公开(公告)号：US20180254946A1

公开(公告)日：2018-09-06

申请号：US15971981

申请日：2018-05-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaolong Zhang ,  Chenghu Shen

IPC: H04L12/24 ,  H04L12/28

CPC classification number: H04L41/0677 ,  H04L12/28 ,  H04L12/2801 ,  H04L12/44 ,  H04L43/00

Abstract: Embodiments of the present disclosure disclose a hybrid fiber coaxial (HFC) network fault locating method and apparatus. The method includes: obtaining a fault group in an HFC network; collecting a pre-equalization coefficient of at least one cable modem (CM); enabling a reference fault point that is corresponding to the fault group and whose location is known; collecting the pre-equalization coefficient of the at least one CM again; and determining a relative distance between each fault point in the fault group and the reference fault point according to the pre-equalization coefficient collected twice. In the present disclosure, not only each fault point in a fault group including a plurality of fault points can be located, but also a fault group including only a single fault point can be located.

公开(公告)号：US09985683B2

公开(公告)日：2018-05-29

申请号：US15618795

申请日：2017-06-09

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Fan Wang ,  Xiaoshu Si ,  Tao Ouyang ,  Xiaolong Zhang

IPC: H04L25/03 ,  H04B3/10

CPC classification number: H04B3/10 ,  H04L25/03885

Abstract: Provided are a method and an apparatus for canceling interference, to resolve a problem that performance of interference cancellation is poor because accuracy of equalizer coefficients obtained by a CMTS through calculation is not sufficiently high. A specific solution is as follows: (101) A CMTS calculates L equalizer coefficients of an L-tap filter according to a preamble sequence by using an adaptive algorithm, and performs adaptive equalization on a received signal by using the L equalizer coefficients, where L is a positive integer greater than 24; and (102) the CMTS selects K equalizer coefficients from the L equalizer coefficients, and sends a ranging response message carrying the K equalizer coefficients to a cable modem CM, so that the CM performs pre-equalization on a to-be-sent signal according to the received K equalizer coefficients, where K is a positive integer less than or equal to L.