A spectrum-sharing satellite-ground integrated network is conceived, consisting of a pair of non-geostationary orbit (NGSO) constellations and multiple terrestrial base stations, which impose the co-frequency interference (CFI) on each other. The CFI may increase upon increasing the number of satellites. To manage the potentially severe interference, we propose to rely on joint multi-domain resource aided interference management (JMDR-IM). Specifically, the coverage overlap of the constellations considered is analyzed. Then, multi-domain resources - including both the beam-domain and power-domain - are jointly utilized for managing the CFI in an overlapping coverage region. This joint resource utilization is performed by relying on our specifically designed beam-shut-off and switching based beam scheduling, as well as on long short-term memory based joint autoregressive moving average assisted deep Q network aided power scheduling. Moreover, the outage probability (OP) of the proposed JMDR-IM scheme is derived, and the asymptotic analysis of the OP is also provided. Our performance evaluations demonstrate the superiority of the proposed JMDR-IM scheme in terms of its increased throughput and reduced OP.

翻译：提出了一种频谱共享的卫星-地面综合网络架构，该网络包含一对非地球同步轨道（NGSO）星座及多个地面基站，彼此间会产生同频干扰（CFI）。随着卫星数量的增加，CFI可能加剧。为管控潜在严重干扰，我们提出基于联合多域资源辅助的干扰管理（JMDR-IM）方案。具体而言，首先分析了所考虑星座的覆盖重叠区域；随后，联合利用波束域与功率域等多域资源，在重叠覆盖区域内进行CFI管控。该联合资源利用通过我们专门设计的波束关闭与切换的波束调度，以及基于长短期记忆的联合自回归滑动平均辅助深度Q网络的功率调度来实现。此外，推导了所提JMDR-IM方案的中断概率（OP），并给出了OP的渐近分析。性能评估表明，所提JMDR-IM方案在提升吞吐量并降低中断概率方面具有优越性。