Performance Analysis of Subband Full Duplex for 5G-Advanced and 6G Networks Through Simulations and Field Tests

As an essential technology in the evolution towards full duplex, the subband full duplex (SBFD) operation has attracted significant attention from both the academic and industrial communities, as well as global standardization bodies for its capability to increase the user perceived throughput (UPT) and the uplink coverage, reduce the transmission latency and support various traffics with different requirements in the same cell in time division duplexing (TDD) bands. In this paper, the model of a SBFD based communication system is clearly presented, along with the interference. To facilitate the early deployment of SBFD in 5G-Advanced and 6G networks, comprehensive performance evaluations on UPT, latency and coverage under different scenarios, different SBFD patterns and different traffics are conducted to explore the potential of the SBFD operation. Furthermore, a field test is carried out to verify the practical performance of SBFD in a typical outdoor scenario. Results obtained from both the simulations and field tests demonstrate significant performance gain for SBFD compared with traditional division duplexing schemes, especially for uplink transmissions.