User equipment, PDSCH A/N transmitting method thereof, transmission/reception point, and PDSCH A/N receiving method thereof

1. A method for transmitting acknowledgement/negative acknowledgement (A/N) by a user equipment configured with at least two serving cells comprising a primary cell (PCell) and a secondary cell (SCell), having different Uplink-Downlink (UL-DL) configurations, the method comprising:

receiving a physical downlink shared channel (PDSCH) transmission on the SCell in a subframe ‘n−k i ’, the n, k and i being integers;

determining the interval ‘k i ’ between the reception of the PDSCH transmission on the Scell and a responsive A/N transmission, the interval being determined based on a reference UL-DL configuration for the SCell; and

transmitting the A/N responsive to the PDSCH transmission on the SCell in a subframe‘n’ according to the interval,

wherein the reference UL-DL configuration for the SCell is determined based on a PCell UL-DL configuration and SCell UL-DL configuration pair in Table 1-1 below:

TABLE 1-1

Reference UL-DL configuration for SCell

Reference

UL-DL

(PCell UL-DL configuration,

(PCell UL-DL configuration,

configuration

SCell UL-DL configuration)

SCellUL-DL configuration)

1

(1, 0), (1, 6)

(0, 1), (6, 1)

2

(2, 0), (2, 1), (2, 6)

(0, 2), (1, 2), (6, 2)

3

(3, 0), (3, 6)

(0, 3), (6, 3)

4

(4, 0), (4, 1), (4, 3), (4, 6)

(0, 4), (1, 4), (3, 4), (6, 4),

(3, 1), (1, 3)

5

(5, 0), (5, 1), (5, 2), (5, 3),

(0, 5), (1, 5), (2, 5), (3, 5),

(5, 4), (5, 6)

(4, 5), (6, 5), (3, 2), (4, 2),

(2, 3), (2, 4)

6

(6, 0)

(0, 6).

2. The method of claim 1 , wherein the PCell UL-DL configuration and the Scell UL-DL configuration are selected from among UL-DL configurations defined in Table 1-2 below:

TABLE 1-2

UL-DL configurations

Downlink-

to-Uplink

Uplink-

Switch-

downlink

point

Subframe number

configuration

periodicity

0

1

2

3

4

5

6

7

8

9

0

5 ms

D

S

U

U

U

D

S

U

U

U

1

5 ms

D

S

U

U

D

D

S

U

U

D

2

5 ms

D

S

U

D

D

D

S

U

D

D

3

10 ms 

D

S

U

U

U

D

D

D

D

D

4

10 ms 

D

S

U

U

D

D

D

D

D

D

5

10 ms 

D

S

U

D

D

D

D

D

D

D

6

5 ms

D

S

U

U

U

D

S

U

U

D

wherein D denotes a downlink subframe, S denotes a special subframe, and U denotes an uplink subframe.

3. The method of claim 1 , wherein the interval ‘k i ’ε K, and K: {k 0 , k 1 , . . . k M−1 } for the subframe ‘n’ is defined in Table 1-3 below, K and M being integers:

TABLE 1-3

Downlink association set index K: {k 0 , k 1 , . . . k M−1 } for TDD

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

—

wherein the A/N responsive to the PDSCH transmitted in the subframe (n−k i ) (0≦i≦M−1) is transmitted in the subframe ‘n’.

4. The method of claim 3 , further comprising:

transmitting another A/N in an uplink subframe determined by a reference UL-DL configuration for the PCell, the another A/N being responsive to a PDSCH transmission on the PCell,

wherein the reference UL-DL configuration for the PCell is the PCell TDD UL-DL configuration.

5. A method for receiving acknowledgement/negative acknowledgement (A/N) from a user equipment configured with at least two serving cells comprising a primary cell (PCell) and a secondary cell (SCell), having different Uplink-Downlink (UL-DL) configurations, the method comprising:

transmitting a physical downlink shared channel (PDSCH) transmission on the SCell in a subframe ‘n−k i ’, the n, k and i being integers, ‘ki’ being an interval; and

receiving the A/N responsive to the PDSCH transmission on the SCell in a subframe ‘n’ according to the interval ‘k i ’, the intercal ‘k i ’ being determined based on a reference UL-DL configuration for the Scell,

wherein the reference UL-DL configuration for the SCell is determined based on a PCell UL-DL configuration and SCell UL-DL configuration pair in Table 5-1 below:

TABLE 5-1

Reference UL-DL configuration for SCell

Reference UL-DL

(PCell UL-DL configuration, SCell UL-

(PCell UL-DL configuration, SCell

configuration

DL configuration)

UL-DL configuration)

1

(1, 0), (1, 6)

(0, 1), (6, 1)

2

(2, 0), (2, 1), (2, 6)

(0, 2), (1, 2), (6, 2)

3

(3, 0), (3, 6)

(0, 3), (6, 3)

4

(4, 0), (4, 1), (4, 3), (4, 6)

(0, 4), (1, 4), (3, 4), (6, 4), (3, 1), (1, 3)

5

(5, 0), (5, 1), (5, 2), (5, 3), (5, 4), (5, 6)

(0, 5), (1, 5), (2, 5), (3, 5), (4, 5), (6, 5),

(3, 2), (4, 2), (2, 3), (2, 4)

6

(6, 0)

(0, 6).

