Signal monitoring system

Abstract

The invention discloses a signal monitoring system. Relates to the field of mobile communication, and comprises a power supply end for supplying power to a signal monitor through a wired power supply link; the signal monitor is connected with the power supply end through a wired power supply link and is used for receiving the radio frequency signals of multiple communication systems and multiple frequency bands sent by the antenna, processing the radio frequency signals in a time division multiplexing mode, generating a signal judgment result for the radio frequency signals and sending the signal judgment result to a communication network; and the communication network is wirelessly connected with the signal monitor and is used for receiving the signal judgment result sent by the signal monitor and sending the signal judgment result to a back-end management system. According to the method and the device, the problem of relatively high signal monitoring cost caused by adopting multiple radio frequency links for signal monitoring in the prior art is solved.

Description

Technical Field

[0001] This application relates to the field of mobile communications, and in particular, to a signal monitoring system. Background Art

[0002] The 4G (Fourth Generation Mobile Communication Technology) / 5G (Fifth Generation Mobile Communication Technology) indoor distribution system in the related art uses a passive DAS system (Passive Distributed Antenna System). Since the passive DAS system cannot be directly monitored, in-building distribution faults cannot be detected in time, and maintenance is triggered passively, which is not conducive to the user experience. The in-building distribution system has a complex structure, numerous components distributed in different areas, and fault invisibility, lacking effective fault detection and location tools; there are many constraints for rectifying and optimizing the passive DAS system, such as on-site inspections cannot cover all areas, and the efficiency is low, the workload is large, and the rectification effect is not lasting.

[0003] A new in-building distribution antenna monitoring system has also been proposed in the related art. It shifts the 5G signal to the 2.4 GHz band, obtains the judgment result through power detection, and finally sends the judgment result to the in-building distribution antenna monitoring platform through the 4G network. However, this in-building distribution antenna monitoring system adopts the design idea of superimposing 4G or 5G modules. Different modules of different systems independently detect and report the performance of signals of corresponding systems. Each module is configured with a separate radio frequency circuit. For each additional system, an independent module needs to be superimposed, and the cost increases linearly.

[0004] In view of the problem in the related art that the signal monitoring cost is relatively high due to using multiple radio frequency links for signal monitoring, no effective solution has been proposed yet. Summary of the Invention

[0005] The main purpose of this application is to provide a signal monitoring system to solve the problem in the related art that the signal monitoring cost is relatively high due to using multiple radio frequency links for signal monitoring.

[0006] To achieve the above purpose, according to one aspect of this application, a signal monitoring system is provided. The system includes: a power supply end that provides power to the signal monitor through a wired power supply link; a signal monitor that is connected to the power supply end through a wired power supply link, is used to receive radio frequency signals of multiple communication systems and multiple frequency bands emitted by the antenna, processes the radio frequency signals through time-division multiplexing, generates a signal judgment result for the radio frequency signals, and sends the signal judgment result to a communication network; a communication network that is wirelessly connected to the signal monitor, is used to receive the signal judgment result sent by the signal monitor, and send the signal judgment result to a backend management system.

[0007] Optionally, the signal monitor includes: a signal receiver, configured to receive radio frequency signals of multiple communication systems and multiple frequency bands emitted by an antenna, and filter the radio frequency signals to obtain filtered radio frequency signals; a reusable radio frequency circuit, connected to the signal receiver, configured to detect the filtered radio frequency signals by time-division multiplexing the radio frequency link in different time periods to obtain target radio frequency signals; a signal detection chip, connected to the reusable radio frequency circuit, configured to perform signal processing on the target radio frequency signals to obtain baseband signal characteristics, where the signal processing includes at least one of the following: radio frequency down-conversion, analog conversion, digital down-conversion, and baseband demodulation processing; and a control unit, connected to the signal receiver, the reusable radio frequency circuit, and the signal detection chip, configured to generate a signal decision result based on the baseband signal characteristics and send the signal decision result to a communication network.

[0008] Optionally, the signal monitor further includes: a signal feedback unit, connected to the control unit and the signal detection chip, configured to feedback the signal decision result to the communication network.

[0009] Optionally, the signal monitor further includes: a power supply conversion unit, configured to convert the power supply provided by a power supply terminal into the operating power supplies of the signal receiver, the reusable radio frequency circuit, the signal detection chip, the control unit, and the signal feedback unit.

[0010] Optionally, the control unit is configured to receive a signal selection instruction, where the signal selection instruction is used to indicate selecting radio frequency signals of a target operator, a target communication system, a target frequency band, and a target bandwidth as monitoring objects.

[0011] Optionally, when the monitored radio frequency signals include radio frequency signals of a first communication system and a second communication system, determine the processing order of the radio frequency signals of the first communication system and the second communication system based on the feedback network of the signal feedback unit, where the feedback network is the network corresponding to the first communication system or the network corresponding to the second communication system.

