5G System Simulator Development for Scheduler Efficiency Analysis

The network traffic is growing fast, especially a mobile network that has explosive growth from 2015 to 2020. The 5G cellular technology (New Radio, NR) is developed to fulfill a service demanded by consumers. There are three main services provided by NR: enhanced mobile broadband, massive machine type communication and ultra-reliable and low latency communication. The data for all the services are transmitted through the same physical layer. The service requirements for each user equipment (UE) are performed by MAC-layer. Inside the MAC-layer, the scheduler function decides which packet (or transport block) will be transmitted by physical layer. The problem is to find and optimal way to transmit data via physical layer according to quality of service requirements for each packet. To solve the problem authors have developed 5G system simulation tool for air interface modeling from system level perspective. The tool is capable to configure number of base stations (gNb), number of UE, UE's mobility pattern, scheduler algorithms, etc. for more accurate scheduler algorithm analysis. The scheduler works both for control plane data and for user plane data.