公开(公告)号：US07082229B2

公开(公告)日：2006-07-25

申请号：US10469809

申请日：2002-02-28

申请人： Andrea Galtarossa ,  Giuseppe Lorenzetto ,  Luca Palmieri ,  Marco Santagiustina ,  Raoul Fiorone ,  Andrea Corti

发明人： Andrea Galtarossa ,  Giuseppe Lorenzetto ,  Luca Palmieri ,  Marco Santagiustina ,  Raoul Fiorone ,  Andrea Corti

IPC分类号： G02B6/00

CPC分类号： H04B10/2569

摘要： An apparatus for compensation or emulation of polarization mode dispersion (PMD) effects occurring in an optical signal traveling over an optical fiber based link comprises controllable birefringence sections and devices for polarization conversion. Each section comprises birefringence optical members or parts thereof, and each section is followed or preceded by one of the controllable devices for polarization conversion. The birefringence sections are at least three in number, and at least one of these has a propagation delay different from that of the other sections. The apparatus comprises a detection device for PMD output and control of the controllable devices for feedback adjustment.

摘要翻译： 用于补偿或仿真在基于光纤的链路上行进的光信号中发生的偏振模色散（PMD）效应的装置包括可控双折射部分和用于偏振转换的装置。 每个部分包括双折射光学部件或其部分，并且每个部分之后或之前是用于偏振转换的可控制器件之一。 双折射部分数量至少为三个，并且这些中的至少一个具有与其它部分不同的传播延迟。 该装置包括用于PMD输出的检测装置和用于反馈调节的可控装置的控制。

公开(公告)号：US07013085B2

公开(公告)日：2006-03-14

申请号：US10469807

申请日：2002-03-04

申请人： Andrea Galtarossa ,  Raoul Fiorone ,  Luca Palmieri ,  Andrea Corti

发明人： Andrea Galtarossa ,  Raoul Fiorone ,  Luca Palmieri ,  Andrea Corti

IPC分类号： H04B10/18

CPC分类号： H04B10/2569

摘要： A method of detecting polarization mode dispersion (PMD) indicative parameters of an optical fiber link comprising at least one transmission channel in which is transmitted a first wideband optical signal with a bandwidth divided into sub-bands. For each sub-band is produced a second reference optical signal with which to find a third optical signal by superposition. For each of the third signals are calculated first parameters considered indicative of the PMD thereof, and with the first parameters of all the sub-bands are calculated second parameters considered indicative of the PMD of the first wideband signal. The method can be used as part of a PMD compensation method for a transmission system employing the parameters calculated for feedback piloting of a PMD compensator. A detection apparatus comprises a generator for generation of the second reference optical signals, an optical mixer for producing superimposition of the first and second signals, one or more photodetectors for finding the electrical beat signal or the first and second signals, a calculation device for calculating the first parameters, and a processor for processing all the first parameters to find therefrom the second parameters which will then be furthered processed. The detection apparatus can be part of a compensation apparatus comprising the compensator and a calculation stage for calculating the compensation and piloting the compensator. The entirety can be part of an optical fiber communication system.

摘要翻译： 一种检测包括至少一个传输信道的光纤链路的偏振模色散（PMD）指示参数的方法，其中传输具有被划分为子带的带宽的第一宽带光信号。 对于每个子带产生第二参考光信号，通过该第二参考光信号通过叠加来找到第三光信号。 对于每个第三信号是计算的第一参数被考虑指示其PMD，并且所有子带的第一参数被计算出被认为表示第一宽带信号的PMD的第二参数。 该方法可以用作采用为PMD补偿器的反馈引导计算的参数的传动系统的PMD补偿方法的一部分。 检测装置包括用于产生第二参考光信号的发生器，用于产生第一和第二信号的叠加的光学混合器，用于找到电差拍信号或第一和第二信号的一个或多个光电检测器，用于计算 第一参数，以及用于处理所有第一参数以从中发现第二参数的处理器，然后第二参数将被进一步处理。 检测装置可以是包括补偿器的补偿装置的一部分，以及用于计算补偿和引导补偿器的计算阶段。 整体可以是光纤通信系统的一部分。

