Routing-Aware Multiple Description Video Coding Over Mobile Ad-Hoc Networks

Abstract—Supporting video transmission over error-prone mobile ad-hoc networks is becoming increasingly important as these networks become more widely deployed. We propose a routingaware multiple description video coding approach to support video transmission over mobile ad-hoc networks with multiple path transport. We build a statistical model to estimate the packet loss probability of each packet transmitted over the network based on the standard ad-hoc routing messages and network parameters. We then estimate the frame loss probability and dynamically select reference frames in order to alleviate error propagation caused by the packet losses. We conduct experiments using the QualNet simulator that accounts for node mobility, channel properties, MAC operation, multipath routing, and traffic type. The results demonstrate that our proposed method provides 0.7-2.3 dB gains in PSNR for different video sequences under different network settings and guarantees better video quality for a...

• Type: Journal
• Year: 2011
• Where: TMM
• Authors: Yiting Liao, Jerry D. Gibson
• Keywords: Loss Probability, Mobile Ad-hoc Networks, TMM 2011, Video Transmission