ETSI TS 138 561 V19.0.0 (2026-04)

5G; NR; User Equipment (UE) conformance specification; UE TRP (Total Radiated Power) and TRS (Total Radiated Sensitivity) requirements and test methodologies for FR1 (NR SA and EN-DC) (3GPP TS 38.561 version 19.0.0 Release 19)

RTS/TSGR-0538561vj00

General Information

• Status: Not Published
• Technical Committee: 3GPP RAN 5 - Mobile Terminal Conformance Testing (formely T1)
• Current Stage: 12 - Citation in the OJ (auto-insert)
• Completion Date: 02-Apr-2026

Standards Content (Sample)

TECHNICAL SPECIFICATION
5G;
NR;
User Equipment (UE) conformance specification;
UE TRP (Total Radiated Power) and TRS (Total Radiated
Sensitivity) requirements and test methodologies for FR1 (NR
SA and EN-DC)
(3GPP TS 38.561 version 19.0.0 Release 19)

3GPP TS 38.561 version 19.0.0 Release 19 1 ETSI TS 138 561 V19.0.0 (2026-04)

Reference
RTS/TSGR-0538561vj00
Keywords
5G
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ETSI
3GPP TS 38.561 version 19.0.0 Release 19 2 ETSI TS 138 561 V19.0.0 (2026-04)
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3GPP TS 38.561 version 19.0.0 Release 19 3 ETSI TS 138 561 V19.0.0 (2026-04)
Contents
Intellectual Property Rights . 2
Foreword . 7
1 Scope . 9
2 References . 9
3 Definitions of terms, symbols, and abbreviations . 10
3.1 Terms . 10
3.2 Symbols . 10
3.3 Abbreviations . 10
4 General . 11
4.1 Relationship between minimum requirements and test requirements . 11
4.2 Applicability of minimum requirements . 11
4.2.1 General . 11
4.2.1 UE mechanical modes . 11
4.3 Applicability rules for testing of FR1 SA and NSA UEs . 11
4.4 Applicability rules for testing of power class capability of UEs . 12
4.5 Applicability rules for test methods. 12
5 Frequency Bands . 12
5.1 General . 12
5.2 Operating Bands . 12
5.2.1 FR1 Standalone Operating bands . 12
5.2.2 FR1 EN-DC band combinations . 13
5.3 Test parameters for each band . 15
6 FR1 Transmitter (TRP) Performance . 19
6.1 General . 19
6.2 TRP Performance for Handheld UE . 20
6.2.1 TRP Performance for Handheld UE for FR1 (NR SA and EN-DC) . 20
6.2.1.1 Total Radiated Power (TRP) in Browsing Mode with Hand Phantom . 20
6.2.1.1.1 Total Radiated Power (TRP) for FR1 NR Standalone (SA) in Browsing Mode with Hand
Phantom . 20
6.2.1.2 Total Radiated Power (TRP) in Talk Mode with Head and Hand Phantom . 23
6.2.1.2.1 Total Radiated Power (TRP) for FR1 NR Standalone (SA) in Talk Mode with Head and
Hand Phantom . 23
7 FR1 Receiver (TRS) Performance . 27
7.1 General . 27
7.2 TRS Performance for Handheld UE . 27
7.2.1 TRS Performance for Handheld UE for FR1 (NR SA and EN-DC) . 27
7.2.1.1 Total Radiated Sensitivity (TRS) in Browsing Mode with Hand Phantom . 27
7.2.1.1.1 Total Radiated Sensitivity (TRS) for FR1 NR Standalone (SA) in Browsing Mode with Hand
Phantom . 27
7.2.1.2 Total Radiated Sensitivity (TRS) in Talk Mode with Head and Hand Phantom . 30
7.2.1.2.1 Total Radiated Sensitivity (TRS) for FR1 NR Standalone (SA) in Talk Mode with Head and
Hand Phantom . 30
Annex A (normative): Test methodology . 34
A.1 General . 34
A.2 UE configuration . 34
A.2.1 General . 34
A.2.2 UE configuration for TRP test . 34
A.2.3 UE configuration for TRS test . 34
A.3 Test system of Anechoic Chamber method . 35
