ETSI TS 138 115-2 V17.8.0 (2026-04)

5G; NR; Repeater conformance testing - Part 2: Radiated conformance testing (3GPP TS 38.115-2 version 17.8.0 Release 17)

RTS/TSGR-0438115-2vh80

General Information

• Status: Not Published
• Technical Committee: 3GPP RAN 4 - Specification for radio performance
• Current Stage: 12 - Citation in the OJ (auto-insert)
• Completion Date: 28-Apr-2026

Relations

• Replaces: ETSI TS 138 115-2 V17.2.0 (2023-07) - 5G; NR; Repeater conformance testing - Part 2: Radiated conformance testing (3GPP TS 38.115-2 version 17.2.0 Release 17)
• Replaces: ETSI TS 138 115-2 V17.4.0 (2024-01) - 5G; NR; Repeater conformance testing - Part 2: Radiated conformance testing (3GPP TS 38.115-2 version 17.4.0 Release 17)
• Replaces: ETSI TS 138 115-2 V17.7.0 (2025-07) - 5G; NR; Repeater conformance testing - Part 2: Radiated conformance testing (3GPP TS 38.115-2 version 17.7.0 Release 17)
• Replaces: ETSI TS 138 115-2 V17.5.0 (2024-05) - 5G; NR; Repeater conformance testing - Part 2: Radiated conformance testing (3GPP TS 38.115-2 version 17.5.0 Release 17)
• Replaces: ETSI TS 138 115-2 V17.6.0 (2025-04) - 5G; NR; Repeater conformance testing - Part 2: Radiated conformance testing (3GPP TS 38.115-2 version 17.6.0 Release 17)
• Replaces: ETSI TS 138 115-2 V17.3.0 (2023-10) - 5G; NR; Repeater conformance testing - Part 2: Radiated conformance testing (3GPP TS 38.115-2 version 17.3.0 Release 17)
• Replaces: ETSI TS 138 115-2 V17.1.0 (2023-05) - 5G; NR; Repeater conformance testing - Part 2: Radiated conformance testing (3GPP TS 38.115-2 version 17.1.0 Release 17)
• Replaces: ETSI TS 138 115-2 V17.0.0 (2023-01) - 5G; NR; Repeater conformance testing - Part 2: Radiated conformance testing (3GPP TS 38.115-2 version 17.0.0 Release 17)

Standards Content (Sample)

TECHNICAL SPECIFICATION
5G;
NR;
Repeater conformance testing -
Part 2: Radiated conformance testing
(3GPP TS 38.115-2 version 17.8.0 Release 17)

3GPP TS 38.115-2 version 17.8.0 Release 17 1 ETSI TS 138 115-2 V17.8.0 (2026-04)

