subframes from a secondary cell (SCell);
receiving uplink control information for the PCell and the SCell conforming to different uplink-downlink configurations;
determining whether an uplink signal is transmitted in a third uplink subframe, scheduled to transmit the uplink signal by the uplink control information based on at least one of the first information and the second information; and
transmitting the uplink signal when the UE determines to transmit the uplink signal in the third uplink subframe,
wherein the third uplink subframe is one of the first and the second uplink subframes.
2. The signal transmission and reception method according to claim 1 , wherein a downlink signal using the SCell in a time period, when the PCell corresponds to an uplink subframe and the SCell corresponds to a downlink subframe in the time period.
3. The signal transmission and reception method according to claim 2 , further comprising feeding back HARQ-ACK information according to the downlink signal reception operation using a self-scheduling related downlink HARQ timeline.
4. The signal transmission and reception method according to claim 3 , wherein the self-scheduling related downlink HARQ timeline is a downlink HARQ timeline related to an uplink-downlink configuration defined to include both downlink subframes of the PCell and downlink subframes of the SCell.
5. The signal transmission and reception method according to claim 1 , wherein a downlink signal reception operation is performed using the SCell in at least part of a time period when the PCell corresponds to a special subframe and the SCell corresponds to a downlink subframe in the time period.
6. The signal transmission and reception method according to claim 5 , wherein the at least part of the time period includes a time period corresponding to an UpPTS in the special subframe.
7. The signal transmission and reception method according to claim 1 , wherein a downlink signal reception operation is performed using the SCell in at least part of a time period when the PCell corresponds to a downlink subframe and the SCell corresponds to a special subframe in the time period.
8. A user equipment (UE) performing signal transmission and reception using multiple cells in a wireless communication system supporting carrier aggregation, the UE comprising:
a transceiver; and
a processor, operatively coupled to the transceiver, that:
controls the transceiver to receive first information indicating a probability of whether an uplink is scheduled in first uplink subframes from a primary cell (PCell) and second information indicating a probability of whether an uplink is scheduled in second uplink subframes from a secondary cell (SCell),
controls the transceiver to receive uplink control information for the PCell and the SCell conforming to different uplink-downlink configurations,
determines whether an uplink signal is transmitted in a third uplink subframe, scheduled to transmit the uplink signal by the uplink control information based on at least one of the first information and the second information, and
controls the transceiver to transmit the uplink signal when the UE determines to transmit the uplink signal in the third uplink subframe,
wherein the third uplink subframe is one of the first and the second uplink subframes.