상세정보
학술지
Dynamic Downlink Interference Management in LEO Satellite Networks Without Direct Communications
- 발행일
- 202303
- 출처
- IEEE Access, v.11, pp.24137-24148
- ISSN
- 2169-3536
- 출판사
- IEEE
- 협약과제
- 22HH3900, 비정지궤도 위성망 주파수 간섭 평가/공유 기술 개발, 오대섭
- 초록
- 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 제안 키워드
- 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
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