US 2026/0143353 A1 · WIRELESS SIGNAL RECEPTION DEVICE AND RECEIVING METHOD OF WIRELESS SIGNAL

Abstract

A receiving method of a wireless signal performed by a wireless signal reception device includes: receiving the pilot signal and the velocity of the UAV by the antenna; performing a ground downlink signal reception and synchronization algorithm, including steps as follows: according to the position of the UAV, the position of the antenna and the transmission direction of the pilot signal, calculating an AoA; according to the frequency of the pilot signal, the velocity of the UAV and the AoA, calculating a doppler frequency shift; according to the doppler frequency shift, adjusting the frequency of the pilot signal; according to the preset time point corresponding to the pilot signal, adjusting the present time point of the pilot signal in a data symbol; according to the adjusted present time point, adjusting the sampling time point of the pilot signal. By the foregoing method, the doppler frequency shift is modified.

Claims15

Dependent claims

A wireless signal reception device, disposed on a ground and communicating with a UAV, comprising:

an antenna receiving a pilot signal and a velocity of the UAV;
a processor electrically connected to the antenna and performing a ground downlink signal reception and synchronization algorithm, wherein the ground downlink signal reception and synchronization algorithm comprises steps as follows:
according to a position of the UAV, a position of the antenna and a transmission direction of the pilot signal, calculating an angle of arrival;
according to a frequency of the pilot signal, the velocity of the UAV and the angle of arrival, calculating a doppler frequency shift;
according to the doppler frequency shift, adjusting the frequency of the pilot signal;
according to a preset time point corresponding to the pilot signal, adjusting a present time point of the pilot signal in a data symbol;
and
according to the adjusted present time point, adjusting a sampling time point of the data symbol.

5 more elements

A receiving method of a wireless signal, for a wireless signal reception device which comprises an antenna and a processor, is disposed on a ground and communicates with a UAV by the antenna, performed by the processor and comprising:

receiving a pilot signal and a velocity of the UAV by the antenna;
performing a ground downlink signal reception and synchronization algorithm, wherein the ground downlink signal reception and synchronization algorithm comprises steps as follows:
according to a position of the UAV, a position of the antenna and a transmission direction of the pilot signal, calculating an angle of arrival;
according to a frequency of the pilot signal, the velocity of the UAV and the angle of arrival, calculating a doppler frequency shift;
according to the doppler frequency shift, adjusting the frequency of the pilot signal;
according to a preset time point corresponding to the pilot signal, adjusting a present time point of the pilot signal in a data symbol;
and
according to the adjusted present time point, adjusting a sampling time point of the data symbol.

5 more elements

Dependencies are inferred from the claim text.

Wireless signal reception device and receiving method of wireless signal

Life of this patent

Wireless signal reception device and receiving method of wireless signal

Life of this patent

Abstract

Claims15