<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">P. Casas</style></author><author><style face="normal" font="default" size="100%">M. Seufert</style></author><author><style face="normal" font="default" size="100%">R. Schatz</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">YOUQMON: A System for On-line Monitoring of YouTube QoE in Operational 3G Networks</style></title><secondary-title><style face="normal" font="default" size="100%">31st IFIP Performance</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">3G Networks</style></keyword><keyword><style  face="normal" font="default" size="100%">MOS</style></keyword><keyword><style  face="normal" font="default" size="100%">QoE Monitoring</style></keyword><keyword><style  face="normal" font="default" size="100%">Stallings</style></keyword><keyword><style  face="normal" font="default" size="100%">YouTube</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2013</style></year></dates><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;YouTube is changing the way operators manage network performance monitoring. In this paper we introduce YOUQMON, a novel on-line monitoring system for assessing the Quality of Experience (QoE) undergone by HSPA/3G customers watching YouTube videos, using network-layer measurements only. YOUQMON combines passive traffic analysis techniques to detect stalling events in YouTube video streams, with a QoE model to map stallings into a Mean Opinion Score reflecting the end-user experience. We evaluate the stalling detection performance of YOUQMON with hundreds of YouTube video streams, and present results showing the feasibility of performing real-time YouTube QoE monitoring in an operational mobile broadband network.&lt;/p&gt;</style></abstract></record></records></xml>