公开(公告)号：US20200153493A1

公开(公告)日：2020-05-14

申请号：US16742366

申请日：2020-01-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhimeng ZHONG ,  Di FENG ,  Xiaomei ZHANG ,  Jingfeng QU

IPC: H04B7/06 ,  H04B7/0456 ,  H04L25/02 ,  H04B7/08

Abstract: The present disclosure relates to beamforming methods and devices. In one example method, an access network device calculates an uplink channel frequency response, calculates a model parameter in a channel frequency response mathematical model based on the uplink channel frequency response and each uplink subcarrier frequency, where the model parameter has reciprocity on uplink and downlink subcarrier frequencies, constructs a downlink channel frequency response based on the model parameter, the channel frequency response mathematical model, and each downlink subcarrier frequency, calculates a beamforming weight for each downlink subcarrier frequency based on the downlink channel frequency response, and performs downlink beamforming on an antenna array based on the beamforming weight for each downlink subcarrier frequency, where the antenna array is a dual-polarized antenna array or a single-polarized antenna array.

公开(公告)号：US20250150144A1

公开(公告)日：2025-05-08

申请号：US19013788

申请日：2025-01-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jie WANG ,  Li FAN ,  Shibin GE ,  Hui WANG ,  Zhimeng ZHONG ,  Xiaoyan BI

IPC: H04B7/06 ,  H04B7/0417

Abstract: This application provides a channel state information (CSI) feedback method including: a communication apparatus receives first indication information, wherein the first indication information is determined based on a received precoded reference signal corresponds to P reference signal ports; the first indication information indicates B complex coefficients determined from K complex coefficients according to a preset priority value, the K complex coefficients are determined from a complex coefficient set comprising U complex coefficients that are determined for an sth reference signal port in S reference signal ports at each transport layer of Z transport layers, the S reference signal ports are a part or all of the P reference signal ports, the U complex coefficients are a part or all of Ts complex coefficients corresponding to the sth reference signal port; and determines a precoding matrix based on the first indication information.

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：US20220224568A1

公开(公告)日：2022-07-14

申请号：US17707323

申请日：2022-03-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huangping JIN ,  Shibin GE ,  Zhimeng ZHONG ,  Yong LIU ,  Xiaoyan BI ,  Li FAN

IPC: H04L25/02 ,  H04W56/00

Abstract: Example channel measurement methods and a communication apparatus are described. One example method include receiving a precoded reference signal and indication information by a terminal device, where the indication information is used to indicate a relative delay between a first delay and a second delay, and the first delay and the second delay are determined through uplink channel measurement. The terminal device performs channel measurement based on the precoded reference signal and the indication information.

公开(公告)号：US20250132790A1

公开(公告)日：2025-04-24

申请号：US19002155

申请日：2024-12-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Li FAN ,  Qibo QIN ,  Shujing CHEN ,  Zhimeng ZHONG ,  Huangping JIN

IPC: H04B7/0417 ,  H04B7/06

Abstract: Embodiments of this application provide a channel state information (CSI) reporting method and a communications apparatus. In the method, a receiving device obtains first CSI and second CSI, and determines reference information based on the first CSI and the second CSI. The first CSI is correlated with the second CSI, the reference information includes first quantization information including projection quantization information of a common subspace and second quantization information including projection quantization information of a first non-common subspace, the common subspace includes an intersection of a first space used to quantize the first CSI and a second space used to quantize the second CSI, and the first non-common subspace includes a subspace other than the common subspace in the first space. The receiving device sends the reference information to a sending device, and the sending device determines the first CSI based on the reference information and the second CSI.

公开(公告)号：US20230013510A1

公开(公告)日：2023-01-19

申请号：US17941430

申请日：2022-09-09

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shibin GE ,  Zhimeng ZHONG ,  Xiaohan WANG ,  Huangping JIN ,  Li FAN ,  Xiaoyan BI ,  Yiling YUAN

IPC: H04W72/04

Abstract: A method for indicating channel state information CSI measurement and a communication apparatus. A network device indicates, to a terminal device by using first indication information, one or more frequency domain units in a downlink reference signal resource that are used by the terminal device to obtain CSI. The terminal device determines, based on the first indication information, which frequency domain units in the downlink reference signal resource are used to obtain the CSI, and perform measurement in the frequency domain unit to obtain the CSI. The network device flexibly configures CSI measurement based on a system status, to control obtaining of the CSI. This helps the terminal device obtain the CSI more pertinently based on the indication in different cases.

公开(公告)号：US20200083971A1

公开(公告)日：2020-03-12

申请号：US16681731

申请日：2019-11-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhimeng ZHONG ,  Jianyao ZHAO ,  Di FENG

IPC: H04B17/318 ,  H04B7/06

Abstract: Embodiments of this application disclose a method and an apparatus for determining a broadcast beam weighted value. The method includes: obtaining an angle path loss spectrum of a target cell at a current moment, where the angle path loss spectrum includes signal path loss values of a target base station in the target cell in a plurality of directions; determining a beam angle power spectrum based on the angle path loss spectrum, where the beam angle power spectrum includes signal transmit powers of the target base station in the plurality of directions, and in the beam angle power spectrum, a signal transmit power in a direction with a relatively large signal path loss value in the angle path loss spectrum is relatively large; determining a broadcast beam weighted value based on the beam angle power spectrum; and forming a target broadcast beam based on the broadcast beam weighted value.

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.