公开(公告)号：US09564946B2

公开(公告)日：2017-02-07

申请号：US15182174

申请日：2016-06-14

Applicant: IKANOS Communications, Inc.

Inventor： Laurent Francis Alloin ,  James T. Schley May ,  Arnold Muralt ,  Vinay Kumar Chapala

IPC: H04B3/46 ,  H04B3/487 ,  H04B3/32 ,  H04L25/08

CPC classification number: H04B3/487 ,  H04B3/30 ,  H04B3/32 ,  H04L25/085

Abstract: The present invention relates generally to addressing performance issues in xDSL communication systems, and more particularly to methods and apparatuses to measure and characterize CM noise impacting a DSL line in a customer premises, measurements and characterization of the projection of these CM signals in Differential Mode (DM), and finally a derivation of an estimate of the loop balance.

Abstract translation: 本发明一般涉及解决xDSL通信系统中的性能问题，更具体地涉及测量和表征影响客户住宅中的DSL线路的CM噪声的方法和装置，这些CM信号在差分模式下的投影的测量和表征（ DM），最后推导环路平衡的估计。

公开(公告)号：US09461704B2

公开(公告)日：2016-10-04

申请号：US14466216

申请日：2014-08-22

Applicant: IKANOS COMMUNICATIONS, INC.

Inventor： Vipin Pathak ,  Stephen Muccione ,  Sushil Prabhu ,  Bhupinder Thakur

IPC: H04B1/38 ,  H04B3/46

CPC classification number: H04B3/46 ,  H04L43/50 ,  H04M1/24 ,  H04M3/304 ,  H04M3/306 ,  H04M11/062

Abstract: According to certain aspects, embodiments of the invention relate to methods and apparatuses for performing diagnostics on a loop in a communications system. According to certain aspects, embodiments of the invention include performing SELT from a customer premises side of the loop. According to certain other aspects, embodiments of the invention address the issue of initiating a CPE side SELT procedure and also collecting the diagnostics data while a CPE is offline.

Abstract translation: 根据某些方面，本发明的实施例涉及用于在通信系统中的循环上执行诊断的方法和装置。 根据某些方面，本发明的实施例包括从环路的客户驻地侧执行SELT。 根据某些其他方面，本发明的实施例解决了启动CPE侧SELT过程的问题，并且还在CPE离线时收集诊断数据。

公开(公告)号：US09397781B2

公开(公告)日：2016-07-19

申请号：US14661177

申请日：2015-03-18

Applicant: IKANOS COMMUNICATIONS, INC.

Inventor： Julien Daniel Pons ,  Murli Mohan Rao

IPC: H04L1/00 ,  H04M3/18 ,  H04M3/30 ,  H04L1/20 ,  H04L27/36 ,  H04L27/34

CPC classification number: H04L1/0003 ,  H04L1/0065 ,  H04L1/20 ,  H04L27/3488 ,  H04L27/366 ,  H04M3/18 ,  H04M3/306

Abstract: According to certain aspects, the present invention improves upon the conventional TCAM scheme by allowing a traditional TCM scheme to be used while in RCM mode. In a RCM mode according to embodiments of the invention, the system uses traditional TCM+SNR margin (i.e. SNRM) with a receiver controlled bit allocation table (BAT) and tone ordering table (TOT). In a TCAM mode according to embodiments of the invention, the system uses uncoded hierarchical modulation similar to the modulation originally proposed for TCAM. According to certain aspects, the transmitter in RCM mode in embodiments of the invention can determine when line conditions require a switch to TCAM mode, and signal the transition to the receiver. Likewise, when in a TCAM mode according to embodiments of the invention, the receiver can request to switch back to RCM via a SRA mechanism, for example.

Abstract translation: 根据某些方面，本发明通过在RCM模式下允许使用传统的TCM方案来改进传统的TCAM方案。 在根据本发明的实施例的RCM模式中，系统使用具有接收机受控位分配表（BAT）和音调排序表（TOT）的传统TCM + SNR余量（即SNRM）。 在根据本发明的实施例的TCAM模式中，系统使用类似于最初为TCAM提出的调制的未编码分级调制。 根据某些方面，在本发明的实施例中的RCM模式中的发射机可以确定线路条件何时需要切换到TCAM模式，并且向转接信号发出信号。 类似地，当根据本发明的实施例的TCAM模式时，接收机可以例如通过SRA机制请求切换回RCM。

公开(公告)号：US09385781B2

公开(公告)日：2016-07-05

申请号：US14629115

申请日：2015-02-23

Applicant: IKANOS COMMUNICATIONS, INC.

