Signal monitoring system
By adopting a one-to-many master-slave system architecture and utilizing the wireless connection between IoT communication modules and slave devices, full-band signal monitoring is achieved, solving the problems of high monitoring accuracy and high cost in existing technologies, and realizing high-precision and low-cost signal monitoring.
Patent Information
- Application Number
- CN202520414028.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-11
AI Technical Summary
Existing monitoring equipment can only perform one-to-one signal monitoring and cannot monitor frequencies and bands other than the target frequency, resulting in low monitoring accuracy and signal quality, as well as high deployment costs.
It adopts a one-to-many master-slave system architecture, and realizes full-band signal monitoring through wireless connection between the IoT communication module and the slave device. The baseband signal processor is used for mixing and demodulation, and the monitoring results are uploaded to the cloud server.
It achieves full-band signal monitoring, greatly improving monitoring accuracy and signal quality, while reducing deployment costs.
Smart Images
Figure CN223942840U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wireless communication technology, and more specifically, to a signal monitoring system. Background Technology
[0002] With the development of wireless communication technology, people can meet various network needs within buildings. In order to achieve comprehensive network coverage, the application of passive signal monitoring systems plays a very important role.
[0003] To ensure the normal operation of a passive signal monitoring system, relevant technologies typically require the configuration of monitoring equipment to monitor the corresponding signal frequency band.
[0004] However, most existing monitoring equipment performs one-to-one signal monitoring. No single monitoring device can monitor frequencies and bands other than the target frequency, resulting in low monitoring accuracy and signal quality. Furthermore, each device needs to be deployed separately, which leads to high deployment costs. Utility Model Content
[0005] This utility model embodiment provides at least one signal monitoring system to achieve full-band signal monitoring, greatly improving monitoring accuracy and reducing deployment costs.
[0006] This utility model provides a signal monitoring system, including: an Internet of Things (IoT) communication module, and one or more slave devices. The IoT communication module includes a first wireless microcontroller (MCU), and the slave devices include a second wireless microcontroller (MCU). The slave devices communicate with the IoT communication module through a wireless connection between their own second wireless MCU and the first wireless MCU.
[0007] The slave device includes at least: a baseband signal processor capable of processing baseband signals, and a device capable of mixing the radio frequency signals received by the frequency shifter and transmitting the resulting mixed signal to the baseband signal processor.
[0008] The slave device is configured to receive signal monitoring commands from the IoT communication module, determine the signal monitoring results within the frequency band indicated by the signal monitoring commands based on the radio frequency signals sent by the user equipment or base station signal source, and transmit the signal monitoring results to the IoT communication module.
[0009] The IoT communication module is configured to report monitoring results to the cloud server.
[0010] In one possible implementation, the IoT communication module further includes a first power management chip (PMU), which is connected to the first wireless MCU.
[0011] The first PMU is used to put the first wireless MCU into a power-on startup state;
[0012] The first wireless MCU is used to receive signal monitoring results sent by at least one of the slave devices when it is powered on.
[0013] In one possible implementation, the IoT communication module further includes a network communication module, which is connected to the first PMU and the first wireless MCU respectively.
[0014] The first PMU is also used to put the network communication module into a power-on startup state;
[0015] The first wireless MCU is further configured to transmit at least one of the received signal monitoring results to the network communication module;
[0016] The network communication module is used to upload at least one of the acquired signal monitoring results to a cloud server when powered on.
[0017] In one possible implementation, the slave device further includes: a receiving antenna, a second power management chip (PMU), and a frequency shifter, wherein the frequency shifter, the baseband signal processor, and the second wireless MCU are connected in sequence.
[0018] The frequency shifter is specifically configured to determine the signal power received by the receiving antenna from the user equipment and / or base station signal source, mix the received radio frequency signal, and transmit the obtained mixed signal to the baseband signal processor.
[0019] The baseband signal processor is specifically configured to determine the signal monitoring result based on the mixing signal when the second PMU is in the power-on state, and transmit the signal monitoring result to the second wireless MCU.
[0020] The second wireless MCU is specifically configured to transmit the signal monitoring results generated by the baseband signal processor to the IoT communication module.
