Patent ID: 11910282
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Measurement (Instruments)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A roadside communication device connected to a first antenna used for communications with an on-board unit, and to a second antenna used for estimating angles of arrival of radio waves, the roadside communication device comprising:
processing circuitry
to detect a receive strength of a radio wave received via the first antenna from a first on-board unit;
to estimate an angle of arrival and a receive strength of a direct wave and an angle of arrival and a receive strength of a reflected wave, the direct wave and the reflected wave being included in one or more radio waves received via the second antenna from one or more on-board units; and
to determine whether or not to enable communications with the first on-board unit, using the first antenna, on a basis of the detected receive strength, and the estimated angles of arrival and the estimated receive strengths of the direct and reflected waves of the one or more radio waves,
wherein if the detected receive strength exceeds a reference value, and if the estimated angle of arrival of either the direct wave or reflected wave of the radio wave shows an arrival from a communication area, then the processing circuitry determines that communications with the first on-board unit are enabled.