公开(公告)号：US20140233710A1

公开(公告)日：2014-08-21

申请号：US14266522

申请日：2014-04-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jianping Tu ,  Jie Lv ,  Jinxiong LV

IPC: H04B3/32 ,  H04B3/46

CPC classification number: H04B3/32 ,  H04B3/487 ,  H04M3/18 ,  H04M3/306

Abstract: The present invention provides a method, an apparatus, and a system for reducing digital subscriber line interference. The method includes identifying at least one legacy digital subscriber line in a digital subscriber line DSL legacy line set, obtaining a target power spectral density mask value of the legacy digital subscriber line, and reducing power spectral density of a transmit signal on the legacy digital subscriber line according to the target power spectral density mask value.

Abstract translation: 本发明提供一种减少数字用户线干扰的方法，装置和系统。 该方法包括识别数字用户线DSL传统线路组中的至少一个传统数字用户线路，获得传统数字用户线路的目标功率频谱密度掩码值，以及降低传统数字用户上的发射信号的功率谱密度 线根据目标功率谱密度掩模值。

公开(公告)号：US20190007097A1

公开(公告)日：2019-01-03

申请号：US16125301

申请日：2018-09-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianping Tu

IPC: H04B3/487 ,  H04B3/32 ,  H04L12/64 ,  H04L1/00

Abstract: A line synchronization method in an overlapped spectrum duplex (OSD) system having K pairs of communications lines. Each pair of communications lines includes an uplink and a downlink. The method includes synchronizing downstream synchronization symbols of downlinks in the pairs of communications lines, and separately synchronizing an upstream synchronization symbol of an uplink of each pair of communications lines with a downstream synchronization symbol of a downlink of each pair of communications lines. The method may be applied to crosstalk channel estimation to distinguish near-end crosstalk (NEXT) and far-end crosstalk (FEXT) crosstalk channels when upstream and downstream spectrums are overlapped.

公开(公告)号：US10097238B2

公开(公告)日：2018-10-09

申请号：US15250144

申请日：2016-08-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianping Tu

IPC: H04B3/32 ,  H04B3/487 ,  H04L1/00 ,  H04L12/64

Abstract: A line synchronization method in an overlapped spectrum duplex OSD system having K pairs of communications lines. Each pair of communications lines includes an uplink and a downlink. The method includes synchronizing downstream synchronization symbols of downlinks in all of the pairs of communications lines, and separately synchronizing an upstream synchronization symbol of an uplink of each pair of communications lines with a downstream synchronization symbol of a downlink of each pair of communications lines. The method may be applied to crosstalk channel estimation to distinguish NEXT and FEXT crosstalk channels when upstream and downstream spectrums are overlapped.

公开(公告)号：US09756178B2

公开(公告)日：2017-09-05

申请号：US15412678

申请日：2017-01-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianping Tu ,  Zhong Pan

IPC: H04M1/24 ,  H04M3/08 ,  H04M3/22 ,  H04M3/34 ,  H04B3/487 ,  H04L12/64

CPC classification number: H04M3/34 ,  H04B3/487 ,  H04L12/6418 ,  H04L25/0204 ,  H04L25/0228 ,  H04L25/03159 ,  H04L27/2613 ,  H04L2012/6478 ,  H04M11/062

Abstract: A crosstalk processing method, an apparatus, and a system comprise a transceiver of a line that generates, respectively according to pilot sequences allocated by a vectoring control entity, pilot training signals that are within different spectral ranges and that satisfy a preset relationship with a pilot training signal of another line such that a receiver of the line can determine sample errors respectively according to the different pilot training signals. A vectoring control entity then determines crosstalk channel coefficients from the other line into an inband spectrum and an out-of-band spectrum of the line, and performs precoding processing on a to-be-sent data signal of the line to eliminate impact of crosstalk from the other line to the inband and out-of-band spectrums of the line.

公开(公告)号：US09712208B2

公开(公告)日：2017-07-18

申请号：US14611553

申请日：2015-02-02

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jianping Tu ,  Jie Lv ,  Xiang Wang

IPC: H04B3/32 ,  H04L25/02

CPC classification number: H04B3/32 ,  H04L25/0224

Abstract: The present invention provides a method and an apparatus for training a Vector coefficient of a vectored digital subscriber line, where the method includes: after a handshake phase is executed for a joining line, calculating, by using a pilot estimation method, an initial precoding coefficient and an initial cancellation coefficient that represent interference from the joining line to a normal working line; and after a channel discovery phase is executed for the joining line, compensating the initial precoding coefficient and the initial cancellation coefficient by using a compensation factor, to obtain a precoding coefficient and a cancellation coefficient that represent the interference from the joining line to the normal working line, wherein the compensation factor is obtained according to a signal power change or a signal phase change of the joining line. The present invention improves efficiency of Vector coefficient training.

公开(公告)号：US20170134569A1

公开(公告)日：2017-05-11

申请号：US15412678

申请日：2017-01-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianping Tu ,  Zhong Pan

IPC: H04M3/34 ,  H04L12/64 ,  H04B3/487

CPC classification number: H04M3/34 ,  H04B3/487 ,  H04L12/6418 ,  H04L25/0204 ,  H04L25/0228 ,  H04L25/03159 ,  H04L27/2613 ,  H04L2012/6478 ,  H04M11/062

Abstract: A crosstalk processing method, an apparatus, and a system comprise a transceiver of a line that generates, respectively according to pilot sequences allocated by a vectoring control entity, pilot training signals that are within different spectral ranges and that satisfy a preset relationship with a pilot training signal of another line such that a receiver of the line can determine sample errors respectively according to the different pilot training signals. A vectoring control entity then determines crosstalk channel coefficients from the other line into an inband spectrum and an out-of-band spectrum of the line, and performs precoding processing on a to-be-sent data signal of the line to eliminate impact of crosstalk from the other line to the inband and out-of-band spectrums of the line.

公开(公告)号：US09014291B2

公开(公告)日：2015-04-21

申请号：US14176227

申请日：2014-02-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yahong Gao ,  Jianping Tu ,  Dawei Sun

IPC: H04B7/02 ,  H04L1/02 ,  H04B3/46 ,  H04M3/34 ,  H04M11/06 ,  H04B3/32

CPC classification number: H04B3/46 ,  H04B3/32 ,  H04B3/487 ,  H04M3/34 ,  H04M11/062

Abstract: Embodiments of the present invention provide a method and an apparatus for analyzing crosstalk between lines, where the method includes: performing frequency spectrum notching on a specific frequency band of lines of which the number is a first number among multiple lines, collecting a first group of state performance parameters of each line of lines of which the number is a second number among the multiple lines; canceling frequency spectrum notching on the specific frequency band of the to-be-analyzed line, collecting a second group of state performance parameters of each line of the lines of which the number is the second number; and determining, according to the first and second groups of state performance parameters, crosstalk of each line of the lines of which the number is the second number into the to-be-analyzed line on the specific frequency band.

Abstract translation: 本发明的实施例提供了一种用于分析线路之间的串扰的方法和装置，其中所述方法包括：在多条线路中的数字是第一数量的线路的特定频带上执行频谱切口，收集第一组 多行中每行行数为第二数的状态性能参数; 消除要分析线路的特定频带上的频谱切口，收集数字为第二数的线路的每行的第二组状态性能参数; 以及根据所述第一和第二组状态性能参数，将所述数量为所述第二数量的行的每条线的串扰确定到所述特定频带上的待分析线路中。