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US08855483B2 Restoration scheme for an optical network and method of using such a scheme 有权
光网络的恢复方案和使用这种方案的方法

Restoration scheme for an optical network and method of using such a scheme
Abstract:
A method of restoration for an optical network, the network comprising a plurality of nodes (40, 50) interconnected with each other by optical links (130), a subset of the nodes (40) each comprising a regenerator, the method comprising: storing 160) a quality of transmission parameter and a regenerator availability at each of the plurality of nodes (40, 50); notifying (170) a branch node (110) in response to detecting a failure (140) within a link (130) forming part of the path between a source node (20) and a destination node (30), wherein the branch node (110) is the neighbouring upstream node (40, 50) upstream of the link failure (140), the branch node (110) having a regenerator; the branch node (110) computing (190) a restoration segment (100) to a merge node (120) having a regenerator which is a neighbouring downstream node which is downstream of the link failure (140), the restoration path (100) being based on the quality of transmission parameter and regenerator availability information; restoring (180) the path between the source node (20) and the destination node (30) using the restoration segment (100).
Abstract(Chinese):

一种用于光网络的恢复方法，所述网络包括通过光链路（130）彼此互连的多个节点（40,50），每个节点（40）的子集包括再生器，所述方法包括：存储 160）多个节点（40,50）中的每个节点的传输参数的质量和再生器可用性; 响应于检测到形成源节点（20）和目的地节点（30）之间的路径的一部分的链路（130）内的故障（140），通知（170）分支节点（110），其中分支节点 110）是链路故障（140）上游的相邻上游节点（40,50），分支节点（110）具有再生器; 所述分支节点（110）向具有作为在所述链路故障（140）的下游的相邻下游节点的再生器的合并节点（120）计算（190）恢复段（100），所述恢复路径（100） 基于传输参数和再生器可用性信息的质量; 使用恢复段（100）恢复（180）源节点（20）和目的地节点（30）之间的路径。

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