计算机科学 ›› 2017, Vol. 44 ›› Issue (3): 110-113.doi: 10.11896/j.issn.1002-137X.2017.03.024

• 网络与通信 • 上一篇    下一篇

基于IEEE802.11n的长距离无线链路性能分析

黄慧芳,李宁,王发鹏,马文峰   

  1. 中国人民解放军理工大学通信工程学院 南京210007,中国人民解放军理工大学通信工程学院 南京210007,中国人民解放军理工大学通信工程学院 南京210007,中国人民解放军理工大学通信工程学院 南京210007
  • 出版日期:2018-11-13 发布日期:2018-11-13
  • 基金资助:
    本文受2014年国家基金面上项目:异构无线网络环境下的M2M通信理论与方法研究(61371123),2014年国家自然科学基金重大研究计划(培育项目):动态空间信息网络的传输容量与关键技术(91438115),2012年江苏省青年基金项目:机会网络编码理论方法研究(BK2012055)资助

Performance Analysis of Long-distance IEEE802.11n Wireless Link

HUANG Hui-fang, LI Ning, WANG Fa-peng and MA Wen-feng   

  • Online:2018-11-13 Published:2018-11-13

摘要: IEEE802.11n-2009在传统802.11协议上添加了帧聚合和块回复功能,实现了MAC层增强,显著提高了网络吞吐量,使其更加适用于长距离无线网络。通过长距离(45km)无线链路信道利用率的理论计算和网络仿真,论证了节点采用帧聚合与块回复功能时的信道利用率明显优于不采用的情况。仿真结果进一步表明,速率越高、聚合帧越大在长距离传输时的吞吐量越高,且距离越远时帧聚合的优势越明显。

关键词: IEEE802.11n,帧聚合,块回复,信道利用率

Abstract: IEEE802.11n-2009,adding the functions of frame aggregation and block ACK,realizing the MAC layer enhancement and increasing network throughput dramatically,provides better performance in long-distance wireless networks.We demonstrated that the node using frame aggregation and block ACK is observably higher than without them by the calculation and simulation of channel utilization.The simulation results also show that the faster transfer speed and the bigger aggregated frame achieve higher throughput,and this superiority increases as the distance gets further.

Key words: IEEE802.11n,Frame aggregation,Block acknowledgement,Channel utilization

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