波分复用光传送网中备用选路下的选路和波长分配算法  

An Alternate Routing Algorithm for WDM Optical Transport Network

作　　者：徐世中[1] 李乐民[1] 王晟[1] 

机构地区：[1]电子科技大学宽带光纤传输与通信系统技术国家重点实验室,四川成都610054

出　　处：《电子学报》2002年第4期488-491,共4页Acta Electronica Sinica

基　　金：国家自然科学基金重大项目"WDM全光网基础研究"(No .69990 540 )

摘　　要：本文研究了动态业务下 ,波分复用光传送网的选路和波长分配问题 ,提出了一种基于备用选路的选路和波长分配算法 .与文献中已有的利用全网信息的备用选路的算法相比 ,该算法能更加精确地描述建立光路对全网的影响 ,选择对网络状态影响最小的路由 波长对来建立光路 ,促进网络资源的有效利用 .计算机仿真表明 ,不论在规则的格型环网还是非规则的网络中 ,在阻塞率性能方面 ,在大多数情况下该算法优于文献中已有的备用选路算法 ;In this paper,an alternate routing algorithm is proposed for the problem of routing and assignment of wavelength in Wavelength Division Multiplexing (WDM) optical transport network.It can more accurately model the state of the whole network after the establishment of new calls than other alternate algorithms proposed before.The route wavelength pair which has the least influence on the state of the whole network is chosen to accommodate the coming call.The algorithm performs better than other alternate routing algorithms in most cases we studied.Fairness is improved significantly too.

关 键 词：波分复用 光传送网 选路 波长分配算法 

分 类 号：TN929.1[电子电信—通信与信息系统]