Analysis of Downlink Co-existence in 5G New Radio Homogeneous Networks

In 5G New Radio (NR) system, beamforming with large antenna array is utilized to compensate the high pathloss. However, the directionality of beam has a significant influence on the performance of co-existence. In this paper, the co-existence of downlink 5G NR homogeneous networks is investigated and analyzed in Urban Macro (UMA). Adjacent channel interference ratio (ACIR), as an important parameter of co-existence analysis, is explored to guarantee the performance of users, especially for the cell-edge users. Capacity loss is used to describe impact of co-existence. The results show the performance of co-existence and give the advice of the appropriate ACIR design. Besides, beam sensitivity and co-existence analysis in alternative array configurations are simulated as a comparison. The co-existence impact of different site deployment for NR systems is studied in the end.