CN114070427B - Terminal test system based on reverberation room environment - Google Patents
Terminal test system based on reverberation room environment Download PDFInfo
- Publication number
- CN114070427B CN114070427B CN202111150634.1A CN202111150634A CN114070427B CN 114070427 B CN114070427 B CN 114070427B CN 202111150634 A CN202111150634 A CN 202111150634A CN 114070427 B CN114070427 B CN 114070427B
- Authority
- CN
- China
- Prior art keywords
- test
- turntable
- antenna
- main control
- network analyzer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 252
- 230000005855 radiation Effects 0.000 claims abstract description 14
- 230000035945 sensitivity Effects 0.000 claims abstract description 12
- 230000010287 polarization Effects 0.000 claims abstract description 5
- 238000004364 calculation method Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 230000011664 signaling Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 230000001276 controlling effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000005672 electromagnetic field Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/101—Monitoring; Testing of transmitters for measurement of specific parameters of the transmitter or components thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/101—Monitoring; Testing of transmitters for measurement of specific parameters of the transmitter or components thereof
- H04B17/102—Power radiated at antenna
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
A terminal test system based on a reverberation room environment comprises a reverberation room, a vector network analyzer, a comprehensive tester, a radio frequency switch control box and a turntable control box, wherein a signal output end of the turntable control box is connected with a turntable and a stirrer to control actions of a plurality of turntables and the stirrer, the reverberation room is a shielding room, a plurality of turntables are arranged in the reverberation room, a plurality of stirrers are arranged in the reverberation room, and the boundary conditions of the reverberation room are changed through rotation of the stirrers, so that an electromagnetic environment with uniform random polarization is formed in the reverberation room. The invention takes the upper computer as the control and test core of the test system, and the user sends out control protocol instructions by operating the upper computer software of the test system to control corresponding instrument and equipment, so as to test parameters such as PTF space loss, TRP total radiation power, TIS total omnidirectional sensitivity, throughput, antenna efficiency and the like, stably operate and rapidly collect data, and verify the quality of signal performance under various modes of the reverberation room terminal equipment.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a terminal test system based on a reverberation room environment.
Background
At present, the development of the communication test industry is rapid, the requirements of the terminal test of a reverberation room are improved, the reverberation room has related applications in the acoustic field and the electromagnetic field, the communication industry refers to the reverberation room used in the electromagnetic field, namely an electric wave reverberation room, the electric wave reverberation room is a shielding cavity which is large in size and is provided with a high-conductivity reflection wall surface, one or more mechanical stirrers or tuners are usually arranged in the cavity, the boundary conditions of the cavity are changed through rotation of the stirrers, and then an electromagnetic environment with uniform statistics, isotropy and random polarization is formed in the cavity. The better industry currently does for reverberant room terminal testing is the bluest RTS65, which is applied by various large terminal manufacturers in reverberant room terminal testing.
However, the existing reverberation room terminal testing mechanism can only realize execution of a single task, is only used for testing terminals, requires additional software for testing the loss of a testing space, and has low testing efficiency.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a terminal test system which can stably run and rapidly collect data to test TRP total radiation power, TIS total omnidirectional sensitivity, throughput and antenna efficiency of a reverberation chamber.
The invention solves the technical problems by adopting the following technical scheme:
the utility model provides a terminal test system based on reverberation room environment, includes the reverberation room, the reverberation room is a shielding cavity, there are a plurality of test antenna and a plurality of revolving stage in the reverberation room inside, be equipped with a plurality of agitator in the reverberation room for change the boundary condition of reverberation room cavity through the rotation of agitator, make the electromagnetic environment of even, isotropy and random polarization form in the cavity of reverberation room, still include:
the vector network analyzer is a signal receiving and transmitting device, is connected with the main control computer, generates pulse radio frequency signals with specified parameters under the control of the main control computer, transmits the pulse radio frequency signals through the reference antenna, receives the pulse radio frequency signals through the test antenna, and transmits the pulse radio frequency signals to a receiving port of the vector network analyzer;
the comprehensive tester is signal receiving and transmitting equipment and is connected with the main control computer and the test terminal, the test terminal is arranged in the reverberation room, the comprehensive tester transmits signals to the test terminal through a link antenna, and the test terminal transmits the signals back to a receiving port of the comprehensive tester through the test antenna;
the radio frequency switch control box is used for converting one input channel into four output channels, and different channel switches are controlled to select different output channels;
the signal output end of the turntable control box is connected with the turntable and the stirrer and is used for controlling actions of a plurality of the turntables and the stirrer.
