Patent ID: 7672270
Filing Date: 2010-03-02
Classification: G08G,H04B,H04W

Abstract:
1. A system of communication among moving vehicles by means of a wireless network, the system comprising: a direction determining unit that uses a moving direction of a first vehicle to assign a first direction code to a first message, wherein the first direction code classifies the moving direction of the first vehicle into one direction area of at least four possible direction areas; a selection unit connected to the direction determining unit that selects a communication channel based upon the first direction code; a plurality of directional antennas that broadcast the first message with the first direction code from the first vehicle to a second vehicle and receive a second message over the selected communication channel with a second direction code sent from the second vehicle to the first vehicle, wherein the plurality of directional antennas ignore the second message when the second direction code does not match the direction code currently assigned to the first message.