In this paper, we present the vision of our project 6G for Connected Sky (6G-SKY) to integrate terrestrial networks (TNs) and non-terrestrial networks (NTNs) and outline the current research activities in 6G research projects in comparison with our project. From the perspectives of industry and academia, we identify key use case segments connecting both aerial and ground users with our 6G-SKY multi-layer network architecture. We explain functional views of our holistic 6G-SKY architecture addressing the heterogeneity of aerial and space platforms. Architecture elements and communication links are identified. We discuss 6G-SKY network design and management functionalities by considering a set of inherent challenges posed by the multi-layer 3-dimensional networks, which we termed as combined airspace and NTN (combined ASN). Finally, we investigate additional research challenges for 6G-SKY project targets.
@article{arxiv.2305.04271,
title = {6G for Connected Sky: A Vision for Integrating Terrestrial and Non-Terrestrial Networks},
author = {Mustafa Ozger and Istvan Godor and Anders Nordlow and Thomas Heyn and Sreekrishna Pandi and Ian Peterson and Alberto Viseras and Jaroslav Holis and Christian Raffelsberger and Andreas Kercek and Bengt Mölleryd and Laszlo Toka and Gergely Biczok and Robby de Candido and Felix Laimer and Udo Tarmann and Dominic Schupke and Cicek Cavdar},
journal= {arXiv preprint arXiv:2305.04271},
year = {2023}
}