9 Immunity

37.1143GPPActive Antenna System (AAS) Base Station (BS) Electromagnetic Compatibility (EMC)Release 17TS

9.1 Test configurations

This subclause defines the configurations for immunity tests as follows:

– The equipment shall be tested under normal test conditions as specified in the functional standards;

– During test, the RF output power may be reduced to a power level sufficient for establishing and maintaining the required communication link;

– The test configuration shall be as close to normal intended use as possible;

– If the equipment is part of a system, or can be connected to ancillary equipment, then it shall be acceptable to test the equipment while connected to the minimum configuration of ancillary equipment necessary to exercise the ports;

– If the equipment has a large number of ports, then a sufficient number shall be selected to simulate actual operation conditions and to ensure that all the different types of termination are tested;

– The test conditions, test configuration and mode of operation shall be recorded in the test report;

– Ports which in normal operation are connected shall be connected to an ancillary equipment or to a representative piece of cable correctly terminated to simulate the input/output characteristics of the ancillary equipment, In case of hybrid AAS BS, Radio Frequency (RF) input/output ports shall be correctly terminated;

– For OTA AAS BS intentionally radiating through the antenna array, the equipment shall be placed in a test setup capable to reduce the power to a level sufficient for establishing and maintaining the communication link;

– Ports which are not connected to cables during normal operation, e.g. service connectors, programming connectors, temporary connectors etc. shall not be connected to any cables for the purpose of EMC testing. Where cables have to be connected to these ports, or interconnecting cables have to be extended in length in order to exercise the EUT, precautions shall be taken to ensure that the evaluation of the EUT is not affected by the addition or extension of these cables;

– Immunity tests on the entire AAS BS shall be performed by establishing communication links at the radio interface (e.g. with the mobile simulator) and the S1/Iub interface (e.g. with an RNC/EPC simulator) and evaluating the BLER/throughput (see figures 9.1-1 and 9.1-2);

– Immunity tests shall be performed on both the Uplink and Downlink paths. The tests shall also include both the radio interface and the S1/Iub interface. BLER/throughput evaluation may be carried out at either interface, where appropriate, and the measurements for the Uplink and Downlink paths may be carried out as a single path looped at either the radio interface or S1/Iub interface. In case of looping is used care have to be taken that the BLER/throughput information doesn’t change due to looping;

– For AAS BS capable of multi-RAT and/or multi-band operation, communication links shall be established in such a way that all RATs and operating band(s) are activated during the test according to the applicable test configurations in subclause 4.5. Performance assessment may be done separately for each RAT and/or operating band.

Figure 9.1-1: Communication link set up for hybrid AAS BS immunity measurement

Figure 9.1-2: Communication link set up for OTA AAS BS immunity measurement

9.2 RF electromagnetic field (80 MHz – 6000 MHz)

9.2.1 RF electromagnetic field, hybrid AAS BS

This test assesses the ability of radio equipment to operate as intended in the presence of a radio frequency electromagnetic field disturbance at the enclosure. This test is applicable to hybrid AAS BS and shall be performed on a representative configuration of the hybrid AAS BS.

The test method and levels shall be in accordance with IEC 61000‑4‑3 [16] as captured in TS 25.113 [5], TS 36.113 [6], TS 38.113 [30] and TS 37.113 [4] for UTRA, E-UTRA, NR and MSR, respectively. The use of reverberation chamber test method according to IEC 61000-4-21 [35], clause 6.1 and Annex D as alternative method is allowed.

9.2.2 RF electromagnetic field, OTA AAS BS

This test assesses the ability of radio equipment operate as intended in the presence of a radio frequency electromagnetic field disturbance at the enclosure. The OTA AAS BS includes an antenna which is an intentional radiator and does not form part of the EMC enclosure, application of RF electromagnetic fields in these directions may damage the BS receivers unintentionally.

In the operational range of angles of the OTA AAS BS antenna receivers are protected by the RF blocking requirements defined in TS 37.105 [2], conforming to the test requirement in TS 37.145-2 [10] and are not part of the EMC RF electromagnetic field immunity requirement.

