CN102946284A - System and method for calibrating and testing radio frequency of WIFI - Google Patents
System and method for calibrating and testing radio frequency of WIFI Download PDFInfo
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Abstract
The invention discloses a system and a method for calibrating and testing the radio frequency of a WIFI (wireless fidelity). The system comprises a transceiving device for WIFI radio frequency under test, a modular transceiving device for WIFI radio frequency for enabling various parameters to reach the standard by calibration and debugging, and a control device for controlling the transceiving device for WIFI radio frequency under test and the modular transceiving device for WIFI radio frequency, wherein the radio frequency transceiving end of the transceiving device for WIFI radio frequency under test is connected with that of the modular transceiving device for WIFI radio frequency by a feeder line; and the control device is connected with the data ends of both the transceiving device for WIFI radio frequency under test and the modular transceiving device for WIFI radio frequency by a wire respectively. The system and method have the advantages that the usage quantity of radio frequency meters can be reduced, equipment is saved and the capacity is increased when the modular transceiving device for WIFI radio frequency is used for calibrating and testing radio frequency; and meanwhile, the control device can implement function deep customization by changing software function based on a PC (personnel computer).
Description
Technical field
The present invention relates to a kind of RF calibration and test macro, relate in particular to a kind of wireless network RF calibration and test macro and calibration and test side.
Background technology
Existing WIFI(wireless network) RF calibration of equipment and test all are calibration and the tests that instrumentation carries out radio frequency generally, and on the one hand, the testing efficiency of test instrumentation and customization require lower, can't satisfy diversified test request; On the other hand, the test instrumentation price is more expensive, to the unable extensive purchase of medium-sized and small enterprises, will certainly affect its production capacity like this.
Summary of the invention
The problems referred to above that exist during for existing Wireless Communication Equipment RF calibration and test now provide a kind of wireless network RF calibration that is intended to reduce cost and can highly customizes and test macro and calibration and test side.
A kind of wireless network RF calibration and test macro, wherein, comprise wireless network RF receiving/transmission device to be tested, the control device that makes parameters template wireless network RF receiving/transmission device up to standard and be used for controlling wireless network transceiving device to be tested and template wireless network RF receiving/transmission device through calibrating debugging;
The radio-frequency receiving-transmitting end of described wireless network RF receiving/transmission device to be tested is connected by the radio-frequency receiving-transmitting end of feeder line with described template wireless network RF receiving/transmission device;
Described control device is connected respectively with the data terminal of described wireless network RF receiving/transmission device to be tested and the data terminal of described template wireless network transceiving device by netting twine.
Preferably, be connected with signal attenuation device between the radio-frequency receiving-transmitting end of the radio-frequency receiving-transmitting end of described wireless network RF receiving/transmission device to be tested and described template wireless network RF receiving/transmission device.
Preferably, described control device is connected respectively with the data terminal of described wireless network RF receiving/transmission device to be tested and the data terminal of described template wireless network transceiving device by signal exchanging apparatus.
Preferably, described control device is the PC that specific software is installed.
A kind of wireless network RF calibration and method of testing wherein, comprise above-mentioned wireless network RF calibration and test macro, specifically comprise the steps,
Preset step a, described the control device channel, multiple different test rate, transmitted power, the differences under the different test rate that need test the test the speed standard of passing through of EVM value under received RF signal strength criterion under the rate and the different rate that tests the speed of transmission bag number, the difference of wireless network radio frequency gimmick equipment to be tested under the rate that tests the speed;
Step b, described control device are controlled described wireless network RF receiving/transmission device to be tested by selected channel, carry out radio-frequency transmissions with the test rate that presets in the described control device;
Step c, described template wireless network RF receiving/transmission device receive described wireless network RF receiving/transmission device to be tested and send radiofrequency signal, and the radio-frequency (RF) signal strength result who receives is back to described control device;
Steps d, described control device are with received RF signal strength criterion under the radio-frequency (RF) signal strength result who receives and the present rate that presets relatively, and adjust the transmitting power of described wireless network RF receiving/transmission device to be tested according to comparative result, until the signal strength signal intensity that described template wireless network RF receiving/transmission device receives meets received RF signal strength criterion under the present rate that presets in the described control device.Described control device control described wireless network RF receiving/transmission device to be tested with current transmit power as the target transmit power of current channel under lower front speed;
Step e, repeating step b are to steps d, until all channels that preset in the described control device are all determined target transmit power under all test rates;
Step f, described control device are controlled the wireless network data bag that described wireless network RF receiving/transmission device one target power to be tested sends selected channel, selected speed;
Step g, described template wireless network RF receiving/transmission device receive the EVM value of calculating behind the wireless network data bag under the present rate, and result of calculation is sent to described control device;
Step h, described control device pass through standard relatively with the EVM value under the result of calculation of receiving and the present rate of presetting, judge whether described wireless network RF receiving/transmission device to be tested can pass through this test;
Step I, repeating step f be to step h, until the equal tested mistake of the EVM value of all channels that preset in the described control device under all test rates.
