An improved analytical model for WLANs under unsaturated traffic conditions

Author

Du Hai-qing ; Yixi, Liu ; Chang, Guo ; Guang-Jun, Wang

Author_Institution

Sch. of Inf. & Commun., Beijing Univ. of Posts & Telecommun., Beijing, China

fYear

2009

fDate

12-14 Oct. 2009

Firstpage

1

Lastpage

4

Abstract

In this paper, an improved IEEE 802.11 WLAN analytical model under unsaturated traffic conditions was proposed, which adapts existing MAC distributed coordination function (DCF) models to consider all the states. To achieve that, two special states were added, one is the idle state, which means the MAC queue is empty, and the other is D state, which means if the medium is sensed to be idle for a time interval greater than the DIFS, the station proceeds with the packet transmission. Consequently, the improved IEEE 802.11 WLAN can be used to study the average packet delay in MAC layer. Simulation results indicate that this model is more accurate.

Keywords

access protocols; queueing theory; telecommunication standards; telecommunication traffic; wireless LAN; D state; IEEE 802.11 WLAN; MAC distributed coordination function; MAC queue; idle state; packet delay; packet transmission; unsaturated traffic condition; Analytical models; Collision avoidance; Delay; Geology; Mathematical model; Media Access Protocol; Space technology; Telecommunication traffic; Traffic control; Wireless LAN; DCF; IEEE 802.11; MAC delay; analytical model; unsaturated traffic condition;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Mobile Congress 2009

Conference_Location

Shanghai

Print_ISBN

978-1-4244-5302-3

Electronic_ISBN

978-1-4244-5301-6

Type

conf

DOI

10.1109/GMC.2009.5295836

Filename

5295836