Patent ID: 11949488
Assignee: ZTE CORPORATION
Field: Telecommunications (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 20:
21. A method for realizing beam alignment, comprising:
in response to a reception of first signals with effective signal strengths through a first group of analog subarrays, a second group of the analog subarrays and a third group of the analog subarrays by adopting receiving beams having a same beam direction, acquiring the first signals received by the first group of the analog subarrays, the first signals received by the second group of the analog subarrays, the first signals received by the third group of the analog subarrays, a difference between phase centers of two analog subarrays in the first group of the analog subarrays, a difference between phase centers of two analog subarrays in the second group of the analog subarrays, and a difference between phase centers of two analog subarrays in the third group of the analog subarrays; wherein each of the first, second and third group of the analog subarrays comprises two analog subarrays with a same polarization mode;
keeping the beam directions of the receiving beams of the first group of the analog subarrays, the second group of the analog subarrays and the third group of the analog subarrays unchanged, performing a change of the difference between the phase centers of the first group of the analog subarrays, acquiring second signals received by the first group of the analog subarrays and the difference between the phase centers after change of the first group of the analog subarrays, performing a change of the difference between the phase centers of the second group of the analog subarrays, acquiring second signals received by the second group of the analog subarrays and the difference between the phase centers after change of the second group of the analog subarrays, and performing a change of the difference between the phase centers of the third group of the analog subarrays, acquiring second signals received by the third group of the analog subarrays and the difference between the phase centers after change of the third group of the analo g subarrays; and
estimating a Direction Of Arrival (DOA) of a receiving signal, and directing a center of a receiving beam to the estimated DOA, according to the first signals and the second signals received by the first group of the analog subarrays, the difference between the phase centers before change and the difference between the phase centers after change of the first group of the analog subarrays, the first signals and the second signals received by the second group of the analog subarrays, the difference between the phase centers before change and the difference between the phase centers after change of the second group of the analog subarrays, the first signals and the second signals received by the third group of the analog subarrays, the difference between the phase centers before change and the difference between the phase centers after change of the third group of the analog subarrays.