A method for detecting wireless signals of a base station, a monitoring terminal and a system

Abstract

The present invention provides a base station radio signal detection method, a monitoring terminal and a system. In the base station radio signal detection method, the monitoring terminal starts to execute a monitoring task: performs cell scanning within a preset frequency band set to obtain a scanning result of the physical location where the monitoring terminal is located, where the scanning result includes signal strength and cell ID; uploads the scanning result. The present invention performs cell scanning without relying on a SIM card, does not depend on the SIM cards of each operator, simultaneously tests the base station radio signals of multiple operators, and only uses the communication module of the monitoring terminal to upload the scanning result to the wireless monitoring platform server. The wireless monitoring platform server analyzes the coverage of the base station radio signals of the operator according to the received scanning result, and can also detect abnormal situations such as whether the monitoring terminal is stolen based on the scanning result.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless network communication, and particularly to a method for detecting wireless signals of a base station, a monitoring terminal and a system. Background Art

[0002] Current mobile communication networks such as 4G and 5G are indispensable infrastructures for people's livelihood and economic development. To ensure the usage experience of 4G and 5G networks, communication operators conduct a large number of network tests daily, and effective means are needed to continuously and effectively monitor the wireless signal coverage in important scenarios, timely discover network blind spots and carry out network construction or optimization. The wireless coverage environment of mobile communication is usually relatively complex, with the characteristics of fault invisibility and management blind spots. For example, Figure 1 as shown in the figure, the building blocks the wireless signal, resulting in weak signals at the terminal. Among the existing solutions for detecting wireless signals of communication operators, there are two types: testing based on a spectrum analyzer and testing based on a SIM (Subscriber Identity Module) card.

[0003] (1) Detection based on a spectrum analyzer

[0004] A spectrum analyzer (frequency characteristic tester, abbreviated as spectrum analyzer) is a special test instrument that can directly display the frequency characteristics of the measured circuit on the oscilloscope screen. That is, it is an instrument that combines a sweep signal generator, a frequency marker signal generator and an oscilloscope. The frequency characteristic curve of the measured circuit can be visually seen, which is convenient for adjusting circuit components when the circuit is working to make its working frequency meet the specified technical requirements. It can be used to test and adjust the frequency characteristics of active and passive four-terminal networks within this frequency band.

[0005] Enterprises such as communication operators generally purchase spectrum analyzers for daily work such as interference testing. Detection based on a spectrum analyzer does not require the operator's SIM card, but only the signal strength can be obtained, and information such as PLMN (Public Land Mobile Network), TAC, and cell ID cannot be obtained; its cost is relatively high, generally worth tens of thousands of yuan; and it is large in volume and weight, not easy to carry, and difficult to continuously monitor the wireless signal coverage.

[0006] (2) Detection based on a SIM card

[0007] The Chinese patents with publication numbers CN216357336U and CN210867723U both disclose base station signal detection solutions based on SIM cards. However, since one communication operator corresponds to one SIM card, all existing patents require the preparation of SIM cards for all communication operators. During the signal detection process, all SIM cards sequentially search for and connect to the base stations of the corresponding communication operators to obtain information such as the signal strength and frequency points of the base stations of that operator. Multiple SIM cards repeat the above process to obtain the base station signal information of all operators, thereby obtaining the coverage of the base station radio signals.

[0008] Although the detection solution based on SIM cards can accurately obtain information such as PLMN, TAC, cell ID, and signal strength, it requires the deployment of test SIM cards for multiple operators, and each test SIM card needs to be unplugged and started one by one, resulting in slow testing speed. Long-term use requires a large amount of maintenance costs for test SIM cards, and the cost is relatively high. In addition, the terminal used to monitor the coverage of base station radio signals needs to operate for a long time, and there is also a risk of theft if the terminal is fixed in an unattended location. Summary of the Invention

[0009] The present invention aims to at least solve the technical problems in the existing base station radio signal detection technology, such as the need for a large number of SIM cards of different communication operators for measurement, long time consumption, high cost, and insufficient detection information, and provides a base station radio signal detection method, a monitoring terminal, and a system.

[0010] To achieve the above object of the present invention, according to the first aspect of the present invention, a base station radio signal detection method is provided. The monitoring terminal starts to execute a monitoring task: perform cell scanning in a preset frequency band set to obtain a scanning result of the physical location where the monitoring terminal is located, where the scanning result includes signal strength and cell ID; upload the scanning result.

