IP Library › Granted Patent US 11,490,270
Granted Patent B2
US 11,490,270 · App. 17/123,934 · Granted Nov 1, 2022

Apparatus and methods for measuring beams during mobility in wireless communications

Inventors: Yue Hong (San Diego, CA); Yuanbo Wang (San Diego, CA); Viswanath Sankaran (San Diego, CA)
Assignee: QUALCOMM Incorporated
H04W16/28H04B7/0695H04W24/10H04W36/06
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Quick Facts
Patent No.
US 11,490,270
App. No.
17/123,934
Granted
Nov 1, 2022
Kind
B2
Abstract

Some aspects described herein relate to performing a serving beam switch from a first serving beam to a second serving beam, and switching, for an inter-frequency procedure and based on one or more spatial correlation parameters associated with the first serving beam and second serving beam, from a first inter-frequency beam to a second inter-frequency beam to use in the inter-frequency procedure.

Claims (41)

1. A method for wireless communication, comprising:

performing, based on an intra-frequency beam sweep, a serving beam switch from a first serving beam used in communicating with a serving node to a second serving beam to use in communicating with the serving node; and

switching, for an inter-frequency procedure, based on performing the serving beam switch, and based on one or more spatial correlation parameters associated with the first serving beam and the second serving beam, from a first inter-frequency beam to a second inter-frequency beam to use in performing the inter-frequency procedure.

2. The method of claim 1 , further comprising determining, based on the serving beam switch, the one or more spatial correlation parameters between the first serving beam and the second serving beam.

3. The method of claim 1 , wherein the performing the serving beam switch is associated with an intra-frequency procedure.

4. The method of claim 1 , wherein the one or more spatial correlation parameters indicate a relative change in spatial direction between beams.

5. The method of claim 1 , wherein the inter-frequency procedure includes performing an inter-frequency beam sweep over each of multiple beams, wherein switching from the first inter-frequency beam to the second inter-frequency beam is based at least in part on a determination that one or more first values of the one or more spatial correlation parameters between a previously measured beam and the first inter-frequency beam are within a threshold difference of one or more second values of the one or more spatial correlation parameters associated with the first serving beam and the second serving beam.

6. The method of claim 5 , wherein the first inter-frequency beam corresponds to a current measurement gap during the inter-frequency beam sweep, and wherein switching from the first inter-frequency beam to the second inter-frequency beam includes skipping measurement of the first inter-frequency beam to instead measure the second inter-frequency beam during the current measurement gap.

7. The method of claim 1 , wherein the inter-frequency procedure includes inter-frequency handover based on the first inter-frequency beam, wherein switching from the first inter-frequency beam to the second inter-frequency beam is based at least in part on a determination that one or more first values of the one or more spatial correlation parameters between the first inter-frequency beam and the second inter-frequency beam are within a threshold difference of one or more second values of the one or more spatial correlation parameters associated with the first serving beam and the second serving beam.

8. The method of claim 7 , wherein switching from the first inter-frequency beam to the second inter-frequency beam includes selecting the second inter-frequency beam instead of the first inter-frequency beam for communicating one or more messages as part of the inter-frequency handover.

9. The method of claim 1 , wherein the performing the serving beam switch is based on a rotation of a device that performs the serving beam switch.

10. The method of claim 1 , further comprising performing a serving beam sweep over each of multiple beams, wherein the serving beam switch results from detecting the second serving beam during the serving beam sweep.

11. An apparatus for wireless communication, comprising:

a transceiver;

a memory configured to store instructions; and

one or more processors communicatively coupled with the transceiver and the memory, wherein the one or more processors are configured to:

perform, based on an intra-frequency beam sweep, a serving beam switch from a first serving beam used in communicating with a serving node to a second serving beam to use in communicating with the serving node; and

switch, for an inter-frequency procedure, based on performing the serving beam switch, and based on one or more spatial correlation parameters associated with the first serving beam and the second serving beam, from a first inter-frequency beam to a second inter-frequency beam to use in performing the inter-frequency procedure.

12. The apparatus of claim 11 , wherein the one or more processors are further configured to determine, based on the serving beam switch, the one or more spatial correlation parameters between the first serving beam and the second serving beam.

13. The apparatus of claim 11 , wherein the one or more processors are configured to perform the serving beam switch associated with an intra-frequency procedure.

14. The apparatus of claim 11 , wherein the one or more spatial correlation parameters indicate a relative change in spatial direction between beams.

15. The apparatus of claim 11 , wherein the inter-frequency procedure includes performing an inter-frequency beam sweep over each of multiple beams, wherein wherein the one or more processors are configured to switch from the first inter-frequency beam to the second inter-frequency beam based at least in part on a determination that one or more first values of the one or more spatial correlation parameters between a previously measured beam and the first inter-frequency beam are within a threshold difference of one or more second values of the one or more spatial correlation parameters associated with the first serving beam and the second serving beam.

