公开(公告)号：US09118982B2

公开(公告)日：2015-08-25

申请号：US13368887

申请日：2012-02-08

申请人： Amiad Dvir ,  Eliezer Weitz

发明人： Amiad Dvir ,  Eliezer Weitz

IPC分类号： H04B10/40 ,  H04B10/077 ,  H04J14/02 ,  H04Q11/00

CPC分类号： H04Q11/0066 ,  H04B10/0771 ,  H04B10/0775 ,  H04B10/40 ,  H04J14/02 ,  H04Q11/0067 ,  H04Q11/0071

摘要： An optical line terminal (OLT) is operable in a passive optical network (PON). The OLT comprises a plurality of optical network units (ONUs), an electrical module for generating continuous downstream signal and processing received upstream burst signals according to a communication protocol of the PON and an optical module for transmitting continuous optical signals over a first wavelength and receiving burst optical signals over a second wavelength. The optical module further includes an ONU traffic processing module is electrically coupled to the optical module and the electrical module. The ONU traffic processing module is configured to emulate one of the ONUs of the PON. An interface is used for interfacing between the electrical module and the optical module.

摘要翻译： 光线路终端（OLT）可在无源光网络（PON）中操作。 OLT包括多个光网络单元（ONU），用于产生连续的下行信号并根据PON的通信协议处理接收到的上行突发信号的电模块以及用于在第一波长上发送连续光信号并接收的光模块 在第二波长上的突发光信号。 光学模块还包括ONU业务处理模块电耦合到光学模块和电气模块。 ONU流量处理模块被配置为模拟PON中的一个ONU。 一个接口用于电气模块和光学模块之间的接口。

公开(公告)号：US20130077975A1

公开(公告)日：2013-03-28

申请号：US13246161

申请日：2011-09-27

申请人： Amiad Dvir ,  Assaf Naor

发明人： Amiad Dvir ,  Assaf Naor

IPC分类号： H04J14/00

CPC分类号： H04B10/071 ,  G01M11/3118 ,  G01M11/3127 ,  G01M11/3136 ,  G01M11/3145

摘要： A system for performing in-band reflection analysis in a passive optical network. The system comprises an optical line terminal (OLT) that includes a transceiver for transmitting continuous downstream data modulated on a first wavelength and receiving upstream burst data modulated on a second wavelength, the OLT further includes a receiver for receiving signals reflected from the PON that are modulated on the first wavelength, wherein the continuous downstream data comprises user data and a test data pattern; and a reflection analysis unit for cross-correlating between a time-shifted version of the transmitted test data pattern and the reflected signals, wherein the test data pattern is time-shifted relatively for an optical location to be tested.

摘要翻译： 一种用于在无源光网络中执行带内反射分析的系统。 该系统包括一个光线路终端（OLT），该光线路终端（OLT）包括用于发送在第一波长上调制的连续下行数据的收发器，并接收在第二波长上调制的上行突发数据，该OLT还包括一个接收机，用于接收从PON反射的信号， 调制在第一波长上，其中连续的下行数据包括用户数据和测试数据模式; 以及反射分析单元，用于在发送的测试数据模式的时移版本与反射信号之间进行互相关，其中测试数据模式相对于要测试的光学位置被时移。

公开(公告)号：US08111985B2

公开(公告)日：2012-02-07

申请号：US12434051

申请日：2009-05-01

申请人： Amiad Dvir ,  Alex Goldstein ,  David Avishai

发明人： Amiad Dvir ,  Alex Goldstein ,  David Avishai

IPC分类号： H04B10/08 ,  H04B10/00

CPC分类号： H04B10/0795

摘要： An apparatus for performing an optical line analysis of continuous data signals. The apparatus comprise a phase position processor for computing a phase early/late indicator; a phase control code processor for computing a difference phase indicator; a frequency extractor for computing a low frequency jitter indicator; and a statistical calculator for computing a plurality of statistical measures regarding frequency and amplitude components of a jitter of an input continuous data signal, wherein the statistical measures are computed based on one of the phase early/late information indicator, the difference phase indicator, or the low frequency jitter indicator.

