Our main focus in this paper is to determine the most appropriate method for assessing the Quality of Experience (QoE) in the context of Multiple Description Coding (MDC) video streaming, over multiple overlay paths, in video distribution networks (VDN). For this objective, we compare three different types of QoE assessment approaches, subjective approach, objective approach and a hybrid approach that can overcome the limitations of both subjective and objective ones. Results show how the hybrid Pseudo-Subjective Quality Assessment (PSQA) tool can outperform the well-known peak signal to noise ratio (PSNR) as well as the subjective methods for evaluating the perceived video quality in our context of MDC streaming.
In the domain of content delivery over Internet, each of the Client/Server and P2P communication modes has its pros and cons. In this scope, hybrid network architectures have been recently proposed as a relevant solution. In this paper we propose a new hybrid architecture that is called P2PWeb, between the centralized client/server and the non-centralized P2P architectures for content delivery. The main objective of this proposal is to reduce the load over the server in order to provide a better Quality of Service (QoS) for the end-users. A new P2PWeb communication protocol has been implemented and deployed to reach the objective. The experimentation results and the performance evaluations that we have made show the efficiency of the proposed system in terms of QoS evaluations.
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