Flexible Resource Allocation Scheme for Non-Overlapping Subband Full Duplex Systems

To pursue lower latency and higher uplink data rate in time division duplex (TDD) systems, full duplex is introduced in 5G networks. This paper first analyzes the frame structure of in-band full duplex and non-overlapping subband full duplex (SBFD). Then, the interference signals are studied. Especially, the interferences are modeled in the typical SBFD scenarios. Finally, the system level simulations of SBFD are conducted in nine cases considering different uplink and downlink subband bandwidth configuration in indoor scenarios. The simulation results demonstrate that, in large packet scenario, a tradeoff between uplink performance gain and downlink degradation should be made in SBFD, in small packer scenario, SBFD can enhance the uplink performance and reduce the latency remarkably with negligible downlink degradation by configuring appropriate uplink bandwidth.