A radio frequency universal module and WIFI performance and networking test system

Abstract

The implementation example of this application relates to the technical field of WIFI performance testing, and discloses a RF universal module and a WIFI performance and networking test system, the system comprising: a RF universal module, and a mesh networking test system is constructed based on the RF MUX RF multiplexer of the RF universal module; the system comprises 1 access point, 3 extenders and multiple sites to verify the software compatibility of the DUT respectively; the system supports arbitrary switching of the wireless mesh topology, that is, switching of different frequency bands of the same access point and roaming performance testing of different frequency bands between sites at different access points. Through the solution of this application, at least the technical problems such as the difficulty of the prior art in accurately evaluating the performance of the MLO system under different frequency band signal strengths, the complex equipment configuration, the inability to accurately control the signal size of each frequency band, and the insufficient module expansion capability are solved.

Description

Technical Field

[0001] The present application relates to the technical field of WIFI performance testing, and in particular to a radio frequency universal module and a WIFI performance and networking testing system. Background Art

[0002] In the current wireless communication testing field, the evaluation of the overall performance of Wi-Fi multi-link operation (MLO) mainly relies on distance testing or performance testing under the same attenuation conditions in multiple frequency bands. However, this method has significant limitations, namely, it is impossible to independently control the attenuation of signals in different frequency bands, making it difficult to accurately evaluate the performance of the MLO system under different frequency band signal strengths. This defect limits the comprehensive understanding of the actual effectiveness of MLO technology in complex spectrum environments.

[0003] Traditional test solutions usually use multiple dual-band (2.4 / 5G) antennas and a separate 6G antenna to control the path attenuation of each frequency band separately to achieve MLO testing of 2G 4X4, 5G 4X4, and 6G 4X4. However, this solution not only has complex equipment configuration, but also because the frequency of the 5G last channel and the 6G first channel are close, it is easy to cause signal interference between antennas, affecting the precise control of the signal size of each frequency band. Another attempt is to use four tri-band antennas, but this type of solution can often only apply a single attenuation setting to all frequency bands, which cannot meet the needs of fine-grained testing of frequency bands.

[0004] In addition, with the development of communication technology, the module scalability and automation level of test equipment have become important indicators to measure its performance. Although the existing test system has a certain module expansion capability, the expansion capability is still insufficient, and in terms of realizing automatic power on and off control of the device under test (DUT), automatic re-networking, and full-process automated test data output and curve drawing, there is still room for further optimization and improvement.

[0005] In summary, the existing WIFI MLO whole-machine performance test technology has obvious deficiencies in frequency band attenuation control, antenna signal interference suppression, and test automation. There is an urgent need for a new test solution that can overcome the above defects to more accurately evaluate the performance of the MLO system under different frequency band signal conditions and improve the efficiency and automation level of the test. Summary of the invention

[0006] One purpose of the present application is to provide a universal RF module and a WIFI performance and networking test system, at least to solve the problem that the existing technology cannot achieve independent control of signal attenuation in different frequency bands, and thus it is difficult to accurately evaluate the performance of the MLO system under signal strength in different frequency bands. The traditional solution not only has complex equipment configuration, but also easily causes signal interference between antennas, affecting the precise control of the signal size of each frequency band, and technical problems such as insufficient module expansion capability.

[0007] To achieve the above objectives, some implementation examples of this application provide the following aspects:

[0008] In a first aspect, some implementation examples of the present application provide a universal radio frequency module, which can implement a 1-to-4 power divider, an adjustable attenuator, and an RF MUX radio frequency multiplexer; wherein:

[0009] When the RF universal module is configured as a 1-to-4 power splitter, the input signal is connected to the four output ports B1 / B2 / B3 / B4 via the input port B0;

[0010] When the RF universal module is configured as an adjustable attenuator, the four input ports A1 / A2 / A3 / A4 of the adjustable attenuator are respectively connected to the four output ports B1 / B2 / B3 / B4, realizing a four-way adjustable attenuation range of 8-107dB;

[0011] When the RF universal module is configured as an RF MUX, A1 / A2 / A3 / A4 serve as four optional output paths, and the input signal can be selectively routed to any one of A1, A2, A3, and A4 via input port B0 to achieve multiplexing. Each output path supports signals in the WIFI 2.4G / 5G / 6G frequency bands and can perform different attenuation controls on the signals in these frequency bands.

