OBS网络中冲突解决方法研究  

The Research on Contention Resolution of OBS Network

作　　者：王波云[1] 管爱红[1] 

机构地区：[1]河南工业大学信息科学与工程学院,河南郑州450001

出　　处：《电子质量》2010年第3期1-3,11,共4页Electronics Quality

基　　金：河南省教育厅自然科学研究计划项目(2010A510002)

摘　　要：在OBS网络中,当两个或多个突发包要求在同一时刻,同一输出端口的同一波长上预留资源时,就会产生突发数据包的资源竞争。如何解决资源竞争问题是OBS技术能否最终走向实际应用的关键技术之一。文章首先介绍OBS的基本原理、网络结构、OBS网络的资源预约机制、边缘路由器的封装机制和资源调度机制,接着研究解决OBS网络中突发数据包之间争夺链路资源问题的竞争解决机制,随后详细的给出四种竞争解决方案:光缓存、波长转换、偏射路由和突发分段丢弃,并分析了它们的性能。在此基础上,文章最后提出了各种资源竞争解决方案相结合的联合解决机制的思想。In the OBS network, when two or more burst packets request to set aside resources at the same time, on the same wavelength of the same output port, they will produce the contention of Burst Data Packet. Contention Resolution in Optical Burst Switching Network is a key technology to OBS commercial application. This paper introduces the basic principles of OBS,OBS network structure, resource reservation mechanism of OBS network, edge router assembly mechanism end resource scheduling mechanism firstly,then researches the contention solution strategy for solving the contention problem among bursts in an OBS network. After that four kinds of contention solution methods are given in detail, which include Optical Buffer, Wavelength Conversion, Deflection Routing and Burst Sub Discarded. And we analyze their performance. On this basis, the combined schemes which combine a variety of contention solution methods have been proposed in this paper at last.

关 键 词：光突发交换 突发数据包 突发控制包 突发竞争 联合解决机制 

分 类 号：TN929.1[电子电信—通信与信息系统]