SOCIALIST REPUBLIC OF VIET NAM

 

 

 

QCVN 111:2023/BTTTT

 

 

AMENDMENT 1:2025 QCVN 07:2023/BXD

ON EQUIPMENT FOR E-UTRA FDD MOBILE RELAY STATIONS -

RADIO ACCESS PART

 

National technical regulation on

Evolved Universal Terrestial Radio Access (E-UTRA FDD) Repeater

  

 

 

 

 

Hanoi - 2023

 

Table of Contents

 

1. GENERAL PROVISIONS.. 5

1.1. Scope of Application. 5

1.2. Applicability. 5

1.3. Referenced Documents. 5

1.4. Definitions. 6

1.5. Symbols. 7

1.6. Abbreviations. 8

2. TECHNICAL REQUIREMENTS. 10

2.1. Environmental Conditions. 10

2.2. Technical Requirements. 10

2.2.1. Technical Requirements and Corresponding Measurement Methods. 10

2.2.2. Unwanted Emissions in Operating Band. 10

2.2.3. Spurious Emissions. 14

2.2.4. Maximum Output Power. 16

2.2.5. Inband Intermodulation Input. 17

2.2.6. Out-of-band Gain. 19

2.2.7. Adjacent Channel Compression Ratio. 20

2.2.8. Outband Intermodulation Output. 21

2.2.9. Radiation Emission. 22

3. MEASUREMENT METHODS. 23

3.1. Measurement Conditions. 23

3.2. Interpretation of Measurement Results. 23

3.3. Measurement of Essential Parameters for the Radio Access Part. 25

3.3.1. Unwanted Emissions in Operating Band. 25

3.3.2. Spurious Emissions. 26

3.3.3. Maximum Output Power. 27

3.3.4. Inband Intermodulation Input. 27

3.3.5. Out-of-band Gain. 28

3.3.6. Adjacent Channel Compression Ratio. 29

3.3.7. Outband Intermodulation Output. 29

3.3.8. Radiation Emission. 30

4. MANAGEMENT REQUIREMENTS. 31

5. RESPONSIBILITIES OF ORGANIZATIONS AND INDIVIDUALS. 31

6. IMPLEMENTATION ORGANIZATION. 31

Appendix A (Provisions) Equipment Configuration. 33

Appendix B (Reference) Environmental Conditions Requirements. 34

Appendix C (Reference) Measurement Diagram for Equipment. 36

Appendix D (Reference) Reference Input Signal for Equipment. 39

Appendix E (Provisions) HS Code for E-UTRA FDD Mobile Relay Station Equipment. 40

List of References. 41

 

Foreword

QCVN 111:2023/BTTTT replaces QCVN 111:2017/BTTTT.

QCVN 111:2023/BTTTT was compiled by the Institute of Post and Telecommunications Science and Technology, reviewed by the Department of Science and Technology, examined by the Ministry of Science and Technology, and issued together with Circular No. /2023/TT-BTTTT dated /month/year 2023.

 

 

 

 

 

TECHNICAL REGULATION

 

ON EQUIPMENT FOR REPEATERS E-UTRA FDD MOBILE RELAY STATIONS-

RADIO ACCESS PART

National technical regulation on

Evolved Universal Terrestial Radio Access (E-UTRA FDD) Repeater

 

1. GENERAL PROVISIONS

1.1 SCOPE OF APPLICATION

This regulation specifies technical requirements for E-UTRA FDD mobile relay station equipment operating across the entire band or a portion thereof as specified in Table 1.

Table 1– Bands of E-UTRA FDD mobile relay station equipment

The HS code for E-UTRA FDD mobile relay station equipment shall be applied according to Appendix E.

1.2 APPLICABILITY

This regulation applies to organizations and individuals, both domestic and foreign, engaged in the production and business of equipment within the scope of this regulation on the territory of Vietnam.

1.3 REFERENCED DOCUMENTS

ETSI TS 136 143 (V15.0.0) (09-2018): "LTE; Evolved Universal Terrestrial Radio Access (E-UTRA); FDD repeater conformance testing (3GPP TS 36.143 version 15.0.0 Release 15)".

ETSI TS 136 141 (V15.3.0) (07-2018): "LTE; Evolved Universal Terrestrial Radio Access (E-UTRA); Base Station (BS) conformance testing (3GPP TS 36.141 version 15.3.0 Release 15)".

ETSI TS 125 141 (V15.3.0) (07-2018): "Universal Mobile Telecommunications System (UMTS); Base Station (BS) conformance testing (FDD) (3GPP TS 25.141 version 15.3.0 Release 15)".

ETSI EN 301 908-11 (V11.1.2): IMT cellular networks; Harmonised Standard covering the essential requirements of article 3.2 of the Directive 2014/53/EU; Part 11: CDMA Direct Spread (UTRA FDD) Repeaters.

ETSI TR 100 028 (all parts) V1.4.1: Electromagnetic Compatibility and Radio Spectrum Matters (ERM); Uncertainties in the Measurement of Mobile Radio Equipment Characteristics.

Recommendation ITU-R SM.329-12 (09-2012): "Unwanted emissions in the spurious domain".

ITU-R SM.1539-1 (11-2002): “Variation of the boundary between the out-of-band and spurious domains required for the application of Recommendations ITU-R SM.1541 and ITU-R SM.329”.

TCVN 7699-2-1 :2007 (IEC 60068-2-1): “Environmental testing - Part 2-1: Tests - Test A: Cold”.

TCVN 7699-2-2 :2011 (IEC 60068-2-2): “Environmental testing - Part 2-2: Tests - Test B: Dry heat”.

