| Contention avoidance using dual-fuzzy assembly threshold algorithm in optical burst switching networks |
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| 作者姓名： | 杨九如 王钢 贾世楼 |
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| 作者单位： | YANG Jiu-ru(Communication Research Center, Harbin Institute of Technology, Harbin 150001, China;School of Electronic Engineering, Heilongjiang University, Harbin 150080, China);WANG Gang,JIA Shi-lou(Communication Research Center, Harbin Institute of Technology, Harbin 150001, China) |
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| 基金项目： | Sponsored by the Science and Technology Project of Education Department of Heilongjiang Province (Grant No. 11521212) |
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| 摘 要： | To avoid burst contention efficiently,on the basis of feedback-based source flow-rate control(SFC) strategy,a novel fuzzy-control-based assembly algorithm,called dual-fuzzy assembly threshold(DFAT),is proposed in an optical burst switching network.In our algorithm,according to the variations of burst assembly period and the interarrival of burst control packet,the traffic states of edge-switching nodes and core-switching nodes are first obtained.Then,the assembly threshold of bursts is set dynamically in order to operate the source traffic management from the information of traffic states.The performance of DFAT algorithm on burst loss probability is evaluated,and simulation results show that,compared with conventional assembly algorithms,the proposed scheme can constrain the birth of burst contention efficiently,when being a heavy load state of network.
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| 关 键 词： | 交换网络 双阈值 模糊集 算法 用光 突发控制分组 交换节点 光突发交换 |
Contention avoidance using dual-fuzzy assembly threshold algorithm in optical burst switching networks |
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| YANG Jiu-ru,WANG Gang and JIA Shi-lou.Contention avoidance using dual-fuzzy assembly threshold algorithm in optical burst switching networks[J].Journal of Harbin Institute of Technology,2009,16(4):465-468. |
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| Authors: | YANG Jiu-ru WANG Gang and JIA Shi-lou |
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| Affiliation: | 1. Communication Research Center, Harbin Institute of Technology, Harbin 150001, China;School of Electronic Engineering, Heilongjiang University, Harbin 150080, China
2. Communication Research Center, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | To avoid burst contention efficiently, on the basis of feedback-based source flow-rate control (SFC) strategy, a novel fuzzy-control-based assembly algorithm, called dual-fuzzy assembly threshold (DFAT), is proposed in an optical burst switching network.In our algorithm, according to the variations of burst assembly period and the interarrival of burst control packet, the traffic states of edge-switching nodes and core-switching nodes are first obtained.Then, the assembly threshold of bursts is set dynamically in order to operate the source traffic management from the information of traffic states.The performance of DFAT algorithm on burst loss prob-ability is evaluated, and simulation results show that, compared with conventional assembly algorithms, the pro-posed scheme can constrain the birth of burst contention efficiently, when being a heavy load state of network. |
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| Keywords: | optical burst switching contention avoidance burst assembly dual feedback mechanism |
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