CN102164014B - Radio frequency index testing method and system - Google Patents
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Abstract
The invention discloses a radio frequency index testing method and a radio frequency index testing system. The method comprises the following steps of: setting data acquisition parameters of a radio frequency index, and enabling a predefined measurement function corresponding to the radio frequency index; acquiring the data of the radio frequency index according to the set data acquisition parameters of the radio frequency index; processing the acquired data of the radio frequency index by using the measurement function; and outputting the processed data of the radio frequency index. By the technical scheme provided by the invention, the radio frequency index testing efficiency and measurement accuracy can be improved.
Description
Technical field
The present invention relates to the network communications technology, particularly a kind of radio-frequency indicator testing method and system.
Background technology
In TDD-LTE system, from single-board testing to integration testing, need the index of test generally to have: the signal to noise ratio (SNR of upward signal, Signal to Noise Ratio), Spurious Free Dynamic Range (SFDR, Spurious Free Dynamic range) full scale signal amplitude, tone signal power and DDC filter characteristic etc.; The adjacent channel leakage of downstream signal is than (ACLR, Adjacent Channel Leakage Ratio,), papr (PAPR, Peak to Average Power Ratio), standing-wave ratio (SWR, Voltage Standing Wave Ratio), the power output etc. of eating dishes without rice or wine; In addition for orientation problem need to gather upward signal and the downstream signal in certain hour section.
Fig. 1 is the system configuration schematic diagram of radio-frequency (RF) index test in prior art.As shown in Figure 1, during testing uplink index, need to use the instruments such as logic analyzer to gather the data of ADC or DDC output, re-use data processing software analysis and obtain index of correlation; During the lower row index of test, the data acquisition of digital signal is used to logic analyzer, after gathering, use PC software to carry out reprocessing, other indexs can only be used spectrum analyzer to measure.
In inside, RRU unit, FPGA completes up-downgoing data processing function, and transmission channel completes transmitting path analog, and receive path completes receiving path analog, and filter module output signal is to antenna element.During measurement, be generally to complete analog signal test at analog signal output mouth, or in the inner digital signal that gathers of FPGA, carry out processing after correlation.
Method of testing of the prior art need to be carried out repeatedly data acquisition and analyzing and processing operation when test receives index, and the time of operating instrument and software has taken most of testing time.Especially extract data and production test stage doing temperature experiment, this method is very labor intensive and time.
In the prior art visible, the measuring instrument that need to use the test of the radio-frequency (RF) index in LTE system is many, and cost is high; And after having measured, need the reprocessing complexity that data are carried out, and expending a large amount of manpowers and time, efficiency is lower.
Summary of the invention
The invention provides a kind of radio-frequency indicator testing method, the method can improve the efficiency of testing radio frequency index.
For achieving the above object, the method is achieved in that the data acquisition parameters that radio-frequency (RF) index is set, and starts measurement functions corresponding to predefined this radio-frequency (RF) index; According to the data acquisition parameters of set radio-frequency (RF) index, gather the data of radio-frequency (RF) index; By described measurement functions, the data of the radio-frequency (RF) index collecting are processed; Export the data of radio-frequency (RF) index after treatment.
The present invention also provides a kind of radio frequency index testing system, and this system can improve the efficiency of testing radio frequency index.
A kind of radio frequency index testing system, this system comprises: FPGA module, processor module; Wherein,
Processor module, for according to the data acquisition parameters of set radio-frequency (RF) index, sends data acquisition command to FPGA module; For receiving the data of the radio-frequency (RF) index that FPGA module collects, call measurement functions corresponding to predefined this radio-frequency (RF) index and process;
FPGA module, the data acquisition command of the radio-frequency (RF) index sending for receiving processor module, gathers the data of corresponding radio-frequency (RF) index, sends to processor module to process the data of the radio-frequency (RF) index collecting.
From the above, technical scheme of the present invention, gathers the data of different radio-frequency (RF) index, by the predefined measurement functions corresponding with this radio-frequency (RF) index, calculates, and the result of calculation of output is exactly required radio-frequency (RF) index.Technical scheme of the present invention is measured convenient, saves human cost, and can improve efficiency and the certainty of measurement of testing radio frequency index.
Accompanying drawing explanation
Fig. 1 is the system configuration schematic diagram of radio-frequency (RF) index test in prior art;
Fig. 2 is the flow chart of a kind of radio-frequency indicator testing method in the present invention;
Fig. 3 is the structural representation of a kind of radio frequency index testing system in the present invention;
Fig. 4 is the flow chart of the measurement SNR index in one embodiment of the invention.
