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1. 发明授权

US06760847B1 Method for performing subscriber loop disturber recognition by comparing measured sample power spectral densities with a set of known power spectral densities 失效
标题翻译：通过将测量的样本功率谱密度与已知功率谱密度的集合进行比较来执行用户环路干扰识别的方法
公开(公告)号：US06760847B1
公开(公告)日：2004-07-06
申请号：US09548746
申请日：2000-04-13
申请人： Gin Liu , Liqian Yao , Michael A. Campbell , Gary T. Stone
发明人： Gin Liu , Liqian Yao , Michael A. Campbell , Gary T. Stone
IPC分类号： H04M176
CPC分类号： H04M3/30 , H04L1/0002 , H04L1/20 , H04M3/18 , H04M3/34
摘要： To identify interference from other data carrying subscriber loops (i.e., from loop disturbers), a power spectral density sample may be obtained from the subscriber loop under consideration based on at least one measurement while the loop is not transmitting data. The sample power spectral density may then be correlated with each one of a set of known power spectral densities. Each known power spectral density represents a power spectral density in a loop which is not transmitting data in the presence of one of (i) no subscriber loop disturbers, (ii) a particular subscriber loop disturber, and (iii) particular subscriber loop disturbers. Based on the correlations, subscriber loop disturbers may be recognized.
摘要翻译：为了识别来自携带用户环路（即，环路干扰器）的其他数据的干扰，可以在循环不发送数据的情况下基于至少一次测量从所考虑的用户环路获得功率谱密度样本。然后可以将样本功率谱密度与一组已知功率谱密度中的每一个相关联。每个已知的功率谱密度表示循环中的功率谱密度，其不存在以下（i）没有用户环路干扰器，（ii）特定用户环路干扰器和（iii）特定用户环路干扰器之一）的情况下传输数据。基于相关性，可以识别用户环路干扰器。

2. 发明授权

US07391780B1 Method and apparatus for statistical prediction of access bandwidth on an xDSL network 有权
标题翻译：用于xDSL网络上接入带宽统计预测的方法和装置
公开(公告)号：US07391780B1
公开(公告)日：2008-06-24
申请号：US10417321
申请日：2003-04-16
申请人： Gary T. Stone , Kim B. Crawford , Nelson M. Lee , Gin Liu , Johnny Fung , Michael A. Campbell
发明人： Gary T. Stone , Kim B. Crawford , Nelson M. Lee , Gin Liu , Johnny Fung , Michael A. Campbell
IPC分类号： H04L12/56
CPC分类号： H04L41/147 , H04L41/0896 , H04L41/22 , H04L43/0882
摘要： Achieved bandwidths for existing subscribers are collected and organized into a statistical bandwidth table utilizing characterizing information, such as the Central Office (CO) that provided the service, the type of xDSL service that was provided, the primary, secondary, and other cable segments over which service was provided, and the subscriber loop length increment. To estimate anticipated bandwidth for a new subscriber, the new subscriber's characterizing information is obtained and used to select one or more entries from the statistical bandwidth table of statistical actual bandwidths achieved by other users that most closely matches the new subscriber's characterizing information. The statistical bandwidth information for the other similarly situated subscribers is used as an estimate bandwidth information for the new subscriber.
摘要翻译：利用特征信息，例如提供服务的中心局（CO），提供的xDSL服务的类型，主要，次要和其他电缆段的类型，收集并组织到现有用户的已实现带宽并组织成统计带宽表提供哪个服务，以及用户环路长度增量。为了估计新用户的预期带宽，获得新用户的特征信息，并用于从与新用户的表征信息最匹配的其他用户实现的统计实际带宽的统计带宽表中选择一个或多个条目。用于其他类似位置的用户的统计带宽信息被用作新用户的估计带宽信息。

3. 发明授权

US06266395B1 Single-ended subscriber loop qualification for xDSL service 有权
标题翻译： xDSL服务的单端用户环路资格
公开(公告)号：US06266395B1
公开(公告)日：2001-07-24
申请号：US09389360
申请日：1999-09-03
申请人： Gin Liu , Michael A. Campbell
发明人： Gin Liu , Michael A. Campbell
IPC分类号： H04M124
CPC分类号： H04M3/306 , H04B3/46 , H04M3/005 , H04M3/30 , H04M3/305
摘要： A method and apparatus for single-ended qualification of subscriber loops for xDSL services is described. The method involves first screening a subscriber loop database record for disqualifying devices or services on the subscriber loop. If none are found, a set of predetermined electrical characteristics of the subscriber loop are derived from information in the database, or directly measured using test equipment at a central office end of the subscriber loop. The electrical characteristics are used to compute an available bandwidth on the subscriber loop for xDSL services. The advantage is the rapid and inexpensive qualification of subscriber loops which reduces response time to potential customer queries and facilitates deployment of xDSL services.
摘要翻译：描述了用于xDSL服务的用户环路单端限定的方法和装置。该方法首先筛选用户环路数据库记录以取消用户环路上的设备或服务的资格。如果没有找到，则从数据库中的信息导出订户环路的一组预定的电气特性，或者直接使用用户环路的中心局端的测试设备测量。电气特性用于计算xDSL业务的用户环路的可用带宽。优点是用户回路的快速和便宜的资格，减少了对潜在客户查询的响应时间，并促进了xDSL服务的部署。

