Link-Level Model for SINR and HPBW Evaluation in 5G mmWave UDN with Location-Aware Beamforming

Location Aware Beamforming (LAB) in millimeter wave (mmWave) is one of the fundamental tools for Space-Division Multiple Access (SDMA) in 5G New Radio (NR) ultra-dense networks (UDN). Presented research is devoted to the formalization of link-level model, describing functioning of a set of directional radio links. Each directional link between gNodeB (gNB), equipped with an antenna array, operating in beamforming mode, and a User Equipment (UE), operating in omnidirectional mode, is formed according to the location of the UE, known at the gNB. Background of LAB is efficient compensation for propagation losses in mmWave and maintenance of affordable Signal to Interference plus Noise Ratio (SINR) in UDN by means of tuning the required Half Power Beam Width (HPBW). The method, used to evaluate SINR and HPBW, is link level simulation model formalization. Contribution of research includes software implementation of simulation model for SINR and HPBWat as positioning error decreases from 10 to 1 m 90th percentile SINR increases by 30 dB and required HPBW in horizontal and vertical plane decreases by 24 and 16° respectively.