Queueing system for analyzing the operation of 5G network with NS under preemption-based scheduler

Yves Adou, Ekaterina Markova, Yuliya Gaidamaka
The rapid deployment of the fifth generation (5G) of wireless systems since 2020 is profoundly transforming the telecommunication area, paving the way for new-generation networks that include more devices, are more reliable and enable faster communications. The network slicing (NS) technology, considered as one of the 5G systems' key features, allows the operation of several virtual networks called network slice instances (NSIs) on top of the same physical infrastructure, e.g. a base station. Ensuring a satisfactory quality of service (QoS) level under NS technology is an important task, probably requiring to use the guaranteed's bit rate (GBR) QoS concept. In this paper, a queueing system model for analyzing the operation of three 5G NSIs under a preemption-based scheduler maintaining the required QoS levels is proposed. The system's key performance indicators (KPIs) are defined and computed.