[0021] In one possible implementation, the baseband signal processor includes: a data-driven baseband processor and a main control module built on the RISC-V open-source architecture with a reduced instruction set architecture;
[0022] The data-driven baseband processor is used to process baseband signals and supports time division duplex (TDD) synchronization, and provides an antenna address interface; in response to the signal monitoring command issued by the IoT communication module, it receives radio frequency signals sent by user equipment or base station signal sources, and transmits the radio frequency signals to the main control module;
[0023] The main control module is used to control the start and stop of the baseband signal processor and to obtain the signal monitoring results within the frequency band indicated by the signal monitoring command.
[0024] In one possible implementation, the radio frequency signal band includes one or more of the following: 2G, 3G, 4G, 5G, and 6G.
[0025] In one possible implementation, the baseband signal processor further includes an expandable interface and an auxiliary function module. The expandable interface is disposed on a bus and transmits signals with both the data-driven baseband processor and the main control module.
[0026] The auxiliary function module transmits signals to the main control module through the peripheral bus to support the control logic of the main control module.
[0027] In one possible implementation, the auxiliary function module includes one or more of the following components:
[0028] A debug controller used for port debugging;
[0029] A clock manager used to synchronize the system clock with the internal clock;
[0030] General purpose input / output port controller for input / output interactive control;
[0031] An asynchronous serial interface controller used for receiving system commands and transmitting data;
[0032] Controller used for controlling external Flash storage;
[0033] Controller used to enable low-power saving mode;
[0034] A watchdog timer used to implement timing functions.
[0035] In one possible implementation, the plurality of slave devices are located on nodes of a three-tier, multi-level distributed network and configured to determine whether a corresponding node has malfunctioned based on signal monitoring results.
[0036] In one possible implementation, the multi-level distributed network comprises: a base station information source and distributed network devices at each level.
[0037] The aforementioned signal monitoring system includes slave devices configured to receive signal monitoring commands from the IoT communication module. These slave devices perform frequency mixing based on radio frequency signals transmitted from user equipment or base station sources, targeting a specific frequency band, to determine the signal monitoring results within the frequency band indicated by the command. The signal monitoring results are then transmitted to the IoT communication module, which is configured to report the monitoring results to a cloud server. This invention achieves full-band signal monitoring through a one-to-many master-slave system architecture, significantly improving monitoring accuracy and reducing deployment costs.
[0038] Other advantages of this invention will be explained in more detail below in conjunction with the accompanying drawings.
[0039] It should be understood that the above description is merely an overview of the technical solution of this utility model, so as to provide a general understanding of the technical means of this utility model and to implement it in accordance with the contents of the specification. In order to make the above and other objects, features and advantages of this utility model more apparent and understandable, specific embodiments of this utility model are illustrated below. Attached Figure Description
[0040] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly described below. The accompanying drawings are incorporated in and constitute a part of this specification. These drawings illustrate embodiments conforming to this utility model and, together with the specification, serve to explain the technical solutions of this utility model. It should be understood that the drawings only show some embodiments of this utility model and therefore should not be considered as a limitation on the scope of protection. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:
[0041] Figure 1 This diagram shows a module schematic of a signal monitoring system provided in an embodiment of the present invention;
[0042] Figure 2 This diagram illustrates a system framework of a signal monitoring system provided in an embodiment of the present invention.
[0043] Figure 3 This diagram shows a schematic of the baseband signal processor module in the signal monitoring system provided by an embodiment of the present invention;
[0044] Figure 4 This diagram shows a pinout of the baseband signal processor in the signal monitoring system provided in this embodiment of the present invention.
[0045] Figure 5This diagram illustrates an application of a signal monitoring system provided by an embodiment of the present invention.
[0046] Illustration:
[0047] 10-IoT communication module; 20-Slave device; 11-First wireless microcontroller; 12-First power management chip; 13-Network communication module; 21-Second wireless microcontroller; 22-Baseband signal processor; 23-Receiving antenna; 24-Second power management chip; 25-Frequency shifter; 221-Data-driven baseband processor; 222-Main control module; 223-Storage module; 224-Expandable interface; 225-Direct memory access module; 226-Auxiliary function module; 227-Mixer chip. Detailed Implementation
[0048] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.
