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公开(公告)号：EP4401380A1
公开(公告)日：2024-07-17
申请号：EP24151468.6
申请日：2024-01-11
申请人： ECI Telecom Ltd.
发明人： HECHT, Inbal , GELMAN, Efraim , EZRA, Shirel , SHEM-TOV, Ziv , PORAT, Hayim
摘要： A network management system can be configured to identify routes for satisfying a set of demands on an optical communication network using layer graph(s). The layer graph edges can have edge scores that indicate a cost of the edge. The network management system can generate the layer graph(s) using a network graph that represents the optical communication network and an associated sets of available frequency slots. The network management system can iteratively identify candidate path(s) on the layer graph(s) that correspond to each of the demands and determine a cost for each candidate path using the edge scores. In each iteration, the network management system can select the lowest cost candidate path, update the layer graph(s) based on this selection, and update the candidate paths for the remaining demands as needed. The network management system can similarly generate restoration paths for each of the demands.
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公开(公告)号：EP4358480A1
公开(公告)日：2024-04-24
申请号：EP22207075.7
申请日：2022-11-11
申请人： ECI Telecom Ltd.
发明人： PORAT, Hayim , EZRA, Shirel , GELMAN, Efraim
CPC分类号： H04L41/145 , H04L41/12 , H04L45/28 , H04L45/1283 , H04L45/22 , H04L45/02 , H04L45/62
摘要： Configuration of a communication network can include obtaining a graph representing the communication network, generation of a the preplan assignment for the communication network, and configuration of the communication network according to the preplan assignment. The graph can be associated with shared risk link groups (SRLGs) and demands. Generation of the preplan assignment can include obtaining a headend assignment between each one of the demands and a headend vertex on the graph. Generation of the preplan assignment can further include obtaining a SRLG-distinguishing assignment between each headend and a corresponding reporting edge set. The reporting edge set for a headend can include sufficient edges to distinguish among SRLGs affecting the headend. Generation of the preplan assignment can further include obtaining a notification path assignment between each headend and each reporting edge in the corresponding reporting edge set for the headend.
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公开(公告)号：EP4307638A1
公开(公告)日：2024-01-17
申请号：EP23185425.8
申请日：2023-07-13
申请人： ECI Telecom Ltd.
发明人： GELMAN, Efraim , SHEM-TOV, Ziv , HECHT, Inbal , EZRA, Shirel
IPC分类号： H04L45/128 , H04L45/00
摘要： Systems and methods are disclosed for determining a more-efficient set of routes on a communications network, given an initial set of routes that satisfies a set of demands. Consistent with disclosed embodiments, the routes can be represented as network paths on a network graph that represents the communications network. In some embodiments, a set of irreducible paths can be generated from the original network paths. The communications network can then be updated to implement routes corresponding to the set of irreducible paths. In some embodiments, a bipartite graph can be generated from the original network paths and the irreducible paths. An updated set of paths can be generated by selecting ones of the original network paths or the irreducible paths. In some embodiments, auxiliary graph can be generated from the original network paths and the irreducible paths. An updated set of paths can be generated using the auxiliary graph.
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公开(公告)号：EP4239971A1
公开(公告)日：2023-09-06
申请号：EP23158905.2
申请日：2023-02-27
申请人： ECI Telecom Ltd.
发明人： SHEM-TOV, Ziv
IPC分类号： H04L45/128 , H04L45/02 , H04L45/00 , H04L41/12 , H04L41/0826 , H04L41/22 , H04L45/48 , G06F16/901
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.
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5.发明公开A method for managing E-Tree services in MPLS networks 有权MPLS-Netzwerken的Verfahren zum Verwalten von E-Tree Diensten
公开(公告)号：EP2568662A1
公开(公告)日：2013-03-13
申请号：EP12181989.0
申请日：2012-08-28
申请人： ECI Telecom Ltd.
发明人： Dukhovny, Vadim
CPC分类号： H04L41/0803 , H04L45/48 , H04L45/50
摘要： A method and device for managing E-tree services in an MPLS network having domains comprising network nodes and links, wherein the network is adapted to accommodate an E-tree structure formed by the network nodes for a specific E-tree service. The E-tree structure comprises a root point communicating with a number of leaf points, so that any network node of the E-tree structure is connected via its ports to links leading to a root point and/or a leaf point of said structure. The method comprises: marking ports of a specific node associated with links leading only to leaf points of the structure while marking differently ports of a specific node, associated with links leading to the root point; marking ports of a specific node connected to incoming or outgoing links of the same domain, and ensuring that traffic will not be returned thereby creating network loops.
