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21.发明授权Method and apparatus for designing an improved transmit signal for use in a single ended line test (SELT) 有权用于设计用于单端测试（SELT）的改进的发射信号的方法和装置公开(公告)号：US09185204B2
公开(公告)日：2015-11-10
申请号：US14339862
申请日：2014-07-24
发明人： Robin Levonas , Vipin Pathak
CPC分类号： H04M3/2209 , H04B3/46 , H04M3/306
摘要： The present invention relates to methods and apparatuses of using a novel transmit signal that can be used to improve performance of various loop diagnostic features of SELT. In embodiments, a novel transmit signal uses a wide contiguous band of tones that includes frequencies in both upstream and downstream bands. In these and other embodiments of the invention, the SELT transmit signal is designed such that any crosstalk noise in adjacent lines appears as a burst of noise that falls within the limits of the FEC settings of the system such that it can be fully corrected without harming the performance of modems connected on the adjacent lines.
摘要翻译： 本发明涉及使用可用于提高SELT的各种环路诊断特征的性能的新型发射信号的方法和装置。 在实施例中，新颖的发射信号使用包括上行和下行频带中的频率的宽连续频带。 在本发明的这些和其他实施例中，SELT发送信号被设计成使得相邻行中的任何串扰噪声显示为落在系统的FEC设置的限制内的噪声突发，使得其可以在不损害的情况下被完全校正 连接在相邻线路上的调制解调器的性能。
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公开(公告)号：US20150319276A1
公开(公告)日：2015-11-05
申请号：US14703456
申请日：2015-05-04
CPC分类号： H04M1/24 , H04B3/46 , H04M11/06 , H04M11/062
摘要： The present invention provides a method and apparatus to detect a missing micro-filter. In embodiments, the detection is performed by measuring the distortion caused by an unfiltered telephone device using a SELT (Single Ended Line Test) technique. According to certain aspects, the signal used to perform the distortion measurement is designed such that it causes minimal impact on vectored lines within the same cable. Embodiments of the invention first determines the estimated loop length, then uses the loop length to select a set of signal parameters that will be used to perform the distortion measurement. The parameters to be selected include transmit frequency band and PSD level. According to further aspects, embodiments of the invention include automatically running a missing filter test immediately following a line drop to determine if the line drop was caused by a missing micro-filter.
摘要翻译： 本发明提供一种检测缺失的微滤器的方法和装置。 在实施例中，通过使用SELT（单线测试）技术测量由未滤波的电话设备引起的失真来执行检测。 根据某些方面，用于执行失真测量的信号被设计成使得其对相同电缆内的向导线的影响最小。 本发明的实施例首先确定估计的环路长度，然后使用环路长度来选择将用于执行失真测量的一组信号参数。 要选择的参数包括发射频带和PSD电平。 根据另外的方面，本发明的实施例包括在线路下降之后立即自动运行丢失的滤波器测试，以确定线路下降是否由缺失的微滤器引起。
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23.发明申请METHOD AND APPARATUS FOR DESIGNING AN IMPROVED TRANSMIT SIGNAL FOR USE IN A SINGLE ENDED LINE TEST (SELT) 有权用于设计改进的发射信号的方法和装置用于单端测试（SELT）公开(公告)号：US20150030137A1
公开(公告)日：2015-01-29
申请号：US14339862
申请日：2014-07-24
发明人： Robin LEVONAS , Vipin PATHAK
CPC分类号： H04M3/2209 , H04B3/46 , H04M3/306
摘要： The present invention relates to methods and apparatuses of using a novel transmit signal that can be used to improve performance of various loop diagnostic features of SELT. In embodiments, a novel transmit signal uses a wide contiguous band of tones that includes frequencies in both upstream and downstream bands. In these and other embodiments of the invention, the SELT transmit signal is designed such that any crosstalk noise in adjacent lines appears as a burst of noise that falls within the limits of the FEC settings of the system such that it can be fully corrected without harming the performance of modems connected on the adjacent lines.
摘要翻译： 本发明涉及使用可用于提高SELT的各种环路诊断特征的性能的新型发射信号的方法和装置。 在实施例中，新颖的发射信号使用包括上行和下行频带中的频率的宽连续频带。 在本发明的这些和其他实施例中，SELT发送信号被设计成使得相邻行中的任何串扰噪声显示为落在系统的FEC设置的限制内的噪声突发，使得其可以在不损害的情况下被完全校正 连接在相邻线路上的调制解调器的性能。
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公开(公告)号：US20140362985A1
公开(公告)日：2014-12-11
申请号：US14467709
申请日：2014-08-25
摘要： Residual FEXT resulting from intended and/or inherent partial cancellation of crosstalk in vectored DSL systems impairs upstream power back-off (UPBO) as traditionally implemented. By considering and taking into account the effects of residual crosstalk on vectored DSL system performance and operation, improved data rates and/or other vectored DSL system performance are realized through the use of UPBO parameters generated for a given residual FEXT environment.
