CN109005555B - Method for testing radio frequency performance under LTE network system - Google Patents
Method for testing radio frequency performance under LTE network system Download PDFInfo
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- CN109005555B CN109005555B CN201710423002.5A CN201710423002A CN109005555B CN 109005555 B CN109005555 B CN 109005555B CN 201710423002 A CN201710423002 A CN 201710423002A CN 109005555 B CN109005555 B CN 109005555B
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- 238000012360 testing method Methods 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000008878 coupling Effects 0.000 claims abstract description 24
- 238000010168 coupling process Methods 0.000 claims abstract description 24
- 238000005859 coupling reaction Methods 0.000 claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 230000011664 signaling Effects 0.000 claims abstract description 4
- 238000004891 communication Methods 0.000 claims description 7
- 230000035945 sensitivity Effects 0.000 claims description 7
- 230000005855 radiation Effects 0.000 claims description 4
- 230000007774 longterm Effects 0.000 abstract description 2
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- 238000004519 manufacturing process Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 3
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/50—Testing arrangements
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Abstract
The invention discloses a method for testing radio frequency performance of an LTE (Long term evolution) network system, which belongs to the field of LTE network radio frequency and comprises an Agilent 8960 comprehensive tester (2), a coupling board (5), a shielding box (4), a PC (personal computer) 1 and a radio frequency transmission line (3), wherein an XTT configuration file is called by a QDART tool software tool for integration and adaptation, and a non-signaling coupling test of the LTE system radio frequency performance is realized by calling a CW waveform file of the Agilent 8960 comprehensive tester.
Description
Technical Field
The invention belongs to the field of LTE network radio frequency, and particularly relates to a method for testing radio frequency performance under an LTE network system.
Background
With the progress of science and technology, the application of the handheld terminal is more and more extensive, and the handheld terminal relates to various industries such as finance, logistics, medical treatment, retail and the like. Radio frequency testing plays an extremely important role in the production process of hand-held terminals. With the development of technology, the update cycle of radio frequency test equipment is shortened, and the cost is increased when the function is increased, and the market price is very expensive. The radio frequency detection of large-batch equipment requires an increased number of comprehensive measuring instruments, and the economic burden of small and medium-sized enterprises is undoubtedly increased.
With the rapid development of networks, the communication mobile network has been developed from the original GSM 2G era to the UMTS 3G era, and then to the current mainstream LTE 4G era. In the production process of the mobile terminal, radio frequency detection needs to be carried out on networks of different systems so as to ensure that various performances of the product meet the requirements of users. The detection in the production process of the product puts higher requirements on the functions of the radio frequency instrument. The old instrument is cheap relative to the updated instrument, but has great defects in function, so that the radio frequency test requirement of the product under the latest network system cannot be met. For example, the internal software standard of the traditional agilent 8960 comprehensive tester only supports network systems such as GSM/GPRS, WCDAM, CDMA2000 and TD-SCDMA, but does not support LTE network, so that the radio frequency index performance of the mobile terminal, i.e. the PAD terminal, in the LTE network system cannot be tested.
Disclosure of Invention
The invention aims to provide a method for testing radio frequency performance of a Long Term Evolution (LTE) network system, and solves the problem that a traditional Agilent 8960 comprehensive tester cannot test the radio frequency index performance of a PAD terminal in the LTE network system.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for testing radio frequency performance under LTE network system includes the following steps:
step 1: establishing a test platform, wherein the test platform comprises an Agilent 8960 comprehensive tester, a coupling plate, a shielding box, a PC (personal computer) and a radio frequency transmission line, QDART (quad Flat interface) tool software is installed in the PC, a USB (universal serial bus) interface of the PC is connected with a GPIB (general purpose interface bus) port of the Agilent 8960 comprehensive tester through a USB-to-GPIB (general purpose interface bus) line, one end of a radio frequency cable is connected with an RF (radio frequency) port of the Agilent 8960 comprehensive tester, the other end of the radio frequency cable is connected with a radio frequency port of the shielding box, and the radio frequency port of the coupling plate is electrically connected with the radio frequency port of the shielding box;
step 2: writing an XTT configuration file in a PC, wherein the content in the XTT configuration file comprises PA setting items and limit value setting of test corresponding items;
and step 3: placing the tested terminal PDA on the coupling board, closing the door of the shielding box, and running the XTT configuration file on the PC computer can automatically start the QDART tool software to realize the communication between the QDART tool software and the Agilent 8960 comprehensive tester;
and4, step 4: the method is characterized in that a non-signaling coupling mode is adopted for testing, namely, a PC computer controls an Agilent 8960 comprehensive tester to send electromagnetic wave signals for testing, the Agilent 8960 comprehensive tester transmits the electromagnetic wave signals to a coupling plate through a radio frequency transmission line, the coupling plate communicates with an antenna end of a terminal PDA, the terminal PDA is connected with the PC computer through a USB port, the terminal PDA receives or sends the signals through a QDART tool software to control an internal circuit of the terminal PDA, the Agilent 8960 comprehensive tester receives or sends the electromagnetic signals through the coupling plate in real time, and after the QDART tool software testing is completed, a test report can be automatically generated.
