全光WDM网络中的动态波长路由算法

为了更好地解决路由与波长分配（RWA）问题，提出了一种基于当前路由的路由算法．研究了无波长转换机制下的波长路由型全光网，该算法利用分层图模型，在有限的波长数中，动态地调节选路策略，以求在波长连续性限制下有效地利用带宽资源．仿真结果表明，与常用的First-Fit（FF）算法相比，该算法显著地降低了网络呼叫阻塞率，同时它也能改变公平性．

Dynamic routing and wavelength assignment in all-optical WDM network

In order to resolve the problem of Routing and Wavelength Assignment(RWA) more efficiently,an algorithm in terms of current routing is proposed.This paper studies the wavelength-routing all-optical networks without wavelength converters.The algorithm employs the layered-graph model,adjusts strategy of selecting routes dynamically from the limited number of wavelengths,attempts to efficiently utilize resource of bandwidth under the wavelength-continuity constraint.Simulation results show that blocking probability can be significantly reduced compared with First-Fit(FF) algorithm,and fairness is improved significantly,too.