Preferably, the turntable control box, the vector network analyzer and the radio frequency switch control box form a space loss calibration system, and the space loss calibration system performs loss test of the test terminal according to a loss calibration strategy, wherein the loss calibration strategy is as follows:
s1, connecting a turntable control box, a vector network analyzer and a radio frequency switch control box with a main control computer in a data manner;
s2, self-calibrating the vector network analyzer: setting a start frequency point, an end frequency point, a scanning point number and a scanning time corresponding to the test, calibrating the state of the vector network analyzer by using a calibration mechanism, and manufacturing a corresponding state file;
s3, recording the names of the produced state files in a file path and the current state files of the vector network analyzer, and inputting the corresponding state files in a main control computer for calling when loss calibration is carried out;
s4, selecting a turntable to be controlled, setting a control mode and a motion configuration of the turntable, configuring efficiency file data of a reference antenna, storing the efficiency file data, and starting calibration;
and S5, after calibration is completed, completing configuration of all boundary conditions corresponding to the turntable, and generating corresponding trace acquisition data files of the vector network analyzer which stores all boundary conditions on the main control computer.
Preferably, the turntable control box, the vector network analyzer and the turntable form an antenna efficiency testing system, the antenna efficiency testing system tests the transmission efficiency of the antenna according to an efficiency testing strategy, and the efficiency testing strategy is as follows:
s1, connecting a turntable, a turntable controller and a vector network analyzer with a main control computer in a data manner;
s2, configuring test parameters of a reference antenna, wherein the reference antenna is installed in a reverberation room, and a test task is established on a main control computer;
s3, testing and reading data of a vector network analyzer, and calculating S parameters of a reference antenna;
s4, configuring test parameters of the test antenna, and establishing a test task on the main control computer;
s5, testing and reading data of the vector network analyzer, and calculating S parameters of the test antenna;
and S6, calculating the antenna efficiency according to the S parameters of the reference antenna and the test antenna, and storing.
Preferably, the test terminal supports LTE 4G network communication.
Preferably, the comprehensive tester and the main control computer test the total radiation power according to a power radiation strategy, wherein the power radiation strategy is as follows:
s1, configuring test parameters on a main control computer, selecting test types, configuring test times of each boundary condition, setting test frame numbers of a comprehensive tester, and presenting test data for reading after the comprehensive tester reads the specified frame numbers;
s2, configuring a testing system and bandwidth of the comprehensive tester, compensating attenuation values and power values, and storing the values;
s3, starting a test task, establishing signaling connection between the comprehensive tester and the mobile phone, controlling the turntable by the main control computer to move to a corresponding configured initial position, then reading and storing test data on the comprehensive tester, namely a total radiation power value, outputting data processed by a corresponding algorithm by a log on the main control computer, displaying the data in a form of a graph curve, updating the progress of a progress bar corresponding to a test task table, controlling the turntable to move to the next position according to configuration after the data processing is completed, and repeating a data acquisition process until the test of all positions is completed.
Preferably, the comprehensive tester and the main control computer perform a total omnidirectional sensitivity test according to a sensitivity test strategy, wherein the sensitivity test strategy is as follows:
s1, configuring an error rate, calculating an optimal power value, setting an initial value of power calculation, and setting a test frame number on a comprehensive tester;
s2, reading the error rate on the comprehensive tester, if the error rate is too large, reducing the power, otherwise, increasing the power, finally adjusting to be closest to the preset error rate, and reading the current corresponding BW power value for algorithm calculation.
