Networking

Cell-Level Modeling of IEEE 802.11 WLANs

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Executive Summary

The authors develop a scalable cell-level analytical model for multi-cell infrastructure IEEE 802.11 WLANs under a so-called Pairwise Binary Dependence (PBD) condition. The PBD condition is a geometric property under which the relative locations of the nodes inside a cell do not matter and the network is free of hidden nodes. For the cases of saturated nodes and TCP-controlled long-file downloads, they provide accurate predictions of cell throughputs. Similar to Bonald et al (Sigmetrics, 2008), they model a multi-cell WLAN under short-file downloads as "A network of processor-sharing queues with state-dependent service rates."

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