Content for TR 38.871 Word version: 18.1.0
1 Scope
2 References
3 Definitions of terms, symbols and abbreviations
3.1 Terms
3.2 Symbols
3.3 Abbreviations
4 General
4.1 Objective
4.2 Devices Type
...
...
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
The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
- References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific.
- For a specific reference, subsequent revisions do not apply.
- For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
[1]
TR 21.905: "Vocabulary for 3GPP Specifications".
[2]
TS 38.101-2: "User Equipment (UE) radio transmission and reception; Part 2: Range 2 Standalone".
[3]
TR 38.810: "Study on test methods".
[4]
TR 38.884: "Study on enhanced test methods for FR2 NR UEs".
[5]
TS 38.509: "Special conformance testing functions for User Equipment (UE) ".
[6]
TS 38.521-2: "User Equipment (UE) conformance specification; Radio transmission and reception; Part 2: Range 2 Standalone".
[7]
TS 38.508-1: "User Equipment (UE) conformance specification; Part 1: Common test environment".
[8]
TS 38.151: "Multiple Input Multiple Output (MIMO) Over-the-Air (OTA) performance requirements".
[9]
TR 38.884: "Study on enhanced test methods for FR2 NR UEs".
[10]
TS 38.508-1: "User Equipment (UE) conformance specification; Part 1: Common test environment".
[11]
TS 34.114: "User Equipment (UE) / Mobile Station (MS) Over The Air (OTA) antenna performance; Conformance testing".
[12]
TS 38.133: "Requirements for support of radio resource management".
[13]
TR 38.903: "Derivation of test tolerances and measurement uncertainty for User Equipment (UE) conformance test cases".
3 Definitions of terms, symbols and abbreviations p. 8
3.1 Terms p. 8
For the purposes of the present document, the terms given in TR 21.905 and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905.
Measurement angle:
the angle of measurement of the desired metric from the view point of the UE, as described in Annex B.
RX beam peak direction:
direction where the maximum total component of RSRP and thus best total component of EIS is found.
TX beam peak direction:
direction where the maximum total component of EIRP is found.
3.2 Symbols p. 8
For the purposes of the present document, the following symbols apply:
θ
Zenith angle in the spherical co-ordinate system, as well as measurement antenna polarization along the direction of motion of the zenith axis rotation.
φ
Azimuth angle in the spherical co-ordinate system, as well as measurement antenna polarization along the direction of motion of the azimuth axis rotation.
3.3 Abbreviations p. 8
For the purposes of the present document, the abbreviations given in TR 21.905 and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in TR 21.905.
AoA
Angle of Arrival
CATR
Compact Antenna Test Range
DFF
Direct Far Field
DUT
Device Under Test
EIS
Effective Isotropic Sensitivity
EIRP
Effective (or equivalent) isotropic radiated power
FR2
Frequency Range
IFF
Indirect Far Field
MU
Measurement Uncertainty
NR
New Radio
NSA
Non-standalone
OTA
Over The Air
RSRP
Reference signal receive power
SNR
Signal-to-Noise Ratio
SGH
Standard Gain Horn
TRP
Total Radiated Power
UBF
UE beam lock function
UE
User Equipment
4 General p. 9
4.1 Objective p. 9
In Rel-17 WI on further enhancements on MIMO for NR (Acronym: NR_FeMIMO), the objective is to extend the specification to support several aspects on NR MIMO including simultaneous multi-Rx chain DL reception. With considering the objective to define new requirements for the UE with multi-Rx chain DL reception, the FR2 test methods for RF, RRM and demodulation need to be enhanced. This document is to define the enhanced test methods for the verifications of these new requirements for FR2 UE with multi-Rx chain DL receptions.
4.2 Devices Type p. 9
The following device types are considered in the scope of this study:
- Smartphone
- Tablet
- Wearable devices
- Vehicular mounted device
- Fixed Wireless Access (FWA) terminal
- Other UE types are not precluded
