Jamming device and wireless anti-jamming test system

Abstract

The application relates to an interference device and a wireless anti-interference test system; wherein in the signal transmission unit of the interference device, an interference side signal transmission path comprises a first interference transmission path connected to an interference device and a second interference transmission path; the first interference transmission path is configured to receive downlink wireless signals output by the interference device through a second shielding environment, to perform signal processing on the downlink wireless signals, and to transmit the processed downlink wireless signals into a first shielding environment as interference signals; the second interference transmission path is configured to transmit uplink wireless signals from an auxiliary device propagating in the first shielding environment into a second shielding environment; an auxiliary side signal transmission path is configured to transmit downlink wireless signals propagating in the first shielding environment into the second shielding environment, and to transmit uplink wireless signals output by the auxiliary device into the first shielding environment; and the application can improve test accuracy.

Description

Technical Field

[0001] This application relates to the field of wireless communication technology, and in particular to an interference device and a wireless anti-interference testing system. Background Technology

[0002] With the rapid development of wireless communication, wireless products are playing an increasingly important role in our lives. However, wireless interference significantly restricts and impacts the wireless performance and user experience of these products.

[0003] However, current interference testing methods do not fit real-world usage scenarios and cannot guarantee testing accuracy. Summary of the Invention

[0004] Therefore, it is necessary to provide an interference device and a wireless anti-interference testing system that can ensure the accuracy of testing in response to the above-mentioned technical problems.

[0005] In a first aspect, this application provides an interference device for performing anti-interference tests on at least one device in a first shielded environment.

[0006] The jamming device includes a jamming unit and a signal transmission unit; the jamming unit includes jamming equipment and auxiliary equipment located in a second shielded environment; the signal transmission unit is configured with a jamming-side signal transmission path and an auxiliary-side signal transmission path, wherein:

[0007] The interference-side signal transmission path includes a first interference transmission path and a second interference transmission path connected to the interference device; the first interference transmission path is configured to receive downlink wireless signals output by the interference device through a second shielded environment, process the downlink wireless signals, and transmit the processed downlink wireless signals as interference signals to the first shielded environment; the second interference transmission path is configured to transmit uplink wireless signals propagating in the first shielded environment from the auxiliary device to the second shielded environment.

[0008] The auxiliary signal transmission path is configured to transmit downlink wireless signals propagating in the first shielded environment to the second shielded environment, and to transmit uplink wireless signals output by the auxiliary device to the first shielded environment.

[0009] In one embodiment, the jamming device is connected to the auxiliary device via an air interface.

[0010] In one embodiment, the first interference transmission path includes:

[0011] The first amplifier is configured to amplify the received downlink wireless signal and output the amplified downlink wireless signal.

[0012] The first attenuator is configured to attenuate the amplified downlink wireless signal and output the attenuated downlink wireless signal.

[0013] The first antenna is located in a first shielded environment and is configured to radiate the attenuated downlink wireless signal into the first shielded environment.

[0014] In one embodiment, at least one device in a first shielded environment includes a device under test (DUT) and a companion device, with the DUT connected to the companion device via an over-the-air interface.

[0015] In one embodiment,

[0016] The first attenuator includes a programmable attenuator; the attenuation value of the first attenuator is determined based on the amplification factor of the first amplifier and the range of received signal strength of the accompanying test device.

[0017] In one embodiment, the interference unit includes multiple units, and the second shielding environment corresponding to each interference unit is independent of each other.

[0018] In one embodiment, the first amplifier includes multiple amplification channels, the input of each amplification channel is connected to a corresponding interference unit, and the output of each amplification channel is connected to the input of the first attenuator.

[0019] In one embodiment, the second interference transmission path includes:

[0020] The second antenna is located in the first shielding environment and is configured to receive uplink wireless signals.

[0021] The second amplifier is configured to amplify the received uplink wireless signal and transmit the amplified uplink wireless signal to the jamming device.

[0022] In one embodiment, the interference unit includes multiple units, and the second shielding environment corresponding to each interference unit is independent of each other.

[0023] In one embodiment, the second amplifier includes multiple amplification channels, the input of each amplification channel is connected to the second antenna, and the output of each amplification channel is connected to the corresponding interference unit.

[0024] In one embodiment, the auxiliary signal transmission path includes a third antenna in a first shielded environment and a fourth antenna in a second shielded environment; the third antenna and the fourth antenna are wiredly connected.

[0025] The third antenna is used to transmit the received downlink wireless signal to the fourth antenna and to radiate the received uplink wireless signal into the first shielded environment.

[0026] The fourth antenna is used to transmit the received uplink wireless signal to the third antenna and to radiate the received downlink wireless signal into the second shielded environment.

[0027] In one embodiment, the third antenna includes an omnidirectional antenna; the fourth antenna includes an omnidirectional antenna.

[0028] In one embodiment, the operating frequency bands of the interference signal include the 5G band and the 2.4G band;

[0029] The downlink radio signal is obtained by the jamming device processing downlink data packets; the uplink radio signal is obtained by the auxiliary device processing uplink data packets; the number of bytes in the downlink data packet is the same as the number of bytes in the uplink data packet.

[0030] Secondly, this application also provides a wireless anti-interference testing system, including a testing device and an interference device as described above; wherein:

[0031] The testing setup includes the device under test (DUT) and a companion device (BUT) in a first shielded environment;

[0032] The system also includes a computer device connected to the device under test; the computer device is used to acquire test data when the device under test and the auxiliary device are communicating wirelessly, in the presence of interference signals propagating in a first shielded environment.

[0033] In one embodiment, the computer device is configured with testing tools for acquiring test data, including throughput.

[0034] In one embodiment, the test apparatus further includes a test attenuator and a test antenna, both of which are located in a first shielded environment.

[0035] The device under test (DUT), the auxiliary attenuator, and the auxiliary antenna are connected in sequence; the DUT outputs a test signal to the auxiliary attenuator; the test signal processed by the auxiliary attenuator is radiated into the first shielded environment by the auxiliary antenna.

[0036] In one embodiment, the system further includes a first shielding device and a second shielding device; the first shielding device is provided with a first shielding cavity for providing a first shielding environment, and the second shielding device is provided with a second shielding cavity for providing a second shielding environment;

[0037] The system also includes a signal transmission interface located in the first shielded cavity, through which the device under test is connected to the computer equipment;

[0038] The system also includes a turntable located inside the first shielding cavity, with the device under test located at the center of the turntable, and the auxiliary devices set on the turntable at a preset interval relative to the device under test.

[0039] In one embodiment, there are multiple auxiliary testing devices, each distributed at a preset angle on the edge of the turntable.

[0040] In one embodiment,

[0041] The device under test is the first wireless access point, and the device under test is the first wireless station; the first wireless access point communicates with the first wireless station through the first channel;

[0042] The device under test is the second wireless access point, and the auxiliary device is the second wireless station; the second wireless access point communicates with the second wireless station through the second channel;

[0043] There are multiple interference units, and the second shielding environment corresponding to each interference unit is independent of each other; wherein, the second channel of at least one interference unit and the first channel are the same channel under the same frequency band.

[0044] In one embodiment, the second channel of at least one interference unit and the first channel are two adjacent channels in the same frequency band, and the frequency range of the first channel partially overlaps with the frequency range of the second channel.

