公开(公告)号：US10470065B2

公开(公告)日：2019-11-05

申请号：US16000555

申请日：2018-06-05

Applicant: Huawei Technologies Co., Ltd.

Inventor： Weiheng Huang ,  Haidi Xu ,  Jiang Fu

IPC: H04W24/08 ,  H04W24/04 ,  H04B1/04 ,  H04B7/022 ,  H04B7/02

Abstract: This application relates to the communications field, and provides an apparatus, a fault location system, and an antenna system, which can be used to locate a faulty node in a DAS, thereby accurately locating a fault source in the DAS. The apparatus includes a signal transmission module sending a detection signal to the branch circuit through an input end of the DAS, and sends a signal processing module the received detection signal and an echo signal returned by the branch circuit, The signal processing module superposes the received detection signal and echo signal. The signal analysis module performs spectrum conversion on the superposed signal, to obtain a frequency difference and amplitude spectrum graph, where the frequency difference and amplitude spectrum graph indicates a correspondence between a location of each node on the main circuit and the branch circuit and an amplitude of the echo signal corresponding to the node.

公开(公告)号：US20230421450A1

公开(公告)日：2023-12-28

申请号：US18339792

申请日：2023-06-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Cheng Sheng ,  Tao Tian ,  Haiyan Jin ,  Jianwei Guo ,  Kun Li ,  Weiheng Huang

IPC: H04L41/12 ,  H04L12/46

CPC classification number: H04L41/12 ,  H04L12/4633

Abstract: Embodiments of this application disclose a tunnel establishment method. A first communication apparatus may receive first adjacency topology information sent by a second communication apparatus, and establish a first tunnel between the first communication apparatus and the second communication apparatus when the first adjacency topology information matches second adjacency topology information of the first communication apparatus. It can be learned that, in this solution, the first communication apparatus may locally store only the second adjacency topology information of the first communication apparatus. Compared with the conventional technology in which information about two endpoints of a tunnel needs to be configured on the first communication apparatus, configuration for the first communication apparatus is simpler.