Mobile Network Testing of 5G NR FR1 and FR2 Networks: Challenges and Solutions

This paper considers mobile network testing for 5G NR (both sub-6GHz and millimeter wave frequency bands) with a passive RF receiver. Methods for the measurement of network coverage, network synchronization, channel impulse response, and the strength of the electromagnetic field with a code selective procedure are proposed and implemented. An approach for automatic channel detection is presented in order to find the relevant carrier frequencies for 5G mobile network testing in networks with an unknown configuration. Finally, the proposed methods are applied for deployed 5G networks, demonstrating the effectiveness of the equipment.