[0012] Furthermore, the signal in the 2.4G frequency band supports an adjustable range of 18-117dB, and the signal in the 5G / 6G frequency band supports an adjustable range of 16-82dB.

[0013] Further, the radio frequency universal module includes a USB serial port and a GPIO interface, the USB serial port is used for the host computer to communicate with the radio frequency universal module; the GPIO interface is used to support the expansion of multiple radio frequency universal modules;

[0014] Different modules are distinguished by plate numbers, and the switch function of 2 DC power sockets is reserved for powering on and off the DUT during automated testing.

[0015] Furthermore, the radio frequency universal module includes a 2.4G / 5G / 6G triple-band logarithmic antenna, a triplexer, and a power splitter;

[0016] The triplexer is used to divide the radio frequency signal on the 2.4G / 5G / 6G triple-band logarithmic antenna interface into three different frequency bands of 2.4G / 5G / 6G, or to merge the signals of the three different frequency bands of 2.4G / 5G / 6G into one 2.4G / 5G / 6G triple-band logarithmic antenna interface;

[0017] The power divider is used to evenly distribute the power of an input signal B0 into four output signals B1 / B2 / B3 / B4, or conversely, to combine the power of signals input through four ports B1 / B2 / B3 / B4 into one output to port B0.

[0018] In the second aspect, some implementation examples of the present application also provide a WIFI performance and networking test system, including the RF universal module as described in the first aspect, and a mesh networking test system is constructed based on the RF MUX RF multiplexer of the RF universal module; the system includes 1 access point, 3 extenders and multiple sites;

[0019] The access point is the central node responsible for providing wireless network access services; the extender is used to expand the network coverage; the site is the terminal device, simulating the actual user equipment for testing;

[0020] The system supports arbitrary switching of wireless mesh topology structures, and can meet the switching of different frequency bands of the same access point and the roaming performance test of different frequency bands of the site between different access points.

[0021] Furthermore, in the three different frequency bands of 2.4G / 5G / 6G, each frequency band uses an independent adjustable attenuator to adjust the signal size, so as to automatically achieve seamless frequency band switching according to the distance during networking testing.

[0022] Furthermore, the 6G frequency band is used at close distances to achieve large capacity, and it automatically switches to 2.4G at long distances.

[0023] Furthermore, a backbone network is constructed by deploying Mesh nodes in 5 GHz, 6 GHz, or 5 GHz+6 GHz frequency bands, and Mesh nodes are connected to various terminal devices in 2.4 GHz, 5 GHz, or 6 GHz frequency bands.

[0024] Furthermore, the system can support the expansion of up to 127 of the RF universal modules; and supports automatic power on and off control of DUT and re-self-networking functions to achieve full automation and output test data and curves.

[0025] Furthermore, the networking process includes:

[0026] When the network is initialized, each node announces its existence by broadcasting OGM messages;

[0027] When a node receives an OGM message, it forwards it according to a certain strategy to ensure that the OGM message can spread throughout the entire network;

[0028] OGM messages are sent and forwarded using the UDP protocol. In this way, each node will receive the OGM message at least once.

[0029] The node parses the MAC address information in the OGM message to understand all reachable nodes and their link quality in the entire network, and maintains the routing path accordingly;

[0030] When there are multiple paths to the same node, the path with the best link quality will be selected for data transmission.

[0031] Compared with the prior art, this application achieves the following beneficial effects:

[0032] (1) Compared with the current WIFI MLO whole-machine performance test, which is performed by pulling the distance or performing the performance test under the same attenuation in multiple frequency bands, and cannot support the attenuation control of different frequency bands, and thus it is inconvenient or impossible to verify the MLO performance under different frequency band signal sizes, the solution provided by this application uses an independent adjustable attenuator to adjust the signal size for each frequency band, which can facilitate the verification requirements of seamless frequency band switching automatically according to the distance during the networking test, including the switching of different frequency bands of the same access point and the roaming of different frequency bands between multiple access points, so as to facilitate the verification of the MLO performance under different frequency band signal sizes; and this application can meet the WIFI rate over range performance simulation, WIFI7 MLO multi-link working performance simulation test, and the performance test of mesh networking band steering and roaming;

