OBS网络中基于优先级与突发包分割的光缓存方法研究  

Study on the Priority and Burst Segmentation Based Optical Buffering for OBS Networks

作　　者：侯睿[1] 余俊乐[1] 

机构地区：[1]中南民族大学计算机科学学院,武汉430074

出　　处：《中南民族大学学报（自然科学版）》2012年第3期93-96,共4页Journal of South-Central University for Nationalities：Natural Science Edition

基　　金：湖北省自然科学基金资助项目(2011CDB412);武汉市青年科技"晨光计划"资助项目(201150431076)

摘　　要：为了提高OBS网络的QoS,降低数据包的丢失率,研究了现有的基于优先级与突发包分割的OBS光缓存方法,提出了一种改进的基于优先级与突发包分割的光缓存方法.该方法综合考虑了其他空闲信道和FDL,并引入了空闲信道剩余时间对FDL延迟时间的判断,能够更加有效地判断数据包的丢失与否,从而确保数据包的低丢失率,保证OBS的QoS,提高整个网络的性能.In order to improve the QoS of OBS networks and reduce the burst loss rate, in this paper, we study the optical buffering schemes based on priority and burst segmentation in OBS networks, and propose an improved priority and burst segmentation based optical buffering scheme. In the proposed scheme, other idle channels and FDLs are considered, and the remaining time of idle channel is used for the judgement of the FDL delay time, which is effective for the judgement of the burst dropping or not. So it ensures the low packet loss rate, guarantees the QoS of OBS and improves overall network performance.

关 键 词：优先级 分割 光缓存 延迟 丢失率 

分 类 号：TN915[电子电信—通信与信息系统]