CN115623523B - Multifunctional test method and system for wireless performance of WiFi equipment - Google Patents
Multifunctional test method and system for wireless performance of WiFi equipment Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W24/06—Testing, supervising or monitoring using simulated traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a multifunctional test method and a multifunctional test system for wireless performance of WiFi equipment, relates to the technical field of WiFi test, and solves the technical problems that the WiFi equipment is low in test efficiency and accuracy of test results is influenced. The method comprises the following steps: arranging a controllable rotating table in the full-electric wave darkroom, and placing or fixing the WiFi equipment to be tested on the controllable rotating table; arranging a probe antenna in the full-electric wave darkroom, and connecting the first programmable attenuator and the second programmable attenuator with the probe antenna; the control host configures parameters of the first AP/terminal simulator and the second AP/terminal simulator; testing the WiFi equipment to be tested through the first AP/terminal simulator and the second AP/terminal simulator; and adjusting the direction of the controllable rotating platform, and testing the WiFi equipment to be tested at different angles. The method realizes the test of various wireless functions of the WiFi equipment through the cooperation of the first AP/terminal simulator and the second AP/terminal simulator, and improves the test efficiency and accuracy.
Description
Technical Field
The invention relates to the technical field of WiFi test, in particular to a multifunctional test method and a multifunctional test system for wireless performance of WiFi equipment.
Background
With the rapid development of information technologies such as internet of things, cloud computing and artificial intelligence, smart home products, wearable products and the like connected by wireless technologies such as WiFi are widely applied in the market. The test evaluation of the wireless communication performance of the WiFi equipment is a key factor for determining whether the WiFi equipment can be listed and the product is good or bad.
The wireless performance test of the WiFi device mainly includes power/sensitivity, throughput (single-channel/MIMO) (multiple-in multiple-out), a scene simulation test, and the like, however, in the market, the power/sensitivity test, the throughput test, and the interference test of the WiFi device all need to be performed through a separate test system and test method, which results in low efficiency, and cannot ensure spatial attenuation of the test and environmental consistency, thereby affecting the accuracy of the test result.
In the process of implementing the invention, the inventor finds that at least the following problems exist in the prior art:
the functional test of the wireless performance of the WiFi equipment is generally carried out by depending on a plurality of sets of test systems and methods, the test efficiency is low, and the accuracy of the test result is also influenced.
Disclosure of Invention
The invention aims to provide a multifunctional test method and a multifunctional test system for wireless performance of WiFi equipment, and aims to solve the technical problems that in the prior art, the function test for the wireless performance of the WiFi equipment is generally carried out by depending on a plurality of sets of test systems and methods, the test efficiency is low, and the accuracy of test results is influenced. The technical effects that can be produced by the preferred technical scheme of the technical schemes provided by the invention are described in detail in the following.
In order to realize the purpose, the invention provides the following technical scheme:
the invention provides a multifunctional test method for wireless performance of WiFi equipment, which comprises the following steps:
s100: arranging a controllable rotating platform in a full-electric-wave darkroom, and placing or fixing the WiFi equipment to be tested on the controllable rotating platform, wherein the WiFi equipment to be tested is positioned in the dead zone range of the full-electric-wave darkroom; s200: arranging a probe antenna in the full-electric-wave darkroom, connecting a first programmable attenuator and a second programmable attenuator with the probe antenna, and respectively connecting a first AP/terminal simulator and a second AP/terminal simulator with the first programmable attenuator and the second programmable attenuator; s300: the control host configures parameters of a first AP/terminal simulator and a second AP/terminal simulator, and the first AP/terminal simulator is in communication connection with the WiFi equipment to be tested; s400: testing the WiFi equipment to be tested through the first AP/terminal simulator and the second AP/terminal simulator, wherein the testing contents comprise a throughput test under the condition of no interference, a throughput test under the condition of interference and a roaming performance test; s500: adjusting the direction of the controllable rotating platform, and testing the WiFi equipment to be tested at different angles;
in S400, the throughput testing under the interference condition includes the following steps:
s410b: the control host configures parameters of the second AP/terminal simulator, so that the second AP/terminal simulator sends an interference signal, and the second program-controlled attenuator is adjusted to enable the intensity of the interference signal to reach a preset value; s420b: acquiring a transmission rate parameter and a signal intensity parameter of the WiFi equipment to be tested; s430b: adjusting the intensity of the interference signal through the second programmable attenuator, and testing the transmission rate parameter and the signal intensity parameter of the WiFi equipment to be tested under different interference signal intensities;
in S410b, the preset value of the second programmable attenuator is the attenuation value of the first programmable attenuator plus 3+ log (1 + 10) -7 and/P) +5 (1-S/B), wherein P is the signal strength of the signal sent by the first AP/terminal simulator at the WiFi device to be tested, S is the frequency interval of an interference signal and a connection signal, and B is the bandwidth of the connection signal.
