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1.发明申请Method and apparatus for determining modulation levels that are supported on a channel 有权用于确定在信道上支持的调制级别的方法和装置公开(公告)号：US20080200129A1
公开(公告)日：2008-08-21
申请号：US12022249
申请日：2008-01-30
IPC分类号： H04B17/00
CPC分类号： H04N17/004 , G01R29/06 , H04L5/1453 , H04L25/085 , H04L27/0008 , H04L27/0012 , H04L43/50 , H04N21/238 , H04N21/2383 , H04N21/4382
摘要： A logical channel is configured to match a modulation profile of an active channel. A network element is assigned to the logical channel and a ping request is sent to the network element. A response from the network element is measured, such as measuring the MER. The modulation profile is increased in the logical channel and another ping request is sent to the network element. The response is measured again, and the process is repeated until a non-linearity is detected in the response. The acceptable modulation profiles are indicated before the non-linearity is detected in the response.
摘要翻译： 逻辑信道被配置为匹配活动信道的调制简档。 网络元件被分配给逻辑信道，并且ping请求被发送到网络元件。 测量网元的响应，例如测量MER。 调制曲线在逻辑信道中增加，另一个ping请求被发送到网元。 再次测量响应，重复该过程，直到在响应中检测到非线性。 在响应中检测到非线性之前指示可接受的调制曲线。
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2.发明授权Method and apparatus for determining modulation levels that are supported on a channel 有权用于确定在信道上支持的调制级别的方法和装置公开(公告)号：US08265559B2
公开(公告)日：2012-09-11
申请号：US12022249
申请日：2008-01-30
CPC分类号： H04N17/004 , G01R29/06 , H04L5/1453 , H04L25/085 , H04L27/0008 , H04L27/0012 , H04L43/50 , H04N21/238 , H04N21/2383 , H04N21/4382
摘要： A logical channel is configured to match a modulation profile of an active channel. A network element is assigned to the logical channel and a ping request is sent to the network element. A response from the network element is measured, such as measuring the MER. The modulation profile is increased in the logical channel and another ping request is sent to the network element. The response is measured again, and the process is repeated until a non-linearity is detected in the response. The acceptable modulation profiles are indicated before the non-linearity is detected in the response.
摘要翻译： 逻辑信道被配置为匹配活动信道的调制简档。 网络元件被分配给逻辑信道，并且ping请求被发送到网络元件。 测量网元的响应，例如测量MER。 调制曲线在逻辑信道中增加，另一个ping请求被发送到网元。 再次测量响应，重复该过程，直到在响应中检测到非线性。 在响应中检测到非线性之前指示可接受的调制曲线。
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3.发明授权Method and apparatus for determining the dynamic range of an optical link in an HFC network 有权用于确定HFC网络中的光链路的动态范围的方法和装置公开(公告)号：US09088355B2
公开(公告)日：2015-07-21
申请号：US11610177
申请日：2006-12-13
IPC分类号： H04B10/08 , H04B10/079 , H04B10/077 , H04H20/69
CPC分类号： H04B10/07955 , H04B10/077 , H04H20/69
摘要： The dynamic range of an optical link in a network is determined by simultaneously transmitting signals from two network elements at first and second frequencies, which create a combined signal at a third frequency. The transmission power levels of selected network elements is successively increased until the measured power from the third frequency no longer changes in a predictable manner, at which point the upper limit of the dynamic range of the optical link is determined.
摘要翻译： 网络中的光链路的动态范围通过在第一和第二频率同时发送来自两个网络元件的信号来确定，这在第三频率产生组合信号。 所选择的网络元件的发射功率电平连续增加，直到来自第三频率的测量功率不再以可预测的方式改变，此时确定了光链路的动态范围的上限。
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4.发明授权Methods and system for determining a dominant impairment of an impaired communication channel 有权用于确定受损通信信道的主要损伤的方法和系统公开(公告)号：US08081674B2
公开(公告)日：2011-12-20
申请号：US12342733
申请日：2008-12-23
CPC分类号： H04B17/0085 , H04B17/309 , H04B17/318 , H04B17/336 , H04W52/343
摘要： Methods are described for identifying a dominant impairment on a communication channel impaired by an interference issue. The methods include systematic examination of total power loading, systematic examination of signal power reduction, statistical examination of communication channel noise power, and systematic examination of interleaver effectiveness. Each relates to automatically diagnosing and characterizing distortion-based interference issues by monitoring the performance of a communication channel during a testing procedure. These methods enable a technician or engineer to remotely diagnose distortion-based interference issues relatively quickly without having to use external test equipment and without having to deploy technicians to various locations within the cable plant. A system by which these methods can be implemented is also disclosed.
