基于竞争控制的光突发交换条件偏射路由算法  

Contention Control-based Limited Deflection Routing Algorithm in OBS Networks

作　　者：王汝言[1] 吴畏[2] 阳小龙[2] 隆克平[2] 朱维乐[1] 

机构地区：[1]电子科技大学电子工程学院,四川成都610054 [2]重庆邮电学院光互联网及无线信息网络研究中心,重庆400065

出　　处：《半导体光电》2005年第2期136-138,145,共4页Semiconductor Optoelectronics

基　　金：国家自然科学基金资助项目(90304004);教育部科学技术研究资助项目(204125);重庆市科委应用基础项目(8061);重庆市教委科学技术项目(050309)

摘　　要：光突发交换(OBS)网络中,偏射路由算法是有效地解决突发竞争、提高网络性能的一种重要措施,但通过分析发现,它可能会导致偏射路由上正常(非偏射)突发的丢失率上升。提出了一种基于竞争控制的条件偏射路由算法,根据定义的偏射条件检测函数,有条件的偏射或丢弃竞争突发来保证偏射路由上正常突发的QoS。仿真表明该算法可以很好地控制偏射突发对网络偏射路由上正常流量的影响。The deflection routing protocol is an effective contention resolution in optical burst switching (OBS) network. However, it can worsen the performance of non-deflected burst on the deflection route. To improve the burst loss performance, a contention control-based limited deflection routing scheme is proposed to prevent injudicious deflection routing. By using threshold check function, the proposed scheme can improve the quality of service(QoS) performance of non-deflected burst. Simulation results show that the scheme can efficiently prevent the effect of deflected burst contending with non-deflected burst on deflection route.

关 键 词：光突发交换 竞争控制 偏射路由算法 阈值检测函数 

分 类 号：TN919.2[电子电信—通信与信息系统]