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一种基于802.11 DCF Basic Access机制的移动自组网动态速率控制模型 被引量：1

A Data-rate Control Model Based on 802.11 DCF Basic Access Mechanisms in Mobile Ad hoc Networks
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摘要 802.11移动自组网由于其固有的动态拓扑、分布式协作等特点,路由协议普遍采用多播方式以提高无线链接的传输效率,由此带来的拥塞使得移动自组网中多播拥塞控制至关重要。针对移动自组网中节点固有的随机特性,基于802.11 DCF协议,该文提出一种精确描述节点数据产生、排队、发送动态过程的拟生灭模型,并通过矩阵几何方法对其进行稳态分析,得出节点速率阈值方程组,并用OPNET进行了仿真实验,仿真结果与理论值拟合较好,为移动自组网中的拥塞控制提供了一个量化的指标。 Mobile Ad hoc NETworks （MANET） has inherent characteristic of dynamic topology, distributed collaboration, thus on-demand routing protocols employs multicast mechanism to improve transmission efficiency. However multicast is apt to cause network congestion which makes congestion condition in MANET critical. On the basis of the stochastic characteristics of MANET node and 802.11 DCF basic access mechanisms, the paper proposes an infinite state quasi-birth-and-death model to accurately describe the packet generating, queuing, sending process of individual node. Stationary analysis is performed with matrix-geometric method and the set of equations for packet arrival rate threshold is obtained. The effectiveness of this model is demonstrated by the simulations in OPNET. The contribution of this paper is to provide a mathematical tool for congestion control research.
作者 夏文洁 李千目 孙晋厚 刘凤玉
机构地区 南京理工大学计算机学院 二炮装备研究院
出处 《电子与信息学报》 EI CSCD 北大核心 2013年第11期2650-2656,共7页 Journal of Electronics & Information Technology
基金 国家自然科学基金(60903027 6127419) 中国博士后基金(2012M521089) 江苏博士后资助计划(1201044C) 江苏省自然科学基金(BK2011370)资助课题
关键词 移动自组网 802 11DCF 拟生灭模型 拥塞控制 数据速率控制 Mobile Ad hoc NETworks （MANET） 802.11 DCF Quasi-birth-and-death Congestion control Data-rate control
分类号 TP393 [自动化与计算机技术—计算机应用技术]
  • 相关文献

参考文献19

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二级参考文献22

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共引文献27

同被引文献15

  • 1Lalwani P,Silakari S,Shukla P K.Optimized and executive survey on mobile Ad hoc network[C]//Proc of IEEE International Symposium on Cloud and Services Computing.[S.l.]:IEEE Press,2012:31-35.
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电子与信息学报
2013年 第11期

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