摘要翻译： 一种用于在具有包括网络节点和链路的域的MPLS网络中管理E-tree服务的方法和装置，其中所述网络适于容纳由所述网络节点为特定E树服务形成的E树结构。 E树结构包括与多个叶点通信的根点，使得E树结构的任何网络节点经由其端口连接到通向所述结构的根点和/或叶点的链路。 该方法包括：标记与仅导致结构叶节点的链接相关联的特定节点的端口，同时标记与导致根点的链路相关联的特定节点的不同端口; 标记连接到同一域的入站或出站链路的特定节点的端口，并确保不会返回流量，从而创建网络环路。
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6.发明公开Low cost high bit rate transceiving technique for optical networks 审中-公开KostengünstigeSende- / Empfangstechnik mit hoher Bitratefüroptische Netzwerke
公开(公告)号：EP2369767A2
公开(公告)日：2011-09-28
申请号：EP11159113.7
申请日：2011-03-22
申请人： ECI Telecom Ltd.
发明人： Melamed, Amitay
IPC分类号： H04J14/02
CPC分类号： H04J14/02
摘要： Technique for low cost delivery of a high bit rate electric signal via an optical network, by using a group of optical channels in the network for respectively delivering there-through a number of component electric signals of the high bit rate signal, The optical channels are respectively associated with different wavelengths, and each of the optical channels comprises optical elements suitable for conducting an optical signal having bandwidth significantly narrower than bandwidth of any of the component signals. The high bit rate electric signal is then successively restored from the optical signals delivered via the optical channels.
摘要翻译： 通过使用网络中的一组光通道，通过高比特率信号的多个分量电信号分别传输高分辨率电信号经由光网络的低成本传送技术。 分别与不同的波长相关联，并且每个光通道包括适于传导具有比任何分量信号的带宽显着窄的带宽的光信号的光学元件。 高比特率电信号然后从经由光通道传送的光信号连续地恢复。
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公开(公告)号：EP1972085B1
公开(公告)日：2011-01-05
申请号：EP06809869.8
申请日：2006-11-14
申请人： ECI Telecom Ltd.
CPC分类号： H04J14/00 , H04B10/27 , H04J14/0227 , H04J14/0228 , H04J14/0283 , H04J14/0284
摘要： A network with nodes interconnected by optical fiber links carrying an optical communication channel having a single optical wavelength. In the network, at least two network nodes operate as transmitting nodes generating a first short pulse optical signal at different bit rates; at least one of the other network nodes operates as a receiving node and is designated to receive transmissions from at least one of the transmitting nodes via the optical channel in a form of a second short pulse optical signal. The receiving node is provided with a dispersion compensation module adapted to compensate dispersion created in the optical fiber along the optical channel between a specific transmitting node and the receiving node, thereby ensuring receipt, in a restored form, of data transmitted using the second optical signal and directed to the receiving node.
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公开(公告)号：EP2078392A1
公开(公告)日：2009-07-15
申请号：EP07827281.2
申请日：2007-10-28
申请人： ECI Telecom Ltd.
发明人： NAKASH, Shell
摘要： A method of finding a primary communication path in a mesh network, which would be at once a protected path having a fully guaranteed segmented node or node-link protection. The method comprises defining a required protection type and further selecting each specific path segment of the desired communication path based on initial user's requirements and topology information of the network. Each specific node path segment N for the communication path is selected upon ensuring that it can be protected in the network by a node backup path satisfying the initial user's requirements. Each specific link path segment L for the communication path is chosen if it can be protected in the network by a link backup path satisfying the initial user's requirements and if the node path segment N to which segment L leads cannot be protected by a suitable node backup path.
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公开(公告)号：EP2027676A1
公开(公告)日：2009-02-25
申请号：EP07736437.0
申请日：2007-06-10
申请人： ECI Telecom Ltd.
发明人： NAKASH, Shell
CPC分类号： H04L12/462 , H04L12/4641 , H04L45/04 , H04L45/18 , H04L45/22 , H04L45/28 , H04L45/48 , H04L45/68
摘要： Technique for interconnecting a first communication network and a second communication network, for example layer 2 Ethernet networks, which uses a fully or partially redundant dual homing configuration. The configuration includes: at least three network elements where at least two of them are peer elements belonging to the second network, and at least two traffic lines respectively associated with the peer elements and connecting the first and the second networks via the three network elements. The technique comprises establishing a bi-directional signaling between the peer elements and, based on the signaling information, deciding which traffic line should forward the traffic.
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公开(公告)号：EP2011264A1
公开(公告)日：2009-01-07
申请号：EP07713329.6
申请日：2007-03-08
申请人： ECI Telecom Ltd.
发明人： LEVY, Avi , MAHLAB, Uri
IPC分类号： H04J14/02
CPC分类号： H04J14/0227 , H04J14/021
摘要： A technique is proposed for performing add/drop operations in an OADM assembly serving an optical network and comprising an add unit and a drop unit. With respect to at least one optical channel assigned to an optical wavelength λ, the OADM assembly is capable of dropping the channel from the network via the drop unit as a first signal, and adding the channel to the network via the add unit as a second signal. According to the technique, the OADM assembly additionally comprises an authentication and control unit ACU for authenticating the at least one optical channel and controlling the OADM assembly. The ACU is authenticates the optical channel by comparing one or more components of the first signal with one or more components of the second signal serving as a reference, and based on the authentication result, makes decisions whether to allow or block the dropping and/or adding of the optical channel.
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