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HJ 1151-2020: (5G Mobile Communication Base Station Electromagnetic Radiation Environmental Monitoring Method (Trial))
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| HJ 1151-2020 | English | 339 |
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(5G Mobile Communication Base Station Electromagnetic Radiation Environmental Monitoring Method (Trial))
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HJ 1151-2020
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PDF similar to HJ 1151-2020
Standard similar to HJ 1151-2020 GB/T 3222.1 JJG 188 HJ 1152 Basic data | Standard ID | HJ 1151-2020 (HJ1151-2020) | | Description (Translated English) | (5G Mobile Communication Base Station Electromagnetic Radiation Environmental Monitoring Method (Trial)) | | Sector / Industry | Environmental Protection Industry Standard | | Classification of Chinese Standard | A58 | | Word Count Estimation | 16,150 | | Date of Issue | 2020-12-14 | | Date of Implementation | 2021-03-01 | | Regulation (derived from) | Ministry of Ecology and Environment Announcement No. 64 of 2020 | | Issuing agency(ies) | Ministry of Ecology and Environment | HJ 1151-2020: (5G Mobile Communication Base Station Electromagnetic Radiation Environmental Monitoring Method (Trial))
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(5G Mobile Communication Base Station Electromagnetic Radiation Environmental Monitoring Method (Trial))
5G mobile communication base station electromagnetic radiation environment monitoring method
(Trial)
Monitoring method for electromagnetic radiation environment
of 5G mobile communication base station
(On trial)
National Environmental Protection Standards of the People's Republic of China
2020-12-14 release
2021-03-01 implementation
Issued by the Ministry of Ecology and Environment
Table of contents
Foreword...ii
1 Scope of application...1
2 Terms and definitions...1
3 Monitoring conditions...1
4 Monitoring methods...2
5 Quality Assurance...3
Appendix A (informative appendix) 5G mobile communication base station electromagnetic radiation environment monitoring record and report format...5
Foreword
In order to implement the "Environmental Protection Law of the People's Republic of China", protect the environment, prevent electromagnetic radiation environmental pollution, and standardize the 5G mobile communication base
Environmental monitoring of electromagnetic radiation of the station, the formulation of this standard.
This standard specifies the technical requirements for the content and method of electromagnetic radiation environmental monitoring of 5G mobile communication base stations. This standard replaces
Environmental Monitoring Methods for Electromagnetic Radiation of Information Base Stations (HJ 972-2018) as the electromagnetic radiation of 5G and mobile communication base stations co-located with other network standards
Implementation standards for radio environmental monitoring.
This standard is issued for the first time.
Appendix A of this standard is an informative appendix.
This standard was formulated by the Department of Radiation Source Safety Supervision and the Department of Regulations and Standards of the Ministry of Ecology and Environment.
The main drafters of this standard. Radiation Environment Monitoring Technology Center of Ministry of Ecology and Environment, China Academy of Information and Communications Technology, National Radio Monitoring
center.
This standard was approved by the Ministry of Ecology and Environment on December 14, 2020.
This standard will be implemented on March 1, 2021.
This standard is interpreted by the Ministry of Ecology and Environment.
5G Mobile Communication Base Station Electromagnetic Radiation Environmental Monitoring Method (Trial)
1 Scope of application
This standard specifies the technical requirements for the content and method of electromagnetic radiation environmental monitoring of 5G mobile communication base stations with operating frequencies less than 6 GHz.
This standard applies to the environmental monitoring of electromagnetic radiation of 5G mobile communication base stations. There are 5G and other network standards for mobile communication at the same site
Information base station, electromagnetic radiation environmental monitoring is implemented in accordance with the provisions of this standard.
2 Terms and definitions
The following terms and definitions apply to this standard.
2.1 base station
A land station in the land mobile service is a wireless transceiver equipment that serves a cell or multiple cells on the same site. Base station passes without
The wire interface provides a wireless channel with the terminal.
2.2 5G user equipment
Terminal equipment that carries 5G mobile communication services.
2.3 Electromagnetic radiation environment-sensitive target
Objects that need to be focused on in the environmental impact assessment and monitoring of electromagnetic radiation. Including houses, schools, hospitals, office buildings, factories, etc.
The building where you live, work or study.
2.4 application scenario
5G mobile communication application scenarios include. enhanced mobile broadband (eMBB), ultra-high reliability and low latency communication (uRLLC), large
Large-scale machine communication (mMTC), such as data transmission, video interaction, game entertainment, virtual shopping, smart medical, industrial applications and vehicles
Scenes such as networking.
3 Monitoring conditions
3.1 Environmental conditions
The environmental conditions during monitoring should meet the requirements for the use of monitoring instruments.
3.2 Monitoring equipment
3.2.1 Basic requirements
The working performance of the monitoring instrument should meet the requirements of the electromagnetic field to be measured. The detection method of the monitoring instrument is the root-mean-square detection method.
The reading is the average of any continuous 6 minutes.
When monitoring, a frequency-selective electromagnetic radiation monitor should be used, and the monitoring frequency should be selected when the transmitting antenna of the mobile communication base station under test is working.
Line frequency band.