摘要翻译： 一种用于对连续数据信号进行光线分析的装置。 该装置包括用于计算相位早/晚指标的相位位置处理器; 用于计算差相位指示符的相位控制代码处理器; 用于计算低频抖动指示器的频率提取器; 以及统计计算器，用于计算关于输入连续数据信号的抖动的频率和幅度分量的多个统计测量，其中所述统计测量是基于所述相位早/晚信息指示符，所述差相位指示符或 低频抖动指示器。

公开(公告)号：US20110280568A1

公开(公告)日：2011-11-17

申请号：US13189935

申请日：2011-07-25

申请人： Amiad Dvir ,  Eli Elmoalem

发明人： Amiad Dvir ,  Eli Elmoalem

IPC分类号： H04B10/08

CPC分类号： H04J3/14 ,  H04B10/0771 ,  H04J3/0682 ,  H04J3/1694 ,  H04J2203/006 ,  H04Q11/0067 ,  H04Q2011/0015 ,  H04Q2011/0035 ,  H04Q2011/0081 ,  H04Q2011/0083

摘要： A method for detecting faults and their locations in an optical path between an optical line terminal (OLT) of and optical network units (ONUs) of a passive optical network (PON). The method comprises forming a maintenance optical link through the PON between the OLT and a collocated ONU, the OLT and its collocated ONU are each connected to an optical splitter; sending a ranging request from the OLT to the collocated ONU; in response to the ranging request, receiving, over the maintenance optical line, a ranging burst signal including at least a fault analysis detection pattern (FADP); and analyzing the FADP in the received signal by auto-correlating the FADP signal with an expected FADP signal, an uncorrelated event measured through the auto-correlation is indicative of a fault in the optical path of the PON and occurrence times of such events are indicative of the fault's location in the optical path.

摘要翻译： 一种用于检测无源光网络（PON）的光线路终端（OLT）和光网络单元（ONU）之间的光路中的故障及其位置的方法。 该方法包括在OLT和并置ONU之间通过PON形成维护光链路，OLT及其并置ONU各自连接到光分路器; 从OLT发送到并置的ONU的测距请求; 响应于测距请求，通过维护光线路接收至少包括故障分析检测模式（FADP）的测距脉冲串信号; 并且通过将FADP信号与期望的FADP信号自相关来分析接收信号中的FADP，通过自相关测量的不相关事件表示PON的光路中的故障，并且这些事件的发生时间是指示 的故障位置在光路中。

公开(公告)号：US09118412B2

公开(公告)日：2015-08-25

申请号：US13246161

申请日：2011-09-27

申请人： Amiad Dvir ,  Assaf Naor

发明人： Amiad Dvir ,  Assaf Naor

IPC分类号： H04B10/08 ,  H04B10/20 ,  H04B10/071 ,  G01M11/00

CPC分类号： H04B10/071 ,  G01M11/3118 ,  G01M11/3127 ,  G01M11/3136 ,  G01M11/3145

摘要： A system for performing in-band reflection analysis in a passive optical network. The system comprises an optical line terminal (OLT) that includes a transceiver for transmitting continuous downstream data modulated on a first wavelength and receiving upstream burst data modulated on a second wavelength, the OLT further includes a receiver for receiving signals reflected from the PON that are modulated on the first wavelength, wherein the continuous downstream data comprises user data and a test data pattern; and a reflection analysis unit for cross-correlating between a time-shifted version of the transmitted test data pattern and the reflected signals, wherein the test data pattern is time-shifted relatively for an optical location to be tested.

摘要翻译： 一种用于在无源光网络中执行带内反射分析的系统。 该系统包括一个光线路终端（OLT），该光线路终端（OLT）包括用于发送在第一波长上调制的连续下行数据的收发器，并接收在第二波长上调制的上行突发数据，该OLT还包括一个接收机，用于接收从PON反射的信号， 调制在第一波长上，其中连续的下行数据包括用户数据和测试数据模式; 以及反射分析单元，用于在发送的测试数据模式的时移版本与反射信号之间进行互相关，其中测试数据模式相对于要测试的光学位置被时移。

