M.2.1 UE Power classes

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

M.2.1.1 Power class 1 devices

In order to make a reasonable trade-off with measurement uncertainties, it is recommended to use for beam peak search the following measurement grids leading to a systematic error of “Beam Peak Search” of 0.7 dB:

– Constant density grid (using the charged particle implementation) with at least 3000 grid points.

– Constant step size grid with at least 4902 grid points, corresponding to an angular step size of 3.6º.

For better measurement uncertainties, finer measurement grids as shown in Table M.2.1.1-1 may be used. Choice of grids among these 2 types of grids is up to test system implementation.

Table M.2.1.1-1: Minimum number of unique grid points for sample systematic errors

Systematic Error of ‘Beam Peak Search’: Offset from Beam Peak at which CDF is 5%	Minimum Number of Unique Grid Points for Constant Step Size Grid	Minimum Number of Unique Grid Points for Constant Density Grid
0.3dB	10226 (2.5o step size)	7000
0.4dB	N/A	5000
0.5dB	7082 (3ostep size)	4500
0.6dB	N/A	3500
0.7dB	4902 (3.6o step size)	3000

M.2.1.2 Power class 2 devices

TBD

M.2.1.3 Power class 3 devices

In order to make a reasonable trade-off between measurement uncertainties, at least 800(constant density grid with charged particle implementation) or 1106 (constant step size grid) measurement grid points shall be used for beam peak search procedures. For better measurement uncertainties, finer measurement grids as shown below may be used. Choice of grids among these 2 types of grids is up to test system implementation.

Table M.2.1.3-1: Minimum number of unique grid points for sample systematic errors (non-sparse antenna arrays)

Systematic Error of ‘Beam Peak Search’: Offset from Beam Peak at which CDF is 5%	Minimum Number of Unique Grid Points for Constant Step Size Grid	Minimum Number of Unique Grid Points for Constant Density Grid (charged particle implementation)
0.2dB	2522 (5o step size)	2000
0.3dB	1742 (6o step size)	1500
0.4dB	N/A	1000
0.5dB	1106 (7.5ostep size)	800

Based on an optional vendor declaration with respect to the antenna array configuration, devices with an M x N (M ≥ N) configuration with M ≤ 4 and N ≤ 2 can utilize either of the following minimum number of grid points with the same systematic error of ‘Beam Peak Search’ of 0.5dB for beam peak search procedures:

– 310 (constant density grid with charged particle implementation) measurement grid points.

– 422 (constant step size grid with Dq=Df=12.0^o) measurement grid points.

M.2.1.4 Power class 4 devices

TBD