In the range of angles except the operational range of angles of the OTA AAS BS antenna (i.e. except for the half sphere around the DUT radiating direction as depicted on figure 9.2.2-1) and for the frequency range above 690 MHz (according to the test method in ETSI EN 301 489-50 [25]), the EMC RF electromagnetic field immunity requirement applies.

When no spatial exclusion is implemented the use of reverberation chamber test method according to IEC 61000-4-21 [35], clause 6.1 and Annex D as alternative method is allowed.

Figure 9.2.2-1 EMC RF electromagnetic field immunity requirement testing directions for OTA AAS BS (horizontal plane depicted) with the spatial exclusion zone applied

Depending on RAT capability sets supported by the OTA AAS BS, the following RF electromagnetic field requirements apply over the range of angles covered by the EMC RF electromagnetic field immunity requirement:

– For OTA AAS BS in single RAT UTRA operation, the RF electromagnetic field immunity requirements from TS 25.113 [5] apply.

– For OTA AAS BS in single RAT E-UTRA operation, the RF electromagnetic field immunity requirements from TS 36.113 [6] apply.

– For OTA AAS BS in MSR operation, the RF electromagnetic field immunity requirements from TS 37.113 [4] apply.

– For OTA AAS BS in single RAT NR operation, the BS type 1-O requirements for the RF electromagnetic field immunity from TS 38.113 [30] apply.

9.3 Electrostatic discharge

This test assesses the ability of radio equipment to operate as intended in the event of an electrostatic discharge.

The test shall be performed on a representative configuration of the radio equipment.

The test method and levels shall be in accordance with IEC 61000‑4‑2 [15] as captured in TS 25.113 [5], TS 36.113 [6], TS 38.113 [30] and TS 37.113 [4] for UTRA, E-UTRA, NR and MSR, respectively.

9.4 Fast transients common mode

The test shall be performed on AC mains power input ports.

This test shall be performed on signal ports, telecommunication ports, control ports and DC power input/output ports if the cables may be longer than 3 m.

Where this test is not carried out on a port or any other ports because the manufacturer declares that it is not intended to be used with cables longer than 3 m, a list of ports which were not tested for this reason shall be included in the test report.

This test shall be performed on a representative configuration of the equipment.

The test method and levels shall be in accordance with IEC 61000‑4‑4 [17] as captured in TS 25.113 [5], TS 36.113 [6], TS 38.113 [30] and TS 37.113 [4] for UTRA, E-UTRA, NR and MSR, respectively.

9.5 RF common mode (0.15 MHz – 80 MHz)

The test shall be performed on AC mains power input/output ports.

This test shall be performed on signal ports, telecommunication ports, control and DC power input/output ports, which may have cables longer than 3 m.

Where this test is not carried out on a port or any other ports because the manufacturer declares that it is not intended to be used with cables longer than stated above, a list of ports which were not tested shall be included in the test report.

This test shall be performed on a representative configuration of the equipment.

The test method and levels shall be in accordance with IEC 61000‑4‑6 [19] as captured in TS 25.113 [5], TS 36.113 [6], TS 38.113 [30] and TS 37.113 [4] for UTRA, E-UTRA, NR and MSR, respectively.

NOTE: This test can also be performed using the intrusive method, where appropriate, see IEC 61000‑4‑6 [19].

9.6 Voltage dips and interruptions

These tests assess the ability of radio equipment to operate as intended in the event of voltage dips and interruptions present on the AC mains power input ports.

The tests shall be performed on AC mains power input ports.

These tests shall be performed on a representative configuration of the equipment.

The test method and levels shall be in accordance with IEC 61000‑4‑11 [20] as captured in TS 25.113 [5], TS 36.113 [6], TS 38.113 [30] and TS 37.113 [4] for UTRA, E-UTRA, NR and MSR, respectively.

9.7 Surges, common and differential mode

These tests assess the ability of radio equipment to operate as intended in the event of surges being present at the AC mains power input ports and telecommunication ports.

The tests shall be performed on AC mains power input ports.

This test shall be additionally performed on telecommunication ports.

These tests shall be performed on a representative configuration of the equipment.

