Method and apparatus for transmitting downlink control information for resource allocation in a wireless communication system

• US 8,718,662 B2
• Filed: 03/28/2011
• Issued: 05/06/2014
• Est. Priority Date: 03/26/2010
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Shan, Cheng, Han, Jin Kyu, Kim, Youn Sun
• Primary Examiner(s): Alam, Fayyaz
• Application Number:
  US13/073,516
• Publication Number:
  US 20110237283A1
• Time in Patent Office: 1,135 Days
• Field of Search: 455450-455
• US Class Current: 455/450
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0091 Signaling for the administration of the divided path
• CPC Class Codes: H04W 72/0466 the resource being a scrambling code
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/563 of the wireless resources

Abstract

A method and apparatus for transmitting and receiving Downlink Control Information (DCI) in a wireless communication system. A method for transmitting DCI by a base station includes generating DCI including at least one of a data resource allocation indicator, a data format indicator for at least one Transport Block (TB), and a DeModulation Reference Signal (DMRS) resource allocation indicator corresponding to the at least one TB; and sending the DCI to a terminal. The DMRS resource allocation indicator includes a rank pattern for the at least one TB, an allocated scrambling code type, and DMRS port information.

Claims

1. A method for transmitting Downlink Control Information (DCI) by a base station in a wireless communication system, the method comprising the steps of:

generating DCI including at least one of a data resource allocation indicator, a data format indicator for at least one Transport Block (TB), and a DeModulation Reference Signal (DMRS) resource allocation indicator corresponding to the at least one TB; and

sending the DCI to a terminal,

wherein the DMRS resource allocation indicator includes a rank pattern for the at least one TB, an allocated scrambling code type, and DMRS port information.

2. The method of claim 1, wherein the DMRS resource allocation indicator is indexed according to:

3. The method of claim 1, wherein the terminal is allocated resources in a unit of one of a localized or distributed Resource Block (RB) group, a localized RB, and a localized RB group.

4. The method of claim 1, wherein the DCI further includes at least one of resource allocation information, data format information, and an indicator for use of an entire control information included in a last DCI transmitted to the terminal.

5. The method of claim 1, further comprising providing Hybrid Automatic Repeat Request (HARQ) type indication information using one of the DCI and a higher layer signaling.

6. A method for receiving Downlink Control Information (DCI) in a terminal in a wireless communication system, the method comprising:

receiving DCI transmitted from a base station, the DCI including at least one of a data resource allocation indicator, a data format indicator for at least one Transport Block (TB), and a Demodulation Reference Signal (DMRS) resource allocation indicator corresponding to the at least one TB; and

processing the DCI,

wherein the DMRS resource allocation indicator includes a rank pattern for the at least one TB, an allocated scrambling code type, and DMRS port information.

7. The method of claim 6, wherein the DMRS resource allocation indicator is indexed according to:

8. The method of claim 6, wherein the terminal is allocated resources in a unit of one of a localized or distributed Resource Block (RB) group, a localized RB, and a localized RB group.

9. The method of claim 6, wherein the DCI further includes at least one of resource allocation information, data format information, and indicator for use of entire control information included in a last DCI transmitted to the terminal.

10. The method of claim 6, further comprising acquiring Hybrid Automatic Repeat Request (HARQ) type indication information from the base station by using one of the DCI and higher layer signaling.

11. A base station for transmitting Downlink Control Information (DCI) in a wireless communication system, the base station comprising:

a control unit that generates DCI including at least one of a data resource allocation indicator, a data format indicator for at least one Transport Block (TB), and a Demodulation Reference Signal (DMRS) resource allocation indicator corresponding to the at least one TB; and

a radio frequency unit that sends the DCI to a terminal,

wherein the DMRS resource allocation indicator includes a rank pattern for the at least one TB, an allocated scrambling code type, and DMRS port information.

12. The base station of claim 11, wherein the DMRS resource allocation indicator is indexed according to:

13. The base station of claim 11, wherein the control unit allocates resources to the terminal in a unit of one of a localized or distributed Resource Block (RB) group, a localized RB, and a localized RB group.

14. The base station of claim 11, wherein the DCI further comprises at least one of:

resource allocation information;

data format information; and

an indicator for using entire control information included in a last DCI transmitted to the terminal.

15. The base station of claim 11, wherein the control unit provides Hybrid Automatic Repeat Request (HARQ) type indication information by using one of the DCI and higher layer signaling.

16. A terminal for receiving and processing Downlink Control Information (DCI) in a wireless communication system, the terminal comprising:

a radio frequency unit that receives DCI transmitted from a base station, the DCI including at least one of a data resource allocation indicator, a data format indicator for at least one Transport Block (TB), and a Demodulation Reference Signal (DMRS) resource allocation indicator corresponding to the at least one TB; and

a control unit that processes the DCI,

wherein the DMRS resource allocation indicator includes a rank pattern for the at least one TB, an allocated scrambling code type, and DMRS port information.

17. The terminal of claim 16, wherein the DMRS resource allocation indicator is indexed according to:

18. The terminal of claim 16, wherein the terminal is allocated resources in a unit of one of a localized or distributed Resource Block (RB) group, a localized RB, and a localized RB group.

19. The terminal of claim 16, wherein the control information further comprises at least one of:

resource allocation information;

data format information; and

an indicator for using entire control information included in a last DCI transmitted to the terminal.

20. The terminal of claim 16, wherein the control unit acquires Hybrid Automatic Repeat Request (HARQ) type indication information from the base station by using one of the DCI and higher layer signaling.