Modelling of the LTE radio interface for NRT traffic

In modern cellular networks the provision of higher priorities to Quality of Service (QoS) sensitive applications is the important task for cellular networks vendors and operators. In order to satisfy these requirements it is necessary to implement QoS mechanisms in the software and hardware used in multiservice cellular networks. QoS mechanisms in the LTE network can be implemented, for example, in the radio interface. In the article, a new analytical model for a determination of traffic characteristics of RT and NRT traffic streams serviced in the LTE radio interface is proposed. The model has been validated by a number of simulation experiments carried out by the authors. The conducted experiments have confirmed that the proposed analytical model can be used for engineering calculations.