Beamforming report structure

• US 10,383,092 B2
• Filed: 11/02/2016
• Issued: 08/13/2019
• Est. Priority Date: 11/03/2015
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Vermani, Sameer, Tian, Bin, Chen, Jialing Li
• Primary Examiner(s): Wong, Xavier Szewai
• Application Number:
  US15/341,982
• Publication Number:
  US 20170127385A1
• Time in Patent Office: 1,014 Days
• CPC Class Codes: H04B 7/0413 MIMO systems
• CPC Class Codes: H04B 7/0417 Feedback systems
• CPC Class Codes: H04B 7/0617 for beam forming
• CPC Class Codes: H04B 7/0626 Channel coefficients, e.g. channel state information [CSI]
• CPC Class Codes: H04B 7/0634 Antenna weights or vector/matrix coefficients
• CPC Class Codes: H04B 7/0643 Feedback on request
• CPC Class Codes: H04W 72/04 Wireless resource allocation

Abstract

Aspects of the present disclosure provide techniques for sounding procedures and feedback report formats.

Claims

1. A method for wireless communications, comprising:

generating one or more frames, collectively having one or more training fields allowing one or more stations to calculate channel information and an indication of resources for the one or more stations to use for feeding back the channel information via a report, wherein the one or more frames comprise information indicating one or more resource units (RUs) for which channel information is requested and each RU comprises one or more tones;

transmitting the one or more frames and an indication of the types of channel information parameters to include in the report; and

receiving, on the indicated resources, the channel information from at least one of the stations calculated for the one or more RUs based on the one or more training fields, wherein;

the channel information is received via the report;

the report includes a plurality of channel information parameters for each of the one or more RUs; and

the plurality of channel information parameters are based on the indicated types of channel information parameters.

2. The method of claim 1, wherein the indication is signaled via a multiple input multiple output (MIMO) control field.

3. The method of claim 1, wherein the one or more frames comprise:

at least one announcement frame and at least one trigger frame.

4. The method of claim 3, wherein the announcement frame comprises information indicating the one or more RUs.

5. The method of claim 3, wherein the trigger frame comprises information indicating the one or more RUs.

6. The method of claim 3, wherein:

the announcement frame comprises first partial information; and

the trigger frame comprises second partial information, wherein the first and second partial information collectively indicate the one or more reporting units.

7. The method of claim 1, wherein the report comprises compressed V-matrix information.

8. The method of claim 7, wherein:

the report comprises compressed V-matrix information for the one or more tones of each of the one or more RUs.

9. A method for wireless communications, comprising:

receiving one or more frames, collectively having one or more training fields allowing one or more stations to calculate channel information and an indication of resources for the one or more stations to use for feeding back the channel information via a report, wherein;

the one or more frames comprise information indicating one or more resource units (RUs) for which the channel information is requested; and

each RU comprises one or more tones;

receiving signaling providing an indication of types of channel information parameters to include in the report;

generating the channel information for the one or more RUs based on the one or more training fields; and

transmitting the channel information via the report, wherein the report includes a plurality of channel information parameters for each of the one or more RUs, and the one or more channel information parameters are based on the indicated types of channel information parameters.

10. The method of claim 9, wherein the indication is received via a multiple input multiple output (MEMO) control field.

11. The method of claim 9, wherein the one or more frames comprise:

at least one announcement frame and at least one trigger frame.

12. The method of claim 11, wherein the announcement frame comprises information indicating the one or more RUs.

13. The method of claim 11, wherein the trigger frame comprises information indicating the one or more RUs.

14. The method of claim 11, wherein:

the announcement frame comprises first partial information; and

the trigger frame comprises second partial information, wherein the first and second partial information collectively indicate the one or more RUs.

15. The method of claim 9, wherein the report comprises compressed V-matrix information.

16. The method of claim 15, wherein:

the report comprises compressed V-matrix information for the one or more tones of each of the one or more RUs.

17. An apparatus for wireless communications, comprising:

a memory; and

at least one processor coupled with the memory and configured to;

generate one or more frames, collectively having one or more training fields allowing one or more stations to calculate channel information and an indication of resources for the one or more stations to use for feeding back the channel information via a report, wherein the one or more frames comprise information indicating one or more resource units (RUs) for which channel information is requested and each RU comprises one or more tones;

transmit the one or more frames and an indication of the types of channel information parameters to include in the report; and

receive, on the indicated resources, the channel information from at least one of the stations calculated for the one or more RUs based on the one or more training fields, wherein;

the channel information is received via the report;

the report includes a plurality of channel information parameters for each of the one or more RUs; and

the plurality of channel information parameters are based on the indicated types of channel information parameters.

18. The apparatus of claim 17, wherein the indication is signaled via a multiple input multiple output (MIMO) control field.

19. The apparatus of claim 17, wherein the one or more frames comprise:

at least one announcement frame and at least one trigger frame.

20. The apparatus of claim 19, wherein the announcement frame comprises information indicating the one or more RUs.

21. An apparatus for wireless communications, comprising:

a memory; and

at least one processor coupled with the memory and configured to;

receive one or more frames, collectively having one or more training fields allowing one or more stations to calculate channel information and an indication of resources for the one or more stations to use for feeding back the channel information via a report, wherein;

the one or more frames comprise information indicating one or more resource units (RUs) for which the channel information is requested; and

each RU comprises one or more tones;

receive signaling providing an indication of types of channel information parameters to include in the report;

generate the channel information for the one or more RUs based on the one or more training fields; and

transmit the channel information via the report, wherein the report includes a plurality of channel information parameters for each of the one or more RUs, and the one or more channel information parameters are based on the indicated types of channel information parameters.

22. The apparatus of claim 21, wherein the indication is signaled via a multiple input multiple output (MIMO) control field.

23. The apparatus of claim 22, wherein the one or more frames comprise:

at least one announcement frame and at least one trigger frame.

24. The apparatus of claim 23, wherein the announcement frame comprises information indicating the one or more RUs.