Routing in Cognitive Radio Ad-Hoc Networks
Payel Bandyopadhyay · 2013
Abstract—Cognitive Radio (CR) mitigates the problem of inefficient spectrum usage. Cognitive radio is based on Dynamic Spectrum Access (DSA), through which unlicensed users can use the licensed spectrum band without causing harmful interference to the licensed users. However, this dynamic spectrum access increases designing of communication protocols in different layers. In this paper, I have presented several challenges that cognitive radio ad-hoc networks faces while routing. The main challenges that I have focused on is spectrum awareness, set up of quality routes and maintenance of those routes. In the next section, several solutions based on these challenges have been presented. The routing solutions presented in this paper is categorised into full spectrum knowledge and local spectrum knowledge. In the last section of this paper, a comparison of all the above mentioned solutions have been presented. I.