When conducting electromagnetic radiation environmental monitoring for mobile communication base stations with 5G and other network standards at the same site, use frequency-selective electromagnetic radiation
The list mode of the radio monitor can obtain the electromagnetic radiation field strength data of 5G and other network standard mobile communication base stations.
During monitoring, if the probe (antenna) of the monitoring instrument is an isotropic probe, it should meet the isotropic index requirements in Table 1; if
If a non-isotropic probe is used, the influence of antenna directivity should be considered, and the antenna factor and other parameters should be synthesized during the result processing.
Adjust the detection direction until the maximum field strength value is measured; the support of the monitoring instrument should be made of a non-conductive material that is not susceptible to moisture.
3.2.2 Basic requirements for electrical performance of frequency selective electromagnetic radiation monitor
The frequency-selective electromagnetic radiation monitor refers to the ability to receive and process the spectral components of a specific emission within the response frequency range of the instrument
The basic requirements for electrical performance of the field quantity monitoring instrument are shown in Table 1.
Table 1 Basic requirements for electrical performance of frequency selective electromagnetic radiation monitor
4 Monitoring method
4.1 Data collection
Before starting the monitoring work, the basic information of the tested 5G mobile communication base station should be collected, including. base station name, operating unit, construction site
Point, transmitting frequency range, antenna support type, number of antennas, operating status and height of antenna from the ground, etc.
According to the nature and purpose of monitoring, other information can be collected, including. latitude and longitude coordinates, transmitter model, nominal power, and actual transmission
Power, antenna gain, average load, antenna downtilt angle (mechanical downtilt angle electronic downtilt angle), antenna lobe width (horizontal width, vertical
Straight width) and antenna pattern and other parameters.
Mobile communication base stations with other network standards at the same site should also collect the same basic information.
4.2 Monitoring factors
The monitoring factor of the electromagnetic radiation environment of the mobile communication base station is the radio frequency electromagnetic field, and the monitoring parameter is the power density.
4.3 Monitoring points
The monitoring points should be arranged at the electromagnetic radiation environment-sensitive targets within the coverage of the antenna of the mobile communication base station, and should be arranged in public residential areas first.
Live, work or study at the closest place to the antenna, but it is not suitable to be deployed where tools (such as ladders) or special methods (such as climbing) are needed to reach
s position.
When monitoring in a building, the monitoring point can be placed at the position of the window (balcony) facing the base station antenna, and the probe (antenna) tip of the monitoring instrument
The end should be within the window frame (balcony) interface, and it can also be arranged in other indoor locations. Between the monitoring instrument probe (antenna) and household appliances and other equipment
The distance is not less than 1m.
4.4 Monitoring height
The probe (antenna) of the monitoring instrument is 1.7m away from the ground (or standing plane). You can also select the monitoring height according to different purposes, and
Noted in the report.
4.5 Monitoring working conditions and 5G terminal equipment
During monitoring, the monitored mobile communication base station should be in normal working condition, and the 5G terminal equipment should be built with the monitored 5G mobile communication base station.
It is connected to at least one typical application scenario.
During monitoring, the probe (antenna) of the monitoring instrument is placed on the support of the monitoring instrument, and the distance between the tip of the probe (antenna) and the operator’s torso
Not less than 0.5m, and kept within the range of 1m to 3m with 5G terminal equipment; avoid or minimize other sources of electromagnetic radiation that occasionally occur nearby
Interference and monitoring instrument bracket leakage current.
4.6 Monitoring readings
The monitoring time for each monitoring point is not less than 6 minutes, and the average value of the monitoring instrument is read.
4.7 Record
4.7.1 Record of base station information
Record the relevant information collected in Section 4.1.
4.7.2 Records of monitoring conditions
Record the ambient temperature, relative humidity and weather conditions.
Record the monitoring date, monitoring start and end time, monitoring personnel, monitoring frequency range, monitoring instrument and probe (antenna) model and serial number,
Monitoring instrument and probe (antenna) calibration/verification certificate (report) number.
Record application scenarios during monitoring, 5G terminal equipment model, quantity, application scenarios, etc.
4.7.3 Record of monitoring information and results
Record the schematic diagram of the site monitoring points, and mark the 5G mobile communication base station antennas, monitoring points and other known electromagnetic radiation sources.
Record the name of the monitoring point (or latitude and longitude), the vertical distance and the horizontal distance between the monitoring point and the 5G mobile communication base station transmitting antenna
And monitoring data.
Keep the spectrum distribution map during monitoring.
Refer to Appendix A for the content and format of on-site monitoring records.
5 Quality Assurance
The monitoring agency shall have the capabilities and conditions suitable for the electromagnetic radiation environment monitoring business it is engaged in.
The selection of monitoring points should be representative and meet the requirements of section 4.3.
Monitoring instruments (including antennas or probes) should be periodically verified or calibrated and used within the validity period of their certificate.
The instrument should be checked before and after each monitoring to ensure that the instrument is in normal working condition.
The monitoring personnel should receive professional training, and the on-site monitoring work should be carried out by no less than 2 monitoring personnel.
Interference factors should be excluded during monitoring, including man-made interference factors and environmental interference factors.
The selection of abnormal data in monitoring and the data processing of monitoring results should be handled in accordance with statistical principles.
Any archived or reported monitoring results should be reviewed.
A complete file of monitoring documents should be established.
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