公开(公告)号：US07925156B2

公开(公告)日：2011-04-12

申请号：US11961789

申请日：2007-12-20

申请人： Raviv Weber ,  Amiad Dvir ,  Eli Elmoalem ,  Alex Goldstein ,  Igor Elkanovich ,  David Avishai

发明人： Raviv Weber ,  Amiad Dvir ,  Eli Elmoalem ,  Alex Goldstein ,  Igor Elkanovich ,  David Avishai

IPC分类号： H04B10/00

CPC分类号： H04B10/0793 ,  H04B10/07953 ,  H04B10/27

摘要： Apparatus and method to measure the quality of burst signals and to perform optical line diagnostics in and optical passive optical network (PON). Statistical information about phase noise (jitter), signal distortion, clock distortions, and any other effects present in burst signals is generated. The statistics are based on phase and bit-length distortions, direction and length of the effect as detected by a phase error detector integrated in a burst mode clock and data recovery (BCDR) circuit. The invention can be further adapted to perform optical line diagnostics to detect the root cause performance degradation and failures in the PON, thereby providing an optical layer supervision tool for monitoring the PON. The statistical information can be used to estimate the quality of service (QoS) per customer connected to the PON. In addition, the generated statistic information can be used to calibrate transmission parameters of optical network unit (ONU) transmitters.

摘要翻译： 测量突发信号质量并在光无源光网络（PON）中进行光线诊断的装置和方法。 产生关于相位噪声（抖动），信号失真，时钟失真以及突发信号中存在的任何其他影响的统计信息。 统计数据是基于集成在突发模式时钟和数据恢复（BCDR）电路中的相位误差检测器检测到的效应的相位和位长度失真，方向和长度。 本发明可以进一步适用于执行光线路诊断，以检测PON的根本原因性能下降和故障，从而提供用于监视PON的光层监督工具。 统计信息可用于估计每个连接到PON的每个客户的服务质量（QoS）。 此外，生成的统计信息可用于校准光网络单元（ONU）发射机的传输参数。

公开(公告)号：US20080193125A1

公开(公告)日：2008-08-14

申请号：US11961789

申请日：2007-12-20

申请人： Raviv WEBER ,  Amiad Dvir ,  Eli Elmoalem ,  Alex Goldstein ,  Igor Elkanovich ,  David Avishai

发明人： Raviv WEBER ,  Amiad Dvir ,  Eli Elmoalem ,  Alex Goldstein ,  Igor Elkanovich ,  David Avishai

IPC分类号： H04B10/08

CPC分类号： H04B10/0793 ,  H04B10/07953 ,  H04B10/27

摘要： Apparatus and method to measure the quality of burst signals and to perform optical line diagnostics in and optical passive optical network (PON). Statistical information about phase noise (jitter), signal distortion, clock distortions, and any other effects present in burst signals is generated. The statistics are based oil phase and bit-length distortions, direction and length of the effect as detected by a phase error detector integrated in a burst mode clock and data recovery (BCDR) circuit. The invention can be further adapted to perform optical line diagnostics to detect the root cause performance degradation and failures in the PON, thereby providing an optical layer supervision tool for monitoring the PON. The statistical information can be used to estimate the quality of service (QoS) per customer connected to the PON. In addition, the generated statistic information can be used to calibrate transmission parameters of optical network unit (ONU) transmitters.

摘要翻译： 测量突发信号质量并在光无源光网络（PON）中进行光线诊断的装置和方法。 产生关于相位噪声（抖动），信号失真，时钟失真以及突发信号中存在的任何其他影响的统计信息。 统计数据是基于油相和位长度失真，由集成在突发模式时钟和数据恢复（BCDR）电路中的相位误差检测器检测到的效应的方向和长度）。 本发明可以进一步适用于执行光线路诊断，以检测PON的根本原因性能下降和故障，从而提供用于监视PON的光层监督工具。 统计信息可用于估计每个连接到PON的每个客户的服务质量（QoS）。 此外，生成的统计信息可用于校准光网络单元（ONU）发射机的传输参数。

公开(公告)号：US08873960B2

公开(公告)日：2014-10-28

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： H04J14/00 ,  H04J3/16 ,  H04B10/077 ,  H04J3/14 ,  H04Q11/00 ,  H04J3/06

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：US20100166419A1

公开(公告)日：2010-07-01

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： H04B10/08 ,  H04B10/24

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执行保护的方法。 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：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：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：US09209897B2

公开(公告)日：2015-12-08

申请号：US13331255

申请日：2011-12-20

申请人： Assaf Amitai ,  David Avishai ,  Eli Elmoalem

发明人： Assaf Amitai ,  David Avishai ,  Eli Elmoalem

IPC分类号： H04B10/079 ,  H04B10/50 ,  H04B10/272 ,  H04L1/00 ,  H04L1/20

CPC分类号： H04B10/07953 ,  H04B10/272 ,  H04B10/5055 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/20 ,  H04L2001/0093

摘要： A method for an adaptive forward error correction (FEC) in a passive optical network. The method comprises selecting an initial downstream FEC code to be applied on downstream data transmitted from an optical line terminal (OLT) to a plurality of optical network units (ONUs) of the PON; communicating the selected downstream FEC code to the plurality of ONUs; receiving at least one downstream bit error ratio (BER) value from at least one ONU of the plurality of ONUs, wherein the downstream BER value is measured respective to downstream data received at the at least one ONU; changing the selected downstream FEC code to a new downstream FEC code based on a plurality of downstream BER values measured by the at least one ONU; and communicating the new downstream FEC code to the plurality of ONUs.