Reference
RTS/TSGR-0438115-2vh80
Keywords
5G
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ETSI
3GPP TS 38.115-2 version 17.8.0 Release 17 2 ETSI TS 138 115-2 V17.8.0 (2026-04)
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Legal Notice
This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP).
The present document may refer to technical specifications or reports using their 3GPP identities. These shall be
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Modal verbs terminology
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ETSI
3GPP TS 38.115-2 version 17.8.0 Release 17 3 ETSI TS 138 115-2 V17.8.0 (2026-04)
Contents
Intellectual Property Rights . 2
Legal Notice . 2
Modal verbs terminology . 2
Foreword . 7
1 Scope . 9
2 References . 9
3 Definitions of terms, symbols and abbreviations . 10
3.1 Terms . 10
3.2 Symbols . 11
3.3 Abbreviations . 12
4 General radiated test conditions and declarations . 13
4.1 Measurement uncertainties and test requirements . 13
4.1.1 General . 13
4.1.2 Acceptable uncertainty of Test System . 13
4.1.2.1 General . 13
4.1.2.2 Radiated characteristics measurements . 13
4.1.3 Interpretation of measurement results . 14
4.2 Radiated requirement reference points . 15
4.3 Repeater classes . 15
4.3.1 Repeater class for downlink . 15
4.3.2 Repeater class for uplink . 15
4.4 Regional requirements . 16
4.5 Repeater configurations . 16
4.5.1 Downlink configurations . 16
4.5.2 Uplink configurations . 16
4.5.3 Power supply options . 17
4.6 Manufacturer's declarations . 17
4.7 Test configurations . 21
4.7.1 General . 21
4.7.2 Test signal configurations . 21
4.7.2.1 Test signal used to build Test Configurations . 21
4.7.2.2 RTC1: Contiguous spectrum operation . 21
4.7.2.2.1 RTC1 generation . 22
4.7.2.2.2 RTC1 power allocation . 22
4.7.2.4 RTC2: Non-contiguous spectrum operation . 22
4.7.2.4.1 RTC2 generation . 22
4.7.2.4.2 RTC2 power allocation . 22
4.8 Applicability of requirements . 22
4.9 RF channels and test models . 23
4.9.1 RF channels . 23
4.9.2 Test models . 24
4.9.2.1 General . 24
4.9.2.2 FR2 test models for repeater type 2-O for DL . 24
4.9.2.3 FR2 test models for repeater type 2-O for UL . 24
4.9.2.3.1 FR2 test model 1.1 (RUL-FR2-TM1.1) . 25
4.9.2.3.2 FR2 test model 2 (RUL-FR2-TM2) . 25
4.9.2.3.2a FR2 test model 2a (RUL-FR2-TM2a) . 26
4.9.2.3.3 FR2 test model 3.1 (RUL-FR2-TM3.1) . 26
4.9.2.3.4 FR2 test model 3.1a (RUL-FR2-TM3.1a) . 26
4.9.2.4 Data content of physical channels and signals for RUL-FR2-TM . 26
4.9.2.3.1 PUSCH . 27
4.10 Requirements for contiguous and non-contiguous spectrum . 27
4.11 Format and interpretation of tests . 27
4.12 Reference coordinate system . 28
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5 Operating bands and channel arrangement . 29
6 Radiated characteristics . 29
6.1 General . 29
6.2 OTA output power. 30
6.2.1 General . 30
6.2.2 OTA output power (EIRP) . 30
6.2.2.1 Definition and applicability . 30
6.2.2.2 Minimum requirement . 31
6.2.2.3 Test purpose . 31
6.2.2.4 Method of test . 31
6.2.2.4.1 Initial conditions . 31
6.2.2.4.2 Procedure . 32
6.2.2.5 Test requirement . 32
6.2.3 OTA repeater output power (TRP) . 32
6.2.3.1 Definition and applicability . 32
6.2.3.2 Minimum requirement . 33
6.2.3.3 Test purpose . 33
6.2.3.4 Method of test . 33
6.2.3.4.1 Initial conditions . 33
6.2.3.4.2 Procedure . 33
6.2.3.5 Test requirement . 34
6.3 OTA frequency stability . 34
6.3.1 Definition and applicability . 34
6.3.2 Minimum Requirement . 34
6.3.3 Test purpose . 34
6.3.4 Method of test . 34
6.3.5 Test Requirements . 34
6.4 OTA out of band gain . 34
6.4.1 Definition and applicability . 34
6.4.2 Minimum Requirement . 35
6.4.3 Test purpose . 35
6.4.4 Method of test . 35
6.4.4.1 Initial conditions . 35
6.4.4.2 Procedure . 35
6.4.5 Test Requirements . 35
6.5 OTA unwanted emissions . 36
6.5.1 General . 36
6.5.2 OTA Adjacent Channel Leakage Power Ratio (ACLR) . 36
6.5.2.1 Definition and applicability . 36
6.5.2.2 Minimum requirement . 36
6.5.2.3 Test purpose . 36
6.5.2.4 Method of test . 37
6.5.2.4.1 Initial conditions . 37
6.5.2.4.2 Procedure . 37
6.5.2.5 Test requirements . 37
6.5.3 OTA operating band unwanted emissions . 41
6.5.3.1 Definition and applicability . 41
6.5.3.2 Minimum requirement . 41
6.5.3.3 Test purpose . 42
6.5.3.4 Method of test . 42
6.5.3.4.1 Initial conditions . 42
6.5.3.4.2 Procedure . 42
6.5.3.4 Test requirements . 43
6.5.3.4.1 OTA operating band unwanted emission limits (Category A) . 43
6.5.3.4.2 OTA operating band unwanted emission limits (Category B) . 44
6.5.3.4.3 Additional OTA operating band unwanted emission requirements . 45
6.5.3.4.3.1 Protection of Earth Exploration Satellite Service . 45
6.5.4 OTA transmitter spurious emissions . 45
6.5.4.1 Definition and applicability . 45
6.5.4.2 Minimum requirement . 45
