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With the development of low earth orbit (LEO) satellites and unmanned aerial vehicles (UAVs), the space-air-ground integrated network (SAGIN) becomes a major trend in the next-generation networks. However, due to the instability of…

Social and Information Networks · Computer Science 2025-06-19 Boran Wang , Ziye Jia , Can Cui , Qihui Wu

The space-air-ground integrated network (SAGIN) concept is vital for the development of seamless next-generation (NG) wireless coverage, integrating satellites, unmanned aerial vehicles, and manned aircraft along with the terrestrial…

Signal Processing · Electrical Eng. & Systems 2025-03-04 Phuc V. Trinh , Shinya Sugiura , Chao Xu , Lajos Hanzo

The upcoming sixth generation (6G) wireless communication network is envisioned to cover space, air, and maritime areas, in addition to urban-centered terrestrial coverage by the fifth generation (5G) network, to support intelligent…

Information Theory · Computer Science 2024-02-13 Wei Feng , Yanmin Wang , Yunfei Chen , Ning Ge , Cheng-Xiang Wang

Unmanned aerial vehicles (UAVs) are considered as one of the promising technologies for the next-generation wireless communication networks. Their mobility and their ability to establish line of sight (LOS) links with the users made them…

Signal Processing · Electrical Eng. & Systems 2021-10-27 Mohamed-Amine Lahmeri , Mustafa A. Kishk , Mohamed-Slim Alouini

Space-air-ground integrated network (SAGIN) is a new type of wireless network mode. The effective management of SAGIN resources is a prerequisite for high-reliability communication. However, the storage capacity of space-air network segment…

Networking and Internet Architecture · Computer Science 2022-02-07 Chao Wang , Lei Liu , Chunxiao Jiang , Shangguang Wang , Peiying Zhang , Shigen Shen

This paper surveys the application and development of Artificial Intelligence (AI) in Satellite Communication (SatCom) and Non-Terrestrial Networks (NTN). We first present a comprehensive list of use cases, the relative challenges and the…

Space-air-ground integrated networks (SAGINs) interconnect satellites, uncrewed aerial vehicles (UAVs), and ground devices to enable flexible and ubiquitous wireless services. The integration of reconfigurable intelligent surfaces (RISs)…

Networking and Internet Architecture · Computer Science 2026-03-06 Yuxuan Yang , Bin Lyu , Abbas Jamalipour

In post-disaster space-air-ground integrated networks (SAGINs), terrestrial infrastructure is often impaired, and unmanned aerial vehicles (UAVs) must rapidly restore connectivity for mission-critical ground terminals in cluttered…

Systems and Control · Electrical Eng. & Systems 2025-11-18 Liangshun Wu , Wen Chen , Shunqing Zhang , Yajun Wang , Kunlun Wang

The space-air-ground integrated network (SAGIN) is a pivotal architecture to support ubiquitous connectivity in the upcoming 6G era. Inter-operator resource and service sharing is a promising way to realize such a huge network, utilizing…

Information Theory · Computer Science 2024-04-26 Shizhao He , Jungang Ge , Ying-Chang Liang , Dusit Niyato

The next generation of satellite constellations is designed to better address the future needs of our connected society: highly-variable data demand, mobile connectivity, and reaching more under-served regions. Artificial Intelligence (AI)…

Artificial Intelligence · Computer Science 2021-12-14 Juan Jose Garau-Luis , Skylar Eiskowitz , Nils Pachler , Edward Crawley , Bruce Cameron

Reconfigurable intelligent surfaces (RISs) are expected to make future 6G networks more connected and resilient against node failures, due to their ability to introduce controllable phase-shifts onto impinging electromagnetic waves and…

Information Theory · Computer Science 2023-08-22 Mohammed S. Al-Abiad , Mohammad Javad-Kalbasi , Shahrokh Valaee

To provide seamless coverage during all flight phases, aeronautical communications systems (ACS) have to integrate space-based, air-based, as well as ground-based platforms to formulate aviation-oriented space-air-ground integrated networks…

Signal Processing · Electrical Eng. & Systems 2023-01-18 Jingjing Zhao , Yanbo Zhu , Kaiquan Cai , Zhen Gao , Zhu Han , Lajos Hanzo

In the coming sixth generation (6G) communication era, to provide seamless and ubiquitous connections, the space-air-ground-sea integrated network (SAGSIN) is envisioned to address the challenges of communication coverage in areas with…

Information Theory · Computer Science 2024-06-18 Siqi Meng , Shaohua Wu , Jiaming Zhang , Junlan Cheng , Haibo Zhou , Qinyu Zhang

The rapid development of the aviation Internet of Things (IoT) has positioned in-flight connectivity (IFC) as one of its critical applications. Space-air-ground integrated networks (SAGIN) are essential for ensuring the performance of IFC…

Information Theory · Computer Science 2024-12-24 Qian Chen , Chenyu Wu , Shuai Han , Weixiao Meng , Tony Q. S. Quek

In space-air-ground integrated networks (SAGINs), cognitive spectrum sharing has been regarded as a promising solution to improve spectrum efficiency by enabling a secondary network to access the spectrum of a primary network. However,…

Signal Processing · Electrical Eng. & Systems 2023-12-14 Zizhen Zhou , Qianqian Zhang , Jungang Ge , Ying-Chang Liang

In this letters, an energy-efficient integrated sensing and communication (ISAC) for space-air-ground integrated network (SAGIN)-based Internet of Things (IoT) systems is proposed to facilitate wide coverage and real-time 6G services. For…

Systems and Control · Electrical Eng. & Systems 2025-09-11 Sooyeob Jung , Seongah Jeong , Jinkyu Kang

In this paper, we propose a novel wireless scheme that integrates satellite, airborne, and terrestrial networks aiming to support ground users. More specifically, we study the enhancement of the achievable users' throughput assisted with…

Networking and Internet Architecture · Computer Science 2019-12-10 Ahmad Alsharoa , Mohamed-Slim Alouini

In emergency wireless communications (EWC) scenarios, ensuring reliable, flexible, and high-rate transmission while simultaneously maintaining seamless coverage and rapid response capabilities presents a critical technical challenge. To…

Signal Processing · Electrical Eng. & Systems 2025-10-09 Yinong Chen , Wenchi Cheng , Jingqing Wang , Xiao Zheng , Jiangzhou Wang

Unmanned aerial vehicles (UAVs) and communication systems are fundamental elements in Mission Critical services, such as search and rescue. In this article, we introduce an architecture for managing and orchestrating 5G and beyond networks…

Networking and Internet Architecture · Computer Science 2021-02-05 Cristiano Bonato Both , João Borges , Luan Gonçalves , Cleverson Nahum , Ciro Macedo , Aldebaro Klautau , Kleber Cardoso

Sensing is anticipated to have wider extensions in communication systems with the boom of non-terrestrial networks (NTNs) during the past years. In this paper, we study a bistatic sensing system by maximizing the…

Signal Processing · Electrical Eng. & Systems 2024-09-26 Xiangyu Li , Bodong Shang , Qingqing Wu