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arXiv · 2412.08250

Fast Beam Placement for Ultra-Dense LEO Networks

Trinh Van Chien·Nguyen Minh Quan·Tri Nhu Do·Cuong Le·Tan N. Nguyen·Symeon Chatzinotas
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Abstract

Low Earth orbit (LEO) satellites has brought about significant improvements in wireless communications, characterized by low latency and reduced transmission loss compared to geostationary orbit (GSO) satellites. Ultra-dense LEO satellites can serve many users by generating active beams effective to their locations. The beam placement problem is challenging but important for efficiently allocating resources with a large number of users. This paper formulates and solves a fast beam placement optimization problem for ultra-dense satellite systems to enhance the link budget with a minimum number of active beams (NABs). To achieve this goal and balance load among beams within polynomial time, we propose two algorithms for large user groups exploiting the modified K-means clustering and the graph theory. Numerical results illustrate the effectiveness of the proposals in terms of the statistical channel gain-to-noise ratio and computation time over state-of-the-art benchmarks.

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Trinh Van Chien, Nguyen Minh Quan, Tri Nhu Do, Cuong Le, Tan N. Nguyen, Symeon Chatzinotas. 2024-12-11. Fast Beam Placement for Ultra-Dense LEO Networks. https://arxiv.org/abs/2412.08250

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