BEAMFORMING REPORT STRUCTURE

• US 20170127385A1
• Filed: 11/02/2016
• Published: 05/04/2017
• 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
• Granted Patent: US 10,383,092 B2
• Time in Patent Office: 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 each device to use for feeding back the channel information;

transmitting the one or more frames; and

receiving, on the indicated resources, channel information from at least one of the stations calculated for a corresponding one or more reporting units based on the one or more training fields, wherein the channel information is received via a report containing a plurality of channel information parameters for each of the one or more reporting units.

2. The method of claim 1, further comprising signaling an indication of the types of channel information parameters to include in the report.

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

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

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

5. The method of claim 4, wherein the announcement frame comprises information indicating the one or more reporting units.

6. The method of claim 4, wherein the trigger frame comprises information indicating the one or more reporting units.

7. The method of claim 4, 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.

8. The method of claim 1, wherein:

the one or more reporting units comprise one or more resource units (RUs); and

the report comprises a plurality of channel information parameters for each RU.

9. The method of claim 8, wherein the report comprises compressed V-matrix information.

10. The method of claim 10, wherein:

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

11. 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 each device to use for feeding back the channel information;

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

transmitting the channel information via a report containing one or more channel information parameters for each of the one or more reporting units.

12. The method of claim 11, further comprising receiving signaling providing an indication of types of channel information parameters to include in the report.

13. The method of claim 11, further comprising:

providing, via a multiple input multiple output (MIMO) control field, signaling indicating types of channel information parameters included in the report.

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

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

15. The method of claim 14, wherein the announcement frame comprises information indicating the one or more reporting units.

16. The method of claim 14, wherein the trigger frame comprises information indicating the one or more reporting units.

17. The method of claim 14, 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.

18. The method of claim 11, wherein:

the one or more reporting units comprise one or more resource units (RUs); and

the report comprises a plurality of channel information parameters for each RU.

19. The method of claim 18, wherein the report comprises compressed V-matrix information.

20. The method of claim 19, wherein:

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

21. 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 each device to use for feeding back the channel information;

transmit the one or more frames; and

receive, on the indicated resources, channel information from at least one of the stations calculated for a corresponding one or more reporting units based on the one or more training fields, wherein the channel information is received via a report containing a plurality of channel information parameters for each of the one or more reporting units.

22. The apparatus of claim 21, wherein the at least one processor is further configured to signal an indication of the types of channel information parameters to include in the report.

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

24. The apparatus of claim 21, wherein the one or more frames comprise:

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

25. The apparatus of claim 24, wherein the announcement frame comprises information indicating the one or more reporting units.

26. 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 each device to use for feeding back the channel information;

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

transmit the channel information via a report containing one or more channel information parameters for each of the one or more reporting units.

27. The apparatus of claim 26, wherein the at least one processor is further configured to receive signaling providing an indication of the types of channel information parameters to include in the report.

28. The apparatus of claim 26, wherein the indication is signaled via a multiple input multiple output (MIMO) control field.

29. The apparatus of claim 28, wherein the one or more frames comprise:

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

30. The apparatus of claim 29, wherein the announcement frame comprises information indicating the one or more reporting units.