CQICH allocation request header for communicating feedback information

• US 8,559,454 B2
• Filed: 09/23/2011
• Issued: 10/15/2013
• Est. Priority Date: 03/12/2005
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Jin, Yong-Suk, Ihm, Bin-Chul, Chun, Jin-Young
• Primary Examiner(s): MEW, KEVIN D
• Application Number:
  US13/244,274
• Publication Number:
  US 20120014340A1
• Time in Patent Office: 753 Days
• Field of Search: 370/389, 370/392, 370400-401, 370431-432, 370/465, 370/468
• US Class Current: 370/431
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network

Abstract

A method of communicating feedback information between a mobile station and a base station comprises determining a need to request bandwidth allocation; providing information to a base station according to the determining, wherein the information indicates bandwidth allocation for a fast feedback channel; and performing communication with the base station upon bandwidth allocation according to the provided information.

Claims

1. A method of communicating feedback information between a mobile station and a base station, the method comprising:

sending, to the base station, a Channel Quality Information Channel (CQICH) allocation request header to request a CQICH allocation, the CQICH allocation request header comprising a feedback type, a fast base station switching (FBSS) indicator and a preferred period;

receiving, from the base station, CQICH allocation information; and

sending, to the base station, the feedback information on an allocated CQICH.

2. The method of claim 1, wherein the CQICH allocation information is received via at least a CQICH_Allocation Information Element (IE), a CQICH_Allocation_Enhanced_Allocation Information Element (IE) or a fast-feedback allocation sub-header.

3. The method of claim 2, wherein the fast-feedback allocation sub-header includes a feedback type to indicate at least fast DL measurement, fast MIMO feedback or MIMO mode/permutation mode feedback.

4. The method of claim 2, wherein the fast-feedback allocation sub-header is used when data exists for transmission on a downlink.

5. The method of claim 1, wherein the feedback information is channel quality information (CQI).

6. The method of claim 1, wherein the feedback type comprises at least downlink signal strength, a downlink measurement/precoding matrix codebook, quantized precoding weight feedback, an index to a precoding matrix in a codebook or channel matrix information.

7. The method of claim 1, further comprising setting the FBSS indicator when the mobile station requests CQICH during FBSS handover.

8. The method of claim 1, wherein the CQICH allocation information is received in order to receive one or more CQICH channels.

9. A mobile station for transmitting feedback information to a base station, the mobile station configured to:

send, to the base station, a Channel Quality Information Channel (CQICH) allocation request header to request a CQICH allocation, the CQICH allocation request header comprising a feedback type, a fast base station switching (FBSS) indicator and a preferred period;

receive, from the base station, CQICH allocation information; and

send, to the base station, the feedback information on an allocated CQICH.

10. The mobile station of claim 9, wherein the CQICH allocation information is received via at least a CQICH_Allocation Information Element (IE), a CQICH_Allocation_Enhanced_Allocation Information Element (IE) or a fast-feedback allocation sub-header.

11. The mobile station of claim 10, wherein the fast-feedback allocation sub-header includes a feedback type to indicate at least fast DL measurement, fast MIMO feedback or MIMO mode/permutation mode feedback.

12. The mobile station of claim 9, wherein the feedback information is channel quality information (CQI).

13. The mobile station of claim 9, wherein the feedback type comprises at least downlink signal strength, a downlink measurement/precoding matrix codebook, quantized precoding weight feedback, an index to a precoding matrix in a codebook or channel matrix information.

14. The mobile station of claim 9, wherein the FBSS indicator is set when the mobile station requests CQICH during FBSS handover.