[0033] (2) Compared with the existing solution that requires 4 2.4 / 5G dual-band and 4 6G antennas to control the corresponding path attenuation respectively, and considering that the 5G last channel 5825MHz and the 6G first channel 5945MHz are very close, the 6G antenna will receive the 5G signal and the dual-band antenna will receive the 6G signal, thereby affecting the ability of 5G and 6G to control the signal size respectively; or the existing solution uses 4 tri-band antennas, but all frequency bands can only use one attenuation for testing. Compared with this, the present application uses 4 tri-band antennas to complete the MLO test of 2G 4X4, 5G4X4 and 6G 4X4;

[0034] (3) The module of this application has good scalability and can support up to 127 modules; it also supports automatic power on / off control of DUT and self-organizing network again to achieve full automation and output test data and curves;

[0035] (4) The RF universal module of the present application integrates three functions: a 1-to-4 power divider, an adjustable attenuator, and an RF MUX radio frequency multiplexer, achieving a high degree of integration and providing extremely high flexibility. This design reduces the number of individual components required in the system, helps reduce the overall complexity and cost of the system, and improves the reliability and maintainability of the system. The module supports signals in the WIFI 2.4G / 5G / 6G frequency bands, and can perform different attenuation controls on the signals in these frequency bands. By integrating multiple RF functions into one module, it helps to simplify the design and manufacturing process of the system. At the same time, since the connections and interfaces between components are reduced, it also helps to reduce signal loss and interference, thereby optimizing the overall performance of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] One or more implementation examples are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the implementation examples. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0037] Figure 1 A radio frequency connection relationship diagram of a radio frequency universal module provided for an implementation example of this application;

[0038] Figure 2 A control schematic diagram of a single RF universal module provided for an implementation example of this application;

[0039] Figure 3 A schematic diagram of the extended control of multiple RF universal modules provided for the implementation example of this application;

[0040] Figure 4 A system block diagram of a WIFI performance and networking test system provided for an implementation example of this application;

[0041] Figure 5 A schematic diagram of a chain networking method provided for an implementation example of this application;

[0042] Figure 6 A schematic diagram of a star network method provided for an implementation example of this application;

[0043] Figure 7 A schematic diagram of the networking process flow provided for the implementation example of this application;

[0044] Figure 8 This is a schematic diagram of the rate over range experiment consisting of AP and STA in the mesh networking system;

[0045] Fig. 9The expected TP value, the actual TP value and the change of the TP value under the IEEE standard when the attenuation is 3dB step according to the implementation example of this application;

[0046] Fig.10 The example provided in this application provides the expected TP value, the actual TP value and the change of the TP value under the IEEE standard as the test distance increases. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical scheme and advantages of the implementation examples of this application clearer, the technical scheme in the implementation examples of this application will be clearly and completely described below in conjunction with the drawings in the implementation examples of this application. Obviously, the described implementation examples are part of the implementation examples of this application, not all of the implementation examples. Based on the implementation examples in this application, all other implementation examples obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0048] First implementation example

[0049] To solve the above problems, the present invention firstly produces the following universal RF module, which can realize a 1-to-4 power splitter, an adjustable attenuator, and an RF MUX radio frequency multiplexer. Specifically, the universal RF module is described as follows.

[0050] Figure 1 A radio frequency connection relationship diagram of a radio frequency universal module provided for the implementation example of this application, such as Figure 1 As shown, the RF universal module can realize a 1-to-4 power divider, an adjustable attenuator and an RF MUX RF multiplexer; wherein,

[0051] When the RF universal module is configured as a 1-to-4 power splitter, the input signal is connected to the four output ports B1 / B2 / B3 / B4 via the input port B0;

[0052] When the RF universal module is configured as an adjustable attenuator, the four input ports A1 / A2 / A3 / A4 of the adjustable attenuator are connected to the four output ports B1 / B2 / B3 / B4 respectively, realizing a four-way adjustable attenuation range of 8-107dB;

[0053] When the RF universal module is configured as an RF MUX, A1 / A2 / A3 / A4 are four optional output paths, and the input signal can be selectively routed to any one of A1, A2, A3, and A4 through the input port B0 to achieve multiplexing. Each output path supports WIFI 2.4G / 5G / 6G frequency band signals and can perform different attenuation controls on the signals in these frequency bands. Preferably, the 2.4G frequency band signal supports an adjustable range of 18-117dB, and the 5G / 6G frequency band signal supports an adjustable range of 16-82dB. This is very important for MLO and band steering tests, which facilitates the simulation of WIFI performance in different frequency bands at the same distance, and the simulation of the networking behavior of terminals at different distances.

