A multi-probe Wi-Fi testing method and system

Abstract

The present invention discloses a multi-probe Wi-Fi testing method and system, comprising a plurality of probes, a plurality of Wi-Fi chip modules, a plurality of Wi-Fi signal monitoring units, and a Wi-Fi testing system host; the Wi-Fi chip modules are connected to the Wi-Fi signal monitoring unit via a USB bus HUB; and the Wi-Fi signal monitoring unit is connected to the Wi-Fi testing system host via an Ethernet local area network. Specifically, the following steps are included: S1, initialization processing; S2, data plane processing; S3, control plane processing; S4, Wi-Fi test process control and test data aggregation processing; the present invention utilizes multiple probes to monitor the Wi-Fi spatial signals of a DUT device from various spatial directions, enabling a more comprehensive assessment of the device's overall Wi-Fi performance than existing technologies that only monitor signals from one direction. After the multi-probe signals are averaged, they become relatively insensitive to antenna position, significantly reducing requirements for the DUT antenna's installation position and the DUT's position in the test box, thereby reducing false positives and missed positives.

Description

Technical Field

[0001] The present invention belongs to the technical field of antenna testing tools, and in particular relates to a multi-probe Wi-Fi testing method and system. Background Art

[0002] Currently, a large number of devices on the market use Wi-Fi for internet access and communication. However, when the device is far from the router or behind a wall, design flaws can lead to frequent disconnections or even inability to connect to the router. Therefore, testing the device's Wi-Fi before shipment is crucial for quality assurance. Currently, most common Wi-Fi testing methods involve placing the device under test (DUT) on an antenna coupling board in a shielded box, then testing it with a Wi-Fi tester, such as the IQ View.

[0003] It is certainly feasible to use a WiFi comprehensive tester to test WiFi, but this test equipment also has its shortcomings: (1) the equipment is very expensive; the test device investment is large; (2) a shielding box is required, and the test environment requirements are high; (3) the antenna installation consistency of the equipment is very high, and a slight deviation in the antenna installation position will cause the test signal to change significantly; using a coupling plate, only one direction can be evaluated for the signal, and sometimes the signal in one direction does not represent the overall WiFi signal, resulting in frequent false positives and false negatives in the test results; (4) when the factory is mass-producing, WiFi testing must use a dedicated fixed-frequency program for testing, cannot be connected to a router, cannot communicate with the DUT through the WiFi network, and requires independent testing processes and test stations, which all lead to a significant increase in factory production costs.

[0004] In response to the shortcomings of current technology, we propose a multi-probe Wi-Fi test method and system with the following objectives: (1) reduce the cost of the test system; (2) reduce the production cost of large-scale production testing in factories; (3) evaluate the Wi-Fi performance of the DUT in multiple spatial directions through spatial multi-probe technology; (4) reduce the test system's sensitivity to the DUT antenna position and test placement, and reduce the test system's false positives and false negatives; (5) enable Wi-Fi communication with the DUT during testing. Summary of the Invention

[0005] The purpose of the present invention is to provide a multi-probe Wi-Fi testing method and system to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a multi-probe Wi-Fi testing method, specifically comprising the following steps:

[0007] S1. Initialization processing:

[0008] Step S11: Load the driver of the wifi chip module;

[0009] Step S12: discover and enable all probes, each probe logically corresponding to a Wi-Fi interface card;

[0010] Step S13: Set all Wi-Fi interface network cards to enter monitor working mode and promisc promiscuous mode;

[0011] Step S14: Setting the working channels of all Wi-Fi interface network cards;

[0012] S2, data plane processing:

[0013] Step S21: Create a socket for receiving messages for each Wi-Fi interface;

[0014] Step S22: Create a thread to receive messages on the socket, i.e., capture packets;

[0015] Step S23: The message contains a radiotap header, including Wi-Fi information, and the transmission mode, working rate, and signal strength information corresponding to the message are parsed from the radiotap protocol header;

[0016] Step S24: According to the test requirements, the working channel, working mode, working rate, and source MAC address are used as filtering conditions to filter out the messages that meet the requirements and record the WiFi information that meets the requirements;

[0017] Step S25: storing the acquired Wi-Fi information in a database for future use;

[0018] Step S26: Go to step S22 and receive messages in a loop until an exit command is received;

[0019] S3, control plane processing: It is used to dynamically change the message filtering conditions according to the test requirements, switch the listening channel control work, and provide a data access interface for the Wi-Fi test system host;

[0020] S4, Wi-Fi test process control and test data summary processing:

[0021] Step S41, test preparation: Before the test, the DUT needs to be connected to the router and placed on the test bench, and then click to start the test;

[0022] Step S42: Determine whether automatic control of the DUT into a specified test mode and packet transmission has been achieved. Specifying the test mode refers to setting the DUT to use a fixed channel, operating mode, and operating rate for data communication. If the test system has achieved an automatic control interface with the DUT, proceed to step S44; if not, proceed to step S43.

