Reliable vehicle-to-vehicle communication using spectrum environment map

Recently, the autonomous vehicle technologies, in which a vehicle has autonomous drive function without driver, have attracted attention. Vehicle-to-Vehicle (V2V) and Vehicle-to-Infrastructure (V2I) communications can be used for cooperation among vehicles or between a roadside unit and vehicles for realizing cooperated autonomous vehicles. However, since vehicles always move, the quality of the received signals is fluctuated depending on the number of vehicles, the distance of the communicated vehicles, surrounding building structures, and geolocation. In this paper, we consider reliable V2V/V2I communications, which adaptively selects adequate parameters for improving communication efficiency by checking the surrounding environment using the spectrum environment map. Here the spectrum environment map is generated by collected surrounding environment information observed at distributed vehicles.