TY - JOUR
T1 - On the Road to 6G
T2 - Visions, Requirements, Key Technologies, and Testbeds
AU - Wang, Cheng Xiang
AU - You, Xiaohu
AU - Gao, Xiqi
AU - Zhu, Xiuming
AU - Li, Zixin
AU - Zhang, Chuan
AU - Wang, Haiming
AU - Huang, Yongming
AU - Chen, Yunfei
AU - Haas, Harald
AU - Thompson, John S.
AU - Larsson, Erik G.
AU - Renzo, Marco Di
AU - Tong, Wen
AU - Zhu, Peiying
AU - Shen, Xuemin
AU - Vincent Poor, H.
AU - Hanzo, Lajos
N1 - Publisher Copyright:
© 1998-2012 IEEE.
PY - 2023
Y1 - 2023
N2 - Fifth generation (5G) mobile communication systems have entered the stage of commercial deployment, providing users with new services, improved user experiences as well as a host of novel opportunities to various industries. However, 5G still faces many challenges. To address these challenges, international industrial, academic, and standards organizations have commenced research on sixth generation (6G) wireless communication systems. A series of white papers and survey papers have been published, which aim to define 6G in terms of requirements, application scenarios, key technologies, etc. Although ITU-R has been working on the 6G vision and it is expected to reach a consensus on what 6G will be by mid-2023, the related global discussions are still wide open and the existing literature has identified numerous open issues. This paper first provides a comprehensive portrayal of the 6G vision, technical requirements, and application scenarios, covering the current common understanding of 6G. Then, a critical appraisal of the 6G network architecture and key technologies is presented. Furthermore, existing testbeds and advanced 6G verification platforms are detailed for the first time. In addition, future research directions and open challenges are identified to stimulate the on-going global debate. Finally, lessons learned to date concerning 6G networks are discussed.
AB - Fifth generation (5G) mobile communication systems have entered the stage of commercial deployment, providing users with new services, improved user experiences as well as a host of novel opportunities to various industries. However, 5G still faces many challenges. To address these challenges, international industrial, academic, and standards organizations have commenced research on sixth generation (6G) wireless communication systems. A series of white papers and survey papers have been published, which aim to define 6G in terms of requirements, application scenarios, key technologies, etc. Although ITU-R has been working on the 6G vision and it is expected to reach a consensus on what 6G will be by mid-2023, the related global discussions are still wide open and the existing literature has identified numerous open issues. This paper first provides a comprehensive portrayal of the 6G vision, technical requirements, and application scenarios, covering the current common understanding of 6G. Then, a critical appraisal of the 6G network architecture and key technologies is presented. Furthermore, existing testbeds and advanced 6G verification platforms are detailed for the first time. In addition, future research directions and open challenges are identified to stimulate the on-going global debate. Finally, lessons learned to date concerning 6G networks are discussed.
KW - 6G application scenarios
KW - 6G challenges
KW - 6G key performance indicators (KPIs)
KW - 6G key technologies
KW - 6G network architecture
KW - 6G testbeds
KW - 6G vision
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U2 - 10.1109/COMST.2023.3249835
DO - 10.1109/COMST.2023.3249835
M3 - Article
AN - SCOPUS:85149374135
SN - 1553-877X
VL - 25
SP - 905
EP - 974
JO - IEEE Communications Surveys and Tutorials
JF - IEEE Communications Surveys and Tutorials
IS - 2
ER -