Granted Patent B2

US 9,572,138 · App. 14/000,593 · Granted Feb 14, 2017

Inventors: Hyunwoo Lee (Anyang-si, KR); Jinmin Kim (Anyang-si, KR); Seunghee Han (Anyang-si, KR)

Assignee: LG ELECTRONICS INC.

H04W72/0413H04L5/001H04L5/0055H04W56/0045

Abstract

Claims (393)

1. A method for transmitting control information to a base station by a user equipment in a wireless communication system supporting aggregation of a plurality of serving cells, the user equipment being configured with the plurality of serving cells including a primary cell and a secondary cell operating in time division duplex (TDD), the method comprising:

receiving each of a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH) from the base station in a downlink subframe through a respective one of the primary cell and secondary cell; and

transmitting control information regarding the received PDSCH to the base station in an uplink subframe of the primary cell or the secondary cell,

wherein, when the primary cell has a first uplink-downlink (UL-DL) configuration and the secondary cell has a second UL-DL configuration different from the first UL-DL configuration, an UL-DL timing relation of each of the primary cell and secondary cell is selected to be equal to a timing relation of the one of the first UL-DL configuration or the second UL-DL configuration having a smallest number of uplink subframes, and

wherein each of the first UL-DL configuration and the second UL-DL configuration includes at least one uplink subframe.

2. The method according to claim 1 , wherein each of the first UL-DL configuration and second UL-DL configuration is defined by the following table:

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

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

3. The method according to claim 1 , wherein, for each of the first UL-DL configuration and the second UL-DL configuration, the uplink subframe corresponds to a subframe n, the downlink subframe corresponds to a subframe n-k, and the timing relation k is defined according to the following table:

UL-DL

Subframe n

Configuration

0

1

2

3

4

5

6

7

8

9

0

—

—

6

—

4

—

—

6

—

4

1

—

—

7, 6

4

—

—

—

7, 6

4

—

2

—

—

8, 7, 4, 6

—

—

—

—

8, 7, 4, 6

—

—

3

—

—

7, 6, 11

6, 5

5, 4

—

—

—

—

—

4

—

—

12, 8, 7, 11

6, 5, 4, 7

—

—

—

—

—

—

5

—

—

13, 12, 9, 8, 7, 5, 4, 11, 6

—

—

—

—

—

—

—

6

—

—

7

7

5

—

—

7

7

—.

4. The method according to claim 1 , wherein a cell index of the primary cell is lower than a cell index of the secondary cell.

5. The method according to claim 1 , wherein:

the control information is transmitted through a physical uplink control channel (PUCCH) on the primary cell.

6. The method according to claim 1 , wherein the control information is transmitted through a physical uplink shared channel (PUSCH) on the primary or secondary cell.

7. The method according to claim 1 , wherein the control information includes acknowledgement (ACK) information or negative acknowledgement (NACK) information.

8. The method according to claim 1 , further comprising:

bundling at least some parts of the control information,

wherein the bundled control information is transmitted to the base station.

9. The method according to claim 1 , wherein the primary cell is a cell on which a PUCCH is transmitted, and the secondary cell is a cell other than the primary cell among the plurality of serving cells.

10. A user equipment configured to transmit control information to a base station in a wireless communication system supporting aggregation of a plurality of serving cells, the user equipment being configured with the plurality of serving cells including a primary cell and a secondary cell operating in time division duplex (TDD), the user equipment comprising:

a receiver configured to receive each of a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH) from the base station in a downlink subframe through a respective one of the primary cell and secondary cell;

a transmitter configured to transmit control information regarding the received PDSCH to the base station in an uplink subframe of the primary cell or the secondary cell; and

a processor,

wherein, when the primary cell has a first uplink-downlink (UL-DL) configuration and the secondary cell has a second UL-DL configuration different from the first UL-DL configuration, the processor is configured to assign an UL-DL timing relation of each of the primary cell and secondary cell to be equal to a timing relation of the one of the first UL-DL configuration or the second UL-DL configuration having a smallest number of uplink subframes, and

wherein each of the first UL-DL configuration and the second UL-DL configuration includes at least one uplink subframe.

11. The user equipment according to claim 10 , wherein each of the first UL-DL configuration and second UL-DL configuration is defined by the following table:

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

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

12. The user equipment according to claim 10 , wherein, for each of the first UL-DL configuration and the second UL-DL configuration, the uplink subframe corresponds to a subframe n, the downlink subframe corresponds to a subframe n-k, and the timing relation k is defined according to the following table:

UL-DL

Subframe n

Configuration

0

1

2

3

4

5

6

7

8

9

0

—

—

6

—

4

—

—

6

—

4

1

—

—

7, 6

4

—

—

—

7, 6

4

—

2

—

—

8, 7, 4, 6

—

—

—

—

8, 7, 4, 6

—

—

3

—

—

7, 6, 11

6, 5

5, 4

—

—

—

—

—

4

—

—

12, 8, 7, 11

6, 5, 4, 7

—

—

—

—

—

—

5

—

—

13, 12, 9, 8, 7, 5, 4, 11, 6

—

—

—

—

—

—

—

6

—

—

7

7

5

—

—

7

7

—.

13. The user equipment according to claim 10 , wherein a cell index of the primary cell is lower than a cell index of the secondary cell.

14. The user equipment according to claim 10 , wherein:

the control information is transmitted through a physical uplink control channel (PUCCH) on the primary cell.

15. The user equipment according to claim 10 , wherein the control information is transmitted through a physical uplink shared channel (PUSCH) on the primary or secondary cell.

16. The user equipment according to claim 10 , wherein the control information includes acknowledgement (ACK) information or negative acknowledgement (NACK) information.

17. The user equipment according to claim 10 , wherein the processor bundles at least some parts of the control information, wherein the bundled control information is transmitted to the base station.

18. The user equipment according to claim 10 , wherein the primary cell is a cell on which a PUCCH is transmitted, and the secondary cell is a cell other than the primary cell among the plurality of serving cells.

Assignments (1)

Continuity (8)