A performance comparison of in-band full duplex and dynamic TDD for 5G indoor wireless networks

Abstract

In-band full duplex has emerged as a solution for high data rate and low access delay for 5G wireless networks after its feasibility has been demonstrated. However, the impact of the in-band full duplex on the system-level performance of multi-cell wireless networks has not been investigated thoroughly. In this paper, we conduct an extensive simulation study to investigate the performance of in-band full duplex for indoor 5G small cell wireless networks. Particularly, we compare the in-band full duplex with static and dynamic time division duplexing schemes which require much less hardware complexity. We examine the effects of beamforming and interference cancellation under various traffic demands and asymmetry situations in the performance comparison. Our objective is to identify under which condition and with which technology support the in-band full duplex becomes advantageous over the simpler duplexing schemes. Numerical results indicate that for highly utilized wireless networks, in-band full duplex should be combined with interference cancellation and beamforming in order to achieve a performance gain over traditional duplexing schemes. Only then in-band full duplex is considered to be advantageous at any number of active mobile stations in the network and any downlink to uplink traffic proportion. Our results also suggest that in order to achieve a performance gain with the in-band full duplex in both links, the transmit power of the access points and the mobile stations should be comparable.

Spectrum sharing framework in full duplex mode with minimum interference in 5G cellular network

“…Osama AlSaadeh et al [24] studied the in-band full-duplex performance of 5G indoor small cell wireless networks. They compared in-band full duplex to static and dynamic time division duplex methods that required far less hardware.…”

Optimization of Efficient Dual Band PIFA System for MIMO Half-Duplex 4G/LTE and Full-Duplex 5G Communications

“…First, it should be noted that except the isolation, the performance metrics for 5G FD antenna system are some signal processes or propagation models characterization as the average mobile station downlink experienced rate, the average mobile station uplink experienced rate, the average mobile station sum experienced rate [53]. However, it is not our objective in this work.…”

Traffic‐aware resource allocation scheme for mMTC in dynamic TDD systems

“…Taking into account the dynamic and asymmetry uplink (UL)/ downlink (DL) traffic between the MTC and cellular networks, dynamic time-division duplexing (D-TDD) may be a potential solution to the system co-existence and has attracted some attention [9][10][11][12][13]. Compared with the frequency division duplexing (FDD) mode, due to the intermittent transmission in the TDD mode, the number of time slots in DL and UL can be asymmetric and can be changed dynamically, thus leading to a significant increase in network bandwidth efficiency [14].…”