[0045] In one embodiment, the second channel of at least one interference unit and the first channel are two adjacent channels in the same frequency band, and the frequency range of the first channel does not overlap with the frequency range of the second channel.

[0046] In one embodiment, the device under test includes a wireless access point, and the companion device includes a wireless station.

[0047] There are multiple interference units, and the second shielding environment corresponding to each interference unit is independent of each other; wherein, at least one interference device in the interference unit is one of a wireless access point, a Bluetooth master device, and a network device, and the auxiliary device corresponds to a wireless station, a Bluetooth slave device, or a terminal device.

[0048] The aforementioned interference device and wireless anti-interference testing system include an interference unit and a signal transmission unit. The signal transmission unit is configured with an interference-side signal transmission path and an auxiliary-side signal transmission path for transmitting uplink and downlink wireless signals, enabling the interference device and auxiliary device to communicate with each other. This not only conforms to actual usage scenarios but also makes the interference environment easier to solidify, thereby reducing the impact of testing on the interference signal and making the data more inheritable. At the same time, the interference-side signal transmission path processes the downlink wireless signal output by the interference device to obtain interference signals with different signal strengths. Thus, this application improves the dynamic range of the interference signal, meets the testing requirements of different test signal strengths, and ensures test accuracy. Attached Figure Description

[0049] Figure 1This is a schematic diagram of the first networking method for a traditional testing system;

[0050] Figure 2 This is a schematic diagram of the second networking method for a traditional testing system;

[0051] Figure 3 A schematic diagram of hidden nodes in a traditional testing system;

[0052] Figure 4 This is a diagram illustrating the application environment of the interference device in one embodiment;

[0053] Figure 5 This is a schematic diagram of the interference device in one embodiment;

[0054] Figure 6 This is a schematic diagram of the specific structure of the interference device in one embodiment;

[0055] Figure 7 This is a network diagram illustrating the configuration of multiple interference units in one embodiment.

[0056] Figure 8 This is a network diagram illustrating the configuration of multiple interference units in another embodiment;

[0057] Figure 9 This is a schematic diagram of the structure of a wireless anti-interference test system in one embodiment;

[0058] Figure 10 This is a schematic diagram of the specific structure of a wireless anti-interference test system in one embodiment;

[0059] Figure 11 This is a schematic diagram of an extended network of a wireless anti-interference test system under multiple interference frequency bands in one embodiment;

[0060] Figure 12 This is a schematic diagram of an extended network for a wireless anti-interference test system under multiple interference frequency bands in another embodiment;

[0061] Figure 13 This is a schematic diagram of an extended network of a wireless anti-interference test system under multiple interference types in one embodiment;

[0062] Figure 14 This is a schematic diagram of an extended network for a wireless anti-interference test system under multiple interference types in another embodiment. Detailed Implementation

[0063] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0064] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0065] It is understood that the terms "first," "second," etc., used in this application may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediary element. Furthermore, in the following embodiments, "connection" should be understood as "electrical connection," "communication connection," etc., if there is transmission of electrical signals or data between the connected objects.

[0066] In the anti-interference performance test of Wi-Fi (Wireless Fidelity), taking the test devices as AP (Access Point) and STA (Station) as an example, the AP and STA communicate wirelessly and can interact via air interface. Traditional testing methods use the following two networking methods:

[0067] The first networking method is as follows: Figure 1 As shown, the interfering AP and interfering STA, as well as the test AP and test STA, are all in the same shielded environment. The first networking method cannot adjust the strength of the interference signal and can only test Wi-Fi performance under strong interference, limiting its application and making it unsuitable for general testing. In this networking method, the interfering device and the test device are very close, and differences in their proximity can lead to significant differences in air interface loss. Under these circumstances, even slight changes in the positions of the AP and STA can result in substantial differences in the strength of the interference signal. This makes it difficult to solidify the environment (as the environment changes when switching test APs) and results in poor data inheritance.

[0068] The second networking method is as follows: Figure 2 As shown, the test environment is divided into an interference environment and a test environment. In each interference environment, the AP and STA communicate over the air. The interference signal generated by this communication is introduced into the attenuator through an antenna and cable. The signal from the attenuator then enters the test environment through a cable and antenna. The second networking method controls the strength of the interference signal by adjusting the attenuator, but the interference signal strength entering the test environment is already relatively weak, and the mutual interference between different interference environments is almost negligible.

[0069] The second networking method offers very limited adjustment range for interference signal strength. In this method, the interference signal undergoes over-the-air attenuation in both the interference and testing environments, and the attenuator in the line itself also attenuates the signal, resulting in interference signal strength typically below -55dBm. This makes it unsuitable for assessing scenarios with strong interference signals. Furthermore, because the interference environment is over-the-air, this method also suffers from difficulty in establishing a stable environment. Additionally, this networking method introduces hidden nodes (such as...). Figure 3 As shown, node A is transmitting data to node B, and node C also wants to transmit data to node B. Because node A cannot detect the existence of node C, both nodes A and C send packets to node B simultaneously. (If more than two nodes send packets simultaneously, a collision will occur at node B, causing errors in the frames received by node B.) Given the very low signal strength between the test environment and the interference environment, after a certain attenuation, the test signal becomes "invisible" to the interference signal, i.e., a hidden node. In this scenario, the interference signal will indiscriminately send packets regardless of the test signal, leading to numerous collisions, causing a sharp drop in Wi-Fi performance, and negatively impacting the accuracy of anti-interference performance testing.

[0070] This application provides an interference device and a wireless anti-interference testing system, which can solve the above-mentioned problems. Specifically, this application can test the anti-interference performance of Wi-Fi under different interference signal strengths (strong, medium, and weak), ensuring test accuracy while closely reflecting actual usage scenarios. To make the purpose, technical solution, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0071] The interference device provided in this application embodiment can be applied to, for example... Figure 4 The application environment shown. Figure 4The illustrated wireless anti-interference testing system includes a testing device 10, an interference device 20, and a computer device 30. The testing device 10 includes at least one device located in a first shielded environment. The interference device is used to perform anti-interference testing on the at least one device located in the first shielded environment. In some examples, the testing device 10 may include a device under test (DUT) 110 and a companion device 120 located in the first shielded environment. The interference device 20 is used to provide interference signals of different signal strengths to the testing device 10. The computer device 30 is used to acquire test data of the DUT 110 and the companion device 120 during wireless communication when the interference signal propagates in the first shielded environment. In some examples, the test data may include throughput (data transmission rate in Mbits / s). The computer device 30 is equipped with testing tools for acquiring the test data, such as Chariot or iperf. Furthermore, during the testing process, the computer device 30 may be located either within or outside the first shielded environment; this application does not limit this.

[0072] It should be noted that the shielding environment in this application can refer to an isolated testing environment, that is, an environment where the test is conducted in a Wi-Fi operating frequency and channel free from wireless signal interference, in order to avoid unnecessary interference. Furthermore, the first and second shielding environments are independent of each other. The first and second shielding environments, as well as the mutually independent second shielding environments, can all be implemented using appropriate shielding devices. These shielding devices can provide an isolated testing environment; for example, the shielding device may have a shielding cavity for providing the shielding environment. In some examples, the shielding device may include, but is not limited to, shielding boxes or shielding rooms. In other examples, the shielding device in this application uses a shielding box, which is convenient to assemble and has low cost. This shielding box can be implemented using an electromagnetic shielding box, a shielding enclosure, etc.

