O.2.3 Reference measurements

38.521-23GPPNRPart 2: Range 2 StandaloneRadio transmission and receptionRelease 17TSUser Equipment (UE) conformance specification

The quality of the quiet measurements for integrated RF parameters such as TRP shall use 3D pattern measurements of the reference antenna patterns as they most closely resemble the 3D/spherical surface measurements/integrals of EIRP or EIS. Therefore, the quality of the quiet zone measurements for TRP metrics shall be based on efficiency measurements. On the other hand, the quality of the quiet zone measurements for single-directional EIRP and EIS metrics shall be based on gain measurements of the direct line-of-sight link between the reference AUT and the measurement antenna.

The grid types for the TRP measurements shall match those outlined in M.1 and the minimum number of grid points (including quadratures for constant step size grids and implementation of constant density grids) shall meet the 0.25 dB maximum standard uncertainty summarized in M.4.