TR 38.871
Study on NR frequency range 2 (FR2) Over-the-Air (OTA) testing enhancements
V18.1.0 (Wzip)
2024/03 … p.
- Rapporteur:
- Dr. Han, Bin
Qualcomm Incorporated
full Table of Contents for TR 38.871 Word version: 18.0.0
1 Scope
2 References
3 Definitions of terms, symbols and abbreviations
4 General
5 UE RF testing methodology for multi-Rx chain DL reception
6 UE RRM testing methodology for multi-Rx chain DL reception
7 UE demodulation and CSI testing methodology for multi-Rx chain DL reception
8 Summary
A Measurement uncertainty
B UE coordinate system
G Step size of measurement grids
$ Change history
1 Scope p. 7
The objectives for FR2-1 OTA testing for UEs with multi-panel reception and 4DL layer are as follows:
- Define a test methodology for RF/RRM/Demodulation requirements testing for devices that can receive simultaneously from multiple Angle of Arrival (AoA).
-
The multiple AoA test setup should enable testing of up to 2 DL Layers with dual polarization for each angle;
- For RRM, the target should be to allow testing of 4 AoAs with 2 simultaneously active AoAs .
- Define a test methodology for up to 4 DL MIMO layer demodulation testing.
- Smartphone form factor should be the first priority, other UE types should also be discussed as 2nd priority
- Develop the related preliminary uncertainty assessments for the test methodologies
- The tests shall take the test system reuse, test system complexity and test time into account to keep the whole test costs within a reasonable level.
2 References p. 7
3 Definitions of terms, symbols and abbreviations p. 8
4 General p. 9
4.1 Objective p. 9
4.2 Devices Type p. 9
5 UE RF testing methodology for multi-Rx chain DL reception p. 10
5.1 General p. 10
5.2 Measurement setup p. 10
5.2.1 Measurement Setup with Full Degree of Rotation Freedom for Each AoA p. 10
5.2.2 Measurement Setup with Full Degrees of Freedom for AoA1 with Fixed Angular Offset(s) Between AoA1 and AoA2 p. 19
5.2.3 Measurement Setup with Full Degrees of Freedom for AoA1 with Variable Angular Offset(s) between AoA1 and AoA2 p. 24
5.2.4 Measurement Setup with Full Degrees of Freedom for AoA1 with Partial Freedom of Variable Angular Offset(s) between AoA1 and AoA2 p. 26
5.2.5 Measurement Setup with Full Degrees of Freedom for AoA1 with Fixed AoA2/Anchor in NF p. 28
5.2.6 Measurement Setup with Test Modes p. 29
5.2.7 Measurement Setup to reduce sensitivity to UE orientation in holder with full degrees of freedom for AoA1 with fixed angular offset(s) between AoA1 and AoA2 p. 30
5.3 Test System Aspects p. 39
5.3.1 Absolute Probe Locations p. 39
5.3.2 Minimum and Maximum Angular Separation between Probes p. 41
5.3.3 Impact of Probe Locations and 3D Scans on DL Directions p. 44
5.3.4 DL Polarizations Perceived by the UE p. 57
5.3.5 AoA1-AoA2 DL Orientation Vectors p. 68
5.3.6 Far-field criteria p. 74
5.4 Calibration Measurement Procedure p. 74
5.5 Test procedure p. 75
6 UE RRM testing methodology for multi-Rx chain DL reception p. 77
6.1 General p. 77
6.2 Measurement setup p. 77
6.2.1 Baseline measurement setup p. 77
6.2.1.1 Test scenarios p. 77
6.2.1.2 Measurement setup for Category 1 scenario p. 77
6.2.1.3 Measurement setup for Category 2 scenario p. 78
6.2.1.4 Far-field criteria p. 81
6.2.1.5 Calibration measurement procedure p. 81
6.2.1.6 Reference point p. 81
6.2.2 Test parameters p. 82
7 UE demodulation and CSI testing methodology for multi-Rx chain DL reception p. 83
7.1 General p. 83
7.2 Measurement setup p. 83
8 Summary p. 84
A Measurement uncertainty p. 86
A.1 Measurement uncertainty budget for UE RF testing methodology p. 86
A.2 Measurement uncertainty budget for UE RRM testing methodology p. 88
A.3 Measurement uncertainty budget for UE demodulation testing methodology p. 89
B UE coordinate system p. 91
B.1 Reference coordinate system p. 91
B.2 Alternate coordinate system for 2AoA testing p. 92
B.3 Test conditions and angle definitions p. 94
B.4 DUT positioning guidelines p. 99
G Step size of measurement grids p. 99
$ Change history p. 102
