CN101064572B - Method, test tool and test system for testing sensitivity of terminal receiver - Google Patents
Method, test tool and test system for testing sensitivity of terminal receiver Download PDFInfo
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- CN101064572B CN101064572B CN2006100760452A CN200610076045A CN101064572B CN 101064572 B CN101064572 B CN 101064572B CN 2006100760452 A CN2006100760452 A CN 2006100760452A CN 200610076045 A CN200610076045 A CN 200610076045A CN 101064572 B CN101064572 B CN 101064572B
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Abstract
The invention relates to testing method, testing tool and testing system of terminal receiver sensitivity, the core is: the testing tool controls the signal source to generate wireless signal and transmits known data to the equipment which is to be tested, the equipment demodulates and FEC decodes the data, then it is transmitted to the spectrum analyzer; the spectrum analyzer demodulates and decodes the wireless signal, and provides data to testing tool; the testing tool calculates error code based on the data of signal source and the received data. The invention does not depend on TEST BS equipment, and the invention can make test data accurate, the efficiency is high, besides the invention can be used in development, testing, manufacture and operating attestation testing of SS, it provides a scheme of testing sensitivity of SS receiver for device supplier and operator.
Description
Technical field
The present invention relates to the communications field, relate in particular to measuring technology sensitivity of terminal receiver.
Background technology
WiMax (Worldwide Interoperability for Microwave Access, World Interoperability for Microwave Access, WiMax) is the broadband wireless access standard with wide market prospects, and it is mainly used in wireless MAN.It adopts OFDM (Orthogonal Frequency-division Multiplexing, orthogonal multiplex modulation) multi-carrier transmission technology based on IEEE 802.16d agreement at microwave and millimeter wave frequency band, and the transmission of high-speed data service air interface is provided.
Receiver sensitivity is to weigh the most basic, the most important index of SS (Subscriber Station, WiMax terminal) receiver performance, and BER (Bit Error Rate, bit error rate) is claimed in the receiver sensitivity test test again.Because the WiMax technology is new; Supplier only provides the IEEE 802.16d agreement option of signal source and spectrum analyzer; The rf integration tester of the BER of the air interface that do not provide support Loopback Mode test; And the signal source function singleness that is provided, can only launch and can not receive, obviously do not support air interface loopback test mode.
The prior art relevant with the present invention; Be a kind of RCT (the Radio Conformance Tests that is used for testing the SS receiver sensitivity that recommends by WiMax Forum; The RF consistency test) Test Networking model (being called for short SS RCT Test Networking model); Its operation principle is as shown in Figure 1, comprises generator package, TEST BS (Base Station, WiMax base station), tested SS, attenuator and power meter.
Its course of work is following:
Generator package produces packet, and the air interface through TEST BS is handed down to SS, and generator package is returned in the air interface data packing of SS after with demodulation, and generator package carries out the Packet Error Ratio statistics; The input power of SS can be regulated through adjustable attenuator according to the measured value of power meter; Parameters such as frame length, frequency, bandwidth, CP (Cyclic Prefix, Cyclic Prefix), modulation system are configured through TEST BS.
When utilizing prior art that the sensitivity of tested SS receiver is tested, there is following shortcoming:
1, because present industry does not also have TEST BS equipment, and the RCT network model that provides in the prior art is Utopian Test Networking model, can't realize this Test Networking model that WiMax Forum recommends at present; In addition, the sensitivity index of SS receiver is influenced by the emission index of TEST BS.
2, this Test Networking model is based on the method that Packet Error Ratio converts bit error rate to, has the confidence level problem and convert bit error rate to from Packet Error Ratio.
3, this Test Networking model networking is complicated, and testing efficiency is low; And the combination of WIMAX air interface index parameter is many, the method inapplicable research and development traversal test and production lot test.
Summary of the invention
The purpose of this invention is to provide a kind of method, testing tool and test macro to testing sensitivity of terminal receiver; When using the receiver sensitivity of test terminal of the present invention; Do not rely on TEST BS equipment, thereby solved in the prior art key issue that must be limited by TEST BS equipment when the receiver sensitivity at terminal carried out the BER test.
The objective of the invention is to realize through following technical scheme:
The present invention is through a kind of test macro, and it comprises:
Equipment under test, signal source, spectrum analyzer and testing tool;
Said signal source is used to produce wireless signal, and through said signal given data is sent;
Said equipment under test is used for said wireless signal separated to be in harmonious proportion sending after decoding FEC is handled;
Said spectrum analyzer is used for that the wireless signal that equipment under test sends is carried out demodulation analysis and handles;
Said testing tool is used to control the processing of said signal source, equipment under test and said spectrum analyzer, and carries out error code according to the data of data that obtain after the said spectrum analyzer analyzing and processing and signal source transmission and calculate.