[0073] Furthermore, the jamming device 20 includes a jamming unit 200 and a signal transmission unit 300; wherein, the jamming unit 200 can serve as an interference source providing an interference signal, which can be a wireless communication signal; the interference signal in this application can include wireless cellular networks such as GSM (Global System for Mobile communications), WCDMA (Wideband Code Division Multiple Access), and LTE (Long Term Evolution), as well as Bluetooth (BT), Zigbee, and other signals in the same frequency band, and DECT (Digital Enhanced Cordless Telecommunications) cordless telephone signals, etc.; in some examples, the operating frequency band of the interference signal can include the 5G band and the 2.4G band. In addition, the interference signal can also be used to generate adjacent channel interference, co-channel interference, and overlapping frequency interference against the device under test 110 in the test device 10.

[0074] Specifically, the interference unit 200 may include an interference device 210 and an auxiliary device 220, both located in the second shielded environment. Further, such as... Figure 4 As shown, the number of interference units 200 can also be multiple, and the second shielding environment corresponding to each interference unit 200 is independent of each other. With multiple interference units 200, each interference unit 200 can be used as an interference source providing different interference signals, thereby expanding multiple interference scenarios. It should be noted that this application does not specifically limit the number of interference units 200; when there are multiple interference units 200, the signal transmission unit 300 can connect to the interference device 210 and auxiliary device 220 in each interference unit 200 respectively.

[0075] The signal transmission unit 300 in the jamming device 20 can be used to extract the wireless signal (e.g., downlink wireless signal) output by the jamming device 210 in the jamming unit 200 through the second shielded environment, and transmit the processed signal as a jamming signal to the first shielded environment. For example, the sampling antenna radiates the signal into the first shielded environment. Simultaneously, the signal transmission unit 300 also provides a signal loop for the auxiliary device 220 in the jamming unit 200, ensuring interoperability between the jamming device 210 and the auxiliary device 220, conforming to the protocol and actual scenario, and solidifying the jamming environment.

[0076] It should be noted that the device under test (DUT) 110 and the auxiliary device under test (AUT) 120 in the test apparatus 10 of this application can communicate wirelessly. In some examples, the DUT 110 can refer to a wireless access point (AP) and the AUT 120 can refer to a wireless station (STA). In the test apparatus 10, the DUT 110 can be connected to an attenuator via a cable, and the attenuator transmits signals through a connected antenna, thereby interacting with the AUT 120. Furthermore, during the test, the distance between the DUT 110 and the AUT 120 in the test apparatus 10 ranges from 3m to 10m, which can better simulate the real environment.

[0077] In some examples, the device under test (DUT) 110 and the auxiliary device 120 in the test apparatus 10 of this application adopt a one-to-one quantity relationship, which can ensure that the position and orientation of the auxiliary devices are uniform, making the test more rigorous. In addition to a one-to-one quantity relationship, the DUT 110 and the auxiliary device 120 in the test apparatus 10 of this application can also have a one-to-many quantity relationship, that is, one DUT corresponds to multiple auxiliary devices, thus enabling testing at multiple angles and directions. Furthermore, the interference device 210 and the auxiliary device 220 in the interference unit 200 of this application can communicate wirelessly. In some examples, the interference device 210 can be one of a wireless access point, a Bluetooth master device, and a network device, and the auxiliary device 220 corresponds to a wireless station, a Bluetooth slave device, or a terminal device. The quantity relationship between the interference device 210 and the auxiliary device 220 in the interference unit 200 can be one-to-one or one-to-many; this application does not limit this.

[0078] Furthermore, the wireless access points (APs) in this application embodiment include, but are not limited to, home gateways, routers, servers, switches, and bridges. Optionally, in this application embodiment, the network device can be a base station in an LTE communication system or a base station (or g Node B, abbreviated as gNB) in a New Radio Access Technology (NR) system. The terminal devices in this application embodiment include, but are not limited to, various personal computers, laptops, smartphones, tablets, IoT devices (e.g., smart speakers, smart TVs, smart air conditioners, smart vehicle devices, etc.) and portable wearable devices (e.g., smartwatches, smart bracelets, head-mounted devices, etc.), and this application is not limited to any particular type.

[0079] In one embodiment, such as Figure 5 As shown, an interference device is provided, which is used in... Figure 4Taking the wireless anti-interference test system shown as an example, the interference device is used to perform anti-interference testing on at least one device in a first shielded environment. The interference device includes an interference unit 200 and a signal transmission unit 300; the interference unit 200 includes an interference device 210 and an auxiliary device 220 in a second shielded environment; the signal transmission unit 300 is configured with an interference-side signal transmission path 310 and an auxiliary-side signal transmission path 320, wherein:

[0080] The interference-side signal transmission path 310 includes a first interference transmission path 312 and a second interference transmission path 314 connected to the interference device 210. The first interference transmission path 312 is configured to receive downlink wireless signals output by the interference device 210 through a second shielded environment, process the downlink wireless signals, and transmit the processed downlink wireless signals as interference signals to the first shielded environment. The second interference transmission path 314 is configured to transmit uplink wireless signals propagating in the first shielded environment from the auxiliary device 220 to the second shielded environment.

[0081] The auxiliary signal transmission path 320 is configured to transmit downlink wireless signals propagating in the first shielded environment to the second shielded environment, and to transmit uplink wireless signals output by the auxiliary device 220 to the first shielded environment.

[0082] Specifically, based on the signal transmission unit 300 configured with the interference-side signal transmission path 310 and the auxiliary-side signal transmission path 320, the interference device 210 and the auxiliary device 220 can communicate with each other. Taking at least one device in the first shielded environment, including the device under test 110 and the accompanying device 120, as an example, in this application, the interference device, the auxiliary device, the device under test, and the accompanying device can all communicate with each other, which conforms to the protocol and the actual scenario. As the interference unit 200, which is used to provide interference signals, the data service between its interference device 210 and the auxiliary device 220 is bidirectional, which obviously conforms to the interaction logic of the 802.11 protocol and complies with the backoff mechanism of the 802.11 Wi-Fi protocol.

[0083] In one embodiment, the interference device 210 is connected to the auxiliary device 220 via an air interface. Furthermore, the device under test 110 can be connected to the companion device 120 via an air interface.

[0084] It should be noted that the interference unit used to provide the interference signal in this application is different from a signal generator. A signal generator, like a signal playback device, has a unidirectional data service with the interfering STA (either continuously transmitting without receiving, or continuously receiving without transmitting), which does not conform to the interaction logic of the 802.11 protocol. More seriously, because it does not comply with the backoff mechanism of the 802.11 Wi-Fi protocol, the generated interference signal will completely overwhelm the test signal, rendering the test meaningless.

