Space-air-ground integrated network (SAGIN) for 6G: Requirements, architecture and challenges

• Published in: China communications Vol. 19; no. 2; pp. 90 - 108
• Main Authors: Cui, Huanxi, Zhang, Jun, Geng, Yuhui, Xiao, Zhenyu, Sun, Tao, Zhang, Ning, Liu, Jiajia, Wu, Qihui, Cao, Xianbin
• Format: Journal Article
• Language: English
• Published: China Institute of Communications 01.02.2022; School of Electronic and Information Engineering,Beijing Key Laboratory for Network-Based Cooperative Air application Management,Beihang University,Beijing 100191,China%Advanced Research Institute of Multidisciplinary Science,Beijing Institute of Technology,Beijing 100081,China%China Mobile Research Institute,Beijing 100053,China%Department of Electrical and Computer Engineering,University of Windsor,ON,Canada,N9B 3P4%National Engineering Laboratory for Integrated Aero-Space-Ground-Ocean Big Data Application Technology,the School of Cybersecurity,Northwestern Polytechnical University,Xi'an,Shaanxi,710072,China%College of Electronics and Information Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210007,China
• Subjects: 5G mobile communication; 6G mobile communication; Control systems; Industrial Internet of Things; Logic gates; Network architecture; NTN; Protocols; SAGIN; DT; AI; 6G; Network ar-chitecture; NTN; SAGIN

As the fifth-generation (5G) mobile communication network may not meet the requirements of emerging technologies and applications, including ubiquitous coverage, industrial internet of things (IIoT), ubiquitous artificial intelligence (AI), digital twins (DT), etc., this paper aims to explore a nove...