[0012] Optionally, when the baseband signal characteristics include the received signal strength, the control unit determines the signal decision result by comparing the received signal strength with a preset signal strength threshold.

[0013] Optionally, when the baseband signal characteristics include the signal reception power, the control unit determines the signal decision result by comparing the signal reception power with a preset signal reception power threshold.

[0014] Optionally, when the baseband signal characteristics include the signal reception quality, the control unit determines the signal decision result by comparing the signal reception quality with a preset signal reception quality threshold.

[0015] Optionally, when the baseband signal feature includes a physical cell identifier, the control unit determines the signal decision result based on the switching result of the physical cell identifier.

[0016] With this application, the following system is adopted: a power supply end that provides power to the signal monitor through a wired power supply link; a signal monitor that is connected to the power supply end through a wired power supply link, is used to receive radio frequency signals of multiple communication systems and multiple frequency bands emitted by an antenna, processes the radio frequency signals through time-division multiplexing, generates a signal decision result for the radio frequency signals, and sends the signal decision result to a communication network; a communication network that is wirelessly connected to the signal monitor, is used to receive the signal decision result sent by the signal monitor, and send the signal decision result to a back-end management system, thus solving the problem in the related art that due to using multiple radio frequency links for signal monitoring, the signal monitoring cost is relatively high. The signal monitor detects radio frequency signals of different systems and different frequency bands through time-division multiplexing, multiplexes the radio frequency circuit and the signal detection chip, and thus achieves the effect of reducing the signal monitoring cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of this application are used to provide a further understanding of this application. The schematic embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation to this application. In the drawings:

[0018] Figure 1 is a schematic structural diagram of a signal monitoring system provided according to an embodiment of this application;

[0019] Figure 2 is a schematic structural diagram of a signal monitor provided according to an embodiment of this application;

[0020] Figure 3 is a schematic diagram of the processing flow of a signal monitor provided according to an embodiment of this application;

[0021] Figure 4 is a flowchart of a signal processing method provided according to an embodiment of this application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments may be combined with each other. The following will refer to the drawings and describe this application in detail with reference to the embodiments.

[0023] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0024] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0025] The present invention is described below in conjunction with preferred implementation steps. Figure 1 is a schematic diagram of the structure of a signal monitoring system provided according to an embodiment of the present application, such as Figure 1 As shown, the system includes:

[0026] A power supply end, providing power to the signal monitor via a wired power supply link;

[0027] In some examples, the power supply end can remotely power the monitor through a wired remote power supply method using AC power transmission, thereby providing the monitor with power for long-term operation; the power supply end is connected to the signal monitor, and through a remote wired method, it provides the signal monitor with power for long-term operation. The use of a wired transmission power supply method solves the problem of short battery life of the signal monitor in related technologies.

[0028] The signal monitor is connected to the power supply end through a wired power supply link. It is used to receive radio frequency signals of various communication standards and various frequency bands emitted by the antenna, process the radio frequency signals through time division multiplexing, generate signal judgment results for the radio frequency signals, and send the signal judgment results to the communication network.

[0029] In some examples, the signal monitor introduces a time-division multiplexing processing method and adopts a "chip-based" processing idea for "multi-standard, multi-band" signal detection. The signal monitor receives radio frequency signals of multiple communication standards and multiple frequency bands emitted by the antenna, performs signal processing and signal detection in a time-division manner, and transmits the signal judgment results back to the back-end management system based on the communication network.

[0030] A communication network, wirelessly connected to the signal monitor, is configured to receive the signal decision result sent by the signal monitor and send the signal decision result to the back-end management system.

[0031] In some examples, the signal monitor is connected to the communication network, and the communication network can be a carrier 4G / NB-IoT (Narrowband Internet of Things) / 5G network. The signal decision result of the signal monitor is sent back to the back-end management system based on the carrier 4G / NB-IoT / 5G network. At the same time, some decision instructions of the back-end management system are also transmitted to the signal monitor through the carrier 4G / NB-IoT / 5G network.

[0032] In the signal monitoring system provided by the embodiments of the present application, a power supply end provides power to the signal monitor through a wired power supply link; the signal monitor is connected to the power supply end through the wired power supply link, and is configured to receive radio frequency signals of multiple communication systems and multiple frequency bands emitted by the antenna, process the radio frequency signals in a time-division multiplexing manner, generate a signal decision result for the radio frequency signals, and send the signal decision result to the communication network; the communication network is wirelessly connected to the signal monitor, and is configured to receive the signal decision result sent by the signal monitor and send the signal decision result to the back-end management system, which solves the problem in the related art that the signal monitoring cost is relatively high due to using multiple radio frequency links for signal monitoring. The signal monitor detects radio frequency signals of different systems and different frequency bands in a time-division multiplexing manner, and multiplexes the radio frequency circuit and the signal detection chip, thereby achieving the effect of reducing the signal monitoring cost.

