LTE system-based satellite mobile communication uplink transmitting terminal timing adjustment method
A satellite mobile communication and timing adjustment technology, which is applied in the field of broadband satellite communication and navigation, can solve the problems of high first-time success rate requirements for users, easy to be affected by Doppler frequency shift, increase resource consumption of communication system, etc., so as to solve the problem of preamble sequence Design and detect problems, improve the first-time success rate, and improve the effect of signal transmission efficiency
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[0025] Embodiment 1: as figure 1 As shown, this embodiment provides a timing adjustment method for a multi-beam satellite LTE uplink transmitting end, including the following steps,
[0026] S1: In a beam projected by a satellite to the ground, a certain first ground terminal UE determines its own position information through its own satellite positioning function (such as GPS, Beidou, Galileo, this embodiment takes GPS as an example), the position Information includes, but is not limited to, longitude, latitude, and altitude. Specifically, the ground terminal refers to a processing device for communicating with the satellite within the coverage beam range of the satellite, the several ground terminals access the satellite with improved LTE, and the first ground terminal A terminal UE refers to any one of several ground terminals.
[0027] S2: The first ground terminal UE acquires data such as the latest satellite ephemeris by receiving the pilot signal transmitted by the sa...
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