ETRI-Knowledge Sharing Plaform

KOREAN
논문 검색
Type SCI
Year ~ Keyword

Detail

Journal Article Dynamic Downlink Interference Management in LEO Satellite Networks Without Direct Communications
Cited 2 time in scopus Download 230 time Share share facebook twitter linkedin kakaostory
Authors
Jihyeon Yun, Taegun An, Haesung Jo, Bon-Jun Ku, Daesub Oh, Changhee Joo
Issue Date
2023-03
Citation
IEEE Access, v.11, pp.24137-24148
ISSN
2169-3536
Publisher
IEEE
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1109/ACCESS.2023.3253870
Project Code
22HH3900, Development of the spectrum utilizaiotn technology for non-geostationary satellite orbit system, Oh Dae Sub
Abstract
We investigate effective interference management for Low Earth Orbit (LEO) satellite networks that provide downlink services to ground users and share the same frequency spectrum range. Since there are multi-group LEO satellites with different constellation orbits, the ground users will experience time-varying interference due to the overlapping of main/side lobes of the satellite beams, which becomes even more challenging when the interfering satellites cannot communicate directly. To address the problem, we consider two LEO satellite groups that provide communication service in the same ground area, while competing for communication resources. We develop solutions that maximize the throughput and manage the time-varying interference under a certain level, without explicit message exchanges between the satellite groups. By exploiting statistical learning and deep reinforcement learning techniques, we develop learning-based resource allocation schemes and evaluate their performance through extensive simulations. We show their effectiveness under different reward settings and different interference managements, and demonstrate that a Deep Q-Network (DQN)-based scheme can achieve the close-to-optimal performance.
KSP Keywords
Communication resources, Communication services, Deep Q-Network, Deep reinforcement learning, Direct Communication, Frequency spectrum, LEO Satellite Networks, Learning-based, Low earth orbit (LEO) satellite, Reinforcement Learning(RL), Statistical Learning
This work is distributed under the term of Creative Commons License (CCL)
(CC BY NC ND)
CC BY NC ND