The invention has the advantages and positive effects that:
the invention takes the upper computer as the control and test core of the test system, the user sends out control protocol instructions by operating the upper computer software of the test system to control corresponding instrument and equipment, so as to test the parameters such as PTF space loss, TRP total radiation power, TIS total omnidirectional sensitivity, throughput, antenna efficiency and the like, stably operate and rapidly collect data, verify the quality of signal performance under various modes of the reverberation room terminal equipment, do not need to manually set parameters on the instrument, and adopt a multi-task multi-channel test method, thereby facilitating test use and improving test efficiency.
Drawings
FIG. 1 is a schematic diagram of the system software composition of the present invention;
FIG. 2 is a schematic diagram of a device management architecture of the present invention;
FIG. 3 is a schematic diagram of the composition of the space loss calibration system of the present invention;
FIG. 4 is a test flow chart of the space loss calibration system of the present invention;
FIG. 5 is a schematic diagram of a test flow of the terminal test system of the present invention;
fig. 6 is a flow chart of TRP test of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Embodiments of the invention are described in further detail below with reference to the attached drawing figures:
as shown in fig. 1 and2, the terminal testing system based on a reverberant room environment according to the present invention includes a reverberant room, the reverberant room is a shielding room, a plurality of test antennas and a plurality of turntables are arranged in the reverberant room, a plurality of stirrers are arranged in the reverberant room, the boundary conditions of the reverberant room are changed by rotation of the stirrers, so that an electromagnetic environment with uniform, isotropic and random polarization is formed in the reverberant room, and the terminal testing system further includes:
the vector network analyzer is a signal receiving and transmitting device, is connected with the main control computer, generates pulse radio frequency signals with specified parameters through the control of the main control computer, transmits the pulse radio frequency signals through the reference antenna, receives the pulse radio frequency signals through the test antenna, and transmits the pulse radio frequency signals to a receiving port of the vector network analyzer;
the comprehensive tester is a signal receiving and transmitting device, the signal receiving and transmitting device is connected with the main control computer and the test terminal, the test terminal is arranged in the reverberation room, the test terminal supports LTE 4G network communication, the comprehensive tester transmits signals to the test terminal through the link antenna, and the test terminal transmits the signals back to a receiving port of the comprehensive tester through the test antenna;
the radio frequency switch control box is used for converting one input channel into four output channels, and different output channels are selected by controlling different channel switches;
the signal output end of the turntable control box is connected with the turntable and the stirrer and is used for controlling the actions of a plurality of turntables and the stirrer.
The terminal test system may perform the following tests:
as shown in fig. 3 and fig. 4, the space loss calibration system performs PTF space loss test of the test terminal according to a loss calibration policy, mainly to control the vector network analyzer to transmit and receive pulse radio frequency signals, collect trace data of all frequency points corresponding to each boundary condition in the vector network analyzer, the PTF space loss is mainly the signal transmitted from the reference antenna in the whole reverberation room environment, and the signal transmitted from the reference antenna passes through the reverberation room turntable, the stirrer and the layer-by-layer stirring of the inner wall to reach the test antenna, so that the signal loss in the whole process is reduced. And acquiring trace data of the vector network analyzer, and calculating by using an algorithm to obtain corresponding space loss data. Theoretically, the space loss calibration is only needed once at the beginning, and then the radio frequency cable, the reference antenna, the test antenna and the test terminal TRP, TIS and throughput can be directly called to calculate the PTF space loss for compensation under the condition that the whole test environment is unchanged, and the loss calibration strategy is as follows:
s1, connecting a turntable control box, a vector network analyzer and a radio frequency switch control box with a main control computer in a data manner;
s2, self-calibrating the vector network analyzer: setting a start frequency point, an end frequency point, a scanning point number and a scanning time corresponding to the test, calibrating the state of the vector network analyzer by using a calibration mechanism, and manufacturing a corresponding state file;
s3, recording the names of the produced state files in a file path and the current state files of the vector network analyzer, and inputting the corresponding state files in a main control computer for calling when loss calibration is carried out;
s4, selecting a turntable to be controlled, setting a control mode and a motion configuration of the turntable, configuring efficiency file data of a reference antenna, storing the efficiency file data, and starting calibration;
and S5, after calibration is completed, completing configuration of all boundary conditions corresponding to the turntable, and generating corresponding trace acquisition data files of the vector network analyzer which stores all boundary conditions on the main control computer.