Wherein, said testing tool comprises:
Control unit and test cell;
Said control unit is used for the control signal source and produces wireless signal, and through said signal given data sent; And the control equipment under test is separated to be in harmonious proportion to said wireless signal and is sent after decoding FEC is handled; And the wireless signal that the control spectrum analyzer sends equipment under test carries out the demodulation analysis processing;
Said test cell is used for carrying out error code according to the data of data that obtain after the spectrum analyzer analyzing and processing and signal source transmission and calculates.
Wherein, said testing tool also comprises:
Memory cell is used for the error code data that storage computation obtains.
Wherein, said testing tool also comprises:
Parameter configuration unit is used to dispose equipment under test and is in wrapped state, the parameter of configuration signal source generation signal and the parameter of configuring spectrum analyzer.
Wherein, described test macro also comprises:
Circulator is used for the air interface signals of equipment under test is received and dispatched isolation processing.
The present invention provides a kind of testing tool, and it comprises:
Control unit and test cell;
Said control unit is used for the control signal source and produces wireless signal, and through said signal given data sent; And the control equipment under test is separated to be in harmonious proportion to said wireless signal and is sent after decoding FEC is handled; And the wireless signal that the control spectrum analyzer sends equipment under test carries out the demodulation analysis processing;
Said test cell is used for carrying out error code according to the data of data that obtain after the spectrum analyzer analyzing and processing and signal source transmission and calculates.
Wherein, described testing tool also comprises:
Memory cell is used for the error code data that storage computation obtains.
Wherein, described test macro also comprises:
Parameter configuration unit is used to dispose equipment under test and is in wrapped state, the parameter of configuration signal source generation signal and the parameter of configuring spectrum analyzer.
The present invention provides a kind of method to testing sensitivity of terminal receiver, and it comprises:
A, produce wireless signal, and send given data to equipment under test through said wireless signal and separate and be in harmonious proportion decoding FEC and handle the back and send through air interface and go back through signal source;
The wireless signal that B, spectrum analyzer send the equipment under test that receives carries out the demodulation sign indicating number to be handled, and obtains analyzing data;
C, the data of sending according to said analysis data and signal source are carried out error code and are calculated.
Wherein, said steps A specifically comprises:
A1, produce wireless signal through signal source, and through sending equipment under test behind the circulator to;
A2, said equipment under test separate said wireless signal and are in harmonious proportion decoding FEC and handle, with after send after the modulation treatment;
The wireless signal that A3, equipment under test send carries out sending spectrum analyzer to after Signal Spacing is handled through circulator.
Wherein, before said steps A, comprise:
The parameter of the wireless signal that produces through testing tool configuration signal source, the test parameter that the configuration equipment under test is in wrapped state and configuring spectrum analyzer.
Wherein, said steps A 1 specifically comprises:
Signal parameter according to the testing tool configuration produces wireless signal through signal source, and through said signal data is sent, and carries out sending equipment under test to after Signal Spacing is handled through circulator then.
Wherein, said steps A 2 specifically comprises:
Said equipment under test carries out demodulation process to said wireless signal, then the data that obtain after the demodulation is carried out decoding FEC, with after send through the air interface loopback after the modulation treatment.
Wherein, said step B specifically comprises:
Spectrum analyzer carries out demodulation process to the wireless signal that the equipment under test that receives sends, and analyzes according to the data that parameter that testing tool disposed obtains after to demodulation process, obtains analyzing data.
Technical scheme by the invention described above provides can be found out; The present invention analyzes the wireless signal that tested SS transmits through testing tool control spectrum analyzer; And obtain the reception data of said spectrum analyzer and the transmission data of signal source, and carry out error code according to the two and calculate through testing tool.Therefore use the present invention when testing; Be no longer dependent on TEST BS equipment; And the present invention can make test data accurate; Testing efficiency is high, and the present invention can be widely used in exploitation, test, production and the operation authentication test of SS in addition, for equipment vendor and operator provide a kind of the SS receiver sensitivity is carried out the solution that efficient BER tests.
Description of drawings
Fig. 1 is the fundamental diagram of the RCT Test Networking that provides in the prior art;
Fig. 2 is the test macro Organization Chart among first embodiment provided by the invention;
Fig. 3 is the flow chart among the 3rd embodiment provided by the invention.
