Patent ID: 9092311
Filing Date: 2015-07-28
Classification: G05D,G06F,G08G

Abstract:
1. A vehicular wireless communication apparatus disposed in a subject vehicle, the subject vehicle cooperating with a different vehicle that includes a different vehicular wireless communication apparatus being identical in function to the vehicular wireless communication apparatus in the subject vehicle, the vehicular wireless communication apparatus comprising: a position acquisition portion that acquires continuously a position information-item of the subject vehicle; a transmission portion that transmits a vehicle information-set including a locus information-set that includes past and present position information-items of the subject vehicle, continuously via vehicle-to-vehicle communication; a reception portion that receives a vehicle information-set including a locus information-set that includes past and present position information-items of the different vehicle, from the different vehicular wireless communication apparatus in the different vehicle: 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 (i) the past locus of the subject vehicle determined by the subject-vehicle locus determination section and (ii) the locus information-set of the different vehicle received by the reception portion, whether the different vehicle is a rear 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 different vehicle is determined to be the rear vehicle, a transmission information control section that controls the transmission portion to transmit the locus information-set of the subject vehicle when the different 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, wherein: the necessary-position determination section selects the necessary-position information-item, from among a plurality of past position information-items of the subject vehicle continuously acquired by the position acquisition portion; the necessary-position determination section selects, from among the plurality of past position information-items of the subject vehicle, nearby position information-items of n points near a present position of the rear vehicle, the necessary-position determination section determines the nearby position information-items of the n points as the necessary-position information-item.