公开(公告)号：US20130077961A1

公开(公告)日：2013-03-28

申请号：US13246192

申请日：2011-09-27

申请人： Amiad Dvir ,  Assaf Amitai

发明人： Amiad Dvir ,  Assaf Amitai

IPC分类号： H04B10/08

CPC分类号： H04B10/071 ,  H04Q11/0067 ,  H04Q2011/0083

摘要： An apparatus for generating a reflection analysis data pattern (RADP) being utilized for performing a reflection analysis in a PON. The apparatus comprises a data pattern generator for generating a low rate data pattern using a low rate polynomial; a high rate adaptor for increasing a rate of the low rate data pattern to a transmission rate of the PON; first and second scrambler polynomial generators for generating first and second data sequences according to a scrambler polynomial of the PON; a pre-scrambler for scrambling a high-rate data pattern with the first data sequence; a scrambler coupled to the pre-scrambler for scrambling the output of the pre-scrambler with a time-shifted signal of the second data sequence to result with the RADP; and an encapsulator for encapsulating the reflection analysis data pattern output by the scrambler in a plurality of downstream frames transmitted from an OLT to ONUs of the PON.

摘要翻译： 一种用于产生用于在PON中执行反射分析的反射分析数据模式（RADP）的装置。 该装置包括用于使用低速率多项式生成低速数据模式的数据模式发生器; 用于将低速率数据模式的速率提高到PON的传输速率的高速率适配器; 第一和第二加扰多项式生成器，用于根据PON的加扰多项式产生第一和第二数据序列; 预加扰器，用于利用所述第一数据序列对高速率数据模式进行加扰; 加扰器，其耦合到所述预加扰器，用于利用所述第二数据序列的时移信号对所述预加扰器的输出进行加扰以产生所述RADP; 以及封装器，用于将由加扰器输出的反射分析数据模式封装在从OLT发送到PON的ONU的多个下行帧中。

公开(公告)号：US20090274455A1

公开(公告)日：2009-11-05

申请号：US12434051

申请日：2009-05-01

申请人： Amiad DVIR ,  Alex GOLDSTEIN ,  David AVISHAI

发明人： Amiad DVIR ,  Alex GOLDSTEIN ,  David AVISHAI

IPC分类号： H04B10/08

CPC分类号： H04B10/0795

摘要： An apparatus for performing an optical line analysis of continuous data signals. The apparatus comprise a phase position processor for computing a phase early/late indicator; a phase control code processor for computing a difference phase indicator; a frequency extractor for computing a low frequency jitter indicator; and a statistical calculator for computing a plurality of statistical measures regarding frequency and amplitude components of a jitter of an input continuous data signal, wherein the statistical measures are computed based on one of the phase early/late information indicator, the difference phase indicator, or the low frequency jitter indicator.

摘要翻译： 一种用于对连续数据信号进行光线分析的装置。 该装置包括用于计算相位早/晚指标的相位位置处理器; 用于计算差相位指示符的相位控制代码处理器; 用于计算低频抖动指示器的频率提取器; 以及统计计算器，用于计算关于输入连续数据信号的抖动的频率和幅度分量的多个统计测量，其中所述统计测量是基于所述相位早/晚信息指示符，所述差相位指示符或 低频抖动指示器。

公开(公告)号：US20080124092A1

公开(公告)日：2008-05-29

申请号：US11604748

申请日：2006-11-28

申请人： Amiad Dvir ,  Raviv Weber ,  David Avishai ,  Alex Goldstein ,  Igor Elkanovich ,  Gal Sitton ,  Michael Balter

发明人： Amiad Dvir ,  Raviv Weber ,  David Avishai ,  Alex Goldstein ,  Igor Elkanovich ,  Gal Sitton ,  Michael Balter

IPC分类号： H04L7/00 ,  H04B10/00

CPC分类号： H04L7/0337 ,  H04L7/0025 ,  H04L7/005

摘要： Burst mode clock and data recovery (BCDR) circuit and method capable of fast data recovery of passive optical network (PON) traffic. An over-sampled data stream is generated from an input burst data signal and a phase interpolator generates sampling clock signals using a reference clock and phase information. A phase estimation unit (PEU) determines a phase error in the over-sampled data streams; and a phase retrieval unit sets the phase interpolator with the respective phase information of the input burst data signal prior to reception of the input burst data signal.

