基于WDM传输网的动态路由算法

波分复用技术(WDM)作为一种公认的最佳光纤扩容技术已被广泛应用在国际和国内长途骨干网上。路由算法与波长分配(RWA)是WDM网中的重要技术之一，评价RWA算法的一个重要标准是网络阻塞率。采用合适的路由算法可以大大降低网络的阻塞率。该文采用一种结合了再生节点选择的动态RWA算法来解决WDM网中的波长路由问题，并通过光纤通道拓扑的优化算法来进一步优化。通过建模仿真，研究了NSFNET网络优化前后阻塞率的变化，仿真的结果证明采用该优化算法可以降低网络的阻塞率。

The dynamic Algorithm Router for WDM Optical Network

Wavelength Division Multiple as the best technology of extending capability has been accepted to use in the long-distance backbone network.Route algorithm and Wavelength assignment(RWA) is an important technology of WDM network,and the network blocking probability is an important index of judgment to the RWA algorithm.Using suitable router wavelength assignment algorithm can reduce network blocking probability drastically.In this paper,a dynamic router wavelength assignment(RWA) algorithm for WDM optical network and regeneration node selection algorithm are introduced to solve the router wavelength assignment(RWA) problem. After simulateing experiment to NSFNET,the result of the modeling simulateions shows that the blocking probability can be reduced by the ways of using fiber-tunnel topology optimization algorithm and the network performance can be improved .