查看文章

Among the IEEE 802.11 models proposed in the literature most concentrate solely on homogeneous traffic sources (i.e., with the same arrival rate) and there are only a few which concentrate on heterogeneous nonsaturated traffic sources. This paper proposes a comprehensive analysis of heterogeneous traffic sources (saturated or nonsaturated) with M/M/1/K queues. The mathematical model proposed in this paper allows the calculation of the following parameters: per-station and network throughput, delay (including service time and queuing delay), and frame loss probability (including probability of dropping a frame at the MAC layer and in a transmission queue). Simulation results show the impact of the presence of different traffic source types on each other and validate the correctness of the proposal for a variable number of stations and under different network loads. Importantly, the new model is kept …