System and method for determination of a dynamic beam list

Patent metadata

Field	Value
Publication number	US-11523394-B2
Application number	US-202016775213-A
Country	US
Kind code	B2
Filing date	Jan 28, 2020
Priority date	May 31, 2019
Publication date	Dec 6, 2022
Grant date	Dec 6, 2022

Abstract

A UE may be configured to select narrower or wider beams that may be suitable for use with a current UE mobility, scattering environment, etc. The UE may track changes to an identified beam of a certain width, and so may recover from tracking or other radio link failures by switching to a beam that is spatially adjacent or to a beam of a different width. The UE may identify a first beam associated with a first beam width based on at least one reference signal received by the UE. The UE may further determine a set of beams based on the first beam width that is associated with the identified first beam, and the determined set of beams may include at least one beam corresponding to the first beam width. The UE may further measure respective channel qualities associated with each beam of the determined set of beams.

First claim

What is claimed is:

1. A method of wireless communication by a user equipment (UE), comprising:
identifying a first beam width based on at least one reference signal received by the UE using a first UE beam, the first UE beam having one or more child beams or one or more parent beams and the first beam width corresponding to first UE beam;
determining a set of beams based on identifying the first beam width; and
measuring respective channel qualities associated with each beam of the determined set of beams.

2. The method of claim 1 , wherein the determining the set of beams is based on a lowermost allowable beam width.

3. The method of claim 1 , further comprising:
determining whether to include, in the set of beams, beams corresponding to a second beam width or beams corresponding to a third beam width, the second beam width being narrower than the first beam width and the third beam width being wider than the first beam width.

4. The method of claim 3 , wherein the determining whether to include, in the determined set of beams, the beams corresponding to the second beam width or the beams corresponding to the third beam width is based on a status of the UE.

5. The method of claim 4 , wherein the status of the UE is at least partially based on a mobility of the UE.

6. The method of claim 3 , wherein the first UE beam corresponding to the first beam width spatially contains the one or more child beams corresponding to the second beam width.

7. The method of claim 3 , wherein at least one third beam corresponding to the third beam width spatially contains the first UE beam, wherein the one or more parent beams comprise the at least one third beam.

8. The method of claim 1 , wherein the determining the set of beams based on identifying the first beam width is further based on a status of the UE.

9. The method of claim 1 , wherein the first UE beam comprises a current serving beam on which the UE communicates with a base station.

10. The method of claim 9 , further comprising:
switching the current serving beam from the first UE beam to a second UE beam that is included in the determined set of beams.

11. The method of claim 10 , wherein the switching the current serving beam is based on the respective channel qualities measured by the UE.

12. The method of claim 1 , further comprising:
reporting at least one of the respective channel qualities to a base station when configured for measurement reporting.

13. An apparatus for wireless communication by a user equipment (UE), comprising:
means for identifying a first beam width based on at least one reference signal received by the UE using a first UE beam, the first UE beam having one or more child beams or one or more parent beams and the first beam width corresponding to first UE beam;
means for determining a set of beams based on identification of the first beam width; and
means for measuring respective channel qualities associated with each beam of the determined set of beams.

14. The apparatus of claim 13 , wherein the means for determining the set of beams is configured to determine the set of beams based on a minimum allowable beam width.

15. The apparatus of claim 13 , further comprising:
means for determining whether to include, in the set of beams, beams corresponding to a second beam width or beams corresponding to a third beam width,
the second beam width being narrower than the first beam width and the third beam width being wider than the first beam width.

16. The apparatus of claim 15 , wherein the means for determining whether to include, in the determined set of beams, the beams corresponding to the second beam width or the beams corresponding to the third beam width is configured to determine whether to include the beams corresponding to the second beam width or the beams corresponding to the third beam width based on a status of the UE.

17. The apparatus of claim 16 , wherein the status of the UE is at least partially based on a mobility of the UE.

18. The apparatus of claim 15 , wherein the first UE beam corresponding to the first beam width spatially contains the one or more child beams corresponding to the second beam width.

19. The apparatus of claim 15 , wherein at least one third beam corresponding to the third beam width spatially contains the first UE beam, wherein the one or more parent beams comprise the at least one third beam.

20. The apparatus of claim 13 , wherein the means for determining the set of beams based on identification of the first beam width is configured to determine the set of beams further based on a status of the UE.

21. The apparatus of claim 13 , wherein the first UE beam comprises a current serving beam on which the UE communicates with a base station.

22. The apparatus of claim 21 , further comprising:
means for switching the current serving beam from the first UE beam to a second UE beam that is included in the determined set of beams.

23. The apparatus of claim 22 , wherein the means for switching the current serving beam is configured to switch the current serving beam based on the respective channel qualities.

24. The apparatus of claim 13 , further comprising:
means for reporting at least one of the respective channel qualities to a base station when the UE is configured for measurement reporting.

25. An apparatus for wireless communication by a user equipment (UE), comprising:
a memory; and
at least one processor coupled to the memory and configured to:
identify a first beam width based on at least one reference signal received by the UE using a first UE beam, the first UE beam having one or more child beams or one or more parent beams and the first beam width corresponding to first UE beam;
determine a set of beams based on identification of the first beam width; and
measure respective channel qualities associated with each beam of the determined set of beams.

26. The apparatus of claim 25 , wherein the determination of the set of beams is based on a lowermost allowable beam width.

27. The apparatus of claim 25 , wherein the at least one processor is further configured to:
determine whether to include, in the set of beams, beams corresponding to a second beam width or beams corresponding to a third beam width, the second beam width being narrower than the first beam width and the third beam width being wider than the first beam width.

28. The apparatus of claim 27 , wherein the determination of whether to include, in the determined set of beams, the beams corresponding to the second beam width or the beams corresponding to the third beam width is based on a status of the UE.

29. The apparatus of claim 28 , wherein the status of the UE is at least partially based on a mobility of the UE.

30. A non-transitory, computer-readable medium storing computer- executable code for wireless communication by a user equipment (UE), the code when executed by a processor cause the processor to:
identify a first beam width based on at least one reference signal received by the UE using a first UE beam, the first UE beam having one or more child beams or one or more parent beams and the first beam width corresponding to first UE beam;
determine a set of beams based on identification of the first beam width; and
measure respective channel qualities associated with each beam of the determined set of beam

Assignees

• Qualcomm Inc

Inventors

• Laghate Mihir Vijay
• Challa Raghu Narayan
• Zhu Jun
• Cai Mingming
• Li Yong
• He Ruhua

Classifications

• H04W16/28

  using beam steering · CPC title

• H04W24/10

  Scheduling measurement reports {; Arrangements for measurement reports} · CPC title

• H04W72/046 Primary

  the resource being in the space domain, e.g. beams · CPC title

• H04W36/0085

  Hand-off measurements · CPC title

• H04B7/088 Primary

  using beam selection · CPC title