The performances of the terminal PDA under the LTE network system comprise omnidirectional radiation power TRP and omnidirectional receiving sensitivity TIS.
The QDART tool software is provided with a QSPR tool, the limit setting of the test corresponding item comprises an Init item, an RX item, a TXA item and a Final data logging item, and the main functions of the Init item comprise obtaining the ID of the tested aircraft, loading the initial data of the QDART tool software and communication and mode check of a terminal PDA; the RX item mainly tests the sensitivity of the terminal PDA to receive data; the TX item mainly tests the PDA transmitting power of the terminal; the Final data logging item is used for outputting a test data report; the Init, RX, TXA and Final data logging items are all contained in the QSPR tool.
The method for testing the radio frequency performance of the LTE network system solves the problem that the traditional Agilent 8960 comprehensive tester cannot test the radio frequency index performance of the PAD terminal in the LTE network system, has the advantages of short testing time, high efficiency, good stability and the like, and is suitable for radio frequency comprehensive testing of production line mass production machine types.
Drawings
FIG. 1 is a system block diagram of a test platform of the present invention;
in fig. 1: the device comprises a PC computer 1, an Agilent 8960 comprehensive tester 2, a radio frequency transmission line 3, a shielding box 4 and a coupling board 5.
Detailed Description
A method for testing radio frequency performance under LTE network system includes the following steps:
step 1: establishing a test platform, wherein the test platform comprises an Agilent 8960 comprehensive tester 2, a coupling plate 5, a shielding box 4, a PC computer 1 and a radio frequency transmission line 3, QDART tool software is installed in the PC computer 1, a USB interface of the PC computer 1 is connected with a GPIB port of the Agilent 8960 comprehensive tester through a USB-to-GPIB line, one end of a radio frequency cable is connected with an RF port of the Agilent 8960 comprehensive tester, the other end of the radio frequency cable is connected with a radio frequency port of the shielding box 4, and the radio frequency port of the coupling plate 5 is electrically connected with the radio frequency port of the shielding box 4;
step 2: writing an XTT configuration file in a PC (personal computer) 1, wherein the content in the XTT configuration file comprises PA (power amplifier) setting items and limit value setting of test corresponding items;
and step 3: placing the tested terminal PDA on the coupling plate 5, closing the door of the shielding box 4, and running the XTT configuration file on the PC computer can automatically start the QDART tool software to realize the communication between the QDART tool software and the Agilent 8960 comprehensive tester;
and4, step 4: the method is characterized in that a non-signaling coupling mode is adopted for testing, namely, firstly, a PC (personal computer) 1 controls an Agilent 8960 comprehensive tester to send electromagnetic wave signals for testing, the Agilent 8960 comprehensive tester transmits the electromagnetic wave signals to a coupling plate 5 through a radio frequency transmission line 3, the coupling plate 5 communicates with an antenna end of a terminal PDA, the terminal PDA is connected with the PC 1 through a USB (universal serial bus) port, the receiving or sending of signals of the terminal PDA is realized by controlling an internal circuit of the terminal PDA through QDART tool software, the Agilent 8960 comprehensive tester receives or sends the electromagnetic signals in real time through the coupling plate, and after the testing is finished through the QDART tool software, a test report can be automatically generated.
The performances of the terminal PDA under the LTE network system comprise omnidirectional radiation power TRP and omnidirectional receiving sensitivity TIS.
The QDART tool software is provided with a QSPR tool, the limit setting of the test corresponding item comprises an Init item, an RX item, a TXA item and a Final data logging item, and the main functions of the Init item comprise obtaining the ID of the tested aircraft, loading the initial data of the QDART tool software and communication and mode check of a terminal PDA; the RX item mainly tests the sensitivity of the terminal PDA to receive data; the TX item mainly tests the PDA transmitting power of the terminal; the Final data logging item is used for outputting a test data report; the Init, RX, TXA and Final data logging items are all contained in the QSPR tool.
The test frequency range of the invention comprises FDD BAND1, BAND3, BAND7, TDD BAND38, BAND39, BAND40 and BNAD 4; the frequency ranges of FDD BAND1, BAND3 and BAND7 are 1920MHz-2570 MHz; the frequency ranges of TDD BAND38, BAND39, BAND40 and BNAD4 are 2570MHz-2690 MHz.
Other frequency bands can be added to the above frequency band range for testing, and the test items can be added or deleted at will by modifying the RX item and the TX item in the XTT configuration file.
During testing, each BAND can select to test the intermediate frequency point, namely the intermediate channel: the middle channel of BAND1 is 18300 channel, the middle channel of BAND3 is 19575 channel, the middle channel of BAND7 is 21100 channel, the middle channel of BAND38 is 38000 channel, the middle channel of BAND39 is 38450 channel, the middle channel of BAND40 is 39100 channel, and the middle channel of BAND41 is 40620 channel.