[0085] Furthermore, such as Figure 5 As shown, the interference-side signal transmission path 310 includes a first interference transmission path 312 and a second interference transmission path 314. The first interference transmission path 312 is connected to the interference device 210 and is used to receive the downlink wireless signal output by the interference device 210 through the second shielded environment. It also processes the downlink wireless signal and transmits the processed downlink wireless signal as an interference signal to the first shielded environment. Further, the signal processing performed on the downlink wireless signal by the first interference transmission path 312 may include amplification and attenuation. The first interference transmission path 312 can use a cable to introduce the downlink wireless signal output by the interference device 210 through the second shielded environment, and use corresponding amplifiers, attenuators, or other components with amplification and attenuation functions to amplify and attenuate the downlink wireless signal. It can also use antennas or other devices to radiate the processed downlink wireless signal to the first shielded environment.

[0086] In this application, the first interference transmission path 312 amplifies and attenuates the downlink wireless signal, ensuring that the strength of the interference signal entering the first shielded environment is equal to the strength of the signal introduced into the first shielded environment by the first interference transmission path 312. Therefore, changes in the physical positions of the interference device 210 and auxiliary device 220 in the interference unit 200 do not affect the interference signal strength. This makes the interference environment easier to solidify and the data more inheritable when switching interference APs or modifying the interference environment. This application can meet the testing requirements for different interference signal strengths and improves the dynamic range of the interference signal. In some examples, the first interference transmission path 312 can amplify the signal by 30dB.

[0087] The second interference transmission path 314 is used to transmit the uplink wireless signal propagating in the first shielded environment from the auxiliary device 220 to the second shielded environment (to the interference device 210). In other words, this application uses the second interference transmission path 314 to achieve a reverse loop (i.e., a loop from the auxiliary device 220 to the interference device 210), ensuring that the interference device 210 can communicate with the auxiliary device 220. Furthermore, the second interference transmission path 314 can use an antenna to receive the uplink wireless signal propagating in the first shielded environment, and then transmit the uplink wireless signal to the interference device 210 via a cable.

[0088] It should be noted that the downlink and uplink wireless signals in the embodiments of this application can essentially refer to the air interface signals between the jamming device and the auxiliary device.

[0089] In addition, such as Figure 5 As shown, the auxiliary-side signal transmission path 320 is used to transmit downlink wireless signals propagating in the first shielded environment to the second shielded environment (to be transmitted to the auxiliary device 220), and to transmit uplink wireless signals output by the auxiliary device 220 to the first shielded environment. That is, the auxiliary device 220 receives downlink wireless signals introduced into the first shielded environment by the interfering device 210 through the auxiliary-side signal transmission path 320, and simultaneously transmits the output uplink wireless signals to the first shielded environment through the auxiliary-side signal transmission path 320, ensuring communication between the auxiliary device 220 and the interfering device 210. Furthermore, the auxiliary-side signal transmission path 320 can employ antennas and cables to achieve the reception and transmission of the corresponding signals.

[0090] It should be noted that, Figure 5 The diagram illustrates the connection method between at least one interference unit 200 and each path configured in the signal transmission unit 300. When there are multiple interference units 200, the interference devices 210 in each interference unit 200 can either be connected to each of the first interference transmission paths 312 one-to-one, or they can all be connected to one of the first interference transmission paths 312. Similarly, the interference devices 210 in each interference unit 200 can either be connected to each of the second interference transmission paths 314 one-to-one, or they can all be connected to one of the second interference transmission paths 314. That is, the number of interference-side signal transmission paths 310 can be one or more, while the auxiliary devices 220 in each interference unit 200 and each auxiliary-side signal transmission path 320 are connected one-to-one, meaning the number of auxiliary-side signal transmission paths 320 is the same as the number of interference units 200.

[0091] Based on the above, the jamming device, auxiliary device, device under test, and companion device can all communicate with each other, which not only conforms to actual use scenarios but also makes the jamming environment easier to solidify, thereby reducing the impact of testing on the jamming signal and making the data more inheritable. At the same time, the signal transmission path on the jamming side amplifies and attenuates the downlink wireless signal output by the jamming device, thereby obtaining jamming signals with different signal strengths. Thus, this application improves the dynamic range of the jamming signal, which can meet the testing requirements of different test signal strengths and ensure test accuracy.

[0092] In one embodiment, such as Figure 6 As shown, the first interference transmission path may include:

[0093] The first amplifier 402 is configured to amplify the received downlink wireless signal and output the amplified downlink wireless signal.

[0094] The first attenuator 404 is configured to attenuate the amplified downlink wireless signal and output the attenuated downlink wireless signal.

[0095] The first antenna 406 is located in a first shielded environment and is configured to radiate the attenuated downlink wireless signal into the first shielded environment.

[0096] Specifically, the first interference transmission path includes a first amplifier 402, a first attenuator 404, and a first antenna 406 connected in sequence, wherein the first antenna 406 is located in a first shielded environment. Further, the input of the first amplifier 402 is connected to the signal output of the interference device 210 via a cable, the input of the first attenuator 404 is connected to the output of the first amplifier 402, and the first antenna 406 is connected to the output of the first attenuator 404. This application proposes to introduce the downlink wireless signal output by the interference device 210 sequentially into the first amplifier 402, the first attenuator 404, and the first antenna 406 via a cable, making the leakage signal at the air interface negligible, thereby making the interference signal strength equal to the signal strength ultimately introduced into the first shielded environment by the cable. Based on this application, changes in the physical location of the device in the interference unit 200 do not affect the interference signal strength. When switching interference devices or modifying the interference environment, the interference environment is more easily solidified, and the data is more inheritable.

[0097] In some examples, the cable may include an RF cable, and the first antenna 406 may be implemented using the antenna of the jamming device 210. Taking the jamming device 210 as a wireless access point (AP) as an example, the first antenna 406 can be the antenna of the AP. This application improves the dynamic range of the interference signal by adding an amplifier to extract the RF signal from the AP antenna. After being extracted by cable, the signal strength of the interference will not change with the location of the AP, which is more conducive to environmental solidification.

[0098] Furthermore, the downlink wireless signal is amplified by the first amplifier 402, and the amplified downlink wireless signal is output to the first attenuator 404 for attenuation. Finally, the attenuated downlink wireless signal is radiated to the first shielded environment by the first antenna 406. This can meet the testing requirements of different interference signal strengths and improve the dynamic range of interference signal strength.

[0099] Taking at least one device in a first shielded environment, including a device under test 110 and a companion device 120, with the device under test 110 connected to the companion device 120 via an air interface as an example, in one embodiment, the first amplifier 402 may include a power amplifier; the first attenuator 404 may include a programmable attenuator; and the attenuation value of the first attenuator 404 is determined based on the amplification factor of the first amplifier 402 and the range of received signal strength of the companion device 120.

[0100] Specifically, the first amplifier 402 in this application can be implemented using a power amplifier. The amplification factor of the first amplifier 402 can be about 30 times (30dB), which can cope with the large downlink line loss. It should be noted that the amplification factor of the first amplifier 402 can be adjusted according to the actual situation, but it should not be too large, as too large a factor will cause signal distortion.

[0101] The first attenuator 404 can be implemented using a programmable attenuator. A programmable attenuator is an instrument that adjusts a predetermined attenuation value in steps within a certain frequency range; it is a bidirectional system. In this application, the programmable attenuator can be configured with M input ports and N output ports, including X programmable attenuation units. Each programmable attenuation unit can independently control the signal attenuation, used to adjust the energy value of different channel signals.

