公开(公告)号：US11528630B2

公开(公告)日：2022-12-13

申请号：US16909747

申请日：2020-06-23

Applicant: QUALCOMM Incorporated

Inventor： Jun Zhu ,  Ling Ding ,  Raghu Narayan Challa

IPC: H04W24/10 ,  H04B7/26 ,  G01S5/14 ,  H04L25/02 ,  H04B17/309 ,  H04L1/00

Abstract: Apparatus, methods, and computer-readable media for facilitating L1 UE-side filtering for mmW frequencies are disclosed herein. An example method for wireless communication at a user equipment includes configuring a filter coefficient for a serving beam. The example method also includes applying the filter coefficient to the serving beam to determine an updated filtered measurement result. The example method also includes reporting the updated filtered measurement result to a base station.

公开(公告)号：US11522595B1

公开(公告)日：2022-12-06

申请号：US17362366

申请日：2021-06-29

Applicant: QUALCOMM Incorporated

Inventor： Jun Zhu ,  Mihir Vijay Laghate ,  Yongle Wu ,  Raghu Narayan Challa ,  Alexei Yurievitch Gorokhov

IPC: H04B7/06 ,  H04L27/26 ,  H04L25/02 ,  H04W72/08 ,  H04W72/04

Abstract: The apparatus may be a UE. The UE may be configured to measure, over a time interval, a plurality of instances of a signal received from a serving device (e.g., a base station or serving UE). The UE may further be configured to adjust, based on at least two previously measured instances of the signal, a sampling rate associated with the signal received from the serving device. The UE may further be configured to maintain a particular number (e.g., 2-10) of previously measured instances of the signal, where adjusting the sampling rate is based on the maintained particular number of previously measured instances. The particular number of previously measured instances of the signal may be used to calculate a gradient of the measurements to identify a sampling rate associated with the calculated gradient.

公开(公告)号：US20220295372A1

公开(公告)日：2022-09-15

申请号：US17677448

申请日：2022-02-22

Applicant: QUALCOMM Incorporated

Inventor： Jun Zhu ,  Mihir Vijay Laghate ,  Yongle Wu ,  Raghu Narayan Challa

IPC: H04W36/32 ,  H04W36/00 ,  H04W16/28

Abstract: Methods, systems, and devices for wireless communications are described. Generally, to determine a mobility status of a user equipment (UE), the UE may perform filtering or post-processing on one or more beam metrics. The UE may generate first order statistics for the beam metrics, and may use the first order statistics to generate second order statistics. Based on whether the second order statistics for the beam metrics converge, based on whether a detected beam metric converges at zero or a non-zero value, or any combination thereof, the UE may determine a mobility status for the UE. The UE may select appropriate beam management parameter values based on the determined mobility status.

公开(公告)号：US10993236B2

公开(公告)日：2021-04-27

申请号：US16702316

申请日：2019-12-03

Applicant: QUALCOMM Incorporated

Inventor： Jun Zhu ,  Yong Li ,  Raghu Narayan Challa ,  Andrea Garavaglia ,  Yongle Wu ,  Ting Kong ,  Alexei Yurievitch Gorokhov

IPC: H04W72/04 ,  H04J11/00 ,  H04B17/327 ,  H04W56/00

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may use a measurement procedure for beam detection within an existing cell. The UE perform a search procedure for a first synchronization signal block (SSB) to detect a first beam of a base station. The UE may determine a first timing offset for the first SSB based on the search procedure. The UE may estimate a second timing offset for a second SSB from the base station based on the first timing offset. The UE may perform a measurement procedure for the second SSB to detect a second beam of the base station based on the second timing offset. The UE may prune fake beams based on synchronization signals used for the measurement procedure.

公开(公告)号：US10700753B2

公开(公告)日：2020-06-30

申请号：US16267303

申请日：2019-02-04

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Juergen Cezanne ,  Junyi Li ,  Sundar Subramanian ,  Tao Luo ,  Raghu Narayan Challa ,  Ruhua He ,  Yong Li ,  Jun Zhu ,  Tianyang Bai

IPC: H04L5/00 ,  H04B7/06 ,  H04B17/327 ,  H04W72/08 ,  H04W72/04 ,  H04W24/10

Abstract: Aspects of the disclosure relate to a method of operating a scheduled entity for wireless communication. In some aspects, the scheduled entity detects a fluctuation in a beam strength of at least one transmit beam from a scheduling entity. The scheduled entity transmits a first message to the scheduling entity, the first message indicating at least the fluctuation in the beam strength of the at least one transmit beam from the scheduling entity.