公开(公告)号：US09203732B2

公开(公告)日：2015-12-01

申请号：US13496597

申请日：2009-10-01

申请人： Raoul Fiorone ,  Andrea Corti ,  Riccardo Martinotti

发明人： Raoul Fiorone ,  Andrea Corti ,  Riccardo Martinotti

IPC分类号： H04L12/26 ,  H04L12/701 ,  H04L12/707 ,  H04L12/703 ,  H04L12/723

CPC分类号： H04L45/00 ,  H04L43/0811 ,  H04L45/22 ,  H04L45/28 ,  H04L45/50

摘要： A connection-oriented network (5) has a plurality of connections terminated at a first node (N6). A recovery group (A) is configured at the first node (N6) comprising at least two of the plurality of connections (LSP1-6, LSP2-6, LSP3-6, LSP4-6). Fault detection is performed over each of the connections in the recovery group (A) and the node determines if at least one recovery group fault condition is met, based on the results of the fault detections performed over the connections in the recovery-group (A). When the at least one recovery group fault condition is met, the node causes traffic on the plurality of connections in the recovery group (A) to be transferred to backup paths. When the at least one recovery group fault condition is not met, and a fault has been detected on a connection in the recovery group (A), the node causes traffic to be transferred from that connection to a backup path.

摘要翻译： 面向连接的网络（5）具有终止于第一节点（N6）的多个连接。 在包括多个连接（LSP1-6，LSP2-6，LSP3-6，LSP4-6）中的至少两个的第一节点（N6）处配置恢复组（A）。 基于在恢复组（A）中的连接执行的故障检测的结果，在恢复组（A）中的每个连接上执行故障检测，并且节点确定是否满足至少一个恢复组故障条件 ）。 当满足至少一个恢复组故障条件时，该节点导致恢复组（A）中的多个连接上的流量被传送到备份路径。 当不满足至少一个恢复组故障条件，并且在恢复组（A）中的连接上检测到故障时，节点将使流量从该连接传输到备份路径。

公开(公告)号：US20080159311A1

公开(公告)日：2008-07-03

申请号：US11829498

申请日：2007-07-27

申请人： Ricardo Martinotti ,  Andrea Corti ,  Raoul Fiorone

发明人： Ricardo Martinotti ,  Andrea Corti ,  Raoul Fiorone

IPC分类号： H04L12/56

CPC分类号： H04L45/00 ,  H04L45/58

摘要： A method of providing data from a first network 100 to a second network wherein a first PEJ and a second PEK node are provided in the first network 100 and are each capable of supplying data to the second network, wherein: i. at any one time one of the first PEJ and second PEK nodes provides data to the second network; and ii. the first PEJ and second PEK nodes are arranged to communicate with one another such that the other of the nodes can provide data to the second network if a fault is detected, wherein the communications between the first and second node allow a fault to be detected.

摘要翻译： 一种从第一网络100向第二网络提供数据的方法，其中在第一网络100中提供第一PEJ和第二PEK节点，并且每个能够向第二网络提供数据，其中： 在任何时刻，第一PEJ和第二PEK节点中的一个向第二网络提供数据; 和ii。 第一PEJ和第二PEK节点被布置成彼此通信，使得如果检测到故障，则另一个节点可以向第二网络提供数据，其中第一和第二节点之间的通信允许检测到故障。

公开(公告)号：US09391874B2

公开(公告)日：2016-07-12

申请号：US12992269

申请日：2008-07-08

申请人： Andrea Corti ,  Raoul Fiorone ,  Riccardo Martinotti

发明人： Andrea Corti ,  Raoul Fiorone ,  Riccardo Martinotti

IPC分类号： H04L12/707 ,  H04L12/751 ,  H04L12/703 ,  H04L12/753

CPC分类号： H04L45/22 ,  H04L45/02 ,  H04L45/28 ,  H04L45/48

摘要： Method of re-routing traffic in a communications network (1) in the event of a fault (3) on a path across the network, the method comprising, determining whether a first node (4), located between the fault and a network ingress node (6), is capable of switching traffic to an alternative path which avoids the fault, and if the first node is determined to be not so capable, then determining whether a second node (8), located upstream of the first node, is capable of switching traffic to an alternative path which avoids the fault.

