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1. 清华大学电子工程系,北京 100084
2. 清华大学信息技术研究院,北京 100084
[ "赵辰(1989-),男,清华大学电子工程系硕士生,主要研究方向为同时同频全双工技术,无线局域网中的接收算法、编码技术等。" ]
[ "李云洲(1974-),男,博士,清华大学信息技术研究院无线中心研究员,主要研究方向为无线移动通信中的组网与传输技术,包括空时信号处理、信道估计、多用户检测、无线局域网系统设计等。" ]
[ "许希斌(1968-),男,博士,清华大学信息技术研究院无线中心常务副主任,主要研究方向为分布式无线通信系统、软件无线电技术、宽带无线通信新理论及技术等。" ]
[ "王京(1958-),男,博士,清华大学信息技术研究院教授,清华信息科学与技术国家实验室副主任,主要研究方向为无线与移动通信中的信息理论与信号处理技术,包括第五代移动通信的网络架构、传输技术、分布式无线通信系统、软件无线电、空时信号处理技术、宽带无线接入技术、微小卫星的星上信号处理技术等。" ]
网络出版日期:2016-06,
纸质出版日期:2016-06-20
移动端阅览
赵辰, 李云洲, 许希斌, 等. 全双工WLAN的吞吐量性能分析[J]. 电信科学, 2016,32(6):83-92.
Chen ZHAO, Yunzhou LI, Xibin XU, et al. Analysis of the throughput in full-duplex WLAN[J]. Telecommunications science, 2016, 32(6): 83-92.
赵辰, 李云洲, 许希斌, 等. 全双工WLAN的吞吐量性能分析[J]. 电信科学, 2016,32(6):83-92. DOI: 10.11959/j.issn.1000-0801.2016172.
Chen ZHAO, Yunzhou LI, Xibin XU, et al. Analysis of the throughput in full-duplex WLAN[J]. Telecommunications science, 2016, 32(6): 83-92. DOI: 10.11959/j.issn.1000-0801.2016172.
WLAN是当前移动互联网接入的重要方式之一,然而随着移动互联网用户数量的增加,WLAN接入性能迅速下降,提高在高密度部署条件下的性能是WLAN技术发展的重要方向。对IEEE 802.11协议中的基本媒体接入方法的分布式协调功能(DCF)进行了分析,建立模型分析基础架构WLAN 的性能,指出在基础架构WLAN中下行吞吐率在站点数量较多情况下的瓶颈及产生瓶颈的原因。采用近年来有突破性进展的全双工技术,设计新的MAC层协议并对其性能进行分析,通过对基础架构中的AP提供全双工支持以及对DCF协议进行简单修改,使基础架构无线局域网性能可以突破瓶颈,在网络负载较高的情况下保证一定的下行吞吐率,并使总吞吐量提高60%以上。
WLAN is one of the important ways of accessing mobile internet.However,the performance of WLAN declines rapidly as the number of users increases.Improving the performance of WLAN with high density deployment is an important research direction of WLAN technology.Distributed coordination function(DCF)which was the basic media access method of IEEE 802.11 in infrastructure-based networks was modeled and the bottleneck of downlink throughput was pointed out.Taking advantage of full-duplex technology where there was a breakthrough in recent years,a new MAC protocol was designed and analyzed.By providing the AP full-duplex transmitting ability and simple modifications to traditional DCF protocol,the new protocol made the downlink throughput breaking through the bottleneck in infrastructure-based WLAN and increased the total throughput by more than 60%.
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GAO Y , SUN X , DAI L . IEEE 802.11e EDCA networks:modeling,differentiation and optimization [J ] . IEEE Transactions on Wireless Communications , 2014 , 13 ( 7 ): 3863 - 3879 .
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ONG E H , JAMIL Y K , MAHATA K . A simple model for non-homogeneous and non-saturated IEEE 802.11 DCF infrastructure BSS [C ] // IEEE International Conference on Communication Systems,November 17-19,2010,Singapor . New Jersey : IEEE Press , 2010 : 506 - 511 .
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