Embodiment
The invention discloses a kind of radio-frequency indicator testing method and system, the bright technical scheme of we can improve efficiency and the certainty of measurement of testing radio frequency index.In order to make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the drawings and specific embodiments, describe the present invention.
Fig. 2 is the flow chart of a kind of radio-frequency indicator testing method in the present invention.As shown in Figure 2,
Step 201, arranges the data acquisition parameters of radio-frequency (RF) index, starts measurement functions corresponding to predefined this radio-frequency (RF) index;
Step 202, according to the data of the data acquisition parameters collection radio-frequency (RF) index of set radio-frequency (RF) index;
Step 203, processes the data of the radio-frequency (RF) index collecting by described measurement functions;
Step 204, exports the data of radio-frequency (RF) index after treatment.
In step 201, the data acquisition parameters that arrange comprises: the data type of the radio-frequency (RF) index that gather is set, as adc data or DAC data; Gather the acquisition time of the data of this radio-frequency (RF) index, as gathered a secondary data every 10ms; Gather the sample rate of the data of this radio-frequency (RF) index, as 184.32Msps.
While gathering in the present invention the data of radio-frequency (RF) index, the mode that can adopt automatic cycle to gather, the mode that also can adopt manual triggers measurement to gather, or other the data acquisition modes of setting according to actual conditions.
In an embodiment of the present invention, the data acquisition parameters of the radio-frequency (RF) index of the above is pre-set, in the time need to using the data acquisition parameters of this radio-frequency (RF) index, can directly call this parameter, reduce because measure different radio-frequency (RF) index, and reset time of the data acquisition parameters of described radio-frequency (RF) index, improve the efficiency of test.
In step 202, the analog signal of the radio-frequency (RF) index that detect is converted to after digital signal, gather this digital signal.According to the data acquisition parameters of set radio-frequency (RF) index, gather the data of radio-frequency (RF) index.In TDD system, need to testing the radio-frequency (RF) index with time point, the data acquisition of the radio-frequency (RF) index in the present invention, can gather the data of a random time point within Frame, and the acquisition time that gathers the data of this radio-frequency (RF) index produces by the timing of frame signal; In addition, the present invention can also gather the data of any carrier wave, is applicable to the system of single carrier and multicarrier.
In step 203, the data of the described radio-frequency (RF) index collecting are processed by the measurement functions corresponding with this radio-frequency (RF) index.The present invention also provides embodiment first, and the radio-frequency (RF) index in this embodiment is SNR, and step 203 is specially: gather the data of the ADC type of specifying collection point, obtain frequency and the power P of maximum signal power in collected data
0; Fifth overtone and direct current signal power P before obtaining in the signal of effective frequency of this collection point in collected data
1; In collected data, obtain the power P of other signals except the signal of effective frequency
2; Call the measurement functions SNR=10 × log corresponding with SNR
10(P
0/ (P
2-P
1)), calculate the value of radio-frequency (RF) index SNR.
The present invention also provides an embodiment that radio-frequency (RF) index is output signal power, is specially: detect in real time output signal power, compare with default rated output power, send gain control according to comparing result adjustment.
In the present invention, by the preset value contrast of the data of the radio-frequency (RF) index of the different sampling locations that collect and this position, judge the working condition of up-downgoing passage.Be specially, the data of the radio-frequency (RF) index that different sampling locations are collected, the data that collected in normal operation with this sampling location contrast; By this comparing result, judge the operating state of up-downgoing passage.Described preset value i.e. this sampling location threshold value in normal operation.If the radio-frequency (RF) index that collects has exceeded the threshold value under normal operating conditions, can judge that problem has appearred in the data feedback channel at this radio-frequency (RF) index place or down going channel.
The invention also discloses a kind of radio frequency index testing system, this radio frequency index testing system comprises FPGA module, processor module;
Processor module, for according to the data acquisition parameters of set radio-frequency (RF) index, sends data acquisition command to FPGA module; For receiving the data of the radio-frequency (RF) index that FPGA module collects, call measurement functions corresponding to predefined this radio-frequency (RF) index and process;
FPGA module, the data acquisition command of the radio-frequency (RF) index sending for receiving processor module, gathers the data of corresponding radio-frequency (RF) index, sends to processor module to process the data of the radio-frequency (RF) index collecting.