[0033] To monitor radio frequency signals of multiple frequency bands, the radio frequency signals are processed by the signal monitor. Optionally, in the signal monitoring system provided by the embodiments of the present application, the signal monitor includes: a signal receiver, configured to receive radio frequency signals of multiple communication systems and multiple frequency bands emitted by the antenna, and filter the radio frequency signals to obtain filtered radio frequency signals; a reusable radio frequency circuit, connected to the signal receiver, configured to detect the filtered radio frequency signals by multiplexing the radio frequency link in different time periods in a time-division multiplexing manner to obtain target radio frequency signals; a signal detection chip, connected to the reusable radio frequency circuit, configured to perform signal processing on the target radio frequency signals to obtain baseband signal characteristics, where the signal processing includes at least one of the following: radio frequency down-conversion, analog conversion, digital down-conversion, and baseband demodulation processing; a control unit, connected to the signal receiver, the reusable radio frequency circuit, and the signal detection chip, configured to generate a signal decision result based on the baseband signal characteristics and send the signal decision result to the communication network.

[0034] In some examples, Figure 2 is a schematic structural diagram of the signal monitor provided by the embodiments of the present application, asFigure 2 As shown in the figure, the signal monitor consists of a signal receiver, a reusable RF circuit, a signal detection chip, a control unit, a signal feedback unit, and a power supply conversion unit. The signal receiver is used to receive the RF signals emitted by the antenna. The signal receiver can receive signals of multiple communication systems and multiple frequency bands, and perform appropriate signal processing, such as filtering signals outside the frequency band.

[0035] The reusable RF circuit supports the processing of RF signals of all communication systems and frequency bands, such as two systems of 4G and 5G, and all-band RF signals of 4G and 5G. Given that operators' 2G (second-generation mobile communication network) and 3G (third-generation mobile communication network) are re-farmed to 4G, for example, Operator A re-farms the 2G RF signal of 1.8 GHz to 4G LTE (Long Term Evolution, a high-speed wireless communication standard for mobile devices and data terminals), and some 4G frequency bands are re-farmed to 5G, such as Operator B re-farming the 4G of 2.1 GHz to 5G NR (5th Generation New Radio), which provides a prerequisite for the RF link reuse of the signal monitor. In addition, the 1800 MHz of Operator A, Operator B, and Operator C can be made into the same RF link; the 900 MHz of Operator A and Operator B can also be made into the same RF link. In this way, more RF links can be reused, reducing the system cost. The reusable RF circuit adopts the principle of time-sharing processing and processes them in sequence until all RF signals of all communication systems and all frequency bands are processed. Table 1 shows the RF signals of different communication systems and frequency bands of each operator.

[0036] Table 1

[0037]

[0038]

[0039]

[0040]

[0041] The signal detection chip can be a 4G / 5G signal detection SoC (System on Chip) chip. As a core signal processing chip, it also adopts a time-division multiplexing-based processing method and can be fully multiplexed. The 4G / 5G signal detection SoC chip performs radio frequency down-conversion, analog conversion, digital down-conversion, and baseband demodulation processing on the radio frequency signals from the signal receiver to obtain baseband signal characteristics such as SINR (Signal to Interference plus Noise Ratio), RSRP (Reference Signal Receiving Power), RSRQ (Reference Signal Receiving Quality), RSSI (Received Signal Strength Indication), the frequency point information of the signal, the frequency band information of the signal, PCI (Physical Cell Identifier), etc.

[0042] The control unit can be implemented by an MCU (Microcontroller Unit), a CPU (Central Processing Unit), or an ARM (Advanced RISC Machine). The control unit can handle the selection of the operator, the selection of the communication mode, the selection of the frequency band, and the selection of the bandwidth. At the same time, the logical judgment on whether the antenna signal is normal or abnormal is also determined by the control unit.

[0043] For example, Figure 3 is a schematic diagram of the processing flow of the signal monitor provided by the embodiment of the present application, as Figure 3As shown, the process includes: The core control unit receives instructions, which can be sent by the background network management system or pre-stored on the signal monitor, including the selection of operators (selecting a single operator, multiple operators, or all operators), the selection of communication systems (detecting signals only for a single communication system or multiple communication systems), the selection of frequency bands (detecting signals only for the selected frequency bands or all frequency bands), the selection of bandwidth, etc.; The core control unit processes them in sequence. First, it selects a communication system and sequentially detects signals for the selected operator and the selected frequency bands under this communication system, and records the detection results; for example, it first detects 5G NR signals; then it sequentially detects other communication systems and the selected frequency bands under this communication system, such as detecting 4G LTE signals and recording the detection results; The 4G / 5G signal detection Soc chip obtains the characteristics of the baseband signal: SINR, RSRP, RSRQ, RSSI, the frequency point information of the signal, the frequency band information of the signal, PCI (Physical Cell Identifier) physical cell identifier, etc. The core control unit makes a signal quality decision based on certain criteria, such as the RSSI decision method, the RSRP decision method, the PCI decision method, etc., and outputs the decision result to the signal transmission unit; The signal transmission unit transmits the detection results back to the background network management platform.