[0011] To achieve the above object of the present invention, according to the second aspect of the present invention, a monitoring terminal for implementing the base station radio signal detection method described in the first aspect of the present invention is provided, including a communication module, and an MCU, a SIM card unit, an antenna, and a power supply module respectively connected to the communication module, and the power supply module is also connected to the MCU.

[0012] To achieve the above object of the present invention, according to the third aspect of the present invention, a base station radio signal coverage monitoring method is provided, including: one or more monitoring terminals deployed in the area to be measured execute the steps of the base station radio signal detection method described in the first aspect of the present invention, and report the scanning result to the wireless monitoring platform server; the wireless monitoring platform server records the scanning result uploaded by each monitoring terminal and analyzes the scanning result to obtain the base station radio signal coverage result.

[0013] To achieve the above object of the present invention, according to the fourth aspect of the present invention, the present invention provides a base station radio signal coverage monitoring system for implementing a base station radio signal coverage monitoring method described in the first aspect of the present invention, including: one or more monitoring terminals described in the second aspect of the present invention deployed in the area to be measured; a wireless monitoring platform server for receiving and analyzing the frequency scanning results uploaded by the monitoring terminals.

[0014] The present invention reduces the test time by not performing cell frequency scanning based on SIM cards and not relying on SIM cards of each operator, and simultaneously tests the base station radio signals (such as 4G / 5G network signals) of multiple communication operators including Telecom, Mobile, Unicom, and Radio and Television. By extracting the frequency scanning results including cell ID and signal strength from the base station radio signals, the wireless monitoring platform server analyzes the received frequency scanning results to obtain the coverage of the base station radio signals of the operator. At the same time, based on the frequency scanning results, the wireless monitoring platform server can also detect abnormal situations such as whether the monitoring terminal is stolen. The monitoring terminal has low cost, low power consumption, small size, light weight, is convenient for fixed installation and carrying, and has an anti-theft function, solving the problems of high cost and insufficient detection information in the prior art and facilitating large-scale promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of a building blocking radio signals.

[0016] Figure 2 It is a flowchart of a base station radio signal detection method in a preferred embodiment of the present invention.

[0017] Figure 3 It is a schematic diagram of the hardware structure of a monitoring terminal in a preferred embodiment of the present invention.

[0018] Figure 4 It is a schematic diagram of cardless cell scanning in a preferred embodiment of the present invention.

[0019] Figure 5 It is a flowchart of a base station radio signal coverage monitoring method in a preferred embodiment of the present invention.

[0020] Figure 6 It is a schematic diagram of the structure of a base station radio signal coverage monitoring system in a preferred embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0022] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0023] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the communication inside two elements. It can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0024] In the prior art, to obtain the 4G / 5G network signals of multiple operators, either rely on the SIM cards of multiple operators to complete the test, the test speed is slow and the cost of the test cards is high; or rely on expensive frequency scanning test instruments worth tens of thousands of yuan to test the signal strengths of multiple operators, but information such as PLMN, TAC, and cell ID cannot be obtained. For this reason, the present invention provides a method for detecting base station wireless signals. In a preferred embodiment, as Figure 1 shown, the monitoring terminal starts to execute the monitoring task:

[0025] Step S1, perform cell frequency scanning within a preset frequency band set to obtain the frequency scanning result of the physical location where the monitoring terminal is located. Among them, the frequency scanning result includes the signal strength and the cell ID (i.e., the cell number).

[0026] The signal strength is the wireless signal strength of the operator network. In practice, referring to Figure 6 , the physical location where the monitoring terminal is located covers more than one operator cell and more than one operator base station. During the cell frequency scanning process, it is possible to test the wireless network signals under different network systems (such as 3G / 4G / 5G) of multiple communication operators such as Telecom, Mobile, Unicom, and Radio & TV without relying on the SIM cards of each operator. Key network signal information such as cell ID, base station signal strength, PLMN, and TAC is extracted from these wireless network signals. Finally, the frequency scanning result includes the cell IDs of more than one operator and the signal strength, PLMN, MAC, and frequency points corresponding to the cell ID. Therefore, in the frequency scanning result, the cell ID and its corresponding signal strength are associated, written into the cell data file in a predefined format, and the file is saved in the monitoring terminal. The operator is preferably but not limited to Telecom, Mobile, Unicom, or Radio & TV.

