A novel cheater and jammer detection scheme for IEEE 802.11-based wireless LANs

The proliferation of IEEE 802.11 networks has made them an easy and attractive target for malicious devices/adversaries which intend to misuse the available network. In this paper, we introduce a novel malicious entity detection method for IEEE 802.11 networks. We propose a new metric, the Beacon Access Time (BAT), which is employed in the detection process and inherits its characteristics from the fact that beacon frames are always given preference in IEEE 802.11 networks. An analytical model to define the aforementioned metric is presented and evaluated with experiments and simulations. Furthermore, we evaluate the adversary detection capabilities of our scheme by means of simulations and experiments over a real testbed. The simulation and experimental results indicate consistency and both are found to follow the trends indicated in the analytical model. Measurement results indicate that our scheme is able to correctly detect a malicious entity at a distance of, at least, 120 m. Analytical, simulation and experimental results signify the validity of our scheme and highlight the fact that our scheme is both efficient and successful in detecting an adversary (either a jammer or a cheating device). As a proof of concept, we developed an application that when deployed at the IEEE 802.11 Access Point, is able to effectively detect an adversary. (C) 2015 Elsevier B.V. All rights reserved.Postprint (author's final draft

Wi-Fi Optimisation Solutions Roadmap

The two main contributions of this deliverable are: 1) A roadmap showing the need for optimisation as experienced by the user over time versus the optimisation offered by the various proposed wireless technologies, including Wi-5. It is largely based on the evolution roadmap of IEEE802.11, as from a survey among six European operators we concluded that by and large they intend to keep following the Wi-Fi Alliance product roadmap with regard to their Wi-Fi deployment plans, given the needs of their customers. 2) The results of our quantitative modelling of the dense apartment use case regarding various spectral efficiency performance indicators, such as throughput per apartment, and average throughput for the complete apartment block. The results show that for this use case the Wi5 solution provides a significant improvement in spectral efficiency compared to the current situation where everybody freely chooses a channel or there is limited automatic channel selection performed by the Access Point (AP)