Embodiment
First embodiment provided by the invention is to utilize the test macro of air interface Loopback Mode through the receiver sensitivity of gpib bus control signal source and spectrum analyzer realization test SS, and the structure of this test macro is as shown in Figure 2, comprises following components and parts:
Signal source, tested SS, spectrum analyzer, testing tool (BER_TEST) and circulator.Said testing tool is connected with spectrum analyzer with signal source through gpib bus, is connected with tested SS through Ethernet interface ETH.The air interface of tested SS is connected with signal source and spectrum analyzer through circulator; Signal source produces wireless signal; And (said data can be produced by signal source to carry given data through said wireless signal; Also can offer signal source through miscellaneous equipment), and to spectrum analyzer synchronised clock is provided through said wireless signal; Testing tool is realized control to tested SS, signal and spectrum analyzer.
The function of each components and parts is described respectively below:
Said signal source is used to produce the Wimax wireless signal based on the 802.16d model agreement, and through said wireless signal given data is sent through air interface.
Said tested SS is used for the wireless signal that receives through air interface is carried out demodulation, decoding and correction process, and sends to spectrum analyzer through air interface.
Said spectrum analyzer is used for the Wimax wireless air interface signal frame based on the 802.16d model agreement is carried out receiving demodulation and analysis.
Said circulator is used for equipment under test is isolated through the wireless signal of air interface transmitting-receiving.
Said testing tool comprises parameter configuration unit, control unit, test cell and memory cell.Wherein said parameter configuration unit is used to dispose equipment under test and is in wrapped state, the parameter of configuration signal source generation signal and the parameter of configuring spectrum analyzer.
Said control unit according to the parameter of said parameter configuration unit configuration respectively equipment under test control signal source, spectrum analyzer and tested SS handle according to situation about being disposed:
Control said signal source according to the parameter generating of the signal of said testing tool configuration Wimax wireless signal, and, send through air interface through said wireless signal carrying given data based on the 802.16d model agreement.
Control tested SS the wireless signal that receives through air interface is carried out demodulation, decoding and correction process, and send to spectrum analyzer through air interface.
Control said spectrum analyzer the Wimax wireless air interface signal frame based on the 802.16d model agreement is carried out receiving demodulation and analysis.
Said test cell is used for carrying out error code according to the data that the analysis data and the signal source of spectrum analyzer are sent and calculates.
Said memory cell is used for the error code data that storage computation obtains.
Said circulator is used for equipment under test is isolated through the wireless signal of air interface transmitting-receiving.
The operation principle of this test macro is following:
At first, testing tool need be done following configuration:
1, the control unit of testing tool is through the various parameters of gpib bus configuration signal source generation wireless signal, like frequency, power, frame length, bandwidth, CP, modulation system etc.
2, dispose tested SS through the maintenance network port transmitting order to lower levels and be in wrapped state, promptly the wireless signal that at first signal source sent of SS receiver carries out sending from air interface with suitable power after demodulation, correction process and the modulation treatment.
3, the measurement parameter of configuring spectrum analyzer.
Then, the control unit of testing tool sends the wireless signal based on IEEE 802.16d agreement through gpib bus control signal source according to the signal parameter that disposes, and carries given data through said wireless signal.
The control unit control wireless signal of testing tool is received and dispatched isolation through circulator, sends out.
After said tested SS receives said wireless signal through air interface; At first it is carried out demodulation process; Then the wireless signal that obtains after the demodulation is carried out fec decoder and handle, and the control that the signal that obtains after the error correction carries out the control unit of the laggard testing tool that worked of modulation treatment is again sent from the air interface loopback.
The wireless signal of equipment under test loopback closes through circulator and sends spectrum analyzer to after handle along separate routes on the road.
Said spectrum analyzer carries out demodulation to the Wimax wireless signal based on the 802.16d agreement that receives, and the wireless signal that obtains after to demodulation process according to parameter that testing tool disposed carries out analyzing and processing, obtains analyzing data.
Testing tool passes through the analysis data of gpib bus retaking of a year or grade spectrum analyzer, and its data with the signal source transmission are compared, and according to comparative result statistics and calculating bit error rate, at last result of calculation is preserved then.
Second embodiment provided by the invention is a kind of testing tool, and it comprises:
Parameter configuration unit, control unit, test cell and memory cell;
Said parameter configuration unit configuration equipment under test is in wrapped state, the configuration signal source produces the parameter of signal and the parameter of configuring spectrum analyzer.Specific as follows:
1, the control unit of testing tool is through the various parameters of gpib bus configuration signal source generation signal, like frequency, power, frame length, bandwidth, CP, modulation system etc.
