Endogenous Security Techniques for Safeguarding Next-Generation Spectrum Usage at the Physical Layer

The rapid increase in the data transmission rates for next-generation communication systems has intensified the demand for spectrum, straining limited resources under traditional management. This has spurred a move toward dynamic spectrum sharing and exploration of higher frequency bands. Although spectrum sharing enables other users to access the underutilized whitespace spectrum, it also raises additional security concerns. The possibility of attacks at higher carrier frequencies has not yet been well characterized. To address these challenges, endogenous properties of wireless communication systems can be explored as new opportunities for security design. The purpose of this tutorial is to provide a comprehensive overview of the state-of-the-art wireless endogenous security techniques that guarantee wireless security and privacy for spectrum usage at the physical layer, along with the principles, solutions, and future research trends.