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

Claim 2:
3. A method of controlling an antenna control device including an antenna controller configured to set weight values to be superposed on transmission/reception signals are set to form radiation patterns using a plurality of antennas and superpose the weight values on the transmission/reception signals, the method comprising:
detecting arrival directions of the reception signals;
calculating distribution information of the detected arrival directions;
calculating signal quality information of each of the radiation patterns; and
selecting a radiation pattern on the basis of the distribution information and the signal quality information and setting the weight values corresponding to the selected radiation pattern in the antenna controller,
wherein, in the detecting of the arrival directions, a process of estimating angles of the arrival directions of the reception signals is repeated a specific number of times,
in the calculating of the distribution information, information related to reception levels at the angles of the arrival directions of the reception signals estimated through the repeated estimation are accumulated and distribution information of the arrival directions of the radio waves is calculated from the accumulated information,
in the calculating of the signal quality information, signal quality information of each of candidates for the radiation pattern is calculated; and
in the selecting of the radiation pattern,
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 is selected among the candidates.