光突发交换中的路由技术  

Technology of OBS Routing

作　　者：仇英辉[1] 纪越峰[1] 徐大雄[1] 

机构地区：[1]北京邮电大学,北京100876

出　　处：《电信科学》2004年第1期21-24,共4页Telecommunications Science

基　　金：国家"863"计划项目(No.2003AA122560);教育部科学技术研究重大项目(No.0215 )资助

摘　　要：光突发交换是面向下一代因特网的光交换模式,是光电路交换和光分组交换的有效折衷方案,避免了各自的缺点。它使用的带宽粒度介于光电路交换和光分组交换之间,比光电路交换灵活,带宽利用率高,比光分组交换易于实现,是很有发展前途的光交换技术。路由技术在光突发交换中起重要作用,在很大程度上影响着光突发交换网络的性能。本文首先介绍了光突发交换技术的原理,然后分析了光突发交换技术的现状及存在的问题,最后探讨了光突发交换中的路由技术及其发展。Optical burst switching technology is a promising switching technology. It is a tradeoff of optical circuit switching and optical packet switching,and at the same time it avoids each of its shortcomings. Its wavelength granularity is between optical circuit switching(OCS) and optical packet switching(OPS). It is more flexible and has higher bandwidth utilization than OCS, and it is more feasible than OPS. It is a promising optical switching technology. Routing is one of the critical technologies of OBS, and will significantly affect the performance of the OBS network. This paper first introduces the principles of optical burst switching and then presents the state of OBS and the problems of OBS and finally discusses the routing technology of OBS and its evolution.

关 键 词：光突发交换 路由技术 带宽粒度 OBS 光交换矩阵 RLD RFD 

分 类 号：TN929.1[电子电信—通信与信息系统]