Preferably, in S400, the throughput test under interference-free condition includes the following steps:
s410a: the control host controls the first AP/terminal simulator to start signal transmission with the WiFi equipment to be tested; s420a: acquiring a transmission rate parameter and a signal intensity parameter of the WiFi equipment to be tested; s430a: and adjusting the signal attenuation intensity through the first program-controlled attenuator, and testing the transmission rate parameters and the signal intensity parameters of the WiFi equipment to be tested under different signal intensities.
Preferably, in S400, the roaming performance test includes the following steps:
s410c: the control host sets the same parameters for the first AP/terminal simulator and the second AP/terminal simulator, and adjusts the second programmable attenuator to be an attenuation preset value D; s420c: the control host controls attenuation values of the first programmable attenuator and the second programmable attenuator, gradually increases the signal attenuation value of the first programmable attenuator, and gradually decreases the signal attenuation value of the second programmable attenuator; s430c: and after the tested WiFi equipment is disconnected with the first AP/terminal simulator and is connected with the second AP/terminal simulator, acquiring a roaming skip time parameter and a roaming success rate parameter.
Preferably, in S420c, the signal attenuation value of the first programmable attenuator is-20 log [ (100-t)/100 ], the signal attenuation value of the second programmable attenuator is D-20log (1 + t), where t is time and is second, and D is the preset attenuation value of the second programmable attenuator.
Preferably, the preset attenuation value D of the second programmable attenuator is 40dB.
A multifunctional test system for wireless performance of WiFi equipment is used for operating any one of the above multifunctional test methods for wireless performance of WiFi equipment, and comprises a full-electric wave darkroom, a controllable rotating platform, a control host, a probe antenna, a first program-controlled attenuator, a second program-controlled attenuator, a first AP/terminal simulator and a second AP/terminal simulator; the controllable rotating platform is arranged inside the full-electric wave darkroom; the WiFi equipment to be tested is placed or fixed on the controllable rotating platform; the first programmable attenuator and the second programmable attenuator are connected with the probe antenna through a radio frequency antenna; the first programmable attenuator is connected with the first AP/terminal simulator, and the second programmable attenuator is connected with the second AP/terminal simulator; and the control host is connected with the first AP/terminal simulator and the second AP/terminal simulator.
Preferably, the first AP/terminal simulator and the second AP/terminal simulator both support at least 2 × 2mimo transmission technology, the first programmable attenuator supports at least two radio frequency lines, and the number of the probe antennas is at least 2.
Preferably, the minimum step value of signal attenuation adjustment of the first program-controlled attenuator and the second program-controlled attenuator is less than 5dB, the inner wall of the full anechoic chamber is provided with wave-absorbing materials, and the quiet zone is larger than 10cm.
One of the technical schemes of the invention has the following advantages or beneficial effects:
the method adopts a full-electric-wave darkroom for testing, instead of a coupling box, so that the testing environment is closed and clean, and the testing repeatability is high; the design of the probe antenna and the rotatable turntable can realize the test of the transmission performance of the WiFi equipment to be tested in different directions; the performance test of the WiFi equipment to be tested under different field intensity conditions (including a strong signal environment, a weak signal environment and a limit weak signal environment) is realized through the programmable attenuator; the first AP/terminal simulator and the second AP/terminal simulator are matched with each other to test the throughput and the roaming performance under the interference condition, so that the test of multiple wireless functions of the WiFi equipment is realized, the test efficiency is improved, the test space attenuation and the environment consistency are ensured, and the accuracy of the test result is ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
fig. 1 is a flowchart of a multi-functional testing method for wireless performance of a WiFi device according to an embodiment of the present invention;
FIG. 2 is a flow chart of a throughput test under a non-interference condition according to a first embodiment of the present invention;
FIG. 3 is a flow chart of a throughput test under interference conditions in accordance with one embodiment of the present invention;
FIG. 4 is a flowchart illustrating a roaming performance test according to an embodiment of the invention;
FIG. 5 is a schematic diagram of a multifunctional test system for wireless performance of a WiFi device in accordance with an embodiment of the present invention;
in the figure: 1. a full-electric wave darkroom; 2. a controllable rotating table; 3. a control host; 4. a probe antenna; 5. a first programmable attenuator; 6. a second programmable attenuator; 7. a first AP/terminal emulator; 8. a second AP/terminal emulator; 9. a shielding box.
