IEEE 802.11 goodput analysis for mixed real time and data traffic

An IEEE 802.11 analytical perfonnance evaluation model for ad-hoc
WLAN's comprising tenninals with different traffk source characteristics is presen ted. Although some publications address this issue, most of them propose to
modify the original standard by some means that will affect the probability of
transmission of a device when the network reaches congestion. The approach of
this publication is to be able to establish a set of equations such that an intelligent
choice of configuration parameters of standard horne devices may improve the
perfonnance of the wireless network. Actually, two models are presented and
compared, a simple one based on stationary behavior ofthe network assuming collisions have a negligible effect on network perfonnance, and a second model
based on a stationary stochastic model of a network, where devices have a packet
ready for transmission at all times.