[0044] The signal monitor of this embodiment introduces a time-division multiplexing processing method and abandons the traditional "parallel signal processing" method. By serially processing 4G and 5G in a time-division manner and multiplexing the radio frequency circuit, the MCU control circuit, the storage module, and the 4G / 5G signal detection Soc chip, it multiplexes the existing circuits as much as possible and reduces the cost of the monitor. The signal monitor of this embodiment has good scalability. It can be combined with the application requirements of different scenarios and can be extended to support signal detection of multiple systems and multiple frequency bands such as 2G / 3G / 4G / 5G, with strong scalability and applicability to a variety of different application scenarios. The signal monitor can not only detect and analyze radio frequency signals of multiple systems and frequency bands, but also achieve low-cost and long-endurance operation through remote power supply and time-division multiplexing technology, providing strong support for the maintenance and optimization of in-building distribution systems.

[0045] After the signal monitor generates a signal decision result, it is necessary to transmit the signal decision result through the signal transmission unit. Optionally, in the signal monitoring system provided in the embodiments of the present application, the signal monitor further includes: a signal transmission unit, connected to the control unit and the signal detection chip, for transmitting the signal decision result back to the communication network.

[0046] In some examples, the signal backhaul unit is equipped with a SIM card (Subscriber Identity Module) of the corresponding operator, which can receive or transmit signals of the operator's 4G / NB-IoT / 5G network, and can realize the transceiver processing of wireless signals. The 4G or NB-IoT or 5G network is used for transmission, and the specific transmission network of the system is adaptively selected in combination with different application scenarios and the strength of the network signal in that scenario. For example, in an application scenario with a small amount of signal transmission and low power consumption requirements, the NB-IoT network can be preferentially selected.

[0047] Through the close cooperation with the control unit and the signal detection chip, the signal backhaul unit of this embodiment can efficiently and securely transmit the signal decision result to the communication network, thereby realizing the remote monitoring and maintenance of the signal state of the indoor distribution system, improving the overall performance of the signal monitoring system, enhancing its adaptability in complex environments and the compatibility of the communication network, and providing solid technical support for the intelligent management and maintenance of the in-building distribution system.

[0048] In order to make the signal monitor work stably, power conversion processing needs to be carried out through the power supply conversion unit. Optionally, in the signal monitoring system provided in the embodiments of the present application, the signal monitor further includes: a power supply conversion unit for converting the power supplied by the power supply end into the working power supplies of the signal receiver, the reusable radio frequency circuit, the signal detection chip, the control unit and the signal backhaul unit.

[0049] In some examples, the power supply conversion unit is used to convert and adjust the voltage and current of the power from the mains transmission circuit to adapt to the normal working power supply and current of the signal receiver, the reusable radio frequency circuit, the 4G / 5G signal detection Soc chip, the control unit, and the signal backhaul unit.

[0050] The power supply conversion unit of this embodiment ensures that the signal monitor can operate stably and efficiently under remote power supply conditions, meets the power requirements of the entire process from signal reception, processing to backhaul, and also provides hardware-level support for the low-cost and long-endurance characteristics of the monitor.

[0051] The type of radio frequency signal to be monitored is selected through a signal selection instruction. Optionally, in the signal monitoring system provided in the embodiments of the present application, the control unit is used to receive the signal selection instruction, where the signal selection instruction is used to indicate selecting a radio frequency signal with a target operator, a target communication system, a target frequency band and a target bandwidth as the monitoring object.

[0052] In some examples, the control unit receives a signal selection instruction, which can be issued by the background network management system or pre-stored on the signal monitor, including the selection of the target operator (selecting a single operator, multiple operators, or all operators), the selection of the target communication mode (detecting signals only for a single communication mode or for multiple communication modes), the selection of the target frequency band (detecting signals only for the selected frequency band or for all frequency bands), the selection of the target bandwidth, etc.

[0053] In this embodiment, the control unit ensures that the signal monitor can accurately perform the monitoring task on the target type of radio frequency signal. At the same time, through an efficient internal coordination and status monitoring mechanism, the stable operation and high reliability of the monitor are maintained. According to different application scenarios and requirements, the working mode of the signal monitor is dynamically adjusted to achieve accurate monitoring of radio frequency signals of specific operators, modes, frequency bands, and bandwidths, enhancing the practicability and flexibility of the signal monitor, which helps operators manage their in-building distribution networks more effectively, discover and solve problems in a timely manner, and thus improve the network service quality and user experience.

