6G Wireless Communication Systems: Applications, Requirements, Technologies, Challenges, and Research Directions

TL;DR

This paper explores the future of 6G wireless communication, detailing its envisioned architecture, emerging technologies, applications, challenges, and research directions to achieve higher capacity, data rates, and lower latency.

Contribution

It provides a comprehensive overview of 6G system requirements, potential technologies, and research challenges, offering a future roadmap for next-generation wireless networks.

Findings

Identification of key 6G technologies like AI, terahertz, and quantum communications.

Outline of 6G applications and their specific requirements.

Discussion of challenges and future research directions for 6G development.

Abstract

Fifth-generation (5G) communication, which has many more features than fourth-generation communication, will be officially launched very soon. A new paradigm of wireless communication, the sixth-generation (6G) system, with the full support of artificial intelligence is expected to be deployed between 2027 and 2030. In beyond 5G, there are some fundamental issues, which need to be addressed are higher system capacity, higher data rate, lower latency, and improved quality of service (QoS) compared to 5G system. This paper presents the vision of future 6G wireless communication and its network architecture. We discuss the emerging technologies such as artificial intelligence, terahertz communications, optical wireless technology, free space optic network, blockchain, three-dimensional networking, quantum communications, unmanned aerial vehicle, cell-free communications, integration of wireless information and energy transfer, integration of sensing and communication, integration of access-backhaul networks, dynamic network slicing, holographic beamforming, and big data analytics that can assist the 6G architecture development in guaranteeing the QoS. We present the expected applications with the requirements and the possible technologies for 6G communication. We also outline the possible challenges and research directions to reach this goal.