Data rate fluctuations from user perspective in 4G mobile networks

Approximately two thirds of users worldwide use mobile (i.e. cellular) network for Internet access. Downlink and uplink data rates are important factors for enabling certain level of QoS (Quality of Service) and QoE (Quality of Experience). In this paper the aforementioned data rates were measured using only equipment available to an ordinary subscriber. For Internet access, we used a mobile network technology that currently enables highest data rates - LTE (Long Term Evolution). Two different tools were used for determining the data rates - HAKOMetar and Speedtest. The measurements were carried out on four distinct locations in the city of Zagreb, Croatia and aggregated results are presented separately for weekdays and for weekends. The contribution of our paper is twofold. Firstly, we show how much the data rates fluctuate during the weekdays and weekends, and when maximum uplink and downlink data rates are achieved. Secondly, we compare the measured data rates with those advertised by mobile network operators, and propose the changes they should enforce to better inform mobile network subscribers about the achievable data rates at a certain location.