Publication
Unified 3D Networks: Architecture, Challenges, Recent Results, and Future Opportunities
Mohamed Rihan; Dirk Wübben; Abhipshito Bhattacharya; Marina Petrova; Xiaopeng Yuan; Anke Schmeink; Amina Fellan; Shreya Tayade; Mervat Zarour; Daniel Lindenschmitt; Hans Schotten; Armin Dekorsy
In: IEEE Open Journal of Vehicular Technology (OJVT), Vol. 1, Pages 1-32, IEEE Xplore, 2024.
Abstract
The very new evolution towards 6G networks necessitates a paradigm shift towards
unified 3D network architectures, encompassing space, air, and ground segments. This paper outlines
the conceptualization, challenges, and prospects of such a transformative architecture. We outline the
foundational principles, drawn from standardization endeavors and cutting-edge research initiatives, to
articulate the envisioned architecture poised to redefine network capabilities. Driven by the need to enhance
capacity, increase data rates, support diverse mobility models, and facilitate heterogeneous connectivity, the
conceptual framework of a unified 3D network is presented. The focus is on seamlessly integrating diverse
network segments and fostering holistic network orchestration. In examining the technical challenges
inherent to the realization of a unified 3D network, we outline our strategies to address mobility
management, handover optimization, interference mitigation, and the integration of distributed physical
layer concepts. Proposals encompass federated learning mechanisms, advanced beamforming techniques,
and energy-efficient computational offloading strategies, aimed at enhancing network performance and
resilience. Moreover, we outline compelling utilization scenarios and highlighted promising avenues for
future research.