The 5G Planning Scenarios Affection on MAC-layer Scheduler Efficiency

The fifth-generation cellular technology introduces a vast number or services. The 5G New Radio combines different quality of service requirements in one technology, such us: peak data rate, average packet delay, jitter, coverage, number of connected devices, etc. To provide a certain quality of service requirements the resource allocation procedure is done by a scheduler function at MAC-layer. The scheduler's decisions are based on path losses and signal to interference and noise ratio calculated for each user equipment. The problem is to accurately predict a cell radius for particular cell configuration. The path losses in air interface are calculated with the help of semi-theoretical and empirical propagation models. Also, they are called planning scenarios. Since the 5G New Radio uses carrier frequencies below 6 GHz and above 20 GHz more planning margins should be taken into account to correctly predict the cell radius. Authors have developed a simulation tool for scheduler efficiency analysis. The is aim analyze the MAC-layer scheduler efficiency for different planning scenarios. The simulation results show the importance of cell radius prediction for high frequencies.