Um Esquema Cooperativo para Análise da Presença de Ataques EUP em Redes Ad Hoc de Rádio Cognitivo

• Julio Soto UFPR
• Saulo Queiroz UFPR
• Michele Nogueira UFPR

DOI: https://doi.org/10.5753/sbseg.2012.20544

Abstract

In Cognitive Radio Ad Hoc Networks, malicious Secondary Users can exploit CR capabilities to perform Primary User Emulation Attacks (PUEA). These attacks pretend the characteristics of a Primary User, giving to malicious users the priority of using licensed frequencies over well-behaved unlicensed Secondary Users. To address this problem, studies in the literature have proposed the use of specific criteria to detect PUE attacks. Such solutions, however, do not consider the use of multiple different criteria to infer the presence of PUEA on the network. To fill this gap, we propose INCA, a novel multIple criteria scheme for the deceNtralized and Cooperative Analysis of the PUEA presence in CRAHNs. INCA follows two phases. On the first, each SU employs multiple criteria to define a hypothesis about the potential existence of attacks; whereas on the second, these hypotheses are exchanged among neighbors, and each SU employs the Bayes theorem to calculate the final probability of the PUEA presence. Simulation results show the improvement and effectiveness of the multi-criteria approach.

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