摘要翻译： 在通过网络的路径上发生故障（3）的情况下在通信网络（1）中重新路由业务的方法，所述方法包括：确定位于故障之间的第一节点（4）和网络入口 节点（6）能够将流量切换到避免故障的替代路径，并且如果确定第一节点不太可行，则确定位于第一节点上游的第二节点（8）是否为 能够将流量切换到避免故障的替代路径。

公开(公告)号：US20120287818A1

公开(公告)日：2012-11-15

申请号：US13502065

申请日：2009-10-20

申请人： Andrea Corti ,  Raoul Fiorone ,  Riccardo Martinotti

发明人： Andrea Corti ,  Raoul Fiorone ,  Riccardo Martinotti

IPC分类号： H04L12/28

CPC分类号： H04L45/16 ,  H04L45/04 ,  H04L45/50 ,  H04L45/68

摘要： A multipoint-to-multipoint service is provided between a set of edge nodes of a communications network. The network comprises at least two sub-networks and an intermediate node at a boundary between sub-networks. For each pair of edge nodes comprising an edge node in a first of the sub-networks and an edge node in a second of the sub-networks, a multi-segment pseudowire connection is configured between the pair of edge nodes. The pseudowire connection passing via at least one intermediate node. At the intermediate node forwarding data is configured which specifies a forwarding relationship between pseudowire segments corresponding to the multi-segment pseudowire connections. A topology of Label Switched Paths carry the multi-segment pseudowires. Edge nodes within a sub-network can be connected with a mesh topology or a hub-and-spoke topology.

摘要翻译： 在通信网络的一组边缘节点之间提供多点对多点服务。 该网络包括至少两个子网络和在子网络之间的边界处的中间节点。 对于包括第一子网中的边缘节点和第二子网中的边缘节点的每对边缘节点，在所述一对边缘节点之间配置多段伪线连接。 通过至少一个中间节点的伪线连接。 在中间节点处，配置转发数据，其指定与多段伪线连接相对应的伪线段之间的转发关系。 标签交换路径的拓扑携带多段伪线。 子网络中的边缘节点可以与网状拓扑或中心辐射拓扑结合。

公开(公告)号：US08787150B2

公开(公告)日：2014-07-22

申请号：US12443708

申请日：2006-10-09

申请人： Raoul Fiorone ,  Riccardo Martinotti ,  Andrea Corti

发明人： Raoul Fiorone ,  Riccardo Martinotti ,  Andrea Corti

IPC分类号： G01R31/08 ,  G06F11/00 ,  G08C15/00 ,  H04J1/16 ,  H04J3/14 ,  H04L1/00 ,  H04L12/26 ,  G06F15/173

CPC分类号： H04B1/0458 ,  H04B1/18 ,  H04L12/4633 ,  H04L41/06 ,  H04L43/0811 ,  H04L45/00 ,  H04L45/22 ,  H04L45/28 ,  H04L45/50 ,  H04L47/70

摘要： A connection oriented communications network has a plurality of nodes including a plurality of edge nodes. The network is arranged to define a primary tunnel connecting a primary one of the edge nodes to another edge node and a secondary tunnel connecting a secondary one of the edge nodes to another edge node. The network is arranged to enable switching of traffic from the primary tunnel to the secondary tunnel in the event of detection of a failure in the primary tunnel.

摘要翻译： 面向连接的通信网络具有包括多个边缘节点的多个节点。 网络被配置为定义将主要边缘节点连接到另一边缘节点的主隧道，以及将边缘节点中的辅助边缘节点连接到另一个边缘节点的辅助隧道。 网络被安排为在检测到主隧道故障的情况下，能够从主隧道到二级隧道的流量切换。

公开(公告)号：US20100002578A1

公开(公告)日：2010-01-07

申请号：US12443708

申请日：2006-10-09

申请人： Raoul Fiorone ,  Riccardo Martinotti ,  Andrea Corti

发明人： Raoul Fiorone ,  Riccardo Martinotti ,  Andrea Corti

IPC分类号： G06F11/00

CPC分类号： H04B1/0458 ,  H04B1/18 ,  H04L12/4633 ,  H04L41/06 ,  H04L43/0811 ,  H04L45/00 ,  H04L45/22 ,  H04L45/28 ,  H04L45/50 ,  H04L47/70

摘要： A connection oriented communications network 10 comprises a plurality of nodes including a plurality of edge nodes 12, 14, 16, 18. The network is arranged to define a primary tunnel connecting a primary one 12, 14 of the edge nodes to another edge node 14, 12 and a secondary tunnel connecting a secondary one 16, 18 of the edge nodes to another edge node 12, 14, 16, 18. The network is arranged to enable switching of traffic from the primary tunnel to the secondary tunnel in the event of detection of a failure in the primary tunnel.

