公开(公告)号：US11323190B2

公开(公告)日：2022-05-03

申请号：US16913785

申请日：2020-06-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shun Leng ,  Jian Min ,  Yun Feng

IPC: H04B17/318 ,  H04L5/00 ,  H04W24/08 ,  H04W24/10

Abstract: Radio frequency channel connection detection methods and apparatus, to detect a connection mode between a radio frequency channel and an antenna, thereby reducing difficulty in secondary onsite construction, and improving construction efficiency. The method includes: receiving, by a first radio frequency unit by using each of N to-be-detected radio frequency channels, signals sent by using at least one of N reference radio frequency channels of a reference radio frequency unit; and determining a connection relationship between the N to-be-detected radio frequency channels and N antennas based on the signals received by using each to-be-detected radio frequency channel.

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.

公开(公告)号：US10420172B2

公开(公告)日：2019-09-17

申请号：US16013964

申请日：2018-06-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jian Min

IPC: H04W72/04 ,  H04W88/08 ,  H04W16/14 ,  H04W24/08 ,  H04L25/02 ,  H04B17/14 ,  H04B17/21 ,  H04L5/00

Abstract: An RRU channel frequency response difference obtaining method, device, and system are provided. In the method, multiple RRU channel groups are obtained between a BBU and an RRU, and all RRU channels in each RRU channel group are interconnected by using a same bridge. The method includes: separately obtaining, for a first RRU channel and a second RRU channel that are interconnected in any RRU channel group, a first frequency response difference between the first RRU channel and a separate RRU channel and a second frequency response difference between the second RRU channel and the separate RRU channel, where the separate RRU channel is not in the any RRU channel group; and obtaining a frequency response difference between the first RRU channel and the second RRU channel according to the first frequency response difference and the second frequency response difference.