Investigation on optimum frequency bandwidth allocation method among service channels for system throughput maximization

Abstract

In the fifth generation mobile communication systems, various wireless communication services such as massive machine-type communications (mMTC), ultra-reliable low latency communications (URLLC), and enhanced mobile broadband (eMBB) will be supported. The physical channels (service channels) dedicated to these respective wireless communication services will be multiplexed in a shared system frequency band and these services will have different requirements regarding spectrum efficiency and fairness among terminals. Therefore, appropriate frequency bandwidth assignment to each service channel considering the service requirement, number of terminals, and their channel conditions for all wireless communication services is important to maximize the system performance. In this paper, we define different forms of system throughput for the respective service channels considering different service requirements. Based on a definition of the integrated system throughput that combines the system throughput levels of all service channels, this paper proposes the optimum frequency bandwidth allocation method among service channels to maximize the integrated system throughput. Computer simulation results show the effectiveness of the proposed method.