公开(公告)号：US12218719B2

公开(公告)日：2025-02-04

申请号：US18177728

申请日：2023-03-02

Applicant: QUALCOMM Incorporated

Inventor： Kang Gao ,  Jun Zhu ,  Raghu Narayan Challa

IPC: H04B7/0426 ,  H04B7/08

Abstract: A UE may identify a channel correlation matrix for a channel between the UE and a network node. The UE may identify whether the channel is associated with an LOS condition based on the channel correlation matrix. The UE may obtain a plurality of eigenvalues of the channel correlation matrix based on an eigen decomposition operation on the channel correlation matrix. The UE may identify whether the channel is associated with the LOS condition based on the plurality of eigenvalues of the channel correlation matrix. The UE may identify that the channel is associated with the LOS condition if a difference between a greatest eigenvalue in the plurality of eigenvalues and an average of other eigenvalues in the plurality of eigenvalues is greater than a threshold. Otherwise, the UE may identify that the channel is not associated with the LOS condition.

公开(公告)号：US12200609B2

公开(公告)日：2025-01-14

申请号：US17439366

申请日：2019-11-22

Applicant: QUALCOMM Incorporated

Inventor： Jun Zhu ,  Mihir Vijay Laghate ,  Raghu Narayan Challa

IPC: H04W48/16 ,  H04W24/10 ,  H04W56/00 ,  H04W72/04 ,  H04W72/044 ,  H04W36/30

Abstract: Aspects of the present disclosure provide a method for wireless communication at a user equipment (UE). The method includes selecting, for each of a plurality of periodic search opportunities, one receive beam of a plurality of receive beams for receiving at least one synchronization signal. The plurality of periodic search opportunities includes a plurality of regular search opportunities and a plurality of prioritized search opportunities. The plurality of receive beams includes at least one prioritized receive beam and at least one additional receive beam. The selecting includes selecting from the at least one prioritized receive beam for each of the plurality of prioritized search opportunities; and selecting from the plurality of receive beams for each of the plurality of regular search opportunities. The method further includes receiving, at each of the plurality of periodic search opportunities, the corresponding at least one synchronization signal using the corresponding selected receive beam.

公开(公告)号：US11825459B2

公开(公告)日：2023-11-21

申请号：US17242134

申请日：2021-04-27

Applicant: QUALCOMM Incorporated

Inventor： Jun Zhu ,  Yong Li ,  Raghu Narayan Challa

IPC: H04W76/28 ,  H04W72/044 ,  H04W56/00 ,  H04J11/00

CPC classification number: H04W72/046 ,  H04W56/001 ,  H04W76/28 ,  H04J11/0073 ,  H04J11/0076 ,  H04J2211/005

Abstract: A method of wireless communication includes receiving, by a UE, one or more configuration messages indicating synchronization signals (SS) and physical broadcast channel (PBCH) block measurement timing configuration (SMTC) parameters. The SMTC parameters indicate SMTC windows associated with reception of synchronization signal blocks (SSBs) by the UE from a base station. The method further includes, based on detecting one or more trigger conditions, transitioning, by the UE, from an inactive state to an active state to receive, during a time interval distinct from the SMTC windows, one or more SSBs from the base station. The method further includes performing, by the UE, one or more beam management operations based on the one or more SSBs received during the time interval.

公开(公告)号：US20230370143A1

公开(公告)日：2023-11-16

申请号：US17744541

申请日：2022-05-13

Applicant: QUALCOMM Incorporated

Inventor： Upamanyu Jamwal ,  Jun Zhu ,  Kang Gao ,  Arnab Pal ,  Nagaraju Gajula ,  Sumanth Kumar Kota

IPC: H04B7/06 ,  H04W24/08 ,  H04W24/10

CPC classification number: H04B7/0695 ,  H04W24/08 ,  H04W24/10

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may measure a reference signal over a first subset of a set of measurement occasions using a serving UE receive beam according to a serving beam measurement periodicity. The UE may measure the reference signal over a second subset of the set of measurement occasions using a first subset of candidate UE receive beams of a set of candidate UE receive beams. The UE may measure the reference signal over a third subset of the set of measurement occasions using a second subset of candidate UE receive beams of the set of candidate UE receive beams. The UE may perform beam switching to a candidate UE receive beam of the set of candidate UE receive beams based at least in part on a result of measuring the reference signal.

公开(公告)号：US11800391B2

公开(公告)日：2023-10-24

申请号：US17240339

申请日：2021-04-26

Applicant: QUALCOMM incorporated

Inventor： Jun Zhu ,  Yong Li ,  Ruhua He ,  Raghu Narayan Challa

IPC: H04W24/10 ,  H04W56/00 ,  H04B7/06 ,  H04W72/12 ,  H04W88/02

CPC classification number: H04W24/10 ,  H04B7/0617 ,  H04W56/00 ,  H04W56/001 ,  H04W72/12 ,  H04W88/02

Abstract: Methods, systems, and devices for wireless communications are described. A wireless device such as a user equipment (UE) may determine a set of scheduled synchronization signal transmission times. A first subset of the set of scheduled synchronization signal transmission times may be allocated for dynamic measurement. The wireless device may select at least one candidate beam from a set of candidate beams for a dynamic measurement during one of the transmission times in the first subset. The at least one candidate beam may be selected based at least in part on a fairness metric, a signal strength metric, a timing metric, or a combination thereof. The wireless device may perform a measure procedure on the selected at least one candidate beam and may transmit a measurement report based at least in part on the measure procedure to another wireless device (e.g., a base station).