公开(公告)号：US10033432B2

公开(公告)日：2018-07-24

申请号：US15337688

申请日：2016-10-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianping Tu

IPC: H04B3/32 ,  H04L5/00

Abstract: A method for canceling crosstalk between lines in a DSL system is presented. The method includes obtaining an upstream signal that is sent by corresponding customer premises equipment (CPE) and that is received by each central office (CO), forming an upstream signal sequence including upstream signals of all COs, obtaining a downstream signal that is sent by each CO to the CPE corresponding to each CO, and forming a downstream signal sequence including downstream signals of all the COs; performing FEXT cancellation processing on the upstream signal sequence to obtain a first signal sequence, and processing the downstream signal sequence to determine NEXT signals in the upstream signals of all the COs; and performing NEXT cancellation processing on the first signal sequence using the determined NEXT signals, to obtain a second signal sequence, and sending upstream signals in the second signal sequence to all the COs.

公开(公告)号：US20180069674A1

公开(公告)日：2018-03-08

申请号：US15813426

申请日：2017-11-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Fanglin Sun ,  Cao Shi ,  Zhong Pan ,  Jianping Tu

IPC: H04L5/00 ,  H04L12/28 ,  H04M11/06 ,  H04B3/32

CPC classification number: H04L5/0048 ,  H04B3/32 ,  H04B3/50 ,  H04L5/001 ,  H04L12/2878 ,  H04L43/00 ,  H04M11/062

Abstract: Embodiments of the present invention provide a signal processing method, including: dividing a frequency band used to send a downlink synchronization symbol into at least two parts of frequency bands that do not overlap, where the two parts of frequency bands are a first frequency band and a second frequency band; alternately allocating frequencies in the first frequency band to a probe tone and a flag tone; and allocating all frequencies in the second frequency band to a probe tone; and modulating a downlink pilot sequence to probe tones in the first frequency band and the second frequency band, and sending the downlink pilot sequence to a peer device. The embodiments of the present invention further provide a signal processing apparatus and a network system.

公开(公告)号：US20140153629A1

公开(公告)日：2014-06-05

申请号：US14176227

申请日：2014-02-10

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yahong Gao ,  Jianping Tu ,  Dawei Sun

IPC: H04B3/46

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。

公开(公告)号：US20160365896A1

公开(公告)日：2016-12-15

申请号：US15250144

申请日：2016-08-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianping Tu

IPC: H04B3/487 ,  H04B3/32

CPC classification number: H04B3/487 ,  H04B3/32 ,  H04L1/00 ,  H04L2012/6478

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.

Abstract translation: 具有K对通信线路的重叠频谱双工OSD系统中的线路同步方法。 每对通信线路包括上行链路和下行链路。 该方法包括同步所有通信线对中的下行链路的下行同步符号，以及将每对通信线路的上行链路的上行同步符号与每对通信线路的下行链路的下行同步符号分别同步。 该方法可以应用于串扰信道估计，以在上游和下游频谱重叠时区分NEXT和FEXT串扰信道。

公开(公告)号：US08861712B2

公开(公告)日：2014-10-14

申请号：US14098654

申请日：2013-12-06

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lang Zhou ,  Jianping Tu

IPC: H04M9/08 ,  H04B3/32 ,  H04M3/30

CPC classification number: H04B3/32 ,  H04M3/304 ,  H04M3/34 ,  H04M11/062

Abstract: A method, an apparatus, and a system for reducing line-to-line crosstalk during transmission of a digital subscriber line service are disclosed, where the method includes: before a service is provisioned, obtaining, by a service provider according to a service transmission rate and a topology scenario parameter that are provided by a service receiving side device, a power spectral density of a line in a process of receiving a service by the service receiving side device; and provisioning, by the service provider, a service for the service receiving side device according to the power spectral density.

Abstract translation: 公开了一种用于在数字用户线业务传输期间减少线间串扰的方法，装置和系统，其中所述方法包括：在提供服务之前，由业务提供商根据业务传输 速率和由服务接收侧设备提供的拓扑场景参数，由服务接收侧设备接收服务的过程中的线路的功率谱密度; 以及由服务提供商根据功率谱密度为服务接收侧设备提供服务。

公开(公告)号：US09634721B2

公开(公告)日：2017-04-25

申请号：US14692420

申请日：2015-04-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jianping Tu

IPC: H04B3/32 ,  H04M3/30 ,  H04M3/22 ,  H04M11/06 ,  H04B3/487 ,  H04L12/24 ,  H04L12/26

CPC classification number: H04B3/32 ,  H04B3/487 ,  H04L41/0677 ,  H04L43/0876 ,  H04M3/22 ,  H04M3/306 ,  H04M11/062

Abstract: Embodiments of the present invention relate to a method and an apparatus for sending a single-ended loop testing SELT measurement signal, and a control device. The method for sending a SELT measurement signal includes: aligning a synchronization symbol of a digital subscriber line on which a SELT diagnosis needs to be performed with a synchronization symbol of at least one DSL line for data transmission, where the synchronization symbol of the digital subscriber line on which a SELT diagnosis needs to be performed and the synchronization symbol of the at least one digital subscriber line for data transmission are uplink or downlink synchronization symbols; and carrying a SELT measurement signal over the aligned synchronization symbol of the DSL line on which a SELT diagnosis needs to be performed, where the SELT measurement signal is used to detect transmission quality or a line fault of the DSL line.