Description of the preferred embodiment
In order that the objects, aspects and advantages of the present invention will become more apparent, various exemplary embodiments will be described below with reference to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various exemplary embodiments in which the invention may be practiced. The same numbers in different drawings identify the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. It is to be understood that they are merely examples of processes, methods, apparatus, etc. consistent with certain aspects of the present disclosure as detailed in the appended claims, and that other embodiments may be used or structural and functional modifications may be made to the embodiments set forth herein without departing from the scope and spirit of the present disclosure.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," and the like are used in the orientations and positional relationships illustrated in the accompanying drawings for the purpose of facilitating the description of the present invention and simplifying the description, and do not indicate or imply that the elements so referred to must have a particular orientation, be constructed in a particular orientation, and be operated. The terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. The term "plurality" means two or more. The terms "coupled" and "connected" are to be construed broadly and may include, for example, a fixed connection, a removable connection, a unitary connection, a mechanical connection, an electrical connection, a communicative connection, a direct connection, an indirect connection via intermediate media, and may include, but are not limited to, a connection between two elements or an interactive relationship between two elements. The term "and/or" includes any and all combinations of one or more of the associated listed items. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In order to explain the technical solution of the present invention, the following description is made by way of specific examples, which only show the relevant portions of the embodiments of the present invention.
Examples
As shown in fig. 1, the present invention provides a multifunctional test method for wireless performance of WiFi devices, comprising the following steps. S100: set up controllable revolving stage 2 in full anechoic chamber 1, will be surveyed wiFi equipment 10 and place or be fixed in on controllable revolving stage 2, it is the equipment that has wiFi communication function to be surveyed wiFi equipment 10, for example cell-phone, the panel computer, notebook etc., because the wiFi communication of being surveyed wiFi equipment 10 is gone on through wiFi antenna module, the directionality has, controllable revolving stage 2 drives to be surveyed the wiFi equipment 10 rotation and can record the wiFi communication performance of being surveyed wiFi equipment 10 in equidirectional, preferably controllable revolving stage 2 can also go up and down, thereby can obtain the comparison test result of being surveyed wiFi equipment 10 at co-altitude not, can realize more comprehensive test to being surveyed wiFi equipment 10, it is located the quiet zone scope of full anechoic chamber 1 to be surveyed wiFi equipment, ensure that the test in-process can not receive the interference. S200: the method comprises the steps that a probe antenna 4 is arranged in a full-wave darkroom 1, the distance between the probe antenna 4 and a WiFi device 10 to be tested is set according to test requirements, a first programmable attenuator 5 and a second programmable attenuator 6 are connected with the probe antenna 4, the first programmable attenuator 5 and the second programmable attenuator 6 are used for constructing a weak signal environment in the full-wave darkroom 1, different test environments can be simulated conveniently, a first AP/terminal simulator 7 and a second AP/terminal simulator 8 are connected with the first programmable attenuator 5 and the second programmable attenuator 6 respectively, the first AP/terminal simulator 7 and the second AP/terminal simulator 8 are terminal simulators or routers, and the terminal simulators can simulate functions and behaviors of actual terminal devices (here, routers) and are used for generating wireless WiFi signals. S300: the control host 3 configures parameters of the first AP/terminal simulator 7 and the second AP/terminal simulator 8, configures different parameters of the first AP/terminal simulator 7 and the second AP/terminal simulator 8 according to different test contents, and performs communication connection between the first AP/terminal simulator 7 and the WiFi device 10 to be tested, specifically, performs signal connection between the first AP/terminal simulator 7 and the WiFi device 10 to be tested in a probe antenna OTA coupling mode. S400: and testing the WiFi equipment to be tested through the first AP/terminal simulator 7 and the second AP/terminal simulator 8, wherein the test contents comprise a throughput test under