Applicable Versions
NetSim StandardNetSim Pro

If you have enabled shadow fading then you will see a variation in path loss at points equidistant from the gNB. 

This is based on table 7.4.1-1 of standard 3GPPTR38.900. 

The reason in brief: at different points equidistant from the gNB the interference of multiple rays can range from being completely destructive to totally constructive. 

The way to get the same SNR at all points equidistant from the gNB would be to NOT enable shadow fading in channel characteristics. 

Applicable Releases

Set Shadow Fading Model to NONE. Go to gNB -> Interface-5G_RAN -> Physical-Layer -> Channel-Model -> Shadow_Fading_Model ->NONE

Useful link

1. Overview of NetSim 5G library:

2. NetSim 5G documentation (v13.3):