Augmented Security In Ieee 802.22 Mac Layer Protocol

The emerging network technologies have brought an upheaval in wireless communication. Fourth Generation (4G) networks are designed for better performance by utilizing high band width and better Quality of Service. IEEE 802.22 is one of the 4G technologies that is in draft stage and yet not deployed. Along with its spectrum sensing and spectrum accessing issues, security concerns are also getting attention for its multihop environment. Denial of Service (DoS) attack has already been launched on these networks. Due to decentralized nature of IEEE-802.22 centralized authentication mechanism cannot be implemented to avoid several attacks. This paper presents a solution to detect malicious node by introducing the timing parameter at Medium Access Control (MAC) layer during channel negotiation procedure between two nodes.