a non-interference condition, a throughput test under an interference condition and a roaming performance test. The performance tests of different functions of the WiFi device 10 to be tested can be realized through the cooperation of the first AP/terminal simulator 7 and the second AP/terminal simulator 8, and the test efficiency is greatly improved. S500: the direction of the controllable rotating platform 2 is adjusted, and the WiFi equipment to be tested is tested at different angles, so that multiple groups of different test data can be obtained, and the comprehensive test on the WiFi equipment to be tested 10 is realized. The method adopts a full-electric wave darkroom for testing, but not a coupling box, so that the testing environment is closed and clean, and the testing repeatability is high; the design of the probe antenna and the rotatable turntable can realize the test of the transmission performance of the tested WiFi equipment in different directions; the performance test of the WiFi equipment to be tested under different field intensity conditions (including a strong signal environment, a weak signal environment and a limit weak signal environment) is realized through the programmable attenuator; the first AP/terminal simulator and the second AP/terminal simulator are matched with each other to test the throughput and the roaming performance under the interference condition, so that the test of multiple wireless functions of the WiFi equipment is realized, the test efficiency is improved, the test space attenuation and the environment consistency are ensured, and the accuracy of the test result is ensured.
As an alternative embodiment, as shown in fig. 2, in S400, the throughput test under the non-interference condition includes the following steps. S410a: the control host 3 controls the first AP/terminal simulator 7 to start signal transmission with the WiFi equipment 10 to be tested, and the throughput test can be started after the signal transmission is carried out; s420a: acquiring a transmission rate parameter and a signal strength parameter of the WiFi device 10 to be tested, where the transmission rate and the corresponding signal strength are main indexes of a throughput test, and certainly, other throughput test indexes may also be added according to actual test needs; s430a: and adjusting the signal attenuation intensity through the first programmable attenuator 5, and testing the transmission rate parameters and the signal intensity parameters of the tested WiFi equipment 10 under different signal intensities. So that more comprehensive throughput performance data of the tested WiFi device 10 can be obtained.
As an alternative implementation, as shown in fig. 3, in S400, the throughput testing under the interference condition includes the following steps. S410b: the control host 3 configures parameters of the second AP/terminal simulator 8, so that the second AP/terminal simulator 8 sends out an interference signal, and the second programmable attenuator 6 is adjusted to enable the intensity of the interference signal to reach a preset value; s420b: acquiring a transmission rate parameter and a signal strength parameter of the WiFi device 10 to be tested, wherein the transmission rate parameter and the signal strength parameter are test results when signals are interfered; s430b: the strength of the interference signal is adjusted through the second programmable attenuator 6, and the transmission rate parameter and the signal strength parameter of the tested WiFi device 10 under different interference signal strengths are tested, so that the throughput data of the tested WiFi device 10 under different strength interference signals can be obtained, and the test result is more comprehensive. When the throughput is tested under the interference condition, a plurality of groups of AP/terminal simulators and program-controlled attenuators can be additionally arranged, so that the throughput data of the WiFi device 10 to be tested under a plurality of interference signals with the same or different intensities can be obtained, the specific number and the generation positions of the interference signals are set according to the test requirements, and the more real simulation of the actual scene can be realized.
As an optional implementation manner, in S410b, the preset attenuation value of the second programmable attenuator 6 is the attenuation value of the first programmable attenuator 5 plus 3+ log (1 + 10) -7 P) +5 × (1-S/B), where P is the signal strength of the signal sent by the first AP/terminal simulator 7 at the WiFi device under test 10, and is given as w, S is the frequency interval between the interference signal and the connection signal, and is given as MHz, and B is the bandwidth of the connection signal, and is given as MHz, by this formula, it is possible to better simulate the real scene that the WiFi device under test 10 is moving, away from one AP/terminal simulator, and close to another AP/terminal simulator, while the AP/terminal simulator remains still.