[0102] The attenuation value of the first attenuator 404 is determined based on the amplification factor of the first amplifier 402 and the received signal strength range of the test device 120. Therefore, the attenuation value of the programmable attenuator in this application, after configuration, can match the signal strength of the actual usage scenario, thus ensuring that after adjusting the attenuator, the signal strength received by the test device 120 from the device under test 110 conforms to the actual scenario. Specifically, in practical applications, taking Wi-Fi as an example, the signal strength is typically -40dBm to -60dBm. In this application, the attenuator can be matched with the amplification factor of the first amplifier, enabling the test device (e.g., a wireless station STA) to cover typical test scenarios such as -40dBm, -50dBm, and -60dBm.

[0103] Furthermore, by utilizing the first amplifier 402 and the first attenuator 404 in the first interference transmission path, this application can divide the interference signal strength into three levels, thereby matching the short-range strong interference, medium-range medium-strong interference, and long-range weak interference encountered in practical applications. This application can test the Wi-Fi anti-interference performance under different interference signal strengths (strong, medium, and weak).

[0104] In one embodiment, such as Figure 6 As shown, the second interference transmission path may include:

[0105] The second amplifier 502 is configured to amplify the received uplink wireless signal and transmit the amplified uplink wireless signal to the jamming device 210.

[0106] The second antenna 504 is located in the first shielded environment and is configured to receive uplink wireless signals.

[0107] Specifically, the input of the second amplifier 502 is connected to the second antenna 504, and the output of the second amplifier 502 is connected to the signal input of the jamming device 210. The second amplifier 502 can be used to amplify the received uplink wireless signal and transmit the amplified uplink wireless signal to the jamming device 210.

[0108] This application adds a reverse loop (i.e., a loop from the jamming device 210 to the auxiliary device 220) between the jamming device 210 and the auxiliary device 220 through a second interference transmission path, which can ensure normal operation of services (Wi-Fi communication is interactive); the signal (uplink wireless signal) sent by the auxiliary device 220 to the jamming device 210 can be introduced to the signal input terminal of the jamming device 210 through the air interface environment in the first shielding environment, the second antenna 504 and the second amplifier 502.

[0109] Furthermore, based on the second amplifier in the second interference transmission path, the signal strength from the first shielded environment to the second shielded environment in this application is stronger (the loop signal can be amplified by the second amplifier), which can solve the problem of hidden nodes and eliminate the possibility of hidden nodes. Specifically, the signal in the second interference transmission path is amplified by the second amplifier by a factor of 20 or 30, thereby ensuring the stability of the uplink wireless signal. In some examples, the signal in the second interference transmission path can be amplified by 30dB by the second amplifier.

[0110] In one embodiment, the second amplifier 502 includes a power amplifier; the output of the second amplifier 502 is connected to the radio frequency port of the interference device 210.

[0111] Specifically, the second amplifier 502 in this application can be implemented using a power amplifier. Taking the jamming device 210 as a wireless access point (AP) as an example, the output of the second amplifier 502 can be connected to the RF port of one of the antennas of the wireless access point AP.

[0112] In one embodiment, such as Figure 6 As shown, the auxiliary side signal transmission path may include a third antenna 602 in a first shielded environment and a fourth antenna 604 in a second shielded environment; the third antenna 602 and the fourth antenna 604 are connected by a wire.

[0113] The third antenna 602 is used to transmit the received downlink wireless signal to the fourth antenna 604 and to radiate the received uplink wireless signal into the first shielded environment.

[0114] The fourth antenna 604 is used to transmit the received uplink wireless signal to the third antenna 602 and to radiate the received downlink wireless signal into the second shielded environment.

[0115] Specifically, the auxiliary device 220 introduces the output uplink wireless signal into the first shielded environment through the air interface, the third antenna 602, and the fourth antenna 604. At the same time, the fourth antenna 604 is responsible for receiving the downlink wireless signal introduced into the first shielded environment by the first antenna 406, and then transmitting the downlink wireless signal to the auxiliary device 220 through the third antenna 602 and the air interface.

[0116] In one embodiment, the third antenna 602 includes an omnidirectional antenna; the fourth antenna 604 includes an omnidirectional antenna. Specifically, in this application, the auxiliary-side signal transmission path can employ an omnidirectional antenna to support wireless communication between the auxiliary device 220 and the interference device 210.

[0117] In one embodiment, the operating frequency bands of the interference signal include the 5G band and the 2.4G band;

[0118] The downlink wireless signal is obtained by the jamming device 210 processing downlink data packets; the uplink wireless signal is obtained by the auxiliary device 220 processing uplink data packets; the number of bytes in the downlink data packets is the same as the number of bytes in the uplink data packets.

[0119] Specifically, this application covers testing of the 2.4G and 5G frequency bands of this scheme. Taking Wi-Fi anti-interference testing as an example, LTE and Bluetooth signals can be used as 5G Wi-Fi interference signals and 2.4G Wi-Fi interference signals, respectively.

[0120] In this application, the downlink data packets processed by the jamming device 210 and the uplink data packets processed by the auxiliary device 220 have the same number of bytes as the uplink data packets. That is, the jamming device 210 and the auxiliary device 220 use a fixed-flow packet mixing mechanism, thereby ensuring stable interference signal energy. In some examples, this application can achieve fixed-flow packet mixing by limiting the maximum flow using the Chariot streaming tool, or by using the -b parameter of the Iperf tool. For example, iperf-c IP-b2M-u can achieve a fixed 2M flow packet mixing to ensure a stable interference source.

[0121] In one embodiment, such as Figure 7As shown, there are multiple interference units 200, and the second shielding environment corresponding to each interference unit 200 is independent of each other. Among them, the interference devices 210 in the interference unit 200 are respectively connected to the first amplifier in the corresponding first interference transmission path and the second amplifier in the corresponding second interference transmission path. That is, each interference device 210 corresponds to one interference side signal transmission path, and each auxiliary device 220 corresponds to one auxiliary side signal transmission path.

[0122] In one embodiment, such as Figure 8 As shown, there are multiple interference units, and the second shielding environment corresponding to each interference unit is independent of each other.

[0123] The first amplifier may include multiple amplification channels, the input of each amplification channel is connected to the corresponding interference unit, and the output of each amplification channel is connected to the input of the first attenuator.

[0124] Furthermore, the second amplifier may include multiple amplification channels, with the input of each amplification channel connected to the second antenna and the output of each amplification channel connected to the corresponding interference unit.

[0125] The first amplifier includes multiple amplification channels, each of which has an input terminal for receiving downlink radio signals output by the jamming device and an output terminal for connecting to the input terminal of the first attenuator. The second amplifier includes multiple amplification channels, each of which has an input terminal for connecting to the second antenna and an output terminal for transmitting the amplified uplink radio signals to each jamming device.

[0126] Specifically, in this application, when there are multiple interference units, it can be implemented by having each interference unit correspond to an interference-side signal transmission path, and each interference unit corresponding to an auxiliary-side signal transmission path. That is, each interference device 210 corresponds to the same interference-side signal transmission path, and each auxiliary device 220 corresponds to an auxiliary-side signal transmission path.