6. The method of claim 5 , wherein the PCell UL-DL configuration and the Scell UL-DL configuration are selected from among UL-DL configurations defined in Table 6-2 below:

TABLE 6-2

UL-DL configurations

Downlink-

to-Uplink

Uplink-

Switch-

downlink

point

Subframe number

configuration

periodicity

0

1

2

3

4

5

6

7

8

9

0

5 ms

D

S

U

U

U

D

S

U

U

U

1

5 ms

D

S

U

U

D

D

S

U

U

D

2

5 ms

D

S

U

D

D

D

S

U

D

D

3

10 ms 

D

S

U

U

U

D

D

D

D

D

4

10 ms 

D

S

U

U

D

D

D

D

D

D

5

10 ms 

D

S

U

D

D

D

D

D

D

D

6

5 ms

D

S

U

U

U

D

S

U

U

D

wherein D denotes a downlink subframe, S denotes a special subframe, and U denotes an uplink subframe.

7. The method of claim 5 , wherein the interval ‘k i ’ε K, and K: {k 0 , k 1 , . . . k M−1 } for the subframe ‘n’ is defined in Table 7-3 below, K and M being integers:

TABLE 7-3

Downlink association set index K: {k 0 , k 1 , . . . k M − 1 } for TDD

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

—

wherein the A/N responsive to the PDSCH transmitted in the subframe (n−k i ) (0≦i≦M−1) is transmitted in the subframe ‘n’.

8. The method of claim 5 , further comprising:

receiving another A/N from the user equipment in an uplink subframe determined by a reference UL-DL configuration for the PCell, the another A/N being responsive to a PDSCH transmission on the PCell,

wherein the reference UL-DL configuration for the PCell is the PCell TDD UL-DL configuration.

9. A user equipment for transmitting acknowledgement/negative acknowledgement (A/N), configured with at least two serving cells comprising a primary cell (PCell) and a secondary cell (SCell), having different Uplink-Downlink (UL-DL) configurations, the user equipment comprising:

a receiver to receive a physical downlink shared channel (PDSCH) transmission on the SCell in a subframe ‘n−k i ’, the n, k and i being integers;

a controller to determine the interval ‘k i ’ between the reception of the PDSCH transmission on the SCell and a responsive A/N transmission, the interval being determined based on a reference UL-DL configuration for the SCell; and

a transmitter to transmit the A/N responsive to the PDSCH transmission on the SCell in a subframe ‘n’ according to the interval,

wherein the reference UL-DL configuration for the SCell is determined based on a PCell UL-DL configuration and SCell UL-DL configuration pair in Table 1-1 below:

TABLE 1-1

Reference UL-DL configuration for SCell

Reference UL-DL

(PCell UL-DL configuration, SCell UL-

(PCell UL-DL configuration, SCell

configuration

DL configuration)

UL-DL configuration)

1

(1, 0), (1, 6)

(0, 1), (6, 1)

2

(2, 0), (2, 1), (2, 6)

(0, 2), (1, 2), (6, 2)

3

(3, 0), (3, 6)

(0, 3), (6, 3)

4

(4, 0), (4, 1), (4, 3), (4, 6)

(0, 4), (1, 4), (3, 4), (6, 4), (3, 1), (1, 3)

5

(5, 0), (5, 1), (5, 2), (5, 3), (5, 4), (5, 6)

(0, 5), (1, 5), (2, 5), (3, 5), (4, 5), (6, 5),

(3, 2), (4, 2), (2, 3), (2, 4)

6

(6, 0)

(0, 6).

10. The user equipment of claim 9 , wherein the PCell UL-DL configuration and the SCell UL-DL configuration are selected from among UL-DL configurations defined in Table 1-2 below:

TABLE 1-2

UL-DL configurations

Downlink-

to-Uplink

Uplink-

Switch-

downlink

point

Subframe number

configuration

periodicity

0

1

2

3

4

5

6

7

8

9

0

5 ms

D

S

U

U

U

D

S

U

U

U

1

5 ms

D

S

U

U

D

D

S

U

U

D

2

5 ms

D

S

U

D

D

D

S

U

D

D

3

10 ms 

D

S

U

U

U

D

D

D

D

D

4

10 ms 

D

S

U

U

D

D

D

D

D

D

5

10 ms 

D

S

U

D

D

D

D

D

D

D

6

5 ms

D

S

U

U

U

D

S

U

U

D

wherein D denotes a downlink subframe, S denotes a special subframe, and U denotes an uplink subframe.

11. The user equipment of claim 9 , wherein the interval ‘k i ’ε K, and K, {k 0 , k 1 , . . . k M−1 } for the subframe ‘n’ is defined in Table 1-3 below, K and M being integers:

TABLE 1-3

Downlink association set index K: {k 0 , k 1 , . . . k M−1 } for TDD

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

—

wherein the A/N responsive to the PDSCH transmitted in the subframe (n−k i ) (0≦i≦M−1) is transmitted in the subframe ‘n’.

12. The user equipment of claim 9 , further comprising:

The transmitter to transmit another A/N in an uplink subframe determined by a reference UL-DL configuration for the PCell, the another A/N being responsive to a PDSCH transmission on the PCell,

wherein the reference UL-DL configuration for the PCell is the PCell TDD UL-DL configuration.