IP Library › Granted Patent US 11,621,747
Granted Patent B2
US 11,621,747 · App. 15/707,901 · Granted Apr 4, 2023

Receiver beamforming for measurements

Inventors: Sumeeth Nagaraja (San Diego, CA); Tao Luo (San Diego, CA); Sony Akkarakaran (Poway, CA); Makesh Pravin John Wilson (San Diego, CA)
Assignee: QUALCOMM Incorporated
H04B7/043H04B7/06H04B7/0695H04B7/088H04B17/15H04B17/29H04B17/327H04B17/0085
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Quick Facts
Patent No.
US 11,621,747
App. No.
15/707,901
Granted
Apr 4, 2023
Kind
B2
Abstract

A wireless communications system may support beamforming to transmit and receive signals. A device operating within the wireless communications system may transmit a request to measure a beamformed reference signal. The device may also transmit a beamforming configuration indicating one or more beamforming options for measuring the beamformed reference signal. The beamforming options may include measuring the beamformed reference signal using a directional configuration and an omni-directional configuration. The device receiving the beamforming configuration may form a receive beam in accordance with the beamforming configuration to measure the beamformed reference signal. A device operating within the wireless communications system may determine to use a particular beamforming option for measuring a beamformed reference signal without first receiving a beamforming configuration, and may make the determination based on signal quality at the device or capabilities of the device.

Claims (61)

1. A method for wireless communication, comprising:

transmitting, to a user equipment (UE), a request to measure a beamformed reference signal;

transmitting, to the UE, a beamforming configuration indicating a plurality of beamformed measuring options for measuring the beamformed reference signal;

transmitting an activation message to activate one or more beamformed measuring options of the plurality of beamformed measuring options, the activated one or more beamformed measuring options indicating a beam pattern for measuring the beamformed reference signal, wherein the beam pattern indicates a directional receive parameter associated with the beamformed reference signal; and

transmitting the beamformed reference signal.

2. The method of claim 1 , wherein the plurality of beamformed measuring options include measuring the beamformed reference signal using a directional configuration and an omni-directional configuration.

3. The method of claim 2 , further comprising:

transmitting an indication of whether to use the directional configuration or the omni-directional configuration to measure the beamformed reference signal.

4. The method of claim 3 , wherein the indication indicates use of the omni-directional configuration when a signal quality is at or above a threshold, and indicates use of the directional configuration when the signal quality is below the threshold.

5. The method of claim 4 , wherein the indication indicates use of the omni-directional configuration when the signal quality measured using the omni-directional configuration or the directional configuration is at or above the threshold.

6. The method of claim 4 , wherein the indication indicates use of the directional configuration when the signal quality measured using the omni-directional configuration or the directional configuration is below the threshold.

7. The method of claim 4 , wherein the signal quality is based at least in part on a reference signal received power (RSRP), a reference signal received quality (RSRQ), a channel quality indicator (CQI), a signal-to-noise ratio (SNR), or a combination thereof.

8. The method of claim 3 , wherein the indication indicates a measuring beam shape to use to measure the beamformed reference signal, wherein the measuring beam shape comprises a beam width, an array gain, a beam direction, or a combination thereof.

9. The method of claim 3 , wherein the indication indicates use of the omni-directional configuration when the beamformed reference signal overlaps with a reference signal from a neighboring transmitter.

10. The method of claim 3 , wherein the indication indicates use of both the directional configuration and the omni-directional configuration.

11. The method of claim 3 , wherein the indication comprises a measuring beam sweep pattern that comprises a repeated reference signal in a plurality of symbols to indicate use of the omni-directional configuration.

12. The method of claim 3 , further comprising:

determining that a frequency of beam switches is at or above a threshold, wherein the indication indicates use of the omni-directional configuration based at least in part on the determination.

13. The method of claim 1 , wherein the plurality of beamformed measuring options includes a first configuration associated with a first measuring beam formable at the UE and a second configuration associated with a second measuring beam formable at the UE.

14. The method of claim 1 , wherein the beam pattern for measuring the beamformed reference signal is based at least in part on a transmitting beam pattern, and wherein the beamformed reference signal is transmitted in accordance with the transmitting beam pattern.

