6G Vision, Value, Use Cases and Technologies from European 6G Flagship Project Hexa-X
Journal article, 2021

While 5G is being deployed and the economy and society begin to reap the associated benefits, the research and development community starts to focus on the next, 6th Generation (6G) of wireless communications. Although there are papers available in the literature on visions, requirements and technical enablers for 6G from various academic perspectives, there is a lack of joint industry and academic work towards 6G. In this paper a consolidated view on vision, values, use cases and key enabling technologies from leading industry stakeholders and academia is presented. The authors represent the mobile communications ecosystem with competences spanning hardware, link layer and networking aspects, as well as standardization and regulation. The second contribution of the paper is revisiting and analyzing the key concurrent initiatives on 6G. A third contribution of the paper is the identification and justification of six key 6G research challenges: (i) “connecting”, in the sense of empowering, exploiting and governing, intelligence; (ii) realizing a network of networks, i.e., leveraging on existing networks and investments, while reinventing roles and protocols where needed; (iii) delivering extreme experiences, when/where needed; (iv) (environmental, economic, social) sustainability to address the major challenges of current societies; (v) trustworthiness as an ingrained fundamental design principle; (vi) supporting cost-effective global service coverage. A fourth contribution is a comprehensive specification of a concrete first-set of industry and academia jointly defined use cases for 6G, e.g., massive twinning, cooperative robots, immersive telepresence, and others. Finally, the anticipated evolutions in the radio, network and management/orchestration domains are discussed.

Wireless networks



Network architecture

Communication systems


Sustainable development


6G mobile communication


Wireless communication

5G mobile communication



Mikko A. Uusitalo


Patrik Rugeland


M. Boldi

Telecom Italia S.P.A

Emilio Calvanese Strinati

The French Alternative Energies and Atomic Energy Commission (CEA)

Panagiotis Demestichas

WINGS ICT Solutions

Marten Ericson


G. Fettweis

Technische Universität Dresden

Miltiadis C. Filippou

Intel Corporation

Azeddine Gati


Marie Helene Hamon


Marco Hoffmann


Matti Latva-Aho

University of Oulu

Aarno Parssinen

University of Oulu

Bjorn Richerzhagen


Hans D. Schotten

Technische Universität Kaiserslautern

Tommy Svensson

Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks

Gustav Wikstrom


Henk Wymeersch

Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks

Volker Ziegler


Yaning Zou

Technische Universität Dresden

IEEE Access

2169-3536 (ISSN) 21693536 (eISSN)

Vol. 9 160004-160020

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4/5/2022 5