TCVN 7699-2-6 :2009 (IEC 60068-2-6): “Environmental testing - Part 2-6: Tests - Test Fc: Vibration (Sine)”.

TCVN 7921-3-3 :2014 (IEC 60721-3-3): “Environmental condition classification - Part 3-3: Classification according to groups of environmental parameters and severity - Stationary use in weather protected locations”.

TCVN 7921-3-4 :2014 (IEC 60721-3-4): “Environmental condition classification - Part 3-4: Classification according to groups of environmental parameters and severity - Stationary use in non-weather protected locations”.

1.4.Definitions

1.4.1.   Carrier wave (sóng mang)

Modulated wave transmitted over physical channels E-UTRA or UTRA (WCDMA).

1.4.2.   Channel bandwidth (băng thông kênh)

RF bandwidth supporting a single RF carrier wave E-UTRA with configured uplink or downlink transmission bandwidth of a cell (cell).

NOTE: The unit of measurement for channel bandwidth is MHz, and it serves as a reference for RF requirements of transmitters and receivers.

1.4.3.   Channel edge (biên kênh)

Lowest or highest frequency of the E-UTRA carrier wave.

NOTE: Channel bandwidth separates the channel edges.

1.4.4.   Donor coupling loss (tổn hao ghép nối donor)

Coupling loss between the repeater and the donor base station (transmitting base station).

1.4.5.   Downlink (đường xuống)

Radio signal transmission path from the base station to the mobile device.

1.4.6.   Downlink operating band (băng tần hoạt động đường xuống)

Portion of the operating band designed for downlink transmission.

1.4.7.   Nominal passband edge (biên dải thông danh định)

Lowest and highest frequencies of the repeater passband.

1.4.8.   Operating band (băng tần hoạt động)

Frequency range (paired or unpaired) defined by a set of technical requirements in which E-UTRA operates.

NOTE: The operating bands of E-UTRA repeaters are published by manufacturers according to Table 1. In this table, UTRA operating bands are numbered using Roman numerals and E-UTRA operating bands are numbered using Arabic numerals.

1.4.9.   Output power (công suất đầu ra)_{Average power of a carrier wave at the maximum gain of the repeater when the load impedance equals the transmitter's nominal load impedance.})

1.4.10. Passband

(dải thông) Frequency range within which the repeater operates according to its configuration.

NOTE: This frequency range may correspond to one or several consecutive nominal channels. The repeater may have one or more passbands.

1.4.11. Rated output power

(công suất đầu ra danh định) Rated output power of the repeater is the average power per carrier wave announced by the manufacturer as available at the antenna port.

1.4.12. Repeater

(trạm lặp) (thiết bị lặp) Device that receives, amplifies, and transmits RF carrier waves radiated or conducted in both directions: downlink (from the base station to mobile phone areas) and uplink (from mobile devices to the base station).

NOTE: In designated operating bands, only the uplink or downlink corresponding to the operating band is repeated.

1.4.13.  Transmission bandwidth

(băng thông phát) Instantaneous transmission bandwidth from a user or base station, measured in resource blocks (RB).

1.4.14. Transmission bandwidth configuration

(cấu hình băng thông phát) Maximum transmission bandwidth permitted for uplink or downlink in a specified channel bandwidth, measured in resource blocks.

1.4.15. Uplink

(đường lên) Radio signal transmission path from the mobile device to the base station.

1.4.16. Uplink operating band

(băng tần hoạt động đường lên) Portion of the operating band designed for uplink transmission.

1.5.Symbols

∆f

ACLR

 

2.1 ENVIRONMENTAL CONDITIONS

The technical requirements of this standard apply under the operational environmental conditions declared by the supplier. The equipment must fully comply with all technical requirements of this standard when operating within the limits of the declared operational environmental conditions.

Appendix B guides suppliers on how to declare environmental conditions.

2.2 TECHNICAL REQUIREMENTS

2.2.1 TECHNICAL REQUIREMENTS AND CORRESPONDING MEASUREMENT METHODS

This standard specifies technical requirements and corresponding measurement methods for equipment within its scope.

– Technical requirements for E-UTRA repeater equipment

Table 2Technical requirements

2.2.2 UNWANTED EMISSIONS IN THE OPERATING BANDWIDTH

2.2.2.1 DEFINITION

Unwanted emissions include out-of-band emissions and spurious emissions. Out-of-band emissions are emissions outside the channel bandwidth due to modulation processes and non-linear effects in the transmitter, excluding spurious emissions. Spurious emissions are emissions generated by unwanted effects of the transmitter such as harmonics, parasitic emissions, intermodulation components, and frequency-shifted components, but excluding out-of-band emissions.

Requirements for out-of-band emissions of repeater equipment are defined both for unwanted out-of-band emissions and protection of the base station receiver in the uplink operating bandwidth. Unwanted emissions in the operating bandwidth define all unwanted emissions within the operating bandwidth of the repeater equipment plus a 10 MHz band below and above. Unwanted emissions outside this band are limited by the spurious emission requirements.

2.2.2.2 LIMITS

General

2.2.2.2.1.Emissions shall not exceed the limits specified in the tables below, where:

∆f is the distance from the edge frequency of the nominal passband and the -3 dB point of the nearest filter to the carrier frequency.

• The nominal passband edges are the lowest and highest frequencies of the repeater equipment's passband.
• is the measurement bandwidth.
• BW_{Measured bandwidth} is the passband bandwidth of the repeater equipment.
• BW_{Bandwidth of the repeater passband} f_offset is the offset from the edge frequency of the nominal passband to the center of the measurement filter.
• is the f_offset of the frequency outside 10 MHz relative to the repeater equipment's operating bandwidth.
• Maximum value of f_offset used to determine the requirement_max equals f_offset
• Distance between the nominal passband edge frequency and the -3 dB point of the nearest test filter relative to the carrier wave frequency._max minus half the bandwidth of the measurement filter._max All requirements are measured using root mean square (RMS) power.