[0023] Step S43: Control the DUT through other external means to test the required working channel, working mode, and working rate for data communication, and then continue the test and go to step S45;

[0024] Step S44: automatically controlling the DUT to perform data communication in the required working channel, working mode, and working rate;

[0025] Step S45: Obtain or input the MAC address of the DUT for filtering Wi-Fi message data;

[0026] Step S46: Obtain or input the test channel, working mode, and working rate of the DUT;

[0027] Step S47: Control all Wi-Fi signal monitoring units and use source MAC, working mode, working rate, and channel as packet capture filtering conditions;

[0028] Step S48: Acquire data from all Wi-Fi signal monitoring units, thereby obtaining data from all probes;

[0029] Step S49: logically group the probes according to their spatial distribution, for example, group all probes into one group. Figure 2 Probes 1 to 12 represent omnidirectional integrated signals; all probes in the horizontal section are grouped together, such as Figure 2 Probes 5 to 8 in the figure represent the average horizontal plane signal; the upper horizontal sections are grouped together, such as Figure 2 Probes 1 to 4 in the figure represent the average signal of the upper part of the DUT; the lower horizontal sections are grouped together, such as Figure 2 Probes 9 to 12 in the diagram represent the average signal at the bottom of the DUT. The average signal strength, standard deviation, and other data are then calculated.

[0030] Since Wi-Fi signals may fluctuate or be interfered with, when calculating the signal average, we use mathematical methods based on the normal distribution characteristics of the signal to filter out signal data that is too interfered with or has unreliable signal strength.

[0031] Step S410: Calculate various indicators according to the test standards and determine whether each test item has passed;

[0032] These indicators, such as the signal strength of the probe in a certain direction, the omnidirectional integrated average signal strength, the average signal strength of the horizontal plane, the average signal strength of a certain section, the signal gain of a certain section, etc.

[0033] Step S411: displaying an alarm and archiving the test results;

[0034] Step S412: Determine whether sufficient data has been collected to exit the test automatically or manually. If the test needs to be repeated, go to step S48; otherwise, the test ends.

[0035] The initialization process of step S1 is to enable the Wi-Fi chip module to enter a state of listening to Wi-Fi air messages.

[0036] The data plane processing in step S1 is to cyclically process the reception of Wi-Fi messages and parse Wi-Fi information from the messages.

[0037] The present invention also provides a test system for a multi-probe Wi-Fi test method, comprising a plurality of probes, a plurality of Wi-Fi chip modules, a plurality of Wi-Fi signal monitoring units and a Wi-Fi test system host;

[0038] The wifi chip module is connected to the wifi signal monitoring unit through a USB bus HUB; the wifi signal monitoring unit is connected to the wifi test system host through an Ethernet LAN.

[0039] The probe is a Wi-Fi antenna installed on the test box and is used to receive Wi-Fi physical electrical signals from the DUT from multiple directions;

[0040] The test box is used to install the probe and place the DUT;

[0041] The Wi-Fi chip module is connected to the probe and is used to receive the physical Wi-Fi electrical signals captured by the probe and convert them into Wi-Fi data packets for further analysis of the Wi-Fi information. When selecting a Wi-Fi chip module, you need to choose a chip that supports the monitor function.

[0042] The Wi-Fi signal monitoring unit captures the Wi-Fi data message through the Wi-Fi chip module, and then parses the Wi-Fi message's corresponding transmission signal strength, working channel, working mode, working rate and other basic Wi-Fi special parameters from the message to use as basic test data;

[0043] Several probes, several wifi chip modules and a wifi signal monitoring unit are connected and communicated via a USB bus. The combination of the three is equivalent to an embedded computer with several wifi network cards;

[0044] The Wi-Fi test system host and the Wi-Fi signal monitoring unit are loosely coupled through the Ethernet LAN. It controls all Wi-Fi signal monitoring units, captures the air messages of the specified working channel, working mode, working channel and specified source MAC address, and then summarizes all probe data and calculates them to obtain a series of test indicators for generating test conclusions.