16. The apparatus of claim 15 , wherein the first inter-frequency beam corresponds to a current measurement gap during the inter-frequency beam sweep, and wherein the one or more processors are configured to switch from the first inter-frequency beam to the second inter-frequency beam at least in part by skipping measurement of the first inter-frequency beam to instead measure the second inter-frequency beam during the current measurement gap.

17. The apparatus of claim 11 , wherein the inter-frequency procedure includes inter-frequency handover based on the first inter-frequency beam, wherein the one or more processors are configured to switch from the first inter-frequency beam to the second inter-frequency beam based at least in part on a determination that one or more first values of the one or more spatial correlation parameters between the first inter-frequency beam and the second inter-frequency beam are within a threshold difference of one or more second values of the one or more spatial correlation parameters associated with the first serving beam and the second serving beam.

18. The apparatus of claim 17 , wherein the one or more processors are configured to switch from the first inter-frequency beam to the second inter-frequency beam at least in part by selecting the second inter-frequency beam instead of the first inter-frequency beam for communicating one or more messages as part of the inter-frequency handover.

19. The apparatus of claim 11 , wherein the one or more processors are configured to perform the serving beam switch based on a rotation of a device that performs the serving beam switch.

20. The apparatus of claim 11 , wherein the one or more processors are configured to perform a serving beam sweep over each of multiple beams, wherein the serving beam switch results from detecting the second serving beam during the serving beam sweep.

21. An apparatus for wireless communication, comprising:

means for performing, based on an intra-frequency beam sweep, a serving beam switch from a first serving beam used in communicating with a serving node to a second serving beam to use in communicating with the serving node; and

means for switching, for an inter-frequency procedure, based on performing the serving beam switch, and based on one or more spatial correlation parameters associated with the first serving beam and the second serving beam, from a first inter-frequency beam to a second inter-frequency beam to use in performing the inter-frequency procedure.

22. The apparatus of claim 21 , further comprising means for determining, based on the serving beam switch, the one or more spatial correlation parameters between the first serving beam and the second serving beam.

23. The apparatus of claim 21 , wherein the means for performing performs the serving beam switch is associated with an intra-frequency procedure.

24. The apparatus of claim 21 , wherein the one or more spatial correlation parameters indicate a relative change in spatial direction between beams.

25. The apparatus of claim 21 , wherein the inter-frequency procedure includes performing an inter-frequency beam sweep over each of multiple beams, wherein the means for switching switches from the first inter-frequency beam to the second inter-frequency beam based at least in part on a determination that one or more first values of the one or more spatial correlation parameters between a previously measured beam and the first inter-frequency beam are within a threshold difference of one or more second values of the one or more spatial correlation parameters associated with the first serving beam and the second serving beam.

26. A non-transitory computer-readable medium, comprising code executable by one or more processors for wireless communication, the code comprises code for:

performing, based on an intra-frequency beam sweep, a serving beam switch from a first serving beam used in communicating with a serving node to a second serving beam to use in communicating with the serving node; and

switching, for an inter-frequency procedure, based on performing the serving beam switch, and based on one or more spatial correlation parameters associated with the first serving beam and the second serving beam, from a first inter-frequency beam to a second inter-frequency beam to use in performing the inter-frequency procedure.

27. The non-transitory computer-readable medium of claim 26 , further comprising code for determining, based on the serving beam switch, the one or more spatial correlation parameters between the first serving beam and the second serving beam.

28. The non-transitory computer-readable medium of claim 26 , wherein the code for performing performs the serving beam switch is associated with an intra-frequency procedure.

29. The non-transitory computer-readable medium of claim 26 , wherein the one or more spatial correlation parameters indicate a relative change in spatial direction between beams.

30. The non-transitory computer-readable medium of claim 26 , wherein the inter-frequency procedure includes performing an inter-frequency beam sweep over each of multiple beams, wherein the code for switching switches from the first inter-frequency beam to the second inter-frequency beam based at least in part on a determination that one or more first values of the one or more spatial correlation parameters between a previously measured beam and the first inter-frequency beam are within a threshold difference of one or more second values of the one or more spatial correlation parameters associated with the first serving beam and the second serving beam.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 17, 2021
From: HONG, YUE; WANG, YUANBO; SANKARAN, VISWANATH
To: QUALCOMM INCORPORATED
Reel/Frame 055293/0331 →
Continuity (2)
Provisional Application 62949963 · Dec 18, 2019
Related Publication 20210195436A1 · Jun 24, 2021