As an alternative embodiment, in S400, as shown in fig. 4, the roaming performance test includes the following steps. S410c: the control host 3 sets the same parameters including the user name and the password to the first AP/terminal simulator 7 and the second AP/terminal simulator 8, so that the tested WiFi device 10 can perform roaming switching on the connection between the first AP/terminal simulator 7 and the second AP/terminal simulator 8, and adjust the second programmable attenuator 6 to the preset attenuation value D. S420c: the control host 3 controls the attenuation values of the first programmable attenuator 5 and the second programmable attenuator 6, and gradually increases the signal attenuation value of the first programmable attenuator 5, so that the signal intensity of the first AP/terminal simulator 7 is gradually weakened, when the signal attenuation value of the first programmable attenuator 5 reaches a certain level, the measured WiFi device 10 cannot be connected with the first AP/terminal simulator 7 any more, so that the connection is automatically disconnected, the signal attenuation value of the second programmable attenuator 6 is gradually reduced, and when the signal attenuation value of the second programmable attenuator 6 is reduced, the signal intensity of the second AP/terminal simulator 8 is gradually increased, so that the measured WiFi device 10 is automatically connected with the measured WiFi device. S430c: after the tested WiFi device 10 is disconnected from the first AP/terminal simulator 7 and establishes connection with the second AP/terminal simulator 8, the roaming jump time parameter and the roaming success rate parameter are obtained, and the connection switching between the tested WiFi device 10 and the first AP/terminal simulator 7 realizes roaming, and certainly, other roaming related parameters can be obtained according to needs, thereby realizing the roaming performance test of the tested WiFi device 10.
As an optional implementation manner, in S420c, the signal attenuation value of the first programmable attenuator 5 is-20 log [ (100-t)/100 ], and the signal attenuation value of the second programmable attenuator 6 is D-20log (1 + t), where t is time and is unit of second, and D is the preset attenuation value of the second programmable attenuator 6. The preset attenuation value D of the second programmable attenuator 6 is 40dB. The preset value of attenuation provides a reasonable starting value so that the smaller interference is negligible, but it is also possible to start with a smaller preset value of attenuation and increase it stepwise, but it wastes test time. The test time can be reasonably reduced by starting with the preset value of 40dB, and the test efficiency is improved.
The embodiment is only a specific example and does not indicate such an implementation of the invention.
Examples
The invention also provides an embodiment of the multifunctional test system for the wireless performance of the WiFi equipment, which is used for operating the multifunctional test method for the wireless performance of the WiFi equipment in the first embodiment. As shown in fig. 5, the system comprises a full anechoic chamber 1, a controllable rotating platform 2, a control host 3, a probe antenna 4, a first programmable attenuator 5, a second programmable attenuator 6, a first AP/terminal simulator 7 and a second AP/terminal simulator 8. The first programmable attenuator 5, the first AP/terminal simulator 7, the second programmable attenuator 6 and the second AP/terminal simulator 8 are respectively positioned in different shielding boxes 9, the first AP/terminal simulator 7 and the second AP/terminal simulator 8 can test parameters such as transmission rate, error rate and the like, and can also be replaced by real network equipment such as a real router, AP and the like or terminal equipment such as a network card, a wireless terminal and the like. Controllable revolving stage 2 sets up in the inside of full anechoic chamber 1, and controllable revolving stage 2 can realize the position and the direction regulation and control to being surveyed wiFi equipment 10 to can acquire the characteristic of being surveyed wiFi equipment 10 in the equidirectional, test function is more comprehensive, and controllable revolving stage 2's turned angle both can be manual, also can be automatic, selects as required. On being surveyed wiFi equipment 10 and placing or being fixed in controllable revolving stage 2, preferably set up the fixed bolster on controllable revolving stage 2 and fix being surveyed wiFi equipment 10, surveyed wiFi equipment 10 emergence motion when can avoiding controllable revolving stage 2 to rotate to the influence is surveyed the accuracy of wiFi equipment 10 in equidirectional test result. The first programmable attenuator 5 and the second programmable attenuator 6 are connected with the probe antenna 4 through a radio frequency antenna, and the first programmable attenuator 5 is used for constructing a weak signal environment in the full-wave darkroom 1 and realizing a critical state of the WiFi device 10 to be tested, namely a state when the throughput