-
1.发明申请公开(公告)号：US20100158093A1
公开(公告)日：2010-06-24
申请号：US12342733
申请日：2008-12-23
IPC分类号： H04B17/00
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.
-
2.发明申请公开(公告)号：US20100157824A1
公开(公告)日：2010-06-24
申请号：US12342722
申请日：2008-12-23
IPC分类号： H04L12/26
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.
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。
-
3.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。
-
4.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。
-
5.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。
-
6.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.
-
公开(公告)号：US08537972B2
公开(公告)日：2013-09-17
申请号：US11608028
申请日：2006-12-07
IPC分类号： H04M1/24
摘要： The presence of micro-reflections is determined in a network by determining micro-reflections from amplifier and diplex filter impedance mismatches and micro-reflections from drop cable impedance mismatches. The micro-reflections from impedance mismatches are determined by instructing network element to transmit a test signal at a first symbol rate and a first resolution for amplifier and diplex filter impedance mismatches and a second frequency with a second symbol rate and second resolution for micro-reflections from drop cable impedance mismatches. The tests are performed with several frequencies and the channels with the least micro-reflections are identified.
摘要翻译： 通过确定来自放大器的微反射和双重滤波器阻抗失配以及来自引入电缆阻抗失配的微反射，在网络中确定微反射的存在。 来自阻抗失配的微反射通过指示网络元件以第一符号速率和用于放大器和双通道滤波器阻抗失配的第一分辨率和用于微反射的第二符号速率和第二分辨率的第二频率来发送测试信号来确定 从电缆阻抗失配。 测试用几个频率进行，并且识别具有最少微反射的通道。
-
8.发明授权Method and apparatus for characterizing modulation schemes in an HFC network 有权用于表征HFC网络中的调制方案的方法和装置公开(公告)号：US07876697B2
公开(公告)日：2011-01-25
申请号：US11613823
申请日：2006-12-20
IPC分类号： H04L12/26
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。
-
9.发明申请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：US20070223920A1
公开(公告)日：2007-09-27
申请号：US11610177
申请日：2006-12-13
IPC分类号： H04B10/08
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 predicatable 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。
-
10.发明授权Method of characterizing impairments detected by equalization on a channel of a network 有权通过网络的信道上的均衡来检测损伤的特征的方法公开(公告)号：US09136943B2
公开(公告)日：2015-09-15
申请号：US13562261
申请日：2012-07-30
IPC分类号： H04B10/079 , H04B10/66 , H04B3/46 , H04B10/2507 , H04B10/2575 , H04L25/03
CPC分类号： H04B10/0795 , H04B3/46 , H04B10/2507 , H04B10/25751 , H04B10/66 , H04L25/03006
摘要： An automated method of characterizing distortion detected by equalization on a channel of a network is provided. Equalization stress of an observed channel equalization response of an end device of the network is estimated, and equalization stress is calculated for a theoretical channel equalization response of the end device mathematically based on the observed channel equalization response and a theoretical removal of a suspected impairment from the network. The above referenced calculating step is separately repeated for each of a plurality of suspected impairments stored in a database of suspected impairments. A highest ranking suspected dominant impairment is determined from the database of suspected impairments such that removal of the highest ranking suspected dominant impairment from the network would provide a greatest reduction of equalization stress of a channel equalization response of the end device.
摘要翻译： 提供了一种通过网络的信道上的均衡检测的表征失真的自动化方法。 估计网络终端设备的观测信道均衡响应的均衡应力，并且基于所观察到的信道均衡响应和理论上的可疑损伤理论去除来计算终端设备的理论信道均衡响应的均衡应力 网络。 针对存储在疑似损伤的数据库中的多个疑似损伤中的每一个，分别重复上述的计算步骤。 从疑似损伤的数据库中确定最高级别的疑似主要损害，从而从网络中移除最高排名的疑似主要损害可以最大限度地减少终端设备的信道均衡响应的均衡压力。
-
-
-
-
-
-
-
-
-
搜索结果
27 条记录 (耗时 0.028 秒)
