全光网络中动态业务下的阻塞性能分析

通过对自适应路由和动态备选路由算法的性能分析,研究了波长选择和波长交换这两种类型的全光网络在动态业务下的阻塞性能,并提出了将动态波长分配与自适应路由选择相结合的算法.数值结果表明:1)相比波长交换网络而言,多纤波长选择网络是更为经济且切实可行的选择;2)动态备选路由算法可以获得与自适应路由算法相似的性能,并且文中所提出的算法能够更好的提高网络的阻塞性能.分析表明:不同算法的性能与网络拓扑的连接度以及备选路由的数目密切相关.

Blocking Performance of All-optical Networks under Dynamic Traffic

The blocking performance of two types of all optical networks: wavelength selective (WS) and wavelength interchangeable (WI) networks, is studied, and the efficiency of adaptive routing algorithms and dynamic alternate routing algorithms is investigated. Dynamic wavelength assignment combined with adaptive route selection algorithm is presented and analyzed. Numerical results show that multifiber WS networks may provide a viable and economical alternative to WI networks, and dynamic alternate routing algorithm is also a good substitute to adaptive routing algorithm. The results also show that the efficiency of different dynamic routing algorithms is closely related with different topology connectivity and the number of alternate routes.