An Accurate Delay Model with Consideration of Coupled Queues Effect for Nonsaturated IEEE 802.11 Wireless Networks

Abstract

Abstract For analysis of the delay characteristics of the IEEE 802.11-based networks under nonsaturated condition, one of the key assumptions commonly accepted is that given the offered load, the queue utilizations of contending nodes are the same for all transmitted packets. In practice, however, this assumption is not valid due to coupled queues effect. In this paper, we investigate the influence brought by coupled queues and propose an accurate delay model for IEEE 802.11-based networks under nonsaturated condition. The simulations show the accuracy of the analytical model.