Dynamically controlling retransmission mechanism for analysing QoS parameters of IEEE 802.11 networks

Abstract

Wireless medium being error prone, the task of handling retransmissions is very important and it is assigned to the MAC subtype of IEEE 802.11. In this paper, we study the effect of changing the retransmission mechanism on QoS parameters and propose a mechanism which would dynamically adjust the retry limits (which controls the retransmission policy) based upon network state (feedback force effect) and applications (driving force effect). We start by explaining the brief theory behind retransmission mechanism followed by some basic analysis which provides the motivation for the need to dynamically control the retransmission mechanism. © 2011 Springer-Verlag Berlin Heidelberg.