[0054] According to the above implementation example, the module integrates three functions: a 1-to-4 power divider, an adjustable attenuator, and an RF MUX radio frequency multiplexer, achieving high integration and providing extremely high flexibility. This design reduces the number of separate components required in the system, helps to reduce the overall complexity and cost of the system, and improves the reliability and maintainability of the system. The module supports signals in the WIFI 2.4G / 5G / 6G frequency bands, and can perform different attenuation controls on the signals in these frequency bands. This enables the module to adapt to the development of future wireless communication technology and meet the growing frequency band requirements. In addition, by integrating multiple RF functions into one module, the technical solution helps to simplify the design and manufacturing process of the system. At the same time, since the connections and interfaces between components are reduced, it also helps to reduce signal loss and interference, thereby optimizing the overall performance of the system.

[0055] Furthermore, in some implementation examples, in order to facilitate debugging and automatic control, a USB serial port and GPIO are reserved on a single RF general purpose module (module), and the host computer communicates with it through the USB serial port. The control diagram of a single module is as follows: Figure 2 GPIO is used to support multiple module expansions. Different modules are distinguished by board ID. The expansion control diagram of multiple modules is shown in the figure below. Figure 3 As shown in the figure, two DC jack switch functions are reserved to facilitate power on and off operations on the DUT during automated testing.

[0056] Furthermore, the module includes a 2.4G / 5G / 6G triple-band logarithmic antenna, a triplexer, and a power splitter;

[0057] The triplexer is used to divide the RF signal on the 2.4G / 5G / 6G triple-band logarithmic antenna interface into three different frequency bands of 2.4G / 5G / 6G, or to merge the signals of three different frequency bands of 2.4G / 5G / 6G into one 2.4G / 5G / 6G triple-band logarithmic antenna interface;

[0058] The power divider is used to evenly distribute the power of one input signal B0 into four output signals B1 / B2 / B3 / B4, or conversely, to combine the power of signals input through four ports B1 / B2 / B3 / B4 into one output to port B0.

[0059] This application uses a 2G / 5G / 6G triple-band logarithmic antenna to spatially couple the WIFI signal, and then extracts the signals of the three frequency bands respectively through a triplexer. Each frequency band uses an independent adjustable attenuator to adjust the signal size, so as to facilitate the verification requirements of automatic seamless frequency band switching according to the distance during network testing.

[0060] Second implementation example

[0061] Figure 4 A system block diagram of a WIFI performance and networking test system provided for the implementation example of this application, such as Figure 4 As shown, a WIFI performance and networking test system includes a RF universal module as in the first implementation example, and a mesh networking test system is constructed based on the RF MUX RF multiplexer of the RF universal module; the system includes 1 access point (AP), 3 extenders (extenders) and multiple stations (STA); in this implementation example, 2 stations, namely STA1 and STA2, are selected, usually STA1 and STA2 are Android and Apple mobile phones respectively, to verify the software compatibility of DUT respectively. Figure 4 The figure only shows the 1X1 WIFI connection relationship, which can be expanded to 8X8 in theory, but considering the size and practicality of the shielding box, the conventional 4X4 mesh test is sufficient.

[0062] The access point is the central node responsible for providing wireless network access services; the extender is used to expand the network coverage; the site is the terminal device, simulating the actual user equipment for testing;

[0063] The system supports arbitrary switching of wireless mesh topology, i.e. switching between different frequency bands of the same access point and roaming performance testing of different frequency bands between different access points.