[0045] Compared with the existing technology, the beneficial effects of the present invention are: the present invention provides a multi-probe Wi-Fi testing method and system. By adopting multiple probes, the present invention can monitor the Wi-Fi spatial signal of the DUT device from all directions in space, which can more comprehensively evaluate the overall Wi-Fi performance of the device than the existing technology that only uses one direction.

[0046] The layout of multiple probes in the test box is symmetrical. When the DUT antenna position is slightly offset, the multi-probe signals are complementary. Therefore, after the multi-probe signals are averaged, they become relatively insensitive to the antenna position. This greatly reduces the requirements for the installation position of the DUT antenna and the position of the DUT in the test box, reducing false alarms and missed alarms.

[0047] During the test, it does not affect the DUT's Wi-Fi communication and the DUT device can still be controlled during the test.

[0048] The test can be performed without a shielding box. The WiFi signal captured by the probe is a complete WiFi message with a qualified signal-to-noise ratio. After smoothing the WiFi signal, the signal's anti-interference ability is enhanced and the signal output is relatively stable.

[0049] After grouping and statistically analyzing multiple probes, we can obtain many indicators such as signal evaluation indicators for each spatial cross-section and horizontal antenna gain, which can more comprehensively evaluate the performance of WiFi.

[0050] The overall structure of the system is simple and the cost is low. During factory production testing, it can be integrated with other testing processes at one station to complete the test in one go, greatly improving production and testing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 This is a structural diagram of the multi-probe Wi-Fi testing system of the present invention;

[0052] Figure 2 This is a schematic diagram of the structure of the spatial position deployment of 12 probes of the present invention;

[0053] Figure 3 This is a schematic diagram of the structure of the spatial position deployment of 6 probes of the present invention;

[0054] Figure 4This is a schematic diagram of the software processing logic flow chart of the Wi-Fi signal monitoring unit of the present invention;

[0055] Figure 5 This is a schematic diagram of the test flow chart of the Wi-Fi test system host of the present invention. DETAILED DESCRIPTION

[0056] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0057] The present invention provides a multi-probe WiFi test system, that is, a test system for a multi-probe WiFi test method, the system structure diagram is as follows: Figure 1 As shown, it consists of several probes (wifi antennas), several wifi chip modules, several wifi signal monitoring units and a wifi test system host; the wifi chip modules and the wifi signal monitoring units are connected through a USB bus HUB; the wifi signal monitoring units and the wifi test system host are connected through an Ethernet LAN;

[0058] like Figure 1 The probe shown is a Wi-Fi antenna that needs to be installed on a test box to receive the Wi-Fi physical electrical signals of the DUT from multiple directions;

[0059] like Figure 1 The test box shown is used to install the probes and place the DUT.

[0060] In order to detect the radiation intensity of WiFi signals in all directions in space, the antenna probes should theoretically be installed on the surface of a virtual concentric sphere with the DUT antenna as the signal radiation origin and the signal spreading outward. It is best if the two probes have spatial symmetry. The symmetry can be symmetrical around the radiation origin or axial symmetric in three-dimensional space with the radiation origin as the center.

[0061] like Figure 1 The Wi-Fi chip module shown is connected to the probe and is used to receive the physical Wi-Fi electrical signals captured by the probe and convert them into Wi-Fi data packets for further analysis of the Wi-Fi information. When selecting a Wi-Fi chip module, you need to choose a chip that supports the monitor function.

[0062] like Figure 1The Wi-Fi signal monitoring unit shown captures Wi-Fi data packets through the Wi-Fi chip module, and then parses the packets to obtain Wi-Fi basic and special parameters such as the transmission signal strength, working channel, working mode, and working rate corresponding to the Wi-Fi packets, which are used as basic test data.

[0063] Multiple probes, multiple wifi chip modules and a wifi signal monitoring unit are connected and communicated through the USB bus. The combination of the three is equivalent to an embedded computer with multiple wifi network cards, that is, Figure 1 The wifi probe array slave shown in;

[0064] Since the signal processing capacity of a WiFi signal monitoring unit is limited, when the number of probes is too large, multiple WiFi signal monitoring units will be used to drive them, thus forming multiple WiFi probe array sub-units.