[0027] Step S2, upload the sweep result.

[0028] In this embodiment, in step S2, the sweep result can be uploaded through the communication module built in the monitoring terminal. The communication module is preferably but not limited to communication modules such as WI FI and Bluetooth that do not require a SIM card. The sweep result can be uploaded to a data analysis and processing terminal such as a server or a host computer. Without the need for SIM cards of different operators, wireless signal information of the operator network such as PLMN, TAC, cell ID, and signal strength at the physical location of the monitoring terminal can be tested.

[0029] In a preferred embodiment, for the convenience of long-distance transmission and to avoid the increased cost caused by building a local area network such as WI FI, the communication module is a radio frequency communication module supporting SIM card functions of 2G / 3G / 4G / 5G.

[0030] In this embodiment, the SIM card function can be turned on or off when step S1 is executed. When step S2 is executed, the SIM card function needs to be turned on.

[0031] In this embodiment, after the cell data file is saved to the monitoring terminal, the monitoring terminal enables the built-in SIM card. This SIM card can be a SIM card of any operator. The monitoring terminal starts the network access process of its configured network mode (such as 4G / 5G), connects to the base station corresponding to the SIM card operator, and then accesses the operator's network to upload the sweep result through the operator's network. The sweep result can be uploaded to a data analysis and processing terminal such as a server or a host computer.

[0032] It can be seen that the solution of the present invention combines the advantages of SIM card-based testing and sweep test instruments. When the monitoring terminal tests signals, it does not require SIM cards of different operators, only one SIM card is needed, but it can test wireless signal information of the operator network such as PLMN, TAC, cell ID, and signal strength at the physical location of the monitoring terminal, obtain the base station ID, cell ID, and longitude and latitude data of the location, reduce test processes such as changing cards, and speed up the test speed. The monitoring terminal has low equipment cost, is convenient for large-scale promotion, is small in size and light in weight, is convenient for fixed installation, carrying, and unattended monitoring.

[0033] In a preferred embodiment, to reduce the power consumption of the monitoring terminal and extend the usage time of the monitoring terminal, in step S2, the step of uploading the sweep result through the network of the SIM card corresponding operator includes:

[0034] Step S21, the monitoring terminal successfully connects to the base station corresponding to the SIM card through the SIM card. Obtain the time zone where the base station is located and the base station clock.

[0035] Step S22: Synchronize the system clock of the monitoring terminal to the base station clock, which facilitates the monitoring terminal to accurately execute the monitoring task at a fixed time.

[0036] Step S23: Upload the scanning result through the network of the corresponding operator of the SIM card.

[0037] Step S24: Control the monitoring terminal to enter the low-power mode and wait for the next monitoring task.

[0038] In a preferred embodiment, the monitoring terminal is configured to start the monitoring task at a fixed time; alternatively, the monitoring terminal is started by a user operation instruction or a host-end instruction.

[0039] In this embodiment, the host-end instruction refers to the host-end instruction sent by an external control end such as a host computer or a server to the monitoring terminal, and the external control end can send the host-end instruction at a fixed time or at any time. The user operation instruction is triggered by input components such as buttons and touch screens configured on the monitoring terminal.

[0040] In a preferred embodiment, in step S1, performing cell scanning within the preset frequency band set includes:

[0041] Step S11: Determine the preset frequency band set according to the network mode frequency band set supported by the monitoring terminal, the network mode or frequency band specified by the monitoring task.

[0042] The monitoring terminal can be a terminal device of a certain operator, preferably a 5G / 4G terminal device, which supports 5G / 4G frequency bands and is backward compatible with 3G and 2G communication frequency bands, and obtains a frequency band set, denoted as the first frequency band set. The monitoring task can specify part or all of the network mode frequency band sets according to service requirements, or the monitoring task can directly specify the frequency band set according to service requirements, and denote the frequency band set specified by the monitoring task as the second frequency band set. Take the intersection of the first frequency band set and the second frequency band set as the preset frequency band set.

[0043] Step S12: Perform cell scanning one by one for each frequency band or frequency point in the preset frequency band set.

[0044] Cell scanning can be performed one by one for each frequency band, or one by one for each frequency point of each frequency band.

[0045] In a preferred embodiment, to enrich the scanning result and help the background wireless monitoring platform server perform anti-theft detection, the scanning result further includes the base station ID and / or location information. The location information can specifically be longitude and latitude data.

