A timing advance calculation method for Low Earth Orbit satellite communication
As an important supplement to the terrestrial network,the Low Earth Orbit(LEO)satellite network is an important part of the future earth-earth integrated network.However,due to the high moving speed of LEO satellites and the long propagation distance of satellite-ground communication,large propagation delay is caused,therefore a new calculation strategy for the Timing Advance(TA)of the uplink in the satellite-ground communication background of LEO satellites is needed.Based on the satellite-earth communication scenario of LEO satellite,TA and its provisions in the protocol are introduced firstly.Then,according to the characteristics of LEO satellite,a timing advance calculation method of LEO satellite communication is proposed.The effectiveness of the proposed scheme is verified by simulation analysis,which provides a reference for the design of satellite-earth communication system of LEO satellite.
LEO satellitespace-ground communicationTiming Advancecalculation methodneural network
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