Requirements apply to both uplink and downlink, with maximum gain and input signal as follows:

No E-UTRA input signal;

• An E-UTRA input signal within the repeater equipment's passband at the level that produces the maximum rated output power for each channel;
• A 10 dB increase in the E-UTRA input signal in all channels within the passband compared to the input signal level producing the maximum rated output power.
• UNWANTED EMISSIONS IN THE OPERATING BANDWIDTH

2.2.2.2.2.For E-UTRA FDD repeater equipment operating in bands 1, 3, 5, and 8, emissions shall not exceed the limits specified in Tables 3 to 5. Measurements are applied to both uplink and downlink of the repeater equipment.

– GENERAL LIMITS FOR UNWANTED EMISSIONS IN THE OPERATING BANDWIDTH

Table 3for the passband of the repeater equipment 5 MHz for E-UTRA bands 1, 3, 5, and 8 Frequency offset at the -3 dB point of the measurement filter, ∆f

Table 4for the passband of the repeater equipment 5 MHz for E-UTRA bands 1, 3, 5, and 8 Frequency offset at the -3 dB point of the measurement filter, ∆f

Table 50 MHz ≤ ∆f < 0.05 MHz

– GENERAL LIMITS FOR UNWANTED EMISSIONS IN THE OPERATING BANDWIDTH FOR THE PASSBAND

Table 65 MHz for E-UTRA band 28 5 MHz for E-UTRA bands 1, 3, 5, and 8 0 MHz ≤ ∆f < 5 MHz

2.2.2.2.3.Protection for base station receivers within the operating band

Requirements to be applied to protect E-UTRA FDD base station receivers deployed in the same geographic area with E-UTRA FDD repeaters.

Requirements to be applied at frequencies within the bands above and below 10 MHz bandwidth of the repeater.

Requirements to be applied on the uplink of the repeater, with maximum gain.

The power of any unwanted emissions in the operating band shall not exceed the limit specified in Table 7.

Table 7- Limit on unwanted emissions in the uplink operating band to protect base station receivers

2.2.2.2.4.Coexistence in adjacent bands

Requirements to be applied to protect in adjacent bands with Band 1.

This requirement applies only to the uplink of the repeater.

The power of any unwanted emissions in the operating band shall not exceed the limit specified in Table 8.

Table 8– Limit on unwanted emissions in the uplink operating band to protect adjacent band operations

2.2.2.3.Measurement Method

Use measurements as prescribed in 3.3.1.

2.2.3.Spurious Emissions

2.2.3.1.Definition

Spurious emissions are emissions generated by unwanted effects of the transmitter such as harmonic emissions, parasitic emissions, modulation sidebands, and frequency conversion products, but excluding out-of-band emissions. Spurious emissions are measured at the output port of the repeater.

Spurious emission limits apply to the frequency range from 9 kHz to 12.75 GHz, excluding the frequency range lower than 10 MHz below the lowest frequency of the operating band of the repeater to the frequency range higher than 10 MHz above the highest frequency of the operating band of the repeater.

The requirements of 2.2.3.2 must be applied to all types of repeaters under consideration (one or multiple operating bands). This requirement applies to all configurations predicted to meet the technical specifications published by the manufacturer. Measurements must be performed on both the uplink and downlink of the repeater.

All requirements are measured as effective power (RMS), unless otherwise specified.

2.2.3.2.Limits

2.2.3.2.1.Emissions shall not exceed the limits specified in the tables below, where:

Requirements apply to the uplink and downlink of the repeater, with maximum gain and input signal as follows:

• An E-UTRA input signal within the repeater equipment's passband at the level that produces the maximum rated output power for each channel;
• A 10 dB increase in the E-UTRA input signal in all channels within the passband compared to the input signal level producing the maximum rated output power.
• Increase the input signal level of E-UTRA by 10 dB in all channels within the bandwidth compared to the input signal level that produces the maximum rated output power.

2.2.3.2.2.Spurious emissions

The spurious emission power does not exceed the limit specified in Table 9.

Table 9– General spurious emission limits

2.2.3.2.3.Coexistence with other systems in the same geographic area

This requirement applies to protect UE/MS and BS/BTS receivers of other systems.

The power of spurious emissions from the E-UTRA repeater does not exceed the limit specified in Table 10 when coexisting with other systems in the first column.

Table 10– Spurious emission limits for E-UTRA FDD repeaters in the geographic coverage area of other systems operating in different bands

2.2.3.3.Measurement Method

Use measurements as prescribed in 3.3.2.

2.2.4.Maximum Output Power

2.2.4.1.Definition

The output power, Pout, of the repeater is the average power level of a carrier at the maximum gain of the repeater when loaded with a load impedance equal to the nominal load impedance of the transmitter.

The maximum output power, Pmax, of the repeater is the average power level per carrier measured at the antenna connector under defined reference conditions.

Requirements apply to the uplink and downlink of the repeater, at maximum gain.

2.2.4.2.Limits

Requirements apply at maximum gain, with E-UTRA signals in the repeater bandwidth at the level producing the maximum rated output power for each channel.

When the power of all signals increases by 10 dB compared to the signal power that produces the maximum rated output power.

Under normal conditions, the maximum output power of the repeater device shall be within the limits specified in Table 11 for the rated output power published by the manufacturer.