[0046] The present invention also discloses a monitoring terminal for implementing the above-mentioned base station radio signal detection method. In a preferred embodiment, the monitoring terminal includes a communication module, an MCU, an antenna ANT, and a power supply module that are respectively connected to the communication module. The power supply module is also connected to the MCU.

[0047] In a preferred embodiment, referring to Figure 3 , it further includes a SIM card unit, and the SIM card unit is connected to the communication module.

[0048] In this embodiment, the power supply module is preferably but not limited to a main battery, which is used to supply power to the entire monitoring terminal, that is, to supply power to the MCU and the communication module. The antenna ANT can be an internal antenna or an external antenna, which is used for cell spectrum scanning and wireless signal transceiver for the monitoring terminal to access the operator network. The MCU is a low-power MCU with an internal clock and can enter the sleep state. When the monitoring terminal is configured to execute the monitoring task at a fixed time, after the monitoring terminal enters the sleep state, the timing task starts. When the timing is completed, the MCU is activated and controls the communication module to power on and off at a fixed time.

[0049] In this embodiment, the communication module preferably but not limited to includes at least one of the existing 2G communication module, 3G communication module, 4G communication module, and 5G communication module, which is specifically matched with the network mode configured by the monitoring terminal. The communication module mainly realizes cell spectrum scanning, monitoring data recording, and uploading of the frequency scanning results. The MCU communicates with the communication module through the UART serial port. After the communication module completes the cell spectrum scanning and uploads the frequency scanning results, it sends a message to the MCU through the UART port. After receiving the message, the MCU controls the power supply of the communication module to be disconnected through the GPIO port, and the communication module powers off.

[0050] In this embodiment, the SIM card is used for the communication module to access the operator network and upload the local cell spectrum scanning result data to the wireless monitoring platform server.

[0051] In this embodiment, preferably, the monitoring terminal is configured to start the monitoring task at a fixed time. When the monitoring terminal is awakened from the low-power mode, it performs: waking up the communication module at the agreed test time using a timer; controlling the communication module to power on; the communication module performs cell scanning in the preset frequency band set to obtain the frequency scanning results; after uploading the cell data, controlling the communication module to power off and enter the low-power mode.

[0052] In this embodiment, in an example where a monitoring terminal controls the communication module to wake up and sleep based on the MCU. The specific implementation process is as follows:

[0053] Using an MCU, by reasonably allocating the running time and idle time, the current consumption can be effectively reduced and the battery life can be extended. The overall solution is as follows: The MCU usually works in the low-power mode. When the MCU needs to work, it is woken up. At the same time, the timer is used to periodically switch the battery power supply on and off, so that the communication module can complete power-on, spectrum scanning, data uploading, battery power monitoring, and feedback confirmation after data uploading. Finally, the communication module power supply is turned off, and the MCU is configured to enter the low-power mode, which can keep running while consuming only extremely low power. The MCU provides the following interfaces externally:

[0054] UART1 is used for debugging through the Console port and is directly output from the PCB;

[0055] UART2 is used as the communication port with the communication module;

[0056] UART3 is used as the AT command port with the communication module;

[0057] SPI Slave is used as a high-speed data transmission channel to communicate with the communication module;

[0058] ADC is used to obtain the battery power;

[0059] GPIOm is externally connected to the GPIOm of the communication module and an external jumper cap is connected to control the working state of the MCU;

[0060] GPIOn is used to control the power switch of the communication module;

[0061] After the MCU is reset and starts up, check the input status of the GPIOm pin:

[0062] (1) If it is at a low level: Run in the debug mode, power on the communication module through the GPIOn pin, and then wait for and respond to the messages of the communication module. At this time, the watchdog function of the communication module is not enabled;

[0063] (2) If it is at a high level: Run in the working mode, power on the communication module through the GPIOn pin, and then wait for and respond to the messages of the communication module. At this time, the watchdog function of the communication module is enabled.

[0064] The MCU receives a power-off notice. Control the communication module to power off through the GPIOn pin, then set the next wake-up time according to the "start wake-up time / wake-up frequency", and enter the low-power state; If the MCU enables the watchdog function of the communication module and does not receive a power-off notice after the scheduled time, then force the communication module to power off, and then set the next wake-up time according to the "start wake-up time / wake-up frequency".