[0127] In this scenario, the first amplifier can have multiple amplification channels, and the second amplifier can also have multiple amplification channels; that is, an amplifier with multi-channel amplification capability is used, and each channel can amplify by a specified factor. Simultaneously, the first attenuator can also be a multi-channel attenuator. In some examples, during actual testing, only one multi-channel amplifier and one multi-channel attenuator may be needed.

[0128] With only a first amplifier, a second amplifier, and a first attenuator, this application can expand to various interference scenarios. Each interference unit 200 can be used as an interference source providing different interference signals, such as co-channel interference, adjacent-channel interference, and overlapping-channel interference. Furthermore, it can expand to other types of interference, such as interference from BT and LTE signals. This application can not only test the performance under single interference separately, but also combine them to evaluate the performance under combined interference in real-world scenarios, making it more realistic and improving testing accuracy.

[0129] To further illustrate the adjustment of interference signal strength in this application, a specific example is provided below, using Wi-Fi anti-interference performance testing as an example, based on the following formula:

[0130] Los=32.44+20lg d(Km)+20lg f(MHz)

[0131] Where Los is the propagation loss of electromagnetic waves in free space, measured in dB. d is the distance between the antennas of the transmitting and receiving devices, measured in km. f is the operating frequency, i.e., the signal transmission frequency, measured in MHz. It should be noted that, in Wi-Fi, the distance between the antennas of the transmitting and receiving devices refers to the distance between the antenna of the wireless access point (AP) and the antenna of the wireless station (STA).

[0132] If using, such Figure 2 The traditional networking method shown, based on the above formula, first assumes d = 0.1m, f = 2400MHz, then the Los for each air interface segment is 20dB. Let the power Tx of the transmitting signal antenna port be 15dBm, the total line loss (including the loss when the attenuator returns to zero and the cable loss) be 5dB, and the air loss be 25dB. Then, the interference signal strength received by the test equipment is Rx = 15 - 20 x 2 - 5 - 25 = -55 (dBm). That is, the interference signal strength received by the test equipment is ≤ -55dBm (depending on the attenuation value set by the attenuator).

[0133] However, if this application is used (based on the first interference transmission path, to...) Figure 6 For example, assuming the first amplifier amplifies the signal by 30dB, the interference signal strength received by the device under test (DUT) is Rx = 15 - 20 - 5 - 25 + 30 = -5 (dBm). That is, the interference signal strength received by the DUT is ≤ -5dBm (depending on the attenuation value set by the attenuator). The dynamic range of the interference signal strength increases by 50dB (reducing the 20dB attenuation in the air interface environment and increasing the amplifier by 30dB). Therefore, this application can test the Wi-Fi anti-interference performance under strong, medium, and weak interference signal strengths.

[0134] It should be noted that, unlike signal generators (which emit interference signals that do not conform to the interaction logic of the Wi-Fi protocol, neither responding with ACKs to received data frames nor with management frames, nor monitoring channel busy levels for backoff; using a signal generator as an interference source is not practically meaningful), the strong, medium, and weak interference signals in this application all originate from Wi-Fi devices (wireless access points, APs), strictly adhere to the Wi-Fi protocol, and conform to the interaction logic of actual usage scenarios.

[0135] The interference device described in this application, through an interference-side signal transmission path with an amplifier, improves the dynamic range of the interference signal and solves the problem of hidden nodes. This application employs a method of extracting the signal through a second shielded environment, and the intensity of the interference signal after extraction does not change with the position of the device in the interference unit, which is more conducive to environmental solidification. Furthermore, this application adds a path (auxiliary-side signal transmission path) that enables interaction between the interference device and auxiliary devices, ensuring the stability of the interference signal and improving the accuracy of the test.

[0136] Based on the same inventive concept, this application also provides a wireless anti-interference testing system based on the aforementioned interference device. The solution provided by this system is similar to the solution described in the interference device above. Therefore, the specific limitations in one or more wireless anti-interference testing system embodiments provided below can be found in the limitations of the interference device described above, and will not be repeated here.

[0137] In one embodiment, such as Figure 9 As shown, a wireless anti-interference testing system is provided, including a testing device 10 and an interference device 20 as described above; wherein:

[0138] The testing apparatus 10 may include the device under test and the accompanying device in a first shielded environment;

[0139] The system also includes a computer device 30 connected to the device under test; the computer device 30 is used to acquire test data when the device under test and the device under test are communicating wirelessly in the presence of interference signals propagating in the first shielded environment.

[0140] Specifically, the test apparatus 10 includes at least one device in a first shielded environment. In some examples, the test apparatus 10 includes a device under test (DUT) and a companion device in the first shielded environment. The interference device 20 includes an interference unit 200 and a signal transmission unit 300. The interference unit 200 may include an interference device and an auxiliary device in a second shielded environment. In this system, the interference device 20 is used to provide interference signals of different signal strengths to the test apparatus 10. The computer device 30 is used to acquire test data when the DUT and the companion device are communicating wirelessly.

[0141] In one embodiment, the computer device is configured with testing tools for acquiring test data, including throughput.

[0142] Specifically, the test data may include throughput (the amount of data transmitted per second, Mbits / s), and the computer device 30 is equipped with test tools for acquiring the test data, such as Chariot or iperf.

[0143] Furthermore, during the testing process, the computer device 30 can be located either within or outside the first shielded environment; this application does not limit this. For example, assuming the first shielded environment is provided by a shielded box, the computer device 30 can be inside the shielded box for convenient wiring to the test device 10; the computer device 30 can also be outside the shielded box, in which case the shielded box can be equipped with an external wiring port. In some examples, the computer device 30 and the device under test (e.g., a Wi-Fi access point device) can be connected via a network cable.

[0144] In one embodiment, such as Figure 10 As shown, the test setup also includes a test attenuator and a test antenna, both of which are located in the first shielded environment.

[0145] The device under test (DUT), the auxiliary attenuator, and the auxiliary antenna are connected in sequence; the DUT outputs a test signal to the auxiliary attenuator; the test signal processed by the auxiliary attenuator is radiated into the first shielded environment by the auxiliary antenna.

[0146] Specifically, the test apparatus 10 may further include a test attenuator and a test antenna, both located in a first shielded environment. The signal from the device under test (DUT) is routed to the test attenuator via a cable to meet the testing requirements for different signal strengths. The signal is then introduced into the air interface via the test antenna to communicate with the DUT. In some examples, the test attenuator may include a programmable attenuator capable of simulating both far-field and near-field testing requirements.

[0147] It should be noted that, Figure 10 The test apparatus 10 includes two auxiliary antennas, each capable of both receiving and transmitting. In this application, the actual service interaction between the device under test (DUT) and the auxiliary antennas is bidirectional. Furthermore, the auxiliary antennas can be the antennas of the DUT. Taking the DUT as a wireless access point (AP) and the auxiliary antenna as a wireless station (STA) as an example, the test apparatus includes the AP, the auxiliary STA, and a programmable attenuator. The signal from the AP is routed through a cable to the programmable attenuator to meet the testing requirements for different signal strengths, and then introduced into the air interface environment by the AP's antenna to communicate with the auxiliary STA.

