Component and system for analyzing bad accidental radio frequency index of WIFI transmitter
By combining a wireless signal testing device, a control device, an oscilloscope, and a logic analysis device, and using trigger signals to achieve synchronous alignment of digital, intermediate frequency, and radio frequency signals of a WIFI transmitter, the problem of difficulty in analyzing radio frequency performance defects in existing technologies is solved, and the analysis efficiency and system scalability are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENGXUAN TECH (BEIJING) CO LTD
- Filing Date
- 2025-04-29
- Publication Date
- 2026-04-24
AI Technical Summary
Existing technologies cannot simultaneously analyze the synchronization alignment of digital signals, intermediate frequency signals, and radio frequency signals of a WIFI transmitter, making it difficult to accurately pinpoint the cause of occasional radio frequency performance issues.
By combining a wireless signal testing device, a control device, an oscilloscope, and a logic analysis device, and using a trigger signal as a time base point, the time alignment of digital signals, intermediate frequency signals, and radio frequency signals is achieved, and the signals are output to the logic analysis device, the oscilloscope, and the wireless signal analysis device, respectively.
It enables accurate localization of RF performance defects in WIFI transmitters, improving analysis efficiency and system scalability and flexibility.
Smart Images
Figure CN224164831U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of transmitter testing technology, and more specifically, to a component and system for analyzing intermittent radio frequency performance defects in WIFI transmitters. Background Technology
[0002] Currently, Wi-Fi communication protocol, as a practical wireless communication technology, is widely used in an increasing number of consumer electronics products. However, during the actual application of Wi-Fi technology in products, poor performance of the transmitted radio frequency signal often affects the actual network throughput, ultimately leading to network lag for users.
[0003] To address the aforementioned issues, the industry typically resolves them by testing the RF performance of the RF transmitter using a wireless signal tester in non-signaling scenarios. Specifically, this involves a PC sending control commands to the RF transmitter via a UART interface. The RF transmitter responds to the relevant control information in the control commands and transmits matching data packets based on the specific control information. These transmitted data packets are then transmitted to the wireless signal tester via the RF link. The wireless signal tester, using its built-in hardware and software, calculates the received RF signal performance.
[0004] However, current wireless signal testers can acquire and retain poor data packets, but to further analyze the specific reasons for the poor performance, it is necessary to extract the behavior of each component on the RF transmitter's transmission link at this time. Therefore, the synchronization and alignment of the RF signal transmitted by the RF transmitter, the intermediate frequency signal on the analog link, and the digital signal of the baseband part on the time axis is essential. However, there are currently no mature products on the market that can simultaneously analyze RF signals, intermediate frequency signals, and digital baseband signals. Utility Model Content
[0005] This invention addresses the aforementioned problems in the prior art. A component and system are needed for analyzing intermittent radio frequency (RF) performance issues in Wi-Fi transmitters. This system can simultaneously configure and output digital, intermediate frequency (IF), and radio frequency (RF) signals to a logic analysis device, an oscilloscope, and a wireless signal analysis device, respectively. It uses a trigger signal as a time base to align these three types of debugging signals (digital, analog IF, and RF) on the time axis for further problem analysis.
[0006] This application provides a component for analyzing intermittent radio frequency (RF) performance issues in a Wi-Fi transmitter. The component includes a wireless signal testing device, a control device, an oscilloscope, and a logic analysis device. The wireless signal testing device, connected to the Wi-Fi transmitter and the control device, acquires the RF signal emitted by the Wi-Fi transmitter and tests the RF performance based on the RF signal. When the RF performance exceeds a preset value, it sends an identification message to the control device. The control device, connected to the Wi-Fi transmitter and the wireless signal testing device, receives and responds to the identification message by sending a trigger command to the Wi-Fi transmitter, causing the Wi-Fi transmitter to generate a trigger signal based on the trigger command. The oscilloscope, connected to the Wi-Fi transmitter, responds to the trigger signal and begins acquiring intermediate frequency (IF) signals based on the trigger signal. The logic analysis device, connected to the Wi-Fi transmitter, responds to the trigger signal and begins acquiring digital signals based on the trigger signal, enabling time alignment of the digital signals, IF signals, and RF signals, thereby facilitating the analysis of the specific causes of poor RF performance.
