Selfish Attack Detection in Cognitive Ad-Hoc Network

Abstract

The wireless technologies have penetrated everyone’s life in various ways in the recent past. So due to increase in the demand for the bandwidth in spectrum, as all the bandwidth allocation done is in static manner so there is scarcity of bandwidth in spectrum. So no bandwidth is left to allocate for new technology Cognitive Radio (CR) is a promising technology that can alleviate the spectrum shortage problem by enabling unlicensed users equipped with CRs to coexist with existing users in licensed spectrum bands while causing no interference to existing communications. Spectrum sensing is one of the essential mechanisms of CRs and its operational aspects are being investigated actively. However, little research has been done regarding security in cognitive radio, while much more research has been done on spectrum sensing and allocation problems. A selfish cognitive radio node can occupy all or part of the resources of multiple channels, prohibiting other cognitive radio nodes from accessing these resources. Selfish cognitive radio attacks are a serious security problem because they significantly degrade the performance of a cognitive radio network