WDM网络中基于优先级的多任务波长路由分配算法

摘要

提出了一种在WDM网络中基于优先级的多任务波长路由分配算法。算法设计旨在提高光网络资源的利用率、降低网络请求阻塞率。分析了任务请求的路由类型以及负载容量对请求优先级划分的影响方式，给出了网络请求优先级划分策略，结合网络的实时状态提出了一种基于优先级的多任务波长路由分配算法。仿真结果表明，该算法相比现有算法降低了网络请求阻塞率，提高了资源利用率。%An effective algorithm aiming at the multi-objective routing and wavelength assignment through priority in dynamic WDM optical network was proposed. The objective of the design is to maximize the number of accepted com-munication requests subjected to a limited number of wavelength channels. The relation between path type was adopted and the traffic volume was used to determine the priority of the connection requests, and the network state was incorpo-rated into the routing decisions and wavelength assignment. The simulation results conclusively demonstrate that the proposed algorithm can greatly improve the blocking performance and utilization of the optical network resource.