公开(公告)号：US20240243970A1

公开(公告)日：2024-07-18

申请号：US18356054

申请日：2023-07-20

申请人： ECI Telecom Ltd.

发明人： Ziv SHEM-TOV ,  Efraim GELMAN ,  Inbal HECHT ,  Shirel EZRA

IPC分类号： H04L41/082 ,  H04L41/12

CPC分类号： H04L41/082 ,  H04L41/12

摘要： Systems and methods are disclosed for configuring a communication network to satisfy a set of demands. A network management system can obtain a network graph representing the communication network, connectivity relationship that indicates valid pairs of edges for each vertex in the network graph, and a structure that lacks zero divisors. The network management system can use the network graph, connectivity relationship, and structure to determine a path length for which a valid path connecting a source vertex and a terminal vertex exists. The path length can be determined using a dynamic programming approach that associates an element of the structure with the collection of paths connecting the source vertex and the terminal vertex. The network management system can then use the network graph, connectivity relationship, and structure to determine a valid path of the path length that connects the source vertex and the terminal vertex.

公开(公告)号：US11894916B2

公开(公告)日：2024-02-06

申请号：US17818212

申请日：2022-08-08

申请人： ECI Telecom Ltd.

发明人： Eyal Lichtman ,  Rafi Leiman ,  Boaz Wittenberg

IPC分类号： H04J14/02

CPC分类号： H04J14/0221 ,  H04J14/0212 ,  H04J14/0213

摘要： The disclosed systems and methods support addition of bands to a multi-band optical interface. The systems and methods can include a multi-band interface device for optical networks. The device can include a multi-band optical amplifier, a C-Band Add/Drop multiplexer, an L-Band Add/Drop multiplexer and an amplifier noise source. The multi-band optical amplifier can be connected to the C-Band Add/Drop multiplexer and connected to the L-Band Add/Drop multiplexer through the amplifier noise source. The amplifier noise source be configured to generate a combination of bulk noise and an input transmission received from the L-Band Add/Drop multiplexer. The gain of the amplifier noise source can depend on the power of the received input transmission. The power of the received input transmission can be increased over a period of time, transitioning the amplifier noise source from acting as a bulk noise source to acting an amplifier.

公开(公告)号：US20230370359A1

公开(公告)日：2023-11-16

申请号：US18175260

申请日：2023-02-27

申请人： ECI Telecom Ltd.

发明人： Ziv SHEM-TOV

IPC分类号： H04L45/02 ,  H04L45/00 ,  H04L41/0826 ,  G06F16/901

CPC分类号： H04L45/02 ,  H04L45/22 ,  H04L41/0826 ,  G06F16/9024

摘要： Systems and methods are disclosed for identifying a set of internal edges on a representation of a network that satisfy a set of demands on the network. The disclosed systems and methods perform a multi-step process of selecting the internal edges. In a first step, an initial set of internal edges can be selected using a clique graph (or in another suitable manner). In a second step, a second set of internal edges can be selected using stream graph(s) (or in another suitable manner). The second set of internal edges can be used when determining network paths that satisfy the demands. When the representation of the network has a cut of two, the disclosed systems and methods can identify a set of internal edges providing a degree of protection against link failure.

公开(公告)号：US10721315B1

公开(公告)日：2020-07-21

申请号：US16711930

申请日：2019-12-12

申请人： ECI Telecom Ltd.

发明人： Shirel Ezra ,  Efraim Gelman ,  Inbal Hecht

IPC分类号： H04L29/08 ,  H04Q11/00 ,  H04L12/707

摘要： Techniques for migrating a plurality of communications services in a data communication network are disclosed. Aspects include accessing a migration map for the plurality of communications services; identifying a communications dependency between a first service and a second service according to the migration map, the first service migrating from a first route to a second route, the second service migrating from a third route to a fourth route, and the third route at least partially overlapping with the second route; determining a migration sequence based on the communications dependency, wherein the migration sequence includes a largest subset of the plurality of communications services of which no more than M communications services are allowed to migrate from pre-migration configurations to temporary routes, before migrating to post-migration configurations; and migrating the plurality of communications services from a first plurality of configurations to a second plurality of configurations according to the migration sequence.

公开(公告)号：US09686182B2

公开(公告)日：2017-06-20

申请号：US14607349

申请日：2015-01-28

申请人： ECI TELECOM LTD.

