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Software-defined networking (SDN) based low earth orbit (LEO) satellite networks leverage the SDN's benefits of the separation of data plane and control plane, control plane programmability, and centralized control to alleviate the problem…

Networking and Internet Architecture · Computer Science 2025-04-21 Zhiyun Jiang , Wei Li , Menglong Yang

Satellite communication by leveraging the use of low earth orbit (LEO) satellites is expected to play an essential role in future communication systems through providing ubiquitous and continuous wireless connectivity. This thus has…

Networking and Internet Architecture · Computer Science 2022-10-18 Jingwei Zhang , Dali Qin , Chuili Kong , Feiran Zhao , Rong Li , Jun Wang , Ye Wang

This paper investigates joint device identification, channel estimation, and symbol detection for LEO satellite-enabled grant-free random access systems, specifically targeting scenarios where remote Internet-of-Things (IoT) devices operate…

Information Theory · Computer Science 2024-12-31 Boxiao Shen , Yongpeng Wu , Wenjun Zhang , Symeon Chatzinotas , Björn Ottersten

The integration of non-terrestrial networks (NTN) into 5G new radio (NR) has opened up the possibility of developing a new positioning infrastructure using NR signals from Low-Earth Orbit (LEO) satellites. Compared to existing Global…

Low Earth orbit (LEO) satellite networks (SatNets) are envisioned to play a crucial role in providing global and ubiquitous connectivity efficiently. Accordingly, in the coming years, thousands of LEO satellites will be launched to create…

Networking and Internet Architecture · Computer Science 2021-06-21 Mohammed Y. Abdelsadek , Halim Yanikomeroglu , Gunes Karabulut Kurt

This paper explores the evolution of Radio Access Network (RAN) architectures and their integration into Non-Terrestrial Networks (NTN) to address escalating mobile traffic demands. Focusing on Low Earth Orbit (LEO) satellites as key…

Networking and Internet Architecture · Computer Science 2024-04-16 Siva Satya Sri Ganesh Seeram , Luca Feltrin , Mustafa Ozger , Shuai Zhang , Cicek Cavdar

A mega-constellation of low-altitude earth orbit (LEO) satellites (SATs) and burgeoning unmanned aerial vehicles (UAVs) are promising enablers for high-speed and long-distance communications in beyond fifth-generation (5G) systems.…

Networking and Internet Architecture · Computer Science 2020-10-21 Ju-Hyung Lee , Jihong Park , Mehdi Bennis , Young-Chai Ko

Multi orbit low earth orbit (LEO) satellites communication is envisioned as a key infrastructure to deliver global coverage, enabling future services from space air ground integrated networks.However, the optimized design of LEO which…

Systems and Control · Electrical Eng. & Systems 2025-11-18 Yingzhuo Sun , Yulan Gao , Ming Xiao , Zhu Han , Octavia A. Dobre

Low Earth Orbit (LEO) satellite communication is a critical component in the development of sixth generation (6G) networks. The integration of massive multiple-input multiple-output (MIMO) technology is being actively explored to enhance…

Signal Processing · Electrical Eng. & Systems 2025-11-03 Huibin Zhou , Xinrui Gong , Christos G. Tsinos , Li You , Xiqi Gao , Björn Ottersten

In this paper, we propose a terrestrial-satellite network (TSN) architecture to integrate the ultra-dense low earth orbit (LEO) networks and the terrestrial networks to achieve efficient data offloading. In TSN, each ground user can access…

Networking and Internet Architecture · Computer Science 2018-11-14 Boya Di , Hongliang Zhang , Lingyang Song , Yonghui Li , Geoffrey Ye Li

The rapid advancement of low Earth orbit (LEO) satellite communication systems has significantly enhanced global connectivity, offering high-capacity, low-latency services crucial for next-generation applications. However, the dense…

Information Theory · Computer Science 2024-11-15 Qianqian Zhang , Ye Hu , Minchae Jung

The integration of non-terrestrial networks (NTN) into 5G new radio (NR) enables a new class of positioning capabilities based on cellular signals transmitted by Low-Earth Orbit (LEO) satellites. In this paper, we investigate joint…

Low Earth orbit (LEO) satellite constellations are emerging as a key enabler of next-generation communications, offering global coverage and significantly lower latency compared to traditional terrestrial networks and geostationary…

Signal Processing · Electrical Eng. & Systems 2025-07-01 Mohammad Taghi Dabiri , Mazen Hasna , Saud Althunibat , Khalid Qaraqe

Low-earth-orbit (LEO) satellite communication systems that use millimeter-wave frequencies rely on large antenna arrays with hybrid analog-digital architectures for rapid beam steering. LEO satellites are only visible from the ground for…

Signal Processing · Electrical Eng. & Systems 2025-11-03 Anders Malthe Westerkam , Amélia Struyf , Dimitri Lederer , Troels Pedersen , François Quitin

Low Earth Orbit (LEO) satellite networks are rapidly gaining traction today. Although several real-world deployments exist, our preliminary analysis of LEO topology performance with the soon-to-be operational Inter-Satellite Links (ISLs)…

Networking and Internet Architecture · Computer Science 2024-09-12 Wenyi Zhang , Zihan Xu , Sangeetha Abdu Jyothi

Resilient routing in large-scale Low Earth Orbit (LEO) satellite networks remains a key challenge due to frequent and unpredictable link and node failures, potentially in response to cybersecurity breaches. While prior work has explored…

Networking and Internet Architecture · Computer Science 2025-09-15 Lyubomir Yanev , Pietro Ronchetti , Joshua Smailes , Martin Strohmeier

Low earth orbit (LEO) satellite communication based on 3GPP standard is seen as a promising solution to rolling out communication services in areas without terrestrial base stations. However, due to the fast movement of satellites and large…

Social and Information Networks · Computer Science 2024-04-16 Jianfeng Zhu , Yaohua Sun , Mugen Peng

Low earth orbit (LEO) satellite plays an indispensable role in the earth network because of its low latency, large capacity, and seamless global coverage. For such an unprecedented extensive irregular system, stochastic geometry (SG) is a…

Information Theory · Computer Science 2021-10-26 Ruibo Wang , Mustafa A. Kishk , Mohamed-Slim Alouini

Snapshot is a fundamental notion proposed for routing in mobile low earth orbit (LEO) satellite networks which is characterized with predictable topology dynamics. Its distribution has a great impact on the routing performance and on-board…

Networking and Internet Architecture · Computer Science 2014-12-23 Zhu Tang , Zhenqian Feng , Wanrong Yu , Baokang Zhao , Chunqing Wu

With the rapid development of satellite communication technologies, the space-based access network has been envisioned as a promising complementary part of the future 6G network. Aside from terrestrial base stations, satellite nodes,…

Signal Processing · Electrical Eng. & Systems 2022-07-26 Zhenyu Xiao , Junyi Yang , Tianqi Mao , Chong Xu , Rui Zhang , Zhu Han , Xiang-Gen Xia