Load sensing energy efficiency routing method based on spectrum reservation in elastic optical network

Abstract

The invention relates to a load sensing energy efficiency routing method based on spectrum reservation in an elastic optical network, and belongs to the technical field of optical fiber communication.According to the invention, spectrum use of a node adjacent link on a shortest optical path is subjected to statistics according to a service request, and according to a node spectrum use degree of acurrent optical path and an average spectrum use degree of all the nodes of the whole network, a node load state formula is designed. By the node load state formula and a candidate optical path spectrum idle degree, a load of the shortest optical path is determined. When the shortest optical path has a light load, an available spectrum sensing optical path bandwidth reservation grooming energy-saving routing method is designed, and according to a size of an available spectrum of the optical path, optical path and spectrum resources are dynamically reserved for a service, so that a service grooming success probability is improved and energy consumption of the optical path is reduced; and when the shortest optical path has a heavy load, on the basis of an optical path cost formula of optical path hops and a spectrum continuity, a load balanced minimum cost optical path routing method is designed, so that a service successful transmission probability is improved and a bandwidth blockingrate of a service is reduced.

Description

technical field [0001] The invention belongs to the technical field of optical fiber communication, and relates to a load-aware energy-efficient routing method based on spectrum reservation in an elastic optical network. Background technique [0002] The rapid growth of emerging network services such as video on demand, video conferencing, cloud computing, and big data has caused explosive growth in IP traffic, and the bandwidth resources of communication networks are facing unprecedented challenges. Due to the advantages of high capacity, strong anti-interference ability and light weight, optical fiber has become the main transmission medium of communication network. Traditional optical transmission technology services are transmitted from the source node to the destination node, and the intermediate node needs to perform optical-electrical-optical conversion on the uplink and downlink. In addition to being limited by the bottleneck of the electrical layer bandwidth, with t...

AI Technical Summary

Problems solved by technology

However, the traditional energy-saving routing method, as the network load increases, the available spectrum resources decrease, and the bandwidth blocking rate performance is poor, which cannot meet the needs of users.

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