[0049] In the description of the embodiments of this utility model, it should be understood that terms such as "comprising" or "having" are intended to indicate the presence of the disclosed features, figures, steps, behaviors, components, portions or combinations thereof in this specification, and do not exclude the possibility of the presence of one or more other features, figures, steps, behaviors, components, portions or combinations thereof.
[0050] Unless otherwise stated, " / " means "or". For example, A / B can mean A or B. In this article, "and / or" is merely a way of describing the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A alone, A and B at the same time, and B alone.
[0051] The terms "first," "second," etc., are used only for ease of description to distinguish identical or similar technical features and should not be construed as indicating or implying the relative importance or number of these technical features. Therefore, a feature defined by "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, unless otherwise stated, the term "multiple" means two or more.
[0052] Research has found that most existing monitoring devices perform one-to-one signal monitoring. No single monitoring device can monitor frequencies and bands other than the target frequency, resulting in low monitoring accuracy and signal quality. Furthermore, each device needs to be deployed separately, which leads to high deployment costs.
[0053] In order to at least partially solve one or more of the above-mentioned problems and other potential problems, this utility model provides a signal monitoring system to achieve full-band signal monitoring, greatly improve monitoring accuracy, and reduce deployment costs.
[0054] To clearly illustrate the embodiments of this utility model, some concepts that may appear in subsequent embodiments will be introduced first.
[0055] Digital Front End (DF): The data exchange interface between the DF and the Radio Frequency Transceiver (TRX) chip, enabling digital in-phase / quadrature (I / Q) data transmission and reception.
[0056] L1 shared memory is a shared memory that can be read and written by the main control core of a Reduced Instruction Set Computing Verilog (RISC-V) open-source architecture, as well as by Direct Memory Access (DMA).
[0057] Reduced Instruction Set Computing (RISC-V) Open Source Architecture: A RISC-V-based Central Processing Unit (CPU).
[0058] Instruction / Data Cache (I / D Cache): A fast instruction cache and a fast data cache for RISC-V, improving the processing efficiency of RISC-V.
[0059] BOOTROM: is a read-only memory (ROM) that stores the boot code.
[0060] AXI4 Interconnect: AXI4 is an Advanced Extensible Interface that is widely used in various processor architectures and application scenarios. It has advantages such as high performance, high bandwidth, scalability, flow control, flexibility and standardization, and is suitable for high-speed data transmission between various components in complex System on Chip (SOC).
[0061] Advanced Peripheral Bus (APB): A type of peripheral bus.
[0062] Direct Memory Access (DMA): Directly accesses memory.
[0063] Data-driven baseband processor: a multi-core computing cluster based on a RISC-V core that performs baseband demodulation functions.
[0064] Debug Controller: Performs debugging control on the chip ports.
[0065] Chip Clock Manager: Implements system clock synchronization and internal clock generation and distribution.
[0066] General Purpose Input / Output Port Controller (GPIO Controller): Used for interaction and control with the TRX chip.
[0067] Asynchronous Serial Interface Controller (UART Controller): Receives system commands and transmits data.
[0068] Flash Controller: Controls the external flash memory.
[0069] Low Power Controller: Controls low-power saving modes.
[0070] Watch Dog Timer (WDT): Implements a timer function.
[0071] QoS (Quality of Service) refers to the technology that enables a network to utilize various underlying technologies to provide better service capabilities for specified network communications, thereby solving problems such as network latency and congestion.
[0072] The signal monitoring system provided in this embodiment of the utility model mainly includes an Internet of Things (IoT) communication module, and one or more slave devices, such as... Figure 1 The example shown is a framework diagram of a signal monitoring system constructed by an IoT communication module 10 and two slave devices 20. Of course, this utility model is also compatible with the case of a signal monitoring system constructed by an IoT communication module 10 and a slave device 20.
[0073] The IoT communication module 10 includes a first wireless microcontroller 11, and the slave device 20 includes a second wireless microcontroller 21. The slave device 20 communicates with the IoT communication module 10 through the wireless connection between its own second wireless microcontroller 21 and the first wireless microcontroller 11.
