The purpose of this paper is to design and implement the vehicular camera network platform using the Wi-Fi peer-to-peer(P2P). This platform can provide safety services and information-sharing systems for vehicles.
In this paper, we designed the platform divided into three parts: a network, an image recognition and a database. To establish up the network, we applied the Wi-Fi P2P technique. However, the Wi-Fi P2P is unsuited to the vehicular environment. Therefore, we modified the operation model of Wi-Fi P2P. First, we designed the method to form the network using the WI-Fi P2P. Next, we proposed two methods, Fixed channel Allocation with constant Search Technique(FAST) and Preparation for gRoup formation in vehicular Environment(PRE). FAST is the discovery method which is optimized to find target device, and PRE is the group formation method which is minimized the delay to adopt group owner and to establish newtork group. Finally, we proposed our methods of the image recognition and the database.
The authors show the feasibility of the proposed platform, and the performance of two methods, FAST and PRE, through experiments. To verify the feasibility, we measured the data transmission time in real environment. Further, we measured the device discovery and group formation delays to demonstrate the performance of the proposed methods. Experiment results show that FAST and PRE reduced the device discovery and group formation delays, respectively. After that, we performed the network simulation to proposed FAST and PRE methods. Simulation results show the performance of two methods in the vehicular environment.
A key contribution of this paper is design the new service platform using the modified Wi-Fi P2P for the vehicular environment. The platform can broadcast the information packets through the network and integrate the useful information within the network. The platform can be utilized in various applications. For examples, vehicles can detect an obstacle before drivers are finding it. In the case of car chase, a pursuer can collect the location of the fleeing vehicle over wireless communication.