  Background/Introduction: Integrating cognitive radio (CR) with traditional
wireless networks is helping solve the problem of spectrum scarcity in an
efficient manner. The opportunistic and dynamic spectrum access features of CR
provide the functionality to its unlicensed users to utilize the underutilized
spectrum at the time of need because CR nodes can sense vacant bands of
spectrum and can also access them to carry out communication. Various
capabilities of CR nodes depend upon efficient and continuous reporting of data
with each other and centralized base stations, which in turn can cause leakage
in privacy. Experimental studies have shown that the privacy of CR users can be
compromised easily during the cognition cycle, because they are knowingly or
unknowingly sharing various personally identifiable information (PII), such as
location, device ID, signal status, etc. In order to preserve this privacy
leakage, various privacy preserving strategies have been developed by
researchers, and according to us differential privacy is the most significant
among them.