[0074] The slave device 20 includes at least: a baseband signal processor 22 capable of processing baseband signals, and a device capable of mixing the radio frequency signals received by the frequency shifter and transmitting the resulting mixed signal to the baseband signal processor 22.
[0075] The slave device 20 is configured to receive signal monitoring commands from the IoT communication module 10, and based on the radio frequency signals sent by the user equipment or base station signal source, determine the signal monitoring results within the frequency band indicated by the signal monitoring command; and transmit the signal monitoring results to the IoT communication module 10.
[0076] The IoT communication module 10 is configured to report monitoring results to the cloud server.
[0077] To facilitate understanding of the signal monitoring system provided in this embodiment, the application scenario of the signal monitoring system will be briefly introduced first. Considering that most of the monitoring equipment currently used for signal quality monitoring in signal monitoring systems performs one-to-one signal monitoring, and that no single monitoring device can monitor frequencies and bands other than the target frequency, the monitoring accuracy and signal quality are both low, and each device needs to be deployed separately, resulting in high deployment costs.
[0078] Based on this, the present invention provides a one-to-many master-slave system architecture, which realizes full-band signal monitoring, greatly improves monitoring accuracy and signal quality, and requires only simple deployment with higher integration.
[0079] The IoT communication module 10 here serves as a communication module between at least one slave device 20 and the cloud server to issue signal monitoring commands to coordinate one or more of the slave devices 20 to perform signal monitoring. In other words, the IoT communication module 10 here can serve as a master device.
[0080] The slave device 20 includes at least a baseband signal processor 22 capable of processing baseband signals, and a device capable of mixing the radio frequency signals received by the frequency shifter and transmitting the resulting mixed signal to the baseband signal processor 22. Thus, when any slave device 20 receives a signal monitoring command from the IoT communication module 10, it can determine the signal monitoring result within the frequency band indicated by the signal monitoring command based on the radio frequency signals sent by the user equipment or base station signal source and send it to the IoT communication module 10. The IoT communication module 10 can then report the monitoring result to the cloud server for further signal analysis.
[0081] The baseband signal processor 22 in this embodiment of the present invention can be a high-performance, especially highly integrated 4G / 5G, or even 6G baseband demodulation SOC (system on chips) based on the Reduced Instruction Set Computing Verilog (RISC-V) architecture. It integrates a microcontroller unit (MCU), a baseband processor, and on-chip static random access memory (SRAM), and supports a flexible, upgradeable, and reconfigurable software architecture.
[0082] The chip register read / write control can utilize a standard four-wire Serial Peripheral Interface (SPI). It is packaged in a 10mm × 10mm, 100-pin Quad Flat No-leads Package (QFN). This allows for wide application in 4G and 5G indoor signal monitoring, time-division duplex (TDD) synchronization in repeaters, and 5G private networks such as satellite IoT applications, making it highly versatile.
[0083] The IoT communication module 10 here includes a first wireless microcontroller unit (MCU) 11, and the slave device 20 includes a second wireless microcontroller 21. The slave device 20 communicates with the IoT communication module 10 through the wireless connection between its own second wireless microcontroller 21 and the first wireless microcontroller 11.
[0084] like Figure 2 In the system architecture diagram shown, the IoT communication module 10 includes a first wireless microcontroller 11 and a first power management unit (PMU) 12, which is connected to the first wireless microcontroller 11; wherein:
[0085] The first power management chip 12 is used to put the first wireless microcontroller 11 into a power-on startup state;
[0086] The first wireless microcontroller 11 is used to receive signal monitoring results sent by at least one slave device 20 when powered on.
[0087] In addition, the IoT communication module 10 here also includes a network communication module 13, which is connected to the first power management chip 12 and the first wireless microcontroller 11 respectively; wherein:
[0088] The first power management chip 12 is also used to put the network communication module 13 into the power-on startup state;
[0089] The first wireless microcontroller 11 is also used to transmit the received signal monitoring result to the network communication module 13;
[0090] The network communication module 13 is used to upload at least one signal monitoring result to the cloud server when powered on.
