Patent ID: 7355525
Filing Date: 2008-04-08
Classification: G08G,H01Q

Abstract:
1. A vehicle communication system comprising: a host vehicle two way communication device configured to conduct short range communications in a host vehicle broadcast area surrounding a host vehicle equipped with the vehicle communication system; an omni-directional antenna operatively coupled to the host vehicle two way communication device to conduct short range communications in the host vehicle broadcast area surrounding the host vehicle; a bi-directional antenna operatively coupled to the host vehicle two way communication device to conduct short range communications in the broadcast area surrounding the host vehicle; a vehicle positioning component configured to determine a host vehicle position of the host vehicle; a vehicle map component including road data with roads being classified by at least one of a road segment attribute; and a vehicle broadcast power modulating component configured to selectively vary broadcast power of the omni-directional antenna and broadcast power of the bi-directional antenna based on the road segment attribute of a road on which the host vehicle is traveling on as determined by the vehicle positioning component.