期刊名称：International Journal of Innovative Research in Computer and Communication Engineering
印刷版ISSN：2320-9798
电子版ISSN：2320-9801
出版年度：2014
卷号：2
期号：12
出版社：S&S Publications
摘要：The wireless communications are generating the spectrum shortage problems with the Reference to thelatest developments. The more challenges in the use of licensed wireless networks or unlicensed wireless networks withopportunistic use of the spectrum with limited rules or without limited rules. The different frequency bands are used bydifferent wireless networks. So it’s very important to use attenuation bands when there is no activity occurs on them. Anew technology which leads like Cognitive radio is to solve these problems through dynamically utilization of rules andspectrum. Several spectrum sharing schemes have been proposed in cognitive radio. The major and challenging issuesare security in cognitive radio network. The attackers in cognitive radio technology as compared to the wirelessnetworks in a general form chances are prearranged. Mobile station equipment may switch to any available frequencyband in the cognitive radio, and make list of free channel and take handoff decision. So whenever handoff is made therewill be a chance that malicious attacker may hack ongoing traffic. He may even break off established traffic byimitating any kind of active or passive attack like spoofing denial of service, interception etc. This paper discovers thekey challenges to give security in cognitive radio networks. And discusses the current security carriage of rising IEEE802.22 cognitive radio typical and recognizes security threats and vulnerabilities along with the countermeasures andsolutions.
