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Quality of Experience Engineering for Customer Added Value Services: From Evaluation to Monitoring by Abdelhamid Mellouk, Antonio Cuadra-Sanchez

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9

QoS and QoE Effects of Packet Losses in Multimedia Video Streaming

René SERRAL-GRACIÀ, Eva MARÍN-TORDERA, Xavier MASIP-BRUIN and Marcelo YANNUZZI.

Traditionally, quality of service (QoS) has been used to assess and guarantee the compliance of the deployed service level agreements (SLAs). However, most of the network performance metrics used to estimate the QoS are only concerned with certain aspects of traffic without considering the end users' subjective perception. In this context, with the increasing presence of multimedia traffic, the user’s perception (QoE) of networked (multimedia) services has become a major concern for content providers and network operators. While a plethora of works propose solutions for QoS and QoE, we put the focus on the relationship between a usual traffic metric and the QoS and QoE assessment. In this chapter, we analyze the effect in a multimedia video streaming, i.e. peer-to-peer television (P2PTV), of a common traffic metric, i.e. packet losses, on the quality parameters, i.e. QoS and QoE.

9.1. Introduction to the overall scenario

With the incessant growth in multimedia sharing over the Internet, quality of experience (QoE) assessment is becoming a hot research topic, especially for Internet service providers (ISP) and content providers (CP), whose goal is to provide the best service to the end users. Despite this growing interest in the end user perceived QoE about the service, there are many issues still to be solved in order to provide a ...

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