[0007] In some embodiments, the trigger signal includes a level change or a characteristic sequence of the GPIO pin of the WIFI transmitter. The characteristic sequence is used to indicate an error in the radio frequency signal. The trigger signal serves as a time base point, which is beneficial for time alignment of the three types of debugging signals.
[0008] In some embodiments, the level change of the GPIO pin of the WIFI transmitter includes: pulling the GPIO pin of the WIFI transmitter from low level to high level or from high level to low level, so that the oscilloscope and logic analysis device can quickly identify the WIFI transmitter having intermittently bad data packets based on the level change.
[0009] In some embodiments, the control device is further configured to send control commands to the WIFI transmitter, so that the WIFI transmitter controls the state of the radio frequency link and the transmission or reception of radio frequency data packets based on the control commands, thereby realizing the regulation of the transmission state of the WIFI transmitter.
[0010] In some embodiments, the control device is further configured to: detect whether the identification information is received at a preset time interval, thereby being able to determine whether there is a problem with the transmission status of the WIFI transmitter based on the identification information.
[0011] In some embodiments, the control device is further configured to: send control commands to the WIFI transmitter via a UART interface; and, upon detecting the identification information, send a trigger command to the WIFI transmitter via an I2C interface. Sending different commands through different interfaces makes the various functional modules of the system clearer and more defined, facilitating development, debugging, and maintenance. It also makes it easier to add new functions or commands to different interfaces without significantly impacting other modules, thus improving the system's scalability and flexibility.
[0012] In some embodiments, the radio frequency (RF) metrics include the signal strength, frequency, and / or bandwidth of the RF signal.
[0013] In some embodiments, the identification information includes error codes or warning signals to indicate that the wireless signal testing device has detected radio frequency data packets whose radio frequency indicators exceed preset values.
[0014] In some embodiments, the WIFI transmitter responds to the trigger signal by simultaneously transmitting relevant digital signals, intermediate frequency signals, and radio frequency signals to the logic analysis device, oscilloscope, and wireless signal testing device, respectively, to align the instantaneous data measured on different instruments in time.
[0015] In some embodiments, a system for analyzing intermittent radio frequency (RF) performance defects of a Wi-Fi transmitter is provided. The system includes the components for analyzing intermittent RF performance defects of a Wi-Fi transmitter and the Wi-Fi transmitter as described in various embodiments of this application.
[0016] Compared with the prior art, the beneficial effects of the embodiments of this application are as follows:
[0017] The component provided in this application for analyzing intermittent radio frequency (RF) performance issues in a Wi-Fi transmitter involves a wireless signal testing device sending an identification message to a control device when it detects an abnormal RF signal. The control device, communicatively connected to the wireless signal testing device, polls the device. Upon receiving the identification message, it sends a trigger command to the Wi-Fi transmitter. The Wi-Fi transmitter generates a trigger signal based on the trigger command and sends it to an oscilloscope and a logic analysis device communicatively connected to the transmitter. The oscilloscope and logic analysis device respond to the trigger signal and simultaneously capture data using it as a time baseline. This allows for the alignment of digital, intermediate frequency (IF), and radio frequency (RF) signals on the time axis using the trigger signal as a time base, facilitating further analysis of the causes of abnormal transmission status in the Wi-Fi transmitter.
[0018] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description
[0019] In drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The drawings generally illustrate various embodiments by way of example rather than limitation and are used, together with the description and claims, to illustrate the disclosed embodiments. Where appropriate, the same reference numerals are used in all drawings to refer to the same or similar parts. Such embodiments are illustrative and not intended to be exhaustive or exclusive embodiments of the apparatus or method.
[0020] Figure 1 This diagram illustrates a component for analyzing intermittent radio frequency performance defects of a WIFI transmitter, according to an embodiment of this application.
