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Rethinking LEO constellations routing

International Journal of Satellite Communications and Networking
Summary This study investigates the unsplittable multicommodity flow (UMCF) as a routing algorithm for LEO constellations. Usually, LEO routing schemes enable the Floyd–Warshall algorithm (shortest path) to minimize the end‐to‐end latency of the flows crossing the constellation. We propose to solve the UMCF problem associated with the
Emmanuel Lochin
exaly   +4 more sources

On-Board Federated Learning for Dense LEO Constellations [PDF]

ICC 2022 - IEEE International Conference on Communications, 2022
Mega-constellations of small-size Low Earth Orbit (LEO) satellites are currently planned and deployed by various private and public entities. While global connectivity is the main rationale, these constellations also offer the potential to gather immense amounts of data, e.g., for Earth observation. Power and bandwidth constraints together with motives
Nasrin Razmi, Bho Matthiesen, Armin Dekorsy, Petar Popovski   +3 more
openaire   +4 more sources

LEO Mega Constellations: Review of Development, Impact, Surveillance, and Governance

Space: Science & Technology, 2022
The rapid development of Low Earth Orbit (LEO) mega constellations has significantly contributed to several aspects of human scientific progress, such as communication, navigation, and remote sensing.
Han Cai, Jingrui Zhang, Yifan Cai
exaly   +2 more sources

Satellite-enabled LTE systems in LEO constellations [PDF]

2017 IEEE International Conference on Communications Workshops (ICC Workshops), 2017
LTE-based satellite systems in LEO constellations are a promising solution for extending broadband coverage to areas not connected to a terrestrial infrastructure. However, the large delays and Doppler shifts over the satellite channel pose severe technical challenges to a traditional LTE system.
Alessandro Guidotti, Alessandro Vanelli-Coralli, Màrius Caus, Joan Bas, Giulio Colavolpe, Tommaso Foggi, Stefano Cioni, Andrea Modenini, Daniele Tarchi   +8 more
openaire   +7 more sources

Improved PPP Ambiguity Resolution with the Assistance of Multiple LEO Constellations and Signals

Remote Sensing, 2019
The fusion of low earth orbit (LEO) constellation and Global Navigation Satellite Systems (GNSS) can increase the number of visible satellites and optimize spatial geometry, which is expected to improve the performance of precise point positioning (PPP ...
Xin Li, Xingxing Li, Fujian Ma, Yongqiang Yuan, Keke Zhang, Feng Zhou, Xiaohong Zhang   +6 more
doaj   +2 more sources

Navigation Resource Allocation Algorithm for LEO Constellations Based on Dynamic Programming

Remote Sensing
Navigation resource allocation for low-earth-orbit (LEO) constellations refers to the optimal allocation of navigational assets when the number and allocation of satellites in the LEO constellation have been determined.
Sixin Wang, Xiaomei Tang, Jingyuan Li, Xinming Huang, Jiyang Liu, Jian Liu   +5 more
doaj   +2 more sources

Design and Evaluation of Reconfigurable SDN LEO Constellations [PDF]

IEEE Transactions on Network and Service Management, 2020
In the context of the 5G ecosystem, the integration between the terrestrial and satellite networks is envisioned as a potential approach to further enhance the network capabilities. In light of this integration, the satellite community is revisiting its role in the next generation 5G networks.
Arled Papa, Tomaso de Cola, Petra Vizarreta, Mu He, Carmen Mas Machuca, Wolfgang Kellerer   +5 more
openaire   +3 more sources

LEO Small-Satellite Constellations for 5G and Beyond-5G Communications

IEEE Access, 2020
The next frontier towards truly ubiquitous connectivity is the use of Low Earth Orbit (LEO) small-satellite constellations to support 5G and Beyond-5G (B5G) networks. Besides enhanced mobile broadband (eMBB) and massive machine-type communications (mMTC),
Petar Popovski, Bho Matthiesen, Armin Dekorsy   +2 more
exaly   +3 more sources

A Scalable Solution for Node Mobility Problems in NDN-Based Massive LEO Constellations [PDF]

Sensors
In recent years, there has been increasing investment in the deployment of massive commercial Low Earth Orbit (LEO) constellations to provide global Internet connectivity.
Miguel Rodríguez Pérez, Sergio Herrería Alonso, José Carlos López Ardao, Andrés Suárez González   +3 more
doaj   +2 more sources

Integration of Satellites in 5G through LEO Constellations [PDF]

GLOBECOM 2017 - 2017 IEEE Global Communications Conference, 2017
The standardization of 5G systems is entering in its critical phase, with 3GPP that will publish the PHY standard by June 2017. In order to meet the demanding 5G requirements both in terms of large throughput and global connectivity, Satellite Communications provide a valuable resource to extend and complement terrestrial networks.
KODHELI, OLTJON, Alessandro Guidotti, Alessandro Vanelli-Coralli   +2 more
openaire   +5 more sources