The calibration mode is divided into the following four modes:
normal mode, 6 traces are created: s11 real part, S11 imaginary part, S22 real part, S22 imaginary part, S21 real part and S21 imaginary part, and reading trace data corresponding to the 6 traces, and storing the acquired trace data under a folder directory appointed by a main control computer; in the calibration process, software calculates the space loss corresponding to each boundary condition in real time and displays the space loss in the form of a graph curve.
Medium normal mode, creating 3 traces: s11 logarithm, S22 logarithm and S21 logarithm, wherein the 3 trace lines are only used for facilitating a user to check the current calibration state, and all trace line data are stored under a folder directory appointed by the vector network analyzer in an S2p file format; in the calibration process, only the corresponding progress bar is displayed on the software interface, and the graph curve is not displayed.
And in the Fast common mode, the s2p file stored in the Medium mode test is stored in a local folder from the vector network analyzer, and the corresponding PTF value can be calculated and displayed in a graph form.
WideBand PTF common mode, 1 trace is created: s21 logarithm, the trace is only used for facilitating a user to check the current calibration state, a corresponding state file (2 traces are provided with S21 real part and S21 imaginary part), trace data corresponding to the 3 traces are read, and the acquired trace data are stored in a folder directory appointed by a main control computer; in the calibration process, software calculates the space loss corresponding to each boundary condition in real time and displays the space loss in the form of a graph curve.
The antenna efficiency test system tests the transmission efficiency of the antenna according to an efficiency test strategy, wherein the efficiency test strategy is as follows:
s1, connecting a turntable, a turntable controller and a vector network analyzer with a main control computer in a data manner;
s2, configuring test parameters of a reference antenna, wherein the reference antenna is installed in a reverberation room, and a test task is established on a main control computer;
s3, testing and reading data of a vector network analyzer, and calculating S parameters of a reference antenna;
s4, configuring test parameters of the test antenna, and establishing a test task on the main control computer;
s5, testing and reading data of the vector network analyzer, and calculating S parameters of the test antenna;
and S6, calculating the antenna efficiency according to the S parameters of the reference antenna and the test antenna, and storing.
Namely: the test of measuring antenna efficiency is to connect the required vector network analyzer, and the equipment and instrument can start the test after normal and successful connection. Selecting a corresponding test type and selecting Efficiency;
during the first test, a reference antenna is firstly installed in a reverberation room environment, the type of the currently connected antenna is selected as the reference antenna, and corresponding parameters are configured: vector network analyzer configuration, turntable configuration, switch box antenna efficiency configuration, loading of vector network analyzer state files, test and acquisition of vector network analyzer trace data under all boundary conditions, and calculation of S parameters of a reference antenna through an algorithm.
After the S parameter file of the reference antenna is obtained, installing a corresponding test antenna to be measured in a reverberation room environment, selecting the type of the currently connected antenna as the test antenna, configuring corresponding parameters, testing and reading trace data acquired by a vector network analyzer in the current state in the vector network analyzer, and calculating the S parameter of the test antenna and the efficiency value of the corresponding test antenna through an algorithm.
