Experimental Analysis of the QoS/QoE Relationship for Different Services

Inhalt:
This paper investigates the relationship between the Quality of Service (QoS) and the Quality of Experience (QoE) in a data network by performing a lab experiment with probands where services are provided with varying link capacities. Users give a feedback about the perceived quality so that the subjective QoE in terms of Mean Opinion Score (MOS) can be measured. Three services – video streaming, video conferencing and web browsing – are tested. Besides judging the service quality, the user survey also includes questions about the user's networking experience and usage habits. The results show that for all services, the QoE is improved when the link capacity is increased. The investigations in this work will serve as a basis for follow-up field tests.