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A spectrum-sharing satellite-ground integrated network is conceived,consisting of a pair of non-geostationary orbit (NGSO) constellations andmultiple terrestrial base stations, which impose the co-frequency interference(CFI) on each other. The CFI may increase upon increasing the number ofsatellites. To manage the potentially severe interference, we propose to relyon joint multi-domain resource aided interference management (JMDR-IM).Specifically, the coverage overlap of the constellations considered isanalyzed. Then, multi-domain resources - including both the beam-domain andpower-domain - are jointly utilized for managing the CFI in an overlappingcoverage region. This joint resource utilization is performed by relying on ourspecifically designed beam-shut-off and switching based beam scheduling, aswell as on long short-term memory based joint autoregressive moving averageassisted deep Q network aided power scheduling. Moreover, the outageprobability (OP) of the proposed JMDR-IM scheme is derived, and the asymptoticanalysis of the OP is also provided. Our performance evaluations demonstratethe superiority of the proposed JMDR-IM scheme in terms of its increasedthroughput and reduced OP.

Interference Management by Harnessing Multi-Domain Resources in Spectrum-Sharing Aided Satellite-Ground Integrated Networks