CN114157373A - Rail transit wireless communication interference test method and device - Google Patents
Rail transit wireless communication interference test method and device Download PDFInfo
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- CN114157373A CN114157373A CN202111480978.9A CN202111480978A CN114157373A CN 114157373 A CN114157373 A CN 114157373A CN 202111480978 A CN202111480978 A CN 202111480978A CN 114157373 A CN114157373 A CN 114157373A
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- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/243—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences
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Abstract
The invention provides a method and a device for testing wireless communication interference of rail transit, wherein the device comprises the following components: the device comprises a regulating module, a radio frequency module and a power supply module; wherein: the adjusting module configures adjusting parameters for the radio frequency module; the radio frequency module includes: the radio frequency generator comprises a controller, a radio frequency generator, a power regulator and an antenna unit; the controller receives the adjusting parameters from the adjusting module and sends control information to the radio frequency generator and the power adjuster based on the adjusting parameters; the radio frequency generator generates an LTE adjacent frequency broadband signal based on the control information of the controller; the power regulator regulates the LTE adjacent frequency broadband signal based on the control information of the controller and outputs the regulated LTE adjacent frequency broadband signal to the antenna unit; and the antenna unit transmits the received LTE adjacent frequency broadband signal. The invention generates the same interference signal as the adjacent frequency base station without starting a train, realizes the interference to the LTE system, greatly simplifies the operation, saves the expenditure and reduces the cost.
Description
Technical Field
The invention belongs to the technical field of wireless communication, particularly relates to the technical field of wireless communication in rail transit, and particularly relates to a rail transit wireless communication interference testing method and device.
Background
The rail transit wireless communication comprises a plurality of systems of private business communication and public business communication, and in order to ensure good coverage of wireless signals and monitor whether other interference signals exist in a communication frequency band, the signals of a plurality of wireless frequency bands need to be regularly subjected to routing inspection along the line. The special service communication generally uses an LTE-M rail transit private network, which works at 1785M-1805M. In addition, the filter characteristic of the receiver is not perfect, part of signals of adjacent channels and signals of a target section can be received together, the in-band and out-band blocking of signal receiving can be caused, and when the interference of adjacent frequency signals reaches a certain degree, the communication safety of the train can be seriously influenced. The existing field test method comprises the following steps: and starting the adjacent frequency communication equipment to enable the adjacent frequency communication equipment to work at the maximum power, starting a train LTE system, moving a train body at a low speed near interference, searching a maximum interference place, and then testing the interference power ratio of the LTE adjacent channel. The main disadvantage is that after the interference is found, it is difficult to determine the true location of the interference source, which requires further investigation by other means.
Disclosure of Invention
In view of the above drawbacks of the prior art, an object of the present invention is to provide a method and an apparatus for testing interference of rail transit wireless communication, which are used to generate the same interference signal as that of a frequency-adjacent base station, so as to detect an adjacent channel interference power ratio of an LTE system under interference.
To achieve the above and other related objects, an embodiment of the present invention provides a rail transit wireless communication interference testing apparatus, including: the device comprises a regulating module, a radio frequency module and a power supply module; wherein: the power supply module supplies power to the adjusting module and the radio frequency module; the adjusting module configures adjusting parameters for the radio frequency module; the radio frequency module includes: the radio frequency generator comprises a controller, a radio frequency generator, a power regulator and an antenna unit; the controller is connected with the adjusting module, receives the adjusting parameters from the adjusting module and sends control information to the radio frequency generator and the power adjuster based on the adjusting parameters; the radio frequency generator is connected with the controller and generates an LTE adjacent frequency broadband signal based on the control information of the controller; the power regulator is respectively connected with the controller and the radio frequency generator, regulates the LTE adjacent frequency broadband signal based on the control information of the controller, and outputs the regulated LTE adjacent frequency broadband signal to the antenna unit; and the antenna unit transmits the received LTE adjacent frequency broadband signal.
In an embodiment of the present application, the adjustment module includes an adjustment panel.
In an embodiment of the present application, the adjustment parameter includes a plurality of combinations of an environment type, an interference source type, a bandwidth, a horizontal distance, a vertical height, an incoming wave direction, and a power.