[0065] like Figure 1 The Wi-Fi test system host shown is equivalent to a general-purpose computer. It is loosely coupled with the Wi-Fi signal monitoring units via an Ethernet local area network. It controls all Wi-Fi signal monitoring units, captures air packets with specified working channels, working modes, working channels, and specified source MAC addresses, and then aggregates all probe data and calculates a series of test indicators for generating test conclusions.

[0066] When the number of probes in the test system is small, the WiFi signal monitoring unit and the WiFi test system host can share one computer.

[0067] In addition to using USB bus communication, the WiFi chip module and the WiFi signal monitoring unit can also use other communication bus technologies such as SDIO for communication connection; in addition to using Ethernet, the WiFi signal monitoring unit and the WiFi test system host can also use other communication methods such as optical fiber switching for connection.

[0068] The shape of the test box is not limited to a cube, it can be a sphere, rhombus, etc.

[0069] A shielding box can be added outside the test box to reduce signal interference;

[0070] In the implementation system of the present invention, a Wi-Fi test system with 12 probes and 6 probes is taken as an example for description.

[0071] like Figure 2As shown in the figure, 12 probes are installed at the midpoints of each side of a cubic box. Although this cubic box is not a sphere, the midpoints of each side are exactly on the surface of a virtual sphere. The DUT device is located at the center point of the cubic box, so it also meets the probe space installation requirements mentioned above. The reason for choosing to use a cubic box is simply because it is easy to obtain materials and it is easy to make the probe bearing cavity.

[0072] For example Figure 3 As shown in the figure, the 6-way probe is installed at the center points of the 6 faces of a cubic box, which also meets the probe space installation requirements mentioned above. It can realize signal detection directly above, below, left, right, front and back of the DUT.

[0073] Regarding the requirements for the probe-bearing cavity, this embodiment is only a preferred solution and does not have to be a cube. As long as the selected cavity can satisfy the spatial distribution of being located on a virtual concentric spherical surface when the probe is installed, the cavity can also be a sphere, rhombus or other structure.

[0074] Regarding the pairwise spatial symmetry requirement of the probes, it does not require an even number of probes. If there is an odd number of probes, then in addition to the pairwise symmetry, the remaining individual probes do not need to meet the symmetry requirement;

[0075] Regarding the probe being located on a virtual concentric spherical surface, it is not required to be located only on the same concentric spherical surface, but can also be located on multiple concentric spherical surfaces, so that the signals of multiple radiation surfaces can be monitored. Figure 2 , Figure 3 In the embodiment, the probes are combined to form 18 probes, which can simultaneously detect and analyze multiple concentric radiation spheres.

[0076] The present invention also provides a method for monitoring and analyzing airborne WiFi signal information, such as Figure 4 As shown in FIG, this method is divided into three parts: initialization processing, data plane processing, and control plane processing. This method can be implemented in a Linux operating system environment.

[0077] Step S1: Initialization process is mainly to make the Wi-Fi chip module enter the state of listening to Wi-Fi air messages, which includes the following steps:

[0078] Step S11: Load the driver of the wifi chip module;

[0079] Step S12: discover and enable all probes, each probe logically corresponding to a Wi-Fi interface card;

[0080] Step S13: Set all Wi-Fi interface network cards to enter monitor working mode and promisc promiscuous mode;

[0081] Step S14: Setting the working channels of all Wi-Fi interface network cards;

[0082] S2: Data plane processing, which mainly processes the reception of Wi-Fi packets and parses Wi-Fi information from the packets. It includes the following steps:

[0083] Step S21: Create a socket for receiving messages for each Wi-Fi interface;

[0084] Step S22: Create a thread to receive messages on the socket (i.e., capture packets);

[0085] Step S23: The message contains a radiotap header, which includes Wi-Fi information. The transmission mode, working rate, signal strength and other information corresponding to the message can be parsed from the radiotap protocol header.

[0086] Step S24: According to the test requirements, the working channel, working mode, working rate, source MAC address, etc. are used as filtering conditions to filter out the messages that meet the requirements and record the WiFi information that meets the requirements;

[0087] Step S25: storing the acquired Wi-Fi information in a database for future use;

[0088] Step S26: Go to step S22 and receive messages in a loop until an exit command is received;

[0089] S3: Control plane processing is mainly used to dynamically change message filtering conditions according to test requirements, switch listening channels and other control tasks, and provide a data access interface for the Wi-Fi test system host.