[0021] Figure 2 A flowchart illustrating an embodiment of this application for analyzing intermittent radio frequency performance defects in a WIFI transmitter is shown. Detailed Implementation
[0022] To enable those skilled in the art to better understand the technical solutions of this application, the application will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiments of this application will be further described in detail below with reference to the accompanying drawings and specific examples, but these are not intended to limit the scope of this application.
[0023] The terms "first," "second," and similar words used in this application do not indicate any order, quantity, or importance, but are merely used for distinction. Words such as "including" or "contains" mean that the element preceding the word encompasses the element listed after it, without excluding the possibility of encompassing other elements as well. Terms such as "above," "below," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, this relative positional relationship may also change accordingly.
[0024] All terms used in this application (including technical or scientific terms) have the same meaning as understood by one of ordinary skill in the art to which this application pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein. Devices known to one of ordinary skill in the art may not be discussed in detail, but where appropriate, such devices should be considered part of the specification.
[0025] Figure 1 This diagram illustrates a component for analyzing intermittent radio frequency performance defects of a WIFI transmitter, according to an embodiment of this application.
[0026] The components include a wireless signal testing device 103, a control device 102, an oscilloscope 104, and a logic analysis device 105. The WIFI transmitter 101 serves as the device under test and is communicatively connected to the control device 102. The control device 102 can be a PC, microcontroller, smartphone, tablet computer, digital signal processor, dedicated control chip, or module, etc. This is merely an example and does not constitute a limitation on any specific solution.
[0027] In some other embodiments, the control device 102 is used to send control commands to the WIFI transmitter 101 so that the WIFI transmitter 101 controls the state of the radio frequency link and the transmission or reception of radio frequency data packets based on the control commands.
[0028] The control device 102 can send control commands to the WIFI transmitter 101. These control commands can precisely control the operating status of the WIFI transmitter 101, including the status of the radio frequency link (e.g., on, off, parameter adjustment, etc.) and the transmission or reception of radio frequency data packets (e.g., controlling the timing, rate, and data content of transmission). In this way, the control device 102 can flexibly manage the operation of the WIFI transmitter 101 to meet different application requirements and network environments.
[0029] In some other embodiments, the control device 102 is also configured to send control commands to the WIFI transmitter 101 via a UART interface. UART (Universal Asynchronous Receiver / Transmitter) is a common serial communication interface used for data transmission between devices.
[0030] In this embodiment, the WIFI transmitter 101 communicates with the control device 102 (which may be a computer, embedded device, etc.) via UART. The control commands can be AT Commands (Attention Commands), a command format used to control modems, RF modules, and other communication devices, commonly found in wireless communication devices. By sending specific AT commands, the start, stop, and configuration parameters of the RF link can be controlled.
[0031] The task of the control device 102 is to control the working status of the WIFI transmitter 101, configure radio frequency parameters, and trigger the transmission of data packets.
[0032] After receiving the AT command from the control device 102 via the UART interface, the WIFI transmitter 101 performs corresponding operations according to the command, including turning the RF link on or off, sending or receiving data packets, and performing other RF-related functions. Upon receiving the AT command from the control device 102, the WIFI transmitter 101 sends data packets to the RF link.
[0033] The WIFI transmitter 101 is communicatively connected to the wireless signal testing device 103, and the control device 102 is also communicatively connected to the wireless signal testing device 103. The control device 102 controls the wireless signal testing device 103 to perform tests via a network interface and configures the wireless signal testing device 103 to enter the "on limit fail" test mode.
[0034] The "on limit fail" test mode is an automated testing mode. In this mode, the wireless signal testing device 103 continuously monitors various indicators of the radio frequency signal (such as signal strength, frequency, bandwidth, etc.).
[0035] In this embodiment, the wireless signal testing device 103 is connected to the WIFI transmitter 101 and the control device 102, and is used to acquire the radio frequency signal transmitted by the WIFI transmitter 101, and test the radio frequency indicators based on the radio frequency signal. When the radio frequency indicators exceed the preset value, the device sends identification information to the control device 102 which is communicatively connected to the wireless signal testing device 103.
