【摘要】 讨论了 WDM(wavelength- division multiplexing,WDM)光传送网的快速恢复问题 ,分析了保障 Qo S的意义和在恢复路由搜索中的关键技术。针对 WDM光传送网的特点 ,提出了多业务传输条件下恢复路由优化的设计思路 ,同时采用基于遗传算法的快速搜索启发式算法解决了多约束多目标优化的问题。通过对美国和意大利两个国家级干线光网实例的计算以及与 Dijkstra算法的比较 ,验证了该算法能够在链路节点故障情况下为受损业务求取多个最优恢复路由的优势更多还原

【Abstract】 This paper analyzes the quality of service guarantee and other key characteristics of network restoration route searching for fast restoration in a WDM (wavelength division multiplexing) optical transport network. A heuristic algorithm based on genetic algorithm is presented to solve the fast searching problem of optimal restoration. Numerical tests of the algorithm on two practical national scale optical networks proved the validatity and the accuracy of the algorithm.更多还原