Improving latency and reliability for vehicle system under fog computing networks

Abstract

In order to increase the level of convenience, people drive the car instead of walking. This case made the city’s traffic flow larger than before, and the probability of traffic accidents increase as the same time. Because of the improving in the number of traffic accidents and the dissatisfaction of road users in the vehicle network. To improve this phenomenon, the Vehicular Ad Hoc Networks (VANET) technology has been proposed. The main concept of VANET is to build an on-board sensor network, and then exchange information among the vehicles for obtaining the traffic information. In the process of information transmission, the storage and processing requirement will increase relatively. Furthermore, the latency for transmitting data between the terminal device and the data center is still an important problem that needs to be improved. In a real situation, the sensing devices under the VANET may be faulty, and these faulty devices may disturb the correctness and consistence of the overall VANET system. In order to reduce the latency and to achieve the correctness and consistency for the vehicular network system, an agreement based method for ensuring the correctness and consistency of the vehicular information system under the fog computing network has been proposed in this paper. Under the proposed three layers architecture of fog computing network, users can get the real-time traffic information of the local area with low latency and get the related information about the remote traffic condition in advanced.