[0036] Specifically, if the wireless signal testing device 103 detects that the radio frequency index of the data packet exceeds a preset value (i.e., "exceeds the limit"), it will immediately identify and mark it as a "failure" state. In this case, a response will be triggered to send an identification message (e.g., error code, warning signal, etc.) back to the control link of the control device 102, informing the host computer program that an excessive radio frequency data packet has been detected.
[0037] The radio frequency (RF) metrics include the signal strength, frequency, and / or bandwidth of the RF signal.
[0038] The preset values are not specifically limited and can be set by the user.
[0039] The identification information includes error codes or warning signals, used to indicate that the wireless signal testing device 103 has detected radio frequency data packets whose radio frequency indicators exceed preset values.
[0040] In this embodiment, the identification information plays a crucial indicative role. When the wireless signal testing device 103 detects radio frequency data packets, it will provide identification information in the form of error codes or warning signals if it finds that the radio frequency indicators exceed preset values.
[0041] An error code is a specific combination of numbers or letters that precisely indicates which radio frequency indicator has exceeded a preset value, as well as the extent of the exceedance. For example, error code "EC001" may indicate that the signal strength is outside the normal range, while "EC002" may represent a frequency deviation.
[0042] Warning signals can take the form of sounds, lights, or specific symbols displayed on the screen. For example, when an abnormality in radio frequency parameters is detected, a red indicator light on the device will illuminate, or an alarm will sound.
[0043] In other embodiments, the control device 102 is connected to the WIFI transmitter 101 and the wireless signal testing device 103, and is used to detect whether the identification information has been received at preset time intervals. That is, the control device 102 detects whether there is returned identification information by polling.
[0044] In this embodiment of the application, the control device 102 is further configured to receive and respond to the identification information, and send a trigger command to the WIFI transmitter 101, so that the WIFI transmitter 101 generates a trigger signal based on the trigger command.
[0045] The control device 102 obtains identification information based on the control link. Based on the identification information, it determines that the wireless signal testing device 103 has detected a data packet with poor radio frequency performance. At this time, it sends a trigger command to the WIFI transmitter 101, informing the WIFI transmitter 101 that a specific operation needs to be performed. After receiving the trigger command sent by the control device 102, the WIFI transmitter 101 generates a trigger signal based on the command.
[0046] In response to the trigger signal, the WIFI transmitter 101 simultaneously transmits relevant digital signals, intermediate frequency signals, and radio frequency signals to the logic analysis device 105, the oscilloscope 104, and the wireless signal testing device 103, respectively.
[0047] In some other embodiments, the control device 102 is also configured to send a trigger command to the WIFI transmitter 101 via an I2C interface when the identification information is detected.
[0048] The trigger signal includes a level change or a characteristic sequence of the GPIO pin of the WIFI transmitter 101, and the characteristic sequence is used to indicate an error in the radio frequency signal.
[0049] GPIO pins are used for device status indication and control. By configuring the GPIO pins of the WIFI transmitter 101 through the I2C interface, control signal exchange between the control device 102 and the WIFI transmitter 101 can be realized.
[0050] For example, pulling a GPIO pin high (setting it to a high level) may indicate an "active" or "ready" state, suggesting that the device is ready to proceed to the next step. By changing the level of the GPIO pin, the control device 102 can synchronize with the WIFI transmitter 101.
[0051] During testing, the detection of identification information and changes in GPIO levels can help achieve timing control of the test, ensuring that the device performs specific operations at the correct time.
[0052] The control device 102 detects the identification information by polling and configures the GPIO of the WIFI transmitter 101 to be pulled high from low level through the I2C interface. This can be used to control the device status, synchronize the test process, ensure accurate signal transmission, and reduce external interference.