just reaches 0. The first program-controlled attenuator 5 and the second program-controlled attenuator 6 can also be replaced by a channel emulator for wireless channel emulation, and the probe antenna 4 can adopt dual polarization or single polarization. The first programmable attenuator 5 is connected with a first AP/terminal simulator 7, and the second programmable attenuator 6 is connected with a second AP/terminal simulator 8; the control host 3 is connected with the first AP/terminal simulator 7 and the second AP/terminal simulator 8 in a wired or wireless connection mode, and is used for configuring parameters, so that throughput testing under an interference-free condition, throughput testing under an interference-free condition and roaming performance testing are achieved, and the control host 3 can be processing equipment such as a notebook computer, a desktop all-in-one machine and a tablet computer. The system adopts a full-electric-wave darkroom for testing, instead of a coupling box, so that the testing environment is closed and clean, and the testing repeatability is high; the design of the probe antenna and the rotatable turntable can realize the test of the transmission performance of the WiFi equipment to be tested in different directions; the performance test of the tested WiFi equipment 10 under different field intensity conditions (including a strong signal environment, a weak signal environment and a limit weak signal environment) is realized through the programmable attenuator; the first AP/terminal simulator and the second AP/terminal simulator are matched with each other to test the throughput and the roaming performance under the interference condition, so that one set of system realizes the test of multiple wireless functions of the WiFi equipment, the test efficiency is improved, and the accuracy of the test result is also ensured.
As an optional embodiment, each of the first AP/terminal simulator 7 and the second AP/terminal simulator 8 supports at least 2 × 2mimo transmission technology, and specifically, may support 2 × 2mimo, 4 × 4mimo, 6 × 6mimo, 8 × 8mimo, and the like, thereby improving the applicability of the test method, and the first programmable attenuator 5 supports at least two radio frequency lines, and is matched with the MIMO supported by the first AP/terminal simulator 7, and preferably 4 or 8 radio frequency lines. The number of the probe antennas 4 is at least 2, the probe antennas 4 have a certain angle interval with each other, so that a certain isolation degree is provided, a typical angle interval is, for example, 15 degrees, and the specific angle is selected according to the number of the probe antennas 4, and preferably, the plurality of probe antennas 4 are uniformly distributed on the ring. The number of the probe antennas 4 is 2, 4, 6, 8 (8 in fig. 2), and the probe antennas respectively support a 2 x 2mimo test, a 4 x 4MIMO test, a 6 x 6MIMO test, and a 8 x 8MIMO test, so that the MIMO transmission performance test of the WiFi device 10 to be tested is realized, and the applicability of the test method is also improved, and of course, the number of the probe antennas 4 can be set according to the MIMO test requirements.
As an optional implementation manner, the minimum step value of signal attenuation adjustment of the first programmable attenuator 5 and the second programmable attenuator 6 is less than 5dB, so that more accurate operation can be achieved, the inner wall of the all-electric wave darkroom 1 is provided with a wave-absorbing material, so that a test environment is ensured to be sealed and clean, the test repeatability is high, the influence of reflection on a test result is avoided, the accuracy of the test result is ensured, and the quiet zone is greater than 10cm, the quiet zone is an area with weakest indoor reflection interference, in the quiet zone, the ratio of directly-arriving energy to energy reflected from any indoor surface generally exceeds 40dB, and the quiet zone greater than 10cm facilitates arrangement of the tested WiFi device 10.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (8)
1. A multifunctional test method for wireless performance of WiFi equipment is characterized by comprising the following steps:
s100: arranging a controllable rotating platform in a full-electric-wave darkroom, and placing or fixing the WiFi equipment to be tested on the controllable rotating platform, wherein the WiFi equipment to be tested is positioned in the dead zone range of the full-electric-wave darkroom;
s200: arranging a probe antenna in the full-electric-wave darkroom, connecting a first programmable attenuator and a second programmable attenuator with the probe antenna, and respectively connecting a first AP/terminal simulator and a second AP/terminal simulator with the first programmable attenuator and the second programmable attenuator;
s300: the control host configures parameters of a first AP/terminal simulator and a second AP/terminal simulator, and the first AP/terminal simulator is in communication connection with the WiFi equipment to be tested;