[0148] Furthermore, the test signal in this application refers to the signal output by the device under test (DUT). During the test, the auxiliary device under test (ADT) can also transmit the signal received by the DUT. That is, based on the test system of this application, the test can cover the performance of both the uplink and downlink between the DUT and the auxiliary device under test.

[0149] It should be noted that, Figure 10 The specific structure of the signal transmission unit in the jamming device 20 is shown in the previous text. For details, please refer to the description of the jamming device above. It will not be repeated here.

[0150] In one embodiment, the system may further include a first shielding device and a second shielding device; the first shielding device is provided with a first shielding cavity for providing a first shielding environment, and the second shielding device is provided with a second shielding cavity for providing a second shielding environment;

[0151] The system also includes a signal transmission interface located in the first shielded cavity, through which the device under test is connected to the computer equipment;

[0152] The system also includes a turntable located inside the first shielding cavity, with the device under test located at the center of the turntable, and the auxiliary devices set on the turntable at a preset interval relative to the device under test.

[0153] Specifically, the signal transmission interface can be a network cable interface. Furthermore, the first shielding device includes, but is not limited to, a shielding box or a shielded room. The second shielding device includes, but is not limited to, a shielding box or a shielded room.

[0154] Furthermore, the testing system of this application also includes a turntable located within a first shielded cavity. The device under test (DUT) is positioned at the center of the turntable, and a companion device is positioned on the turntable at a preset distance from the DUT. That is, in this application, the DUT can be placed on an adjustable-angle turntable to meet testing requirements at different angles. The preset distance can refer to the distance between the DUT and the companion device, which ranges from 3m to 10m. Taking the DUT as a wireless access point (AP) and the companion device as a wireless station (STA) as an example, this application proposes a fixed distance of 3m to 10m between the AP and the STA, thereby better simulating the real-world environment.

[0155] In one embodiment, there are multiple auxiliary testing devices, each distributed at a preset angle on the edge of the turntable.

[0156] Specifically, in this application, the device under test (DUT) and the accompanying devices can have a one-to-one relationship, ensuring that the placement and orientation of the accompanying devices are consistent, making the testing more rigorous. Alternatively, the DUT and accompanying devices can have a one-to-many relationship, meaning one DUT corresponds to multiple accompanying devices, allowing testing at multiple angles and directions. The turntable can traverse typical angles within a 360° radius, such as 45°, 90°, and 135°. In a specific example, the accompanying devices are distributed at preset angles along the edge of the turntable. Specifically, each accompanying device can be placed at one of the four corners of the 360° turntable. This ensures that each accompanying device traverses the same angles and positions during a full rotation, making the testing fairer and more rigorous.

[0157] In one embodiment, such as Figure 11 As shown, the device under test is the first wireless access point, and the device under test is the first wireless station; the first wireless access point communicates with the first wireless station through the first channel;

[0158] The device under test is the second wireless access point, and the auxiliary device is the second wireless station; the second wireless access point communicates with the second wireless station through the second channel;

[0159] There are multiple interference units, and the second shielding environment corresponding to each interference unit is independent of each other; wherein, the second channel of at least one interference unit and the first channel are the same channel under the same frequency band.

[0160] In one embodiment, the second channel of at least one interference unit and the first channel are two adjacent channels in the same frequency band, and the frequency range of the first channel partially overlaps with the frequency range of the second channel.

[0161] In one embodiment, the second channel of at least one interference unit and the first channel are two adjacent channels in the same frequency band, and the frequency range of the first channel does not overlap with the frequency range of the second channel.

[0162] Specifically, this application can extend to different interference frequency bands, including co-channel interference environments, adjacent-channel interference environments, and overlapping-channel interference environments. Co-channel refers to the second channel and the first channel being the same channel within the same frequency band. Adjacent-channel refers to the second channel and the first channel being adjacent channels within the same frequency band, where the frequency ranges of the first channel and the second channel do not overlap. Overlapping-channel refers to the second channel and the first channel being adjacent channels within the same frequency band, where the frequency ranges of the first channel and the second channel partially overlap.

[0163] In practical applications, co-channel interference, adjacent-channel interference, and overlapping-channel interference are common. Taking Wi-Fi testing as an example, based on the spectrum distribution, Wi-Fi interference can be categorized into co-channel interference, adjacent-channel interference, and overlapping-channel interference. For instance, if the device under test (DUT) operates on channel 1 of the 2.4 GHz 20 MHz bandwidth, and the interfering signal is also on the 2.4 GHz 20 MHz bandwidth, then if the interfering signal is on channel 1, it is co-channel interference. If the interfering signal is on channel 5, it is adjacent-channel interference. If the interfering signal is on channel 3, it is overlapping-channel interference.

[0164] like Figure 11 As shown, the test system in this application embodiment can be extended to co-channel interference environment, adjacent channel interference environment, and overlapping frequency interference environment. This application can test the performance under a single interference condition individually, or combine them to evaluate the performance under a real-world scenario, i.e., combined interference condition. Furthermore, as... Figure 12 As shown, in the test system of this application, the first amplifier can have multiple amplification channels, and the second amplifier can also have multiple amplification channels, that is, it adopts an amplifier with multi-channel amplification function, and each channel can amplify by a specified factor. Simultaneously, the first attenuator can also be a multi-channel attenuator. In actual testing, compared to... Figure 11 In this design, each interference unit uses an amplifier and an attenuator. Figure 12 You can reuse only one multiplexer and one multiplexer.

[0165] In one embodiment, such as Figure 13 As shown, the device under test includes a wireless access point, and the accompanying device includes a wireless station.

[0166] There are multiple interference units, and the second shielding environment corresponding to each interference unit is independent of each other; wherein, at least one interference device in the interference unit is one of a wireless access point, a Bluetooth master device, and a network device, and the auxiliary device corresponds to a wireless station, a Bluetooth slave device, or a terminal device.

[0167] Specifically, this application can also implement extensions for different types of interference. For example... Figure 13 As shown, the interference environment can extend beyond Wi-Fi signal interference to include interference from BT, LTE, and other signals. These signals may overlap with Wi-Fi signals in the spectrum, resulting in mutual interference. The Bluetooth master device can be a Bluetooth speaker, the Bluetooth slave device can be a mobile phone, and the network device can be a base station; this application does not limit this.

[0168] Furthermore, such as Figure 14As shown, in the test system of this application embodiment, the first amplifier can have multiple amplification channels, and the second amplifier can also have multiple amplification channels, that is, an amplifier with multi-channel amplification function is used, and each channel can amplify by a specified factor. Simultaneously, the first attenuator can also be an attenuator with multi-channel function. In actual testing, compared to... Figure 13 In this design, each interference unit uses an amplifier and an attenuator. Figure 14 Only one multiplexer and one multiplexer attenuator need to be reused. Therefore, this application can accommodate other types of interference and is closer to real-world scenarios.

[0169] The testing system of this application improves the dynamic range of the interference signal and solves the hidden node problem by adding an amplifier interference device to the corresponding path. Since the interference signal intensity is not affected by changes in the location of the interference device after being led out by cable, it is more conducive to environmental solidification. This application can expand to various interference scenarios, making the testing more accurate.

