{"id":532,"date":"2007-03-11T03:22:01","date_gmt":"2007-03-11T03:22:01","guid":{"rendered":"http:\/\/network.ee.tsinghua.edu.cn\/niulab\/?p=532"},"modified":"2010-08-24T10:25:55","modified_gmt":"2010-08-24T10:25:55","slug":"delay-analysis-of-ieee-802-11e-edca-under-unsaturated-conditions","status":"publish","type":"post","link":"https:\/\/network.ee.tsinghua.edu.cn\/niulab\/?p=532","title":{"rendered":"Delay Analysis of IEEE 802.11e EDCA Under Unsaturated Conditions"},"content":{"rendered":"<p><a href=\"http:\/\/network.ee.tsinghua.edu.cn\/papers\/Jing Liu 1-WCNC.pdf\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-full wp-image-117\" title=\"pdf\" src=\"https:\/\/network.ee.tsinghua.edu.cn\/niulab\/wp-content\/uploads\/2010\/08\/pdf.gif\" alt=\"\" width=\"95\" height=\"50\" \/><\/a><br \/>\n<span class=\"paper_subtitle\">LANGUAGE<\/span><br \/>\nEnglish<br \/>\n<span class=\"paper_subtitle\">SOURCE<\/span><br \/>\nProc. of WCNC 2007<br \/>\n<span class=\"paper_subtitle\">Published Date<\/span>:2007-03-11<br \/>\n<span class=\"paper_subtitle\">ABSTRACT<\/span><br \/>\nWith the successful development of IEEE 802.11 based wireless LAN(WLAN), applications with QoS requirements are asked to be provided in WLANs. Because of their delay restrictions, realtime applications should work under unsaturated conditions. In this paper, firstly, traffic models for different kinds of applications are proposed to convert the unsaturated system into an equivalent saturated system and calculated out the queueing delay in the sender buffer; then, a new analysis model is presented to analyze the backoff delay and packet loss rate of all kinds of applications under the IEEE 802.11e Enhanced Distributed Channel Access(EDCA), this model well embodies the function of the Arbitration Inter Frame Space(AIFS) and other EDCA parameters; finally, access delay can be get from the backoff delay and queueing delay. Practical scenarios of Voice over IP(VoIP) and data combined system are simulated. Simulation results show the accuracy and efficiency of our model under unsaturated conditions.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><a href=\"http:\/\/network.ee.tsinghua.edu.cn\/papers\/Jing Liu 1-WCNC.pdf\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-117\" title=\"pdf\" src=\"https:\/\/network.ee.tsinghua.edu.cn\/niulab\/wp-content\/uploads\/2010\/08\/pdf.gif\" alt=\"\" width=\"95\" height=\"50\" \/><\/a>Jing Liu, Zhisheng Niu, <span class=\"papertitle\">Delay Analysis of IEEE 802.11e EDCA Under Unsaturated Conditions<\/span>, <span class=\"papersource\">Proc. of WCNC 2007<\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[7],"tags":[99,65,18],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/network.ee.tsinghua.edu.cn\/niulab\/index.php?rest_route=\/wp\/v2\/posts\/532"}],"collection":[{"href":"https:\/\/network.ee.tsinghua.edu.cn\/niulab\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/network.ee.tsinghua.edu.cn\/niulab\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/network.ee.tsinghua.edu.cn\/niulab\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/network.ee.tsinghua.edu.cn\/niulab\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=532"}],"version-history":[{"count":2,"href":"https:\/\/network.ee.tsinghua.edu.cn\/niulab\/index.php?rest_route=\/wp\/v2\/posts\/532\/revisions"}],"predecessor-version":[{"id":827,"href":"https:\/\/network.ee.tsinghua.edu.cn\/niulab\/index.php?rest_route=\/wp\/v2\/posts\/532\/revisions\/827"}],"wp:attachment":[{"href":"https:\/\/network.ee.tsinghua.edu.cn\/niulab\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=532"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/network.ee.tsinghua.edu.cn\/niulab\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=532"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/network.ee.tsinghua.edu.cn\/niulab\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=532"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}