In-service assessment of mobile services QoE from network parameters
In this paper, we analyze the relationship between the achieved Quality of Experience (QoE) of the web browsing network service and in-service network parameters obtained by passive monitoring. With this regard, we conducted experiments where the user QoE and in-service parameters are measured simultaneously, where the latter are derived from traffic data captured by passive probe on the Gn interface of the mobile network, and correlated to detailed records of HTTP and TCP protocols. Unlike most studies conducted in order to examine the connection between QoE of the web browsing network service and in-service network parameters, experiment in this research was performed in a live mobile network while QoE is measured by the participants in the experiment. For the purposes of research, nineteen in-service parameters are defined using the applications of system for performance management with passive probes. The link between QoE and in-service parameters was tested by Spearman's rank-order correlation. Based on the subjective evaluations by the participants in the experiment about the web browsing service quality, it was evident that there was strong relationship between the QoE and specific network parameters such as e.g. Average Time to get first data and Average Time to connect. However, no such relationship was found between the Cancellation rate parameter and QoE, as the hypothesis that there was no relationship between these two parameters, could not be rejected.