In an embodiment of the present application, the environment type is a tunnel or a ground; the type of the interference source is the name of an adjacent channel interference system; the horizontal distance is the horizontal distance between the on-site train vehicle-mounted terminal and the interference source; the vertical height is the vertical height between the on-site train-mounted terminal and the interference source; the incoming wave direction is the included angle between the interference source antenna and the main direction of the vehicle-mounted terminal antenna at the moment of maximum interference.
In an embodiment of the present application, the obtaining, by the controller, control information for controlling the rf generator based on the adjustment parameter includes: acquiring radio frequency, a signal modulation mode and bandwidth in a table look-up mode; the controller controls the radio frequency generator to generate an LTE adjacent frequency broadband signal based on the radio frequency, the signal modulation mode and the bandwidth.
In an embodiment of the present application, the obtaining, by the controller, control information for controlling the power regulator based on the adjustment parameter includes: acquiring a channel attenuation signal based on an environment type, a horizontal distance and a vertical height, and adjusting the channel attenuation signal based on the environment type and an incoming wave direction; the controller outputs the adjusted channel attenuation signal to the power regulator.
In an embodiment of the present application, the antennas in the antenna units are configured based on different adjacent frequency and different radiation angles.
The embodiment of the invention also provides a rail transit wireless communication interference test method, which comprises the following steps: configuring adjustment parameters; generating control information for controlling the radio frequency generator and the power regulator based on the adjusting parameter; the radio frequency generator generates an LTE adjacent frequency broadband signal based on the control information of the controller; the power regulator regulates the LTE adjacent frequency broadband signal based on the control information; and transmitting the adjusted LTE adjacent frequency broadband signal.
In an embodiment of the present application, the adjustment parameter includes a plurality of combinations of an environment type, an interference source type, a bandwidth, a horizontal distance, a vertical height, an incoming wave direction, and a power; the environment types are tunnel and ground; the type of the interference source is the name of an adjacent channel interference system; the horizontal distance is the horizontal distance between the on-site train vehicle-mounted terminal and the interference source; the vertical height is the vertical height between the on-site train-mounted terminal and the interference source; the incoming wave direction is the included angle between the interference source antenna and the main direction of the vehicle-mounted terminal antenna at the moment of maximum interference.
In an embodiment of the application, the generating control information for controlling the rf generator based on the adjustment parameter includes: acquiring radio frequency, a signal modulation mode and bandwidth in a table look-up mode; generating control information for controlling the power regulator based on the regulation parameter includes: and acquiring a channel attenuation signal based on the environment type, the horizontal distance and the vertical height, and adjusting the channel attenuation signal based on the environment type and the incoming wave direction.
As described above, the rail transit wireless communication interference test method and device of the present invention have the following beneficial effects:
the invention does not need to start a train, places the device at a specific distance point near the train antenna, and can generate the same interference signal as the adjacent frequency base station by adjusting the parameters on the panel of the device, thereby realizing the interference on the LTE system, being used for detecting the adjacent channel interference power ratio of the LTE system under the interference on site, greatly simplifying the operation, saving the expenditure and reducing the cost.
Drawings
Fig. 1 is a block diagram illustrating an overall schematic structure of a rail transit wireless communication interference testing apparatus according to the present invention.
Fig. 2 is a testing flowchart of the rail transit wireless communication interference testing apparatus according to the present invention.
Fig. 3 is a schematic overall flow chart of the rail transit wireless communication interference testing method according to the present invention.
Description of the element reference numerals
100 rail transit wireless communication interference testing device
110 power supply module
120 adjustment module
121 adjustment panel
130 radio frequency module
131 controller
132 radio frequency generator
133 power regulator
134 antenna unit
S100 to S500
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.
The present embodiment aims to provide a method and an apparatus for testing interference of rail transit wireless communication, which are used to generate an interference signal identical to that of a frequency-adjacent base station, so as to detect an adjacent channel interference power ratio of an LTE system under interference.
The principle and the implementation of the method and the device for testing wireless communication interference of rail transit according to the present invention will be described in detail below, so that those skilled in the art can understand the method and the device for testing wireless communication interference of rail transit without creative work.
As shown in fig. 1, the present embodiment provides a rail transit wireless communication interference testing apparatus 100, where the rail transit wireless communication interference testing apparatus 100 includes: a regulation module 120, a radio frequency module 130, and a power supply module 110.
In this embodiment, the power module 110 supplies power to the adjusting module 120 and the rf module 130.
