Granted Patent B2

US 9,232,511 · App. 14/572,548 · Granted Jan 5, 2016

Inventors: Suckchel Yang (Anyang-si, KR); Joonkui Ahn (Anyang-si, KR); Dongyoun Seo (Anyang-si, KR)

Assignee: LG ELECTRONICS INC.

H04W72/0413H04L1/1861H04L5/001H04L5/0053H04L5/0055H04L5/14H04L27/2626H04W72/042H04L1/1819

Abstract

Claims (216)

1. A method for transmitting uplink control information by a user equipment in a wireless communication system supporting carrier aggregation of a plurality of cells and operating in a time division duplex (TDD), the method comprising:

receiving, by the user equipment, downlink signals on the plurality of cells, each of the downlink signals requiring a hybrid automatic repeat request acknowledgement (HARQ-ACK) response; and

transmitting, by the user equipment, the uplink control information including at least one per-cell HARQ-ACK bit for each cell in an uplink subframe via a physical uplink shared channel (PUSCH),

wherein, when a reference uplink-downlink (UL-DL) configuration for performing the receiving and the transmitting belongs to a first UL-DL configuration set on each of the plurality of cells, a number of the at least one per-cell HARQ-ACK bit for each cell is determined using a value of min (W, Mc), and

wherein min (W, Mc) denotes a smallest value of W and Mc, W denotes a value indicated by 2-bit downlink assignment index (DAI) information included in downlink control information corresponding to the PUSCH, and Mc denotes a number of downlink subframes corresponding to the uplink subframe for each cell.

2. The method according to claim 1 , wherein, when a reference uplink-downlink (UL-DL) configuration for performing the receiving and the transmitting belongs to a second UL-DL configuration set on at least one of the plurality of cells, the number of the at least one per-cell HARQ-ACK bit for each cell is determined using a value of min (W+4┌(U max −W)/4┐, Mc), and

wherein U max denotes a maximum value from among a number of the downlink signals per cell, and ┌ ┐ denotes a ceiling function.

3. The method according to claim 2 , wherein a UL-DL configuration defines a subframe configuration in a radio frame according to the following table:

UL-DL

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,

and

wherein D denotes a downlink subframe, U denotes an uplink subframe, and S denotes a subframe including a downlink period, a guard period and an uplink period.

4. The method according to claim 3 , wherein the first UL-DL configuration set includes UL-DL configuration 0, 1, 2, 3, 4, or 6.

5. The method according to claim 3 , wherein the second UL-DL configuration set includes UL-DL configuration 5.

6. The method according to claim 1 , wherein the at least one per-cell HARQ-ACK bit is concatenated in an ascending order of a cell index of each cell in the uplink control information.

7. The method according to claim 1 , wherein the downlink signals include at least one physical downlink shared channel (PDSCH) signal.

8. The method according to claim 1 , wherein the downlink signals include at least one physical downlink control channel (PDCCH) signal indicating semi-persistent scheduling (SPS) release.

9. The method according to claim 1 , wherein the uplink control information is transmitted using physical uplink control channel (PUCCH) format 3.

10. The method according to claim 1 , wherein the plurality of cells have different UL-DL configurations.

11. A communication apparatus configured to transmit uplink control information in a wireless communication system supporting carrier aggregation of a plurality of cells and operating in a time division duplex (TDD), the communication apparatus comprising:

a radio frequency (RF) unit; and

a processor configured to:

receive downlink signals on the plurality of cells, each of the downlink signals requiring a hybrid automatic repeat request acknowledgement (HARQ-ACK) response, and

transmit the uplink at least one per-cell HARQ-ACK bit for each cell in an uplink subframe via a physical uplink shared channel (PUSCH),

wherein, when a reference uplink-downlink (UL-DL) configuration for performing the receiving and the transmitting belongs to a first UL-DL configuration set on each of the plurality of cells, a number of the at least one per-cell HARQ-ACK bit for each cell is determined using a value of min (W, Mc), and

wherein min (W, Mc) denotes a smallest value of W and Mc, W denotes a value indicated by 2-bit downlink assignment index (DAI) information included in downlink control information corresponding to the PUSCH, and Mc denotes a number of downlink subframes corresponding to the uplink subframe for each cell.

12. The communication apparatus according to claim 11 , wherein, when a reference uplink-downlink (UL-DL) configuration for performing the receiving and the transmitting belongs to a second UL-DL configuration set on at least one of the plurality of cells, the number of the at least one per-cell HARQ-ACK bit for each cell is determined using a value of min (W+4┌(U max −W)/4┐, Mc), and

wherein U max denotes a maximum value from among a number of the downlink signals per cell, and ┌ ┐ denotes a ceiling function.

13. The communication apparatus according to claim 12 , wherein a UL-DL configuration defines a subframe configuration in a radio frame according to the following table:

UL-DL

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,

and

wherein D denotes a downlink subframe, U denotes an uplink subframe, and S denotes a subframe including a downlink period, a guard period and an uplink period.

14. The communication apparatus according to claim 13 , wherein the first UL-DL configuration set includes UL-DL configuration 0, 1, 2, 3, 4, or 6.

15. The communication apparatus according to claim 13 , wherein the second UL-DL configuration set includes UL-DL configuration 5.

16. The communication apparatus according to claim 11 , wherein the at least one per-cell HARQ-ACK bit is concatenated in an ascending order of cell index of each cell in the uplink control information.

17. The communication apparatus according to claim 11 , wherein the downlink signals include at least one physical downlink shared channel (PDSCH) signal.

18. The communication apparatus according to claim 11 , wherein the downlink signals include at least one physical downlink control channel (PDCCH) signal indicating semi-persistent scheduling (SPS) release.

19. The communication apparatus according to claim 11 , wherein the uplink control information is transmitted using physical uplink control channel (PUCCH) format 3.

20. The communication apparatus according to claim 11 , wherein the plurality of cells have different UL-DL configurations.

Priority Claims (1)

Continuity (10)