2, dispose tested SS through the maintenance network port transmitting order to lower levels and be in wrapped state, promptly the wireless signal that at first signal source sent of SS receiver carries out sending from air interface with suitable power after demodulation, correction process and the modulation treatment.
3, the measurement parameter of configuring spectrum analyzer.
Said control unit is according to the various parameters of the generation signal that disposes for signal source, and the control signal source produces wireless signal, and sends through said signaling bearer given data; And the control equipment under test is separated to be in harmonious proportion to said wireless signal and is sent after decoding FEC is handled; And the wireless signal that the control spectrum analyzer sends equipment under test carries out the demodulation analysis processing;
The data that data that said test cell obtains after according to the spectrum analyzer analyzing and processing and signal source are sent are carried out error code and are calculated.The error code data that calculate through said cell stores then.
The 3rd embodiment provided by the invention is based on a kind of method of testing that above-mentioned test macro is realized the sensitivity of test SS receiver, and its realization flow is as shown in Figure 3, comprises the steps:
Signal parameter when step 1, configuration signal source produce signal, make tested SS be in the measurement parameter of wrapped state and spectrum analyzer.
In step 1, testing tool passes through the various parameters that gpib bus configuration signal source produces signal, like frequency, power, frame length, bandwidth, CP, modulation system etc., and the measurement parameter of spectrum analyzer.
Dispose tested SS through the maintenance network port transmitting order to lower levels and be in wrapped state, promptly the wireless signal that at first signal source sent of SS receiver carries out sending from air interface with suitable power after demodulation, correction process and the modulation treatment.
Step 2, the control signal source produces the wireless signal based on IEEE 802.16d agreement according to the signal parameter of configuration, and carries given data through said wireless signal and send, and carries out sending out after Signal Spacing handles through circulator.
Send wireless signal through gpib bus control signal source according to the signal parameter that disposes based on IEEE 802.16d agreement.
Step 3 after tested SS receives said wireless signal through air interface, is separated data wherein and to be in harmonious proportion after decoding FEC handles, and sends through the air interface loopback.
After tested SS receives said wireless signal through air interface; At first it is carried out demodulation process; Then the data that obtain after the demodulation are carried out fec decoder and handle, and the data that obtain after the error correction are carried out the laggard air interface loopback that worked of modulation treatment again send.
Step 4, the wireless signal of equipment under test loopback carries out sending spectrum analyzer to after Signal Spacing is handled through circulator.
Step 5, said spectrum analyzer carries out demodulation to the Wimax wireless signal based on the 802.16d agreement that receives, and carries out analyzing and processing according to the data that parameter that testing tool disposed obtains after to demodulation process, obtains analyzing data.
Step 6 reads the analysis data of spectrum analyzer, and data that itself and signal source are sent compare, then according to the comparative result statistics with calculate bit error rate.
Testing tool passes through the analysis data of gpib bus retaking of a year or grade spectrum analyzer, and its data with the signal source transmission are compared, and according to comparative result statistics and calculating bit error rate, at last result of calculation is preserved then.
Specific embodiments by the invention described above can be found out; The present invention analyzes the wireless signal that tested SS transmits through spectrum analyzer; And obtain the analysis result of said spectrum analyzer and the transmission data of signal source, and carry out error code according to the two and calculate through testing tool.Therefore use the present invention when testing, be no longer dependent on TEST BS equipment, and the present invention can make test data accurate, testing efficiency is high; The present invention can be widely used in exploitation, test, production and the operation authentication test of SS in addition, for equipment vendor and operator provide a kind of solution of the SS receiver sensitivity being carried out efficient BER test.
The above; Be merely the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (6)
1. a test macro is characterized in that, comprising:
Equipment under test, signal source, spectrum analyzer, circulator and testing tool, the air interface of equipment under test is connected with signal source and spectrum analyzer through circulator, wherein:
Said signal source is used to produce wireless signal, and through said signal given data is sent;
Said equipment under test is used for said wireless signal separated to be in harmonious proportion sending after decoding FEC is handled;
Said spectrum analyzer is used for that the wireless signal that equipment under test sends is carried out demodulation analysis and handles;
Said circulator is used for the air interface signals of equipment under test is received and dispatched isolation processing;
Said testing tool comprises parameter configuration unit, control unit, and test cell and memory cell, wherein:
Said parameter configuration unit is used to dispose equipment under test and is in wrapped state, the parameter of configuration signal source generation signal and the parameter of configuring spectrum analyzer;
Said control unit is used for the control signal source and produces wireless signal, and through said signal given data sent; And the control equipment under test is separated to be in harmonious proportion to said wireless signal and is sent after decoding FEC is handled; And the wireless signal that the control spectrum analyzer sends equipment under test carries out the demodulation analysis processing;
Said test cell is used for carrying out error code according to the data of data that obtain after the spectrum analyzer analyzing and processing and signal source transmission and calculates;
Said memory cell is used for the error code data that storage computation obtains.