摘要翻译： 描述了用于识别由干扰问题损害的通信信道上的主要损害的方法。 方法包括总功率负载系统检查，信号功率降低系统检测，通信信道噪声功率统计检验，交织器有效性系统检测。 每个都涉及通过在测试过程中监视通信信道的性能来自动诊断和表征基于失真的干扰问题。 这些方法使技术人员或工程师能够相对快速地远程诊断基于失真的干扰问题，而无需使用外部测试设备，也不必将技术人员部署到电缆设备内的各个位置。 还公开了可以实现这些方法的系统。
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5.发明授权公开(公告)号：US08000254B2
公开(公告)日：2011-08-16
申请号：US12342722
申请日：2008-12-23
CPC分类号： H04L43/0823 , H04L43/0829 , H04L43/10 , H04L43/50
摘要： Methods are described for identifying a dominant impairment on a communication channel impaired by an interference issue. The methods include systematic examination of total power loading, systematic examination of signal power reduction, statistical examination of communication channel noise power, and systematic examination of interleaver effectiveness. Each relates to automatically diagnosing and characterizing distortion-based interference issues by monitoring the performance of a communication channel during a testing procedure. These methods enable a technician or engineer to remotely diagnose distortion-based interference issues relatively quickly without having to use external test equipment and without having to deploy technicians to various locations within the cable plant. A system by which these methods can be implemented is also disclosed.
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6.发明授权Efficient use of trusted third parties for additional content-sharing security 有权有效利用信任的第三方进行额外的内容共享安全公开(公告)号：US07742697B2
公开(公告)日：2010-06-22
申请号：US11470034
申请日：2006-09-05
CPC分类号： H04B10/0773
摘要： Network elements are identified as being connected to optical nodes by instructing two network elements in a spectrum group of the CMTS to transmit at frequencies f1 and f2, respectively. Frequencies f1 and f2 are selected such that they produce intermodulation distortions (intermods) in the laser transmitter at f3 when combined. If intermods are produced which exceed a predetermined threshold, then the two network elements are determined to be on the same node. If the total power of the signal by the laser transmitter exceeds an impact threshold, then the test is stopped and new network elements are selected for testing.
摘要翻译： 通过指示CMTS的频谱组中的两个网络单元分别以频率f1和f2进行发送，将网络元件识别为连接到光节点。 选择频率f1和f2使得它们在组合时在f3处产生激光发射机中的互调失真（intermods）。 如果产生超过预定阈值的互调，则确定两个网络元件在同一节点上。 如果激光发射机的信号总功率超过冲击阈值，则停止测试，并选择新的网络元件进行测试。
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7.发明申请METHOD AND APPARATUS FOR UPDATING EQUALIZATION COEFFICIENTS OF ADAPTIVE PRE-EQUALIZERS 有权用于更新自适应均衡器的均衡系数的方法和装置公开(公告)号：US20130051442A1
公开(公告)日：2013-02-28
申请号：US13221531
申请日：2011-08-30
申请人： Michael J. Cooper , Charles S. Moore , John L. Moran , Marc L. Morrissette , Robert J. Thompson
发明人： Michael J. Cooper , Charles S. Moore , John L. Moran , Marc L. Morrissette , Robert J. Thompson
CPC分类号： H04L25/03006 , H04L25/03885
摘要： A method and apparatus for updating equalization coefficients of an adaptive pre-equalizer of a network element are provided. The method includes monitoring a communications channel to measure distortion of a communications signal received from the network element and detecting whether a transient impairment is present in the communication signal. When a transient impairment is not detected to be present, a pre-equalization coefficient update is transmitted to the network element. However, when a transient impairment is detected to be present, at least selected ones of the pre-equalization coefficients are scaled before the update is transmitted to the network element or the update is withheld from being transmitted to the network element. An apparatus is also disclosed.