A.3.1 System setup . 35
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A.3.2 Calibration procedure . 35
A.3.3 Test procedure . 36
A.3.3.1 General . 36
A.3.3.2 TRP Test procedure . 36
A.3.3.3 TRS Test procedure . 37
A.3.3.3.1 Alternate EIS Search Procedure . 37
A.3.3.3.1.1 EIS linearization using polynomial interpolation . 37
A.3.3.3.2 Alternate TRS Test procedure Using Low UL Power . 38
A.3.3.4 TRP/TRS OTA test based on averaging multiple split measurement grids . 39
A.3.4 Minimum Range Length . 42
A.3.5 Definition of TRP and TRS for AC . 43
A.3.5.1 Total Radiated Power (TRP) . 43
A.3.5.2 Total Radiated Sensitivity (TRS) . 44
A.3.6 TAS OFF verification procedure (Informative) . 44
A.3.6 Alternative RC test method . 45
A.3.6.1 General . 45
A.3.6.2 Test system and test procedure . 45
A.3.6.3 Preliminary example MU of RC . 45
A.3.7 Ripple test for Quiet Zone . 45
A.3.7.1 General . 45
A.3.7.2 Ripple test procedure . 46
A.4 (Informative): Estimation of measurement uncertainty. 50
A.4.1 General . 50
A.4.2 Measurement uncertainty contribution descriptions . 51
A.4.2.1 Mismatch uncertainty . 51
A.4.2.1.1 Mismatch uncertainty between measurement receiver / communication tester and the
measurement antenna . 51
A.4.2.1.1.1 Mismatch uncertainty through the connector between two elements . 51
A.4.2.1.1.2 Mismatch uncertainty due to the interaction of several elements . 52
A.4.2.1.1.3 Total combined mismatch uncertainty . 53
A.4.2.1.2 Mismatch uncertainty of the RF relay . 53
A.4.2.1.2.1 First part: RF Relay switched on the co-polarized signal . 54
A.4.2.1.2.1.1 The mismatch through the connector between two elements . 54
A.4.2.1.2.1.2 Mismatch due to the interaction between two elements or more . 54
A.4.2.1.2.2 Second part: RF relay switched on the cross-polarized signal . 55
A.4.2.1.2.2.1 The mismatch through the connector between two elements . 55
A.4.2.1.2.2.2 Mismatch due to the interaction between two elements or more . 55
A.4.2.1.2.3 Total combined mismatch uncertainty . 56
A.4.2.2 Insertion loss . 56
A.4.2.2.1 Insertion loss of the measurement antenna cable . 56
A.4.2.2.2 Insertion loss of the measurement antenna attenuator (if used) . 56
A.4.2.2.3 Insertion loss of the RF relays (if used) . 56
A.4.2.2.4 Insertion loss: calibration antenna feed cable . 56
A.4.2.2.5 Insertion loss: calibration antenna attenuator (if used) . 56
A.4.2.3 Influence of the antenna cable . 57
A.4.2.3.1 Measurement antenna cable . 57
A.4.2.3.2 Calibration antenna cable . 57
A.4.2.4 Measurement receiver: uncertainty of the absolute level . 57
A.4.2.5 Communication tester: uncertainty of the absolute level . 57
A.4.2.6 Sensitivity measurement: output level step resolution . 57
A.4.2.7 Measurement distance . 57
A.4.2.7.1 Offset of phase centre from axis(es) of rotation . 58
A.4.2.7.1.1 Offset of DUT phase centre from axis(es) of rotation . 58
A.4.2.7.1.2 Offset of calibration antenna phase centre from axis(es) of rotation . 58
A.4.2.7.2 Mutual coupling . 58
A.4.2.7.3 Phase curvature . 59
A.4.2.8 Quality of quiet zone. 59
A.4.2.9 DUT Tx-power drift. 59
A.4.2.10 DUT sensitivity drift . 60
A.4.2.11 Uncertainty related to the use of phantoms . 60
A.4.2.11.1 Uncertainty from using different types of SAM phantom . 60
