A novel node joining alogoritm for spectrum aware cluster-based cognitive radio ad-hoc networks

With the rapid development of wireless technologies, the demand for radio spectrum is ever increasing. Along with the spectrum scarcity problem, radio spectrums are also under utilized. Cognitive radio practices an open spectrum allocation technique, which can make sure efficient handling of the frequency bands. Suitable network is a must for the implementation of cognitive radio networks. This paper presents a novel node-joining algorithm for spectrum aware cluster-based cognitive radio ad-hoc network architecture. The spectrum aware architecture splits the network into groups of clusters where the spatial variations of spectrum availability are considered for clustering. Set of free common channels resides every cluster for smooth shifting among control channels. To maintain the integrity of the clustering method, node-joining protocol is developed. Conclusively, simulation is conducted and the result is presented to evaluate the performance of the protocol.