WDM网络中基于优先级的多任务波长路由分配算法  

Priority-based routing and wavelength assignment algorithm of multi-objective in WDM network

作　　者：田相轩 杨君刚[1] 车雅良[1] 孙文正[2] 刘故菁 

机构地区：[1]西安通信学院信息传输系,陕西西安710106 [2]长安大学电子与控制工程学院,陕西西安710064

出　　处：《通信学报》2014年第3期174-182,共9页Journal on Communications

基　　金：陕西省自然科学基金资助项目(20011JM8033)~~

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.

关 键 词：多任务 优先级 路由波长分配 

分 类 号：TN913.7[电子电信—通信与信息系统]