6.5.4.3 Test purpose . 45
ETSI
3GPP TS 38.115-2 version 17.8.0 Release 17 5 ETSI TS 138 115-2 V17.8.0 (2026-04)
6.5.4.4 Method of test . 45
6.5.4.4.1 Initial conditions . 45
6.5.4.4.2 Procedure . 45
6.5.4.5 Test requirements . 46
6.5.4.5.1 General . 46
6.5.4.5.2 OTA transmitter spurious emissions (Category A) . 46
6.5.4.5.3 OTA transmitter spurious emissions (Category B) . 47
6.5.4.5.4 Additional OTA transmitter spurious emissions requirements . 47
6.5.4.5.4.1 Limits for protection of Earth Exploration Satellite Service . 47
6.6 OTA Repeater Error Vector Magnitude . 48
6.6.1 Downlink repeater error vector magnitude . 48
6.6.1.1 General . 48
6.6.1.2 Minimum requirements . 48
6.6.1.3 Test purpose . 48
6.6.1.4 Method of test . 48
6.6.1.4.1 Initial conditions . 48
6.6.1.4.2 Procedure . 49
6.6.1.5 Test requirement . 50
6.6.2 Uplink Repeater error vector magnitude . 50
6.6.2.1 General . 50
6.6.2.2 Minimum requirement . 50
6.6.2.3 Test purpose . 51
6.6.2.4 Method of test . 51
6.6.2.4.1 Initial conditions . 51
6.6.2.4.2 Procedure . 51
6.6.2.5 Test requirement . 51
6.7 OTA input intermodulation . 52
6.7.1 Definition and applicability . 52
6.7.1.1 General . 52
6.7.1.2 Minimum requirements . 52
6.7.1.3 Test purpose . 52
6.7.1.4 Method of test . 52
6.7.1.4.1 Initial conditions . 52
6.7.1.4.2 Procedure . 52
6.7.1.5 Test requirements . 53
6.8 OTA Adjacent Channel Rejection Ratio (ACRR) . 53
6.8.1 Definitions and applicability . 53
6.8.2 Co-existence with NR . 53
6.8.2.1 Minimum requirements . 53
6.8.2.2 Test purpose . 54
6.8.2.3 Method of test . 54
6.8.2.3.1 Initial conditions . 54
6.8.2.3.2 Procedure . 54
6.8.2.3.3 Test Requirements . 55
6.9 OTA transmit ON/OFF power. 56
6.9.1 OTA transmitter OFF power . 56
6.9.1.1 Definition and applicability . 56
6.9.1.2 Minimum requirement . 56
6.9.1.3 Test purpose . 56
6.9.1.4 Method of test . 56
6.9.1.5 Test requirements . 56
6.9.2 OTA transient period . 56
6.9.2.1 Definition and applicability . 56
6.9.2.2 Minimum requirement . 57
6.9.2.3 Test purpose . 57
6.9.2.4 Method of test . 57
6.9.2.4.1 Initial conditions . 57
6.9.2.4.2 Procedure . 57
6.9.2.5 Test requirements . 57
Annex A (normative): Repeater stimulus signals . 59
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A.1 Repeater stimulus signal 1 . 59
A.2 Repeater stimulus signal 2 . 59
A.3 Repeater stimulus signal spectral purity requirements . 59
Annex B (normative): Environmental requirements for the Repeater equipment . 61
B.1 General . 61
B.2 Normal test environment . 61
B.3 Extreme test environment . 61
B.3.1 Extreme temperature . 61
B.4 Vibration . 62
B.5 Power supply . 62
B.6 Measurement of test environments . 62
Annex C (informative): Test tolerances and derivation of test requirements . 64
C.1 Measurement of radiated characteristics . 65
Annex D (normative): Calibration . 68
Annex E (informative): OTA measurement system set-up . 69
E.1 OTA output power EIRP, OTA Frequency stability, OTA Error Vector Magnitude and OTA
Transmit ON/OFF power . 69
E.2 Out of band gain . 70
E.3 Unwanted emission: Operating band unwanted emission and ACLR . 71
E.4 Input intermodulation . 72
E.5 Adjacent Channel Rejection Ratio . 73
Annex F (normative): In-channel TX tests . 74
F.1 General . 74
F.2 Basic principles . 74
F.2.1 Output signal of the TX under test . 74
F.2.2 Ideal signal . 74
F.2.3 Measurement results . 75
F.2.4 Measurement points . 75
F.3 Pre-FFT minimization process . 76
F.4 Timing of the FFT window . 76
F.5 Resource element TX power . 77
F.6 Post-FFT equalisation. 78
F.7 EVM . 80
F.7.0 General . 80
F.7.1 Averaged EVM . 80
Annex G (normative): TRP measurement procedures . 82
Annex H (informative): Change history . 83
History . 85

ETSI
3GPP TS 38.115-2 version 17.8.0 Release 17 7 ETSI TS 138 115-2 V17.8.0 (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
ETSI
3GPP TS 38.115-2 version 17.8.0 Release 17 8 ETSI TS 138 115-2 V17.8.0 (2026-04)
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.
ETSI
3GPP TS 38.115-2 version 17.8.0 Release 17 9 ETSI TS 138 115-2 V17.8.0 (2026-04)
1 Scope
The present document specifies the Radio Frequency (RF) test methods and conformance requirements for NR Repeater
type 2-O. These have been derived from, and are consistent with the radiated requirements for Repeater type 2-O in
Repeater specification defined in TS 38.106 [2].
A repeater type 1-C only has conducted requirements so it does not require compliance to this specification.
Repeater type 2-O have only radiated requirements so they require compliance to this specification only.
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 TR 21.905: "Vocabulary for 3GPP Specifications"
[2] 3GPP TS 38.106: "NR repeater radio transmission and reception"
[3] Recommendation ITU-R M.1545: "Measurement uncertainty as it applies to test lim
...