WDM光网络中一种基于SRLG限制的动态共享保护算法研究  

Dynamic Shared Path Protection Algorithm Based on SRLG Constraint in WDM Optical Network

作　　者：胡刚毅[1] 毛期俭[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：《光电技术应用》2009年第2期30-32,共3页Electro-Optic Technology Application

基　　金：国家"863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：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.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 Link Weight Con-figuration,K-DLWC)算法,该算法的关键在于为链路定义了2个动态权重.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 in WDM optical networks, in which the work path and the protection path should be disjointed with SRLG. A new dynamic shared path pro- tection algorithm based on SRLG constraint is proposed, which meets the K pairs services called K-Dynamic Link Weight Configuration （K-DLWC） algorithm. The key function of this algorithm is to make the definitions of two dynamic weights of a link. The algorithm can be used to synthetically cope with some important problems such as SRLG constraints and local optimization in calculating the work path and the protection path.

关 键 词：SRLG 共享通路保护 K-DLWC 局部最优化 

分 类 号：TN915.63[电子电信—通信与信息系统]