Method and apparatus for transmitting control information in wireless communication system
AssigneeLG Electronics Inc.
InventorsSuckchel Yang, Joonkui Ahn, Hanbyul Seo, Seungmin Lee
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Abstract
The present invention relates to a wireless communication system. Specifically, the present invention relates to a method for transmitting, by a terminal, control information in an FDD cell, and an apparatus therefor, the method comprising the steps of: receiving sub-frame reconfiguration information for a UL CC; receiving, on the FDD cell, a PDCCH including DCI; receiving, on the FDD cell, a PDSCH indicated by the PDCCH; and transmitting, on the UL CC, HARQ-ACK information on the PDSCH, wherein if the PDSCH is received on a DL CC, the DCI does not include a DAI field, and if the PDSCH is received in the UL CC, the DCI includes a DAI field.
Claims4
A method for a user equipment (UE) to transmit control information through a frequency division duplex (FDD) cell, which includes an uplink component carrier (UL CC) and a downlink CC (DL CC), in a wireless communication system, the method comprising:
- receiving reconfiguration information for the UL CC of the FDD cell, wherein the reconfiguration information indicates a first UL-DL configuration;
- reconfiguring UL subframes on the UL CC of the FDD cell based on the first UL-DL configuration, wherein the first UL-DL configuration indicates one of UL-DL configurations of Table 1;
- monitoring at least one of a common search space (CSS) or a UE-specific search space (USS) in a reconfigured DL subframe #(n−k) on the UL CC of the FDD cell, to receive a physical downlink control channel (PDCCH) including downlink control information (DCI);
- receiving, on the UL CC of the FDD cell, a physical downlink shared channel (PDSCH) in the reconfigured DL subframe #(n−k) based on the PDCCH;
- and
- transmitting, on the UL CC of the FDD cell, ACK/NACK information for the PDSCH in a non-reconfigured UL subframe #k,
- wherein when the reconfigured DL subframe #(n−k) corresponds to a subframe #(n−4), the CSS and the USS are all monitored by the UE, and when the reconfigured DL subframe #(n−k) does not correspond to the subframe #(n−4), only the USS is monitored by the UE, and
- wherein the Table 1 is given as follows:
- Uplink-downlink
- Subframe number
- configuration
- 0
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 0
- D
- S
- U
- U
- U
- D
- S
- U
- U
- U
- 1
- D
- S
- U
- U
- D
- D
- S
- U
- U
- D
- 2
- D
- S
- U
- D
- D
- D
- S
- U
- D
- D
- 3
- D
- S
- U
- U
- U
- D
- D
- D
- D
- D
- 4
- D
- S
- U
- U
- D
- D
- D
- D
- D
- D
- 5
- D
- S
- U
- D
- D
- D
- D
- D
- D
- D
- 6
- D
- S
- U
- U
- U
- D
- S
- U
- U
- D.
A user equipment (UE) configured to transmit control information through a frequency division duplex (FDD) cell, which includes an uplink component carrier (UL CC) and a downlink CC (DL CC), in a wireless communication system, the UE comprising:
- a radio frequency (RF) unit;
- and
- a processor,
- wherein the processor is configured to:
- receive reconfiguration information for the UL CC of the FDD cell, wherein the reconfiguration information indicates a first UL-DL configuration;
- reconfigure UL subframes on the UL CC of the FDD cell based on the first UL-DL configuration, wherein the first UL-DL configuration indicates one of UL-DL configurations of Table 1;
- monitor at least one of a common search space (CSS) or a UE-specific search space (USS) in a reconfigured DL subframe #(n-k) on the UL CC of the FDD cell, to receive a physical downlink control channel (PDCCH) including downlink control information (DCI), (DCI);
- receive, on the UL CC of the FDD cell, a physical downlink shared channel (PDSCH) in the reconfigured DL subframe #(n−k) based on the PDCCH;
- and
- transmit, on the UL CC of the FDD cell, ACK/NACK information for the PDSCH in a non-reconfigured UL subframe #k,
- wherein when the reconfigured DL subframe #(n−k) corresponds to a subframe #(n−4), the CSS and the USS are all monitored by the UE, and when the reconfigured DL subframe #(n−k) does not correspond to the subframe #(n−4), only the USS is monitored by the UE, and
- wherein the Table 1 is given as follows:
- Uplink-downlink
- Subframe number
- configuration
- 0
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 0
- D
- S
- U
- U
- U
- D
- S
- U
- U
- U
- 1
- D
- S
- U
- U
- D
- D
- S
- U
- U
- D
- 2
- D
- S
- U
- D
- D
- D
- S
- U
- D
- D
- 3
- D
- S
- U
- U
- U
- D
- D
- D
- D
- D
- 4
- D
- S
- U
- U
- D
- D
- D
- D
- D
- D
- 5
- D
- S
- U
- D
- D
- D
- D
- D
- D
- D
- 6
- D
- S
- U
- U
- U
- D
- S
- U
- U
- D.
Dependencies are inferred from the claim text.