2. a testing tool is characterized in that, comprising:
Parameter configuration unit, control unit, test cell and memory cell, wherein:
Said parameter configuration unit is used to dispose equipment under test and is in wrapped state, the parameter of configuration signal source generation signal and the parameter of configuring spectrum analyzer;
Said control unit is used for the control signal source and produces wireless signal, and through said signal given data sent; And the control equipment under test is separated to be in harmonious proportion to said wireless signal and is sent after decoding FEC is handled; And the wireless signal that the control spectrum analyzer sends equipment under test carries out the demodulation analysis processing;
Said test cell is used for carrying out error code according to the data of data that obtain after the spectrum analyzer analyzing and processing and signal source transmission and calculates;
Said memory cell is used for the error code data that storage computation obtains.
3. the method to testing sensitivity of terminal receiver is characterized in that, comprising:
The parameter of A0, the wireless signal that produces through testing tool configuration signal source, the test parameter that the configuration equipment under test is in wrapped state and configuring spectrum analyzer;
A1, produce wireless signal through signal source, and through sending equipment under test behind the circulator to;
A2, said equipment under test separate said wireless signal and are in harmonious proportion decoding FEC and handle, with after send after the modulation treatment;
The wireless signal that A3, equipment under test send carries out sending spectrum analyzer to after Signal Spacing is handled through circulator;
The wireless signal that B, spectrum analyzer send the equipment under test that receives carries out the demodulation sign indicating number to be handled, and obtains analyzing data;
C, the data of sending according to said analysis data and signal source are carried out error code and are calculated.
4. method according to claim 3 is characterized in that, said steps A 1 specifically comprises:
Signal parameter according to the testing tool configuration produces wireless signal through signal source, and through said signal data is sent, and carries out sending equipment under test to after Signal Spacing is handled through circulator then.
5. method according to claim 3 is characterized in that, said steps A 2 specifically comprises:
Said equipment under test carries out demodulation process to said wireless signal, then the data that obtain after the demodulation is carried out decoding FEC, with after send through the air interface loopback after the modulation treatment.
6. method according to claim 3 is characterized in that, said step B specifically comprises:
Spectrum analyzer carries out demodulation process to the wireless signal that the equipment under test that receives sends, and analyzes according to the data that parameter that testing tool disposed obtains after to demodulation process, obtains analyzing data.
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| CN100433884C (en) * | 2006-09-22 | 2008-11-12 | 北京天碁科技有限公司 | System and method for testing receiving quality of wireless terminal equipment |
| CN102740109B (en) * | 2011-04-15 | 2014-12-10 | 中国移动通信集团公司 | Method, system and device for determining receiving sensitivity of terminal |
| CN104683047B (en) * | 2013-11-29 | 2018-02-27 | 中国人民解放军63888部队 | Signal source joint control circuit and the analog receiver test system being made from it |
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| CN103957067B (en) * | 2014-04-21 | 2016-07-06 | 清华大学 | Demodulator automatic testing equipment |
| CN104683045B (en) * | 2014-12-10 | 2017-11-14 | 中国人民解放军63888部队 | A kind of scanning receiver instantaneous dynamic range method of testing and its system |
| CN105024770B (en) * | 2015-06-14 | 2017-04-12 | 中国电子科技集团公司第十研究所 | Quantitative testing for sensitivity of a non-coherent FMCW autodyne receiver |
| CN105491596B (en) * | 2015-11-26 | 2019-07-09 | 惠州Tcl移动通信有限公司 | Acquisition methods, system and mobile terminal are tested in a kind of mobile terminal sensitivity automatically |
| CN108288366A (en) * | 2017-01-07 | 2018-07-17 | 华东交通大学 | Infrared and radio number passes detector |
| CN107896132A (en) * | 2017-11-07 | 2018-04-10 | 上海同耀通信技术有限公司 | LAN protocol detecting system |
| CN112118150B (en) * | 2020-08-20 | 2022-04-12 | 中国信息通信研究院 | Satellite internet-based on-orbit testing method and system |
| WO2023092408A1 (en) * | 2021-11-25 | 2023-06-01 | 华为技术有限公司 | Communication method, apparatus and system |
| CN114553382B (en) * | 2022-02-24 | 2023-08-01 | 中电科思仪科技股份有限公司 | 5G NR signal demodulation method and system capable of automatically configuring public parameters |
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