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A.4.2.11.2 Simulated tissue liquid uncertainty . 60
A.4.2.11.3 Uncertainty of dielectric properties and shape of the hand phantom . 61
A.4.2.11.4 Uncertainty from using different types of Laptop Ground Plane phantom . 62
A.4.2.11.5 Positioning Uncertainty from using Phantoms . 62
A.4.2.12 Coarse sampling grid . 62
A.4.2.13 Random uncertainty . 63
A.4.2.14 Frequency response. 63
A.4.2.15 Uncertainty of network analyser . 64
A.4.2.16 Uncertainty of the gain/efficiency of the calibration antenna . 64
A.4.3 Total Radiated Power (TRP) . 64
A.4.3.1 Anechoic Chamber Method . 64
A.4.4 Total Radiated Sensitivity (TRS) . 70
A.4.4.1 Anechoic Chamber Method . 70
Annex B (normative): Phantoms definition and Positioning . 78
B.1 General . 78
B.2 Phantom Definition . 78
B.2.1 Head Phantom . 78
B.2.2 PDA Grip Hand Phantom . 78
B.2.3 Wide Grip Hand Phantom . 78
B.2.4 Forearm Phantom . 79
B.3 UE positioning guidelines . 79
B.3.1 Hand phantom only (Browsing mode) . 79
B.3.1.1 Wide Grip Hand . 80
B.3.1.2 PDA Grip Hand . 80
B.3.2 Head and Hand phantom (Talk Mode) . 81
B.3.2.1 General . 81
B.3.2.2 Wide Grip Hand and Head . 83
B.3.2.3 PDA Grip Hand and Head . 83
B.3.3 Forearm phantom (Wrist-worn Mode) . 83
B.3.3.1 General . 83
B.3.3.2 Forearm phantom positioning in the chamber . 83
B.3.3.3 Wrist-Worn RedCap Device mounted on the Forearm Phantom . 83
B.3.4 Head phantom for Head-mounted devices . 85
B.3.4.1 General . 85
B.3.5 Hand phantom only for NTN scenario 2 . 85
Annex C (normative): Environmental requirements . 89
C.1 General . 89
C.2 Environmental . 89
C.2.1 Temperature . 89
C.2.2 Voltage . 89
Annex D (normative): Maximum uncertainty of test system and test tolerance . 90
D.1 Maximum uncertainty of test system . 90
D.2 Test Tolerances . 90
Annex E (informative): NTN OTA Test methodology . 91
E.1 General . 91
E.1.1 NTN Device types . 91
E.1.2 NTN UE use scenarios . 91
E.1.3 NTN operation bands and test parameters . 91
E.2 NTN performance metrics . 94
E.2.1 General . 94
E.2.2 Total Radiated Power (TRP) . 94
E.2.3 Total Radiated Sensitivity (TRS) . 94
E.2.4 Partial Radiated Power (PRP) . 94
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E.2.4.1 Upper Partial Radiated Power Integrated over ±60° Sector (UPRP ) . 94
±60
E.2.4.2 Upper Hemisphere Partial Radiated Power (UHPRP) . 95
E.2.5 Partial Radiated Sensitivity (PRS) . 96
E.2.5.1 Upper Partial Radiated Sensitivity Integrated over ±60° Sector (UPRS ) . 96
±60
E.2.5.2 Upper Hemisphere Partial Radiated Sensitivity (UHPRS) . 97
E.3 Test Procedure for NTN UE . 97
E.3.1 General . 97
E.3.2 TRP and PRP test procedure for NR NTN . 98
E.3.2.1 UE configuration . 98
E.3.2.2 Test Procedure . 99
E.3.3 TRP and PRP test procedure for IoT-NTN . 99
E.3.3.1 UE configuration . 99
E.3.3.2 Test Procedure for NB-IoT NTN . 99
E.3.4 TRS and PRS test procedure for NR NTN . 100
E.3.4.1 UE configuration . 100
E.3.4.2 Test Procedure . 100
E.3.5 TRS and PRS test procedure for IoT-NTN . 101
E.3.5.1 UE configuration . 101
E.3.5.2 Test Procedure for NB-IoT NTN . 101
E.4 NTN MU assessment. 102
E.4.1 General . 102
E.4.2 MU for TRP/PRP test . 102
E.4.3 MU for TRS/PRS test . 102
Annex F (informative): Change History . 103
History . 106

