Method and apparatus for supporting burst transmission in a wireless communication system

1. A method for supporting burst transmission in a wireless communication system supporting multiple carriers, performed by a wireless device, the method comprising:

receiving a physical downlink control channel (PDCCH) for the burst transmission via a first serving cell at nth subframe;

transmitting a response signal of the PDCCH via the first serving cell;

receiving physical downlink shared channel (PDSCH)s for the burst transmission via a second serving cell from n+kth subframe; and

transmitting an ACK/NACK signal of the PDSCHs via the first serving cell,

wherein the ACK/NACK signal is a single ACK/NACK signal for the PDSCHs, a separate ACK/NACK signal for each PDSCH of the PDSCHs, or a selective ACK/NACK for the PDSCHs,

wherein the selective ACK/NACK signal comprises an ACK signal if more than R PDSCHs out of N PDSCHs are received,

wherein the selective ACK/NACK signal comprises a NACK signal if more than R PDSCHs out of N PDSCHs are not received successfully, and

wherein a power control for the transmitted ACK/NACK signal is applied considering an offset and a number of PDSCHs subframes for the burst transmission or considering a Redundancy Version (RV) indicating a number of retransmissions of the PDCCH.

2. The method of claim 1 , further comprising:

wherein the PDCCH includes a number of PDSCHs to be transmitted in a burst transmission cycle, and

wherein the first serving cell is a primary serving cell (PCell) and the second serving cell is a secondary serving cell (SCell).

3. The method of claim 1 , further comprising:

determining a PDCCH scheduling for the burst transmission at the n+k th subframe; and

confirming a number of PDSCH subframes to be transmitted in the burst transmission cycle using the PDCCH scheduling for the burst transmission.

4. The method of claim 3 , further comprising:

determining whether the burst transmission is scheduled via semi-persistent scheduling (SPS) configuration.

5. A wireless device for supporting burst transmission in a wireless communication system supporting multiple carriers, comprising:

a radio frequency unit for receiving a radio signal; and

a processor, operatively coupled with the radio frequency unit, configured to:

receive a physical downlink control channel (PDCCH) for the burst transmission via a first serving cell at n th subframe,

transmit a response signal of the PDCCH via the first serving cell,

receive physical downlink shared channel (PDSCH)s for the burst transmission via a second serving cell from n+k th subframe; and

transmit an ACK/NACK signal of the PDSCHs via the first serving cell,

wherein the ACK/NACK signal is a single ACK/NACK signal for the PDSCHs, a separate ACK/NACK signal for each PDSCH of the PDSCHs, or a selective ACK/NACK for the PDSCHs,

wherein the selective ACK/NACK signal comprises an ACK signal if more than R PDSCHs out of N PDSCHs are received,

wherein the selective ACK/NACK signal comprises a NACK signal if more than R PDSCHs out of N PDSCHs are not received successfully, and

wherein a power control for the transmitted ACK/NACK signal is applied considering an offset and a number of PDSCHs subframes for the burst transmission or considering a Redundancy Version (RV) indicating a number of retransmissions of the PDCCH.

6. The wireless device of claim 5 , wherein the processor is configured that:

the PDCCH includes a number of PDSCHs to be transmitted in a burst transmission cycle, and

wherein the first serving cell is a primary serving cell (PCell) and the second serving cell is a secondary serving cell (SCell).

7. The wireless device of claim 6 , wherein the processor is configured to:

determine a PDCCH scheduling for the burst transmission at the n+k th subframe; and

confirm a number of PDSCH subframes to be transmitted in the burst transmission cycle using the PDCCH scheduling for the burst transmission.

8. The wireless device of claim 7 , the processor is further configured to:

determine whether the burst transmission is scheduled via semi-persistent scheduling (SPS) configuration.