光突发交换网络中QoS方案的研究  

Research on QoS Schemes in Optical Burst Switching Networks

作　　者：王立[1] 李建奇[1] 伍宗富[1] 

机构地区：[1]湖南文理学院电气工程系,湖南常德415000

出　　处：《通信技术》2008年第6期17-19,共3页Communications Technology

摘　　要：光突发交换是构建下一代光网络的有效交换技术,在OBS网络中如何有效地支持QoS已成为一个重要的研究课题。介绍了光突发交换网络中基于偏置时间的QoS方案和波长分组QoS方案,最后提出了一种基于波长分组技术,结合突发分片技术和Min-Sv算法的QoS的解决方案,通过建立相应的模型对其进行了仿真,仿真结果表明所提出的方案可以更好地提供区分服务,同时有效地提高了信道的利用率,降低了整体的丢失率。Optical Burst Switching （OBS） is an efficient switching technique for the next generation optical networks. How to improve QoS （Quality of Service） support in OBS networks has become a very important research topic. This paper presents the offset-time-based QoS scheme and the wavelength grouping QoS scheme. And a new QoS scheme based on wavelength grouping and in combination of burst segmentation technique and Min-Sv scheduling algorithm is proposed. In order to evaluate the effectivity of the scheme when applied to an optical burst switching networks, an analysis model is established and simulated. The results of simulation show that the scheme can provide better differentiated service, decrease the burst loss probability and improve the channel utilization.

关 键 词：光突发交换 波长分组 QOS 

分 类 号：TN929.11[电子电信—通信与信息系统]