A kind of wireless network radio frequency test method wherein, comprises above-mentioned wireless network RF calibration and test macro, specifically comprises the steps,
Step s1, described control device preset the channel that needs test, multiple different test rate, the transmission number-of-packet of each speed lower bolster wireless network RF receiving/transmission device, the scope of receiving sensitivity, wireless network RF receiving/transmission device to be tested and receive the speed of replying behind the packet of assigned rate, and minimum receiving sensitivity passes through standard under each speed;
Step s2, described control device are controlled the wireless network data bag that described template wireless network RF receiving/transmission device sends selected channel, selected signal strength signal intensity and selected speed, and the quantity of described packet is the number-of-packet that described template wireless network RF receiving/transmission device sends under the present rate that presets in the described control device;
The speed of replying of the present rate that each packet that step s3, described wireless network RF receiving/transmission device to be tested receive all presets according to described control device sends to described template wireless network RF receiving/transmission device and replys;
Step s4, described template wireless network RF receiving/transmission device receive replying of described wireless network RF receiving/transmission device transmission to be tested;
Under step s5, the described template wireless network RF receiving/transmission device record current demand signal intensity, current channel should present rate send, the number-of-packet that described wireless network RF receiving/transmission device to be tested is received, and calculate packet loss:
Step s6, described template wireless network RF receiving/transmission device transmit under this current demand signal intensity the packet loss of current channel under present rate to described control device;
Step s7, the packet loss that receives such as control device pass through standard by the receiving sensitivity that presets, then control described template wireless network RF receiving/transmission device by described control device and reduce channel strength, re-execute step s2 step s6, until the packet loss that control device receives can not pass through standard by the receiving sensitivity that presets, and can surpass the standard that presets by the receiving sensitivity that the presets lowest channel intensity by the described template wireless network RF receiving/transmission device of standard, then this test is passed through;
Step s8, described control device are controlled described template wireless network RF receiving/transmission device and are changed test rate, and repeating step s2 is to step s7, until all preset all tested mistakes of speed under the current channel;
The described control device of step 9. control is controlled described template wireless network RF receiving/transmission device and is changed test channel, and repeating step s2 presets all tested mistakes of channel to step s8 until work as all.
Preferably, the computational methods of described packet loss are, the wireless network data bag sum that the wireless network data bag sum that described template wireless network RF receiving/transmission device sends sends divided by described template wireless network RF receiving/transmission device deducts the poor of wireless network data bag number that described wireless network RF receiving/transmission device to be tested receives.
The beneficial effect of technique scheme is:
Utilize template wireless network RF receiving/transmission device to carry out RF calibration and test, can reduce the usage quantity of RF instrumentation, save equipment investment and improve production capacity,, can customize by the change software function practical function degree of depth based on PC with timed unit.
Description of drawings
Fig. 1 is the building-block of logic of the embodiment of a kind of wireless network RF calibration of the present invention and test macro;
Fig. 2 is the FB(flow block) of the embodiment of a kind of wireless network RF calibration of the present invention and method of testing;
Fig. 3 is the FB(flow block) of the embodiment of a kind of wireless network radio frequency test method of the present invention.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments, but not as limiting to the invention.
