University of Oulu

M. A. Uusitalo et al., "6G Vision, Value, Use Cases and Technologies From European 6G Flagship Project Hexa-X," in IEEE Access, vol. 9, pp. 160004-160020, 2021, doi: 10.1109/ACCESS.2021.3130030

6G vision, value, use cases and technologies from European 6G Flagship project Hexa-X

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Author: Uusitalo, Mikko A.1; Rugeland, Patrik2; Boldi, Mauro Renato3;
Organizations: 1Nokia Bell Labs, Espoo, Finland
2Ericsson Research, Stockholm, Sweden
3Telecom Italia (TIM), Turin, Italy
4CEA/LETI, Grenoble, France
5Wings ICT-Solutions, Nea Smyrni, Athens, Greece
6Ericsson Research, Luleå, Sweden
7TU Dresden, Dresden, Germany
8Barkhausen Institut, Dresden, Germany
9Next Generation and Standards Group, Intel Germany, Neubiberg, Germany
10Orange, Rennes, France
11Nokia Bell Labs, Munich, Germany
12Center of Wireless Communications, University of Oulu, Oulu, Finland
13Siemens, Munich, Germany
14Wireless Communication and Navigation, University of Kaiserslautern, Kaiserslautern, Germany
15Communication Systems Group, Chalmers University of Technology, Gothenburg, Sweden
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 3.3 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2021
Publish Date: 2021-12-20


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, 6 th 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.

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Series: IEEE access
ISSN: 2169-3536
ISSN-E: 2169-3536
ISSN-L: 2169-3536
Volume: 9
Pages: 160004 - 160020
DOI: 10.1109/ACCESS.2021.3130030
Type of Publication: A1 Journal article – refereed
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This work was supported by the European Union’s Horizon 2020 Research and Innovation Program under Grant 101015956 Hexa-X (see
EU Grant Number: (EU) Hexa-X - 6G vision and intelligent fabric of technology enablers connecting human, physical, and digital worlds
Copyright information: This work is licensed under a Creative Commons Attribution 4.0 License. For more information, see