As shown in fig. 6, which is a flow chart of the test of TRP total radiated power, the power radiation strategy used is:
s1, configuring test parameters on a main control computer, selecting test types, configuring the test times of each boundary condition, wherein the more the times are, the more accurate the relative test results are, but the longer the test time is correspondingly, setting the test frame number of a comprehensive tester, and presenting test data for reading after the comprehensive tester finishes reading the designated frame number;
s2, configuring a comprehensive tester: test format Standard was selected: currently, LTE, GSM, WCDMA is supported, wherein LTE corresponds to 4G, GSM corresponds to 3G, WCDMA corresponds to 2G, corresponding modes are selected, and the terminal needs to configure corresponding modes, otherwise, normal connection cannot be performed; selecting a corresponding test Band, wherein different test modes correspond to different test bands, and the test Band corresponding to the test mode GSM is selected: GSM 850, P-GSM 900, E-GSM 900, R-GSM 900, GSM 1800 (DCS), GSM 1900 (PCS); test Band corresponding to test system WCDMA: WCDMA Band 1-WCDMA Band13; test Band corresponding to test system LTE: FDD Band 1-FDD Band22, TDD Band 33-TDD Band40; configuring bandwidth, outputting and inputting a com port, compensating attenuation values and power values;
s3, starting a test task, and establishing signaling connection between the comprehensive tester and the mobile phone, wherein the display state of the state cell corresponding to the test task is switched into: connecting means that the connection between the current testing terminal and the comprehensive tester is successful, the testing state is switched to running, and the test is started to be executed; connection failure, popup window error prompt, and ending test, after the terminal normally establishes signaling connection, starting test: the main control computer controls the turntable to move to a corresponding configured starting position, then reads and stores test data on the comprehensive tester, namely a total radiation power value, the main control computer outputs data processed by a corresponding algorithm from a log, the data is displayed in a form of a graph curve, meanwhile, the progress bar progress corresponding to the test task table is updated, after the data processing is finished, the control turntable moves to the next position according to configuration, the data flow is repeatedly collected until the test of all positions is finished, the test is finished, a test result is updated to a test result column corresponding to the test task table, the test state corresponding to the test task table is updated to Finish, meanwhile, the corresponding test data is generated and stored in a local computer, a storage path can be configured through a configuration interface, the default is a software installation position, and the default name of the test result data file is: TRP-test channel csv.
The sensitivity test strategy used for the test of TIS total omni-directional sensitivity is:
selecting a corresponding test type and selecting a TIS; configuring error rate for calculating optimal power value; terminal initial power value: setting an initial value of power calculation, wherein the power is required to be set properly, so that the terminal can be normally and stably connected, the setting is overlarge, the overall calculation time is long, the setting is overlarge, and the terminal is easy to disconnect; the number of test frames is set in a parameter in the comprehensive tester, the comprehensive tester can present test data for reading after the designated number of frames is read, the more the number of frames is, the more accurate the relative test result is, but the longer the test time is spent.
The TIS test overall operational flow is similar to the TRP test. However, the TIS test sets power and reads the error rate on the comprehensive tester, if the error rate is too large, the power is reduced, and if the error rate is too small, the power is increased; finally, the BW power value is adjusted to be closest to the preset error rate, the current corresponding BW power value is read and used for algorithm calculation, and because each boundary condition needs to be subjected to a process of searching the optimal power value once, the whole test needs to take a long time.
Throughput test: selecting a corresponding test type and selecting a Throughput; configuring throughput limit; configuring an initial power value of a terminal; configuring test-related configuration of the comprehensive tester equipment;
the whole operation flow of the throughput test is similar to the TIS test, but is different in data processing, the throughput test sets power and reads the throughput on the comprehensive tester, if the throughput is too large, the power is reduced, and if the throughput is too small, the power is increased; finally, the throughput is adjusted to be closest to the preset throughput, the current corresponding throughput is read and used for algorithm calculation, and because each boundary condition needs to be subjected to a process of searching the optimal power value once, the whole test needs to take a long time.