s400: testing the WiFi equipment to be tested through the first AP/terminal simulator and the second AP/terminal simulator, wherein the testing contents comprise a throughput test under the condition of no interference, a throughput test under the condition of interference and a roaming performance test;
s500: adjusting the direction of the controllable rotating platform, and testing the WiFi equipment to be tested at different angles;
in S400, the throughput test under the interference condition includes the following steps:
s410b: the control host configures parameters of the second AP/terminal simulator, so that the second AP/terminal simulator sends an interference signal, and the second programmable attenuator is adjusted to enable the intensity of the interference signal to reach a preset value;
s420b: acquiring a transmission rate parameter and a signal intensity parameter of the WiFi equipment to be tested;
s430b: adjusting the intensity of the interference signal through the second programmable attenuator, and testing the transmission rate parameter and the signal intensity parameter of the WiFi equipment to be tested under different interference signal intensities;
in S410b, the preset value of the second programmable attenuator is the attenuation value of the first programmable attenuator plus 3+ log (1 + 10) -7 and/P) +5 (1-S/B), wherein P is the signal strength of the signal sent by the first AP/terminal simulator at the WiFi device to be tested, S is the frequency interval of an interference signal and a connection signal, and B is the bandwidth of the connection signal.
2. The method of claim 1, wherein the step of testing the throughput under interference-free conditions in S400 comprises the steps of:
s410a: the control host controls the first AP/terminal simulator to start signal transmission with the WiFi equipment to be tested;
s420a: acquiring a transmission rate parameter and a signal intensity parameter of the WiFi equipment to be tested;
s430a: and adjusting the signal attenuation intensity through the first programmable attenuator, and testing the transmission rate parameters and the signal intensity parameters of the WiFi equipment to be tested under different signal intensities.
3. The multifunctional testing method for wireless performance of WiFi device of claim 1, characterized in that in S400, roaming performance testing includes the following steps:
s410c: the control host sets the same parameters for the first AP/terminal simulator and the second AP/terminal simulator, and adjusts the second programmable attenuator to be an attenuation preset value D;
s420c: the control host controls attenuation values of the first programmable attenuator and the second programmable attenuator, gradually increases the signal attenuation value of the first programmable attenuator, and gradually decreases the signal attenuation value of the second programmable attenuator;
s430c: and after the tested WiFi equipment is disconnected with the first AP/terminal simulator and is connected with the second AP/terminal simulator, acquiring a roaming jump time parameter and a roaming success rate parameter.
4. The method as claimed in claim 3, wherein in S420c, the signal attenuation value of the first programmable attenuator is-20 log [ (100-t)/100 ], and the signal attenuation value of the second programmable attenuator is D-20log (1 + t), where t is time in seconds and D is the preset attenuation value of the second programmable attenuator.
5. The method of claim 4, wherein the preset attenuation value D of the second programmable attenuator is 40dB.
6. A multifunctional test system for wireless performance of WiFi equipment, which is used for operating the multifunctional test method for wireless performance of WiFi equipment in any one of claims 1-5, and comprises a full anechoic chamber, a controllable rotating platform, a control host, a probe antenna, a first programmable attenuator, a second programmable attenuator, a first AP/terminal simulator and a second AP/terminal simulator; the controllable rotating platform is arranged inside the full-electric wave darkroom; the WiFi equipment to be tested is placed or fixed on the controllable rotating platform; the first programmable attenuator and the second programmable attenuator are connected with the probe antenna through a radio frequency antenna; the first programmable attenuator is connected with the first AP/terminal simulator, and the second programmable attenuator is connected with the second AP/terminal simulator; and the control host is connected with the first AP/terminal simulator and the second AP/terminal simulator.
7. The system of claim 6, wherein the first AP/terminal simulator and the second AP/terminal simulator each support at least 2 x 2mimo transmission, the first programmable attenuator supports at least two rf lines, and the number of probe antennas is at least 2.
8. The system of claim 7, wherein the minimum step value of signal attenuation adjustment of the first programmable attenuator and the second programmable attenuator is less than 5dB, the inner wall of the all-anechoic chamber is provided with a wave-absorbing material, and the dead zone is greater than 10cm.
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