University of Oulu

C. D. Alwis et al., "Survey on 6G Frontiers: Trends, Applications, Requirements, Technologies and Future Research," in IEEE Open Journal of the Communications Society, vol. 2, pp. 836-886, 2021, doi: 10.1109/OJCOMS.2021.3071496

Survey on 6G frontiers : trends, applications, requirements, technologies and future research

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Author: De Alwis, Chamitha1; Kalla, Anshuman2; Pham, Quoc-Viet3;
Organizations: 1Department of Electrical and Electronic Engineering, University of Sri Jayewardenepura, Nugegoda 10250, Sri Lanka
2Centre for Wireless Communications, University of Oulu, 90570 Oulu, Finland
3orean Southeast Center for the 4th Industrial Revolution Leader Education, Pusan National University, Busan 46241, Republic of Korea
4Department of Computer Science, Swansea University, Swansea SA2 8PP, U.K
5Nimbus Research Centre, Munster Technological University, Bishopstown, Cork, T12 P928, Ireland
6Department of Biomedical Convergence Engineering, Pusan National University, Yangsan 50612, South Korea
7School of Computer Science, University Collage Dublin, Dublin 4, D04 V1W8, Ireland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 6.1 MB)
Persistent link:
Language: English
Published: Institute of Electrical and Electronics Engineers, 2021
Publish Date: 2021-07-12


Emerging applications such as Internet of Everything, Holographic Telepresence, collaborative robots, and space and deep-sea tourism are already highlighting the limitations of existing fifth-generation (5G) mobile networks. These limitations are in terms of data-rate, latency, reliability, availability, processing, connection density and global coverage, spanning over ground, underwater and space. The sixth-generation (6G) of mobile networks are expected to burgeon in the coming decade to address these limitations. The development of 6G vision, applications, technologies and standards has already become a popular research theme in academia and the industry. In this paper, we provide a comprehensive survey of the current developments towards 6G. We highlight the societal and technological trends that initiate the drive towards 6G. Emerging applications to realize the demands raised by 6G driving trends are discussed subsequently. We also elaborate the requirements that are necessary to realize the 6G applications. Then we present the key enabling technologies in detail. We also outline current research projects and activities including standardization efforts towards the development of 6G. Finally, we summarize lessons learned from state-of-the-art research and discuss technical challenges that would shed a new light on future research directions towards 6G.

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Series: IEEE open journal of the Communications Society
ISSN: 2644-125X
ISSN-E: 2644-125X
ISSN-L: 2644-125X
Volume: 2
Pages: 836 - 886
DOI: 10.1109/OJCOMS.2021.3071496
Type of Publication: A2 Review article in a scientific journal
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: 10.13039/501100003725-National Research Foundation of Korea (NRF); Korean Government (MSIT); European Union in RESPONSE 5G; 10.13039/501100002341-Academy of Finland in 6Genesis; Secure Connect Projects; Institute of Information and Communications Technology Planning and Evaluation (IITP); 10.13039/501100003621-Korea Government (MSIT); 10.13039/501100002543-Artificial Intelligence Convergence Research Center, Pusan National University
Copyright information: © The Authors 2021. This work is licensed under a Creative Commons Attribution 4.0 License. For more information, see