Physical layer security for Internet of Things networks
Muhammet Kırık, Nusaibah A. Abusanad, Hüseyin Arslan · 2022
In this chapter, the physical layer security (PLS) is interrogated for Internet of things (IoT) networks. As a result of their nature, IoT networks consist of a massive number of devices. These devices are produced in compact sizes and powered with small batteries rather than a grid network. Thus, they are able to have high portability but have low computational capability. Because of these features of IoT devices, the conventional encryption/decryption-based cryptographic security methods used in the classical wireless devices fail to satisfy the security requirements of IoT networks. The main reason for this is that the requirements of these security methods are too demanding for the processing power of IoT devices and stringent to manage when these devices are deployed in a massive number. Therefore, in this chapter, the possible advantages of the PLS in IoT networks are explained. In this manner, the IoT architecture is explained and common attack types in IoT networks are reviewed. Then, the unique features of IoT networks from the PLS perspective are presented along with the possible challenges on the way. A literature review is conducted to propound the current PLS techniques used in IoT networks and the future directions are signified. As a result of this chapter, it is expected that PLS techniques in IoT networks are clarified to the reader and their future applications are encouraged.