[0090] The present invention also provides a method for controlling the wifi test process and summarizing the test data. Figure 5 As shown, the WiFi test system host includes the following steps to control the test process and summarize the test data:

[0091] Step 1: Test preparation. Before testing, you need to connect the DUT to the router and place it on the test bench, then click Start Test.

[0092] Step 2: Determine whether automatic control of the DUT is achieved to enter the specified test mode and send packets. Specifying the test mode means setting the DUT to use a fixed channel, operating mode, and operating rate for data communication. If the test system has achieved an automatic control interface with the DUT, go to step 4; if not, go to step 3.

[0093] Step 3: Control the DUT through other external means to test the required working channel, working mode, and working rate for data communication, then continue testing and go to step 5;

[0094] Step 4: Automatically control the DUT to perform data communication in the required working channel, working mode, and working rate;

[0095] Step 5: Get or enter the MAC address of the DUT to filter the WiFi message data;

[0096] Step 6: Obtain or input the test channel, working mode, and working rate of the DUT;

[0097] Step 7: Control all Wi-Fi signal monitoring units and use source MAC, working mode, working rate, and channel as packet capture filtering conditions;

[0098] Step 8: Get the data of all Wi-Fi signal monitoring units, and thus get the data of all probes;

[0099] Step 9: According to the spatial distribution of the probes, logically group the probes, for example, all probes are grouped together, such as Figure 2 Probes 1 to 12 represent omnidirectional integrated signals; all probes in the horizontal section are grouped together, such as Figure 2 Probes 5 to 8 in the figure represent the average horizontal plane signal; the upper horizontal sections are grouped together, such as Figure 2 Probes 1 to 4 in the figure represent the average signal of the upper part of the DUT; the lower horizontal sections are grouped together, such as Figure 2 Probes 9 to 12 in the diagram represent the average signal at the bottom of the DUT. The average signal strength, standard deviation, and other data are then calculated.

[0100] Since Wi-Fi signals may fluctuate or be interfered with, when calculating the signal average, we use mathematical methods based on the normal distribution characteristics of the signal to filter out signal data that is too interfered with or has unreliable signal strength.

[0101] Step 10: Calculate various indicators according to the test standards and determine whether each test item has passed;

[0102] These indicators, such as the signal strength of the probe in a certain direction, the omnidirectional integrated average signal strength, the average signal strength of the horizontal plane, the average signal strength of a certain section, the signal gain of a certain section, etc.

[0103] Step 11: Display the test results as alarms and archive them;

[0104] Step 12: Determine whether sufficient data has been collected to exit the test automatically or manually. If the test needs to be repeated, go to step 8; otherwise, the test ends.

[0105] In summary, compared with the existing technology, the present invention can monitor the WiFi spatial signal of the DUT device from all directions in space by adopting multiple probes, which can more comprehensively evaluate the overall WiFi performance of the device from only one direction than the existing technology.

[0106] The layout of multiple probes in the test box is symmetrical. When the DUT antenna position is slightly offset, the multi-probe signals are complementary. Therefore, after the multi-probe signals are averaged, they become relatively insensitive to the antenna position. This greatly reduces the requirements for the installation position of the DUT antenna and the position of the DUT in the test box, reducing false alarms and missed alarms.

[0107] During the test, it does not affect the DUT's Wi-Fi communication and the DUT device can still be controlled during the test.

[0108] The test can be performed without a shielding box. The WiFi signal captured by the probe is a complete WiFi message with a qualified signal-to-noise ratio. After smoothing the WiFi signal, the signal's anti-interference ability is enhanced and the signal output is relatively stable.

[0109] After grouping and statistically analyzing multiple probes, we can obtain many indicators such as signal evaluation indicators for each spatial cross-section and horizontal antenna gain, which can more comprehensively evaluate the performance of WiFi.

[0110] The overall structure of the system is simple and the cost is low. During factory production testing, it can be integrated with other testing processes at one station to complete the test in one go, greatly improving production and testing efficiency.