[0091] Thus, through the communication connection between the first wireless microcontroller 11 and the second wireless microcontroller 21, the uplink monitoring command of the IoT communication module 10 is sent, and the monitoring results of the slave devices 20 are uploaded. At the same time, through the cooperation of the various slave devices 20, this embodiment of the utility model can achieve full-band signal monitoring, and the monitoring accuracy and signal quality are greatly improved.
[0092] Considering the crucial role of slave device 20 in signal monitoring, the specific structure of slave device 20 will be described in detail below. For example... Figure 2 In the system architecture shown, the slave device 20 includes a baseband signal processor 22, a receiving antenna 23, a second power management chip 24, and a frequency shifter 25. The frequency shifter 25, the baseband signal processor 22, and the second wireless microcontroller 21 are connected in sequence.
[0093] The frequency shifter 25 is specifically configured to determine the signal power received by the receiving antenna 23 from the user equipment and / or base station signal source, and to mix the received radio frequency signal, and transmit the obtained mixed signal to the baseband signal processor 22. In some embodiments, the frequency shifter 25 mixes the received radio frequency signal in the following manner: determining the target frequency band and the target local oscillator signal used to shift the radio frequency signal to be tested to the target frequency band, mixing the target local oscillator signal and the radio frequency signal to be tested, and outputting the frequency shift signal for monitoring. However, this is only one example of various implementation methods and is not limited to this.
[0094] The baseband signal processor 22 is specifically configured to determine the signal monitoring result based on the mixing signal when the second PMU is in the power-on state, and transmit the signal monitoring result to the second wireless MCU.
[0095] The second wireless MCU is specifically configured to transmit the signal monitoring results generated by the baseband signal processor 22 to the IoT communication module 10.
[0096] As disclosed above, the baseband signal processor 22 can perform signal monitoring for the signal monitoring system through the shutdown control of the second power management chip 24, and determine the signal monitoring results in the full frequency band range.
[0097] In some embodiments, the receiving antenna 23 can receive downlink signals from 4G and 5G base stations, thereby enabling effective monitoring, automatic inspection, fault location, and intelligent analysis of traditional 4G and 5G indoor distributed antenna networks through signal analysis by the baseband signal processor 22, thus filling the market gap for low-cost 4G / 5G dual-mode baseband solutions. It can also receive uplink signals from user equipment (UE), which can solve problems such as abnormal Quality of Service (QoS) and user complaints in indoor distributed networks, monitor signal changes of mobile phone users under different antennas in the indoor environment, and achieve accurate positioning, i.e., antenna Internet Protocol Address (IP) function, to help operators quickly and effectively locate and resolve QoS problems in indoor distributed networks.
[0098] like Figure 3 As shown, the baseband signal processor 22 in this embodiment of the present invention mainly includes a data-driven baseband processor 221 and a main control module 222 built on the RISC-V open-source architecture; wherein:
[0099] The data-driven baseband processor 221 is used to process baseband signals and supports time division duplex (TDD) synchronization, and provides an antenna address interface; in response to the signal monitoring command issued by the IoT communication module 10, it receives radio frequency signals sent by user equipment or base station signal sources and transmits the radio frequency signals to the main control module 222.
[0100] The main control module 222 is used to control the start and stop of the baseband signal processor 22 and to obtain the signal monitoring results within the frequency band indicated by the signal monitoring command.
[0101] This invention employs a data-driven baseband processor 221 and a main control module 222 built with RISC-V, which offers better integration and stronger computing power, enabling full-band coverage, including various frequency bands involved in 2G, 3G, 4G, 5G, and 6G. Especially effective is the synchronization and monitoring of 4G-5G and even 6G signals. In other words, compared to existing technologies that achieve one-to-one monitoring without integration, where any single monitoring device cannot monitor frequencies and bands outside its designated frequency point, resulting in low accuracy, this invention enables one-to-many monitoring, offering higher integration and wider applicability.
[0102] The baseband signal processor 22 provided in this embodiment can be applied to the base station signal source connected to the signal monitoring system to monitor the signal strength of the base station signal source. It can also be applied to the user equipment connected to the signal monitoring system to monitor the signal strength of the user equipment. The following will be explained in detail from the following two aspects.