The embodiment of a kind of wireless network RF calibration and test macro as shown in Figure 1, wherein, comprise wireless network RF receiving/transmission device to be tested, debug the control device that makes parameters template wireless network RF receiving/transmission device up to standard and be used for controlling wireless network transceiving device to be tested and template wireless network RF receiving/transmission device through calibration, the identical equipment of the general selection of template wireless network RF receiving/transmission device and wireless network RF receiving/transmission device to be tested, its difference only is that template wireless network RF receiving/transmission device makes parameters up to standard through the calibration debugging; The radio-frequency receiving-transmitting end of wireless network RF receiving/transmission device to be tested is connected by the radio-frequency receiving-transmitting end of feeder line with template wireless network RF receiving/transmission device; Control device is connected respectively with the data terminal of wireless network RF receiving/transmission device to be tested and the data terminal of template wireless network transceiving device by netting twine.Control device is by LAN controlled pallet wireless network RF receiving/transmission device and wireless network RF receiving/transmission device to be tested, need not special connection line, and highly versatile.
On the technique scheme basis, further, be connected with signal attenuation device between the radio-frequency receiving-transmitting end of the radio-frequency receiving-transmitting end of wireless network RF receiving/transmission device to be tested and template wireless network RF receiving/transmission device.The purpose of signalization attenuating device is to prevent the excessive damage RF receiving/transmission device of signal strength signal intensity.
On the technique scheme basis, further, control device is connected respectively with the data terminal of wireless network RF receiving/transmission device to be tested and the data terminal of template wireless network transceiving device by signal exchanging apparatus.Signal exchanging apparatus can be switch or router, can select signal exchanging apparatus according to whole topology of networks and scale.
On the technique scheme basis, further, control device is the PC that specific software is installed.
As shown in Figure 2, also comprise a kind of wireless network RF calibration and method of testing in the embodiments of the invention, wherein, comprise above-mentioned wireless network RF calibration and test macro, specifically comprise the steps,
Preset step a, the control device channel, multiple different test rate, transmitted power, the differences under the different test rate that need test the test the speed standard of passing through of EVM value under received RF signal strength criterion under the rate and the different rate that tests the speed of transmission bag number, the difference of wireless network radio frequency gimmick equipment to be tested under the rate that tests the speed;
Step b, control device are controlled wireless network RF receiving/transmission device to be tested by selected channel, carry out radio-frequency transmissions with the test rate that presets in the control device;
Step c, template wireless network RF receiving/transmission device receive wireless network RF receiving/transmission device to be tested and send radiofrequency signal, and the radio-frequency (RF) signal strength result who receives is back to control device;
Steps d, control device are with received RF signal strength criterion under the radio-frequency (RF) signal strength result who receives and the present rate that presets relatively, and adjust the transmitting power of wireless network RF receiving/transmission device to be tested according to comparative result, until the signal strength signal intensity that template wireless network RF receiving/transmission device receives meets received RF signal strength criterion under the present rate that presets in the control device.Control device control wireless network RF receiving/transmission device to be tested with current transmit power as the target transmit power of current channel under lower front speed;
Step e, repeating step b are to steps d, until all channels that preset in the control device are all determined target transmit power under all test rates;
Step f, control device are controlled the wireless network data bag that wireless network RF receiving/transmission device one target power to be tested sends selected channel, selected speed;
Step g, template wireless network RF receiving/transmission device receive the EVM value of calculating behind the wireless network data bag under the present rate, and result of calculation is sent to control device;
Step h, control device pass through standard relatively with the EVM value under the result of calculation of receiving and the present rate of presetting, judge whether wireless network RF receiving/transmission device to be tested can pass through this test;
Step I, repeating step f be to step h, until the equal tested mistake of the EVM value of all channels that preset in the control device under all test rates.
As shown in Figure 3, also comprise a kind of wireless network radio frequency test method in the embodiments of the invention, wherein, comprise above-mentioned wireless network RF calibration and test macro, specifically comprise the steps,
Step s1, control device preset the channel that needs test, multiple different test rate, the transmission number-of-packet of each speed lower bolster wireless network RF receiving/transmission device, the scope of receiving sensitivity, wireless network RF receiving/transmission device to be tested and receive the speed of replying behind the packet of assigned rate, and minimum receiving sensitivity passes through standard under each speed;
Step s2, control device control template wireless network RF receiving/transmission device sends the wireless network data bag of selected channel, selected signal strength signal intensity and selected speed, and the quantity of packet is the number-of-packet that the present rate lower bolster wireless network RF receiving/transmission device that presets in the control device sends;
The speed of replying of the present rate that each packet that step s3, wireless network RF receiving/transmission device to be tested receive all presets according to control device sends to template wireless network RF receiving/transmission device and replys;
Step s4, template wireless network RF receiving/transmission device receive replying of wireless network RF receiving/transmission device transmission to be tested;
Under step s5, the template wireless network RF receiving/transmission device record current demand signal intensity, current channel should present rate send, the number-of-packet that wireless network RF receiving/transmission device to be tested is received, and calculate packet loss:
Step s6, template wireless network RF receiving/transmission device transmit under this current demand signal intensity the packet loss of current channel under present rate to control device;
Step s7, the packet loss that receives such as control device pass through standard by the receiving sensitivity that presets, then reduce channel strength by control device control template wireless network RF receiving/transmission device, re-execute step s2 step s6, until the packet loss that control device receives can not pass through standard by the receiving sensitivity that presets, and can surpass the standard that presets by the receiving sensitivity that the presets lowest channel intensity by the template wireless network RF receiving/transmission device of standard, then this test is passed through;
Step s8, control device control template wireless network RF receiving/transmission device change test rate, and repeating step s2 is to step s7, until all preset all tested mistakes of speed under the current channel;
Step 9. control control device control template wireless network RF receiving/transmission device changes test channel, and repeating step s2 presets all tested mistakes of channel to step s8 until work as all.
