公开(公告)号：US20180212667A1

公开(公告)日：2018-07-26

申请号：US15745037

申请日：2016-03-31

Applicant: Huawei Technologies Co., Ltd.

Inventor： Pinhui Chen ,  Kheng Hong Ang

IPC: H04B7/08 ,  H04B17/17 ,  H04B17/21

CPC classification number: H04B7/08 ,  H04B7/04 ,  H04B17/17 ,  H04B17/21 ,  H04B17/318

Abstract: A fault detection method and a fault detection device for external antennas, where the method comprises generating a first detection signal and transmitting the first detection signal using a main antenna, detecting whether a diversity antenna receives the first detection signal, acquiring a signal strength difference between the signals received by the main antenna and the diversity antenna, respectively, determining that the diversity antenna is faulty when the signal strength difference is not less than a first threshold, determining that the main antenna is faulty when the signal strength difference is not larger than a second threshold, and determining that the main antenna and the diversity antenna are faulty when the signal strength difference is larger than the second threshold and less than the first threshold.

公开(公告)号：US20230228818A1

公开(公告)日：2023-07-20

申请号：US18007944

申请日：2021-04-06

Applicant: Huawei Technologies Co., Ltd.

Inventor： Pinhui Chen ,  Weicai Zeng ,  Yuanji He ,  Bo Xie ,  Xiujiang Ma

IPC: G01R31/327 ,  G01R19/165

CPC classification number: G01R31/3278 ,  G01R19/165

Abstract: A fault diagnosis method includes detecting a state of a relay device, sending a fault diagnosis trigger signal to the relay device based on the stateto enable the relay device to enter a fault diagnosis mode, where the fault diagnosis trigger signal includes one or more of a variable supply voltage value, a transmit/receive control signal, and a diagnosis control signal, detecting a state of the relay device in the fault diagnosis mode, determining a fault code based on the state, and determining a fault based on the fault code.

公开(公告)号：US10164700B2

公开(公告)日：2018-12-25

申请号：US15745037

申请日：2016-03-31

Applicant: Huawei Technologies Co., Ltd.

Inventor： Pinhui Chen ,  Kheng Hong Ang

IPC: H04B17/00 ,  H04B7/08 ,  H04B7/04 ,  H04B17/17 ,  H04B17/21

Abstract: A fault detection method and a fault detection device for external antennas, where the method comprises generating a first detection signal and transmitting the first detection signal using a main antenna, detecting whether a diversity antenna receives the first detection signal, acquiring a signal strength difference between the signals received by the main antenna and the diversity antenna, respectively, determining that the diversity antenna is faulty when the signal strength difference is not less than a first threshold, determining that the main antenna is faulty when the signal strength difference is not larger than a second threshold, and determining that the main antenna and the diversity antenna are faulty when the signal strength difference is larger than the second threshold and less than the first threshold.