Inventor： Laurent Francis Alloin ,  James T. Schley May ,  Arnold Muralt ,  Vinay Kumar Chapala

IPC: H04B3/46 ,  H04B3/487 ,  H04B3/32 ,  H04L25/08

CPC classification number: H04B3/487 ,  H04B3/30 ,  H04B3/32 ,  H04L25/085

Abstract: The present invention relates generally to addressing performance issues in xDSL communication systems, and more particularly to methods and apparatuses to measure and characterize CM noise impacting a DSL line in a customer premises, measurements and characterization of the projection of these CM signals in Differential Mode (DM), and finally a derivation of an estimate of the loop balance.

Abstract translation: 本发明一般涉及解决xDSL通信系统中的性能问题，更具体地涉及测量和表征影响客户住宅中的DSL线路的CM噪声的方法和装置，这些CM信号在差分模式下的投影的测量和表征（ DM），最后推导环路平衡的估计。

公开(公告)号：US09385780B2

公开(公告)日：2016-07-05

申请号：US14054552

申请日：2013-10-15

Applicant: IKANOS COMMUNICATIONS, INC.

Inventor： Laurent F. Alloin ,  Laurent Pierrugues ,  Ming Gu

IPC: H04B3/46

CPC classification number: H04L27/2688 ,  H04B3/46 ,  H04L2012/6478

Abstract: The present invention generally relates to a method and apparatus for effectively detecting and characterizing noise and other events affecting a communications system such as digital subscriber lines (DSL). According to certain aspects, the invention includes a noise analysis engine that is embedded in customer premises equipment that classifies noise sources according to their specific characteristics and tracks each noise source in a dynamic manner, in such a way as to provide visibility to the changing noise environment within the customer premises and/or report this environment to a remote entity.

Abstract translation: 本发明一般涉及一种用于有效地检测和表征影响诸如数字用户线（DSL）的通信系统的噪声和其他事件的方法和装置。 根据某些方面，本发明包括噪声分析引擎，其嵌入在客户驻地设备中，其根据其特定特性对噪声源进行分类，并以动态方式跟踪每个噪声源，以提供对变化噪声的可见性 客户驻地内的环境和/或将该环境报告给远程实体。

公开(公告)号：US09178668B2

公开(公告)日：2015-11-03

申请号：US14341576

申请日：2014-07-25

Applicant: IKANOS COMMUNICATIONS, INC.

Inventor： Raghunath Kalavai

IPC: H04B3/46 ,  H04L1/24 ,  H04M11/06

CPC classification number: H04L1/248 ,  H04M3/306 ,  H04M11/062

Abstract: Methods and apparatuses are disclosed for detecting improper connection near the end of an xDSL loop based on separately analyzing the location and levels of time domain signals associated with different transmission bands in an xDSL band plan. In one embodiment, a method is disclosed to separately convert the received test signal data to different sets of time domain data corresponding to different sets of the separate frequency bands, and then to separately analyze the different sets of time domain data to identify an improper connection near the modem.

Abstract translation: 公开了用于在xDSL频带计划中单独分析与不同传输频带相关联的时域信号的位置和电平的情况下，用于检测在xDSL环路结束附近的不正确连接的方法和装置。 在一个实施例中，公开了一种方法，用于将所接收的测试信号数据单独地转换成对应于不同组的各个频带的不同组的时域数据，然后分别分析不同组的时域数据以识别不正确的连接 靠近调制解调器

公开(公告)号：US09036730B2

公开(公告)日：2015-05-19

申请号：US13346638

申请日：2012-01-09

Applicant: Sylvain Flamant ,  Qasem Aldrubi ,  Echere Iroaga ,  Jason Hu

Inventor： Sylvain Flamant ,  Qasem Aldrubi ,  Echere Iroaga ,  Jason Hu

IPC: H04B15/00 ,  H04L27/26

CPC classification number: H04L27/2624 ,  H04L27/2647

Abstract: Peak-to-average ratio reduction is achieved by detecting peaks in an original analog signal that exceed a given threshold. Segments of the original analog signal containing such peaks are treated (e.g., by attenuation) and a composite analog signal is assembled that includes treated and untreated segments of the original analog signal. The composite analog signal is processed to perform analog-to-digital conversion to generate a composite digital signal. Segments of the composite digital signal corresponding to the treated segments of the original analog signal are reverse-treated or otherwise treated again to undo treatment of the segments of the original analog signal. A final output digital signal is generated that corresponds to the original analog signal in digital form.