摘要翻译： 由于矢量DSL系统中串扰的预期和/或固有部分消除而导致的剩余FEXT损害了传统实现的上游功率回退（UPBO）。 通过考虑并考虑残留串扰对矢量DSL系统性能和操作的影响，通过使用为给定的剩余FEXT环境生成的UPBO参数来实现改进的数据速率和/或其他矢量DSL系统性能。
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25.发明申请公开(公告)号：US20140119250A1
公开(公告)日：2014-05-01
申请号：US14065888
申请日：2013-10-29
CPC分类号： H04L5/14 , H04L5/0007 , H04L5/0048 , H04L5/008 , H04L5/1438 , H04L5/1469 , H04L27/2613 , H04L27/2656 , H04L27/2675 , H04L2007/045
摘要： In general, the present invention relates to systems and methods to facilitate timing recovery and loop timing operations in a TDD communication system with significantly varying intervals of inactivity between periods of transmission. According to certain aspects, to facilitate timing recovery, embodiments of the invention define a maximum period of inactivity for each mode of transmission and associated “timing keep alive” signals during and/or between transmissions to assist the timing recovery function in the receiver. In embodiments, the receiver selects the desired format of the “timing keep alive” signal. According to further aspects, the timing recovery mechanisms of the invention maintain power saving objectives of G.fast, where power dissipation varies near linearly with traffic demand.
摘要翻译： 通常，本发明涉及在TDD传输系统中促进定时恢复和循环定时操作的系统和方法，其中传输周期之间具有显着变化的不活动间隔。 根据某些方面，为了便于定时恢复，本发明的实施例为传输期间和/或传输期间的每种传输模式和相关的“定时保持活动”信号定义不活动的最大周期以辅助接收机中的定时恢复功能。 在实施例中，接收机选择“定时保持活动”信号的期望格式。 根据进一步的方面，本发明的定时恢复机制维持G.fast的功率节省目标，其中功率消耗随着业务需求线性变化。
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公开(公告)号：US20140112380A1
公开(公告)日：2014-04-24
申请号：US14144116
申请日：2013-12-30
发明人： Nicholas P. SANDS , Kevin D. FISHER
IPC分类号： H04B3/32
CPC分类号： H04B3/32 , H04B3/487 , H04M11/062 , Y02D50/44
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US20140112379A1
公开(公告)日：2014-04-24
申请号：US14058112
申请日：2013-10-18
CPC分类号： H04L27/265 , H04B1/1036 , H04B15/00 , H04L2012/6478 , H04M3/18 , H04M11/06 , H04M11/062
摘要： The present invention generally relates to an impulse noise canceller for DSL systems. According to certain aspects, embodiments of the invention provide a dual sensor receiver to deal with the impulse noise effectively. The second sensor can be incorporated by either a common mode or unused differential port. Alternatively a power line sensor can also act as a sensor. According to certain additional aspects, embodiments of the invention provide various alternative implementations of an impulse noise canceller within a DSL receiver. According to still further aspects, embodiments of the invention provide methods for selectively training an impulse noise canceller in the various implementations.
摘要翻译： 本发明一般涉及DSL系统的脉冲噪声消除器。 根据某些方面，本发明的实施例提供了一种双传感器接收器来有效地处理脉冲噪声。 第二个传感器可以通过共模或未使用的差分端口并入。 或者，电力线传感器也可以用作传感器。 根据某些附加方面，本发明的实施例提供DSL接收机内的脉冲噪声消除器的各种替代实现。 根据另外的方面，本发明的实施例提供了用于在各种实现中选择性地训练脉冲噪声消除器的方法。
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28.发明申请METHOD AND APPARATUS FOR DETECTING AND ANALYZING NOISE AND OTHER EVENTS AFFECTING A COMMUNICATION SYSTEM 有权用于检测和分析噪声和影响通信系统的其他事件的方法和装置公开(公告)号：US20140105262A1
公开(公告)日：2014-04-17
申请号：US14054552
申请日：2013-10-15
发明人： Laurent F. ALLOIN , Laurent PIERRUGUES , Ming GU
IPC分类号： H04B3/46
CPC分类号： H04L27/2688 , H04B3/46 , H04L2012/6478
摘要： 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 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.
摘要翻译： 本发明一般涉及有效地检测和表征影响诸如DSL之类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。
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公开(公告)号：US09660695B2
公开(公告)日：2017-05-23
申请号：US15195484
申请日：2016-06-28
CPC分类号： H04B3/32 , H04B3/46 , H04B3/466 , H04B3/487 , H04L12/2856
摘要： The present invention relates to methods and apparatuses for sensing noise sources in a wireline communications environment such as a customer premises environment in a DSL system. In embodiments, the invention includes an additional sensor that is connected to power mains in a DSL customer premises environment either to characterize, at their source, noises coupling into the DSL lines, and/or to mitigate their impact into the DSL lines. One objective is associated with diagnostics that help to better characterize the noise signals themselves and derive correlation of signals sensed from the power mains and their possible projection onto the DSL line. Another objective makes use of these power line sensor signals to mitigate or to eliminate power line noises that make their way onto the DSL line. Example embodiments further include and exploit signals from additional secondary sensors such as secondary common mode, differential mode and phantom mode sensors.
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公开(公告)号：US20170091089A1
公开(公告)日：2017-03-30
申请号：US15276637
申请日：2016-09-26
发明人： Alberto Brizio
IPC分类号： G06F12/084 , G06F12/128
摘要： Techniques are described for reducing shared cache memory requests in a multi-threaded microprocessor-based system. One method includes receiving a request for data from a thread, identifying that the request correlates with a pending request associated with a different thread, combining the request with the pending request based on the identifying, and receiving the data after the combining, the receiving being based on the pending request. In some examples, the request may be associated with an address of a cache line in a cache memory.
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