公开(公告)号：US20190208619A1

公开(公告)日：2019-07-04

申请号：US16214745

申请日：2018-12-10

Applicant: QUALCOMM Incorporated

Inventor： Yu ZHANG ,  Douglas Bruce WHITE

IPC: H05K1/02 ,  H05K9/00 ,  H05K1/05 ,  H05K1/09 ,  H05K3/46 ,  H05K3/40 ,  H05K1/11

Abstract: Disclosed is a printed circuit board (PCB) including a set of stacked metallization layers separated by a set of stacked electrical-insulating layers, respectively, wherein the set of stacked metallization layers includes top metallization layer, bottom metallization layer, and intermediate metallization layer; a via electrically coupled to the top metallization layer, the intermediate metallization layer, and the bottom metallization layer, wherein the top metallization layer, a portion of the via between the top metallization layer and the intermediate metallization layer, and the intermediate metallization layer are configured to route a data signal between a signal-in and a signal-out; and an electromagnetic absorbing material configured to reduce an intensity of a reflected signal resulting from the data signal propagating downward along a stub of the via and reflecting off the bottom metallization layer. The electromagnetic absorbing material may be attached to a bottom of the PCB and/or coaxially attached to the stub.

公开(公告)号：US20190199413A1

公开(公告)日：2019-06-27

申请号：US16324653

申请日：2017-08-11

Applicant: Jay Kumar SUNDARARAJAN ,  Naga BHUSHAN ,  Haitong SUN ,  Tingfang JI ,  Yu ZHANG ,  QUALCOMM Incorporated

Inventor： Jay Kumar SUNDARARAJAN ,  Naga BHUSHAN ,  Haitong SUN ,  Tingfang JI ,  Yu ZHANG ,  Wanshi CHEN

IPC: H04B7/0417 ,  H04W72/14 ,  H04B7/06

CPC classification number: H04B7/0417 ,  H04B7/0404 ,  H04B7/0452 ,  H04B7/0617 ,  H04B7/063 ,  H04B7/0634 ,  H04B7/0695 ,  H04W72/14

Abstract: Aspects of the present disclosure provide methods and apparatus for selecting beamforming parameters for uplink transmissions based on an uplink reference signal. An example method generally includes identifying one or more parameters for beamformed transmission to a transmit receive point (TRP), transmitting a reference signal using beamforming in accordance with the identified parameters, and receiving, from the TRP in response to the reference signal, signaling for adjusting the one or more parameters for one or more subsequent beamformed transmissions.

公开(公告)号：US20180083676A1

公开(公告)日：2018-03-22

申请号：US15563357

申请日：2015-06-03

Applicant: Chao WEI ,  Yu ZHANG ,  Wanshi CHEN ,  Peter GAAL ,  QUALCOMM Incorporated

Inventor： Chao Wei ,  Yu ZHANG ,  Wanshi CHEN ,  Peter GAAL

IPC: H04B7/04 ,  H04B7/0452

CPC classification number: H04B7/0478 ,  H04B7/0452 ,  H04B7/0626 ,  H04B7/0632 ,  H04L1/0026 ,  H04L1/0031

Abstract: Enhanced channel state information (CSI) procedures for full dimension-multiple input, multiple output (FD-MIMO) is discussed in which a number of CSI reference signal (CSI-RS) ports configured for a user equipment (UE) is determined. In response to the CSI-RS ports including both horizontal and vertical ports, the UE may determine a first precoding matrix from a plurality of precoding matrices constructed by a Kronecker product of a horizontal precoding matrix and a vertical precoding matrix. The UE selects a predetermined number of precoding vectors out of the first precoding matrix and generates a wideband precoding matrix, based on the selected predetermined number of precoding vectors. The UE reports one or more CSI reports, wherein the CSI reports includes at least one precoding matrix indicator (PMI) for the first precoding matrix and at least an indication of the selection of the predetermined number of precoding vectors.

公开(公告)号：US20160065282A1

公开(公告)日：2016-03-03

申请号：US14786854

申请日：2014-05-28

Applicant: Yu ZHANG ,  Wei CHAO ,  Peng CHENG ,  Neng WANG ,  Jilei HOU ,  QUALCOMM INCORPORATED

Inventor： Yu ZHANG ,  Wei CHAO ,  Peng CHENG ,  Neng WANG ,  Jilei HOU

IPC: H04B7/04 ,  H04W16/10 ,  H04L1/00

Abstract: Certain aspects of the present disclosure provide methods and apparatus for linear precoding in full-dimensional MIMO (FD-MIMO) systems. According to aspects, an eNB may compress a larger number of antenna elements to a smaller number of antenna ports. The eNB may use a port precoding matrix to transmit reference signals to a UE, receive feedback regarding CSI based on the reference signals, and transmit data to the UE, based on a mapping of multiple data layers and mapping of antenna ports to the physical antenna elements. Further, aspects include performing elevation beamforming by dynamically forming one or more vertical sectors based on UE feedback in the elevation domain.