[0170] Those skilled in the art will understand that Figure 10-14 The structure shown is merely a block diagram of a portion of the structure related to the solution of this application, and does not constitute a limitation on the components and devices applied thereto. Specific components and devices may include more or fewer parts than shown in the figure, or combine certain parts, or have different component arrangements.

[0171] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0172] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. An interference device, characterized in that, The interference device is used to perform anti-interference testing on at least one device in a first shielded environment; The interference device includes an interference unit and a signal transmission unit; the interference unit includes interference equipment and auxiliary equipment located in a second shielded environment; the signal transmission unit is configured with an interference-side signal transmission path and an auxiliary-side signal transmission path, wherein: The interference-side signal transmission path includes a first interference transmission path and a second interference transmission path connected to the interference device; the first interference transmission path is configured to receive downlink wireless signals output by the interference device through the second shielding environment, process the downlink wireless signals, and transmit the processed downlink wireless signals as interference signals to the first shielding environment; the second interference transmission path is configured to transmit uplink wireless signals propagating in the first shielding environment from the auxiliary device to the second shielding environment. The auxiliary side signal transmission path is configured to transmit the downlink wireless signal propagating in the first shielded environment to the second shielded environment, and to transmit the uplink wireless signal output by the auxiliary device to the first shielded environment.

2. The interference device according to claim 1, characterized in that, The jamming device is connected to the auxiliary device via an air interface.

3. The interference device according to claim 1, characterized in that, The first interference transmission path includes: A first amplifier is configured to amplify the received downlink wireless signal and output the amplified downlink wireless signal. The first attenuator is configured to attenuate the amplified downlink wireless signal and output the attenuated downlink wireless signal. A first antenna, located in the first shielding environment, is configured to radiate the attenuated downlink wireless signal into the first shielding environment.

4. The interference device according to claim 3, characterized in that, The at least one device in the first shielded environment includes a device under test (DUT) and a companion device, wherein the DUT is connected to the companion device via an air interface.

5. The interference device according to claim 4, characterized in that, The first attenuator includes a programmable attenuator; the attenuation value of the first attenuator is determined based on the amplification factor of the first amplifier and the range of received signal strength of the accompanying test device.

6. The interference device according to any one of claims 3 to 5, characterized in that, The interference unit includes multiple units, and the second shielding environment corresponding to each interference unit is independent of each other.

7. The interference device according to claim 6, characterized in that, The first amplifier includes multiple amplification channels, the input terminal of each amplification channel is connected to the corresponding interference unit, and the output terminal of each amplification channel is connected to the input terminal of the first attenuator.

8. The interference device according to claim 1, characterized in that, The second interference transmission path includes: A second antenna, located in the first shielding environment, is configured to receive the uplink wireless signal; The second amplifier is configured to amplify the received uplink wireless signal and transmit the amplified uplink wireless signal to the jamming device.

9. The interference device according to claim 8, characterized in that, The interference unit includes multiple units, and the second shielding environment corresponding to each interference unit is independent of each other.

10. The interference device according to claim 9, characterized in that, The second amplifier includes multiple amplification channels, the input of each amplification channel is connected to the second antenna, and the output of each amplification channel is connected to the corresponding interference unit.

11. The interference device according to claim 1, characterized in that, The auxiliary side signal transmission path includes a third antenna in the first shielding environment and a fourth antenna in the second shielding environment; the third antenna and the fourth antenna are connected by a wire. The third antenna is used to transmit the received downlink wireless signal to the fourth antenna and to radiate the received uplink wireless signal into the first shielding environment. The fourth antenna is used to transmit the received uplink wireless signal to the third antenna and to radiate the received downlink wireless signal into the second shielding environment.

12. The interference device according to claim 11, characterized in that, The third antenna includes an omnidirectional antenna; the fourth antenna includes an omnidirectional antenna.

13. The interference device according to claim 1, characterized in that, The operating frequency bands of the interference signals include the 5G band and the 2.4G band; The downlink radio signal is obtained by the jamming device processing downlink data packets; the uplink radio signal is obtained by the auxiliary device processing uplink data packets; the number of bytes in the downlink data packet is the same as the number of bytes in the uplink data packet.

14. A wireless anti-interference testing system, characterized in that, Includes a testing apparatus and an interference device as described in any one of claims 1 to 13; wherein: The testing apparatus includes the device under test and a companion device in a first shielded environment; The system further includes a computer device connected to the device under test; the computer device is used to acquire test data when the interference signal propagates in the first shielding environment and the device under test is wirelessly communicating.

15. The wireless anti-interference testing system according to claim 14, characterized in that, The computer device is equipped with testing tools for acquiring the test data; the test data includes throughput.

16. The wireless anti-interference testing system according to claim 14, characterized in that, The testing device also includes a test attenuator and a test antenna, both of which are located in the first shielded environment. The device under test (DUT), the accompanying attenuator, and the accompanying antenna are connected in sequence; wherein, the DUT outputs a test signal to the accompanying attenuator; the test signal, after being processed by the accompanying attenuator, is radiated into the first shielded environment by the accompanying antenna.

17. The wireless anti-interference testing system according to any one of claims 14 to 16, characterized in that, The system further includes a first shielding device and a second shielding device; the first shielding device is provided with a first shielding cavity for providing the first shielding environment, and the second shielding device is provided with a second shielding cavity for providing the second shielding environment. The system also includes a signal transmission interface located within the first shielding cavity, through which the device under test is connected to the computer equipment. The system also includes a turntable located inside the first shielding cavity, the device under test (DUT) is located at the center of the turntable, and the accompanying device is positioned on the turntable at a preset interval relative to the DUT.

18. The wireless anti-interference testing system according to claim 17, characterized in that, The number of accompanying testing devices is multiple, and each of the accompanying testing devices is distributed at a preset angle on the edge of the turntable.

19. The wireless anti-interference testing system according to claim 14, characterized in that, The device under test is a first wireless access point, and the accompanying device is a first wireless station; the first wireless access point communicates with the first wireless station through a first channel; The device under test is a second wireless access point, and the auxiliary device is a second wireless station; the second wireless access point communicates with the second wireless station through a second channel; The number of interference units is multiple, and the second shielding environment corresponding to each interference unit is independent of each other; wherein, the second channel of at least one interference unit and the first channel are the same channel under the same frequency band.

20. The wireless anti-interference testing system according to claim 19, characterized in that, At least one of the interference units has its second channel and the first channel as two adjacent channels in the same frequency band, and the frequency range of the first channel partially overlaps with the frequency range of the second channel.

21. The wireless anti-interference testing system according to claim 19 or 20, characterized in that, At least one of the interference units has its second channel and the first channel as two adjacent channels in the same frequency band, and the frequency range of the first channel does not overlap with the frequency range of the second channel.

22. The wireless anti-interference testing system according to claim 14, characterized in that, The device under test includes a wireless access point, and the accompanying device includes a wireless station. The number of interference units is multiple, and the second shielding environment corresponding to each interference unit is independent of each other; wherein, the interference device in at least one of the interference units is one of a wireless access point, a Bluetooth master device, and a network device, and the auxiliary device corresponds to a wireless station, a Bluetooth slave device, or a terminal device.

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