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IEEE 802.11 scanning algorithms: cross-layer experiments

Abstract : In wireless communication, the discovery of the surrounding access points is crucial to provide seamless connectivity to mobile users. In IEEE 802.11, this discovery process is performed by passive and active scanning functions. For both, timers are usually constant (within the 802.11 driver) and their configuration aects the two main scanning performance metrics, i.e., scanning latency and scanning failure. In order to manage this trade-o, we propose some adaptive scanning algorithms that are aware of the access point's signal power and congestion level using cross-layer information. As shown by experimentation in a real testbed, this allows a faster topology discovery while mostly reducing the failure rate.
Keywords : Handover IEEE 802.11
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Contributor : Bibliothèque Télécom Bretagne <>
Submitted on : Wednesday, August 22, 2012 - 11:08:24 AM
Last modification on : Friday, January 8, 2021 - 3:43:17 AM
Long-term archiving on: : Thursday, December 15, 2016 - 10:24:25 AM


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  • HAL Id : hal-00704235, version 1


German Castignani, Nicolas Montavont, Andres Emilio Arcia Moret, Mohamed Rabie Oularbi, Sébastien Houcke. IEEE 802.11 scanning algorithms: cross-layer experiments. [Research Report] Dépt. Réseaux, Sécurité et Multimédia (Institut Mines-Télécom-Télécom Bretagne-UEB); Dépt. Signal et Communications (Institut Mines-Télécom-Télécom Bretagne-UEB); Universidad de Los Andes de Mérida (.); Laboratoire en sciences et technologies de l'information, de la communication et de la connaissance (UMR CNRS 6285 - Télécom Bretagne - Université de Bretagne Occidentale - Université de Bretagne Sud). 2011, pp.23. ⟨hal-00704235⟩



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