The test method and levels shall be in accordance with IEC 61000‑4‑5 [18] as captured in TS 25.113 [5], TS 36.113 [6], TS 38.113 [30] and TS 37.113 [4] for UTRA, E-UTRA, NR and MSR, respectively.

Annex A (informative):
Change history

Change history

Date

Meeting

TDoc

CR

Rev

Cat

Subject/Comment

New version

2016-02

RAN4#78

R4-161123

First version of TS

0.1.0

2016-03

RAN#71

RP-160401

Presented to RAN for approval.

Editorial cotrrections recommended by ETSI editHelp

1.0.0

2016-03

RP-71

TR approved by RAN plenary

13.0.0

2016/06

RP-72

RP-161142

0002

1

F

Clarification in EMC environmental conditions references

13.1.0

2017/03

RP-75

RP-170586

0004

F

CR to TS 37.114: Clarification of the EMC specification’s scope

13.2.0

2017-03

RP-75

Update to Rel-14 version (MCC)

14.0.0

2017/06

RP-76

RP-171306

0009

A

CR to TS 37.114: Isolation of Band 46 and NB-IoT from the AAS BS specification

14.1.0

2017-12

RAN#78

RP-172599

0059

1

B

Big CR to TS 37.114: eAAS EMC specification, v15.0.0

15.0.0

2018-03

RAN#79

RP-180282

0064

F

CR to TS37.114

15.1.0

2018-06

RAN#80

RP-181075

0067

1

B

CR to TS 37.114: NR introduction into AAS EMC specification

15.2.0

2018-12

RAN#82

RP-182362

0071

2

B

CR to TS 37.114: Clarification on Exclusion Bands for Radiated Immunity Test in FR2

15.3.0

2018-12

RAN#82

RP-182386

0073

1

F

CR to TS 37.114: additional inputs for introduction of NR to the AAS EMC specification

15.3.0

2018-12

RAN#82

RP-182386

0074

F

CR to TS 37.114: RAT-specific AAS BS operation terminology corrections

15.3.0

2018-12

RAN#82

RP-182386

0075

1

B

CR to TS 37.114: Consideration of the narrowband responses and communication link

15.3.0

2018-12

RAN#82

RP-182386

0076

F

CR to TS 37.114: clarification on CSA and RCSA capability sets

15.3.0

2019-03

RAN#83

RP-190401

0077

1

B

Draft CR to TS 37.114 Exclusion Bands for Radiated

15.4.0

2019-06

RAN#84

RP-191262

0078

1

F

CR to TS 37.114: Updates for Rx exclusion zone size and terminology for EMC RI testing purposes

15.5.0

2019-06

RAN#84

RP-191262

0080

1

F

CR to TS 37.114 subclause 4.2

15.5.0

2019-06

RAN#84

RP-191262

0084

F

CR to 37.114 Subsections index in Section 4.1

15.5.0

2019-09

RAN#85

RP-192019

0085

F

CR to TS 37.114 Correction on CISPR 16-1-1 for DC conducted Emission(clause 2 and subclause 7.1)

15.6.0

2019-09

RAN#85

RP-192053

0087

1

F

CR to 37.114 Editorial Corrections

15.6.0

2019-12

RAN#86

RP-193002

0093

F

CR to TS 37.114 Correction on definitions subclause 3.1

15.7.0

2019-12

RAN#86

RP-193002

0094

F

CR to TS 37.114 Correction on notes in subclause 7.1

15.7.0

2020-03

RAN#87

RP-200393

0095

1

F

CR to TS 37.114 Add the transmitter exclusion band for MSR BS(subclause 4.1)

15.8.0

2020-06

RAN#88

RP-201005

0096

 

F

CR to TS 37.114: internal TR reference corrections, Rel-15

15.9.0

2020-06

RAN#88

RP-200984

0097

1

F

[R15]CR to TS 37.114 Add the reverberation chamber for radiated immunity testing (clause 2

15.9.0

2020-06

RAN#88

Update to Rel-16 version (MCC)

16.0.0

Change history

Date

Meeting

TDoc

CR

Rev

Cat

Subject/Comment

New version

2022-03

SA#95

Update to Rel-17 version (MCC)

17.0.0