发明人： Shell Nakash

IPC分类号： H04L12/28 ,  H04L12/703 ,  H04L12/707 ,  H04L12/723

CPC分类号： H04L45/28 ,  H04L45/22 ,  H04L45/50

摘要： A method for providing a protected fast rerouting scheme for traffic conveyed in a network comprising a working path and a first backup path for conveying the traffic in case of a node failure. The method enables conveying traffic when two simultaneous failures occur, a failure of a link and/or of a node, belonging to the working path and the other—a failure occurring at a link and/or a node belonging to the first backup path. Upon detecting occurrence of a link/node failure along the working path, traffic is diverted to the first backup path, and upon detecting a concurrent failure at the downstream link/node at the first backup path, traffic is diverted to a second backup path extending from a node belonging to the first backup path and merges with the working path at a node located downstream of the failure that occurred at the working path.

公开(公告)号：US20160269110A1

公开(公告)日：2016-09-15

申请号：US15064848

申请日：2016-03-09

申请人： ECI TELECOM LTD.

发明人： David Jimmy DAHAN ,  Amitay MELAMED

IPC分类号： H04B10/079 ,  H04B10/073

CPC分类号： H04B10/07953 ,  H04B10/0793 ,  H04B10/07951 ,  H04B10/60

摘要： A method is provided for carrying out channel performance monitoring in an optical communication system. The method comprising: receiving an optical signal; obtaining digitized samples associated with the optical signal; storing the digitized samples; carrying out an off-line processing of the stored samples. The off-line processing includes: using the digitized samples to determine information characterizing the at least one optical channel used for conveying the optical signal; using the determined information to estimate a value of at least one optical channel performance parameter characterizing the at least one optical channel; and forwarding the value of the at least one optical channel performance parameter to a network management element; and wherein the at least one optical channel performance parameter is estimated without a prior knowledge of information on a modulation format associated with the optical channel.

摘要翻译： 提供了一种用于在光通信系统中执行信道性能监视的方法。 该方法包括：接收光信号; 获取与光信号相关联的数字化样本; 存储数字化样本; 对所存储的样品进行离线处理。 离线处理包括：使用数字化样本来确定表征用于传送光信号的至少一个光信道的信息; 使用所确定的信息来估计表征所述至少一个光信道的至少一个光信道性能参数的值; 并将所述至少一个光信道性能参数的值转发给网络管理单元; 并且其中在没有关于与所述光信道相关联的调制格式的信息的先前知识的情况下估计所述至少一个光信道性能参数。

公开(公告)号：US09402275B2

公开(公告)日：2016-07-26

申请号：US13901160

申请日：2013-05-23

申请人： ECI TELECOM LTD.

发明人： Andrew Sergeev ,  Yakov Zimmerman ,  Alexander Vainshtein

IPC分类号： H04W16/18 ,  H04W84/04 ,  H04W40/20 ,  H04W92/04

CPC分类号： H04W84/045 ,  H04W40/20 ,  H04W92/045

摘要： A method is provided for interconnecting base stations of a cellular network via a transport network which comprises a plurality of network elements (NEs), wherein at least two of the plurality of NEs are collocated with respective base stations. The method comprises the steps of: establishing in the TN at least one proximity group that comprises a plurality of geographically adjacent NEs; establishing a logical grid connectivity between NEs that are members of the same proximity group to enable direct communications there-between, thereby enabling establishment of communications paths between base stations collocated with the at least two of the plurality of NEs, wherein that path extends via the at least two respective NEs communicating directly there-between.

摘要翻译： 提供了一种用于经由包括多个网元（NE）的传输网络来互连蜂窝网络的基站的方法，其中所述多个NE中的至少两个与各个基站并置。 该方法包括以下步骤：在TN中建立包括多个地理上相邻的NE的至少一个邻近组; 在作为相同邻近组的成员的NE之间建立逻辑网格连接，以实现其间的直接通信，由此能够建立与所述多个NE中的至少两个之间并置的基站之间的通信路径，其中该路径经由 至少两个相互间直接通信的NE。

公开(公告)号：US09197570B2

公开(公告)日：2015-11-24

申请号：US13869514

申请日：2013-04-24

申请人： ECI Telecom Ltd.