Table 11– Output power of the repeater device under normal conditions

Under threshold conditions, the maximum output power of the repeater device shall be within the limits specified in Table 12 for the rated output power published by the manufacturer.

Table 12– Output power of the repeater device under threshold conditions

2.2.4.3.Measurement Method

Use the measurement methods as prescribed in 3.3.3.

2.2.5.Input Intermodulation

2.2.5.1.Definition

Input intermodulation is a criterion for assessing the ability of the repeater device to prevent the generation of interference within the operating band when interfering signals are present on frequencies other than the operating band.

The mixing of third and higher-order harmonics of two interfering RF signals can create interfering signals within the channel's operating band. The intermodulation suppression ratio is a criterion for assessing the repeater device's ability to maintain the desired frequency free from internal interference.

This requirement applies to both the uplink and downlink paths of the repeater device at maximum gain.

2.2.5.2.Limits

2.2.5.2.1.General requirements for input intermodulation

The intermodulation requirements must be met when the following signals are applied to the repeater device.

• f₁ Offset is the deviation from the edge frequency of the first or last channel in the carrier band closest to the carrier band.

Table 13– General requirements for input intermodulation

For the parameters specified in Table 13, the power within the operating band shall not exceed the limit specified in Table 14 at the output of the repeater devices when measured at the center of the passband, compared to the received level without the presence of interfering signals.

Table 14– General limits for input intermodulation

2.2.5.2.2.Coexistence with other systems

The intermodulation requirements must be met when the following signals affect the repeater device.

Table 15– Input intermodulation requirements for interfering signals in coexisting systems

For the parameters specified in Table 15, the power within the operating band shall not exceed the limit specified in Table 16 at the output of the repeater device when measured at the center of the operating band, compared to the received level without the presence of interfering signals.

Table 16– General limits for input intermodulation

2.2.5.3.Measurement Method

Use the measurement methods as prescribed in 3.3.4.

2.2.6.Out-of-Band Gain

2.2.6.1.Definition

Out-of-band gain refers to the gain of the repeater device immediately outside the operating band. Measurements must be applied to both the uplink and downlink paths of the repeater device, with the maximum gain value.

2.2.6.2.Limits

The use of the repeater device in a system aimed at amplifying signals within the band and not amplifying out-of-band emissions from the donor base station.

For this purpose, in the application of the repeater device, the out-of-band gain is less than the donor link loss. This loss is the minimum attenuation between the donor base station and the repeater device for proper operation, as published by the manufacturer.

Out-of-band gain beyond the operating band does not exceed the limit specified in Table 17, where:

• f_offset_CW is the distance between the outer edge frequency of the outer channel in the passband and a CW signal.

Table 17– Limit 1 of out-of-band gain

For 10,0 MHz ≤ f_offset, the out-of-band gain does not exceed the limit specified in Table 18.

Table 18– Limit 2 of out-of-band gain

Use the measurement methods as prescribed in 3.3.5.

2.2.7.Neighboring Channel Compression Ratio

2.2.7.1.Definition

The neighboring channel compression ratio (ACRR) is the ratio of the loaded RRC gain of each carrier of the repeater device in the passband to the loaded RRC gain of the repeater device on the adjacent channel outside the repeater device's passband. The carriers in the passband and in the adjacent channel are of the same type (reference carrier).

This requirement applies to both the uplink and downlink paths of the repeater device at maximum gain, where the donor link is maintained through the antennas (of the repeater device).

2.2.7.2.Limits

No minimum requirements are specified for E-UTRA signals.

2.2.7.2.1.Adjacent Channel Rejection Ratio

Coexistence with UTRA

2.2.7.2.2.This requirement is applied to protect UTRA signals in geographic areas where E-UTRA FDD repeaters and UTRA base stations are deployed together. The reference carrier is the UTRA FDD carrier.

Under normal conditions, the ACRR does not exceed the limit specified in Table 19.

– ACRR of the repeater device

Table 19Coexistence with other systems

2.2.7.3.Measurement Method

Use the measurements as specified in 3.3.6.

2.2.8.Output Intermodulation

2.2.8.1.Definition

The requirement for output intermodulation is a measure of the repeater's ability to prevent the generation of signals caused by intermodulation products due to interfering signals entering the repeater through the output port.

The output intermodulation level is the power of the intermodulation products when the E-UTRA interference signal of the 5 MHz channel is fed into the output port at a level 30 dB below the desired signal level. The bandwidth of the desired signal channel BW_{Channel bandwidth} must be the maximum bandwidth supported by the repeater. The frequency offset of the center frequency of the interference signal from the center frequency of the desired signal carrier must comply with the provisions of Table 20.

The requirements may apply to downlink signals at maximum gain.

Table 20– Interference and desired signals for the output intermodulation requirement

The position of the interference signal lying within a portion or entirely outside the operating band of the downlink of the repeater is excluded from the requirements in the table above.

2.2.8.2.Limit

The output intermodulation level shall not exceed the unwanted emission limits of the operating band of 2.2.2.2 or the spurious emission limits of 2.2.3.2.1.

2.2.8.3.Measurement Method

Use the measurements as specified in 3.3.7.

2.2.9.Radiated Emission

2.2.9.1.Definition

This criterion evaluates the capability to limit unwanted emissions from the repeater E-UTRA FDD port casing.

This criterion applies to the E-UTRA FDD repeater.

The measurement of this criterion must be performed on a typical configuration of the device under test.

2.2.9.2.Limit

The frequency bands and reference bandwidths for the detailed transitions of the limits between out-of-band emission requirements and spurious emission requirements are based on ITU-R SM.329-12 and SM.1539-1 recommendations.