Abstract translation: 本公开的某些方面提供了在全维MIMO（FD-MIMO）系统中用于线性预编码的方法和装置。 根据方面，eNB可以将较大数量的天线元件压缩到较少数量的天线端口。 eNB可以使用端口预编码矩阵来向UE发送参考信号，基于参考信号接收关于CSI的反馈，并且基于多个数据层的映射以及将天线端口映射到物理天线来向UE发送数据 元素。 此外，方面包括通过基于仰角域中的UE反馈动态地形成一个或多个垂直扇区来执行提升波束成形。

公开(公告)号：US20250167851A1

公开(公告)日：2025-05-22

申请号：US18841518

申请日：2023-03-29

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Sayed Khairy ABDELGHAFFAR ,  Yu ZHANG ,  Alexandros MANOLAKOS

IPC: H04B7/06 ,  H04L5/00

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may obtain a channel state information (CSI) report that is associated with a multi-symbol downlink reference signal and that indicates a report quantity associated with a Doppler shift measurement, a per-path Doppler measurement, or a per-beam-per-path Doppler measurement. The UE may count a number of CSI processing units (CPU's) for processing the CSI report based at least in part on the report quantity. Numerous other aspects are described.

公开(公告)号：US20250141571A1

公开(公告)日：2025-05-01

申请号：US18836326

申请日：2023-03-24

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Sayed Khairy ABDELGHAFFAR ,  Yu ZHANG ,  Alexandros MANOLAKOS ,  Peter GAAL ,  June NAMGOONG ,  Wanshi CHEN ,  Krishna Kiran MUKKAVILLI

IPC: H04B17/309 ,  H04B7/01 ,  H04B7/06 ,  H04L5/00

Abstract: Method and apparatus for reporting of time domain channel characteristics. The apparatus receives a Doppler configuration to measure Doppler information for at least one channel path of a plurality of channel paths. The apparatus receives a tracking reference signal (TRS) to obtain the Doppler information for the at least one channel path of the plurality of channel paths based on the Doppler configuration. The apparatus transmits a Doppler report comprising the Doppler information for the at least one channel path of the plurality of channel paths based on the received TRS. The apparatus receives a downlink transmission on a predicted channel and precoder, the predicted channel and the precoder based at least on the Doppler report.

公开(公告)号：US20250139517A1

公开(公告)日：2025-05-01

申请号：US18835792

申请日：2022-04-11

Applicant: QUALCOMM Incorporated

Inventor： Yuwei REN ,  Chenxi HAO ,  Taesang YOO ,  Hao XU ,  Yu ZHANG ,  Rui HU ,  Ruiming ZHENG ,  Liangming WU ,  Yin HUANG

IPC: G06N20/00

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive information to update a machine learning model associated with a training iteration of the machine learning model. The UE may transmit a local loss value based at least in part on the training iteration of the machine learning model within a time window to report the local loss value for the training iteration, the time window having an ending. Numerous other aspects are described.

公开(公告)号：US20250119182A1

公开(公告)日：2025-04-10

申请号：US18865810

申请日：2022-08-02

Applicant: QUALCOMM Incorporated

Inventor： Ahmed ELSHAFIE ,  Yu ZHANG ,  Hung Dinh LY ,  Huilin XU ,  Zhikun WU ,  Saeid SAHRAEI ,  Peter GAAL

IPC: H04B7/04 ,  H04W16/28

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first network node may receive, from a second network node associated with a reconfigurable intelligent surface (RIS), positioning information associated with the RIS. The first network node may communicate, with a third network node, using a beam of a set of beams that is configured based at least in part on the positioning information. Numerous other aspects are described.

公开(公告)号：US20250105897A1

公开(公告)日：2025-03-27

申请号：US18728996

申请日：2022-03-31

Applicant: QUALCOMM Incorporated

Inventor： Ahmed ELSHAFIE ,  Kianoush HOSSEINI ,  Yu ZHANG ,  Wanshi CHEN ,  Peter GAAL

IPC: H04B7/06 ,  H04B7/0456 ,  H04W72/25

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first network node may transmit a first sidelink reference signal (SL-RS) to a second network node. The first network node may receive, from the second network node, a second SL-RS and channel state information (CSI) that is associated with the first (SL-RS). The first network node may determine a (CSI)-related parameter based on the second (SL-RS) and the (CSI). The first network node may transmit, to the second network node, the (CSI)-related parameter or a communication based on the (CSI)-related parameter. Numerous other aspects are described.

公开(公告)号：US20250088232A1

公开(公告)日：2025-03-13

申请号：US18728394

申请日：2022-04-02

Applicant: QUALCOMM Incorporated

Inventor： Chenxi HAO ,  Yu ZHANG ,  Rui HU ,  Wei XI ,  Taesang YOO ,  Hao XU

IPC: H04B7/06

Abstract: Certain aspects of the present disclosure provide techniques for channel estimation based on transmission spatial information. An example method of wireless communication by a user equipment includes receiving an indication of transmission spatial information associated with a network entity; receiving a reference signal from the network entity based on the transmission spatial information; and transmitting, to the network entity, channel state information (CSI) based on the received reference signal and the transmission spatial information.