Fig. 5 is a test flow chart of the terminal test system, in which the equipment needed for terminal test is connected first, and the equipment can be started to perform corresponding test after being connected normally and successfully. After the equipment management module normally connects the needed equipment through the upper computer software, the test parameter configuration is started.
Clicking a test task adding button, popping up a configuration interface, configuring test related parameter settings on the configuration interface, confirming and storing the configuration, and adding a row of test task tables in a main interface task table, wherein the test task tables are divided into 10 columns: test serial number, test task number, test type, test system, test band, test channel frequency point, power, current test state, progress bar, test result.
Support multitasking: adding a plurality of test tasks, and displaying corresponding multiple rows of test tasks on a main interface; each row represents 1 test task, a multitask test is configured, and after the first task test is completed, software automatically executes the next task to start the test
Support multi-channel execution: adding a plurality of channels, wherein a plurality of options corresponding to the drop-down frame can be seen in a test channel column corresponding to the test task table, each option corresponds to 1 channel, a multi-channel test is configured, after the first channel test is completed, software automatically executes the next channel to start the test, the multi-channel test is prioritized over the multi-task test, namely, after the multi-channel test of 1 task is simultaneously configured, the multi-channel test of the next task is executed.
Clicking a start test button to start testing, and updating the button state; clicking a pause button to pause the test; clicking the stop button, ending the stop of the current test.
The invention takes the upper computer as the control and test core of the test system, and the user sends out control protocol instructions by operating the upper computer software of the test system to control corresponding instrument and equipment, so as to test parameters such as PTF space loss, TRP total radiation power, TIS total omnidirectional sensitivity, throughput, antenna efficiency and the like, stably operate and rapidly collect data, and verify the quality of signal performance under various modes of the reverberation room terminal equipment.
It should be emphasized that the examples described herein are illustrative rather than limiting, and therefore the invention is not limited to the examples described in the detailed description, but rather falls within the scope of the invention as defined by other embodiments derived from the technical solutions of the invention by those skilled in the art.
Claims (5)
1. The utility model provides a terminal test system based on reverberation room environment, includes the reverberation room, the reverberation room is a shielding cavity, there are a plurality of test antenna and a plurality of revolving stage in the reverberation room inside, be equipped with a plurality of agitator in the reverberation room for change the boundary condition of the indoor cavity of reverberation through the rotation of agitator, make the indoor electromagnetic environment that forms even, isotropy and random polarization of reverberation, its characterized in that: further comprises:
the vector network analyzer is a signal receiving and transmitting device, is connected with the main control computer, generates pulse radio frequency signals with specified parameters under the control of the main control computer, transmits the pulse radio frequency signals through the reference antenna, receives the pulse radio frequency signals through the test antenna, and transmits the pulse radio frequency signals to a receiving port of the vector network analyzer;
the comprehensive tester is signal receiving and transmitting equipment and is connected with the main control computer and the test terminal, the test terminal is arranged in the reverberation room, the comprehensive tester transmits signals to the test terminal through a link antenna, and the test terminal transmits the signals back to a receiving port of the comprehensive tester through the test antenna;
the radio frequency switch control box is used for converting one input channel into four output channels, and different channel switches are controlled to select different output channels;
the signal output end of the turntable control box is connected with the turntable and the stirrer and is used for controlling the actions of a plurality of turntables and the stirrer;
the turntable control box, the vector network analyzer and the radio frequency switch control box form a space loss calibration system, the space loss calibration system tests the loss of the test terminal according to a loss calibration strategy, and the loss calibration strategy is as follows:
s1, connecting a turntable control box, a vector network analyzer and a radio frequency switch control box with a main control computer in a data manner;
s2, self-calibrating the vector network analyzer: setting a start frequency point, an end frequency point, a scanning point number and a scanning time corresponding to the test, calibrating the state of the vector network analyzer by using a calibration mechanism, and manufacturing a corresponding state file;
s3, recording the names of the produced state files in a file path and the current state files of the vector network analyzer, and inputting the corresponding state files in a main control computer for calling when loss calibration is carried out;
s4, selecting a turntable to be controlled, setting a control mode and a motion configuration of the turntable, configuring efficiency file data of a reference antenna, storing the efficiency file data, and starting calibration;
and S5, after calibration is completed, completing configuration of all boundary conditions corresponding to the turntable, and generating corresponding trace acquisition data files of the vector network analyzer which stores all boundary conditions on the main control computer.