On the technique scheme basis, further, the computational methods of packet loss are, the wireless network data bag sum that the wireless network data bag sum that template wireless network RF receiving/transmission device sends sends divided by template wireless network RF receiving/transmission device deducts the poor of wireless network data bag number that wireless network RF receiving/transmission device to be tested receives.
The above only is preferred embodiment of the present invention; be not so restriction embodiments of the present invention and protection range; to those skilled in the art; should recognize that being equal to that all utilizations specification of the present invention and diagramatic content done replace and the resulting scheme of apparent variation, all should be included in protection scope of the present invention.
Claims (7)
1. a wireless network RF calibration and test macro, it is characterized in that, comprise wireless network RF receiving/transmission device to be tested, debug the control device that makes parameters template wireless network RF receiving/transmission device up to standard and be used for controlling wireless network transceiving device to be tested and template wireless network RF receiving/transmission device through calibration;
The radio-frequency receiving-transmitting end of described wireless network RF receiving/transmission device to be tested is connected by the radio-frequency receiving-transmitting end of feeder line with described template wireless network RF receiving/transmission device;
Described control device is connected respectively with the data terminal of described wireless network RF receiving/transmission device to be tested and the data terminal of described template wireless network transceiving device by netting twine.
2. as claimed in claim 1 wireless network RF calibration and test macro, it is characterized in that, be connected with signal attenuation device between the radio-frequency receiving-transmitting end of the radio-frequency receiving-transmitting end of described wireless network RF receiving/transmission device to be tested and described template wireless network RF receiving/transmission device.
3. as claimed in claim 1 wireless network RF calibration and test macro, it is characterized in that, described control device is connected respectively with the data terminal of described wireless network RF receiving/transmission device to be tested and the data terminal of described template wireless network transceiving device by signal exchanging apparatus.
4. as claimed in claim 1 wireless network RF calibration and test macro is characterized in that, described control device is the PC that specific software is installed.
5. a wireless network RF calibration and method of testing is characterized in that, comprise such as wireless network RF calibration and test macro as described in arbitrary among the claim 1-4, specifically comprise the steps,
Preset step a, described the control device channel, multiple different test rate, transmitted power, the differences under the different test rate that need test the test the speed standard of passing through of EVM value under received RF signal strength criterion under the rate and the different rate that tests the speed of transmission bag number, the difference of wireless network radio frequency gimmick equipment to be tested under the rate that tests the speed;
Step b, described control device are controlled described wireless network RF receiving/transmission device to be tested by selected channel, carry out radio-frequency transmissions with the test rate that presets in the described control device;
Step c, described template wireless network RF receiving/transmission device receive described wireless network RF receiving/transmission device to be tested and send radiofrequency signal, and the radio-frequency (RF) signal strength result who receives is back to described control device;
Steps d, described control device are with received RF signal strength criterion under the radio-frequency (RF) signal strength result who receives and the present rate that presets relatively, and adjust the transmitting power of described wireless network RF receiving/transmission device to be tested according to comparative result, until the signal strength signal intensity that described template wireless network RF receiving/transmission device receives meets received RF signal strength criterion under the present rate that presets in the described control device;
Described control device control described wireless network RF receiving/transmission device to be tested with current transmit power as the target transmit power of current channel under lower front speed;
Step e, repeating step b are to steps d, until all channels that preset in the described control device are all determined target transmit power under all test rates;
Step f, described control device are controlled the wireless network data bag that described wireless network RF receiving/transmission device one target power to be tested sends selected channel, selected speed;
Step g, described template wireless network RF receiving/transmission device receive the EVM value of calculating behind the wireless network data bag under the present rate, and result of calculation is sent to described control device;
Step h, described control device pass through standard relatively with the EVM value under the result of calculation of receiving and the present rate of presetting, judge whether described wireless network RF receiving/transmission device to be tested can pass through this test;
Step I, repeating step f be to step h, until the equal tested mistake of the EVM value of all channels that preset in the described control device under all test rates.
