A method and device for establishing optical channel routing in a dense wavelength division network

Abstract

The invention provides a method and a device for establishing optical channel routing in a dense wavelength division network. The method comprises the following steps of: acquiring physical storage information and converting the acquired information into optical cross matrixes; acquiring configuration information which exists already and is related to wavelength scheduling, performing conversion to obtain optical channel scheduling information existing already, and updating resource distribution of a corresponding multiplexing and demultiplexing optical port; calculating a connection relation of an optical multiplexing section between the optical cross matrixes, and taking the optical cross matrixes as a vertex and taking an idle wave channel resource provided by the optical multiplexing section as a side to form a graph data structure; calculating wavelength routing according to the graph data structure; converting configuration elements of the wavelength routing into optical cross configuration instructions according to an instruction specification of an optical transmission device and issuing the instructions to the optical transmission device, and updating resource distribution of each multiplexing and demultiplexing optical port and each optical cross matrix. Implementation of the method and the device for establishing optical channel routing in the dense wavelength division network, provided by the invention, has the following positive effects that: conversion into the graph data structure is performedcorrectly, and routing calculation efficiency is relatively high.

Description

technical field [0001] The invention relates to the field of optical transmission, in particular to a method and device for establishing optical channel routing in a dense wavelength division network. Background technique [0002] The bandwidth consumption of the optical transmission network is getting faster and faster. Facing the pressure of market demand, telecom operators have encountered huge challenges in terms of network construction costs and maintenance costs. The most feasible way out is to The dense wavelength division transmission technology whose cost and energy consumption per bit transmission is only one-fifth of IP technology (IP technology) is selected. [0003] In a large-scale dense WDM network, the wavelength routing algorithm is very important. The transmission capacity of a DWDM single channel can reach 100Gbit / s. When a channel is interrupted, its affected range is very large. At this time, it is necessary to calculate the backup route at the fastest ...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a dense WDM system that can be correctly converted into a graph data structure and has high routing calculation efficiency in view of the defects of the prior art that cannot be converted into a graph data structure and has low routing calculation efficiency. Method and device for establishing optical channel routing in network

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