公开(公告)号：US11284425B2

公开(公告)日：2022-03-22

申请号：US16881495

申请日：2020-05-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Quanzhong Gao ,  Yong Wang ,  Heng Xu ,  Liwen Zhang ,  Guochen Liu

IPC: H04W72/12 ,  H04L5/10 ,  H04W88/08 ,  H04W92/12

Abstract: An uplink signal transmission method includes receiving, by an active antenna unit of a base station, a first uplink signal sent by a terminal in a first band. The method also includes sending, by the base station, the first uplink signal to a first baseband processing unit of the base station corresponding to a second band for demodulation. The active antenna unit of the base station includes a first array antenna corresponding to the first band and a second array antenna corresponding to the second band. The first band is lower than the second band.

公开(公告)号：US10939307B2

公开(公告)日：2021-03-02

申请号：US16204514

申请日：2018-11-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Guochen Liu ,  Quanzhong Gao ,  Hui Huang ,  Chaoyi Yan

IPC: H04W24/02 ,  H04W24/00 ,  H04B17/14 ,  H04W56/00 ,  H04W88/08

Abstract: A method for calibrating a channel between radio remote unit (RRUs) includes: for each subcarrier in M subcarriers in full bandwidth, instructing, by a baseband unit (BBU), a reference RRU to transceive a calibration signal on the subcarrier by using a reference channel and a preset channel in a preset RRU, and calculating a calibration coefficient; and determining a first correspondence according to M calibration coefficients obtained by means of calculation, where the first correspondence includes a correspondence between a frequency of each subcarrier and the calibration coefficient on the subcarrier, 2≤M

公开(公告)号：US11234294B2

公开(公告)日：2022-01-25

申请号：US16749103

申请日：2020-01-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Quanzhong Gao ,  Heng Xu ,  Guochen Liu ,  Liwei Ge ,  Jianbiao Xu ,  Senbao Guo

IPC: H04W88/08 ,  H04W16/28 ,  H04W72/04 ,  H04W72/10

Abstract: This application provides example data dimension reduction methods, apparatus, and systems, computer devices, and storage mediums, and relates to the communications field. One example method includes receiving an antenna domain received signal, where the antenna domain received signal includes an uplink signal that is received from UE by an array antenna corresponding to an RRS, wherein the antenna domain received signal is a time domain signal, a dimension of the antenna domain received signal is N1, and N1 is an integer greater than 1. A received beam weight is obtained based on channel information of the UE. Dimension reduction is performed on the antenna domain received signal by using the received beam weight to obtain a beam domain received signal, where the beam domain received signal is a frequency domain signal, a dimension of the beam domain received signal is N2, and 0

公开(公告)号：US10812159B2

公开(公告)日：2020-10-20

申请号：US16519352

申请日：2019-07-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jiesheng Huang ,  Xiangyang Liu ,  Jian Min ,  Guichun Zhuang ,  Xitao Dai ,  Guochen Liu

IPC: H04B7/06 ,  H04B7/08 ,  H04W88/08

Abstract: Embodiments of this application provide an antenna calibration method and apparatus. In the method, for a first antenna unit and a second antenna unit, candidate phase compensation coefficients used for antenna calibration are determined based on channel responses indicating that a first calibration signal sent by the first antenna unit is received by the first antenna unit and the second antenna unit and channel responses indicating that a second calibration signal sent by the second antenna unit is received by the first antenna unit and the second antenna unit; and a phase compensation coefficient is selected from the candidate phase compensation coefficients based on measurement on an uplink signal sent by user equipment.