[0065] The MCU usually operates in a low-power mode. When the MCU needs to work, it is woken up. At the same time, a timer is used to wake up the communication module at the agreed test time, turn on the battery power supply, so that the communication module can complete power-on, spectrum scanning, data uploading, battery power monitoring, and feedback confirmation after data uploading is completed. Finally, the power supply of the communication module is turned off, and the MCU is configured to enter the low-power mode. The MCU can keep running in the low-power mode while consuming only extremely low power, and its power consumption can be as low as 5 μA - 20 μA. Therefore, the power consumption of the timer in this solution is approximately 3.7 * 0.02 * 24 * 365 * 5 = 3.24 Wh, that is, the power of 3.7 V 876 mAh, which is 1 / 50 of the module's sleep state. Compared with the existing test solution without MCU control, it can greatly extend the standby time of the test terminal and has the ability of long-term fixed-point testing.

[0066] Figure 4 The schematic diagram of the cardless cell scanning performed by the monitoring terminal in an example. The communication module of the wireless signal monitoring terminal receives the scanning instruction from the application layer and sends it to the modem. The modem analyzes and processes the scanning instruction, takes the intersection of the network capability set configured by itself and the user-set parameters, and sends it to the RRC link layer through the non-access stratum (NAS) for scanning. The link layer configures the radio resources and sends instructions to the physical layer to start searching for the network. The radio frequency baseband searches for the network signals under the corresponding network mode according to the radio frequency capabilities of the module's hardware, scans all the Bands configured according to the current network mode, and after the scanning is completed, uniformly reports the searched cell information including PLMN, cell ID, RAT, etc. to the application side, and obtains the base station ID, cell ID, longitude and latitude data of the location. In particular, the above network search process will always occupy the radio frequency resources. If there are high-priority tasks such as incoming calls and data transmission, the network search process will be interrupted and an immediate failure will be returned. Therefore, it needs to be executed in the idle state or without a card. Compared with the existing test solution, the requirement for the SIM card is omitted, which greatly reduces the hardware cost and operation cost of the test terminal.

[0067] In a preferred embodiment, to achieve unattended automatic monitoring, the monitoring terminal automatically obtains configuration information, specifically including:

[0068] Step 1, the communication module dials a number. After the dialing is successful, the system clock of the monitoring terminal is synchronized to the base station clock of the corresponding supplier of the SIM card;

[0069] Step 2, the communication module reports the terminal information to the monitoring platform server;

[0070] Step 3, the monitoring platform server sends the corresponding configuration information to the communication module, and the configuration information includes the location information of the monitoring terminal and the address of the network management server.

[0071] In an example of this embodiment, the specific process of the monitoring terminal for wireless monitoring result scanning upload and configuration acquisition includes:

[0072] (1) The communication module dials. After successful dialing, it obtains the time zone where the base station is located and the current clock, and synchronizes the system clock of the monitoring terminal to the base station clock.

[0073] (2) The communication module reports the current frequency scanning result. It uploads to the wireless monitoring platform server through a predetermined interface.

[0074] (3) The communication module reports historical data. It uploads to the network management server through a predetermined interface. After successful reporting, it deletes the locally reported successful historical data (to prevent repeated reporting next time).

[0075] (4) The communication module enters the terminal status reporting. It reports the following information through a predetermined interface: device description information, location information, serial number, ICCID, start wake-up time / wake-up frequency, hardware board type, hardware version number, hardware BOM ID, system version number, module model, module firmware version number, MCU model, MCU firmware version number, battery voltage, remaining battery power, network management server address.

[0076] (5) The communication module acquires configuration information. It acquires the following information through a predetermined interface: device description information, location information, start wake-up time / wake-up frequency, network management server address.

[0077] The communication module accesses a pre-agreed interface in an active manner. On the one hand, it uploads the frequency scanning result to the wireless monitoring platform server; on the other hand, it can acquire test configuration parameters such as device description information, location information, start wake-up time / wake-up frequency, and wireless monitoring platform server address. This method can achieve unmanned management operation, and there is no need to add additional hardware configuration. It has a simple structure, low cost, low energy consumption, and is convenient for large-scale deployment.

[0078] In a preferred embodiment, for the convenience of accurate anti-theft monitoring, the monitoring terminal further includes a positioning module, and the positioning module is used to acquire the positioning information of the monitoring terminal.

[0079] In this embodiment, the positioning module is preferably but not limited to a Beidou positioning module or a GPS positioning module, and it is connected to the MCU for communication.