The requirements in Table 21 only apply to frequencies within the emission range.

Table 21– Spurious emission requirements

2.2.9.3.Measurement Method

Use the measurements as specified in 3.3.8.

3.MEASUREMENT METHODS

3.1.Test Conditions

The measurements defined in this standard must be carried out at representative points within the boundary conditions of the declared operational environment.

Where technical criteria vary depending on environmental conditions, measurements must be conducted under sufficient types of environmental conditions (within the boundary conditions of the declared operational environment) to verify compliance with affected technical requirements.

Normally, all measurements need only be performed under normal test conditions unless otherwise specified.

The measurement setup prescribed for each measurement is described in Appendix C.

3.2.Interpretation of Measurement Results

The results recorded in the measurement report for the measurements described in this standard must be interpreted as follows:

• The measured value related to the corresponding limit will be used to determine whether the equipment meets the standard requirements;
• The measurement uncertainty value for each parameter must be included in the measurement report;
• For each measurement, the recorded value of the measurement uncertainty must be equal to or less than the values specified in Tables 22.

According to this standard, for measurement methods, the measurement uncertainty values must be calculated according to TR 100 028 and must correspond to the expansion factor (coverage factor) k = 1.96 (this factor specifies a confidence level of 95% in the case of actual measurement uncertainty distributions that are normally Gaussian).

Table 22– Maximum measurement uncertainty of system testing

3.3.Measurement of essential parameters for the radio part

3.3.1.Unwanted emissions in the operating band

3.3.1.1.Initial conditions

Measurement environment: normal, see Appendix B, B.1.

Equipment arrangement according to Appendix C.

1. Connect the signal generator to the input port of the repeater.
2. Separation mode: True RMS.

3.3.1.2.Measurement procedure

1. Set the repeater to maximum gain.
2. Configure (the) signal generator(s) to produce (the) signal(s) as per Table 23.

Table 23– Reference input signal for unwanted emission in the operating band test

1. The measuring device must be configured with a measurement bandwidth as required by the test table.
2. Measure emissions at specified frequencies with the specified measurement bandwidth and note that the measured value does not exceed the prescribed value. To select the table and limits, use the repeater bandwidth and reference input signal if necessary.
3. Increase the input power by 10 dB compared to the level achieved in step 2).
4. Measure emissions at specified frequencies with the specified measurement bandwidth and note that the measured value does not exceed the prescribed value. To select the table and limits, use the repeater bandwidth and reference input signal if necessary.
5. If the repeater bandwidth is wider than 2.8 MHz, repeat steps 1) to 6) with a new reference input signal of the same type but using different central frequencies so that all signals fit within the repeater bandwidth.
6. Turn off the input signal for the repeater.
7. Measure emissions at specified frequencies with the specified measurement bandwidth and note that the measured value does not exceed the prescribed value. To select the table and limits, use the repeater bandwidth.

NOTE: Generally, the resolving bandwidth of the measuring device must equal the measurement bandwidth. However, to increase measurement accuracy, sensitivity, and efficiency, the resolving bandwidth can be smaller than the measurement bandwidth. In that case, the results must be integrated over the measurement bandwidth to obtain the equivalent noise bandwidth of the measurement bandwidth.

3.3.2.Spurious emissions

3.3.2.1.Initial conditions

Measurement environment: normal, see Appendix B, B.1.

Equipment arrangement according to Appendix C.

1. Connect the signal generator to the input port of the repeater.
2. Separation mode: True RMS

3.3.2.2.Measurement procedure

1. Set the repeater to maximum gain.
2. Configure (the) signal generator(s) to produce (the) signal(s) as per Table 24.

Table 24– Reference input signal for unwanted emission in the operating band test

At central frequencies where the entire signal lies within the bandwidth and at (the) levels producing the maximum output power published by the manufacturer with maximum gain.

1. The measuring device must be configured with a measurement bandwidth as required by the test table.
2. Measure emissions at specified frequencies with the specified measurement bandwidth and note that the measured value does not exceed the prescribed value. To select the table and limits, use the repeater bandwidth and reference input signal if necessary.
3. Increase the input power by 10 dB compared to the level achieved in step 2).
4. Measure emissions at specified frequencies with the specified measurement bandwidth and note that the measured value does not exceed the prescribed value. To select the table and limits, use the repeater bandwidth and reference input signal if necessary.
5. If the repeater bandwidth is wider than 2.8 MHz, repeat steps 1) to 6) with a new reference input signal of the same type but using different central frequencies so that all signals fit within the repeater bandwidth.
6. Turn off the input signal for the repeater.
7. Measure emissions at specified frequencies with the specified measurement bandwidth and note that the measured value does not exceed the prescribed value.

3.3.3.Maximum output power

3.3.3.1.Initial conditions

Measurement environment: normal, see Appendix B, B.1.

Equipment arrangement according to Appendix C.

Additionally, on a single UARFCN, measurements must be performed under limited power supply conditions as specified in A.1.

NOTE: Measurements are carried out with limited power supply and temperature.

1. Connect the signal generator equipment to the input port of the repeater.
2. Connect the power meter to the output port of the repeater.

3.3.3.2.Measurement procedure

1. Set the signal generator to produce the transmission signal as per Table 25.

Table 25– Reference input signal for maximum output power test

At central frequencies where the entire signal lies within the bandwidth and at (the) levels producing the maximum output power published by the manufacturer with maximum gain.

1. Adjust the input power of the repeater equipment to generate the maximum rated output power of the repeater equipment with maximum gain.
2. Measure the average power at the RF output port on a certain slot.
3. Increase the power by 10 dB compared to the power level achieved in step 2).
4. Measure the average power at the RF output port on a certain slot.