公开(公告)号：US08908834B2

公开(公告)日：2014-12-09

申请号：US14266522

申请日：2014-04-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianping Tu ,  Jie Lv ,  Jinxiong Lv

IPC: H04M1/24 ,  H04M3/08 ,  H04M3/22 ,  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：US20140093067A1

公开(公告)日：2014-04-03

申请号：US14098654

申请日：2013-12-06

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Lang Zhou ,  Jianping Tu

IPC: H04B3/32

CPC classification number: H04B3/32 ,  H04M3/304 ,  H04M3/34 ,  H04M11/062

Abstract: A method, an apparatus, and a system for reducing line-to-line crosstalk during transmission of a digital subscriber line service are disclosed, where the method includes: before a service is provisioned, obtaining, by a service provider according to a service transmission rate and a topology scenario parameter that are provided by a service receiving side device, a power spectral density of a line in a process of receiving a service by the service receiving side device; and provisioning, by the service provider, a service for the service receiving side device according to the power spectral density.

Abstract translation: 公开了一种用于在数字用户线业务传输期间减少线间串扰的方法，装置和系统，其中所述方法包括：在提供服务之前，由业务提供商根据业务传输 速率和由服务接收侧设备提供的拓扑场景参数，由服务接收侧设备接收服务的过程中的线路的功率谱密度; 以及由服务提供商根据功率谱密度为服务接收侧设备提供服务。

公开(公告)号：US11095407B2

公开(公告)日：2021-08-17

申请号：US15813426

申请日：2017-11-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Fanglin Sun ,  Cao Shi ,  Zhong Pan ,  Jianping Tu

IPC: H04L5/06 ,  H04L5/00 ,  H04L12/26 ,  H04B3/32 ,  H04L12/28 ,  H04M11/06 ,  H04B3/50

Abstract: Embodiments of the present invention provide a signal processing method, including: dividing a frequency band used to send a downlink synchronization symbol into at least two parts of frequency bands that do not overlap, where the two parts of frequency bands are a first frequency band and a second frequency band; alternately allocating frequencies in the first frequency band to a probe tone and a flag tone; and allocating all frequencies in the second frequency band to a probe tone; and modulating a downlink pilot sequence to probe tones in the first frequency band and the second frequency band, and sending the downlink pilot sequence to a peer device. The embodiments of the present invention further provide a signal processing apparatus and a network system.

公开(公告)号：US20170047967A1

公开(公告)日：2017-02-16

申请号：US15337688

申请日：2016-10-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianping Tu

IPC: H04B3/32 ,  H04L5/00

CPC classification number: H04B3/32 ,  H04L5/0048

Abstract: A method for canceling crosstalk between lines in a DSL system is presented. The method includes obtaining an upstream signal that is sent by corresponding customer premises equipment (CPE) and that is received by each central office (CO), forming an upstream signal sequence including upstream signals of all COs, obtaining a downstream signal that is sent by each CO to the CPE corresponding to each CO, and forming a downstream signal sequence including downstream signals of all the COs; performing FEXT cancellation processing on the upstream signal sequence to obtain a first signal sequence, and processing the downstream signal sequence to determine NEXT signals in the upstream signals of all the COs; and performing NEXT cancellation processing on the first signal sequence using the determined NEXT signals, to obtain a second signal sequence, and sending upstream signals in the second signal sequence to all the COs.

Abstract translation: 提出了一种消除DSL系统中线路间串扰的方法。 该方法包括获得由相应的客户驻地设备（CPE）发送并由每个中心局（CO）接收的上行信号，形成包括所有CO的上行信号的上行信号序列，获得由下行信号发送的下行信号 每个CO到CPE对应于每个CO，并且形成包括所有CO的下行信号的下游信号序列; 对上游信号序列执行FEXT消除处理以获得第一信号序列，并处理下行信号序列以确定所有CO的上行信号中的NEXT信号; 并使用确定的NEXT信号对第一信号序列执行NEXT取消处理，以获得第二信号序列，并将第二信号序列中的上行信号发送到所有CO。