[0111] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multi-probe Wi-Fi testing method, characterized by: The specific steps include: S1. Initialization processing: Step S11: Load the driver of the wifi chip module; Step S12: discover and enable all probes, each probe logically corresponding to a Wi-Fi interface card; Step S13: Set all Wi-Fi interface network cards to enter monitor working mode and promisc promiscuous mode; Step S14: Setting the working channels of all Wi-Fi interface network cards; S2, data plane processing: Step S21: Create a socket for receiving messages for each Wi-Fi interface; Step S22: Create a thread to receive messages on the socket, i.e., capture packets; Step S23: The message contains a radiotap header, including Wi-Fi information, and the transmission mode, working rate, and signal strength information corresponding to the message are parsed from the radiotap protocol header; Step S24: According to the test requirements, the working channel, working mode, working rate, and source MAC address are used as filtering conditions to filter out the messages that meet the requirements and record the WiFi information that meets the requirements; Step S25: storing the acquired Wi-Fi information in a database for future use; Step S26: Go to step S22 and receive messages in a loop until an exit command is received; S3, control plane processing: It is used to dynamically change the message filtering conditions according to the test requirements, switch the listening channel control work, and provide a data access interface for the Wi-Fi test system host; S4, Wi-Fi test process control and test data summary processing: Step S41, test preparation: Before the test, the DUT needs to be connected to the router and placed on the test bench, and then click to start the test; Step S42: determine whether automatic control of the DUT to enter the specified test mode and send the packet is achieved; If the test system has realized the automatic control interface with the DUT, go to step S44; If not achieved, go to step S43; Step S43: Control the DUT through other external means to test the required working channel, working mode, and working rate for data communication, and then continue the test and go to step S45; Step S44: automatically controlling the DUT to perform data communication in the required working channel, working mode, and working rate; Step S45: Obtain or input the MAC address of the DUT for filtering Wi-Fi message data; Step S46: Obtain or input the test channel, working mode, and working rate of the DUT; Step S47: Control all Wi-Fi signal monitoring units and use source MAC, working mode, working rate, and channel as packet capture filtering conditions; Step S48: Acquire data from all Wi-Fi signal monitoring units, thereby obtaining data from all probes; Step S49: Logically group the probes based on their spatial distribution. To detect the radiation intensity of the Wi-Fi signal in all directions, the antenna probes are installed on a virtual concentric spherical surface with the DUT antenna as the signal radiation origin and the diffused signal. The probes are spatially symmetric with each other, either symmetrical about the radiation origin or symmetrical in three-dimensional space with the radiation origin as the center. The average signal strength and standard deviation data are then calculated. Step S410: Calculate various indicators according to the test standards and determine whether each test item has passed; Step S411: displaying an alarm and archiving the test results; Step S412: Determine whether sufficient data has been collected to automatically exit the test or manually exit the test. If the test needs to be repeated, go to step S48; Otherwise the test ends.

2. A multi-probe Wi-Fi testing method according to claim 1, characterized in that: The initialization process of step S1 is to enable the Wi-Fi chip module to enter a state of listening to Wi-Fi air messages.

3. A multi-probe Wi-Fi testing method according to claim 1, characterized in that: The data plane processing in step S1 is to cyclically process the reception of Wi-Fi messages and parse Wi-Fi information from the messages.

4. A test system for the multi-probe Wi-Fi test method according to any one of claims 1 to 3, characterized in that: Including probe, wifi chip module, wifi signal monitoring unit and a wifi test system host; The wifi chip module is connected to the wifi signal monitoring unit through a USB bus HUB; the wifi signal monitoring unit is connected to the wifi test system host through an Ethernet LAN.

5. The test system of the multi-probe Wi-Fi test method according to claim 4, characterized in that: The probe is a Wi-Fi antenna installed on the test box and is used to receive Wi-Fi physical electrical signals from the DUT from multiple directions; The test box is used to install the probe and place the DUT; The Wi-Fi chip module is connected to the probe and is used to receive the physical Wi-Fi electrical signals captured by the probe and convert them into Wi-Fi data packets for further analysis of the Wi-Fi information. When selecting a Wi-Fi chip module, you need to choose a chip that supports the monitor function. The Wi-Fi signal monitoring unit captures the Wi-Fi data message through the Wi-Fi chip module, and then parses the Wi-Fi message's corresponding transmission signal strength, working channel, working mode, working rate and other basic Wi-Fi special parameters from the message to use as basic test data; The probe, wifi chip module and a wifi signal monitoring unit are connected and communicated via a USB bus. The combination of the three is equivalent to an embedded computer with a wifi network card. The Wi-Fi test system host and the Wi-Fi signal monitoring unit are loosely coupled through the Ethernet LAN. It controls all Wi-Fi signal monitoring units, captures the air messages of the specified working channel, working mode, working channel and specified source MAC address, and then summarizes all probe data and calculates them to obtain a series of test indicators for generating test conclusions.

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