In this embodiment, the adjusting module 120 configures adjusting parameters for the rf module 130. Specifically, in the present embodiment, the adjusting module 120 includes an adjusting panel 121.
In this embodiment, the adjustment parameters include various combinations of environment types, interference source types, bandwidths, horizontal distances, vertical heights, incoming wave directions, and powers.
Further, in the present embodiment, the environment type is a tunnel or a ground; the type of the interference source is the name of an adjacent channel interference system; the horizontal distance is the horizontal distance between the on-site train vehicle-mounted terminal and the interference source; the vertical height is the vertical height between the on-site train-mounted terminal and the interference source; the incoming wave direction is the included angle between the interference source antenna and the main direction of the vehicle-mounted terminal antenna at the moment of maximum interference.
In this embodiment, the rf module 130 includes: a controller 131, a radio frequency generator 132, a power regulator 133, and an antenna unit 134. The controller 131 is connected to the adjusting module 120, receives the adjusting parameter from the adjusting module 120, and sends control information to the rf generator 132 and the power adjuster 133 based on the adjusting parameter; the radio frequency generator 132 is connected to the controller 131, and generates an LTE adjacent channel wideband signal based on the control information of the controller 131; the power regulator 133 is connected to the controller 131 and the radio frequency generator 132, respectively, and regulates the LTE adjacent frequency broadband signal based on the control information of the controller 131, and outputs the regulated LTE adjacent frequency broadband signal to the antenna unit 134; the antenna unit 134 transmits the received LTE adjacent frequency broadband signal.
In this embodiment, the obtaining, by the controller 131, the control information for controlling the rf generator 132 based on the adjustment parameter includes: acquiring radio frequency, a signal modulation mode and bandwidth in a table look-up mode; the controller 131 controls the rf generator 132 to generate an LTE adjacent channel wideband signal based on the rf frequency, the signal modulation scheme, and the bandwidth.
In this embodiment, the acquiring, by the controller 131, the control information for controlling the power regulator 133 based on the adjustment parameter includes: acquiring a channel attenuation signal based on an environment type, a horizontal distance and a vertical height, and adjusting the channel attenuation signal based on the environment type and an incoming wave direction; the controller 131 outputs the adjusted channel attenuation signal to the power conditioner 133.
In this embodiment, the antennas in the antenna unit 134 are configured based on different adjacent frequencies and different radiation angles.
In this embodiment, as shown in fig. 2, the rail transit wireless communication interference testing apparatus 100 is installed at a designated location, then various parameter data are obtained according to the installed location, parameters of the adjusting module 120 are adjusted according to the obtained parameter data, and the radio frequency module 130 transmits and adjusts signals according to the parameters of the adjusting module 120.
Further, according to the parameters of the adjusting module 120, the rf module 130 transmits and adjusts signals, which specifically includes: the control unit receives the parameters of the adjusting module 120 and sends control information to the radio frequency unit and the power adjusting unit; the radio frequency unit receives a control signal sent by the control unit and generates an LTE adjacent frequency broadband signal; the power adjusting unit receives the control signal sent by the control unit and adjusts the LTE adjacent frequency broadband signal generated by the radio frequency unit.
The rail transit wireless communication interference testing device 100 of the embodiment has the functions of an interference source and an intelligent channel meter, and is used for testing the adjacent channel interference power ratio of the rail transit LTE system. The rail transit wireless communication interference testing device 100 of the embodiment is placed at a specific distance point near a train antenna, generates the same interference signal as an adjacent frequency base station, and is used for detecting the adjacent channel interference power ratio of an LTE system under interference on site.
The rail transit wireless communication interference testing device 100 of the embodiment does not need to start a train, and only needs to be placed near the vehicle-mounted terminal, and parameters on the panel of the device are adjusted to generate corresponding adjacent frequency signals to implement interference on the LTE, so that the operation is greatly simplified, and the expenditure is saved.
The following describes in further detail the usage process of the rail transit wireless communication interference testing apparatus 100 of the present embodiment.
Adjusting knobs such as environment type, frequency, bandwidth, horizontal distance, vertical height, incoming wave direction, power and the like of the interference source are arranged on the adjusting panel 121. The power module 110 is used to generate the dc power required by the device. The environment type is marked as a tunnel and the ground, the interference source type is marked as an adjacent frequency interference system name, the horizontal distance is the horizontal distance between the on-site train vehicle-mounted terminal and the interference source, the vertical height is the vertical height between the on-site train vehicle-mounted terminal and the interference source, and the incoming wave direction is the included angle between the interference source antenna and the main direction of the vehicle-mounted terminal antenna at the moment of maximum interference.
