Enhanced user datagram protocol for video streaming in VANET

Research and development on video streaming over vehicular ad hoc networks (VANETs) have expanded rapidly in the last few years. In order to improve road safety and to satisfy road users requirements, video streaming has been proposed to disseminate continuously, an accurate video data, concerning traffic circumstance, travel information, divertissement, etc. High quality video streaming in vehicular environment is very challenging due to the very high dynamic of VANET topology and its intermittent connection, stringent requirements of video transmission such as reduced propagation delay and decreased signal to noise ratio. In this paper, we propose a new protocol called Enhanced User Datagram Protocol (EUDP) for video streaming in VANET. Unlike User Datagram Protocol (UDP) which did not consider any recovery mechanism of erroneous packets, EUDP uses Sub-Packet Forward Error Correction (SPFEC), and adopts the unequal protection of video frame types (i.e. I, P, B) to improve the video streaming quality. After a set of simulations and comparisons with UDP and EUDP without unequal protection of video frame types (EUDP-E), our proposal showed a significant improvement in terms of error recovery rate, PSNR and MOS of transmitted video.