[0080] The present invention also discloses a method for monitoring the wireless signal coverage of a base station. In a preferred embodiment, as shown in Figure 5 it includes:

[0081] Step A, one or more monitoring terminals deployed in the area to be measured execute the steps of the above-mentioned method for detecting the wireless signal of a base station, and report the frequency scanning result to the wireless monitoring platform server.

[0082] In this embodiment, the area to be measured is preferably but not limited to the area inside and outside the elevator of a building, or an indoor area, or a field area. One or more monitoring terminals can be deployed in the area to be measured according to needs. The distance between the monitoring terminals can be from several meters to thousands of meters. The monitoring terminals can be deployed in a fixed position, and the fixed-position deployment method can achieve unattended monitoring. The monitoring terminals can also be deployed in a mobile position, which is to move the monitoring terminals in the area to be measured for wireless signal monitoring throughout the area to be measured, so as to reduce the number of monitoring terminals and save costs. Each monitoring terminal executes the monitoring task and reports the obtained frequency scanning results to the wireless monitoring platform server.

[0083] Step B, the wireless monitoring platform server records the frequency scanning results uploaded by each monitoring terminal, and analyzes the frequency scanning results to obtain the base station wireless signal coverage results.

[0084] In this embodiment, the specific form of the frequency scanning results can be a cell data file. The wireless monitoring platform server parses all the frequency scanning results, obtains the operator base station cell signal coverage data (such as signal strength) at the physical locations of each monitoring terminal, and displays it.

[0085] In this embodiment, to further analyze the base station cell signal coverage at the monitoring terminal location points, preferably, the historical frequency scanning results reported by each monitoring terminal are recorded to form a report. By analyzing the historical frequency scanning results, an alarm prompt is generated for the cells that show abnormalities (such as the signal strength being weak frequently, or always being in a weak signal strength state, etc.).

[0086] In a preferred embodiment, for the monitoring terminals deployed in a fixed position, due to long-term unattended operation, anti-theft detection and abnormal status monitoring are required. This method further includes:

[0087] If the wireless monitoring platform server does not receive the frequency scanning results sent by a certain monitoring terminal within a preset time period, a first alarm for this monitoring terminal is initiated. The first alarm indicates that the monitoring terminal may have a fault abnormality and / or a theft risk warning. After the relevant personnel receive the first alarm for this monitoring terminal, they can go to the site for inspection in time.

[0088] In a preferred embodiment, for the monitoring terminals deployed in a fixed position, due to long-term unattended operation, anti-theft detection and abnormal status monitoring are required. This method further includes:

[0089] It is assumed that the frequency scanning results reported by the monitoring terminal include at least one of the cell ID, the base station ID, and the positioning information.

[0090] After receiving the new frequency scanning result sent by the monitoring terminal, the wireless detection platform server determines whether there is a difference in at least one of the cell ID, base station ID, and positioning information between the new frequency scanning result of the monitoring terminal and the recorded frequency scanning result. If there is a difference (indicating that the actual physical location of the monitoring terminal has changed), the second alarm for the monitoring terminal is activated. The second alarm indicates that the risk of theft of the monitoring terminal is relatively high, and relevant personnel are required to verify it as soon as possible.

[0091] In this embodiment, to improve the processing efficiency and judgment result, hierarchical judgment is performed. The process by which the wireless detection platform server determines whether there is a difference in at least one of the cell ID, base station ID, and positioning information between the new frequency scanning result of the monitoring terminal and the recorded frequency scanning result is as follows:

[0092] Step B0, if there is positioning information in the frequency scanning result, step B1 is executed; if there is no positioning information in the frequency scanning result, step B2 is executed.

[0093] Step B1, determine whether there is a difference in the positioning information between the new frequency scanning result and the positioning information in the previously recorded frequency scanning result. If there is a difference, the second alarm for the monitoring terminal is activated, and the judgment ends.

[0094] Step B2, determine whether there is a difference in the cell ID of each operator between the new frequency scanning result and the cell ID of each operator in the previously recorded frequency scanning result. If there is a difference in the cell ID of at least one operator, step B3 is entered; otherwise, the judgment ends and it is considered normal.

[0095] Step B3, if there is a base station ID in the frequency scanning result, step B4 is executed; otherwise, step B5 is executed.

