CQICH allocation request header for communicating feedback information

• US 20060250963A1
• Filed: 03/13/2006
• Published: 11/09/2006
• Est. Priority Date: 03/12/2005
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Chun, Jin-Young, Jin, Yong-Suk, Ihm, Bin-Chul
• Granted Patent: US 7,630,391 B2
• Time in Patent Office: Days
• US Class Current: 370/236
• 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 by 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, which is a robust 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:

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, which is a robust channel; and

performing communication with the base station upon bandwidth allocation according to the provided information.

2. The method of claim 1, wherein the provided information further indicates a feedback type.

3. The method of claim 1, wherein the information further indicates a time period related to providing a feedback report at certain time frames from the mobile station.

4. The method of claim 3, wherein the mobile station calculates the time period.

5. The method of claim 3, wherein the time period is initially requested or an adjustment of the time period is later requested.

6. The method of claim 3, wherein the feedback report includes SNR information.

7. The method of claim 1, wherein the providing step is performed if fast base station switching (FBSS) is performed.

8. The method of claim 7, wherein the FBSS comprises a step of performing anchor base station updating.

9. The method of claim 1, wherein the step of providing information is achieved by sending a MAC management header.

10. The method of claim 9, wherein the MAC management header is a bandwidth request header.

11. The method of claim 10, wherein the bandwidth request header is a channel quality information channel (CQICH) allocation request header.

12. The method of claim 1, wherein the information allows backward compatibility.

13. The method of claim 1, wherein the step of performing communication comprises performing feedback with the base station according to the bandwidth allocation.

14. The method of claim 13, wherein the feedback type is at least one of a group comprising downlink information or antenna information, pre-coding information, channel matrix information, and power control information.

15. The method of claim 1, wherein the fast feedback channel is a channel quality information channel (CQICH).

16. The method of claim 1, wherein the steps are applicable to at least one of OFDMA, OFDM, WiMAX, and 4G communication systems.

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

determining whether bandwidth allocation is required;

providing, to a base station according to the determining, information about bandwidth allocation for a robust channel used for feedback, and about a time period related to providing a feedback report to the base station at certain time frames; and

performing communication with the base station upon bandwidth allocation according to the provided information.

18. The method of claim 17, wherein the robust channel is a fast feedback channel.

19. The method of claim 17, wherein the mobile station calculates the time period.

20. The method of claim 17, wherein the time period is initially requested or an adjustment of the time period is later requested.

21. A 6-byte protocol data unit (PDU) used for medium access control (MAC) management, the PDU comprising:

a first byte containing information about a fast feedback channel;

a second byte containing bits used for FSBB indication, a period indication, and reserved use; and

additional bytes containing reserved bits, bits for CID and bits for HCS.

22. The PDU of claim 21, wherein the first byte additionally contains information about a feedback type.

23. The PDU of claim 21, wherein the first byte comprises 3 bits that indicate a CQICH allocation request.

24. The PDU of claim 21, wherein the first byte comprises 3 bits that indicate the feedback type.

25. The PDU of claim 21, wherein the second byte comprises 4 bits that indicate the number of CQI channels.

26. The PDU of claim 21, wherein the second byte comprises 1 bit that indicates fast base station switching.

27. The PDU of claim 21, wherein the second byte comprises at least 3 bits that indicate a preferred feedback period.

28. A medium access control management header comprising:

a first byte containing information related to a feedback channel and a feedback type; and

additional bytes containing information related to at least a feedback period to be used when performing feedback via the feedback channel.