[0064] The system can realize arbitrary switching of wireless mesh topology. The following only illustrates two cases. The first is the simplest chain networking mode, such as Figure 5As shown in the figure, to verify the multi-hop WIFI performance, you only need to control the AP and EXT1, and the path attenuation from EXT1 to EXT2, EXT2 to EXT3, and EXT3 to STA1 is small, so that they can communicate with each other, and the remaining paths can be set to the maximum attenuation. The second is to simulate the process of STA1 approaching EXT1 from AP, such as Figure 6 As shown, the performance of STA automatically roaming from AP to EXT1 is verified. Of course, the roaming performance of STA1 to other EXTs can also be simulated as needed. In addition, the wireless connection between any two nodes includes support for three frequency bands: 2 / 5 / 6G. The attenuation of each frequency band can be controlled separately to complete the band steering of different frequency bands. The performance of WIFI7 MLO under different attenuation in different frequency bands can also be verified.

[0065] Furthermore, in the three different frequency bands of 2.4G / 5G / 6G, each frequency band uses an independent adjustable attenuator to adjust the signal size, so as to facilitate the verification requirements of automatic seamless frequency band switching according to the distance during networking testing, including switching between different frequency bands of the same access point and roaming between different frequency bands between multiple access points. For example, at close distances, the 6G frequency band is used to achieve large capacity due to its low attenuation, and at long distances, it automatically switches to 2.4G due to the large attenuation of 6G.

[0066] Furthermore, in this application, the wireless Mesh network design takes into account the characteristics of the working frequency band and the needs of the Mesh network. The backbone network is constructed by deploying Mesh nodes in the 5GHz, 6GHz, or 5GHz+6GHz frequency bands to ensure the communication quality between nodes. The high bandwidth and low interference characteristics of the 5GHz+6GHz frequency band are preferably used to achieve greater network throughput and lower transmission delay. At the same time, the Mesh node automatically prefers to access various terminal devices in the 2.4GHz, 5GHz, or 6GHz frequency bands according to the signal size. At close range, due to the low attenuation, it is preferred to use the high bandwidth advantages of 6G or 5G to achieve large-capacity transmission. At long distances, it is preferred to use the advantages of the slower attenuation and wide coverage of the 2.4GHz frequency band during signal propagation to increase the coverage of each Mesh node and improve the user experience.

[0067] The module provided in the implementation example of this application has good scalability, and the system can support the expansion of up to 127 universal RF modules; and supports automatic power on and off control of DUT and re-self-organizing network functions to achieve full automation and output test data and curves.

[0068] Preferably, in some implementation examples, Figure 7 As shown, the networking process of the implementation example of this application includes:

[0069] When the network is initialized, each node announces its existence by broadcasting OGM (Originator Message) messages, making the network initialization process efficient. This method ensures that all nodes in the network can learn about the existence of other nodes in a short time, thereby speeding up the establishment of the network;

[0070] When a node receives an OGM message, it forwards it according to a certain strategy to ensure that the OGM message can spread throughout the entire network. This mechanism ensures that each node in the network can receive the OGM message at least once;

[0071] OGM messages are sent and forwarded using the UDP protocol. In this way, each node will receive the OGM message at least once, thereby achieving full network coverage of the message and reducing the complexity and delay of network transmission, thereby improving network transmission efficiency;

[0072] The node parses the MAC address information in the OGM message to understand all reachable nodes and their link quality in the entire network, and maintains the routing path accordingly. This enables each node to have a comprehensive understanding of the overall status of the network, providing a basis for subsequent routing selection and data transmission;

[0073] When there are multiple paths to the same node, the path with the best link quality will be selected for data transmission. This optimized path selection method improves the reliability and efficiency of data transmission and reduces transmission delays and data loss caused by improper path selection.

[0074] According to the networking process provided by the above implementation example of this application, the networking process has certain self-organization and adaptability. Nodes can autonomously broadcast, receive and forward OGM messages, and dynamically adjust routing paths according to network conditions. This enables the network to respond quickly when facing node changes or link quality fluctuations, maintaining network stability and connectivity.

