Patent ID: 11876301
Assignee: HITACHI KOKUSAI ELECTRIC INC.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An antenna control device including an antenna controller configured to set weight values to be superposed on transmission/reception signals to form radiation patterns using a plurality of antennas and superpose the weight values on the transmission/reception signals, the antenna control device comprising:
an arrival direction detector configured to detect arrival directions of the reception signals;
a distribution information calculator configured to calculate distribution information of the detected arrival directions;
a signal quality calculator configured to calculate signal quality information of each of the radiation patterns; and
a radiation pattern selector configured to select a radiation pattern on a basis of the distribution information and the signal quality information and set the weight values corresponding to the selected radiation pattern in the antenna controller,
wherein the arrival direction detector repeats a process of estimating angles of the arrival directions of the reception signals a specific number of times,
the distribution information calculator accumulates information related to reception levels at the angles of the arrival directions of the reception signals estimated through the repeated estimation and calculates distribution information of the arrival directions of the radio waves from the accumulated information,
the signal quality calculator calculates signal quality information of each of candidates for the radiation pattern, and
the radiation pattern selector selects, among the candidates, the radiation pattern that has a highest value obtained by adding a magnitude of a variance of sub-scores for respective beams in each of the candidates for the radiation pattern to a score obtained by superposing the distribution information of the arrival directions on each of the candidates for the radiation pattern according to the signal quality information and performing summation on each of the distribution information superposed candidates.