摘要翻译： 一种无源光网络中自适应前向纠错（FEC）的方法。 该方法包括选择要应用于从光线路终端（OLT）发送到PON的多个光网络单元（ONU）的下行数据的初始下游FEC码; 将所选择的下游FEC码传送到所述多个ONU; 从所述多个ONU中的至少一个ONU接收至少一个下行误码率（BER）值，其中所述下行BER值被相应地测量在所述至少一个ONU处接收的下行数据; 基于由所述至少一个ONU测量的多个下游BER值，将所选择的下游FEC码改变为新的下行FEC码; 以及将所述新的下行FEC码传送到所述多个ONU。

公开(公告)号：US08948594B2

公开(公告)日：2015-02-03

申请号：US12616553

申请日：2009-11-11

申请人： Eliezer Weitz ,  Gil Levy ,  David Avishai ,  Eli Elmoalem ,  Moti Kurnick ,  Gal Sitton

发明人： Eliezer Weitz ,  Gil Levy ,  David Avishai ,  Eli Elmoalem ,  Moti Kurnick ,  Gal Sitton

IPC分类号： H04J14/08 ,  H04B10/272 ,  H04L12/861 ,  H04Q11/00

CPC分类号： H04L49/9094 ,  H04L49/90 ,  H04L49/9073 ,  H04Q11/0067 ,  H04Q11/0071

摘要： A method for processing data flows of a plurality of passive optical network (PON) operating modes, the method is performed by an optical network unit (ONU). The method comprises processing upstream data flows of said plurality of PON operating modes; and processing downstream data flows of the plurality of PON operating modes. The plurality of PON operating modes include at least a Gigabit PON (GPON) mode, a broadband PON (BPON) mode, and an Ethernet PON (EPON).

摘要翻译： 一种用于处理多个无源光网络（PON）操作模式的数据流的方法，该方法由光网络单元（ONU）执行。 该方法包括处理所述多个PON操作模式的上游数据流; 以及处理多个PON操作模式的下游数据流。 多个PON操作模式至少包括千兆PON（GPON）模式，宽带PON（BPON）模式和以太网PON（EPON）。

公开(公告)号：US20130156420A1

公开(公告)日：2013-06-20

申请号：US13331255

申请日：2011-12-20

申请人： Assaf Amitai ,  David Avishai ,  Eli Elmoalem

发明人： Assaf Amitai ,  David Avishai ,  Eli Elmoalem

IPC分类号： H04B10/08

CPC分类号： H04B10/07953 ,  H04B10/272 ,  H04B10/5055 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/20 ,  H04L2001/0093

摘要： A method for an adaptive forward error correction (FEC) in a passive optical network. The method comprises selecting an initial downstream FEC code to be applied on downstream data transmitted from an optical line terminal (OLT) to a plurality of optical network units (ONUs) of the PON; communicating the selected downstream FEC code to the plurality of ONUs; receiving at least one downstream bit error ratio (BER) value from at least one ONU of the plurality of ONUs, wherein the downstream BER value is measured respective to downstream data received at the at least one ONU; changing the selected downstream FEC code to a new downstream FEC code based on a plurality of downstream BER values measured by the at least one ONU; and communicating the new downstream FEC code to the plurality of ONUs.

摘要翻译： 一种无源光网络中自适应前向纠错（FEC）的方法。 该方法包括选择要应用于从光线路终端（OLT）发送到PON的多个光网络单元（ONU）的下行数据的初始下游FEC码; 将所选择的下游FEC码传送到所述多个ONU; 从所述多个ONU中的至少一个ONU接收至少一个下行误码率（BER）值，其中所述下行BER值被相应地测量在所述至少一个ONU处接收的下行数据; 基于由所述至少一个ONU测量的多个下游BER值，将所选择的下游FEC码改变为新的下行FEC码; 以及将所述新的下行FEC码传送到所述多个ONU。

公开(公告)号：US20100067908A1

公开(公告)日：2010-03-18

申请号：US12616553

申请日：2009-11-11

申请人： Eliezer Weitz ,  Gil Levy ,  David Avishai ,  Eli Elmoalem ,  Moti Kurnick ,  Gal Sitton

发明人： Eliezer Weitz ,  Gil Levy ,  David Avishai ,  Eli Elmoalem ,  Moti Kurnick ,  Gal Sitton

IPC分类号： H04B10/20

CPC分类号： H04L49/9094 ,  H04L49/90 ,  H04L49/9073 ,  H04Q11/0067 ,  H04Q11/0071

摘要： A method for processing data flows of a plurality of passive optical network (PON) operating modes, the method is performed by an optical network unit (ONU). The method comprises processing upstream data flows of said plurality of PON operating modes; and processing downstream data flows of the plurality of PON operating modes. The plurality of PON operating modes include at least a Gigabit PON (GPON) mode, a broadband PON (BPON) mode, and an Ethernet PON (EPON).

摘要翻译： 一种用于处理多个无源光网络（PON）操作模式的数据流的方法，该方法由光网络单元（ONU）执行。 该方法包括处理所述多个PON操作模式的上游数据流; 以及处理多个PON操作模式的下游数据流。 多个PON操作模式至少包括千兆PON（GPON）模式，宽带PON（BPON）模式和以太网PON（EPON）。