4. 发明授权

US07564895B2 Method and apparatus for monitoring channel frequency response 有权
标题翻译：用于监测信道频率响应的方法和装置
公开(公告)号：US07564895B2
公开(公告)日：2009-07-21
申请号：US10024020
申请日：2001-12-21
申请人： Gin Liu , Andrew Dempster , Mike M. J. Wingrove , Gwendolyn Kate Harris , Michel M. Darveau , Leslie Humphrey , Mohammed Reza Pakravan
发明人： Gin Liu , Andrew Dempster , Mike M. J. Wingrove , Gwendolyn Kate Harris , Michel M. Darveau , Leslie Humphrey , Mohammed Reza Pakravan
IPC分类号： H04B1/38 , H04L5/16
CPC分类号： H04M3/305 , H04L27/2608
摘要： Method and apparatus for retrieving the channel frequency response H(f), the noise N(f), measured at initialization and the signal to noise ratio SNR(f) measured at show time on a per bin basis, in the upstream or downstream direction. Initialization H(f) is used for analyzing the physical copper loop condition between tip and ring. Initialization N(f) is used for analyzing the crosstalk. Showtime SNR(f) is used for analyzing time dependent changes in crosstalk levels and line attenuation. The combination of H(f), N(f) and SNR(f) allows analysis of the line conditions for reaching the maximum data rate of a given loop, scheduling maintenance and plant update.
摘要翻译：用于检索在初始化时测量的信道频率响应H（f），在初始化时测量的噪声N（f）和在每个分组的显示时间在上游或下游方向上测量的信噪比SNR（f）的方法和装置。初始化H（f）用于分析尖端和环之间的物理铜环状况。初始化N（f）用于分析串扰。 Showtime SNR（f）用于分析串扰电平和线路衰减的时间依赖性变化。 H（f），N（f）和SNR（f）的组合允许分析线路条件以达到给定回路的最大数据速率，调度维护和工厂更新。

5. 发明授权

US06785325B1 DSL splitter providing test access to an interconnected subscriber loop and method 失效
标题翻译： DSL分离器提供对互连用户环路和方法的测试访问
公开(公告)号：US06785325B1
公开(公告)日：2004-08-31
申请号：US09588699
申请日：2000-06-07
申请人： Gin Liu , Anthony Peck , Alfred Haw
发明人： Gin Liu , Anthony Peck , Alfred Haw
IPC分类号： H04B138
CPC分类号： H04M3/304 , H04B1/58 , H04L43/50 , H04Q11/045 , H04Q2213/13039 , H04Q2213/13092 , H04Q2213/13099 , H04Q2213/1316 , H04Q2213/1319
摘要： A DSL splitter providing test access to an interconnected subscriber loop and method are disclosed. The DSL splitter in a first test mode, provides access to allow testing of an interconnected subscriber loop by way of a DSL input. A disconnect in series with an associated low pass filter (LPF) disconnects POTS input. Such a splitter may similarly provide access to allow testing of the subscriber loop by way of the POTS input in a second test mode. In this second test mode, a by-pass by-passes the LPF, and a disconnect may disconnect an associated high pass filter (HPF) and DSL input. Preferably, the splitter only assumes its test modes after receipt of authorization from the other provider. The splitter may be controllable by way of a control circuit having an access port used to receive commands to have the splitter assume its normal, or first or second test mode. The splitter may assume its normal operating mode from a test mode, after expiry of a timeout timer.
摘要翻译：公开了一种提供对互连用户环路和方法的测试接入的DSL分离器。在第一测试模式中的DSL分离器提供接入以允许通过DSL输入测试互连的用户环路。与相关的低通滤波器（LPF）串联的断开断开POTS输入。这样的分离器可以类似地提供访问以允许在第二测试模式中通过POTS输入来测试用户回路。在第二个测试模式中，旁路旁路LPF，断开连接可能会断开相关的高通滤波器（HPF）和DSL输入。优选地，分离器仅在从其他提供商接收到授权之后才承担其测试模式。分离器可以通过具有用于接收命令的接入端口的控制电路来控制，以使分离器采用其正常或第一或第二测试模式。在超时定时器到期后，分离器可能会从测试模式中采取其正常工作模式。

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