Satellite communication system uplink timing advance gateway station prediction method
A technology of timing advance and prediction method, which is applied in the field of satellite communication, can solve problems such as terminal transmission synchronization tracking, and achieve the effect of ensuring uplink synchronization performance, low complexity, and low resource occupation
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[0021] The invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0022] The present invention proposes a satellite communication system uplink timing advance amount gateway station prediction method, which is suitable for the scene where the ground terminal communicates with the ground gateway station through the satellite, and realizes the uplink between multiple terminals within the coverage range of a satellite beam Sync tracking.
[0023] The transmission timing of the satellite communication system is as follows: figure 2 shown.
[0024] T 0 Time: the time when the terminal at the center of the beam that has achieved random access sends the uplink signal in a timing advance manner.
[0025] T 01 Moment: T 0 The uplink signal is sent at all times to arrive at the satellite time.
[0026] T 1 Moment: T 0 Send the uplink signal to reach the gateway station at all times.
[0027] T 2 Time: The moment when the gat...
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