WDM光网络中一种新型的动态共享保护算法  

A novel dynamic shared path protection algorithm in WDM optical networks

作　　者：胡刚毅[1] 毛期俭[1] 王汝言[1] 颜红[1] 

机构地区：[1]重庆邮电大学光纤通信技术重点实验室,重庆400065

出　　处：《光通信研究》2009年第4期1-3,共3页Study on Optical Communications

基　　金：国家"八六三"计划资助项目(2005AA122310);重庆市科委资助项目(2005AC2089);重庆市教委资助项目(KJ070511)

摘　　要：波分复用(WDM)光网络中引入了共享风险链路组(SRLG)的概念,要求工作通路与保护通路不能处于同一个SRLG之中。文章提出了一种基于SRLG限制的动态共享通道保护算法,即满足K对业务的动态链路权重配置(K-Dynamic LinkWeight Configuration,K-DLWC)算法,该算法的关键在于使用了备选路由集合的概念。在计算工作通路和保护通路时,它能综合解决SRLG限制、局部最优等关键问题。The concept of Shared Risk Link Group （SRLG） is introduced into WDM optical networks, requiring that the work path and the protection path should not exist in one and same SRLG. This article proposes an SRLG constraint-based dynamic shared path protection algorithm that satisfies the Dynamic Link Weight Configuration （DLWC） of K pairs services, called. K- DLWC algorithm. The key to this algorithm lies in the use of the concept of routing options, which can be used to synthetically cope with such key issues as SRLG constraints and local optimization in calculating the work path and the protection path.

关 键 词：共享风险链路组 共享通路保护 K对业务的动态链路权重配置 局部最优化 

分 类 号：TN915[电子电信—通信与信息系统]