公开(公告)号：US20230291613A1

公开(公告)日：2023-09-14

申请号：US18321223

申请日：2023-05-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xinyu GAO ,  Xiang GAO ,  Kunpeng LIU

IPC: H04L25/02 ,  H04L5/00

CPC classification number: H04L25/0242 ,  H04L5/0051

Abstract: Example communication methods and apparatus are described. One example method includes receiving a reference signal from a network device by a terminal device. The reference signal has an association relationship with a weight matrix and a channel between the network device and the terminal device, a quantity of rows or columns of the weight matrix is N, and N is a positive integer less than or equal to a quantity of receive ports of the terminal device. The terminal device determines an estimation result of the weight matrix based on the reference signal, where the estimation result of the weight matrix is used by the terminal device to perform signal detection on a data signal received by the terminal device from the network device, or is used by the terminal device to precode a data signal sent by the terminal device to the network device.

公开(公告)号：US20220394723A1

公开(公告)日：2022-12-08

申请号：US17881851

申请日：2022-08-05

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xinyu GAO ,  Kunpeng LIU

IPC: H04W72/08 ,  H04W72/04 ,  H04B7/06

Abstract: A signal sending method and a related apparatus are disclosed. In the signal sending method, an access network device obtains a channel information sample, determines M′ frequency domain units in M frequency domain units in an (x+T)th time unit based on the channel information sample, and sends one or more measurement pilots to a terminal in the M′ frequency domain units. The one or more measurement pilots are used to measure CSI, and the channel information sample includes channel information in an xth time unit to an (x+T−1)th time unit, where M′

公开(公告)号：US20230231742A1

公开(公告)日：2023-07-20

申请号：US18192032

申请日：2023-03-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xinyu GAO ,  Kunpeng LIU

IPC: H04L25/02 ,  H04W72/1268 ,  H04L5/00

CPC classification number: H04L25/0202 ,  H04W72/1268 ,  H04L5/0048

Abstract: This application provides a communication method and apparatus, so that a terminal device sends uplink pilot signals, the terminal device obtains a first delay information set based on downlink pilot signals from a network device, and the network device jointly considers the first delay information set and the uplink pilot signals to perform uplink channel estimation. The first delay information set may indicate a delay position of a strong path, and uplink channel estimation accuracy can be improved.

公开(公告)号：US20220271805A1

公开(公告)日：2022-08-25

申请号：US17741143

申请日：2022-05-10

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xinyu GAO ,  Kunpeng LIU

IPC: H04B7/0456 ,  H04L5/00

Abstract: This application provides a channel information obtaining method and a communications apparatus, to reduce pilot overheads and a delay of obtaining channel information. The method includes: A terminal device receives one or more first reference signals on a dth port of the terminal device, where the first reference signal is a reference signal from a first network device. The terminal device obtains a first channel vector h1,d based on the received first reference signal, where h1,d is a channel vector of a channel between the dth port of the terminal device and the first network device. The terminal device receives N second reference signals on the dth port of the terminal device. The terminal device obtains a second channel vector h2,d based on the received second reference signal.