A Multi Radio Rendezvous Algorithm Based on Chinese Remainder Theorem in Heterogeneous Cognitive Rad

Abstract:

In cognitive radio networks (CRNs), secondary users can utilize the temporary unused spectrum opportunistically without affecting the quality of services of the licensed users, also called primary users. It is a fundamental operation for a user to rendezvous with another user on the same channel and establish a communication link. Traditional rendezvous algorithms assume homogeneous CRNs and each user equipped with a single radio. In recent years, the cost of wireless transceivers has fallen dramatically. It is more feasible for users to apply multiple radios to reduce the time to rendezvous significantly. In this paper, we propose a Chinese Remainder Theorem (CRT) Based Multi-Radio Rendezvous (CMR) algorithm for heterogeneous CRNs, where the users are unaware of the total number of channels and are allowed to have different spectrum-sensing capabilities. Our CMR scheme applies CRT to achieve fast rendezvous. Simulation results show that CMR has better performance than the previous works.