| 一种基于模糊逻辑的Hop-by-Hop实时流传输控制机制研究与设计 |
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| 引用本文： | 毕政,朱仁琪,张世永.一种基于模糊逻辑的Hop-by-Hop实时流传输控制机制研究与设计[J].计算机应用与软件,2007,24(9):130-133. |
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| 作者姓名： | 毕政 朱仁琪 张世永 |
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| 作者单位： | 复旦大学计算机与信息技术系 上海200433 |
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| 摘 要： | 差分服务被证明是Internet网中引入服务质量保证(QoS)有效的解决方案.分析了已有的一些流控制方式,在差分服务的框架下提出一种基于逐跳技术和模糊逻辑来保证实时流传输需求和提高网络效率的机制,重点阐述了其行为逻辑和模糊判别机制.该机制通过模糊逻辑对路由器当前的情况进行判别,利用逐跳过程调整输入速率.采用NS2对该机制进行了模拟实现和评估,结果表明相比较于传统的端到端控制方法在带宽利用、延迟控制方面有明显提高.
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| 关 键 词： | 实时流 逐跳方式 模糊逻辑 差分服务 QoS 模糊逻辑 实时流传输 传输控制 机制研究 设计 CONTROL MECHANISM FLOW TRANSFER DESIGN 延迟控制 带宽利用 控制方法 端到端 比较 结果 评估 模拟实现 输入速率 过程调整 判别机制 情况 |
| 修稿时间： | 2005-08-28 |
RESEARCH AND DESIGN OF A FUZZY-LOGIC-BASED HOP-BY-HOP REAL-TIME FLOW TRANSFER CONTROL MECHANISM |
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| Bi Zheng,Zhu Renqi,Zhang Shiyong.RESEARCH AND DESIGN OF A FUZZY-LOGIC-BASED HOP-BY-HOP REAL-TIME FLOW TRANSFER CONTROL MECHANISM[J].Computer Applications and Software,2007,24(9):130-133. |
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| Authors: | Bi Zheng Zhu Renqi Zhang Shiyong |
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| Affiliation: | Department of Computer Information and Technology, Fudan University, Shanghai 200433, China |
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| Abstract: | Differentiated Service(DiffServ)model has been proposed as a cost-effective solution to provide the QoS guarantee on Internet.Some existing flow control mechanisms are analyzed,and a novel approach hop-by-hop fuzzy control algorithm is proposed to guarantee the real-time traffic quality demand and raise the utilization of the network.The behavior logic and the rule matrix of fuzzy control are mainly described.The control strategy uses fuzzy logic to generate the feedback message based on the status of the router and changes the real-time flow's priority hop-by-hop from the clients up to the routers till the flow rate is adjusted at an appreciable level.Simulations in NS2 show that this mechnism has the advantage of less response delay than the end-to-end flow control algorithm,and it can achieve high bandwidth utilization,good scalability and efficiency. |
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| Keywords: | Real-time flow Hop-by-hop Fuzzy logic DiffServ QoS |
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