The controller 131 receives information from the adjustment panel 121 and sends control information to the rf generator 132 and the power adjuster 133 through look-up tables and calculations. The rf generator 132 is controlled by the controller 131 to generate the LTE adjacent channel wideband signal. The power adjuster 133 is controlled by the controller 131 to adjust the power of the LTE adjacent channel wideband signal. The antenna interface is used to connect the power regulator 133 with the antenna. The antennas are configured according to different adjacent frequency frequencies and different radiation angles.
The controller 131 converts the interference source data from the control panel into parameters such as frequency, bandwidth, modulation method, etc. according to the standard of the communication system to control the rf generator 132 to generate a standard interference signal. The controller 131 converts the environment type, horizontal distance, vertical height, incoming wave direction and other data transmitted from the panel into channel parameters according to the rule of electromagnetic wave transmission in space to control the power regulator 133. The power regulator 133 generates an LTE adjacent-frequency broadband signal, and transmits the radio signal through the antenna interface and the matching antenna.
Firstly, the rail transit wireless communication interference testing device 100 of the embodiment is applied to a field testing scheme:
aiming at the adjacent channel interference of a GSM1800M system erected beside a ground track traffic route, if the system belongs to China Mobile 2G, the frequency is set as follows: uplink/downlink: 1710-. The influence of the interference of the base station of the GSM1800M system on the traffic information flow of the rail transit LTE communication system can be detected by the following operations:
1) the environment type sets a first gear on the adjustment panel 121: the "ground".
2) The interference source type on the adjustment panel 121 sets a first gear: "China Mobile GSM 1800M".
3) The interference source frequency information of the adjustment panel 121 is received at the controller 131 and control information is sent to the rf generator 132 and the power adjuster 133. The RF generator 132 is controlled by the controller 131 to generate 1805 and 1815MHz broadband signals.
4) The base station is measured to be at a horizontal distance of 50m from the center of the track, and the horizontal distance on the adjustment panel 121 is set to be 50 m.
5) The height of the base station vertical to the track surface is measured to be 20m, and the vertical height on the adjustment panel 121 is set to be 20.
6) The height of the base station vertical to the track surface is measured to be 20m, and the vertical height on the adjustment panel 121 is set to be 20.
7) In order to test the maximum interference, the incoming wave direction of the base station is a vertical track, and the incoming wave direction of the base station on the adjustment panel 121 is 0.
8) Assuming that the nominal power transmitted by the GSM1800M base station in china is 46dBm, the power on the adjustment panel 121 is set to 46.
9) The other knobs of the adjustment panel 121 are set to default values.
10) The controller 131 solidifies the basic algorithm of channel attenuation in advance according to the formula of electromagnetic field propagation loss in space according to the rule of electromagnetic wave transmission in space, and converts the data of power, horizontal distance, vertical height, incoming wave direction and the like transmitted from the panel into channel parameters to control the power regulator 133. The interference signal sent by the device is the same as the downlink signal of the actual China Mobile GSM1800M base station.
11) The device is placed at a standard distance of 5m near the train antenna, an omnidirectional antenna is installed, the device is started, and the same interference signal as the adjacent frequency base station is sent.
12) And starting the vehicle-mounted LTE terminal according to the original operation steps of the train LTE-M, and loading the CBTC transmission service.
13) According to the network monitoring method when the original LTE-M carries the service, the adjacent channel interference power ratio of the LTE system under the interference is detected.
Second, the rail transit wireless communication interference testing apparatus 100 of the present embodiment is applied to a laboratory testing scheme:
aiming at the adjacent channel interference of a GSM1800M system erected beside a ground track traffic route, if the system belongs to China Mobile 2G, the frequency is set as follows: uplink/downlink: 1710-.
The method can detect the influence on the service information flow when the system base station interferes with the rail transit LTE communication by the following operations:
1) to 10) 1) to 10) as described above for use in the field test protocol.
11) The device is placed in a laboratory, and the device is connected with the vehicle-mounted LTE terminal and started by a radio frequency short circuit and a fixed attenuator.