摘要翻译： 突发模式时钟和数据恢复（BCDR）电路和方法，能够快速地对无源光网络（PON）业务进行数据恢复。 从输入突发数据信号产生过采样数据流，相位内插器使用参考时钟和相位信息产生采样时钟信号。 相位估计单元（PEU）确定过采样数据流中的相位误差; 并且相位检索单元在接收输入的突发数据信号之前，将相位内插器与输入的脉冲串数据信号的各自的相位信息相对应。

公开(公告)号：US08855491B2

公开(公告)日：2014-10-07

申请号：US12648885

申请日：2009-12-29

申请人： Eli Elmoalem ,  Amiad Dvir

发明人： Eli Elmoalem ,  Amiad Dvir

IPC分类号： H04J14/00 ,  H04Q11/00 ,  H04J3/06

CPC分类号： H04Q11/0067 ,  H04J3/0682 ,  H04Q2011/0015 ,  H04Q2011/0035 ,  H04Q2011/0081

摘要： A method for performing a protection in passive optical networks. The method comprises forming a protection maintenance link between an active optical line terminal (OLT) and a standby OLT; forming a synchronization link between the active OLT and the standby OLT; computing a base differential distance value; continuously measuring round trip time (RTT) values by the active OLT using the protection maintenance link; periodically sending at least RTT values calculated by the active OLT to the standby OLT over the synchronization link; and computing, by the standby OLT, a new RTT value based on at least a RTT value measured by the active OLT and a standby differential distance value, when a switch-over action is triggered, thereby allowing the standby OLT to serve optical network units (ONUs) in the PON without performing a ranging process.

摘要翻译： 一种在无源光网络中进行保护的方法。 该方法包括在有源光线路终端（OLT）和备用OLT之间形成保护维护链路; 在主动OLT和备用OLT之间形成同步链路; 计算基差分距离值; 使用保护维护链路连续测量主动OLT的往返时间（RTT）值; 周期性地通过同步链路将由主动OLT计算出的至少RTT值发送到备用OLT; 以及当所述备用OLT在触发切换动作时，至少基于由所述有源OLT测量的RTT值和备用差分距离值来计算新的RTT值，从而允许所述备用OLT服务于光网络单元 （ONU），而不执行测距过程。

公开(公告)号：US08538257B2

公开(公告)日：2013-09-17

申请号：US13306326

申请日：2011-11-29

申请人： Amiad Dvir ,  Alex Goldstein ,  David Avishai

发明人： Amiad Dvir ,  Alex Goldstein ,  David Avishai

IPC分类号： H04B10/08 ,  H04B10/00

CPC分类号： H04B10/0795

摘要： A method for performing an optical line analysis of continuous data signals transmitted in a passive optical network (PON). The method comprises determining, from an optical signal of the optical line, at least one of a phase early/late indicator based on a phase position of an input continuous data signal relative to sampling clock signals, a difference phase indicator based on an input phase control code, and a low frequency jitter indicator based on an input phase control code; computing a plurality of statistical measures regarding frequency and amplitude components of a jitter of the input continuous data signal, wherein the statistical measures are computed based on one of the phase early/late information indicator, the difference phase indicator, and the low frequency jitter indicator; and analyzing the plurality of statistical measures to detect optical failures in the PON and determining a root cause of each of the detected failures.

摘要翻译： 一种用于对在无源光网络（PON）中发送的连续数据信号执行光线分析的方法。 该方法包括：从光线路的光信号，基于相对于采样时钟信号的输入连续数据信号的相位位置来确定相位早/晚指示符中的至少一个，基于输入相位的差相位指示符 控制代码和基于输入相位控制代码的低频抖动指示器; 计算关于输入连续数据信号的抖动的频率和幅度分量的多个统计量度，其中基于相位早/晚信息指示符，差相位指示符和低频抖动指示器之一来计算统计测量值 ; 并且分析多个统计测量以检测PON中的光学故障并确定每个检测到的故障的根本原因。