Granted Patent B2

US 9,420,579 · App. 14/715,141 · Granted Aug 16, 2016

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

Assignee: LG ELECTRONICS INC.

H04W72/042H04L1/1607H04L1/1812H04L1/1861H04L1/1893H04L5/001H04L5/0053H04L5/0092H04L5/0094H04L5/1469H04W72/0446H04W72/0453H04L5/0016H04L5/0055

Abstract

Claims (412)

1. A method for transmitting control information in a communication system by a user equipment (UE) configured with a primary cell having uplink-downlink (UL-DL) configuration #0 and a secondary cell having one of UL-DL configurations #1 to #6, the method comprising:

receiving, by the UE, a downlink control information (DCI) format comprising resource allocation information and a downlink assignment index (DAI) field, for the secondary cell;

receiving, by the UE, a physical downlink shared channel (PDSCH) indicated by the DCI format through the secondary cell; and

transmitting, by the UE, hybrid automatic repeat request (HARQ)-acknowledgement (ACK) information for the PDSCH,

wherein if a carrier indicator field (CIF) is enabled in the DCI format, the DAI field is not used in a procedure for transmitting the HARQ-ACK information, regardless of the value of the DAI field in the DCI format, and

wherein subframe configurations according to the UL-DL configurations #0 to #6 are shown in the following table 1:

TABLE 1

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

where, D denotes a DL subframe, U denotes a UL subframe, and S denotes a special subframe.

2. The method of claim 1 , wherein if the CIF is disabled in the DCI format, the DAI field is used in the procedure for transmitting the HARQ-ACK information.

3. The method of claim 2 , wherein if the CIF is enabled in the DCI format, HARQ-ACK timing of UL-DL configuration of the secondary cell is used for transmission of the set of one or more HARQ-ACK bits for the secondary cell.

4. The method of claim 3 , wherein if the CIF is disabled in the DCI format, HARQ-ACK timing of UL-DL configuration of the primary cell is used for transmission of the set of one or more HARQ-ACK bits for the secondary cell.

5. The method of claim 1 , wherein the communication system is a 3rd generation partnership project (3GPP) wireless communication system.

6. A user equipment (UE) for use in a communication system, the UE comprising:

a radio frequency (RF) unit; and

a processor operatively connected to the RF unit and configured to, when a primary cell having uplink-downlink (UL-DL) configuration #0 and a secondary cell having one of UL-DL configurations #1 to #6 are configured:

receive a downlink control information (DCI) format comprising resource allocation information and a downlink assignment index (DAI) field, for the secondary cell,

receive a physical downlink shared channel (PDSCH) indicated by the DCI format through the secondary cell, and

transmit hybrid automatic repeat request (HARQ)-acknowledgement (ACK) information for the PDSCH,

wherein if a carrier indicator field (CIF) is enabled in the DCI format, the DAI field is not used in a procedure for transmitting the HARQ-ACK information, regardless of the value of the DAI field in the DCI format, and

wherein subframe configurations according to the UL-DL configurations #0 to #6 are shown in the following table 1:

TABLE 1

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

where, D denotes a DL subframe, U denotes a UL subframe, and S denotes a special subframe.

7. The UE of claim 6 , wherein if the CIF is disabled in the DCI format, the DAI field is used in the procedure for transmitting the HARQ-ACK information.

8. The method of claim 7 , wherein if the CIF is enabled in the DCI format, HARQ-ACK timing of UL-DL configuration of the secondary cell is used for transmission of the set of one or more HARQ-ACK bits for the secondary cell.

9. The method of claim 8 , wherein if the CIF is disabled in the DCI format, HARQ-ACK timing of UL-DL configuration of the primary cell is used for transmission of the set of one or more HARQ-ACK bits for the secondary cell.

10. The method of claim 1 , wherein the communication system is a 3rd generation partnership project (3GPP) wireless communication system.

11. A method for receiving control information in a wireless communication system by a base station (BS) from a user equipment (UE) configured with a primary cell having uplink-downlink (UL-DL) configuration and a secondary cell having one of UL-DL configurations #1 to #6, the method comprising:

transmitting, to the UE, a downlink control information (DCI) format comprising resource allocation information and a downlink assignment index (DAI) field, for the secondary cell;

transmitting, to the UE, a physical downlink shared channel (PDSCH) indicated by the DCI format through the secondary cell; and

receiving, from the UE, hybrid automatic repeat request (HARQ)-acknowledgement (ACK) information for the PDSCH,

wherein if a carrier indicator field (CIF) is enabled in the DCI format, the DAI field is not used in a procedure for receiving the HARQ-ACK information, regardless of the value of the DAI field in the DCI format, and

wherein subframe configurations according to the UL-DL configurations #0 to #6 are shown in the following table 1:

TABLE 1

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

where, D denotes a DL subframe, U denotes a UL subframe, and S denotes a special subframe.

12. The method of claim 11 , wherein if the CIF is disabled in the DCI format, the DAI field is used in the procedure for transmitting the HARQ-ACK information.

13. The method of claim 12 , wherein if the CIF is enabled in the DCI format, HARQ-ACK timing of UL-DL configuration of the secondary cell is used for reception of the set of one or more HARQ-ACK bits for the secondary cell.

14. The method of claim 13 , wherein if the CIF is disabled in the DCI format, HARQ-ACK timing of UL-DL configuration of the primary cell is used for reception of the set of one or more HARQ-ACK bits for the secondary cell.

15. The method of claim 11 , wherein the communication system is a 3rd generation partnership project (3GPP) wireless communication system.

16. A base station (BS) for use in a communication system, the BS comprising:

a radio frequency (RF) unit; and

a processor operatively connected to the RF unit and configured to, for a user equipment (UE) configured with a primary cell and a secondary cell:

transmit, to the UE, a downlink control information (DCI) format comprising resource allocation information and a downlink assignment index (DAI) field, for the secondary cell,

transmit, to the UE, a physical downlink shared channel (PDSCH) indicated by the DCI format through the secondary cell, and

receive, from the UE, hybrid automatic repeat request (HARQ)-acknowledgement (ACK) information for the PDSCH,

wherein if a carrier indicator field (CIF) is enabled in the DCI format, the DAI field is not used in a procedure for receiving the HARQ-ACK information, regardless of the value of the DAI field in the DCI format, and

wherein subframe configurations according to the UL-DL configurations #0 to #6 are shown in the following table 1:

TABLE 1

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

where, D denotes a DL subframe, U denotes a UL subframe, and S denotes a special subframe.

17. The BS of claim 16 , wherein if the CIF is disabled in the DCI format, the DAI field is used in the procedure for transmitting the HARQ-ACK information.

18. The BS of claim 17 , wherein if the CIF is enabled in the DCI format, HARQ-ACK timing of UL-DL configuration of the secondary cell is used for reception of the set of one or more HARQ-ACK bits for the secondary cell.

19. The BS of claim 18 , wherein if the CIF is disabled in the DCI format, HARQ-ACK timing of UL-DL configuration of the primary cell is used for reception of the set of one or more HARQ-ACK bits for the secondary cell.

20. The BS of claim 16 , wherein the communication system is a 3rd generation partnership project (3GPP) wireless communication system.

Assignments (1)

Priority Claims (1)

Continuity (9)