电子学报2011，Vol.39Issue(7)：1668-1672,5.
OBS网络中基于优先级与参数可调的偏射路由算法
A Deflection Routing Algorithm Based on Priority and Parameter-tunable in Optical Burst Switching Networks
摘要
Abstract
In order to guarantee quality of service (QoS) of different priority bursts and solve the problem of deflection control of deflection algorithm in OBS networks, a deflection routing algorithm based on priority and parameter-tunable in OBS networks is proposed. It intercalates the definition of a tunable-parameter (deflection probability) to control the deflection of contending bursts, and searches the optimum deflection path in terms of the burst loss probability and the deflection path length. When competition occurs, low priority bursts are segmented,and the segmentation part of bursts are deflected to free links. The algorithm selects many candidate routes which the tunable-burst loss probability of the first k priority burst and overall bursts in the deflection path is the least.At last,it chooses the shortest deflection path.Simulations show that the algorithm can reduce the burst loss probability of entire networks and protect the integrity of some high priority bursts. It also can efficiently reduce the delay,and reduce the offset time deficit on QoS guarantee. So the scheme can improve the performance of OBS networks.关键词
光突发交换/偏射路由/优先级/参数可调/服务质量Key words
Optical Burst Switching (OBS)/deflection routing/priority/parameter-tunable/Quality of Service (QoS)分类
电子信息工程引用本文复制引用
管爱红,王波云,张元,傅洪亮..OBS网络中基于优先级与参数可调的偏射路由算法[J].电子学报,2011,39(7):1668-1672,5.基金项目
河南省教育厅自然科学研究计划(No.2010A510002) （No.2010A510002）