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3GPP TS 38.561 version 19.0.0 Release 19 7 ETSI TS 138 561 V19.0.0 (2026-04)
Foreword
This Technical Specification has been produced by the 3rd Generation Partnership Project (3GPP).
The contents of the present document are subject to continuing work within the TSG and may change following formal
TSG approval. Should the TSG modify the contents of the present document, it will be re-released by the TSG with an
identifying change of release date and an increase in version number as follows:
Version x.y.z
where:
x the first digit:
1 presented to TSG for information;
2 presented to TSG for approval;
3 or greater indicates TSG approved document under change control.
y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections,
updates, etc.
z the third digit is incremented when editorial only changes have been incorporated in the document.
In the present document, modal verbs have the following meanings:
shall indicates a mandatory requirement to do something
shall not indicates an interdiction (prohibition) to do something
The constructions "shall" and "shall not" are confined to the context of normative provisions, and do not appear in
Technical Reports.
The constructions "must" and "must not" are not used as substitutes for "shall" and "shall not". Their use is avoided
insofar as possible, and they are not used in a normative context except in a direct citation from an external, referenced,
non-3GPP document, or so as to maintain continuity of style when extending or modifying the provisions of such a
referenced document.
should indicates a recommendation to do something
should not indicates a recommendation not to do something
may indicates permission to do something
need not indicates permission not to do something
The construction "may not" is ambiguous and is not used in normative elements. The unambiguous constructions
"might not" or "shall not" are used instead, depending upon the meaning intended.
can indicates that something is possible
cannot indicates that something is impossible
The constructions "can" and "cannot" are not substitutes for "may" and "need not".
will indicates that something is certain or expected to happen as a result of action taken by an agency
the behaviour of which is outside the scope of the present document
will not indicates that something is certain or expected not to happen as a result of action taken by an
agency the behaviour of which is outside the scope of the present document
might indicates a likelihood that something will happen as a result of action taken by some agency the
behaviour of which is outside the scope of the present document
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might not indicates a likelihood that something will not happen as a result of action taken by some agency
the behaviour of which is outside the scope of the present document
In addition:
is (or any other verb in the indicative mood) indicates a statement of fact
is not (or any other negative verb in the indicative mood) indicates a statement of fact
The constructions "is" and "is not" do not indicate requirements.