3.3.4.Input Intermodulation

3.3.4.1.Initial Conditions

Measurement environment: normal; see B.1 of Appendix B.

Equipment arrangement according to Appendix C.

1. Set the repeater to maximum gain.
2. Connect two signal generators to the combining circuit or a signal generator capable of generating multiple CW carriers to the input.
3. Connect the spectrum analyzer to the output of the repeater equipment. Set the resolution bandwidth to 1 MHz at the center of the operating band. Set the averaging time to 1 second.

3.3.4.2.Measurement Procedure

1. Adjust the frequency of the input signals, either below or above the passband, such that one carrier, f₁, is 1 MHz outside the channel edge frequency of the first or last channel in the passband, and the lowest order intermodulation product from the two carriers is located at the center of the passband, according to 2.2.5.2.
2. Perform the measurement of the output signal gain.
3. Repeat the measurement for the uplink of the repeater equipment.

3.3.5.Out-of-Band Gain

3.3.5.1.Initial Conditions

Measurement environment: normal; see B.1, Appendix B.

Equipment arrangement according to Appendix C.

1. f_offset_CW is the offset between the outer channel edge frequency of the out-of-band channel in the passband and a CW signal.
2. The measurement must be performed with an f_offset_CW of 0.2 MHz, 0.5 MHz, 1 MHz, 5 MHz, 7.5 MHz, 10 MHz, 12.5 MHz, 15 MHz and 20 MHz, excluding other passbands. Additionally, the measurement must also be performed for all harmonics of the passband of the repeater equipment up to 12.75 GHz, with the carrier frequency f ≤ 3.0 GHz.

3.3.5.2.Measurement Procedure

1. Set the repeater equipment to maximum gain.
2. Set the signal generator to produce a CW signal, fed to the input port of the repeater equipment. The input RF signal power level must be at least 5 dB lower than the power level within the passband that produces the maximum rated output power published by the manufacturer. This ensures that the equipment is operating in the linear region.
3. The average output power in each case must be measured using a spectrum analyzer connected to the output port of the repeater equipment, and the actual gain must be recorded and compared with the lower values in Tables 15 or 16.
4. With the same input power as in step 1), set the repeater equipment gain to the minimum value specified by the manufacturer.
5. The average output power in each case must be measured using a spectrum analyzer connected to the output port of the repeater equipment, and the actual gain must be recorded and compared with the lower values in Tables 17 or Table 18.

3.3.6.Neighboring Channel Compression Factor

3.3.6.1.Initial Conditions

Measurement environment: normal; see B.1 of Appendix B.

Equipment arrangement according to Appendix C.

1. Connect the signal generator to the input port of the repeater equipment.
2. Connect the power meter to the output port of the repeater.
3. The characteristics of the measuring equipment must be:

- Measurement filter bandwidth: determined in 2.2.7.1.

- Separation mode: true RMS voltage or true average power.

3.3.6.2.Measurement Procedure

1. Set the signal generator to transmit a modulated signal with the combination of PCCPCH, SCCPCH, and physical dedicated channel (DPCH) channels designated as the test model in Appendix C at the first or last 5 MHz channel in the passband.
2. Adjust the loop device's input power to generate the maximum rated output power of the loop device with maximum gain.
3. Measure the average filtered RRC power at the RF output port on a certain slot.
4. Set up the signal generator to transmit the same signal and the same power level at one of the channel offsets according to Table 19.
5. Measure the average filtered RRC power at the RF output port on a certain slot.
6. Calculate the ratio of the measured power within the bandwidth to the measured power at the channel offset.
7. Repeat steps from 4) to 6) until all channel offsets in Table 19 have been measured.

3.3.7.Output Intermodulation

3.3.7.1.Initial Conditions

Measurement Environment: Normal; see B.1 of Appendix B.

Equipment arrangement according to Appendix C.

1. Connect the signal generator to the input port of the loop device (desired signal). Connect the signal generator to the circulator at the output port (interference signal) and ensure that the signal generator's power sent to the output port of the loop device is correct.
2. Separation mode: True RMS.

3.3.7.2.Measurement Procedure

1. Set the repeater to maximum gain.
2. Set up the signal generator at the input port of the loop device (desired signal) to generate a signal according to the E-TM1.1 measurement model (TS 36.141) with the bandwidth specified in Table 24, at the level producing the maximum output power with the maximum gain published by the manufacturer.
3. Set up the signal generator at the output port of the loop device (interference signal) to generate a signal according to the E-TM1.1 measurement model (TS 36.141), with the bandwidth, level, and frequency offset as specified in Table 24.
4. Measure emissions at the specified frequencies with the determined bandwidth and note that the measured values must not exceed the specified values. Measurements within the interference signal band must be excluded. The measurements may be limited to the power of all third and fifth-order intermodulation products.
5. Repeat from step 3) until the frequency offsets of the interference signals in Table 18 are measured. Note that interference signals outside the allocated E-UTRA FDD band, as specified in 1.1, do not need to be measured.

NOTE: In general, the measurement instrument's bandwidth resolution must equal the measurement bandwidth. However, to increase measurement accuracy, sensitivity, and efficiency, the bandwidth resolution can be smaller than the measurement bandwidth.

3.3.8.Radiated Emissions

3.3.8.1.Measurement Method

1. The measurement position must comply with the requirements of ITU-R Recommendation SM.329-10. The EUT must be placed on a non-conductive stand and operated from a power supply through an RF filter to avoid radiation from conductive wires.