[0053] In other words, the level change of the GPIO pin of the WIFI transmitter 101 includes pulling the GPIO pin of the WIFI transmitter 101 from low level to high level or pulling it from high level to low level.
[0054] In this embodiment, the oscilloscope 104 and the logic analysis device 105 are each communicatively connected to the WIFI transmitter 101 and are used to capture intermediate frequency signals and digital signals, respectively.
[0055] In some other embodiments, the control device 102 pre-sets the oscilloscope 104 and the logic analysis device 105 to trigger mode.
[0056] The oscilloscope 104 is connected to the WIFI transmitter 101 and is used to start acquiring intermediate frequency signals based on the trigger signal in response to the trigger signal; the logic analysis device 105 is connected to the WIFI transmitter 101 and is used to start acquiring digital signals based on the trigger signal in response to the trigger signal, so as to enable time alignment of the digital signals, intermediate frequency signals and radio frequency signals.
[0057] When the trigger signal is the GPIO pin of the WIFI transmitter 101 pulled high from low level, and the oscilloscope 104 and logic analysis device 105 are in trigger mode, data capture is initiated when the oscilloscope 104 and logic analysis device 105 detect a change in GPIO from low to high. At this time, the trigger signal on the oscilloscope 104 and logic analysis device 105 serves as a time base point, making it easy to align the intermediate frequency signal on the oscilloscope 104, the digital signal on the logic analysis device 105, and the radio frequency signal on the wireless signal testing device 103 in time.
[0058] In this way, by setting a trigger event, the oscilloscope 104 and the logic analysis device 105 are ensured to start acquiring data at the same time, so that all signal data can be compared and analyzed on the time axis.
[0059] On the oscilloscope 104, logic analysis device 105, and wireless signal testing device 103, the start time of their data acquisition is synchronized by setting "trigger conditions" (such as "GPIO change from low to high"). Once the trigger condition is met, data recording begins according to the set time base (usually the trigger signal). This means that all devices will start data acquisition at the same time. Although intermediate frequency signals, digital signals, and radio frequency signals have different signal characteristics (frequency range, waveform, etc.), they can all be ensured to start recording at the same time through a common trigger condition. In this way, during later analysis, the data of these signals can be compared to analyze the cause of the intermittent radio frequency performance defects of the WIFI transmitter 101 data packets.
[0060] Exemplarily, the steps for radio frequency signal detection based on the components provided in various embodiments of this application are as follows: Figure 2 As shown.
[0061] In step S201, the wireless signal testing device is initialized and configured, for example, by checking the wireless signal testing device, setting basic parameters, or configuring test parameters. In step S202, the PC configures the WIFI transmitter to enter the transmission mode and configures the intermediate frequency signal synchronous output. In step S203, the wireless signal testing device continuously measures the RF indicators. In step S204, it is determined whether the indicators meet the requirements. If the determination result is yes, step S203 is continued. If the determination result is no, step S205 is executed, and the PC configures one GPIO of the WIFI transmitter to be pulled high as a trigger signal output to the oscilloscope or logic analysis device. In step S206, based on the trigger signal as the time base point on the oscilloscope or logic analysis device, packets with intermittent poor RF indicators can be found.
[0062] In other embodiments of this application, a system for analyzing intermittent radio frequency (RF) performance defects of a Wi-Fi transmitter is provided. The system includes the components for analyzing intermittent RF performance defects of a Wi-Fi transmitter and the Wi-Fi transmitter described in various embodiments of this application.
[0063] The components can be any of the above embodiments, and will not be described in detail here.
[0064] In this system, the aforementioned components can be used to monitor the radio frequency signals of the WIFI transmitter. After detecting data packets with intermittent radio frequency defects, the trigger signal can be used as a time base point to align the digital signals, intermediate frequency signals, and radio frequency signals collected by different devices in time, which is beneficial for analyzing the reasons for the occurrence of defective data packets in the WIFI transmitter.