12) And starting the vehicle-mounted LTE terminal according to the original operation steps of the train LTE-M, and loading the CBTC transmission service.
13) According to the network monitoring method when the original LTE-M carries the service, the adjacent channel interference power ratio of the LTE system under the interference is detected.
The rail transit wireless communication interference testing device 100 of the embodiment has the functions of an interference source and an intelligent channel instrument and is used for testing the adjacent channel interference power ratio of the rail transit LTE system. When the rail transit wireless communication interference testing device 100 of the embodiment is placed in a laboratory for use, an antenna port of the device is connected to an LTE vehicle-mounted antenna port, and an interference signal identical to that of an adjacent frequency base station is generated, so that the interference power ratio of an adjacent channel of an LTE system under interference is detected in the laboratory. The controller 131 converts the interference source data transmitted from the panel into parameters such as frequency, bandwidth, modulation method, etc. according to the standard of the communication system to control the rf generator 132 to generate a standard interference signal. The controller 131 converts the environment type, horizontal distance, vertical height, incoming wave direction and other data transmitted from the control panel into channel parameters to control the power regulator 133 according to the rule of electromagnetic wave transmission in space.
By using the rail transit wireless communication interference testing device 100 of the embodiment, the interference of the rail transit wireless communication interference testing device 100 to the LTE can be realized by only placing the rail transit wireless communication interference testing device 100 near the vehicle-mounted terminal and adjusting the parameters on the control panel, so that the operation is greatly simplified, the expenditure is saved, and the cost is reduced.
As shown in fig. 3, the present embodiment further provides a method for testing interference of rail transit wireless communication, including:
step S100, configuring adjusting parameters;
step S200, generating control information for controlling the rf generator 132 and the power regulator 133 based on the adjustment parameter;
step S300, the radio frequency generator 132 generates an LTE adjacent channel wideband signal based on the control information of the controller 131;
step S400, the power adjuster 133 adjusts the LTE adjacent frequency broadband signal based on the control information;
and step S500, transmitting the adjusted LTE adjacent frequency broadband signal.
In this embodiment, the adjustment parameters include various combinations of environment types, interference source types, bandwidths, horizontal distances, vertical heights, incoming wave directions, and powers; the environment types are tunnel and ground; the type of the interference source is the name of an adjacent channel interference system; the horizontal distance is the horizontal distance between the on-site train vehicle-mounted terminal and the interference source; the vertical height is the vertical height between the on-site train-mounted terminal and the interference source; the incoming wave direction is the included angle between the interference source antenna and the main direction of the vehicle-mounted terminal antenna at the moment of maximum interference.
In this embodiment, the generating the control information for controlling the rf generator 132 based on the adjustment parameter includes: acquiring radio frequency, a signal modulation mode and bandwidth in a table look-up mode; generating control information for controlling the power regulator 133 based on the regulation parameter includes: and acquiring a channel attenuation signal based on the environment type, the horizontal distance and the vertical height, and adjusting the channel attenuation signal based on the environment type and the incoming wave direction.
The implementation principle of the method for testing interference of rail transit wireless communication in this embodiment is the same as that of the device 100 for testing interference of rail transit wireless communication, and the same technical features are not repeated.
In conclusion, the device is placed at a specific distance point near the train antenna without starting a train, parameters on a panel of the device are adjusted to generate the same interference signal as that of the adjacent frequency base station, interference on the LTE system is realized, the device is used for detecting the adjacent channel interference power ratio of the LTE system under the interference on site, the operation is greatly simplified, the expenditure is saved, and the cost is reduced. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A rail transit wireless communication interference testing device is characterized by comprising: the device comprises a regulating module, a radio frequency module and a power supply module; wherein:
the power supply module supplies power to the adjusting module and the radio frequency module;
the adjusting module configures adjusting parameters for the radio frequency module;
the radio frequency module includes: the radio frequency generator comprises a controller, a radio frequency generator, a power regulator and an antenna unit;
the controller is connected with the adjusting module, receives the adjusting parameters from the adjusting module and sends control information to the radio frequency generator and the power adjuster based on the adjusting parameters;
the radio frequency generator is connected with the controller and generates an LTE adjacent frequency broadband signal based on the control information of the controller;
the power regulator is respectively connected with the controller and the radio frequency generator, regulates the LTE adjacent frequency broadband signal based on the control information of the controller, and outputs the regulated LTE adjacent frequency broadband signal to the antenna unit;
and the antenna unit transmits the received LTE adjacent frequency broadband signal.
