Channel Hopping Algorithm Based on Multiple Radios for Cognitive Radio Networks

摘要

Rendezvous procedure is the first key step for Secondary Users (SUs) to meet with their target SUs in Cognitive Radio Networks (CRNs). Channel Hopping (CH) technique is a common method to solve the rendezvous problem. Multiple radios are utilized in several latest researches owing to the fact that it can shorten the Time-To-Rendezvous (TTR) while the cost of the device is low. In this report, we propose a CH algorithm based on multiple radios, named Hybrid Radio Rendezvous (HRR) algorithm for the rendezvous problem in CRNs. SUs can rendezvous with their target SUs within a limited time by using the HRR algorithm no matter how many radios they are equipped with. In addition, the upper bounders of Maximum TTR (MTTR) are derived for the HRR algorithm. Moreover, extensive simulations are conducted to evaluate the performance of the HRR algorithm in terms of Expected TTR (ETTR) and MTTR.