The invention provides an NTN
feeder line link time delay parameter determination method and device, a
base station and a storage medium, and the method comprises the steps: solving
satellite-ground distances corresponding to a plurality of sample moments of a detection time period according to
ephemeris information and epoch time corresponding to the detection time period by the
base station; according to the method, the fitting coefficient of the distance
time function corresponding to the detection time period is determined by performing
curve fitting on the
satellite-ground distance, and the public time
delay parameter is determined according to the fitting coefficient, so that the accuracy and the efficiency of determining the public time
delay parameter are improved; therefore, the user terminal can accurately estimate the public time delay of the
feeder line link according to the public time delay parameter and perform corresponding timing compensation,
signal synchronization is ensured, and the technical problem that the
base station cannot accurately determine the public time delay parameter in the prior art is solved. In addition, the variation trend of the
satellite-to-ground distance in a long time period can be determined according to the calculation of fewer sample points, and the accuracy of time delay evaluation is ensured with lower operation overhead.