动态业务条件下 多粒度全光网性能分析与研究  

Analysis of Multi-granularity All-Optical Networks under Dynamic Traffic Conditions

作　　者：谢懿[1] 李培源[1] 吕薇[1] 顾畹仪[1] 

机构地区：[1]北京邮电大学光通信中心,北京100876

出　　处：《现代有线传输》2005年第3期71-74,共4页

基　　金：国家自然科学基金(No.60372006 60302026)国家"863"项目基金资助。

摘　　要：多粒度交换技术利用波带级路由以及光纤级路由,可有效降低光交叉连接器的复杂度。但多粒度交换增加了光网络的逻辑层次结构,使得网络中的路由与资源分配问题更为复杂,多粒度全光网中的多层联合路由机制是影响网络性能的关键。本文对动态业务下多粒度全光网中的资源分配策略进行了深入研究,比较了采用不同节点交换比例时网络的阻塞性能,分析了不同业务量时多粒度交叉连接节点的最佳波带粒度,并结合经济性对多粒度全光网的性能进行了综合分析。Multi-granularity switch technologies decrease the complexity of optical cross connects by employing waveband routing and fiber routing techniques. Compared with the traditional wavelength-routed all-optical networks, the routing and resource assignment problem in multi-granularity networks is more complex because of the appearance of waveband tunnel routing and fiber tunnel routing problems. This paper studies the routing and resource assignment problem for multi-granular all-optical networks. The performance of multi-granular all-optical networks are compared with different node switching ratios, Moreover, the optimal waveband granularity of multi-granularity optical cross connect (MG-OXC) are analysed under different traffic loads and also the performance of multi-granular all-optical networks has been analysed based on economic factors.

关 键 词：多粒度交换 光网络 资源分配策略 网络阻塞 

分 类 号：TN929.1[电子电信—通信与信息系统]