Scheduling method and device of satellite communication system and storage medium

The embodiment of the invention provides a scheduling method and device for a satellite communication system and a storage medium, and the method comprises the steps: determining the number of repeated transmissions based on the round-trip time RTT of a terminal and the maximum HARQ process number which can be used by the terminal if the number of scheduled users in a current network is determined to be smaller than a first preset threshold value; and determining a scheduling value of a modulation and coding strategy MCS level based on the repeated transmission times and the type of the service currently performed by the terminal. According to the scheduling method and device of the satellite communication system and the storage medium provided by the embodiment of the invention, the number of scheduled users in the current network, the SNR, the RTT, the maximum HARQ process number capable of being used by the terminal and the current service are comprehensively considered, the number of repeated transmission