Performance Analysis of the IEEE 802.11 MAC and Physical Layer Protocol

We present in this paper an analytical model that accounts for the positions of stations with respect to the Access Point (AP) while evaluating the performance of 802.11 MAC layer. Our work is based on the Bianchi’s model where the performance of 802.11 MAC layer is computed using a discrete time Markov chain, but where all stations are implicitly assumed to be located at the same distance to the AP. In our model, given the position of one station, we compute its saturation throughput while conditioning on the positions of the other concurrent stations. Further, our model provides the total saturation throughput of the medium. We solve the model numerically and we show that the saturation throughput per station is strongly dependent not only on the station’s position but also on the positions of the other stations. Results confirm that a station achieves a higher throughput when it is closer to the AP but bring out that there is a distance threshold above which the throughput dec...

• Type: Conference
• Year: 2005
• Where: WOWMOM
• Authors: Mohammad Hossein Manshaei, Gion Reto Cantieni, Chadi Barakat, Thierry Turletti
• Keywords: Mac Layer, Model, Throughput, WOWMOM 2005