[0054] Optionally, in the signal monitoring system provided in the embodiment of the present application, when the monitored radio frequency signals include radio frequency signals of the first communication mode and the second communication mode, the processing order of the radio frequency signals of the first communication mode and the second communication mode is determined based on the backhaul network of the signal backhaul unit, where the backhaul network is the network corresponding to the first communication mode or the network corresponding to the second communication mode.

[0055] In some examples, the first communication mode can be 4G, and the second communication mode can be 5G. The control unit can process the radio frequency signals of different communication modes in sequence. First, select a communication mode, and then sequentially detect the signals of the selected operator and the selected frequency band under this communication mode, and record the detection results; for example, first detect the 5G NR signal; then sequentially detect the signals of other communication modes and the selected frequency band under this communication mode, such as detecting the 4G LTE signal and recording the detection results.

[0056] For example, for the 4G and 5G dual-mode signal detection, the control unit adopts the corresponding processing order according to the backhaul network of the signal backhaul unit. If the selected backhaul signal is 4G, the signal processing process is: first process the 5G radio frequency signal, and finally process the 4G radio frequency signal. After the signal detection is completed, the signal judgment result is then backhauled based on the 4G network; if the selected backhaul signal is 5G, the signal processing process is: first process the 4G signal, and finally process the 5G signal. After the signal detection is completed, the detection result is then backhauled based on the 5G network.

[0057] In this embodiment, through this mechanism of determining the processing order of RF signals based on the backhaul network, the signal monitor can efficiently switch between different communication systems and frequency bands, while ensuring that the signal decision result can be quickly and accurately transmitted back to the communication network, improving the adaptability and performance in complex network environments.

[0058] The signal decision result can be generated based on the received signal strength. Optionally, in the signal monitoring system provided in the embodiments of the present application, when the baseband signal characteristics include the received signal strength, the control unit determines the signal decision result by comparing the received signal strength with a preset signal strength threshold.

[0059] In some examples, the baseband signal characteristics obtained by the signal detection chip may include: SINR, RSRP, RSRQ, RSSI, signal frequency information, signal band information, PCI (Physical Cell Identifier) physical cell identifier, etc. The control unit makes a signal quality decision based on preset criteria, such as RSSI decision method, RSRP decision method, PCI decision method, etc., and outputs the decision result to the signal backhaul unit.

[0060] After the signal detection chip completes processing such as down-conversion, analog-to-digital conversion, and baseband demodulation of the RF signal, it will output various characteristic parameters of the baseband signal, including the RSSI value. The RSSI value reflects the received signal strength. The control unit stores preset signal strength thresholds for different communication systems and frequency bands internally. These thresholds can be comprehensively determined based on factors such as historical data, network planning, and signal propagation models, aiming to distinguish the quality of the signal. The control unit reads the RSSI value output by the signal detection chip and compares it with the preset signal strength threshold. If the RSSI value is higher than the threshold, it indicates that the signal reception is good, and the control unit will generate a "signal normal" decision result; if the RSSI value is lower than the threshold, it indicates that the signal reception quality is poor, and there may be signal fading, interference, or other faults. At this time, the control unit will generate a "signal abnormal" decision result. Based on the signal decision result, the control unit will decide whether to trigger the alarm mechanism, conduct fault troubleshooting, or adjust network parameters. Subsequently, it will send the signal decision result to the remote management platform through the signal backhaul unit to achieve real-time monitoring of the signal status of the in-building distribution system. As time goes by and the network environment changes, the preset signal strength threshold may need to be dynamically adjusted. The control unit has the ability of self-learning and adaptation, and can automatically or semi-automatically update the threshold according to the actual signal monitoring data to maintain the accuracy and effectiveness of the decision.

[0061] In this embodiment, through the signal strength comparison and judgment process based on the RSSI value, the control unit can timely and accurately evaluate the signal quality of the indoor distribution system, improve the maintenance efficiency, and provide a strong guarantee for the long-term stable operation of the indoor distribution system.

[0062] The signal judgment result can be generated based on the signal receiving power. Optionally, in the signal monitoring system provided in an embodiment of the present application, when the baseband signal characteristics include the signal receiving power, the control unit determines the signal judgment result by comparing the signal receiving power with a preset signal receiving power threshold.