[0103] Firstly, when the radio frequency transceiver is applied to the base station signal source connected to the signal monitoring system, the data-driven baseband processor 221 is specifically used to: detect the base station synchronization signal in the environment where the signal monitoring system is located, and perform baseband demodulation on the first radio frequency signal sent by the base station signal source, outputting the first baseband demodulated signal while simultaneously outputting the synchronization signal and the time slot indication signal; wherein, the first baseband demodulated signal is used for signal analysis for the signal monitoring system, and the synchronization signal is used to realize the synchronization between the signal monitoring system and the base station signal source.
[0104] In practical applications, the baseband signal processor 22 provided in this embodiment of the present invention can perform baseband demodulation on downlink signals of 4G and 5G base stations, accurately detect the signal strength transmitted by indoor distributed antennas, and realize effective monitoring, automatic inspection, fault location and intelligent analysis of traditional 5G indoor distributed antenna networks.
[0105] Secondly, when the radio frequency transceiver is applied to user equipment connected to the signal monitoring system, the data-driven baseband processor 221 is specifically used to: perform baseband demodulation on the second radio frequency signal sent by the user equipment in the environment of the signal monitoring system, and output the second baseband demodulated signal for signal analysis of the signal monitoring system.
[0106] In practical applications, the baseband signal processor 22 provided in this embodiment of the present invention also supports baseband parsing of user equipment (UE) uplink signals, which can identify problems such as QoS anomalies and user complaints in indoor distributed networks.
[0107] Furthermore, this utility model embodiment can also be configured with multiple antennas. By measuring the signal power obtained by the user equipment under each antenna (here, the signals obtained under each antenna are mixed signals), the signal changes of the mobile phone user under different antennas in the indoor distributed antenna system can be determined, thereby achieving accurate positioning. This is the antenna IP-based function, which helps operators quickly and effectively locate and solve QoS problems in indoor distributed antenna systems.
[0108] In practical applications, the baseband signal processor 22 provided in this embodiment of the present invention can be used as an integrated chip, which can also integrate various functions to adapt to more complex application scenarios.
[0109] like Figure 3 As shown, the baseband signal processor 22 provided in this embodiment of the present invention includes, in addition to the RISC-V data-driven baseband processor 221 and the main control module 222, a storage module 223. The storage module 223 includes at least shared memory for joint access by the main control module 222 and other control modules, for example, such as... Figure 4 The L1 shared memory shown can be read and written by the RISC-V master core or by DMA.
[0110] like Figure 4 As shown, the storage module 223 in this embodiment of the present invention further includes an instruction-data cache (I / DCache) and a read-only memory (BOOTROM) for storing boot code. The former is used for fast instruction caching and fast data caching to improve the processing efficiency of RISC-V, and the latter is used to place the boot code.
[0111] Depend on Figure 3 As can be seen, the baseband signal processor 22 provided in this embodiment of the present invention also includes an expandable interface 224 and a direct memory access module 225 that directly transmits signals with the expandable interface 224, so as to adapt to the data transmission needs of various complex scenarios.
[0112] like Figure 3As shown, the scalable interface 224 here can be AXI4 Interconnect. As an advanced scalable interface 224, AXI4 is widely used in various processor architectures and application scenarios, and has advantages such as high performance, high bandwidth, scalability, flow control, flexibility, and standardization. It is suitable for the high-speed data transmission needs between various components in complex SoCs. In this embodiment of the present invention, it can transmit signals with the data-driven baseband processor 221. In addition, it can also be connected to Direct Memory Access (DMA) to realize direct data transmission between peripheral devices and storage module 223.
[0113] like Figure 3 As can be seen, the expandable interface 224 in the baseband signal processor 22 provided in this embodiment of the present invention is located on the bus, and the expandable interface 224 transmits signals with both the data-driven baseband processor 221 and the main control module 222. In addition, the auxiliary function module 226 transmits signals with the main control module 222 through the peripheral bus to support the control logic of the main control module 222.
