Beam signal tracking method, device and system
A beam signal tracking method, device, and system, where the method includes obtaining a Doppler frequency shift of a receive-beam signal, determining a Doppler frequency shift change speed of the receive-beam signal according to the Doppler frequency shift, determining a scanning speed and a scanning angle step size of the receive-beam signal according to the Doppler frequency shift change speed, scanning the receive-beam signal according to the scanning speed and the scanning angle step size, determining a beam angle that is formed when the receive-beam signal is aligned with a transmit-beam signal, determining phase configuration information of a phase shifter according to the beam angle that is formed when the receive-beam signal is aligned with the transmit-beam signal, and configuring the phase shifter according to the phase configuration information of the phase shifter such that the receive-beam signal is aligned with the transmit-beam signal.
1. A computer program product comprising computer-executable instructions for storage on a non-transitory computer-readable medium that, when executed by a processor, cause an apparatus to:
obtain a Doppler frequency shift of a receive-beam signal;
determine a Doppler frequency shift change speed of the receive-beam signal according to the Doppler frequency shift;
determine a scanning speed and a scanning angle step size of the receive-beam signal according to the Doppler frequency shift change speed;
scan the receive-beam signal according to the scanning speed and the scanning angle step size;
determine a beam angle formed when the receive-beam signal is aligned with a transmit-beam signal, wherein the beam angle corresponds to a maximum power of the receive-beam signal;
determine phase configuration information of a phase shifter according to the beam angle; and
configure the phase shifter according to the phase configuration information of the phase shifter such that the receive-beam signal is aligned with the transmit-beam signal.
2. The computer program product of claim 1 , wherein the computer-executable instructions cause the apparatus to determine the scanning speed and the scanning angle step size by:
performing normalization processing on the Doppler frequency shift change speed; and
determining the scanning speed and the scanning angle step size according to the normalized Doppler frequency shift change speed.
3. The computer program product of claim 2 , wherein the computer-executable instructions cause the apparatus to determine the scanning speed and the scanning angle step size by:
increasing the scanning speed and the scanning angle step size when the normalized Doppler frequency shift change speed increases;
decreasing the scanning speed and the scanning angle step size when the normalized Doppler frequency shift change speed decreases; and
maintaining the scanning speed and the scanning angle step size when the normalized Doppler frequency shift change speed remains unchanged.
4. The computer program product of claim 1 , wherein the computer-executable instructions cause the apparatus to determine the Doppler frequency shift change speed of the receive-beam signal by calculating a gradient value of the Doppler frequency shift of the receive-beam signal to obtain the Doppler frequency shift change speed.
5. The computer program product of claim l e wherein the computer-executable instructions cause the apparatus to determine the Doppler frequency shift change speed of the receive-beam signal by calculating a derivative value of the Doppler frequency shift of the receive-beam signal to obtain the Doppler frequency shift change speed.
6. The computer program product of claim 1 , wherein the computer-executable instructions cause the apparatus to determine the Doppler frequency shift change speed of the receive-beam signal by:
calculating a gradient value and a derivative value of the Doppler frequency shift of the receive-beam signal; and
calculating an average value of the gradient value and the derivative value of the Doppler frequency shift of the receive-beam signal to obtain the Doppler frequency shift change speed.
7. The computer program product of claim 1 , wherein the apparatus comprises a beam signal tracking apparatus.
8. The computer program product of claim 1 , wherein the apparatus comprises a communications device.
9. A beam signal tracking apparatus, comprising:
a memory comprising instructions; and
a processor coupled to the memory, wherein the instructions cause the processor to be configured to:
obtain a Doppler frequency shift of a receive-beam signal;
determine a Doppler frequency shift change speed of the receive-beam signal according to the Doppler frequency shift;
determine a scanning speed and a scanning angle step size of the receive-beam signal according to the Doppler frequency shift change speed;
scan the receive-beam signal according to the scanning speed and the scanning angle step size;
determine a beam angle formed when the receive-beam signal is aligned with a transmit-beam signal, wherein the beam angle corresponds to a maximum power of the receive-beam signal;
determine phase configuration information of a phase shifter according to the beam angle; and
configure the phase shifter according to the phase configuration information of the phase shifter such that the receive-beam signal is aligned with the transmit-beam signal.
10. The beam signal tracking apparatus of claim 9 , wherein the instructions further cause the processor to he configured to:
perform normalization processing on the Doppler frequency shift change speed; and
determine the scanning speed and the scanning angle step size according to the normalized Doppler frequency shift change speed.
11. The beam signal tracking apparatus of claim 10 , wherein the instructions further cause the processor to be configured to:
increase the scanning speed and the scanning angle step size when the normalized Doppler frequency shift change speed increases;
decrease the scanning speed and the scanning angle step size when the normalized Doppler frequency shift change speed decreases; and
maintain the scanning speed and the scanning angle step size when the normalized Doppler frequency shift change speed remains unchanged.
12. The beam signal tracking apparatus of claim 9 , wherein the instructions further cause the processor to be configured to calculate a gradient value of the Doppler frequency shift to obtain the Doppler frequency shift change speed.
13. The beam signal tracking apparatus of claim 9 , wherein the instructions further cause the processor to be configured to calculate a derivative value of the Doppler frequency shift to obtain the Doppler frequency shift change speed.
14. The beam signal tracking apparatus of claim 9 , wherein the instructions further cause the processor to be configured to:
calculate a gradient value and a derivative value of the Doppler frequency shift; and
calculate an average value of the gradient value and the derivative value of the Doppler frequency shift to obtain the Doppler frequency shift change speed.
15. A communications device, comprising:
a transceiver antenna array;
a phase shifter coupled to each antenna in the transceiver antenna array;
a memory coupled to the phase shifter; and
a processor coupled to the memory and configured to:
obtain a Doppler frequency shift of a receive-beam signal;
determine a Doppler frequency shift change speed of the receive-beam signal according to the Doppler frequency shift;
determine a scanning speed and a scanning angle step size of the receive-beam signal according to the Doppler frequency shift change speed;
scan the receive-beam signal according to the scanning speed and the scanning angle step size;
determine a beam angle formed when the receive-beam signal is aligned with a transmit-beam signal, wherein the beam angle corresponds to a maximum power of the receive-beam signal;
determine phase configuration information of the phase shifter according to the beam angle; and
configure the phase shifter according to the phase configuration information of the phase shifter such that the receive-beam signal is aligned with the transmit-beam signal.
16. The communications device of claim 15 , wherein the processor is further configured to:
perform normalization processing on the Doppler frequency shift change speed; and
determine the scanning speed and the scanning angle step size according to the normalized Doppler frequency shift change speed.
17. The communications device of claim 16 , wherein the processor is further configured to:
increase the scanning speed and the scanning angle step size when the normalized Doppler frequency shift change speed increases;
decrease the scanning speed and the scanning angle step size when the normalized Doppler frequency shift change speed decreases; and
maintain the scanning speed and the scanning angle step size when the normalized Doppler frequency shift change speed remains unchanged.
18. The communication device of claim 15 , wherein the processor is further configured to calculate a gradient value of the Doppler frequency shift to obtain the Doppler frequency shift change speed.
19. The communications device of claim 15 , wherein the processor is further configured to calculate a derivative value of the Doppler frequency shift to obtain the Doppler frequency shift change speed.
20. The communications device of claim 15 , wherein the processor is further configured to:
calculate a gradient value and a derivative value of the Doppler frequency shift; and
calculate an average value of the gradient value and the derivative value of the Doppler frequency shift to obtain the Doppler frequency shift change speed.