[0063] In some examples, after the signal detection chip completes the down-conversion, analog-to-digital conversion and baseband demodulation of the RF signal, it will calculate the RSRP, that is, the signal received power. In the control unit, the signal received power threshold for different communication formats and frequency bands is preset according to factors such as network planning, signal propagation environment and historical data. The control unit reads the RSRP value output by the signal detection chip and accurately compares it with the stored signal received power threshold. If the RSRP value is higher than the preset threshold, it indicates that the signal quality is good, and the control unit determines the signal as normal; conversely, if the RSRP value is lower than the threshold, it means that the signal quality is poor, there is weak coverage, interference or other problems, and the control unit will generate a signal abnormality judgment result. The control unit starts the corresponding troubleshooting or network optimization process based on the signal judgment result. For example, if the RSRP value is detected to be continuously lower than the threshold, it may indicate that the antenna position is not good or there are obstacles blocking the signal. The control unit will send this information together with detailed monitoring data to the back-end management system for further diagnosis and processing. The control unit sends the signal judgment result to the communication network through the signal return unit, and finally reaches the remote management platform. In order to adapt to changes in the network environment, the control unit has intelligent learning and adaptive adjustment functions. It can dynamically adjust the signal receiving power threshold according to the data trend of continuous monitoring to ensure the continuous accuracy and effectiveness of the judgment.

[0064] In this embodiment, through the signal receiving power comparison and judgment process based on the RSRP value, the control unit can realize accurate monitoring and judgment of the signal quality of the indoor distribution system, ensure the real-time monitoring of the signal status of the indoor distribution system, facilitate maintenance personnel to respond quickly to abnormal situations, and improve the efficiency and quality of network maintenance.

[0065] The signal judgment result can be generated based on the signal reception quality. Optionally, in the signal monitoring system provided in an embodiment of the present application, when the baseband signal characteristics include signal reception quality, the control unit determines the signal judgment result by comparing the signal reception quality with a preset signal reception quality threshold.

[0066] In some examples, after the signal detection chip completes processing such as down-conversion of the radio frequency signal, analog-to-digital conversion, digital down-conversion, and baseband demodulation, it calculates the RSRQ, that is, the signal reception quality. RSRQ is one of the important indicators for measuring signal quality, which takes into account the ratio of the reference signal received power (RSRP) to the total received power within the signal bandwidth (including signals, interference, and noise). In the control unit's memory, signal reception quality thresholds are preset for different communication systems and frequency bands. The control unit reads the RSRQ value output by the signal detection chip and compares it with the preset signal reception quality threshold. If the RSRQ value is higher than the preset threshold, it indicates good signal reception quality; conversely, if the RSRQ value is lower than the threshold, it means poor signal reception quality, and there may be coverage problems, interference, or equipment failures. The control unit generates a corresponding signal decision result based on this comparison result, indicating the normal or abnormal state of the signal.

[0067] Based on the signal decision result, the control unit initiates the corresponding processing flow. For normal signals, usually no special operation is required; for abnormal signals, the control unit generates a warning message and sends the detailed monitoring data (including the RSRQ value, timestamp, location information, etc.) to the backend management system together. The backend system conducts in-depth analysis based on this information to guide on-site maintenance personnel to conduct fault troubleshooting and repair, or automatically adjust network parameters to optimize signal quality. The control unit sends the signal decision result to the remote management platform through the signal feedback unit, and realizes real-time transmission of information via the operator's 4G / NB-IOT / 5G network. To cope with the continuous changes in network conditions and in-building distribution environments, the control unit has the ability of self-learning and adaptive adjustment, and can automatically or manually adjust the signal reception quality threshold according to long-term monitoring data to maintain the accuracy and effectiveness of the decision result and avoid misjudgment caused by fixed thresholds in a changing environment.

[0068] Through the signal reception quality comparison and decision process based on the RSRQ value in this embodiment, the control unit can accurately evaluate the signal quality of the in-building distribution system, quickly respond to abnormal situations, and significantly improve the efficiency of network maintenance and the reliability of signal service quality.

[0069] The signal decision result can be generated based on the physical cell identifier. Optionally, in the signal monitoring system provided in the embodiments of the present application, when the baseband signal feature includes the physical cell identifier, the control unit determines the signal decision result through the switching result of the physical cell identifier.

[0070] In some examples, after the signal detection chip processes the radio frequency signal, it will parse out the PCI information carried in the signal, that is, the physical cell identifier. PCI is a unique identifier used to distinguish different cells in LTE and 5G networks. The control unit continuously monitors the change of the PCI value, especially the PCI handover event. When it is detected that the PCI value switches from one value to another, it indicates that the terminal may enter the coverage area of another cell from the coverage area of one cell, or the signal source in the in-building distribution system has switched. The control unit analyzes the handover frequency of PCI, the handover stability, and whether the PCI value after handover belongs to a preset target cell list. Frequent or unstable PCI handovers may indicate serious signal coverage problems in the in-building distribution system, such as inter-cell interference, coverage blind spots, or unstable signal sources. And if the PCI value after handover does not match the expectation, it may indicate a signal source configuration error or a hardware failure.