The TRP and TIS are respectively the sum of the three-dimensional omnidirectional radiation POWER and the three-dimensional omnidirectional receiving sensitivity under the spherical coordinate, in QDART tool software, the TRP index mainly observes a TX POWER value, and the TIS index mainly observes an RX LEVEL value.
The method for testing the radio frequency performance of the LTE network system solves the problem that the traditional Agilent 8960 comprehensive tester cannot test the radio frequency index performance of the PAD terminal in the LTE network system, has the advantages of short testing time, high efficiency, good stability and the like, is suitable for radio frequency comprehensive testing of production line mass production models, and particularly can save cost and improve efficiency under the condition of resource shortage of high-end comprehensive testers.
Claims (3)
1. A method for testing radio frequency performance under LTE network system is characterized in that: the method comprises the following steps:
step 1: establishing a test platform, wherein the test platform comprises an Agilent 8960 comprehensive tester (2), a coupling plate (5), a shielding box (4), a PC (1) and a radio frequency transmission line (3), QDART tool software is installed in the PC (1), a USB interface of the PC (1) is connected with a GPIB port of the Agilent 8960 comprehensive tester through a USB-to-GPIB line, one end of a radio frequency cable is connected with an RF port of the Agilent 8960 comprehensive tester, the other end of the radio frequency cable is connected with a radio frequency port of the shielding box (4), and the radio frequency port of the coupling plate (5) is electrically connected with the radio frequency port of the shielding box (4);
step 2: writing an XTT configuration file in a PC (1), wherein the content in the XTT configuration file comprises PA setting items and limit value setting of test corresponding items;
and step 3: placing a tested terminal PDA on a coupling board (5), closing a door of a shielding box (4), and running an XTT configuration file on a PC computer can automatically start QDART tool software to realize the communication between the QDART tool software and an Agilent 8960 comprehensive tester;
and4, step 4: the method comprises the following steps that a non-signaling coupling mode is adopted for testing, namely, a PC (1) controls an Agilent 8960 comprehensive tester to send electromagnetic wave signals for testing, the Agilent 8960 comprehensive tester transmits the electromagnetic wave signals to a coupling plate (5) through a radio frequency transmission line (3), the coupling plate (5) communicates with an antenna end of a terminal PDA, the terminal PDA is connected with the PC (1) through a USB port, the terminal PDA receives or sends signals by controlling an internal circuit of the terminal PDA through QDART tool software, the Agilent 8960 comprehensive tester receives or sends the electromagnetic signals in real time through the coupling plate, and a test report can be automatically generated after the QDART tool software is used for testing;
the test frequency BAND range comprises FDD BAND1, BAND3, BAND7, TDD BAND38, BAND39, BAND40 and BNAD 4; the frequency ranges of FDD BAND1, BAND3 and BAND7 are 1920MHz-2570 MHz; the frequency ranges of TDD BAND38, BAND39, BAND40 and BNAD4 are 2570MHZ-2690 MHZ;
other frequency bands can be added to the frequency band range for testing, and the test items can be added or deleted at will by modifying the RX item and the TX item in the XTT configuration file;
the GPIB is General-Purpose Interface Bus (General-Purpose Interface Bus) and is a Bus for connecting equipment and a computer; most desktop instruments are connected with a computer through a GPIB wire and a GPIB interface;
the PA setting item is a radio frequency power amplifier setting, and the PA is a radio frequency power amplifier.
2. The method for testing radio frequency performance under the LTE network standard according to claim 1, wherein: the performances of the terminal PDA under the LTE network system comprise omnidirectional radiation power TRP and omnidirectional receiving sensitivity TIS.
3. The method for testing radio frequency performance under the LTE network standard according to claim 1, wherein: the QDART tool software is provided with a QSPR tool, the limit setting of the test corresponding item comprises an Init item, an RX item, a TXA item and a Final data logging item, and the main functions of the Init item comprise obtaining the ID of the tested aircraft, loading the initial data of the QDART tool software and communication and mode check of a terminal PDA; the RX item mainly tests the sensitivity of the terminal PDA to receive data; the TX item mainly tests the PDA transmitting power of the terminal; the Final data logging item is used for outputting a test data report; the Init, RX, TXA and Final data logging items are all contained in the QSPR tool.
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Address after: No.15 Xinghuo Road, Jiangbei new district, Nanjing, Jiangsu Province, 210031 Patentee after: Dongji Technology Co.,Ltd. Address before: 210000 room 406, software center, Nanjing high tech Industrial Development Zone, Jiangsu Province Patentee before: JIANGSU SEUIC TECHNOLOGY Co.,Ltd. |
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Application publication date: 20181214 Assignee: Nanjing Dongji Zhixin Technology Development Co.,Ltd. Assignor: Dongji Technology Co.,Ltd. Contract record no.: X2023980052179 Denomination of invention: A Method for Testing RF Performance under LTE Network Standard Granted publication date: 20210806 License type: Common License Record date: 20231215 |
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