Afef Ben Hadj Alaya-Feki

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This paper introduces interference cartography, a simple and effective concept that helps detect, identify and use spectrum opportunities in a secondary spectrum usage context. Interference cartography combines measurements performed by different network entities (mobile terminals, base stations, access points) with the geo-location information and applies(More)
Dynamic spectrum access (DSA) is an emerging notion in cognitive radio, aiming to improve the spectrum usage with reliable secondary access to the spectral resources. The main challenge in DSA is the detection of spectral opportunities and their efficient utilization without causing interference to the primary users. For this goal, we propose to make use of(More)
Radio measurements play a crucial role in mobile wireless networks as they are input of Radio Resource Management (RRM) mechanisms, needed to assess mobile network reliability and to supervise the planned coverage area. Nevertheless, these measurements are used in their crude state without any additional intelligent treatment whereas they are a rich and(More)
This paper presents a use case scenario of IEEE P1900.4 standard designed to achieve temporal opportunistic spectrum access within IEEE802.11 bands. This offers a flexible framework that allows better utilization of radio resources and thus increases spectral efficiency. In this work, we propose a complete framework including scenario description with IEEE(More)
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