公开(公告)号：US20230064117A1

公开(公告)日：2023-03-02

申请号：US17982239

申请日：2022-11-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhimeng ZHONG ,  Huangping JIN ,  Haifan YIN ,  Xiaoyan BI ,  Li FAN

IPC: H04B7/0456 ,  H04L5/00 ,  H04L25/02

Abstract: Example channel measurement methods and communications apparatus are described. One example method includes receiving a precoded reference signal by a terminal device, where the precoded reference signal is obtained by precoding a reference signal based on K angle vectors and L delay vectors. First indication information is generated and sent, where the first indication information indicates P weighting coefficients corresponding to P angle-delay pairs. The P weighting coefficients are determined by using the precoded reference signal. The P angle-delay pairs and the P weighting coefficients corresponding to the P angle-delay pairs are used to determine a precoding matrix. Each angle-delay pair includes one of the K angle vectors and one of the L delay vectors. The K angle vectors and the L delay vectors are determined based on uplink channel measurement.

公开(公告)号：US20230155646A1

公开(公告)日：2023-05-18

申请号：US18155205

申请日：2023-01-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huangping JIN ,  Zhimeng ZHONG ,  Haifan YIN ,  Xiaoyan BI

IPC: H04B7/0456

CPC classification number: H04B7/0456 ,  H04B7/0413

Abstract: A channel measurement method and a communications apparatus. The method includes: a terminal device receives precoded reference signals from a network device, where the precoded reference signals are obtained by precoding reference signals based on K angle vectors; and generates and sends first indication information, where the first indication information is used to indicate P weighting coefficients corresponding to P angle-delay pairs, the P weighting coefficients are determined based on the precoded reference signals, each of the P angle-delay pairs includes one angle vector and one delay vector corresponding to the angle vector, a delay vector corresponding to each angle vector is preconfigured, each angle vector and the delay vector corresponding to each angle vector are obtained through uplink channel measurement, and the P angle-delay pairs and the P weighting coefficients corresponding to the P angle-delay pairs are used to determine a precoding matrix.

公开(公告)号：US20210314122A1

公开(公告)日：2021-10-07

申请号：US17352108

申请日：2021-06-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Huangping JIN ,  Hongzhe SHI ,  Zhimeng ZHONG ,  Haifan YIN ,  Xiaoyan BI

IPC: H04L5/00

Abstract: This application provides a method for configuring channel state information CSI reporting and a communication apparatus. The method includes: A terminal device receives configuration information for CSI reporting, where the configuration information for the CSI reporting is associated with configuration information of a first reference signal and configuration information of a second reference signal, the second reference signal is used for measuring an uplink channel, and the first reference signal is used for measuring a downlink channel. The terminal device performs channel measurement based on the first reference signal and the second reference signal to generate a CSI, and feeds back CSI. By using uplink and downlink channel reciprocity, the terminal device may not need to feed back information with reciprocity, for example, an angle and a delay, so that feedback overheads of the terminal device are reduced.

公开(公告)号：US20210320694A1

公开(公告)日：2021-10-14

申请号：US17347903

申请日：2021-06-15

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhimeng ZHONG ,  Huangping JIN ,  Haifan YIN ,  Xiaoyan BI ,  Li FAN

IPC: H04B7/0456 ,  H04L5/00 ,  H04L25/02

Abstract: Example channel measurement methods and communications apparatus are described. One example method includes receiving a precoded reference signal by a terminal device, where the precoded reference signal is obtained by precoding a reference signal based on K angle vectors and L delay vectors. First indication information is generated and sent, where the first indication information is used to indicate P weighting coefficients corresponding to P angle-delay pairs. The P weighting coefficients are determined by using the precoded reference signal. The P angle-delay pairs and the P weighting coefficients corresponding to the P angle-delay pairs are used to determine a precoding matrix. Each angle-delay pair includes one of the K angle vectors and one of the L delay vectors. The K angle vectors and the L delay vectors are determined based on uplink channel measurement.

公开(公告)号：US20210314035A1

公开(公告)日：2021-10-07

申请号：US17349364

申请日：2021-06-16

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huangping JIN ,  Zhimeng ZHONG ,  Haifan YIN ,  Xiaoyan BI

IPC: H04B7/0456

Abstract: A channel measurement method and a communications apparatus. The method includes: a terminal device receives precoded reference signals from a network device, where the precoded reference signals are obtained by precoding reference signals based on K angle vectors; and generates and sends first indication information, where the first indication information is used to indicate P weighting coefficients corresponding to P angle-delay pairs, the P weighting coefficients are determined based on the precoded reference signals, each of the P angle-delay pairs includes one angle vector and one delay vector corresponding to the angle vector, a delay vector corresponding to each angle vector is preconfigured, each angle vector and the delay vector corresponding to each angle vector are obtained through uplink channel measurement, and the P angle-delay pairs and the P weighting coefficients corresponding to the P angle-delay pairs are used to determine a precoding matrix.

公开(公告)号：US20210314034A1

公开(公告)日：2021-10-07

申请号：US17347850

申请日：2021-06-15

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Haifan YIN ,  Huangping JIN ,  Zhimeng ZHONG ,  Xiaoyan BI ,  Li FAN

IPC: H04B7/0456 ,  H04B7/0417

Abstract: One example method includes receiving one or more precoded reference signals, where the one or more precoded reference signals are obtained by precoding one or more reference signals based on K angle vectors. First indication information can then be generated, where the first indication information is used to indicate at least one delay vector and P weighting coefficients corresponding to P angle-delay pairs, the at least one delay vector and the P weighting coefficients are determined based on the one or more precoded reference signals, each of the P angle-delay pair includes one of the K angle vectors and one of the at least one delay vector, and the P angle-delay pairs and the P weighting coefficients are used to determine a precoding matrix, where P and K are positive integers, and where P≥1, K≥1. The first indication information can then be sent.

公开(公告)号：US20210194547A1

公开(公告)日：2021-06-24

申请号：US17176529

申请日：2021-02-16

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huangping JIN ,  Xiaohan WANG ,  Haifan YIN ,  Peng SHANG ,  Xiaoyan BI

IPC: H04B7/0456

Abstract: This application provides methods and apparatuses for precoding vector indication and determination. One method includes: generating, by a first communications device, first indication information that indicates one or more port selection vectors, one or more frequency domain vectors, and one or more linear combination coefficients, wherein each of the one or more linear combination coefficients corresponds to a port selection vector and a frequency domain vector, each of the one or more port selection vectors indicates a port of a precoded reference signal, and each of the one or more frequency domain vectors indicates a variation pattern of a channel in a frequency domain; and sending the first indication information to a second communications device.