6g and Beyond Wireless Communication: A Comprehensive Study on Future Connectivity, Architectures, Challenges and Emerging Technologies

Abstract

The evolution of wireless communication toward 6G and further generations represent a massive technological shift that aims to provide ultra-reliable, intelligent, adaptive and dynamically optimized connectivity for future digital ecosystems. While 5G introduced enhanced mobile broadband, ultra-reliable low latency communication, and massive machine-type communication, the upcoming 6G network is expected to integrate intelligence into every network node and offer communication speeds in terahertz band, extreme energy efficiency, and real-time sensing-communication fusion. This paper presents a detailed study on the fundamental concepts, enabling technologies, architectural innovations, challenges, and potential scope of 6G and beyond wireless communication. The work also highlights the role of artificial intelligence, edge intelligence, holographic communications, quantum-safe security, and space-air-ground integrated networks.

KEYWORDS: 6G, Beyond 5G, Wireless Communication, Terahertz Technology, Intelligent Networks, Edge AI, Holographic Communication, Integrated Sensing and Communication, Future Connectivity.