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一种新的IEEE80.11 DCF有限负载性能分析模型 被引量：1

Novel model for IEEE80.11 DCF performance analysis on unsaturated traffic
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摘要 IEEE802.11的MAC协议采用基于CSMA/CA的DCF机制,针对该协议的非饱和性能理论评估问题,为DCF机制建立一个闭合排队网络模型。基于该排队模型推导出有限负载条件下无线网络传输率与吞吐量的表达式,并通过该模型理论分析了站点数量、传输负载、数据包大小对网络性能的影响。通过实验仿真结果与模型分析数据对比,验证了该模型能够有效地分析DCF机制的非饱和传输性能。 A performance model based on closed queuing network is established to evaluate the performance of IEEE 802.11 MAC based on the Distributed Coordination Function（DCF） under the condition of unsaturated traffic,which utilizes carrier sense multiple access with collision avoidance（CSMA/CA）.The principle of operation and the applicability of the queue networks model is described.The impact of both the number of terminals,traffic load and package size on the performance are analyzed.The expression of throughput and transmission probability under unsaturated traffic load is derived by employing the queuing model.Simulation results show that the model can evaluate the performance of DCF effectively.
作者 王卫庭 肖进胜 谢红刚
机构地区 江苏省金坛市国家税务局信息中心 武汉大学电子信息学院
出处 《计算机工程与应用》 CSCD 2012年第3期99-101,132,共4页 Computer Engineering and Applications
基金 湖北省自然科学基金(No.2009cdb328) 中央高校基本科研业务费专项资金(No.6082003)
关键词 DCF机制 退避过程 排队网络 非饱和吞吐量 性能评估 Distributed Coordination Funtion（DCF） backoff process queue networks unsaturated throughput performance evaluation
分类号 TP393.01 [自动化与计算机技术—计算机应用技术]
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参考文献11

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二级参考文献12

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共引文献11

同被引文献13

  • 1IEEE 802.11 working Group.Wireless LAN medium access control(MAC)and physical layer(PHY)specifications[S]. 2007.
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  • 4Dai L, Sun X.A unified analysis of IEEE 802.11 DCF networks : stability, throughput, and delay[J].IEEE Transac- tions on Mobile Computing,2013,12(8) : 1558-1572.
  • 5Zhao Q, Tsang D H K, Sakurai T.Modeling non saturated IEEE 802.11 DCF networks utilizing an arbitrary buffer size[J].IEEE Transactions on Mobile Computing, 2011,10 (9) : 1248-1263.
  • 6Nguyen S H,Vu H L,Andrew L L H.Performance anal- ysis of IEEE 802.11 WLANs with saturated and unsatu- rated sources[J].IEEE Transactions on Vehicular Technol- ogy, 2012,61 ( 1 ) : 333-345.
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  • 8Malone D, Duffy K, Leith D.Modeling the 802.11 distributed coordination function in nonsaturated heterogeneous con- ditions[J].IEEE/ACM Transactions on Networking, 2007, 15( 1 ) : 159-172.
  • 9Zhao Q, Tsang D H K, Sakurai T.Modeling nonsaturated IEEE 802.11 DCF networks utilizing an arbitrary buffer size[J].IEEE Transactions on Mobile Computing,2011, 10(9) : 1248-1263.
  • 10Zheng Y, Lu K, Wu D, et al.Performance analysis of IEEE 802.11 DCF in imperfect channels[J].IEEE Trans- actions on Vehicular Technology,2006,55(5) : 1648-1656.

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计算机工程与应用
2012年 第3期

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