Results 21 to 30 of about 1,814 (156)
Optimization Strategy to Solve Transmission Interruption Caused by Satellite-Ground Link Switching
IEEE Access, 2020 Low earth orbit (LEO) satellite systems, an important part of the next generation of global communication systems, have the advantages of low transmission delay, low satellite cost and low launch cost.
Jirui Zhang +3 more
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Democratizing LEO Satellite Network Measurement
ACM SIGMETRICS Performance Evaluation ReviewLow Earth Orbit (LEO) satellite networks are quickly gaining traction with promises of impressively low latency, high bandwidth, and global reach. However, the research community knows relatively little about their operation and performance in practice. The obscurity is largely due to the high barrier of entry for measuring LEO networks, which requires
Liz Izhikevich +4 more
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Reinforcement Learning for Resource Allocation in LEO Satellite Networks [PDF]
IEEE Transactions on Systems, Man and Cybernetics, Part B (Cybernetics), 2007 In this paper, we develop and assess online decision-making algorithms for call admission and routing for low Earth orbit (LEO) satellite networks. It has been shown in a recent paper that, in a LEO satellite system, a semi-Markov decision process formulation of the call admission and routing problem can achieve better performance in terms of an ...
Usaha, W, Barria, J A
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SatScope: A Data-Driven Simulator for Low-Earth-Orbit Satellite Internet
Future InternetThe rapid development of low-Earth-orbit (LEO) satellite constellations has not only provided global users with low-latency and unrestricted high-speed data services but also presented researchers with the challenge of understanding dynamic changes in ...
Qichen Wang +5 more
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On routing for extending satellite service life in LEO satellite networks [PDF]
2014 IEEE Global Communications Conference, 2014 We address the problem of routing for extending the service life of satellites in Iridium-like LEO constellations. Satellites in LEO constellations can spend over 30% of their time under the earth's umbra, time during which they are powered by batteries. While the batteries are recharged by solar energy, the depth of discharge they reach during eclipse
Hussein, Mohammed +2 more
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Coverage Analysis of LEO Satellite Downlink Networks: Orbital Geometry Dependent Approach
IEEE AccessThe low-Earth-orbit (LEO) satellite network has emerged as a promising technology for providing global coverage with high data rates. However, analyzing the performance of the LEO satellite network is particularly challenging due to its dependence on ...
Junse Lee +3 more
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LEO Satellite Access Network (LEO-SAN) Toward 6G: Challenges and Approaches
IEEE Wireless CommunicationsWith 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, especially the low-earth-orbit (LEO) satellites, can also serve as base stations for Internet access, and constitute the
Xiao, Zhenyu +6 more
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Network Pruning for Extending Satellite Service Life in LEO Satellite Constellations [PDF]
2015 IEEE International Conference on Data Science and Data Intensive Systems, 2015 We address the problem of network pruning for extending the service life of satellites in LEO constellations. Satellites in LEO constellations can spend over 30 % of their time under the earth's umbra, time during which they are powered by batteries.
Hussein, Mohammed +2 more
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Distributed Massive MIMO for LEO Satellite Networks
IEEE Open Journal of the Communications Society, 2022 The ultra-dense deployment of interconnected satellites will characterize future low Earth orbit (LEO) mega-constellations. Exploiting this towards a more efficient satellite network (SatNet), this paper proposes a novel LEO SatNet architecture based on distributed massive multiple-input multiple-output (DM-MIMO) technology allowing ground user ...
Mohammed Y. Abdelsadek +2 more
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Survivability Analysis of LEO Satellite Networks Based on Network Utility
IEEE Access, 2019 The LEO satellite network is threatened by accidental faults, malicious attacks and other factors during its operation. This paper proposed a model of survivability evaluation based on network utility.
Yuanyuan Nie, Zhigeng Fang, Su Gao
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