公开(公告)号：US11121781B2

公开(公告)日：2021-09-14

申请号：US16887644

申请日：2020-05-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Fan Luo ,  Feng Li ,  Yue Liu ,  Chaoyi Yan

IPC: H04W24/00 ,  H04B17/11 ,  H04B17/21

Abstract: This application provides a calibration method: receiving, by a control apparatus of an RRU, resource configuration information, where a time-frequency resource indicated by the resource configuration information is used to send and receive a calibration signal between the RRU and n other RRUs, the n other RRUs are RRUs in a calibration path topology, a quantity of hops of a calibration path between the RRU and each of the n other RRUs is 1; controlling, based on the resource configuration information, the RRU to send and receive a calibration signal on the time-frequency resource; obtaining m groups of path information based on the calibration signal; obtaining m calibration coefficients based on the m groups of path information; and compensating M channels of the RRU by using the m calibration coefficients.