发明人： Shell Nakash ,  Gideon Agmon

IPC分类号： H04L12/851 ,  H04L12/801

CPC分类号： H04L47/2483 ,  H04L47/24 ,  H04L47/29

摘要： A method is provided for managing congestion of traffic in a packet switch, which comprises the steps of: providing more than two different congestion levels at the switch for handling traffic associated with at least two different priorities, one being a low priority traffic and another being a high priority traffic; for each traffic flow having a specific destination and priority, determining a current congestion level that matches a congestion control level which is selected from among the more than two congestion control levels, and associating a different set of operations for handling each respective traffic flow, depending on its priority and its current congestion level, and for each traffic flow, performing operations that match the respective associated set of operations, and wherein a rate at which these operations are performed for each respective traffic flow increases when a higher congestion level occurs at that respective traffic flow.

摘要翻译： 提供了一种用于管理分组交换机中的业务拥塞的方法，其包括以下步骤：在交换机处提供两个以上不同的拥塞级别，以处理与至少两个不同优先级相关联的业务，一个是低优先级业务，另一个 高优先级流量; 对于具有特定目的地和优先级的每个业务流，确定与从多于两个拥塞控制级别中选择的拥塞控制级别匹配的当前拥塞级别，并且关联用于处理每个相应业务流的不同操作集合，依赖 在其优先级和其当前拥塞水平以及针对每个业务流的情况下执行与相应的相关联的一组操作相匹配的操作，并且其中对于每个相应业务流执行这些操作的速率在发生较高拥塞水平时增加 各自的交通流量。

公开(公告)号：US20150215201A1

公开(公告)日：2015-07-30

申请号：US14607349

申请日：2015-01-28

申请人： ECI Telecom Ltd.

发明人： Shell NAKASH

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

CPC分类号： H04L45/28 ,  H04L45/22 ,  H04L45/50

摘要： A method for providing a protected fast rerouting scheme for traffic conveyed in a network comprising a working path and a first backup path for conveying the traffic in case of a node failure. The method enables conveying traffic when two simultaneous failures occur, a failure of a link and/or of a node, belonging to the working path and the other—a failure occurring at a link and/or a node belonging to the first backup path. Upon detecting occurrence of a link/node failure along the working path, traffic is diverted to the first backup path, and upon detecting a concurrent failure at the downstream link/node at the first backup path, traffic is diverted to a second backup path extending from a node belonging to the first backup path and merges with the working path at a node located downstream of the failure that occurred at the working path.

摘要翻译： 一种用于为在网络中传送的业务提供受保护的快速重新路由方案的方法，包括工作路径和用于在节点故障的情况下传送业务的第一备份路径。 当发生两个同时发生的故障，属于工作路径的链路和/或节点的故障，另一个故障发生在属于第一备份路径的链路和/或节点时，该方法能够传送流量。 当检测到沿着工作路径的链路/节点故障的发生时，流量被转移到第一备份路径，并且在检测到在第一备份路径处的下游链路/节点处的并发故障时，流量被转移到第二备份路径延伸 来自属于第一备份路径的节点，并且在位于在工作路径发生的故障的下游的节点处与工作路径合并。

公开(公告)号：US09025915B2

公开(公告)日：2015-05-05

申请号：US13628721

申请日：2012-09-27

申请人： ECI Telecom Ltd.

发明人： Uri Mahlab

IPC分类号： G02B6/35 ,  G02B6/14 ,  H04Q11/00

CPC分类号： G02B6/356 ,  G02B6/3508 ,  H04Q11/0005 ,  H04Q2011/0016 ,  H04Q2011/0024 ,  H04Q2011/0039

摘要： A method and module for affecting controlled switching of optical signals having different modes of propagation, wherein the module being provided with at least two multi-mode ports MMPs and a plurality of single-mode ports SMPs, the method comprises: inputting at least one multimode optical signal to an MMP of said MMPs; inputting the single mode optical signals to the SMPs; performing mode processing of one or more of the single mode and multi mode optical signals within the switching module, controllably and selectively switching different optical signals inputted to different ports of the module, preferably based on received feedback related to quality information, thereby allowing switching between single mode ports, between multi-mode ports, and between single mode and multi mode ports.

摘要翻译： 一种用于影响具有不同传播模式的光信号的受控切换的方法和模块，其中所述模块被提供有至少两个多模式端口MMP和多个单模端口SMP，所述方法包括：输入至少一个多模 所述MMP的MMP的光学信号; 将单模光信号输入到SMP; 优选地，基于接收到的与质量信息相关的反馈，可控地和选择性地切换输入到模块的不同端口的不同光信号，从而允许在开关模块内的单模和多模光信号中的一个或多个模式处理 单模端口，多模式端口之间以及单模和多模端口之间。