公开(公告)号：US11647494B2

公开(公告)日：2023-05-09

申请号：US17195367

申请日：2021-03-08

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/04 ,  H04W72/044 ,  H04W72/02

CPC classification number: H04W72/046 ,  H04W72/02 ,  H04W72/042

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may communicate with a base station using a first beam set of a group of beam sets, where each beam set includes a beam from a first set of beams with a first polarization and a beam from a second set of beams with a second polarization. The UE may receive a set of reference signals corresponding to a set of transmit beams of the base station, where the UE receives at least one reference signal for each beam of the first and second sets of beams. The UE may select a second beam set from the group of beam sets based on one or more parameters associated with the second beam set and based on receiving the set of reference signals, and may communicate with the base station using the selected beam set.

公开(公告)号：US11641642B2

公开(公告)日：2023-05-02

申请号：US17149556

申请日：2021-01-14

Applicant: QUALCOMM Incorporated

Inventor： Michael Levitsky ,  Raghu Narayan Challa ,  Ruhua He ,  Assaf Touboul

IPC: H04W72/04 ,  H04W72/044 ,  H04L5/00 ,  H04W24/10

Abstract: In embodiments, a base station may send to a user equipment (UE) a P3 beam management (BM) channel state information reference signal (CSI-RS) having two ports, and may receive from the UE a P3 BM report in response. The P3 BM report may include a proactive UE beam switch indication and a CSF report corresponding to the best UE beam determined by a UE based on the P3 BM CSI-RS. The base station may determine whether the P3 BM report includes an indication that the UE will perform a beam switch from a first UE beam to a second UE beam, and may determine a UE beam switch slot during which the UE will perform the beam switch. Starting at the beam switch slot, the base station may send a physical downlink shared data channel (PDSCH) transmission to the UE using the adjusted downlink transmission parameters.

公开(公告)号：US11638218B2

公开(公告)日：2023-04-25

申请号：US16893004

申请日：2020-06-04

Applicant: QUALCOMM Incorporated

Inventor： Ruhua He ,  Shrenik Patel ,  Sang-June Park ,  Mihir Vijay Laghate ,  Raghu Narayan Challa

IPC: H04W52/14 ,  H04W52/42 ,  H04W52/24 ,  H04W72/044 ,  H04L1/00 ,  H04L5/00 ,  H04W52/52 ,  H04B17/318

Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be configured to determine a PSD based on a transmission power associated with transmission of an uplink signal. The apparatus may be configured to select one of a first beam or a second beam for the transmission of the uplink signal based on the PSD. The second beam may be wider than the first beam, and may be generated by a single antenna element of the apparatus. The apparatus may be configured to transmit the uplink signal using the selected one of the first beam or the second beam.

公开(公告)号：US20230080068A1

公开(公告)日：2023-03-16

申请号：US17826865

申请日：2022-05-27

Applicant: QUALCOMM Incorporated

Inventor： Arash Ebadi Shahrivar ,  Peter Pui Lok Ang ,  Brian Clarke Banister ,  Yung-Yih Jian ,  Jianming Zhu ,  Raghu Narayan Challa ,  Alexei Yurievitch Gorokhov ,  Aamod Khandekar ,  Ruhua He

IPC: H04B7/06 ,  H04B7/08

Abstract: Methods, systems, and devices for wireless communications are described that provide for antenna selection at a user equipment (UE). The UE may have a set of available antennas for uplink and downlink communications, and may select a first subset of antennas for uplink communications and a second subset of antennas for downlink communications. The first subset of antennas may be based on one or more uplink metrics, and the second subset of antennas may be based on the first subset of antennas and one or more downlink channel metrics, traffic amounts, or any combinations thereof.

公开(公告)号：US20230071270A1

公开(公告)日：2023-03-09

申请号：US17447009

申请日：2021-09-07

Applicant: QUALCOMM Incorporated

Inventor： Jun ZHU ,  Yong Li ,  Raghu Narayan Challa

IPC: H04W72/12 ,  H04L5/00 ,  H04W72/04 ,  H04W72/02

Abstract: Certain aspects of the present disclosure provide a technique for wireless communications by a user equipment (UE). The UE implements the technique to select a number of component carriers (CCs) in both a first frequency range and a second frequency range. The UE determines a schedule for performing search and measurement in the selected number of CCs. The UE performs search and measurement in the selected CCs according to the determined schedule.