[0114] The peripheral bus here could be, for example, Figure 4 The APB shown can also be other peripheral buses; the auxiliary function module 226 here can be one or more of the following components:
[0115] A debug controller for port debugging (e.g.) Figure 4 (See Debug Controller);
[0116] A clock manager used to synchronize the system clock with the internal clock (such as...) Figure 4 (as shown in ClockManagement);
[0117] General purpose input / output port controllers for input / output interactive control (such as...) Figure 4 (as shown in the GPIOController);
[0118] An asynchronous serial interface controller used for receiving system commands and transmitting data (such as...) Figure 4 (UART Controller shown);
[0119] Controller for external Flash storage control (e.g.) Figure 4 (as shown in the Flash Controller);
[0120] Controller used to enable low-power saving mode (e.g.) Figure 4 (As shown, Low Power Controller);
[0121] A watchdog timer used to implement timing functions (such as...) Figure 4 (WDT shown).
[0122] It should be noted that in practical applications, any one or any combination of the above components can be selected based on actual application needs, and no specific restrictions are imposed here. In addition, other auxiliary function components can be set up to support application needs in more complex scenarios.
[0123] In addition, the baseband signal processor 22 provided here, such as Figure 3 As shown, the mixer chip 227 can also be integrated in different integration forms. The mixer chip 227 determines the signal power transmitted by the user equipment and / or antenna, and mixes the signal of the frequency band to be monitored.
[0124] In practical application scenarios, the multiple slave devices 20 in this embodiment of the present invention can be set on nodes of a multi-level distributed network and configured to determine whether the corresponding node has malfunctioned through signal monitoring results.
[0125] The multi-level distributed network consists of base station signal sources and distributed network equipment at various levels.
[0126] like Figure 5 The diagram shows the application of the signal monitoring system provided in this embodiment of the present invention on a node of a three-level distributed network. ANT1 to ANT9 correspond to the receiving antennas 23 of the nine slave devices 20, and DET1 to DET9 are the signal monitoring of the corresponding nodes by the nine slave devices 20.
[0127] If one of the receiving antennas 23ANT1 corresponds to a slave device 20DET1 that reports a signal loss, then it can be confirmed that the corresponding receiving antenna 23ANT1 has failed. Similarly, if slave devices 20DET1 / DET2 / DET3 report a signal loss at the same time, but not all of the other DET4 to DET9 report a signal loss, then it can be determined that node A has a problem, and the node with the problem can be quickly located.
[0128] The logic for determining whether it is node B or node C is the same. When DET1 to DET9 all report signal loss, it means that either node D has failed or the base station signal source has failed.
[0129] In practical applications, these nine slave devices 20 can be jointly deployed using only one IoT communication module 10. For example, in a building or a floor, only one IoT communication module 10 is needed to complete full-coverage, full-frequency signal monitoring. The deployment is simple and the cost is lower.
[0130] In summary:
[0131] The aforementioned signal monitoring system includes slave devices configured to receive signal monitoring commands from the IoT communication module. These slave devices perform frequency mixing based on radio frequency signals transmitted from user equipment or base station sources, targeting a specific frequency band, to determine the signal monitoring results within the frequency band indicated by the command. The signal monitoring results are then transmitted to the IoT communication module, which is configured to report the monitoring results to a cloud server. This invention achieves full-band signal monitoring through a one-to-many master-slave system architecture, significantly improving monitoring accuracy and reducing deployment costs.
[0132] In the description of this specification, references to terms such as "some possible implementations," "some implementations," "example," "specific example," or "some examples" indicate that a specific feature, structure, material, or characteristic described in connection with that implementation or example is included in at least one implementation or example of this utility model, and the aforementioned terms do not necessarily refer to the same implementation or example. Furthermore, the described specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more implementations or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different implementations or examples described in this specification, as well as the features of different implementations or examples.
