Stochastic models of IEEE 802.11e wireless net works with multimedia applications

Kumar, Anurag (2006) Stochastic models of IEEE 802.11e wireless net works with multimedia applications. In: 8th International Conference on Distributed Computing and Networking,, Dec 27-30, 2006, Guwahati, India, pp. 175-192.

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Abstract

We provide a survey of some of our recent results ([9], [13], [4], [6], [7]) on the analytical performance modeling of IEEE 802.11 wireless local area networks (WLANs). We first present extensions of the decoupling approach of Bianchi ([1]) to the saturation analysis of IEEE 802.11e networks with multiple traffic classes. We have found that even when analysing WLANs with unsaturated nodes the following state dependent service model works well: when a certain set of nodes is nonempty, their channel attempt behaviour is obtained from the corresponding fixed point analysis of the saturated system. We will present our experiences in using this approximation to model multimedia traffic over an IEEE 802.11e network using the enhanced DCF channel access (EDCA) mechanism. We have found that we can model TCP controlled file transfers, VoIP packet telephony, and streaming video in the IEEE802.11e setting by this simple approximation.

Item Type:	Conference Paper
Series.:	LECTURE NOTES IN COMPUTER SCIENCE
Publisher:	Springer
Additional Information:	Copyright of this article belongs to Springer.
Keywords:	performance analysis of wireless LANs, QoS in WLANs, multimedia traffic performance over WLANs.
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited:	01 Sep 2010 05:35
Last Modified:	19 Sep 2010 06:12
URI:	http://eprints.iisc.ac.in/id/eprint/30508

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