%0 Journal Article
%T RSAD: A Robust Distributed Contention-Based Adaptive Mechanism for IEEE 802.11 Wireless LANs
%A Yong Peng
%A Shi-Duan Cheng
%A Jun-Liang Chen
%A <br>YongPeng
%A Shi-DuanCheng
%A Jun-LiangChen
%J 计算机科学技术学报
%D 2005
%I 
%X Previous researches have shown that Distributed Coordination Function (DCF) access mode of IEEE 802.11 has lower performance in heavy contention environment. Based on the in-depth analysis of IEEE 802.11 DCF, NSAD (New Self-adapt DCF-based protocol) has been proposed to improve system saturation throughput in heavy contention condition. The initial contention window tuning algorithm of NSAD is proved effective in error-free environment. However, problems concerning the exchanging of initial contention window occur in error-prone environment. Based on the analysis of NSAD's performance in error-prone environment, RSAD is proposed to further enhance the performance. Simulation in a more real shadowing error-prone environment is done to compare the performance of NSAD and RSAD and results have shown that RSAD can achieve further performance improvement as expected in the error-prone environment than NSAD (i.e., better goodput and fairness index).
%K distributed coordination function (DCF)
%K wireless LAN (WLAN)
%K performance enhancement
%K robust<br>DCF
%K WLAN
%K 操作增强
%K IEEE802.11
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=F57FEF5FAEE544283F43708D560ABF1B&aid=E401D4666F2E139691B7B0E58F728E32&yid=2DD7160C83D0ACED&vid=A04140E723CB732E&iid=0B39A22176CE99FB&sid=2B25C5E62F83A049&eid=2B25C5E62F83A049&journal_id=1000-9000&journal_name=计算机科学技术学报&referenced_num=0&reference_num=10