WDM光网络中的RWA分析

智能光网络被认为是下一代高速广域骨干网的最具竞争力的候选方案，代表了下一代光网络的发展方向。路由选择和波长分配（RWA）是智能光网络中的一个关键技术，它是指网络某对节点间有光路建立请求时，如何寻找从源节点到目的节点的路由并在路由上分配波长。优化光通道的选路和波长分配（RWA）是网络设计的核心问题，其主要任务是寻找一条合适的光路并为之合理地分配波长，使有限的资源充分发挥作用，以提供尽可能大的通信容量。

The Study of RWA in WDM Optical Networks

The intelligent optical network is considered as the most competitive candidate for next generation high - speed backbone network and represents the development direction of next generation optical network. RWA is a key technology in the intelligent optical network, which aims to find the path from original node to objective node and to assign wavelength on this path when request is established by lightpath between a pair nodes of a network. The core question for network design is to optimize optical channel path and wavelength assignment, and its main task is to find a proper lightpath and to reasonably assign wavelength for it so that the limited resources can be sufficiently utilized to provide communication capacity as large as possible.