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| 基于网络演算的流量整形模型 |
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张信明1,2, 陈国良1,2, 顾钧1,2
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1.中国科学技术大学计算机科学与技术系,安徽,合肥,230027;2.国家高性能计算中心,安徽合肥230027
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| 摘要: |
| 流量整形对QoS(quality of service)控制有着重要的影响.总结并优化了最近几年发展起来的能够深刻透视计算机网络业务流控制问题的网络演算技术,采用网络演算技术建立了包括贪婪无损失整形器、无缓冲区整形器及固定缓冲区长度整形器的一般性模型,获得了3种整形器的输入/输出特性以及整形器可提高QoS控制机制的效率等结果. |
| 关键词: 流量 整形 服务质量 网络演算 Internet |
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| 基金项目:国家重点基础研究发展规划973资助项目(G1998030403);中国科学院高水平大学建设资助项目(KYZ2706) |
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| A Traffic Shaping Framework Based on Network Calculus |
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ZHANG Xin-ming,CHEN Guo-liang,GU Jun
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| Abstract: |
| Traffic shaping has an enormous impact on the provision of QoS (quality of service) guarantees. In this paper, the fundamentals of network calculus, a set of recent developments which provide a deep insight into flow problems encountered in computer networks are summarized and refined. By using network calculus, a general framework of traffic shaping is developed which includes greedy lossless shapers, traffic clippers and shapers with finite buffer to obtain, the input-output characterization of three traffic shapers, and how a traffic shaper can be used at all network elements to improve the efficiency of QoS mechanisms. |
| Key words: traffic shaping quality of service network calculus Internet |