2. A reverberant room environment based end test system according to claim 1, wherein: the antenna efficiency testing system is formed by the turntable control box, the vector network analyzer and the turntable, and is used for testing the transmission efficiency of the antenna according to an efficiency testing strategy, wherein the efficiency testing strategy is as follows:
s1, connecting a turntable, a turntable controller and a vector network analyzer with a main control computer in a data manner;
s2, configuring test parameters of a reference antenna, wherein the reference antenna is installed in a reverberation room, and a test task is established on a main control computer;
s3, testing and reading data of a vector network analyzer, and calculating S parameters of a reference antenna;
s4, configuring test parameters of the test antenna, and establishing a test task on the main control computer;
s5, testing and reading data of the vector network analyzer, and calculating S parameters of the test antenna;
and S6, calculating the antenna efficiency according to the S parameters of the reference antenna and the test antenna, and storing.
3. A reverberant room environment based end test system according to claim 1, wherein: the test terminal supports LTE 4G network communication.
4. A reverberant room environment based end test system according to claim 1, wherein: the comprehensive tester and the main control computer test the total radiation power according to a power radiation strategy, wherein the power radiation strategy is as follows:
s1, configuring test parameters on a main control computer, selecting test types, configuring test times of each boundary condition, setting test frame numbers of a comprehensive tester, and presenting test data for reading after the comprehensive tester reads the specified frame numbers;
s2, configuring a testing system and bandwidth of the comprehensive tester, compensating attenuation values and power values, and storing the values;
s3, starting a test task, establishing signaling connection between the comprehensive tester and the mobile phone, controlling the turntable by the main control computer to move to a corresponding configured initial position, then reading and storing test data on the comprehensive tester, namely a total radiation power value, outputting data processed by a corresponding algorithm by a log on the main control computer, displaying the data in a form of a graph curve, updating the progress of a progress bar corresponding to a test task table, controlling the turntable to move to the next position according to configuration after the data processing is completed, and repeating a data acquisition process until the test of all positions is completed.
5. A reverberant room environment based end test system according to claim 1, wherein: the comprehensive tester and the main control computer test the total omnidirectional sensitivity according to a sensitivity test strategy, wherein the sensitivity test strategy is as follows:
s1, configuring an error rate, calculating an optimal power value, setting an initial value of power calculation, and setting a test frame number on a comprehensive tester;
s2, reading the error rate on the comprehensive tester, if the error rate is too large, reducing the power, otherwise, increasing the power, finally adjusting to be closest to the preset error rate, and reading the current corresponding BW power value for algorithm calculation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111150634.1A CN114070427B (en) | 2021-09-29 | 2021-09-29 | Terminal test system based on reverberation room environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111150634.1A CN114070427B (en) | 2021-09-29 | 2021-09-29 | Terminal test system based on reverberation room environment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114070427A CN114070427A (en) | 2022-02-18 |
| CN114070427B true CN114070427B (en) | 2024-04-05 |
Family
ID=80233849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111150634.1A Active CN114070427B (en) | 2021-09-29 | 2021-09-29 | Terminal test system based on reverberation room environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114070427B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118191485A (en) * | 2024-05-15 | 2024-06-14 | 中汽研新能源汽车检验中心(天津)有限公司 | Method, system, medium and product for verifying signal transmission characteristics of electromagnetic environment of reverberation room |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101605350A (en) * | 2009-07-01 | 2009-12-16 | 工业和信息化部通信计量中心 | Based on multiple wireless access technology space Performance Test System and method of testing thereof |
