Wave channel balancing route wavelength allocation method of power backbone optical transport network

Abstract

The invention relates to a wave channel balancing route wavelength allocation method of a power backbone optical transport network. The method comprises the steps of: obtaining information of each link of the network according to a network topological structure; establishing balancing paths among nodes in the networks; calculating a wave channel utilization rate of each link in the network; according to a wave channel balancing rule, carrying out routing on transmission business; according to business service quality requirements, dividing business levels, wherein, each level of business is corresponding to a corresponding wavelength level group; when business arrives in the network, firstly calculating path from a source node to a target node for the business, selecting the corresponding wavelength group according to the priority level of the arrived business, and allocating a usable wavelength to the business according to an intra-group priority allocation rule; if no usable wavelength is available, rejecting the business; and updating the number of usable wavelengths of each link, and carrying out wave channel allocation for next business. According to the invention, the wavelength utilization rate of each link in the network is effectively balanced, congestion conditions caused by overloads of partial links are reduced, and stable and reliable operation of the network is ensured.

Description

technical field [0001] The invention relates to the field of an electric backbone optical transmission network (Optical Transport Network, OTN), in particular to a channel equalization routing wavelength allocation method for an electric backbone optical transmission network. Background technique [0002] With the transformation of the development mode of the electric power industry, electric power companies are gradually informatized and digitalized, and the demand for communication is increasing rapidly. The existing SDH / MSTP transmission network is no longer able to provide wider channels. The new large-capacity OTN for electric power communication networks above the provincial level (Optical Transport Network) system has become inevitable, and the application of the power backbone transmission network supported by OTN technology is becoming more and more extensive. The OTN network can support optical layer connection types based on unidirectional point-to-point, bidirect...

AI Technical Summary

Problems solved by technology

Therefore, how to configure appropriate routes and select optimized wavelengths for services in a network with limited resources will directly have a major impact on network transmission efficiency

With the development of the power grid, the power communication network will carry a large number of IP services, and the services carried by IP require high bandwidth. The current power communication network can no longer meet this requirement.

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