On the design of the scheduling algorithm for the full duplexing wireless cellular network

In this paper, we consider the scheduling issue on the media access control (MAC) layer of a new practical full duplexing (FD) wireless cellular network, where the central base station (BS) works in the FD mode while the users (UEs) work in the time division duplexing (TDD) mode for considering the limited UE ability to handle the self co-channel interference in the FD mode. The main challenge of the scheduling for the FD system is not only how to allocate the channel resources to the UEs to maximize the system performance like the traditional frequency division duplexing (FDD) or TDD system, but also to determine the communication direction for each UE, i.e., down link (DL) or up link (UL) communication. We then propose an optimal scheduling algorithm to maximize the system throughput with considering the communication direction determination problem into the scheduling formulation. A modified proportional fair scheduling algorithm is also proposed to achieve the fairness among UEs. Furthermore, we put forward a suboptimal scheduling algorithm to reduce the computation complexity for a practical use. The simulation results show that through the proposed scheduling algorithms, the FD system can achieve significant improvement on the spectrum efficiency compared to the FDD system which works with traditional throughout maximization scheduling algorithm. It also proves the effectiveness of the FD system studied in this paper.