摘要翻译： 面向连接的通信网络10包括包括多个边缘节点12,14,16,18的多个节点。网络被配置为定义连接边缘节点的主节点12,14与另一边缘节点14的主隧道 ，12和将第二个16,18的边缘节点连接到另一个边缘节点12,16,18,18的辅助隧道。网络被配置为在事件中能够从主隧道到次要隧道的业务交换 检测主隧道故障。

公开(公告)号：US20090010154A1

公开(公告)日：2009-01-08

申请号：US11965828

申请日：2007-12-28

申请人： Riccardo Martinotti ,  Andrea Corti ,  Raoul Fiorone

发明人： Riccardo Martinotti ,  Andrea Corti ,  Raoul Fiorone

IPC分类号： H04L12/24

CPC分类号： H04L45/24 ,  H04L12/1877 ,  H04L45/02 ,  H04L45/28 ,  H04Q11/0062 ,  H04Q2011/0081 ,  H04Q2011/0092

摘要： A protection scheme for a metro optical network involves programming ingress nodes and egress nodes with a primary multicast label switched path (LSP) and a back-up LSP to provide one-to-one protection. The primary and back-up LSPs are configured prior to the occurrence of a network fault to allow the network to transmit multicast communication when the fault occurs. Particularly, multicast communications are sent on the primary LSP during normal operation. However, when a network fault occurs, the nodes also send a duplicate multicast communication over the back-up LSP. Configuring the primary and back-up LSPs prior to the fault occurring avoids the need for signalling to establish a working LSP after a fault occurs.

摘要翻译： 用于城域光网络的保护方案涉及使用主要组播标签交换路径（LSP）和备用LSP对入口节点和出口节点进行编程，以提供一对一保护。 在发生网络故障之前配置主备份LSP和备份LSP，以允许网络在故障发生时传输组播通信。 特别地，在正常操作期间，在主LSP上发送组播通信。 但是，当发生网络故障时，节点也通过备份LSP发送重复的组播通信。 在发生故障之前配置主备份和备份LSP避免了在发生故障后建立LSP的信令。

公开(公告)号：US07929545B2

公开(公告)日：2011-04-19

申请号：US12066980

申请日：2006-08-24

申请人： Riccardo Martinotti ,  Andrea Corti ,  Raoul Fiorone

发明人： Riccardo Martinotti ,  Andrea Corti ,  Raoul Fiorone

IPC分类号： H04L12/28 ,  H04L12/66

CPC分类号： H04L12/462 ,  H04L12/4625 ,  H04L45/02

摘要： Network interconnection apparatus comprising a platform with interface ports for network interconnection and comprising in turn a first series and a second series of interface port cards and an interconnection unit for commanded interconnection at least between the cards of the first and second series and between cards of the first series. The cards of the first series have their own associated MAC address tables for addressing traffic between ports through the interconnection unit. Each entry of the table has an age field defining in time the age of the entry. The content of the age field is periodically verified and if it reaches a preset maximum figure the entry is updated on the basis of the content of the age field by a corresponding entry in the table of another card of the first series and associated therewith by the information in the entry to be updated. If the content of the age field of the corresponding entry is also a maximum figure, both the entries can be deleted.

摘要翻译： 网络互连设备包括具有用于网络互连的接口端口的平台，并且还包括第一系列和第二系列接口端口卡和用于至少在第一和第二串联的卡之间以及在第一和第二系列之间的指令互连的互连单元 第一系列 第一系列的卡具有它们自己的相关MAC地址表，用于通过互连单元寻址端口之间的通信。 表的每个条目都有一个时间字段，用于定义入口年龄的时间。 定期验证年龄字段的内容，如果达到预设的最大数字，则根据年龄段的内容，通过第一系列的另一个卡的表中的相应条目更新条目，并通过 要更新的条目中的信息。 如果相应条目的age字段的内容也是最大值，则可以删除这两个条目。