Abstract translation: 通过检测超过给定阈值的原始模拟信号中的峰值来实现峰值与平均比的降低。 包含这种峰值的原始模拟信号的段被处理（例如通过衰减），并且组合复合模拟信号，其包括原始模拟信号的经处理和未处理的段。 处理复合模拟信号以执行模数转换以产生复合数字信号。 对应于原始模拟信号的处理段的复合数字信号的段被重新处理或以其他方式处理，以解除对原始模拟信号的段的处理。 产生对应于数字形式的原始模拟信号的最终输出数字信号。

公开(公告)号：US08972517B2

公开(公告)日：2015-03-03

申请号：US13456113

申请日：2012-04-25

Applicant: Jonathan J. Black ,  Pramod B. Kaluskar

Inventor： Jonathan J. Black ,  Pramod B. Kaluskar

IPC: G06F15/167 ,  H04L29/08 ,  G06F17/30

CPC classification number: H04L67/2842 ,  G06F17/30902 ,  H04L67/06 ,  H04L67/22 ,  H04L67/289

Abstract: In general, methods and apparatus according to the invention mitigate these and other issues by implementing caching techniques described herein. So when one device in a home network downloads and plays a particular content (e.g., a video, song) from a given site, the content is cached within the network such that the same content is available to be re-played on another device without re-downloading the same content from the Internet.

Abstract translation: 通常，根据本发明的方法和装置通过实现本文描述的缓存技术来缓解这些和其它问题。 因此，当家庭网络中的一个设备从给定站点下载并播放特定内容（例如，视频，歌曲）时，内容被缓存在网络内，使得相同的内容可用于在另一个设备上重新播放，而没有 从互联网重新下载相同的内容。

公开(公告)号：US08897347B2

公开(公告)日：2014-11-25

申请号：US14144116

申请日：2013-12-30

Applicant: Ikanos Communications, Inc.

Inventor： Nicholas P. Sands ,  Kevin D. Fisher

IPC: H04B1/38 ,  H04L5/16 ,  H04M11/06 ,  H04B3/46 ,  H04B3/32

CPC classification number: H04B3/32 ,  H04B3/487 ,  H04M11/062 ,  Y02D50/44

Abstract: A vectored DSL system reduces or eliminates correlated alien interference in active DSL lines in the vectored system by collecting pseudo signals from inactive lines that do not carry upstream DSL transmissions and/or from common-mode voltage signals from active lines. The collected pseudo signals contain in-domain interference, such as FEXT interference from the active DSL lines in the vectored system, and correlated alien interference. After removing the in-domain interference from the pseudo signals, the remaining alien interference data can be used to generate FEXT cancellation coefficients or the like that are used in DSL vectoring to remove the correlated alien interference from upstream DSL user signals from the active DSL lines. The generated FEXT cancellation coefficients are used in a manner analogous to in-domain FEXT data collected from the active lines during training, tracking, etc.

Abstract translation: 矢量DSL系统通过从不带有上行DSL传输和/或来自有源线路的共模电压信号的非活动线路收集伪信号来减少或消除向量系统中活动DSL线路中的相关外来干扰。 所收集的伪信号包含域内干扰，例如来自向量系统中的活动DSL线路的FEXT干扰以及相关的外部干扰。 在从伪信号中去除域内干扰之后，剩余的外来干扰数据可用于产生用于DSL矢量化中的FEXT消除系数等，以消除来自有源DSL线路的上游DSL用户信号的相关外来干扰 。 生成的FEXT抵消系数以类似于在训练，跟踪等期间从活动线收集的域内FEXT数据的方式使用。

公开(公告)号：US08817907B2

公开(公告)日：2014-08-26

申请号：US12412191

申请日：2009-03-26

Applicant: Massimo Sorbara ,  Patrick Duvaut ,  Amitkumar Mahadevan ,  Laurent Francis Alloin

Inventor： Massimo Sorbara ,  Patrick Duvaut ,  Amitkumar Mahadevan ,  Laurent Francis Alloin

IPC: H04L27/10

CPC classification number: H04L1/0045 ,  H04L1/1671 ,  H04L1/243

Abstract: The measurement of far-end crosstalk (FEXT) in a Digital Subscriber Line communications is instrumental in the ability of using a multiple input multiple output (MIMO) pre-coder to cancel FEXT. A reliable robust back channel for transmission of error is instrumental to provide error samples for the proper operation of a MIMO pre-coder. Bins can be dedicated to insure bandwidth from the customer premises equipment (CPE) to the central office (CO). By increasing the margin used in the bins, robustness can be added to this back channel between the CPE and CO.

Abstract translation: 数字用户线路通信中远端串扰（FEXT）的测量有助于使用多输入多输出（MIMO）预编码器取消FEXT。 用于错误传输的可靠的鲁棒后置信道对于为MIMO预编码器的正确操作提供错误样本是有用的。 可以专门用于保证客户端设备（CPE）到中心局（CO）的带宽。 通过增加机箱中使用的余量，可以在CPE和CO之间的后向通道中增加鲁棒性。