%0 Journal Article
%T IEEE 802.11 Distributed Coordination Function:Enhancement and Analysis<br>IEEE 802.11 Distributed Coordination Function: Enhancement and Analysis
%A WU HaiTao LIN Yu CHENG ShiDuan PENG Yong and LONG KePing National Key Lab of Switching Technology
%A Telecommunication Networks Beijing University of Posts
%A Telecommunications
%A Beijing
%A PR China
%A <br>邬海涛
%A 林宇
%A 程时端
%A 彭泳
%A 隆克平
%J 计算机科学技术学报
%D 2003
%I 
%X IEEE 802.11 Medium Access Control (MAC) is proposed to support asynchronous and time bounded delivery of radio packets. Distributed Coordination Function (DCF), which uses Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) and binary slotted exponential backoff, is the basis of the 802.11 MAC. This paper proposes a throughput enhancement for DCF by adjusting the Contention Window (CW) setting scheme. Moreover, an analytical model based on Markov chain is introduced to compute the enhanced throughput. The accuracy of the model and the enhancement of the proposed scheme are verified by elaborate simulations.
%K IEEE 802
%K 11
%K CSMA/CA
%K DCF<br>IEEE802.11
%K MAC
%K DCF
%K 分布式调协函数
%K CSMA／CA
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=F57FEF5FAEE544283F43708D560ABF1B&aid=148B9870EE07FF75E9F783BDFF46E79F&yid=D43C4A19B2EE3C0A&vid=13553B2D12F347E8&iid=94C357A881DFC066&sid=2B25C5E62F83A049&eid=2B25C5E62F83A049&journal_id=1000-9000&journal_name=计算机科学技术学报&referenced_num=0&reference_num=12