The average power of all spurious components must be separated by the test antenna and receiver (e.g., spectrum analyzer). At each frequency where the component is separated, the EUT must be rotated and the height of the test antenna adjusted to obtain the maximum response curve and the Effective Radiated Power (ERP) of that component is determined by substitution measurement. The measurement must be repeated with the test antenna in orthogonal polarization planes.

NOTE: The Effective Radiated Power (ERP) is related to the radiation of a half-wave dipole rather than an isotropic radiator. There is a constant difference of 2.15 dB between ERP and e.i.r.p.

ERP (dBm) = e.i.r.p. (dBm) - 2.15 (ITU-R Recommendation SM.329, Appendix 1).

1. The BS must transmit with the maximum power published by the manufacturer with all transmitters operating.

Set up the base station to transmit signals according to the applicable part for measuring spurious emissions.

In the case of a loop device, the gain and output power must be adjusted to the maximum value published by the manufacturer. Use the input signal according to the applicable part for measuring spurious emissions.

1. The video bandwidth must be approximately three times the resolution bandwidth. If this video bandwidth is not available on the receiver, it must have the maximum value and be at least 1 MHz.

3.3.8.2.Test Configuration

This Section defines the measurement configurations for emissions as follows:

• The device must be tested under normal testing conditions as specified in the functional standards;
• The test configuration should be as close to typical usage as possible;
• If the device is part of a system, or can be connected to auxiliary equipment, it may be acceptable to test the device when connected to the minimum configuration of auxiliary equipment necessary for port usage;
• If the device has multiple ports, a sufficient number of ports must be selected to simulate actual operating conditions and ensure that all types of terminal devices are tested;
• Testing conditions, test configurations, and operational modes must be recorded in the test report;
• Ports connected during normal operation must be connected to auxiliary equipment or representative cables in a manner that simulates the characteristics of auxiliary equipment. Radio Frequency (RF) input/output ports must be terminated correctly;
• Ports not connected to cables during normal operation, such as service connectors, programming connectors, temporary connectors, etc., shall not be connected to any cable used for this testing purpose. At locations where cables must be connected to these ports, or where associated cables must be extended for use with the Equipment Under Test (EUT), precautions must be taken to ensure that the evaluation of the EUT is not affected by the addition or extension of these cables;

For EUTs containing multiple Base Stations (BS), only tests related to the connectors of each representative type of component forming the BS of the EUT need to be performed;

For EUTs containing multiple repeaters, only tests related to the connectors of each representative type of component forming the repeater of the EUT need to be performed;

According to manufacturer recommendations, testing may be conducted separately on auxiliary equipment or on a representative configuration of the radio equipment and auxiliary equipment combination. In each case, the EUT must be tested based on all applicable items regarding emission requirements of this standard, and in each case, compliance allows the auxiliary equipment to be used with other radio equipment;

4. MANAGEMENT PROVISIONS

4.1. Mobile Information Repeater Devices E-UTRA FDD within the scope regulated in 1.1 must comply with the technical regulations of this standard;

4.2. Operating frequency of the device: Comply with management regulations and the use of radio frequency in Vietnam;

4.3. Measurement instruments and equipment: Comply with legal provisions on metrology;

5. RESPONSIBILITIES OF ORGANIZATIONS AND INDIVIDUALS

Organizations and individuals involved are responsible for implementing certification and conformity declaration requirements for devices within the scope of this standard and are subject to inspection by state management agencies according to current regulations;

6. IMPLEMENTATION ORGANIZATION

6.1. The Telecommunications Administration, the Radio Frequency Management Department, and Provincial Departments of Information and Communications are responsible for organizing the implementation, guidance, and management of radio equipment according to this standard;

6.2. This standard replaces National Technical Regulation QCVN 111:2017/BTTTT "National Technical Standard for Mobile Information Repeater Devices E-UTRA FDD - Radio Access Part";

6.3. In cases where the provisions set forth in this Standard are changed, supplemented, or replaced, they shall be implemented according to the new document.

6.4. During the implementation of this standard, if any issues arise, organizations and individuals concerned should reflect them in writing to the Ministry of Information and Communications (Science and Technology Department) for guidance and resolution;

 

 

 

 

 

 

 

 

 

 

 

ANNEX A

Product Name, Goods According to QCVN

Device Repeater Configurations

A.1. Power Supply

When power supply conditions designated for testing have been specified, testing must be carried out at the upper and lower reference limits of the operating voltage determined by the manufacturer for the device to be tested;

Upper Voltage Limit:

The device must be supplied with a voltage equal to the upper limit published by the manufacturer (measured at the device inputs). Testing must be conducted at the minimum and maximum stable temperatures published by the manufacturer for the device, using methods described in TCVN 7699-2-1 and TCVN 7699-2-2;

Lower Voltage Limit:

The device must be supplied with a voltage equal to the lower limit published by the manufacturer (measured at the device inputs). Testing must be conducted at the minimum and maximum stable temperatures published by the manufacturer for the device, using methods described in TCVN 7699-2-1 and TCVN 7699-2-2;

A.2. Power Supply Options

If the repeater is supplied with different power supply configurations, it may not be necessary to test RF parameters for each power supply option, provided it can be demonstrated that the range of conditions under which the repeater is tested is at least as broad as the range of conditions for any power supply configuration;

A.3. Coordination of Repeaters

If the repeater is intended to be coordinated with supplementary equipment connected to its ports and this coordination is provided as a system, the coordination of the repeater with supplementary equipment must also meet the requirements of the repeater. For example, if the repeater is intended to coordinate so that multiple repeaters amplify similar signals into the same ports, this coordination must also meet the requirements of the repeater;

