A hands-on guide and mathematical approach to tackling security challenges and overall performance issues in 5G-based Io T communications The Internet of Things (Io T) provides connectivity and data exchange anytime and anywhere among a wide variety of physical objects such as sensors, vehicles, and mobile phones. This book is a concise guide to securing wireless Internet of Things (Io T) systems at the communications level, covering wireless spectrum sharing systems, smart grid communications, machine-to-machine communications, and uplink/downlink communications for Io T applications. The methods, optimization problems, mathematical solutions, algorithms, and programming codes in the book can be applied directly or extended as countermeasures for different Io T vulnerabilities.Coverage includes: Detailed solutions for tackling communications security threats Secure spectrum auction design Spectrum trading architecture Distributed optimization algorithm Latency-centric Io T uplink framework MATLAB code for Io T spectrum sharing and Io T smart grid Joint carrier aggregation for Io T spectrum sharing systems Anomaly detection and classification