15. A method for wireless communication at a user equipment (UE), comprising:

receiving a request to measure a beamformed reference signal;

receiving a beamforming configuration indicating a plurality of beamformed measuring options for measuring the beamformed reference signal;

receiving an activation message to activate one or more beamformed measuring options of the plurality of beamformed measuring options, the activated one or more beamformed measuring options indicating a beam pattern for measuring the beamformed reference signal, wherein the beam pattern indicates a directional receive parameter associated with the beamformed reference signal; and

measuring the beamformed reference signal using the beam pattern based at last in part on the direction receive parameter.

16. The method of claim 15 , wherein the plurality of beamformed measuring options include measuring the beamformed reference signal using a directional configuration and an omni-directional configuration.

17. The method of claim 16 , further comprising:

receiving an indication of whether to use the directional configuration or the omni-directional configuration to measure the beamformed reference signal.

18. The method of claim 17 , further comprising:

determining to use the directional configuration if the indication indicates use of the directional configuration or determining to use the omni-directional configuration if the indication indicates use of the omni-directional configuration.

19. The method of claim 16 , further comprising:

transmitting a message indicating whether the directional configuration or the omni-directional configuration was used to measure the beamformed reference signal.

20. The method of claim 16 , further comprising:

transmitting a configuration request requesting a reference signal beam sweep type that is compatible with the omni-directional configuration.

21. An apparatus for wireless communication, comprising:

a processor;

memory coupled with the processor; and

instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:

transmit, to a user equipment (UE), a request to measure a beamformed reference signal;

transmit, to the UE, a beamforming configuration indicating a plurality of beamformed measuring options for measuring the beamformed reference signal;

transmit an activation message to activate one or more beamformed measuring options of the plurality of beamformed measuring options, the activated one or more beamformed measuring options indicating a beam pattern for measuring the beamformed reference signal, wherein the beam pattern indicates a directional receive parameter associated with the beamformed reference signal; and

transmit the beamformed reference signal.

22. The apparatus of claim 21 , wherein the plurality of beamformed measuring options include measuring the beamformed reference signal using a directional configuration and an omni-directional configuration.

23. The apparatus of claim 22 , wherein the instructions are further executable by the processor to:

transmit an indication of whether to use the directional configuration or the omni-directional configuration to measure the beamformed reference signal.

24. The apparatus of claim 23 , wherein the indication indicates use of the omni-directional configuration when a signal quality is at or above a threshold, and indicates use of the directional configuration when the signal quality is below the threshold.

25. The apparatus of claim 24 , wherein the signal quality is based at least in part on a reference signal received power (RSRP), a reference signal received quality (RSRQ), a channel quality indicator (CQI), a signal-to-noise ratio (SNR), or a combination thereof.

26. The apparatus of claim 23 , wherein the indication indicates a measuring beam shape to use to measure the beamformed reference signal, wherein the measuring beam shape comprises a beam width, an array gain, a beam direction, or a combination thereof.

27. An apparatus for wireless communication at a user equipment (UE), comprising:

a processor;

memory coupled with the processor; and

instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:

receive a request to measure a beamformed reference signal;

receive a beamforming configuration indicating a plurality of beamformed measuring options for measuring the beamformed reference signal;

receive an activation message to activate one or more beamformed measuring options of the plurality of beamformed measuring options, the activated one or more beamformed measuring options indicating a beam pattern for measuring the beamformed reference signal, wherein the beam pattern indicates a directional receive parameter associated with the beamformed reference signal; and

measure the beamformed reference signal using the beam pattern based at last in part on the direction receive parameter.

28. The apparatus of claim 27 , wherein the plurality of beamformed measuring options include measuring the beamformed reference signal using a directional configuration and an omni-directional configuration.

29. The apparatus of claim 28 , wherein the instructions are further executable by the processor to:

receive an indication of whether to use the directional configuration or the omni-directional configuration to measure the beamformed reference signal.

30. The apparatus of claim 29 , wherein the instructions are further executable by the processor to:

determine to use the directional configuration if the indication indicates use of the directional configuration or determining to use the omni-directional configuration if the indication indicates use of the omni-directional configuration.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 28, 2017
From: NAGARAJA, SUMEETH; LUO, TAO; AKKARAKARAN, SONY; JOHN WILSON, MAKESH PRAVIN
To: QUALCOMM INCORPORATED
Reel/Frame 044235/0062 →
Continuity (2)
Provisional Application 62414652 · Oct 28, 2016
Related Publication 20180123648A1 · May 3, 2018