摘要翻译： 提供了一种用于更新网元的自适应预均衡器的均衡系数的方法和装置。 该方法包括监视通信信道以测量从网络单元接收的通信信号的失真并检测通信信号中是否存在瞬时损害。 当没有检测到存在瞬时损害时，将预均衡系数更新发送到网元。 然而，当检测到瞬时损害存在时，在将更新发送到网络元件之前至少选择一个预均衡系数被缩放，或者更新被拒绝发送到网络元件。 还公开了一种装置。
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8.发明申请Method and Apparatus for Characterizing Modulation Schemes in an HFC Network 有权用于表征HFC网络中调制方案的方法和装置公开(公告)号：US20080101210A1
公开(公告)日：2008-05-01
申请号：US11613823
申请日：2006-12-20
IPC分类号： H04J9/00
CPC分类号： H04B10/0775 , H04B10/079 , H04L1/0003 , H04L1/002
摘要： The available modulation schemes of a network are analyzed to determine which ones contain excessive phase noise or narrowband interference. A network element is selected and assigned to a test channel at a first modulation scheme at a predetermined power level to achieve a predetermined PER. The network element transmits a test signal and the network controller measures the signal to noise ratio (SNR) in the received test signal. If the SNR is not within a predetermined tolerance range of an estimated SNR for the modulation scheme at the predetermined PER, the modulation scheme is determined to have excessive phase noise or narrowband interference. Each available modulation scheme is tested by instructing the network element to transmit the test signal using each modulation scheme and assigning the power level of each modulation scheme. The suitable modulation schemes may be determined.
摘要翻译： 分析网络的可用调制方案以确定哪些包含过多的相位噪声或窄带干扰。 以预定功率电平选择并以第一调制方案将测试信道分配给测试信道以实现预定的PER。 网络元件发送测试信号，网络控制器测量接收到的测试信号中的信噪比（SNR）。 如果SNR在预定的PER下不在调制方案的估计SNR的预定公差范围内，则调制方案被确定为具有过大的相位噪声或窄带干扰。 每个可用的调制方案通过指示网络单元使用每个调制方案发送测试信号并分配每个调制方案的功率电平来测试。 可以确定合适的调制方案。
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9.发明授权Using equalization coefficients of end devices in a cable television network to determine and diagnose impairments in upstream channels 有权使用有线电视网络中的终端设备的均衡系数来确定和诊断上游信道中的损伤公开(公告)号：US08526485B2
公开(公告)日：2013-09-03
申请号：US12565185
申请日：2009-09-23
申请人： Robert J. Thompson , Michael J. Cooper , Charles S. Moore , John L. Moran , Marc L. Morrissette
发明人： Robert J. Thompson , Michael J. Cooper , Charles S. Moore , John L. Moran , Marc L. Morrissette
CPC分类号： H04B10/25751
摘要： A system estimates impairment contributions for upstream communications in a cable television system. The system receives equalization coefficients used by end devices in the cable television system. The equalization coefficients are used by equalizers to mitigate distortion in upstream channels for the end devices. The system analyzes the coefficients based on impairment thresholds to determine whether impairment problems exist and to identify the types of impairment problems that exist.
摘要翻译： 系统估计有线电视系统中上游通信的损失贡献。 系统接收有线电视系统中终端设备使用的均衡系数。 均衡器使用均衡系数来减轻终端设备的上行信道中的失真。 系统根据损失阈值分析系数，确定是否存在减值问题，并确定存在的减值问题的类型。
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10.发明申请USING EQUALIZATION COEFFICIENTS OF END DEVICES IN A CABLE TELEVISION NETWORK TO DETERMINE AND DIAGNOSE IMPAIRMENTS IN UPSTREAM CHANNELS 有权使用电缆电视网络中的终端设备的均衡系数来确定和诊断上游通道的影响公开(公告)号：US20110069745A1
公开(公告)日：2011-03-24
申请号：US12565185
申请日：2009-09-23
申请人： Robert J. Thompson , Michael J. Cooper , Charles S. Moore , John L. Moran , Marc L. Morrissette
发明人： Robert J. Thompson , Michael J. Cooper , Charles S. Moore , John L. Moran , Marc L. Morrissette
CPC分类号： H04B10/25751
摘要： A system estimates impairment contributions for upstream communications in a cable television system. The system receives equalization coefficients used by end devices in the cable television system. The equalization coefficients are used by equalizers to mitigate distortion in upstream channels for the end devices. The system analyzes the coefficients based on impairment thresholds to determine whether impairment problems exist and to identify the types of impairment problems that exist.
摘要翻译： 系统估计有线电视系统中上游通信的损失贡献。 系统接收有线电视系统中终端设备使用的均衡系数。 均衡器使用均衡系数来减轻终端设备的上行信道中的失真。 系统根据损失阈值分析系数，确定是否存在减值问题，并确定存在的减值问题的类型。
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