A scalable Dynamic Spectrum Access solution for large wireless networks

In this paper we present a distributed Dynamic Spectrum Access framework which can scale up to networks of large size. According to it, the network is divided into clusters, and spectrum access is performed by leveraging on a virtual network coded cognitive control channel that works in conjunction with a channel allocation scheme based on graph coloring. We evaluate the performance of this approach in terms of control information dissemination reliability, channel allocation efficiency, inter-cluster interference and control information overhead. Finally, we compare the proposed solution to state-of-the-art schemes with respect to some known security attacks that can be performed against Dynamic Spectrum Access networks.