An example of repeater coordination configuration is described in Figure A.1;

 

Figure A. 1- Example of Repeater Configuration

 

Provisions on the HS Code of Terrestrial Mobile Radio Equipment and Terrestrial Radio Relay Equipment

(For reference)

Environmental Conditions Requirements

The following environmental conditions are declared by the supplier:

- Air pressure: lowest and highest;

- Temperature: lowest and highest;

- Relative humidity: lowest and highest;

- Power supply: upper and lower voltage limits;

B.1. Normal Testing Environment

When a normal testing environment is specified, testing must be conducted within the lowest and highest limits of the conditions listed in Table B.1;

Table B. 1- Limits of Conditions for Normal Testing Environment

The atmospheric pressure ranges, temperature, and humidity above correspond to the maximum variations expected in an uncontrolled environment of a laboratory. If it is not possible to maintain these parameters within the specified limits, the actual values must be recorded in the measurement report.

NOTE: For example, radiation emission measurements in an extended test site.

B.2. Limiting Measurement Environment

The manufacturer must declare one of the following conditions:

1. Type of equipment representative of the equipment to be measured, as defined in TCVN 7921-3-3.
2. Type of equipment representative of the equipment to be measured, as defined in TCVN 7921-3-4.
3. For equipment that does not conform to the types mentioned above, the relevant types in the TCVN 7921 series concerning temperature, humidity, and vibration must be declared.

NOTE: Performance degradation due to environmental conditions outside the standard operating conditions is not measured in this standard. These environmental conditions may be specified and measured separately.

B.2.1. Temperature Limits

When a limiting temperature measurement environment is specified for a measurement, the measurement must be performed at the lowest and highest standard operating temperatures published by the manufacturer for the equipment to be measured.

Lowest temperature:

The measurement must be carried out with the equipment and environmental measurement methods, including environmental phenomena affecting the equipment, according to the measurement procedure of TCVN 7699-2-1.

Highest temperature:

The measurement must be carried out with the equipment and environmental measurement methods, including environmental phenomena affecting the equipment, according to the measurement procedure of TCVN 7699-2-2.

NOTE: It is recommended that the equipment be fully functional before being brought to its lowest operating temperature.

B.3. Vibration

When vibration conditions are specified for a measurement, the measurement must be performed when the equipment is subjected to vibration according to a sequence determined by the manufacturer's declaration for the measuring equipment. The measurement must use the equipment and environmental measurement methods, including environmental phenomena affecting the equipment, according to the measurement procedure of TCVN 7699-2-6. Other environmental conditions must be within the range specified in B.1.

NOTE: Higher vibration levels may cause excessive physical stress inside the equipment after a prolonged measurement period. The measurement group should only vibrate the equipment during RF measurement.

 

 

 

 

 

 

 

 

 

 

 

 

 

Annex C

(For reference)

Measurement system diagram for mobile repeater station

C.1. Maximum Output Power

 

 

Figure C. 1– Maximum power measurement system diagram

Note that the repeater station equipment is bidirectional equipment. Signal generators may require protection.

C.2. Out-of-Band Spurious Emission

 

Figure C. 2– Out-of-band spurious emission measurement system diagram

Note that the repeater station equipment is bidirectional equipment. Signal generators may require protection.

C.2. Unwanted Emission: Unwanted Emission in Operating Band

 

Figure C. 3– Unwanted emission measurement system diagram: For E-UTRA FDD repeater equipment operating in bands 1, 3, 5, and 8, emissions shall not exceed the limits specified in Tables 3 to 5. Measurements are applied to both uplink and downlink of the repeater equipment.

Note that the repeater station equipment is bidirectional equipment. Signal generators may require protection.

C.4. Unwanted Emission: Spurious Emission

 

Figure C. 4– Unwanted emission measurement system diagram: Spurious emissions

Note that the repeater station equipment is bidirectional equipment. Signal generators may require protection.

C.5. Input Intermodulation

 

Figure C. 5– Input intermodulation measurement system diagram

Note that the repeater station equipment is bidirectional equipment. Signal generators may require protection.

C.6. Output Intermodulation

 

 

Figure C. 6– Output intermodulation measurement system diagram

Note that the repeater station equipment is bidirectional equipment. Signal generators may require protection.

C.7. Adjacent Channel Compression Factor

 

Figure C. 7– Adjacent channel compression factor measurement system diagram

Note that the repeater station equipment is bidirectional equipment. Signal generators may require protection.

Appendix D

(For reference)

Reference input signal for repeater station equipment

The reference channels or test models generating the reference input signal for the repeater station equipment must meet the purity spectrum requirements specified in Table D.1. In which:

• The reference spectrum density is taken from the carrier frequency center of 200 kHz with an integrated bandwidth of 30 kHz.
• ∆f is the deviation from the edge frequency band of the nearest measurement filter and the -3 dB point of the filter to the carrier frequency.
• is the f_offset of the frequency outside 10 MHz relative to the repeater equipment's operating bandwidth.
• Maximum value of f_offset used to determine the requirement_max is the frequency deviation of the frequency outside the 10 MHz operating band of the repeater station equipment.
• Distance between the nominal passband edge frequency and the -3 dB point of the nearest test filter relative to the carrier wave frequency._max minus half the bandwidth of the measurement filter._max All requirements are measured using root mean square (RMS) power.
• The minimum spectrum density reduction is related to the reference spectrum density.

Table D. 1– Requirements for the purity spectrum of the reference input signal for repeater station equipment

 

Appendix E

(Regulation) HS Code for Mobile Repeater Station Equipment E-UTRA FDD

Mobile Repeater Station Equipment E-UTRA FDD