This book focuses on 6G technology beyond 5G. The objective of next generation 6G wireless communications is to improve the benchmarks while simultaneously delivering additional services. Many widely expected future services, such as life-critical services and wireless brain-computer interactions, will be important to their success. This book presents the evolution of 6G technology, architecture, and implementation. This book provides a comprehensive overview of the theoretical and experimental modelling of 6G communication, providing detailed implementation issues and performance evaluation of emerging technologies along with research results, and networking methods. This book: • Contains a comprehensive overview of 6G communication network technology. • Contains both fundamental theories and cutting-edge technologies. • Covers implementations, architecture, security, privacy, and reliability in 6G communication and performance analysis of the 6G communication. • Future trends and applications covered include vehicle-to-everything, massive radio access networks, Massive IoT Access Cybertwin, Sustainable Society 5.0 using 6G communication. • Covers the challenges and research directions to enable future research to make 6G communication a wireless solution for sustainability. • Contains a comprehensive overview of 6G communication network technology. • Contains both fundamental theories and cutting-edge technologies. • Covers implementations, architecture, security, privacy, and reliability in 6G communication and performance analysis of the 6G communication. • Future trends and applications covered include vehicle-to-everything, massive radio access networks, Massive IoT Access Cybertwin, Sustainable Society 5.0 using 6G communication. • Covers the challenges and research directions to enable future research to make 6G communication a wireless solution for sustainability. This book is primarily written for senior undergraduate students, graduate students, and academic researchers in the fields of electrical engineering, electronics, communications engineering, and computer science and engineering.