Simple vehicle information delivery scheme for ITS networks

Abstract — There has been significant interest and progress in the field of vehicular ad hoc networks (VANETs) in recent years. Intelligent Transport System (ITS) is the major application of VANETs. Vehicle-to-vehicle communication is an important fac-tor for safe driving applications such as blind crossing, prevention of collisions, and control of traffic flows. These applications require exchanges of vehicle information such as vehicle position, cruising speed, direction, and steering angle. Delivery schemes of vehicle information require high delivery ratio, low latency, and high scalability. Additionally, large-size vehicles on actual road environments may interrupt communication between vehicles. Therefore, adequate vehicles should forward vehicle information to their neighbor vehicles in delivery of vehicle information. This paper proposes a new routing protocol for delivery of vehicle information to neighbor vehicles within a specified geographical region. The proposed protocol can deliver new vehicle informa-tion with short delay by performing temporal limited flooding before a route construction. Moreover, it can deliver vehicle information effectively with forwarding by adequate vehicles. As a result, our scheme can achieve the high delivery ratio of vehicle information and high scalability. Finally, we assume the different sizes of vehicles in the computer simulations. Then, we evaluate the proposed scheme in the more actual wireless environment. The numerical results show that the proposed protocol can achieve the high delivery ratio with short delay even if the communication between standard-size vehicles is interrupted by the large-size vehicle. Moreover, our protocol has the high scalability in case of increasing of vehicles