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arXiv · 2505.12379

Toward Near-Space Communication Network in the 6G and Beyond Era

Xinhua Liu·Zhen Gao·Ziwei Wan·Zhonghuai Wu·Tuan Li·Tianqi Mao·Xiao Liang·Dezhi Zheng·Jun Zhang
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Abstract

Near-space communication network (NS-ComNet), as an indispensable component of sixth-generation (6G) and beyond mobile communication systems and the space-air-ground-sea integrated network (SAGSIN), demonstrates unique advantages in wide-area coverage, long-endurance high-altitude operation, and highly flexible deployment. This paper presents a comprehensive review of NS-ComNet for 6G and beyond era. Specifically, by contrasting satellite, low-altitude unmanned-aerial-vehicle (UAV), and terrestrial communications, we first elucidate the background and motivation for integrating NS-ComNet into 6G network architectures. Subsequently, we review the developmental status of near-space platforms, including high-altitude balloons, solar-powered UAVs, and stratospheric airships, and analyze critical challenges faced by NS-ComNet. To address these challenges, the research focuses on key enabling technologies such as topology design, resource and handover management, multi-objective joint optimization, etc., with particular emphasis on artificial intelligence techniques for NS-ComNet. Finally, envisioning future intelligent collaborative networks that integrate NS-ComNet with satellite-UAV-terrestrial systems, we explore promising directions. This paper aims to provide technical insights and research foundations for the systematic construction of NS-ComNet and its deep deployment in the 6G and beyond era.

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Xinhua Liu, Zhen Gao, Ziwei Wan, Zhonghuai Wu, Tuan Li, Tianqi Mao, Xiao Liang, Dezhi Zheng, Jun Zhang. 2025-05-18. Toward Near-Space Communication Network in the 6G and Beyond Era. https://arxiv.org/abs/2505.12379

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