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3GPP TS 38.561 version 19.0.0 Release 19 9 ETSI TS 138 561 V19.0.0 (2026-04)
1 Scope
The present document specifies details of conformance testing of UE TRP (Total Radiated Power) and TRS (Total
Radiated Sensitivity) requirements and test methodologies for FR1 (NR SA and EN-DC).
2 References
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] 3GPP TS 38.161: “User Equipment (UE) TRP (Total Radiated Power) and TRS (Total Radiated
Sensitivity) requirements; Range 1 Standalone and Range 1 Interworking operation with other
radios
[2] 3GPP TS 38.508-1: "5GS; User Equipment (UE) conformance specification; Part 1: Common test
environment "
[3] 3GPP TS 38.101-1: "NR; User Equipment (UE) radio transmission and reception; Part 1: Range 1
Standalone".
[4] JCGM 100:2008: “Evaluation of measurement data — Guide to the expression of uncertainty in
measurement”.
[5] ETSI TR 102 273-1-1: “Electromagnetic compatibility and Radio spectrum Matters (ERM);
Improvement on Radiated Methods of Measurement (using test site) and evaluation of the
corresponding measurement uncertainties; Part 1: Uncertainties in the measurement of mobile
radio equipment characteristics; Sub-part 1: Introduction”.
[6] ETSI TR 100 028-2: “ElectroMagnetic Compatibility and Radio Spectrum Matters (ERM);
Uncertainties in the measurement of mobile radio equipment characteristics; Part 2”.
[7] ETSI TR 102 273-1-2: “Electromagnetic compatibility and Radio spectrum Matters (ERM);
Improvement on Radiated Methods of Measurement (using test site) and evaluation of the
corresponding measurement uncertainties; Part 1: Uncertainties in the measurement of mobile
radio equipment characteristics; Sub-part 2: Examples and annexes”.
[8] CTIA Certification™: “CTIA Certification Test Plan for Wireless Device Over-the-Air
Performance, CTIA 01.70: Measurement Uncertainty”, latest active version available at:
https://ctiacertification.org/test-plans/
[9] Foegelle, M.D., “The Surface Standard Deviation Method for TRP Measurement Uncertainty”,
25th Proceedings of the Antenna Measurement Techniques Association (AMTA 2003), A03-027
[10] 3GPP TR 38.834: “Measurements of User Equipment (UE) Over-the-Air (OTA) performance for
NR FR1; Total Radiated Power (TRP) and Total Radiated Sensitivity (TRS) test methodology
(Release 17)”
[11] 3GPP TS 38.521-1: "NR; User Equipment (UE) conformance specification; Radio transmission
and reception; Part 1: Range 1 Standalone"
[12] CTIA Certification™: “CTIA Certification Test Plan for Wireless Device Over-the-Air
Performance, CTIA 01.72: Near-Field Phantoms”, latest active version available at:
https://ctiacertification.org/test-plans/
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[13] CTIA Certification™: “CTIA Certification Test Plan for Wireless Device Over-the-Air
Performance, CTIA 01.71 Device Setup and Positioning Guidelines”, latest active version
available at: https://ctiacertification.org/test-plans/
[14] 3GPP TS 38.521-3: "NR; User Equipment (UE) conformance specification; Radio transmission
and reception; Part 3: Range 1 and Range 2 Interworking operation with other radios"
[15] 3GPP TS 37.544: "Universal Terrestrial Radio Access (UTRA) and Evolved UTRA (E-UTRA);
User Equipment (UE) Over The Air (OTA) performance; Conformance testing"
[16] 3GPP TS 21.905: “Vocabulary for 3GPP Specifications”
[17] 3GPP TS 38.101-3: “NR; User Equipment (UE) radio transmission and reception; Part 3: Range 1
and Range 2 Interworking operation with other radios”
[18] 3GPP TR 38.870, “Enhanced Over-the-Air (OTA) test methods for NR FR1 Total Radiated Power
(TRP) and Total Radiated Sensitivity (TRS) (Release 18)”
3 Definitions of terms, symbols, and abbreviations
3.1 Terms
For the purposes of the present document, the terms given in 3GPP TR 21.905 [16] and the following apply. A term
defined in the present document takes precedence over the definition of the same term, if any, in 3GPP TR 21.905 [1].
Browsing mode usage: This mode corresponds to “data” mode, the device is tested via hand-only phantoms.
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 Browsing mode usage and Talk mode usage
for the same UE.
Talk mode usage: This mode corresponds to “talk” mode, the device is tested via head & hand phantoms.
Wrist-worn mode usage: This mode corresponds to wearable device for wrist-worn mode, the device is tested via
forearm phantoms.
3.2 Symbols
For the purposes of the present document, the following symbols apply:
TRP The average measured total radiated power of low, mid and high channel. When hand phantom is
average
involved, the average is performed with low, mid and high channel from both hand left and hand
right.
TRS The average measured total radiated sensitivity of low, mid and high channel. When hand phantom
average
is involved, the average is performed with low, mid and high channel from both hand left and hand
right.
3.3 Abbreviations
For the purposes of the present document, the abbreviations given in 3GPP TR 21.905 [1] and the following apply. An
abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in
3GPP TR 21.905 [1].
AC Anechoic Chamber
BHHL Beside Head and Hand Left Side (Head and Hand Phantom)
BHHR Beside Head and Hand Right Side (Head and Hand Phantom)
CA Carrier Aggregation
DUT Device Under Test
E-UTRA Evolved UTRA
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EIRP Effective Isotropic Radiated Power
EUT Equipment Under Test
FR1 RF Frequency Range 1
FS Free Space
HL Hand Left (Hand Phantom Only)
HR Hand Right (Hand Phantom Only)
MPR Allowed maximum power reduction
NR New Radio
NSA Non-Standalone, a mode of operation where operation of another radio is assisted with another
radio
OTA Over The Air
QZ Quiet Zone
RedCap Reduced Capability
SA Standalone
SS System Simulator
TAA Time-Averaging Algorithm
TAS Transmit Antenna Switching
TRP Total Radiated Power
TRS Total Radiated Sensitivity
TxD Tx Diversity
UE User Equipment
UL MIMO Uplink Multiple Antenna transmission
4 General
4.1 Relationship between minimum requirements and test
requirements
The Minimum Requirements given in TS 38.161 [1] make no allowance for measurement uncertainty. This test
specification will define test tolerances for FR1 TRP TRS. The test tolerances are used to relax the minimum
requirements in TS 38.161 [1] to create test requirements.
4.2
...