| CN102590795A (en) * | 2012-02-29 | 2012-07-18 | 中国电子科技集团公司第二十二研究所 | Microwave scattering property test system based on vector network analyzer |
| CN102868464A (en) * | 2012-09-14 | 2013-01-09 | 青岛海信移动通信技术股份有限公司 | Consistency testing system and method of communication terminals |
| CN112881825A (en) * | 2021-01-11 | 2021-06-01 | 西安交通大学 | Reverberation room test system with temperature control system and test method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102830298B (en) * | 2012-07-27 | 2017-04-12 | 中兴通讯股份有限公司 | Method and device for testing radio frequency index and wireless index of active antenna system |
-
2021
- 2021-09-29 CN CN202111150634.1A patent/CN114070427B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101605350A (en) * | 2009-07-01 | 2009-12-16 | 工业和信息化部通信计量中心 | Based on multiple wireless access technology space Performance Test System and method of testing thereof |
| CN102590795A (en) * | 2012-02-29 | 2012-07-18 | 中国电子科技集团公司第二十二研究所 | Microwave scattering property test system based on vector network analyzer |
| CN102868464A (en) * | 2012-09-14 | 2013-01-09 | 青岛海信移动通信技术股份有限公司 | Consistency testing system and method of communication terminals |
| CN112881825A (en) * | 2021-01-11 | 2021-06-01 | 西安交通大学 | Reverberation room test system with temperature control system and test method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114070427A (en) | 2022-02-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20210314075A1 (en) | Method and system for testing wireless performance of wireless terminal | |
| CN103036623B (en) | Mobile terminal power control test calibrating method and mobile terminal | |
| CN114070427B (en) | Terminal test system based on reverberation room environment | |
| US20040207422A1 (en) | Aligning and testing system for communication device manufacturing | |
| US11182277B1 (en) | High-speed radiated spurious emission automated test system and method thereof | |
| KR102441958B1 (en) | Electronic device and method for test and calibration of rf signal transmission performance | |
| CN110535539B (en) | Power compensation method, device, equipment and medium for radio frequency module | |
| CN111337758B (en) | Antenna radiation efficiency measuring method based on reverberation chamber | |
| CN115623523B (en) | Multifunctional test method and system for wireless performance of WiFi equipment | |
| CN109342834B (en) | Testing device for terminal antenna | |
| JP7227203B2 (en) | Mobile terminal test equipment and mobile terminal test method | |
| CN106533583A (en) | Method and device for rapidly testing 1dB compression point of power amplifier | |
| JP2022121174A (en) | Mobile terminal test device and mobile terminal test method | |
| CN114039676A (en) | Radio frequency tester and calibration method thereof | |
| CN115112977A (en) | Multi-channel frequency conversion module calibration and measurement integrated automatic test platform and test method | |
| US11044027B2 (en) | Wireless transmission performance test system and method thereof | |
| CN116668323A (en) | Automatic test system and method based on ultrashort wave communication equipment | |
| CN113422659B (en) | Quick measurement device and method for spurious suppression of communication comprehensive test equipment | |
| CN114050878A (en) | Method and device for automatically testing stray suppression of multi-channel radio frequency system | |
| CN115047257A (en) | Automatic antenna measuring system based on spherical surface near field measurement | |
| US9065559B2 (en) | System for testing and calibrating core engine radio frequency (RF) circuit card assemblies | |
| US8405547B2 (en) | Self-provisioning antenna system and method | |
| CN111740788B (en) | Antenna test method and related equipment | |
| CN218514385U (en) | Cellular wireless terminal coupling test system | |
| CN110542889A (en) | Parallel multi-measurement calibration system and calibration method for vector network analyzer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |