An Asynchronous Channel Hopping Sequence for Rendezvous Establishment in Self Organized Cognitive Radio Networks
A cognitive radio performs spectrum sensing, so that the device is able to self-organize appropriate networking functions. Rendezvous is the process by which the nodes explore the available channels to establish a link when they want to communicate with each other. Although using a dedicated control channel can be a solution to find the common control channel, it may result in a bottleneck and create a single point of failure. In this paper, we propose an asynchronous channel hopping sequences to establish a link in self organizing cognitive radio networks without the assumption of global clock synchronization. Our scheme provides successful communication rendezvous within a bounded time interval. Theoretical analysis and simulation results showed that our scheme outperforms the existing asynchronous schemes used for similar purpose in terms of many performance criteria.
asynchronous channel hopping self organizing cognitive radio communication rendezvous