ASCH: A novel asymmetric synchronous channel hopping algorithm for Cognitive Radio Networks

Cognitive Radio Network (CRN) is a growing cutting edge technology in the field of wireless communication. The fundamental idea behind CRN is to allow some unlicensed Secondary Users (SUs) who can utilize the spectrum holes in absence of the licensed Primary Users (PUs). Channel Hopping (CH) procedure is followed by the SUs to establish the rendezvous process. In this paper, a novel Asymmetric Synchronous Channel Hopping (ASCH) protocol is proposed in which different SUs can have different sets of channels to establish the rendezvous. Simulation results show that our protocol can achieve better performance over the exiting channel hopping protocols in terms of degree of rendezvous, Maximum Time To Rendezvous (MTTR), and throughput.