Wherein, when a certain radio-frequency (RF) index is measured, according to the data acquisition parameters of the corresponding radio-frequency (RF) index of this radio-frequency (RF) index, enable measurement functions corresponding to predefined this radio-frequency (RF) index; To FPGA module, send the order that gathers this radio-frequency (RF) index; After the order of this radio-frequency (RF) index of collection that FPGA module sends according to received processor module, the data of above-mentioned radio-frequency (RF) index are carried out to acquisition operations; The data of collected described radio-frequency (RF) index are sent to processor module; Processor module calls the measurement functions corresponding with this radio-frequency (RF) index and calculates, by the result output obtaining after calculating.
The data acquisition parameters of above-mentioned set radio-frequency (RF) index, can pre-set, and leaves in EEPROM, in the time need to using the data acquisition parameters of this radio-frequency (RF) index, directly calls this parameter.This sets in advance that data acquisition parameters can reduce the different radio-frequency (RF) index parameter of each measurement and time of resetting the data acquisition parameters of radio-frequency (RF) index.
Fig. 3 is the structural representation of a kind of radio frequency index testing system in the present invention; As shown in Figure 3, this radio frequency test system comprises processor module 312, FPGA module 301; Wherein FPGA module 301 comprises: ADC interface module, DAC interface module, the digital pre-distortion module 305 being connected with DAC interface module, the peak factor being connected with digital pre-distortion module subdue module 306, subdue with peak factor that Digital Up Convert module 307, the Digital Down Converter Module 303 being connected with ADC interface module, IR interface module 308 that module is connected are connected 307 with Digital Up Convert module, IR interface module 309 is connected with Digital Down Converter Module 303, Operation and Maintenance interface module 311, signal acquisition module 310;
As shown in Figure 3, up data flow: ADC output data enter FPGA module 301; Through data down-conversion module 303, carry out mixing and multistage filtering extraction, obtaining baseband signal by IR interface module 309, outputing to IR; Descending data flow: IR interface module 308 receives the signal from IR, carries out multistage interpolation filtering by Digital Up Convert module 307, then subdues module 306 and digital pre-distortion module 305 through peak factor, by DAC interface module 304, outputs to DAC.Wherein Digital Down Converter Module 303 and Digital Up Convert module 307 respectively consist of n Ge You limit for length unit impact respective filter successively cascade.
Operation and Maintenance interface module 311, the data acquisition command sending for receiving processor module 312, transfers to signal acquisition module 310 by received data acquisition command;
Signal acquisition module 310, the data acquisition command forwarding for receiving Operation and Maintenance interface module 311, carries out data acquisition operation according to this data acquisition command to the output signal of corresponding module.
Signal acquisition module 310, when the analog signal of test simulation passage, converts analog signal to digital signal and measures, and by test of digital signal, calculates the index of analog signal.
In an embodiment of the present invention, in TDD system, need to gather the data with time point coordinate, signal acquisition module 310 can gather the data of a random time point within Frame, wherein, acquisition time produces according to the timing of system-frame signal, because in different systems, as TDD, FDD, due to the frame structure difference of system, the data acquisition different parameters of the radio-frequency (RF) index setting in advance that signal acquisition module 310 configures according to processor module 312 finds useful signal, gathers.In single carrier or multicarrier system, signal acquisition module 310 can gather the data of any carrier wave.
Processor module 312, when the data of each radio-frequency (RF) index are processed, need to complete according to the transmission rate of different sampling modules the conversion of sample rate; For example, when signal acquisition module 310 gathers the data of each radio-frequency (RF) index, due to the output speed difference of the signal of different sampling locations, the multiple parameter of the signal acquisition rate of the signal output speed of above-mentioned sampling location and signal acquisition module 310 need to be sent to processor module 312, processor module 312 is according to each radio-frequency (RF) index of multiple calculation of parameter of sampling rate.
The present invention can also be used for the fault detect of LTE system data feedback channel or down going channel; As shown in Figure 3, signal acquisition module 310 gathers the output signal of modules, by Operation and Maintenance interface module 311, send to processor module 312, processor module 312 contrasts the preset value of the data of the radio-frequency (RF) index obtaining and this radio-frequency (RF) index, judges the working condition of up-downgoing passage.Be specially the data of the radio-frequency (RF) index collecting and this radio-frequency (RF) index threshold in normal operation, if this radio-frequency (RF) index has exceeded threshold value, illustrate that problem has appearred in data feedback channel or down going channel that this radio-frequency (RF) index is represented, can also judge board consistency according to this; If the high conformity of plate, measured corresponding radio-frequency (RF) index is in default threshold value; If instead the consistency of plate is bad, measured corresponding radio-frequency (RF) index is exceeding default threshold value.
