%0 Journal Article
%T Performance Investigation of IEEE 802.11e EDCA Based on the M/G/1/K Queue Model<br>基于M/G/1/K排队模型的IEEE802.11e EDCA性能研究
%A Bai Xiang Mao Yu-ming
%A <br>白翔
%A 毛玉明
%J 电子与信息学报
%D 2008
%I 
%X A new Markov chain model for the IEEE 802.11e EDCA is presented. The model takes into account both the idle state and differentiation based on different AIFS-value for different traffic. The signal transfer function of the generalized state transition diagram can be used to derive a probability distribution of the MAC layer service time and the performance of EDCA from a non-saturated channel to a saturated medium by using presented M/G/1/K queuing model is analyzed. A good match between the analytical model and simulation which conforms the veracity of proposed model is observed. Simulation shows that despite providing prioritized QoS, the EDCA still can not support strict QoS for real-time application. It is inevitable that there is unfairness of channel access to prioritized traffic due to EDCA.
%K Markov chain model
%K M/G/1/K queuing model
%K Non-saturation condition
%K Saturation condition<br>Markov链模型
%K M/G/1/K排队模型
%K 非饱和状态
%K 饱和状态
%K 排队模型
%K EDCA
%K 性能
%K 研究
%K IEEE
%K Investigation
%K Performance
%K Based
%K Model
%K 不公平性
%K 优先级业务
%K 业务提供
%K 同优先级
%K 接入机制
%K 验证
%K 数值分析
%K 结果
%K 实验
%K 负载
%K 非饱
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=AE5BB8FAED437FD6804F66A6D4B7A585&yid=67289AFF6305E306&vid=340AC2BF8E7AB4FD&iid=DF92D298D3FF1E6E&sid=964A3ACE3D0A47F2&eid=B0D0FAC45E96482A&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=13