title: Experimental Optimization of Exposure Index and Quality of Service in Wlan Networks.
abstract: This paper presents the first real-life optimization of the Exposure Index (EI). A genetic optimization algorithm is developed and applied to three real-life Wireless Local Area Network scenarios in an experimental testbed. The optimization accounts for downlink, uplink and uplink of other users, for realistic duty cycles, and ensures a sufficient Quality of Service to all users. EI reductions up to 97.5% compared to a reference configuration can be achieved in a downlink-only scenario, in combination with an improved Quality of Service. Due to the dominance of uplink exposure and the lack of WiFi power control, no optimizations are possible in scenarios that also consider uplink traffic. However, future deployments that do implement WiFi power control can be successfully optimized, with EI reductions up to 86% compared to a reference configuration and an EI that is 278 times lower than optimized configurations under the absence of power control.
authors.affiliation: Ghent University/iMinds, Department of Information Technology, Technologiepark 15, B-9052Ghent, Belgium.
authors.forename: David
authors.initials: D
authors.lastname: Plets
authors.affiliation: Ghent University/iMinds, Department of Information Technology, Technologiepark 15, B-9052Ghent, Belgium.
authors.forename: Günter
authors.initials: G
authors.lastname: Vermeeren
authors.affiliation: Ghent University/iMinds, Department of Information Technology, Technologiepark 15, B-9052Ghent, Belgium.
authors.forename: Eli De
authors.initials: E
authors.lastname: Poorter
authors.affiliation: Ghent University/iMinds, Department of Information Technology, Technologiepark 15, B-9052Ghent, Belgium.
authors.forename: Ingrid
authors.initials: I
authors.lastname: Moerman
authors.affiliation: Department of Physics, Aristotle University of Thessaloniki, Thessaloniki54124, Greece.
authors.forename: Sotirios K
authors.initials: SK
authors.lastname: Goudos
authors.affiliation: Ghent University/iMinds, Department of Information Technology, Technologiepark 15, B-9052Ghent, Belgium.
authors.forename: Martens
authors.initials: M
authors.lastname: Luc
authors.affiliation: Ghent University/iMinds, Department of Information Technology, Technologiepark 15, B-9052Ghent, Belgium.
authors.forename: Joseph
authors.initials: J
authors.lastname: Wout
mesh_terms: D000465:Algorithms; D006801:Humans; D000069079:Radiation Exposure