How to determine traffic consumption?

Question

Data transfer

Hello! The task was to determine the consumed traffic on the railway section. It is necessary to evaluate the site from the point of view of departments and determine the traffic consumption within the DMR standard, if the expense was not only for voice transmission, but also for data transmission. I would like to know how interesting it can be, because such a topic was offered to me as a thesis. Maybe someone will tell you how to correctly formulate the problem?