一种快速动态分布式光链路建立方法  

A Novel Fast Distributed Dynamic Lightpath Setup Algorithm

作　　者：李蔚[1] 何军[1] 李源[2] 刘德明[1] 杨春勇[1] 黄德修[1] 

机构地区：[1]华中科技大学光电子工程系,湖北武汉430074 [2]华中师范大学计算机科学系,湖北武汉430070

出　　处：《光电子．激光》2004年第11期1329-1333,共5页Journal of Optoelectronics·Laser

基　　金：武汉市重大科技攻关资助项目(2002100513004)

摘　　要：提出一种改进的波长分配算法,用于波长路由光网络中快速动态分布式光链路的建立。该算法采用提前释放和超时释放两种波长和链路释放机制,减少了网络拥塞,更适合波长路由网络的实际运行规则。通过在美国自然科学基金网(NSF)上的仿真计算,与以前的研究结果相比,该算法可以减少网络的阻塞率8%,同时缩短了光链路建立的时间。In this paper,a novel revised fast distributed dynamic wavelength assignment algorithm for optical path setup has been presented.Through adopting two new optical link and wavelength release mechanism,this algorithm can reduced the blocking probability significantly and is more suitable to the practical application in wavelength routing networks.The effectiveness of the algorithm is verified through the simulation of NSF Net model.After compared with the results in previous work,it shows that the revised algorithm can realize 8% reduction in network blocking probability and has made a reat improvement on reducing optical path setup time.

关 键 词：光链路 波长路由网络 合波 阻塞率 波长分配算法 光网络 网络拥塞 超时 建立方法 快速 

分 类 号：TN929[电子电信—通信与信息系统] TN943.6[电子电信—信息与通信工程]