Privacy-aware physical layer security techniques for smart cities

Abstract

With the current advancements in Internet of Things (IoT) technology, which offers connectivity of the physical world with the sophisticated information processing world, the utopian vision of Smart Cities now appears to be a close reality. This, however, opens the possibility of security breaches of data at various levels, from information collection, to processing, and finally, at the actuation. Due to the presence of low-power devices as information collectors and actuators in the IoT, physical layer security is a promising solution for privacy-aware Smart Cities because of its low implementation cost, and relatively low complexity compared with computation-intensive cryptographic techniques. In this chapter, we first introduce the physical layer architectures suitable for the IoT and discuss the technological challenges associated with them. Building upon them, we present novel optimization techniques and smart green cooperative protocols for maximizing security. We conclude the chapter by discussing open research directions that need further investigation for realizing energy-efficient secure Smart Cities. © 2019 Elsevier Inc. All rights reserved.