Content for TS 38.151 Word version: 18.1.0

3.1 Terms 3.2 Symbols 3.3 Abbreviations
...

1 Scope p. 9

The present document establishes the Multiple Input Multiple Output (MIMO) Over-the-Air (OTA) performance requirements for NR UEs operating on frequency Range 1 and frequency rang 2, for NR standalone (SA) and NR non-standalone (NSA) operation mode. The corresponding test methodologies are also presented in the Annex of this Technical Specification.

2 References p. 9

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]

TR 38.827: "Study on radiated metrics and test methodology for the verification of multi-antenna reception performance of NR User Equipment (UE)".

[3]

TS 38.101-1: "NR; User Equipment (UE) radio transmission and reception; Part 1: Range 1 Standalone"

[4]

TS 38.101-2: "NR; User Equipment (UE) radio transmission and reception; Part 2: Range 2 Standalone"

[5]

TS 38.101-3: "NR; User Equipment (UE) radio transmission and reception; Part 3: Range 1 and Range 2 Interworking operation with other radios"

[6]

TS 36.101: "Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE) radio transmission and reception"

[7]

TS 38.508-1: "5GS; User Equipment (UE) conformance specification; Part 1: Common test environment"

[8]

TR 38.901: "Study on channel model for frequencies from 0.5 to 100 GHz"

[9]

F. Zhang, L. Hentilä, P. Kyösti and W. Fan, "Millimeter-wave New Radio Test Zone Validation for MIMO Over-the-air Testing," in IEEE Transactions on Antennas and Propagation, doi: 10.1109/TAP.2021.3111326.

[10]

TS 38.101-4: "NR; User Equipment (UE) radio transmission and reception; Part 4: Performance requirements".

[11]

TS 38.551: "NR; User Equipment (UE) Multiple Input Multiple Output (MIMO) Over-the-Air (OTA) performance; Conformance testing"

3 Definitions of terms, symbols and abbreviations p. 10

3.1 Terms p. 10

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.

FS:

UE used in a free space configuration.

Handheld UE:

A UE intended to be used in hand held scenario.

MIMO Average Spherical Coverage:

An averaged sensitivity of best 18 FR2 MIMO OTA sensitivity values within the 3D sphere with constant-density points for PC3 device.

Primary mechanical mode: The mode that is most often used for a specific user scenario. Every terminal has at least one primary mechanical mode, if multiple modes are supported, different primary mechanical modes may be applicable for different user scenarios, e.g., different primary mechanical modes for Free Space and Hand phantom usage for the same UE.

PSP (PAS Similarity Percentage):

The similarity of the PAS produced by the OTA system and the reference PAS, which is presented by the Total Variation Distance (TVD) of power angular spectrum (PAS). PSP is defined as (1-TVD)*100%. PSP=100% denotes full similarity and PSP=0% denotes full dissimilarity.

3.2 Symbols p. 10

For the purposes of the present document, the following symbols apply:

P_RS-EPRE-MAX

Maximum downlink RS-EPRE

3.3 Abbreviations p. 10

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

Azimuth angle Of Arrival

AOD

Azimuth angle Of Departure

Base Station

CDL

Clustered Delay Line

Continuous Wave

DML

Data Mode Landscape

DMP

Data Mode Portrait

DMSU

Data Mode Screen Up

DUT

Device Under Test

EUT

Equipment Under Test

FR1

Frequency Range 1

FR2

Frequency Range 2

Free Space

MASC

MIMO Average Spherical Coverage

MIMO

Multiple Input Multiple Output

MPAC

Multi-Probe Anechoic Chamber

New Radio

NSA

Non-Standalone, a mode of operation where operation of an other radio is assisted with an other radio

OTA

Over The Air

PAS

Power Angular Spectrum

PDP

Power Delay Profile

PSP

PAS Similarity Percentage

RS-EPRE

Reference Signal-Energy Per Resource Element

System Simulator

SSS

Secondary Synchronization Signal

TRMS

Total Radiated Multi-antenna Sensitivity

User Equipment

UMa

Urban Macro

UMi

Urban Micro

XPR

Cross-Polarization Ratio

ZOA

Zenith angle Of Arrival

ZOD

Zenith angle Of Departure

ZSA

Zenith angle Spread of Arrival

ZSD

Zenith angle Spread of Departure

4 General p. 11

4.1 Relationship between minimum requirements and test requirements p. 11

The Minimum Requirements given in this specification make no allowance for measurement uncertainty. The test specification in RAN5 will define test tolerances for FR1 and FR2 MIMO OTA. The test tolerances are used to relax the minimum requirements in this specification to create test requirements.

4.2 Applicability of minimum requirements p. 11

The MIMO OTA minimum requirements apply only to the primary mechanical mode of UE which is declared by the manufacturer if the UE can support multiple mechanical modes.

The minimum requirements apply only to the UE under normal environmental conditions specified in Annex F.

4.3 Applicability rules for testing of SA and NSA UEs p. 11

The applicability and test coverage rules for Non-Standalone (NSA) only capable UEs shall include the following:

For FR1 NSA (EN-DC) only capable UEs, testing is not required.
For FR2 NSA (EN-DC) only capable UEs, for each FR2 NR band supported by the device, test the UE in EN-DC mode using any one example configuration containing that NR band or configuration declaration decision tree as per recommended MIMO OTA test procedures in this specification.

The applicability and test coverage rules for Standalone (SA) and NSA (EN-DC) capable UEs shall include the following:

For FR1 UEs, for each NR band in a device, test the UE in Standalone Mode as per the TRMS test procedures in this specification. This shall also fulfil coverage for all EN-DC minimum performance requirements for that NR band and need not be retested in EN-DC mode.
For FR2 UEs, for each FR2 NR band supported by the device, test the UE in any of SA modes including FR2 only mode, FR1+FR2 NR-DC mode and FR1+FR2 NR-CA mode using any one example configuration containing that NR band. This shall fulfil coverage for FR2 MIMO OTA requirements for that NR band and need not be retested in EN-DC mode.