[0071] Based on the analysis of the PCI handover result, the control unit generates a signal decision result. If the PCI handover is smooth and meets the expectation without abnormal handover events, the control unit determines the signal status as normal. On the contrary, if an abnormal handover event is detected, the control unit will generate a decision result of signal abnormality, indicating the existence of potential signal quality or coverage problems in the in-building distribution system. The control unit triggers corresponding processing procedures according to the signal decision result. For the normal signal status, the control unit usually remains in the monitoring state; for the abnormal signal status, it will generate a warning message and send the detailed PCI handover information, monitoring time, and location data to the backend management system. The backend system conducts in-depth analysis based on this information to guide the maintenance personnel to conduct fault troubleshooting and repair, or automatically adjust network parameters, such as optimizing the PCI configuration, to ensure the correctness of the signal source and the continuity of signal coverage in the in-building distribution system. The control unit sends the signal decision result to the remote management platform through the signal feedback unit. To adapt to the changes in the network environment and the in-building distribution system configuration, the control unit has the ability of dynamic learning and adaptive adjustment. It can automatically or manually adjust the judgment criteria and thresholds for PCI handover events based on long-term PCI monitoring data to ensure the accuracy and timeliness of the decision result.

[0072] Through the signal decision process based on the PCI handover result in this embodiment, the control unit can evaluate the signal source configuration and signal coverage status of the in-building distribution system, and discover and respond to abnormal situations in a timely manner.

[0073] According to another embodiment of the present application, there is also provided a signal processing method applying a signal monitor. Figure 4 It is a flowchart of the signal processing method provided by the embodiment of the present application. As Figure 4 shown, the method includes:

[0074] Step S401: Receive a signal selection instruction and determine multiple target radio frequency signals to be detected.

[0075] Specifically, the core control unit of the signal monitor receives the signal selection instruction. This instruction can be issued by the background network management system or pre-stored on the signal monitor, including the selection of operators (selecting a single operator, multiple operators, or all operators), the selection of communication systems (detecting signals only for a single communication system or multiple communication systems), the selection of frequency bands (detecting signals only for the selected frequency bands or all frequency bands), the selection of bandwidth, etc. Based on the signal selection instruction, the target radio frequency signals to be detected are selected.

[0076] Step S402: Process multiple target radio frequency signals sequentially through time-division multiplexing.

[0077] Specifically, the control unit processes multiple target radio frequency signals sequentially through time-division multiplexing. First, a communication system is selected, and signals are detected sequentially for the selected operator and the selected frequency bands under this communication system, and the detection results are recorded; for example, signals are detected for 5G NR first; then signals are detected sequentially for other communication systems and the selected frequency bands under these communication systems, such as detecting and recording the results of 4G LTE signals.

[0078] For example, for the detection of 4G and 5G dual-mode signals, the control unit sorts the order of signal detection and processing according to which system the signal return unit uses. If the selected return signal is 4G, the signal processing process is: first process 5G signals, and finally process 4G signals. After signal detection is completed, the detection results are returned based on the 4G network; if the selected return signal is 5G, the signal processing process is: first process 4G signals, and finally process 5G signals. After signal detection is completed, the detection results are returned based on the 5G network.

[0079] Step S403: Extract baseband signal characteristics from the processed multiple target radio frequency signals and generate a decision result of signal quality based on the baseband signal characteristics.

[0080] Specifically, the baseband signal characteristics are obtained through a signal detection chip. The baseband signal characteristics can include: SINR, RSRP, RSRQ, RSSI, signal frequency point information, signal frequency band information, PCI, etc. The control unit makes a decision on signal quality based on certain criteria, such as the RSSI decision method, the RSRP decision method, the PCI decision method, etc., and outputs the decision result to the signal return unit;

[0081] Step S404: Transmit the decision result back to the background network management platform.

[0082] Specifically, the signal feedback unit feeds back the signal decision result to the back-end network management platform. The back-end network management platform performs subsequent processing based on the signal decision result, such as generating warning messages, conducting in-depth analysis based on the warning messages, guiding maintenance personnel to troubleshoot and repair faults, or automatically adjusting network parameters.

[0083] Through the signal processing method of this embodiment, based on the intelligent scheduling of the control unit, comprehensive detection of baseband signal characteristics, intelligent signal quality decision-making, and instant signal feedback, efficient, accurate, and real-time detection of in-building distribution signals is achieved.

[0084] It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order than here.

[0085] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, system, or computer program product. Therefore, the present application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memory, CD-ROM, optical memory, etc.) containing computer-usable program code.