6. a wireless network radio frequency test method is characterized in that, comprises such as wireless network RF calibration and test macro as described in arbitrary among the claim 1-4, specifically comprise the steps,
Step s1, described control device preset the channel that needs test, multiple different test rate, the transmission number-of-packet of each speed lower bolster wireless network RF receiving/transmission device, the scope of receiving sensitivity, wireless network RF receiving/transmission device to be tested and receive the speed of replying behind the packet of assigned rate, and minimum receiving sensitivity passes through standard under each speed;
Step s2, described control device are controlled the wireless network data bag that described template wireless network RF receiving/transmission device sends selected channel, selected signal strength signal intensity and selected speed, and the quantity of described packet is the number-of-packet that described template wireless network RF receiving/transmission device sends under the present rate that presets in the described control device;
The speed of replying of the present rate that each packet that step s3, described wireless network RF receiving/transmission device to be tested receive all presets according to described control device sends to described template wireless network RF receiving/transmission device and replys;
Step s4, described template wireless network RF receiving/transmission device receive replying of described wireless network RF receiving/transmission device transmission to be tested;
Under step s5, the described template wireless network RF receiving/transmission device record current demand signal intensity, current channel should present rate send, the number-of-packet that described wireless network RF receiving/transmission device to be tested is received, and calculate packet loss:
Step s6, described template wireless network RF receiving/transmission device transmit under this current demand signal intensity the packet loss of current channel under present rate to described control device;
Step s7, the packet loss that receives such as control device pass through standard by the receiving sensitivity that presets, then control described template wireless network RF receiving/transmission device by described control device and reduce channel strength, re-execute step s2 step s6, until the packet loss that control device receives can not pass through standard by the receiving sensitivity that presets, and can surpass the standard that presets by the receiving sensitivity that the presets lowest channel intensity by the described template wireless network RF receiving/transmission device of standard, then this test is passed through;
Step s8, described control device are controlled described template wireless network RF receiving/transmission device and are changed test rate, and repeating step s2 is to step s7, until all preset all tested mistakes of speed under the current channel;
The described control device of step 9. control is controlled described template wireless network RF receiving/transmission device and is changed test channel, and repeating step s2 presets all tested mistakes of channel to step s8 until work as all.
7. wireless network radio frequency test method as claimed in claim 5, it is characterized in that, the computational methods of described packet loss are, the wireless network data bag sum that the wireless network data bag sum that described template wireless network RF receiving/transmission device sends sends divided by described template wireless network RF receiving/transmission device deducts the poor of wireless network data bag number that described wireless network RF receiving/transmission device to be tested receives.
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| CN111585670A (en) * | 2020-04-24 | 2020-08-25 | 惠州拓邦电气技术有限公司 | Detection method and detection system of wireless detection system |
| CN112040439A (en) * | 2020-07-27 | 2020-12-04 | 深圳市金溢科技股份有限公司 | OBU radio frequency parameter calibration method, OBU device, radio frequency device and system |
| CN112040439B (en) * | 2020-07-27 | 2024-05-31 | 深圳市金溢科技股份有限公司 | OBU radio frequency parameter calibration method, OBU device, radio frequency device and system |
| CN112350784A (en) * | 2020-09-21 | 2021-02-09 | 宇龙计算机通信科技(深圳)有限公司 | WiFi module calibration method and device, storage medium and electronic equipment |
| CN112821965A (en) * | 2021-01-06 | 2021-05-18 | 深圳市精泰达科技有限公司 | WIFI radio frequency test system and method |
| CN115225541A (en) * | 2022-05-12 | 2022-10-21 | 中国电子技术标准化研究院 | Calibration method and device for self-organizing network test system |
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