Performance evaluation of a new backoff method for IEEE 802.11

Authors:
Hadi Minooei;Hassan Nojumi
Affiliations:
Department of Mathematical Sciences, Sharif University of Technology, Tehran, Iran;Department of Mathematical Sciences, Sharif University of Technology, Tehran, Iran
Venue:
Computer Communications
Year:
2007

Citing 5
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Abstract

Since DCF is the main protocol of accessing other mobile stations in ad hoc networks such as IEEE 802.11 WLANs, a self-controlling method for each station is necessary, called the backoff algorithm. An exponential backoff method has been used in WLANs and significant efforts have been made to analyze its throughput and other important properties such as delay and jitter. In this article, we propose a new backoff algorithm and model it with a discrete-time Markov chain; measuring its saturation throughput under several conditions and several set of parameters which are to be adjusted according to the network condition, with the aim of approaching maximum throughput when stations are saturated.