Smartphone Based Real Time Content Sharing in Opportunistic Vehicle Networks

Abstract

Vehicle Network is a different network dedicated for communication between vehicles. They communicate with each by sharing the information they have while driving in the road. Everyone carries a smartphone with them and can be used as device to transfer data between the nearby vehicles in their range of communication by using the available network opportunistically. Opportunistic network can enhance the user experience by utilizing nearby wireless links with more bandwidth instead of just depending upon mobile data infrastructure and reduce the higher cost related to mobile data services. In this research, Wi-Fi direct has been used as the communication tool between the smartphones to transfer real time videos. These videos can be viewed by client vehicles to gather information about the different road conditions ahead of them and with this knowledge, prevent fewer accidents in the road and lessen the traffic in particular road. The system consists of smartphones working as server and client whom are connected to a hotspot and use Wi-Fi Direct to send real time videos at same time to each other. TCP has been used as the protocol because of its reliability factor. The smartphone is capable of displaying the both captured video and received video simultaneously at the same time. For doing that, two kinds of activity have been used. The Camera Activity to display the video taken from the local camera and fragment activity to display the received video. The MediaCodec API of the android has been used for encoding and decoding the video data captured from smartphone in H.264 format.

Keywords: Wi-Fi-Direct, TCP, API, Real time, H.264, Vehicle Network, Media Codec