2. The rail transit wireless communication interference testing device of claim 1, wherein the adjustment module comprises an adjustment panel.
3. The rail transit wireless communication interference testing device according to claim 1 or 2, wherein the adjusting parameters comprise various combinations of environment type, interference source type, bandwidth, horizontal distance, vertical height, incoming wave direction and power.
4. The rail transit wireless communication interference testing device of claim 3, wherein the environment type is tunnel, ground; the type of the interference source is the name of an adjacent channel interference system; the horizontal distance is the horizontal distance between the on-site train vehicle-mounted terminal and the interference source; the vertical height is the vertical height between the on-site train-mounted terminal and the interference source; the incoming wave direction is the included angle between the interference source antenna and the main direction of the vehicle-mounted terminal antenna at the moment of maximum interference.
5. The rail transit wireless communication interference testing device of claim 1, wherein the controller obtaining control information for controlling the radio frequency generator based on the adjustment parameter comprises: acquiring radio frequency, a signal modulation mode and bandwidth in a table look-up mode; the controller controls the radio frequency generator to generate an LTE adjacent frequency broadband signal based on the radio frequency, the signal modulation mode and the bandwidth.
6. The rail transit wireless communication interference testing device of claim 1, wherein the controller obtaining control information for controlling the power regulator based on the regulation parameter comprises: acquiring a channel attenuation signal based on an environment type, a horizontal distance and a vertical height, and adjusting the channel attenuation signal based on the environment type and an incoming wave direction; the controller outputs the adjusted channel attenuation signal to the power regulator.
7. The rail transit wireless communication interference testing device of claim 1, wherein antennas in the antenna units are configured based on different adjacent frequency and different radiation angles.
8. A rail transit wireless communication interference test method is characterized by comprising the following steps:
configuring adjustment parameters;
generating control information for controlling the radio frequency generator and the power regulator based on the adjusting parameter;
the radio frequency generator generates an LTE adjacent frequency broadband signal based on the control information of the controller;
the power regulator regulates the LTE adjacent frequency broadband signal based on the control information;
and transmitting the adjusted LTE adjacent frequency broadband signal.
9. The rail transit wireless communication interference testing method according to claim 8, wherein the adjusting parameters comprise a plurality of combinations of environment type, interference source type, bandwidth, horizontal distance, vertical height, incoming wave direction and power; the environment types are tunnel and ground; the type of the interference source is the name of an adjacent channel interference system; the horizontal distance is the horizontal distance between the on-site train vehicle-mounted terminal and the interference source; the vertical height is the vertical height between the on-site train-mounted terminal and the interference source; the incoming wave direction is the included angle between the interference source antenna and the main direction of the vehicle-mounted terminal antenna at the moment of maximum interference.
10. The rail transit wireless communication interference testing method according to claim 8, wherein the generating control information for controlling a radio frequency generator based on the adjustment parameter comprises: acquiring radio frequency, a signal modulation mode and bandwidth in a table look-up mode; generating control information for controlling the power regulator based on the regulation parameter includes: and acquiring a channel attenuation signal based on the environment type, the horizontal distance and the vertical height, and adjusting the channel attenuation signal based on the environment type and the incoming wave direction.
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| WO2015131654A1 (en) * | 2014-09-16 | 2015-09-11 | 中兴通讯股份有限公司 | Method and system for locating interference to base station |
| CN206195789U (en) * | 2016-10-26 | 2017-05-24 | 北京万集科技股份有限公司 | Testing arrangement of ETC equipment |
| CN107809288A (en) * | 2017-10-30 | 2018-03-16 | 深圳无线电检测技术研究院 | A kind of air interference method of testing and system |
| CN108990015A (en) * | 2018-07-31 | 2018-12-11 | 武汉虹信通信技术有限责任公司 | Business scheduling method and device under a kind of rail traffic redundant communication system |
| CN109861771A (en) * | 2019-03-22 | 2019-06-07 | 上海控创信息技术股份有限公司 | Rail traffic LTE wireless communication system adjacent-channel interference power device and test method |
| CN113038519A (en) * | 2021-03-15 | 2021-06-25 | 上海应用技术大学 | Rail transit vehicle-ground wireless communication intelligent monitoring system and decision tree algorithm |
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