Optimization technique for configuring IEEE 802.11b access point parameters to improve VoIP performance

The performance of wireless LANs is greatly affected by path loss, RF interference and other sources of signal attenuation in addition to network congestion. The primary factors involved in effective real-time communication, namely delay and loss, must be within certain controlled limits in such a scenario. In this paper, we analyze the various factors driving IEEE 802.11b access points through extensive simulations and thereafter develop an optimization technique to configure the parameters of the Access Point. We simulate our test bed scenario and apply the developed algorithm. Finally, we implement the configured parameters in our testbed to provide optimum Voice over IP (VoIP) performance. Simulation and measured results have been included.