%0 Journal Article
%T Adaptive Deficit IEEE 802. 11 PCF Polling Scheme Based on NS-2<br>基于NS-2的自适应差额IEEE 802.11 PCF轮询机制
%A LIAO Yong
%A YANG Shi-zhong
%A XU Chang-biao
%A <br>廖勇
%A 杨士中
%A 徐昌彪
%J 计算机科学
%D 2009
%I 
%X A adaptive deficit polling scheme was put forward which aimed to guarantee the QoS(Quality of Service) of Round Robin polling scheme under the condition of inefficient WI_AN IEEE 802. 11 PCF (Point Coordination Function) mechanism. The core idea of this scheme was described as well as the processing of adjustment mechanism, and it was simulated on the platform of network simulator NS-2 by revising PCF source code. I}hc results indicated that adaptive deficit IEEE 802. 11 PCF polling scheme is prior to Round Robin scheme with its better performance of QoS(Quality of Service) which includes end-to-end delay, system throughput, packet delay, etc.
%K WALN
%K PCF
%K Adapive deficit polling scheme
%K NS-2
%K QoS<br>无线局域网
%K 点协调功能
%K 自适应差额轮询
%K 网络模拟器
%K 服务质量
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=64A12D73428C8B8DBFB978D04DFEB3C1&aid=1EFA5C2A6FC05AC792F096B8BA1055F1&yid=DE12191FBD62783C&vid=933658645952ED9F&iid=708DD6B15D2464E8&sid=933658645952ED9F&eid=7C3A4C1EE6A45749&journal_id=1002-137X&journal_name=计算机科学&referenced_num=0&reference_num=9