Processor module 312, by detecting in real time output signal power, compares with rated power, adjusts transmission gain and controls, and reaches power output constant.This method sends the higher precision that has of gain than serviceability temperature curve calculation.
In the present invention to the metering system of the described radio-frequency (RF) index mode that automatic cycle or manual triggers measure of can sampling.Fig. 4 is the flow chart of the measurement SNR index in one embodiment of the invention; As shown in Figure 4,
Step 401, is adc data by the data type of radio-frequency (RF) index SNR, and the acquisition time that collection SNR is set is 10ms, every 10ms, gathers a secondary data; The sampling rate of signalization acquisition module 310 is 184.32Msps.
Step 402, processor module 312 calls the measurement functions of calculating radio-frequency (RF) index SNR.
Step 403, the data acquisition command that FPGA sends according to processor module 312, the output data of 8192 ADC interface modules 302 of collection.
Step 404, processor module 312 reads the output data of the collected ADC interface module 302 of 8192, and above-mentioned data are carried out to FFT computing, is about to collected time-domain signal and is transformed into frequency-region signal.
Step 405, processor module 312 obtains frequency and the power P of maximum signal power in collected output signal
0;
Step 406, fifth overtone and direct current signal power P before processor module 312 obtains in the signal of effective frequency in collected output signal
1;
Step 407, processor module 312 obtains the power P of other signals except the signal of effective frequency in collected output signal
2;
Step 408, processor module 312 calls the measurement functions SNR=10 × log corresponding with SNR
10(P
0/ (P
2-P
1)), calculate the value of radio-frequency (RF) index SNR;
Step 409, the output value of SNR and the information of frequency.
During the output signal of above-mentioned collection ADC interface module 302, the point gathering is more, and result of calculation can be more accurate, but the resource of using is larger, and 8192 that in the present invention, gather according to multiplexing existing resource, does not increase unnecessary expense.Above-mentioned effective frequency arranges in the data acquisition parameters of radio-frequency (RF) index, the frequency of this system works referring to.
The present invention can also measure in receive path tone signal power and use in temperature experiment, when gathering tone signal power, periodically gathers the data of tone signal, and processor module calculates tone signal power according to collected tone signal data.Do not need extra personnel's participation, save labour, improved efficiency.
The present invention also provides standing-wave ratio measuring ability, and the signal that described standing-wave ratio detects by gathering the standing-wave ratio on numeric field calculates, and the measurement result of the standing-wave ratio obtaining has higher precision than the result obtaining in analog channel.
In sum, technical scheme disclosed by the invention, by by after the analog signal conversion digital signal of needs test, tests this digital signal, has improved testing radio frequency index measurement precision; In the present invention, processor module calls the measurement functions corresponding with tested radio-frequency (RF) index and calculates this radio-frequency (RF) index, needn't, using more instrument, save time and labour, has improved the efficiency of measuring radio-frequency (RF) index; The present invention sends gain control by the real-time detection of power output is adjusted, and reaches the automatic calibration of power output; In the present invention, pass through the test of the output signal of the modules to up-downgoing passage, complete the detection to up-downgoing channel failure.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, be equal to replacement, improvement etc., within all should being included in the scope of protection of the invention.
Claims (6)
1. a radio-frequency indicator testing method, is characterized in that, the method comprises:
The data acquisition parameters of radio-frequency (RF) index is set, starts measurement functions corresponding to predefined this radio-frequency (RF) index;
According to the data acquisition parameters of set radio-frequency (RF) index, gather the data of radio-frequency (RF) index;
By described measurement functions, the data of the radio-frequency (RF) index collecting are processed;
Export the data of radio-frequency (RF) index after treatment;
Wherein, the described data acquisition parameters that radio-frequency (RF) index is set comprises:
Arrange the radio-frequency (RF) index that will gather data type, gather the data of this radio-frequency (RF) index acquisition time, gather the sample rate of the data of this radio-frequency (RF) index;
The data that the described data acquisition parameters according to set radio-frequency (RF) index gathers radio-frequency (RF) index comprise:
The analog signal of the radio-frequency (RF) index that will detect is converted to after digital signal, gather this digital signal;
The data that the described data acquisition parameters according to set radio-frequency (RF) index gathers radio-frequency (RF) index comprise:
By the preset value contrast of the data of the radio-frequency (RF) index of the different sampling locations that collect and this position, judge the working condition of up-downgoing passage.