[0096] Step B4, determine whether there is a difference in the base station ID associated with the cell ID with a difference between the new frequency scanning result and the base station ID associated with the cell ID with a difference in the previously recorded frequency scanning result. If there is a difference, the second alarm for the monitoring terminal is activated, and the judgment ends, indicating that the monitoring terminal may be located at the junction of adjacent cells covered by the same base station of this operator. If there is no difference, the risk of theft is considered low, and wait for the next report. If the number of cell IDs with differences in the frequency scanning result increases after the next report, the risk of theft is considered to increase, indicating that the monitoring terminal is moving, and the second alarm for the monitoring terminal is activated. If the number of cell IDs with differences in the frequency scanning result decreases or remains unchanged after the next report, it is considered normal.

[0097] Step B5: If the number of cell IDs with differences is greater than or equal to 2, initiate the second alarm for this monitoring terminal and end the judgment. If the number of cell IDs with differences is less than 2, it is considered that the theft risk is relatively low, and wait for the next report. If, after the next report, the number of cell IDs with differences in the sweep result increases, it is considered that the theft risk has increased, indicating that the monitoring terminal is moving, and initiate the second alarm for this monitoring terminal. If, after the next report, the number of cell IDs with differences in the sweep result decreases or remains unchanged, it is considered normal.

[0098] In a preferred embodiment, to improve the processing efficiency and judgment results, hierarchical judgment is performed. At the same time, to prevent thieves from stealing the monitoring terminal and removing the main battery, resulting in the monitoring terminal being unable to work, being unable to determine whether it has been stolen based on the sweep results reported by the monitoring terminal, and being unable to monitor the location information of the monitoring terminal and other problems. The following settings are made:

[0099] The monitoring terminal is provided with a backup battery and a power supply switching module, and the power supply switching module is used to realize the power supply switching between the main battery and the backup battery of the monitoring terminal. The power supply switching module is connected to the communication module, and preferably but not limited to includes an RFID module and a trigger switch. After the trigger switch is turned on, the monitoring terminal is powered by the backup battery.

[0100] If the wireless monitoring platform server does not receive the sweep result sent by a certain monitoring terminal within the preset time period, initiate the first alarm for this monitoring terminal, and at the same time send a power supply switching instruction to the RFID module of this monitoring terminal. The RFID module outputs an electrical signal to enable the trigger switch to conduct, controls the monitoring terminal to power on, and stably controls the trigger switch to be in the on state to maintain the backup battery power supply.

[0101] The monitoring terminal performs the above cardless scanning and reports the sweep result. The wireless detection platform server judges whether there are differences in at least one of the cell ID, base station ID, and positioning information between the new sweep result of this monitoring terminal and the recorded sweep result. The specific judgment process can refer to steps B0 to B5 in the above preferred embodiment, which will not be elaborated here.

[0102] The present invention also discloses a base station wireless signal coverage monitoring system for implementing the above-mentioned base station wireless signal coverage monitoring method. In a preferred embodiment, referring to Figure 6 , the system includes: one or more of the above-mentioned monitoring terminals deployed in the area to be measured; a wireless monitoring platform server for receiving and analyzing the sweep results uploaded by the monitoring terminals.

[0103] In a preferred embodiment, the system further includes a base station corresponding to the SIM card of one or more monitoring terminals; the wireless monitoring platform server is connected to the monitoring terminal through the base station corresponding to the SIM card of the monitoring terminal and the network.