公开(公告)号：US20230028143A1

公开(公告)日：2023-01-26

申请号：US17380971

申请日：2021-07-20

Applicant: QUALCOMM Incorporated

Inventor： Vasanthan Raghavan ,  Tao Luo ,  Raghu Narayan Challa

IPC: H04W8/24 ,  H04W48/14 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit, to a base station, control signaling indicating a capability of the UE to apply an amplitude control procedure to one or more antenna elements for beamforming and indicating that the UE is applying the amplitude control procedure. The UE may receive a control message scheduling transmission of an uplink message. The UE may generate a signal including the uplink message using the amplitude control procedure, which may adjust one or more amplitudes of the signal. The UE may transmit the signal via the one or more antenna elements. In some cases, UE may indicate an amount of power loss in the signal based on the amplitude control procedure, and the base station may transmit downlink transmissions using a lower order modulation and coding scheme or an applied power boost to compensate for the power loss.

公开(公告)号：US11516824B2

公开(公告)日：2022-11-29

申请号：US16289603

申请日：2019-02-28

Applicant: QUALCOMM Incorporated

Inventor： Ting Kong ,  Chun-Hao Hsu ,  Yongle Wu ,  Yong Li ,  Jun Zhu ,  Raghu Narayan Challa

IPC: H04W72/12 ,  H04B7/08 ,  H04W72/04 ,  H04W56/00 ,  H04W28/02 ,  H04B7/0408

Abstract: Dynamic User Equipment (UE) beam switching for millimeter wave (mmWave) measurements in asynchronous networks is discussed in which a UE configured with a plurality of UE beams receives timing information of detected cells in an asynchronous network, and calculates, based on the timing information, a maximum offset for the detected cells indicating a timing difference between a pair of cells of the detected cells that is larger than a timing difference between any other pair of the detected cells. A UE beam switch from a UE beam to another UE beam of the plurality of beams is scheduled based on the maximum offset, which includes using the maximum offset to determine how often the UE beam switch can be performed. Other aspects and features are also claimed and described.

公开(公告)号：US20220369222A1

公开(公告)日：2022-11-17

申请号：US17322658

申请日：2021-05-17

Applicant: QUALCOMM Incorporated

Inventor： Yongle Wu ,  Raghu Narayan Challa ,  Mihir Vijay Laghate ,  Yong Li ,  Farhad Meshkati

IPC: H04W48/20 ,  H04W24/10 ,  H04W72/04 ,  H04W72/08 ,  H04B7/0404 ,  H04B17/318 ,  H04B7/0408 ,  H04B7/06

Abstract: Methods, systems, and devices for wireless communication at a user equipment (UE) are described. A UE may establish a wireless connection with a primary cell and may identify a set of antenna modules of the UE and multiple sets of receive beams. Each set of receive beams may include at least one beam from each antenna module. The UE may perform a measurement procedure on signals received from one or more candidate secondary cells using at least a first set of receive beams. The UE may then transmit, to the primary cell, a measurement report based on performing the measurement procedure upon determining that at least one of the multiple sets of receive beams satisfies a threshold value and before performing the measurement procedure on signals received from the one or more candidate secondary cells using at least one remaining set of receive beams.

公开(公告)号：US11464014B2

公开(公告)日：2022-10-04

申请号：US17178864

申请日：2021-02-18

Applicant: QUALCOMM Incorporated

Inventor： Yongle Wu ,  Mihir Vijay Laghate ,  Farhad Meshkati ,  Raghu Narayan Challa ,  Jyothi Kiran Vattikonda

IPC: H04W88/06 ,  H04W72/04 ,  H04W48/20 ,  H04B17/382

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may measure a beam, according to a measurement configuration, to determine a channel condition value of the beam, modify the channel condition value based at least in part on at least one of one or more beam characterizations, a derivation of a beamforming gain value, or an estimation of the beamforming gain value, and transmit, to a base station, a measurement report indicating the modified channel condition value. Numerous other aspects are provided.

公开(公告)号：US11184863B2

公开(公告)日：2021-11-23

申请号：US16595309

申请日：2019-10-07

Applicant: QUALCOMM Incorporated

Inventor： Mihir Vijay Laghate ,  Raghu Narayan Challa ,  Junsheng Han ,  Ruhua He ,  Hongbo Yan

IPC: H04W52/36 ,  H04W72/04 ,  H04L5/00 ,  H04W52/24 ,  H04W16/28

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine, for a candidate UE uplink beam, a transmit power due to a maximum permissible exposure (MPE) constraint; estimate, for the candidate UE uplink beam, a receive power for a base station based at least in part on the transmit power due to the MPE constraint; determine a target receive power for the base station; and select the candidate UE uplink beam as an active UE uplink beam based at least in part on the estimated receive power for the base station and the target receive power for the base station. Numerous other aspects are provided.