[0086] The present application is described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each flow and / or block in the flowchart and / or block diagram can be implemented by computer program instructions, and the combination of flows and / or blocks in the flowchart and / or block diagram can also be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices generate a device for implementing the functions specified in Figure 1 one or more flows and / or Figure 1 blocks or multiple blocks.

[0087] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory generate a manufactured product including an instruction device, and the instruction device implements the functions specified in Figure 1 one or more flows and / or Figure 1 blocks or multiple blocks.

[0088] These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process. Thus, the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one process Figure 1 one process or multiple processes and / or blocks Figure 1 steps for implementing the functions specified in one block or multiple blocks.

[0089] In a typical configuration, a computing device includes one or more processors (CPUs), an input / output interface, a network interface, and memory.

[0090] The memory may include non-permanent memory in the computer-readable medium, in the form of random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash memory (flash RAM). The memory is an example of a computer-readable medium.

[0091] Computer-readable media includes permanent and non-permanent, removable and non-removable media, and information storage can be implemented by any method or technology. The information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassette tapes, magnetic disk storage or other magnetic storage devices, or any other non-transmission media that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transitory computer-readable media, such as modulated data signals and carrier waves.

[0092] It should also be noted that the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, commodity or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, commodity or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the existence of additional identical elements in the process, method, commodity or device comprising the element.

[0093] Those skilled in the art should understand that the embodiments of the present application can be provided as methods, systems or computer program products. Therefore, the present application can take the form of a complete hardware embodiment, a complete software embodiment or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0094] The above are only the embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

1. A signal monitoring system, characterized in that, Comprising: A power supply terminal that provides power to the signal monitor via a wired power supply link; The signal monitor, connected to the power supply terminal via the wired power supply link, for receiving radio frequency signals of multiple communication systems and multiple frequency bands emitted by an antenna, processing the radio frequency signals in a time-division multiplexing manner, generating a signal decision result for the radio frequency signals, and sending the signal decision result to a communication network; The communication network, wirelessly connected to the signal monitor, for receiving the signal decision result sent by the signal monitor and sending the signal decision result to a back-end management system.

2. The signal monitoring system according to claim 1, wherein The signal monitor includes: A signal receiver for receiving radio frequency signals of multiple communication systems and multiple frequency bands emitted by the antenna and filtering the radio frequency signals to obtain filtered radio frequency signals; A reusable radio frequency circuit, connected to the signal receiver, for detecting the filtered radio frequency signals by time-division multiplexing a radio frequency link in different time periods to obtain target radio frequency signals; A signal detection chip, connected to the reusable radio frequency circuit, for performing signal processing on the target radio frequency signals to obtain baseband signal characteristics, where the signal processing includes at least one of the following: radio frequency down-conversion, analog conversion, digital down-conversion, and baseband demodulation processing; A control unit, connected to the signal receiver, the reusable radio frequency circuit, and the signal detection chip, for generating the signal decision result based on the baseband signal characteristics and sending the signal decision result to the communication network.

3. The signal monitoring system according to claim 2, wherein The signal monitor further includes: A signal feedback unit, connected to the control unit and the signal detection chip, for feeding back the signal decision result to the communication network.

4. The signal monitoring system according to claim 2, characterized in that, The signal monitor further includes: A power supply conversion unit for converting the power provided by the power supply terminal into the operating power of the signal receiver, the reusable radio frequency circuit, the signal detection chip, the control unit, and the signal feedback unit.

5. The signal monitoring system according to claim 2, characterized in that, The control unit is used to receive a signal selection instruction, where the signal selection instruction is used to indicate selecting radio frequency signals of a target operator, a target communication system, a target frequency band, and a target bandwidth as monitoring objects.

6. The signal monitoring system according to claim 2, characterized in that, When the monitored radio frequency signals include radio frequency signals of a first communication system and a second communication system, determining the processing order of the radio frequency signals of the first communication system and the second communication system based on the feedback network of the signal feedback unit, where the feedback network is the network corresponding to the first communication system or the network corresponding to the second communication system.

7. The signal monitoring system according to claim 2, wherein When the baseband signal characteristics include the received signal strength, the control unit determines the signal decision result by comparing the magnitude relationship between the received signal strength and a preset signal strength threshold.

8. The signal monitoring system according to claim 2, wherein When the baseband signal characteristics include the signal reception power, the control unit determines the signal decision result by comparing the magnitude relationship between the signal reception power and a preset signal reception power threshold.

9. The signal monitoring system according to claim 2, characterized in that, When the baseband signal feature includes signal reception quality, the control unit determines the signal decision result by comparing the signal reception quality with a preset signal reception quality threshold.

10. The signal monitoring system according to claim 2, wherein, When the baseband signal feature includes a physical cell identifier, the control unit determines the signal decision result based on the switching result of the physical cell identifier.

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