[0104] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", "one implementation manner", "one preferred implementation manner", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0105] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A base station wireless signal coverage monitoring method, characterized in that: include: One or more monitoring terminals deployed in the area to be tested perform the steps of a base station wireless signal detection method and report the frequency scanning results to the wireless monitoring platform server; The monitoring terminal is deployed in a fixed position; The process of the monitoring terminal executing a base station wireless signal detection method includes: Perform cell frequency scanning in a preset frequency band set to obtain a frequency scanning result of a physical location where the monitoring terminal is located, wherein the frequency scanning result includes a signal strength and a cell ID; the frequency scanning result also includes a base station ID and / or positioning information; Uploading the scanning result; The wireless monitoring platform server records the frequency scanning results uploaded by each monitoring terminal, and analyzes the frequency scanning results to obtain the base station wireless signal coverage results; After receiving the new frequency scanning result sent by the monitoring terminal, the wireless detection platform server determines whether there is a difference between the new frequency scanning result of the monitoring terminal and at least one of the cell ID, base station ID and positioning information in the recorded frequency scanning result. If there is a difference, the second alarm for the monitoring terminal is initiated; The process of the wireless detection platform server determining whether there is a difference between the new frequency scanning result of the monitoring terminal and at least one of the cell ID, base station ID and positioning information in the recorded frequency scanning result is as follows: Step B0: if there is positioning information in the frequency scanning result, execute step B1; if there is no positioning information in the frequency scanning result, execute step B2; Step B1, determining whether there is a difference between the positioning information in the new frequency scanning result and the positioning information in the frequency scanning result recorded last time, and if there is a difference, initiating a second alarm for the monitoring terminal, and ending the determination; Step B2, judging whether there is a difference between the cell ID of each operator in the new scanning result and the cell ID of each operator in the scanning result recorded last time, if there is a difference in the cell ID of at least one operator, proceeding to step B3, otherwise, ending the judgment and considering it normal; Step B3, if the base station ID exists in the frequency scanning result, execute step B4, otherwise execute step B5; Step B4, determine whether there is a difference between the base station ID associated with the cell ID with a difference in the new scanning result and the base station ID associated with the cell ID with a difference in the last recorded scanning result. If there is a difference, start the second alarm for the monitoring terminal and end the judgment, indicating that the monitoring terminal may be located at the junction of adjacent cells covered by the same base station of the operator. If there is no difference, it is considered that the risk of theft is low and wait for the next report. If the number of cell IDs with differences in the scanning result increases after the next report, it is considered that the risk of theft increases, indicating that the monitoring terminal is moving, and start the second alarm for the monitoring terminal. If the number of cell IDs with differences in the scanning result decreases or remains unchanged after the next report, it is considered that there is no abnormality. Step B5, if the number of cell IDs with differences is greater than or equal to 2, the second alarm for the monitoring terminal is activated and the judgment is ended; if the number of cell IDs with differences is less than 2, the risk of theft is considered to be low, and the next report is waited for. If the number of cell IDs with differences in the scanning result increases after the next report, the risk of theft is considered to increase, indicating that the monitoring terminal is moving, and the second alarm for the monitoring terminal is activated. If the number of cell IDs with differences in the scanning result decreases or remains unchanged after the next report, it is considered that there is no abnormality.

2. A base station wireless signal coverage monitoring method as claimed in claim 1, characterized in that: Also includes: If the wireless monitoring platform server does not receive the frequency scanning result sent by a certain monitoring terminal within a preset time period, the first alarm for the monitoring terminal is initiated.

3. A base station wireless signal coverage monitoring method as claimed in claim 1, characterized in that: The uploading of the scanning result includes: The monitoring terminal is successfully connected to the base station of the operator corresponding to the SIM card through the SIM card; Synchronize the system clock of the monitoring terminal to the base station clock; Upload the scanning result through the network of the operator corresponding to the SIM card; Control the monitoring terminal to enter low power consumption mode.

4. A base station wireless signal coverage monitoring method as claimed in claim 1, characterized in that: The performing cell scanning in the preset frequency band set includes: Determine the preset frequency band set by monitoring the network standard frequency band set supported by the terminal and the network standard or frequency band specified by the monitoring task; In the preset frequency band set, cell scanning is performed band by band or frequency point by frequency point.

5. A base station wireless signal coverage monitoring method according to any one of claims 1 to 4, characterized in that: The monitoring terminal is configured to start the monitoring task at a fixed time; or, the monitoring terminal is controlled by a user operation instruction or an upper terminal instruction to start the monitoring task.

6. A base station wireless signal coverage monitoring method as claimed in claim 1, characterized in that: The monitoring terminal includes a communication module, and an MCU, an antenna and a power supply module respectively connected to the communication module, and the power supply module is also connected to the MCU.

7. A base station wireless signal coverage monitoring method as claimed in claim 6, characterized in that: It also includes a SIM card unit, which is connected to the communication module; and / or, It also includes a positioning module, which is used to obtain the positioning information of the monitoring terminal.

8. A base station wireless signal coverage monitoring system, used to implement a base station wireless signal coverage monitoring method according to any one of claims 1 to 7, characterized in that: include: One or more monitoring terminals as claimed in claim 5 deployed in the area to be tested; The wireless monitoring platform server is used to receive and analyze the scanning results uploaded by the monitoring terminal.

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