Dynamic Rendezvous Channel Setup in Distributed Cognitive Radio Ad-hoc Networks

In this paper, we propose a solution to the problem on how cognitive radios can find each other. The easiest and common practice to address this problem is to have a dedicated control channel on which the nodes can rendezvous with each other. However, a dedicated Common Control Channel (CCC) has severe drawbacks. As a solution to this drawback, we propose a rendezvous channel (RC) setup scheme called Dynamic Rendezvous Channel Setup in Distributed Cognitive Radio Networks (DyRCS). In DyRCS, one of the free channels is chosen as RC rather than having dedicated CCC. Besides, instead of deploying a dedicated central entity, one of the nodes from the Secondary Users (SUs) is in charge of transmitting the RC. Extensive MATLAB simulations were performed to study the effectiveness of DyRCS.