一种高效的多粒度光交换结构及其波带疏导算法  

Efficient multi-granularity optical switching architecture and its waveband traffic grooming algorithm

作　　者：杨帆[1] 徐展琦[1] 邱智亮[1] 吴承超[1] 

机构地区：[1]西安电子科技大学综合业务网理论及关键技术国家重点实验室,陕西西安710071

出　　处：《西安电子科技大学学报》2011年第1期34-41,共8页Journal of Xidian University

基　　金：陕西省自然科学基金资助项目(DF0101080118);国家863计划资助项目(2009AA01ZZ254);中央高校基本科研业务费专项资助项目(K50510010025);高等学校创新引智计划资助项目(B08038)

摘　　要：多粒度光交换可以减少密集型光波复用系统中波长交换平面的端口数量,但是传统的多粒度光交换结构中波带交换平面与波长交换平面之间存在着紧密的耦合关系,使得多粒度光交换的结构比较复杂.为此,提出了一种新的多粒度光交换结构.在新的结构中,波长交换平面与波带交换平面完全独立,从而可以有效地简化多粒度光交换的结构,减少波长交换平面的端口数量.为了提高新结构中波带利用率,提出了与新结构相适应的业务疏导算法.仿真结果表明,这种算法可以有效地减少业务阻塞.The multi-granularity OXC can reduce the number of switching ports of the wavelength switching plane of the ordinary OXC in the DWDM network. But there is a tight coupling between the waveband switching plane and the wavelength switching plane in ordinary multi-granularity 0XC. So the switching architecture of the ordinary multi-granularity 0XC is complex. A new muhi-granularity OXC is proposed. In this new architecture, the wavelength switching plane and waveband switching plane are independent. Therefore the switching architecture can be simplified and the number of switching ports of the wavelength switching plane can be reduced effectively. In order to increase the utilization of the waveband, a traffic grooming algorithm for this new architecture is proposed. Simulation results show that the traffic grooming algorithm can effectively decease the blocking possibility.

关 键 词：多粒度光交换 波带交换 业务疏导算法 

分 类 号：TN915[电子电信—通信与信息系统]