[0075] Figure 8 This is a schematic diagram of the rate over range experiment composed of AP and STA in the mesh networking system, which is used to verify that the scheme conforms to the theoretical calculation. Figure 8 The figure only shows the 1x1 connection relationship. For the 4x4 case, you only need to copy 3 copies of the MUX and the corresponding antenna. Taking the 6G 4x4 test as an example, the DUT operating frequency is 6105MHz, the bandwidth is 320MHz, and the direct-view space loss when the distance from the accompanying logarithmic antenna is 10cm is:

[0076] PL1=32.45+20*log(d)+20log(f)=32.45+20*log(0.0001m)+20log(6105MHz)=28dB,

[0077] Considering that the starting fixed attenuation of RF MUX is 16dB and the logarithmic antenna gain is 5dB, the total starting attenuation between AP and STA is PL2=PL1*2+16-5*2=62dB. According to the TX power of AP with different MCS under 320MHz bandwidth and the typical receiving sensitivity of STA, the link budget capability of different MCS is obtained by subtracting the sensitivity from the TX power. Table 1 shows the data related to the modulation and coding scheme (MCS) and link budget (LinkBudget) in the WiFi performance test. These data are usually used to evaluate the performance of WiFi systems under different modulation and coding schemes, including transmit power, receiving sensitivity, link budget, and physical layer rate.

[0078] Table 1 Performance data of WiFi system under different modulation and coding schemes

[0079]

[0080] Assuming that the AP-side antenna gain Gt=3dBi and the STA-side receiving antenna gain Gr=3dBi, the total system loss PL3=PL2-(Gt+Gr)=62-(3+3)=56dB. Table 2 shows the expected TP value, the actual TP value, and the TP value under the IEEE standard when the step attenuation is 3dB. The expected phyrate is calculated by taking the phyrate of the baseline row whose PL3 value is smaller than and closest to the link budget, and then multiplying the expected phyrate by 0.7 to get the expected TP value. After product verification, the actual TP is very close to the expected TP. Only when the attenuation is very high, the working bandwidth will be automatically reduced to 160M / 80 / 20MHz due to the low signal, resulting in a larger difference from the expected value.

[0081] Table 2 Expected TP value, actual TP value and TP value under IEEE standard when attenuation is 3dB step

[0082]

[0083] Fig. 9 The expected TP value, the actual TP value and the change of the TP value under the IEEE standard when the attenuation is 3dB step according to the implementation example of this application; Fig.10 The expected TP value, the actual TP value and the change of the TP value under the IEEE standard as the test distance increases according to the implementation example of this application. Fig. 9 and Fig.10The results show that under most test distances and attenuation conditions, the actual TP value (Actual TP) is very close to the expected TP value (Predicted TP). This shows that the performance prediction model of the product is relatively accurate and can better estimate the throughput (TP) in actual use. Under very high attenuation conditions (i.e., when the distance is far or the signal loss is large), the difference between the actual TP value and the expected TP value increases. This is because the working bandwidth is automatically reduced due to the reduction in signal strength, which affects the actual throughput. The actual TP value and the expected TP value are usually higher than the TP value under the IEEE standard (the TP corresponding to the IEEE PHY Rate), indicating that the performance of the test system in actual applications is better than the minimum performance requirements specified by the IEEE standard. In addition, as the test distance increases and the signal attenuation increases, the throughput gradually decreases. The antenna gain (Gt and Gr) is considered in the system, and the system performance is evaluated by calculating the PL3 value (i.e., the path loss after considering the antenna gain), which shows that the antenna gain has a positive impact on the system performance and can improve the received signal strength and throughput.

[0084] In summary, the test results show that the system has stable performance under different distances and attenuation conditions, and the actual throughput is close to the expected throughput. At the same time, the performance of the system in actual applications is better than the requirements specified by the IEEE standard. However, under high attenuation conditions, the difference between the actual throughput and the expected throughput will increase due to the reduction of signal strength and automatic adjustment of the working bandwidth.

[0085] The flow chart or block diagram in the accompanying drawings shows the possible architecture, function and operation of the equipment, method and computer program product according to various implementation examples of the present application. In this regard, each box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, a program segment or a part of a code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some implementations as replacements, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flow chart, and the combination of the boxes in the block diagram and / or flow chart can be implemented with a dedicated system for hardware that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0086] The scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present application. Any figure mark in the claims should not be regarded as limiting the claims involved. In addition, it is clear that the word "comprising" does not exclude other units or steps, and the singular does not exclude the plural. Multiple units or devices stated in the device claim may also be implemented by one unit or device through software or hardware. The words "first", "second", etc. are only used to distinguish the description, and do not indicate any particular order, nor can they be understood as indicating or implying relative importance.

[0087] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily mention changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims, and the above implementation examples should be regarded as exemplary and non-restrictive.

