Delay and Quality of Link Aware Routing Protocol Enhancing Video Streaming in Urban VANET

Abstract

Multimedia communication over VANET let drivers, passengers to capture live scenes, share, and access stored content in order to be informed of a specific event or to be entertained and have an enjoyable trip. The main concern of video streaming transmission in this highly dynamic network is the improvement of the Quality of Experience (QoE). Indeed, one of the critical issues in VANET is the design of suitable routing protocol dealing with the QoE requirements. In this paper, we focus on multi-hop level routing and we propose a Delay and Quality of Link aware cross-layer Routing (DQLR) protocol enhancing the perceived video quality. In the aim to find out a route from communicating vehicles, we define a set of fuzzy rules for simultaneously minimizing the end-to-end delay and the Packet Loss Ratio and maximizing the qualities of links. To demonstrate the efficiency of DQLR for video streaming, we compare it with the AOMDV protocol in terms of QoE and QoS parameters. The simulation results show that our protocol achieves better performance compared to AOMDV in terms of PSNR (Peack Signal to Noise Ratio), MOS (Mean Opinion Score), SSIM (Structural SIMilarity), end-to-end delays and frame loss ratio.