[0133] While the spirit and principles of this utility model have been described above with reference to several specific embodiments, it should be understood that this utility model is not limited to the specific embodiments disclosed, and the division of aspects does not imply that features in these aspects cannot be combined. This utility model is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims
1. A signal monitoring system, characterized in that, include: The IoT communication module, and one or more slave devices, wherein the IoT communication module includes a first wireless microcontroller (MCU), the slave device includes a second wireless microcontroller (MCU), and the slave device communicates with the IoT communication module through a wireless connection between its own second wireless MCU and the first wireless MCU; The slave device includes at least: a baseband signal processor capable of processing baseband signals, and a device capable of mixing the radio frequency signals received by the frequency shifter and transmitting the resulting mixed signal to the baseband signal processor. The slave device is configured to receive signal monitoring commands from the IoT communication module, determine the signal monitoring results within the frequency band indicated by the signal monitoring commands based on the radio frequency signals sent by the user equipment or base station signal source, and transmit the signal monitoring results to the IoT communication module. The IoT communication module is configured to report monitoring results to the cloud server.
2. The signal monitoring system according to claim 1, characterized in that, The IoT communication module also includes a first power management chip (PMU), which is connected to the first wireless MCU. The first PMU is used to put the first wireless MCU into a power-on startup state; The first wireless MCU is used to receive signal monitoring results sent by at least one of the slave devices when it is powered on.
3. The signal monitoring system according to claim 2, characterized in that, The IoT communication module also includes a network communication module, which is connected to the first PMU and the first wireless MCU respectively. The first PMU is also used to put the network communication module into a power-on startup state; The first wireless MCU is further configured to transmit at least one of the received signal monitoring results to the network communication module; The network communication module is used to upload at least one of the acquired signal monitoring results to a cloud server when powered on.
4. The signal monitoring system according to any one of claims 1 to 3, characterized in that, The slave device further includes: a receiving antenna, a second power management chip (PMU), and a frequency shifter, wherein the frequency shifter, the baseband signal processor, and the second wireless MCU are connected in sequence. The frequency shifter is specifically configured to determine the signal power received by the receiving antenna from the user equipment and / or base station signal source, mix the received radio frequency signal, and transmit the obtained mixed signal to the baseband signal processor. The baseband signal processor is specifically configured to determine the signal monitoring result based on the mixing signal when the second PMU is in the power-on state, and transmit the signal monitoring result to the second wireless MCU. The second wireless MCU is specifically configured to transmit the signal monitoring results generated by the baseband signal processor to the IoT communication module.
5. The signal monitoring system according to claim 4, characterized in that, The baseband signal processor includes: a data-driven baseband processor and a main control module built on the RISC-V open-source architecture with a reduced instruction set architecture; The data-driven baseband processor is used to process baseband signals and supports time division duplex (TDD) synchronization, and provides an antenna address interface; in response to the signal monitoring command issued by the IoT communication module, it receives radio frequency signals sent by user equipment or base station signal sources, and transmits the radio frequency signals to the main control module; The main control module is used to control the start and stop of the baseband signal processor and to obtain the signal monitoring results within the frequency band indicated by the signal monitoring command.
6. The signal monitoring system according to claim 5, characterized in that, The radio frequency signal bands include one or more of the following: 2G, 3G, 4G, 5G and 6G.
7. The signal monitoring system according to claim 5, characterized in that, The baseband signal processor also includes an expandable interface and an auxiliary function module. The expandable interface is set on the peripheral bus and transmits signals with both the data-driven baseband processor and the main control module. The auxiliary function module transmits signals to the main control module through the peripheral bus to support the control logic of the main control module.
8. The signal monitoring system according to claim 7, characterized in that, The auxiliary function module includes one or more of the following components: A debug controller used for port debugging; A clock manager used to synchronize the system clock with the internal clock; General purpose input / output port controller for input / output interactive control; An asynchronous serial interface controller used for receiving system commands and transmitting data; Controller used for controlling external Flash storage; Controller used to enable low-power saving mode; A watchdog timer used to implement timing functions.
9. The signal monitoring system according to any one of claims 1 to 3, characterized in that, The multiple slave devices are set on nodes of a multi-level distributed network and configured to determine whether the corresponding node has malfunctioned based on signal monitoring results.
10. The signal monitoring system according to claim 9, characterized in that, The multi-level distributed network consists of base station signal sources and distributed network equipment at each level.