Claims

1. A radio frequency universal module, characterized in that: This RF universal module can realize a 1-to-4 power divider, an adjustable attenuator and an RF MUX radio frequency multiplexer; among which, When the RF universal module is configured as a 1-to-4 power splitter, the input signal is connected to the four output ports B1 / B2 / B3 / B4 via the input port B0; When the RF universal module is configured as an adjustable attenuator, the four input ports A1 / A2 / A3 / A4 of the adjustable attenuator are respectively connected to the four output ports B1 / B2 / B3 / B4, realizing a four-way adjustable attenuation range of 8-107dB; When the RF universal module is configured as an RF MUX, A1 / A2 / A3 / A4 serve as four optional output paths, and the input signal can be selectively routed to any one of A1, A2, A3, and A4 via input port B0 to achieve multiplexing. Each output path supports signals in the WIFI 2.4G / 5G / 6G frequency bands and can perform different attenuation controls on the signals in these frequency bands.

2. The radio frequency universal module according to claim 1, characterized in that: in, The signals in the 2.4G band support an adjustable range of 18-117dB, and the signals in the 5G / 6G band support an adjustable range of 16-82dB.

3. The radio frequency universal module according to claim 1 or 2, characterized in that: in, The radio frequency universal module includes a USB serial port and a GPIO interface, wherein the USB serial port is used for communication between the host computer and the radio frequency universal module; and the GPIO interface is used to support the expansion of multiple radio frequency universal modules; Different modules are distinguished by plate numbers, and the switch function of 2 DC power sockets is reserved for powering on and off the DUT during automated testing.

4. The radio frequency universal module according to claim 3, characterized in that: Including 2.4G / 5G / 6G triple-band logarithmic antenna, triplexer, and power splitter; The triplexer is used to divide the radio frequency signal on the 2.4G / 5G / 6G triple-band logarithmic antenna interface into three different frequency bands of 2.4G / 5G / 6G, or to merge the signals of the three different frequency bands of 2.4G / 5G / 6G into one 2.4G / 5G / 6G triple-band logarithmic antenna interface; The power divider is used to evenly distribute the power of an input signal B0 into four output signals B1 / B2 / B3 / B4, or conversely, to combine the power of signals input through four ports B1 / B2 / B3 / B4 into one output to port B0.

5. A WIFI performance and networking test system, characterized in that: A mesh networking test system comprising a universal radio frequency module as described in any one of claims 1 to 4, and a RF MUX radio frequency multiplexer based on the universal radio frequency module; the system comprises 1 access point, 3 extenders and multiple sites; The access point is the central node responsible for providing wireless network access services; the extender is used to expand the network coverage; the site is the terminal device, simulating the actual user equipment for testing; The system supports arbitrary switching of wireless mesh topology structures, and can meet the switching of different frequency bands of the same access point and the roaming performance test of different frequency bands of the site between different access points.

6. The system according to claim 5, characterized in that in, In the three different frequency bands of 2.4G / 5G / 6G, each frequency band uses an independent adjustable attenuator to adjust the signal size to ensure seamless frequency band switching according to the distance during networking testing.

7. The system according to claim 6, characterized in that in, It uses the 6G band for large capacity at close distances and automatically switches to 2.4G at long distances.

8. The system according to claim 7, characterized in that in, The backbone network is built by deploying Mesh nodes in the 5GHz, 6GHz, or 5GHz+6GHz frequency bands, and Mesh nodes are connected to various terminal devices in the 2.4GHz, 5GHz, or 6GHz frequency bands.

9. The system according to claim 5, characterized in that in, The system can support the expansion of up to 127 RF universal modules; and supports DUT automatic power on / off control and re-self-networking functions to achieve full automation and output test data and curves.

10. The system according to claim 5, characterized in that in, The networking process includes: When the network is initialized, each node announces its existence by broadcasting OGM messages; When a node receives an OGM message, it forwards it according to a certain strategy to ensure that the OGM message can spread throughout the entire network; OGM messages are sent and forwarded using the UDP protocol. In this way, each node will receive the OGM message at least once. The node parses the MAC address information in the OGM message to understand all reachable nodes and their link quality in the entire network, and maintains the routing path accordingly; When there are multiple paths to the same node, the path with the best link quality will be selected for data transmission.

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