VEHICULAR WIRELESS COMMUNICATION APPARATUS
First Claim
1. A vehicular wireless communication apparatus disposed in a subject vehicle, comprising:
- a position acquisition portion that acquires continuously a position information-item;
a communication portion that transmits and receives a vehicle information-set, which includes a locus information-set continuously via vehicle-to-vehicle communication;
a subject-vehicle locus determination section that determines a past locus of the subject vehicle from a plurality of position information-items of the subject vehicle continuously acquired by the position acquisition portion;
a rear vehicle determination section that determines, based on the locus information-set received from another vehicle by the communication portion, whether the another vehicle is a rear vehicle, which is located at back of the subject vehicle and within a predetermined range from the past locus of the subject vehicle;
a necessary-position determination section that determines a necessary-position information-item based on the plurality of position information-items of the subject vehicle when the another vehicle is determined to be the rear vehicle, the necessary-position information-item being necessary for the rear vehicle when the rear vehicle obtains a position relation with the subject vehicle; and
a transmission information control section that controls the communication portion to transmit the locus information-set of the subject vehicle when the another vehicle is determined to be the rear vehicle such that the locus information-set of the subject vehicle includes (i) a present position information-item of the subject vehicle and (ii) the necessary-position information-item determined by the necessary-position determination section.
1 Assignment
0 Petitions
Accused Products
Abstract
In a vehicular wireless communication apparatus in a subject vehicle, a rear vehicle determination process determines whether another vehicle is a rear vehicle within a predetermined range based on a past locus of the subject vehicle determined by a subject-vehicle locus determination process, and a locus information-set of the another vehicle received by a wireless communication portion. When the another vehicle is determined to be the rear vehicle, a necessary-position determination process determines position information-items of two end points of a line segment of the past locus of the subject vehicle which intersects with a perpendicular line drawn from a present position of the another vehicle. A simple transmission process transmits a locus information-set including (i) a present position information-item of the subject vehicle and (ii) the necessary-position information-item determined in the necessary-position determination process, from the wireless communication portion.
14 Citations
12 Claims
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1. A vehicular wireless communication apparatus disposed in a subject vehicle, comprising:
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a position acquisition portion that acquires continuously a position information-item; a communication portion that transmits and receives a vehicle information-set, which includes a locus information-set continuously via vehicle-to-vehicle communication; a subject-vehicle locus determination section that determines a past locus of the subject vehicle from a plurality of position information-items of the subject vehicle continuously acquired by the position acquisition portion; a rear vehicle determination section that determines, based on the locus information-set received from another vehicle by the communication portion, whether the another vehicle is a rear vehicle, which is located at back of the subject vehicle and within a predetermined range from the past locus of the subject vehicle; a necessary-position determination section that determines a necessary-position information-item based on the plurality of position information-items of the subject vehicle when the another vehicle is determined to be the rear vehicle, the necessary-position information-item being necessary for the rear vehicle when the rear vehicle obtains a position relation with the subject vehicle; and a transmission information control section that controls the communication portion to transmit the locus information-set of the subject vehicle when the another vehicle is determined to be the rear vehicle such that the locus information-set of the subject vehicle includes (i) a present position information-item of the subject vehicle and (ii) the necessary-position information-item determined by the necessary-position determination section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification