Local 5G Received Signal Power Measurement in Presence of Building

The local (private) 5G networks are now getting a lot of attention, since it can offer the secure and flexible network by the cellular-based technologies at the private facilities. This paper evaluates the received signal strength indicator (RSSI) performance of the local (private) 5G system employing the 4.8499 GHz frequency band. Measurements with the size of 50 m × 20 m were set at a location between several buildings. The base station (BS) is installed inside and outside the building and the user equipment (UE) moves around the BS in the presence of buildings. The measurement results show that RSSI values differ by about 10 dB due to the penetration loss of the walls. Furthermore, the RSSI values are significantly degraded when changing from the line-of-sight (LOS) environment to the non-line-of-sight (NLOS) environment.