2. method according to claim 1, is characterized in that, described radio-frequency (RF) index is signal to noise ratio snr,
Describedly by measurement functions, the data of the radio-frequency (RF) index collecting are processed and are comprised:
Gather the data of the ADC type of specifying collection point, in collected data, obtain frequency and the power P of maximum signal power
0;
Fifth overtone and direct current signal power P before obtaining in the signal of effective frequency of this collection point in collected data
1;
In collected data, obtain the power P of other signals except the signal of effective frequency
2;
Call the measurement functions SNR=10 × log corresponding with SNR
10(P
0/ (P
2-P
1)), calculate the value of radio-frequency (RF) index SNR.
3. method according to claim 1, is characterized in that, described radio-frequency (RF) index is power output;
The data that the described data acquisition parameters according to set radio-frequency (RF) index gathers radio-frequency (RF) index comprise:
Detect in real time output signal power, compare with default rated output power, according to comparing result adjustment, send gain and control.
4. a radio frequency index testing system, is characterized in that, this system comprises: FPGA module, processor module; Wherein,
Processor module, for according to the data acquisition parameters of set radio-frequency (RF) index, sends data acquisition command to FPGA module; For receiving the data of the radio-frequency (RF) index that FPGA module collects, call measurement functions corresponding to predefined this radio-frequency (RF) index and process;
FPGA module, the data acquisition command of the radio-frequency (RF) index sending for receiving processor module, gathers the data of corresponding radio-frequency (RF) index, sends to processor module to process the data of the radio-frequency (RF) index collecting;
Described FPGA module comprises: another IR interface module, Operation and Maintenance interface module, signal acquisition module that ADC interface module, DAC interface module, the digital pre-distortion module being connected with DAC interface module, the peak factor being connected with digital pre-distortion module are subdued module, subdued the Digital Up Convert module that module is connected, the IR interface module being connected with Digital Up Convert module, the Digital Down Converter Module being connected with ADC interface module, are connected with Digital Down Converter Module with peak factor; Wherein,
Operation and Maintenance interface module, the data acquisition command sending for receiving processor module, transfers to signal acquisition module by received data acquisition command;
Signal acquisition module, the data acquisition command forwarding for receiving Operation and Maintenance interface module, carries out data acquisition operation according to this data acquisition command to the output signal of institute's respective modules.
5. system according to claim 4, is characterized in that, described radio-frequency (RF) index is that SNR comprises:
Signal acquisition module gathers all output signals of ADC interface module, by Operation and Maintenance interface module, sends to processor module;
Processor module obtains frequency and the power P of maximum signal power in collected output signal
0;
Fifth overtone and direct current signal power P before processor module obtains in the signal of effective frequency in collected output signal
1;
Processor module obtains the power P of other signals except the signal of effective frequency in collected output signal
2;
Processor module calls the measurement functions SNR=10 × log corresponding with SNR
10(P
0/ (P
2-P
1)), calculate the value of radio-frequency (RF) index SNR.
6. system according to claim 4, is characterized in that, described processor module, after processing for the data of radio-frequency (RF) index that signal acquisition module is collected, contrasts with the preset value of this radio-frequency (RF) index, judges the working condition of up-downgoing passage.
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| CN113572542B (en) * | 2021-08-17 | 2023-05-09 | 四川恒湾科技有限公司 | High-precision standing-wave ratio detection device for remote radio unit |
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| CN101562478A (en) * | 2009-05-25 | 2009-10-21 | 芯通科技（成都）有限公司 | Method for adaptively adjusting CFR threshold and radio frequency zooming system |
| CN101686480A (en) * | 2008-09-26 | 2010-03-31 | 大唐移动通信设备有限公司 | Method and system for parallel testing |
| CN101984703A (en) * | 2010-11-04 | 2011-03-09 | 新邮通信设备有限公司 | Method and device for determining downlink power of radio remote unit (RRU) |
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| CN1909581A (en) * | 2006-08-07 | 2007-02-07 | 南京航空航天大学 | High-speed sampling wireless sensing network node |
| CN101686480A (en) * | 2008-09-26 | 2010-03-31 | 大唐移动通信设备有限公司 | Method and system for parallel testing |
| CN101562478A (en) * | 2009-05-25 | 2009-10-21 | 芯通科技（成都）有限公司 | Method for adaptively adjusting CFR threshold and radio frequency zooming system |
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