光通信网络中路由与波长分配的算法研究

Research of RWA in All- Optical Net

光通信网络作为下一代网络的主要网络之一,在整个通信网中起着至关重要的作用。目前光通信中主要是采用基于DWDM(密集波分复用)技术组成的光网络,随着波分数量的增加,DWDM网络中的路由与波长分配问题显得十分重要,需要有一种有效的算法来使有限的波长资源得到充分地利用。本文根据原有的数学分析模型,提出了一种分层图模型,并根据此模型提出了一种用来解决DWDM网络中出现的波长分配问题的一种算法,并通过计算机仿真来表明此算法提高了波长资源的利用率,降低了网络的阻塞率。

Optical communication network is the main network of NGN, and play a very important role in communication network, Recently it is mainly based on DWDM（Dense Wavelength Divide Mulplexing）technology. As the number of wavelength increasing, the assigning problem of route and wavelength become, more important in DWDM network, so it is necessary to provide a algorithm in order to improve the efficiency of using wavelength resource. According to original mathematic analytical model, we put forward a new model, and advance a algorithms based on this model, in order to solve the RWA problem in DWDM Networks, then we simulate this algorithms on computer and prove the superioritv of this algorithms.