Bounded Network Coding Redundancy for Multi-Layer Video Streaming

Abstract

International audienceIn this paper, we address the tradeoff between network coding overhead and multi-layer video tolerated loss rate on multi-hop wireless networks. We aim, through a simulation study, to evaluate a bounded network coding redundancy, for scalable video, based on the measured packet loss and the targeted maximum application loss rate. We consider, first, applying the bounded redundancy on a generation based scheme, and evaluate the tradeoff between tolerated video loss and the introduced overhead. Second, since scalable video produces a high video quality with various levels of importance, we propose to apply the bounded redundancy to an Expanding Window based scheme. We carried out a performance evaluation of both network coding schemes with two video test sequences using ns-3 simulator. We show the benefits of our scheme particularly in terms of overhead and PSNR