[0065] Furthermore, although exemplary embodiments have been described herein, their scope includes any and all embodiments based on this application that have equivalent elements, modifications, omissions, combinations (e.g., schemes involving intersections of various embodiments), adaptations, or alterations. Elements in the claims will be interpreted broadly based on the language used in the claims and are not limited to the examples described in this specification or during the implementation of this application, which will be interpreted as non-exclusive. Therefore, this specification and examples are intended to be considered illustrative only, and the true scope and spirit are indicated by the full scope of the claims and their equivalents.
[0066] The above description is intended to be illustrative and not restrictive. For example, the above examples (or one or more of them) can be used in combination with each other. Other embodiments may be used by those skilled in the art upon reading the above description. Furthermore, in the above detailed description, various features may be grouped together to simplify the application. This should not be construed as an intention that a disclosed feature not claimed is necessary for any claim. Rather, the subject matter of the application may be less than all the features of a particular disclosed embodiment. Thus, the claims are incorporated herein by reference as examples or embodiments, wherein each claim is an independent, separate embodiment, and these embodiments are contemplated as being combined with each other in various combinations or arrangements. The scope of this application should be determined by reference to the appended claims and the full scope of their equivalents.
[0067] The above embodiments are merely exemplary embodiments of this application and are not intended to limit this application. The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.
Claims
1. A component for analyzing intermittent radio frequency performance defects in a WIFI transmitter, characterized in that, The components include a wireless signal testing device, a control device, an oscilloscope, and a logic analysis device: wherein, A wireless signal testing device is connected to a WIFI transmitter and a control device to acquire the radio frequency signal emitted by the WIFI transmitter, test the radio frequency indicators based on the radio frequency signal, and send identification information to the control device when the radio frequency indicators exceed the preset value. A control device, connected to the WIFI transmitter and the wireless signal testing device, is used to receive and respond to the identification information, and send a trigger command to the WIFI transmitter so that the WIFI transmitter generates a trigger signal based on the trigger command; An oscilloscope, connected to the WIFI transmitter, is used to respond to the trigger signal and start acquiring intermediate frequency signals based on the trigger signal; A logic analysis device, connected to the WIFI transmitter, is used to respond to the trigger signal and start acquiring digital signals based on the trigger signal, so as to enable time alignment of the digital signals, intermediate frequency signals and radio frequency signals.
2. The component according to claim 1, characterized in that, The trigger signal includes a level change or a characteristic sequence of the GPIO pin of the WIFI transmitter, and the characteristic sequence is used to indicate an error in the radio frequency signal.
3. The component according to claim 2, characterized in that, The level changes of the GPIO pins of the WIFI transmitter include: pulling the GPIO pins of the WIFI transmitter from low level to high level or pulling them from high level to low level.
4. The component according to claim 1, characterized in that, The control device is further configured to send control commands to the WIFI transmitter, so that the WIFI transmitter controls the state of the radio frequency link and the transmission or reception of radio frequency data packets based on the control commands.
5. The component according to claim 1, characterized in that, The control device is further configured to detect whether the identification information has been received at a preset time interval.
6. The component according to claim 4, characterized in that, The control device is also configured to send control commands to the WIFI transmitter via a UART interface; Upon detecting the identification information, a trigger command is sent to the WIFI transmitter via the I2C interface.
7. The component according to claim 1, characterized in that, The radio frequency (RF) metrics include the signal strength, frequency, and / or bandwidth of the RF signal.
8. The component according to claim 1, characterized in that, The identification information includes error codes or warning signals, used to indicate that the wireless signal testing device has detected radio frequency data packets whose radio frequency indicators exceed preset values.
9. The component according to claim 1, characterized in that, In response to the trigger signal, the WIFI transmitter simultaneously transmits relevant digital signals, intermediate frequency signals, and radio frequency signals to the logic analysis device, oscilloscope, and wireless signal testing device, respectively.
10. A system for analyzing intermittent radio frequency performance defects in WIFI transmitters, characterized in that, The system includes the components for analyzing intermittent radio frequency performance defects of a WIFI transmitter as described in any one of claims 1-9, and the WIFI transmitter.