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：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.

公开(公告)号：US20250088230A1

公开(公告)日：2025-03-13

申请号：US18957572

申请日：2024-11-22

Applicant: QUALCOMM Incorporated

Inventor： Chenxi HAO ,  Yu ZHANG ,  Liangming WU ,  Hao XU ,  Wanshi CHEN ,  Peter GAAL

IPC: H04B7/0456 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described. In one aspect, the described techniques provide for identifying interference signals on multiple layers or resources and determining whether the interference signals transmitted on a particular layer or resource were precoded using linear precoding (LP) or NLP. In this aspect, a receiving device may equalize signals received from a transmitting device (e.g., filter out interference signals) based on determining whether the interference signals were precoded using a first type of precoding (e.g., linear precoding (LP)) or a second type of precoding (e.g., NLP). In another aspect, the described techniques provide for performing interference measurements on signals precoded using NLP based on categorizing interference resources as being precoded using LP or NLP. In this aspect, a receiving device may perform and report measurements differently for interference signals precoded using LP and interference signals precoded using NLP.

公开(公告)号：US20240414658A1

公开(公告)日：2024-12-12

申请号：US18810598

申请日：2024-08-21

Applicant: QUALCOMM Incorporated

Inventor： Min HUANG ,  Chao WEI ,  Yuwei REN ,  Yu ZHANG ,  Qiaoyu LI ,  Chenxi HAO ,  Liangming WU ,  Hao XU

IPC: H04W52/14 ,  H04W52/08 ,  H04W52/10 ,  H04W52/24

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may receive an indication of a first transmit power configuration and a second transmit power configuration for a physical uplink shared channel (PUSCH) communication. The wireless communication device may transmit, using a first transmit power that is based at least in part on the first transmit power configuration, a first portion of the PUSCH communication in a full-duplex portion of a time-frequency resource. The wireless communication device may transmit, using a second transmit power that is based at least in part on the second transmit power configuration, a second portion of the PUSCH communication in a non-full-duplex portion of the time-frequency resource. Numerous other aspects are provided.

公开(公告)号：US20240413855A1

公开(公告)日：2024-12-12

申请号：US18701530

申请日：2021-12-10

Applicant: QUALCOMM Incorporated

Inventor： Ahmed ELSHAFIE ,  Hung Dinh LY ,  Yu ZHANG ,  Saeid SAHRAEI ,  Krishna Kiran MUKKAVILLI

IPC: H04B7/04 ,  H04B17/318 ,  H04B17/336 ,  H04L5/00

Abstract: Certain aspects of the present disclosure provide techniques for wireless communication by a network entity. For example, the network entity defines a size of reconfigurable intelligent surface (RIS) elements. The network entity further defines a set of patterns representing active RIS elements and/or inactive RIS elements, based on the size of RIS elements. The network entity transmits an indication of the size of RIS elements and the set of patterns to a RIS controller.

公开(公告)号：US20240406958A1

公开(公告)日：2024-12-05

申请号：US18327526

申请日：2023-06-01

Applicant: QUALCOMM Incorporated

Inventor： Ahmed ELSHAFIE ,  Yan ZHOU ,  Yu ZHANG ,  Hung Dinh LY

IPC: H04W72/20 ,  H04W28/26

Abstract: Methods, systems, and devices for wireless communications are described. Techniques described herein may enable transmission power control (TPC) for user equipments (UEs) supporting reconfigurable intelligent surfaces (RISs). For example, a first UE may receive a control message indicating multiple parameter sets associated with calculating a transmission power for a transmission. Each parameter set may be associated with a communication link, a presence of one or more RISs, and whether the one or more RISs are assisting the first UE or a second UE. The UE may transmit signaling in accordance with a calculated transmission power based on selecting a first parameter set from the multiple parameter sets, where the first parameter set is selected based on a communication link associated with the transmission, a presence of one or more RISs during the transmission, and whether the one or more RISs are assisting the first UE or the second UE.

公开(公告)号：US20240380465A1

公开(公告)日：2024-11-14

申请号：US18692763

申请日：2021-11-04

Applicant: QUALCOMM Incorporated

Inventor： Hyojin LEE ,  Chenxi HAO ,  June NAMGOONG ,  Taesang YOO ,  Wei XI ,  Pavan Kumar VITTHALADEVUNI ,  Yu ZHANG ,  Hwan Joon KWON

IPC: H04B7/06 ,  H04B7/0456 ,  H04B17/309

Abstract: A method of wireless communication by a user equipment (UE), includes estimating a downlink channel to generate a channel estimate. The method also includes obtaining multiple precoding matrices, by a channel state information (CSI) module including a neural network encoder decoder pair, based on the channel estimate and multiple different multiple input multiple output (MIMO) ranks. The method further includes determining a best rank indicator based on the precoding matrices and spectral efficiency estimates for the different MIMO ranks. The method still further includes reporting, to a base station, the best rank indicator, a channel quality index (CQI), and CSI encoder output.

公开(公告)号：US20240380453A1

公开(公告)日：2024-11-14

申请号：US18683503

申请日：2021-10-14

Applicant: QUALCOMM Incorporated

Inventor： Ruiming ZHENG ,  Muhammad Sayed Khairy ABDELGHAFFAR ,  Yu ZHANG ,  Alexandros MANOLAKOS ,  Runxin WANG

IPC: H04B7/06 ,  H04L1/1607 ,  H04W76/38

Abstract: A user equipment (UE) may identify at least one suitable configuration for sounding reference signal (SRS) antenna switching and transmit the at least one suitable configuration for SRS antenna switching to the base station via a medium access control (MAC) control element (CE) (MAC-CE) or a radio resource control (RRC) message. The base station may receive the at least one suitable configuration for SRS antenna switching from the UE, and transmit an active SRS antenna switching configuration to the UE, the active SRS antenna switching configuration based on the suitable configuration for SRS antenna switching received from the UE.