Collaborative approach on mitigating spectrum sensing data hijack attack and dynamic spectrum allocation based on CASG modeling in wireless cognitive radio networks

Cognitive radio networks being a promising technology among the wireless devices where dynamic spectrum access by secondary users to utilize the scarce spectrum among the Primary spectrum owners (PSO). The spectrum is being masqueraded and secondary users occupants are attacked, one among the vulnerability issue is spectrum sensing data hijack (SSDH). We have proposed a combinatorial auction based schema to allocate the spectrum to secondary users based on combined auction multi stage stackelberg game has been invoked to analyse the spectrum, the winner has been allocated the spectrum based on greedy approach. The SSDH attack has been mitigated using the neighbor monitoring approach and the revealed approach makes the prone free allocation and improves the secrecy rate of the Spectrum. The competitors of secondary users are allocated with ideal spectrum based greedy winning approach. The Primary Spectrum owners perform a recall approach if the residing primary users inside PSO have wide scarcity towards the spectrum. The allotted spectrum of winner from the corresponding secondary users will be recalled for bidding and the spectrum will be allocated to the primary user in this recall based scenario.