5G all-standard cellular network signal acquisition and analysis device and method

Abstract

The invention discloses a 5G all-standard cellular network signal acquisition and analysis device and method. According to the invention, by adding the 5G base station information acquisition unit, card / no-card acquisition of 5G base station information is realized; analyzing and distinguishing whether the acquired base stations are co-established and shared from an air interface side through signaling analysis; and whether the current base station is an abnormal base station is distinguished through service signaling analysis in a card mode, so that concurrent, full-quantity and real-time acquisition of the 5G all-standard cellular network is realized. According to the invention, the functions of complete 5G full-standard cellular network base station cell detection information, mobile terminal resident base station trajectory analysis and simulation, base station cell distribution full-amount information research and judgment, abnormal base station judgment, co-construction of a shared base station and the like can be realized.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of wireless communication, and particularly relates to a 5G full-mode cellular network signal collection and analysis device and method. BACKGROUND

[0002] The intelligent full-network wireless signal analysis system and the handheld full-network wireless signal detector have achieved certain results in the field of 2G, 3G and 4G base station wireless signal collection, and have provided a large amount of scene support and data landing for special communication industry application, and have obtained good reputation among user groups.

[0003] With the comprehensive construction of 5G base stations and the promotion of 5G signal coverage and the emergence of new operators of radio and television, the business needs of the special communication industry have also changed, and the full-quantity information collection of base station cells and the big data base station management are a new problem facing the public security department, how to quickly, effectively, truly and fully collect the base station cell air interface network distribution in a specific environment, and provide more efficient and more comprehensive technical support and data support for the big data department, is a technical problem that needs to be innovated and broken through.

[0004] The intelligent full-network wireless signal analysis system and the handheld full-network wireless signal detector give a technical solution for collecting 2G, 3G and 4G base station information in terms of technical solution integration, software maturity and compatible card and non-card information collection. With the 5G technology entering the stage of large-scale commercial use, radio and television as the fourth largest operator has started to commercially operate 4G and 5G networks.

[0005] 5G network construction opportunities and challenges coexist, and in the face of the problem of increasing construction and operation costs, base station co-construction and sharing has become the common choice of each family, that is, mobile radio and television co-construct and share 4G and 5G networks, and China Unicom and China Telecom co-construct and share 4G and 5G networks. In this way, some base station cells have information of two operators at the same time, so that the base station cell information analysis data cannot be effectively distinguished, which hinders the use of data by the data use department.

[0006] Therefore, the original product and technology cannot meet the current network environment use requirements, and the original technical solution, although compatible with the card and non-card design, actually uses the combination of embedded esim card and auxiliary non-card. Although the integration has been improved, the complexity has also increased by several times, and the main control, card unit and non-card unit need to work together to complete the function. Therefore, how to solve the technical compatibility of the card / non-card with a single radio frequency unit, how to collect 5G base station information, and how to distinguish whether the base station is co-constructed and shared are major technical upgrade problems that need to be solved. SUMMARY

[0007] This invention addresses the shortcomings of existing technologies in achieving technical compatibility between SIM-enabled and SIM-free base station cell information collection equipment and in the lack of 5G base station information collection capabilities. It provides a 5G full-mode cellular network signal acquisition and analysis device and method.

[0008] This invention aims to solve the problem of SIM-enabled / SIM-less cellular data collection through a compatibility algorithm. It achieves SIM-enabled / SIM-less 5G base station information collection by adding a 5G base station information collection unit. It distinguishes whether the collected base stations are co-built and shared by analyzing the signaling from the air interface side. It also distinguishes whether the current base station is an abnormal base station by analyzing the service signaling in SIM-enabled mode, thereby realizing concurrent, full, and real-time collection of 5G full-mode cellular network data.

[0009] In a first aspect, the present invention provides a 5G full-mode cellular network signal acquisition and analysis device, comprising:

[0010] Multimode RF baseband chip for receiving 2G / 3G / 4G / 5G air interface signals;

[0011] The dual-mode module with / without a SIM card injects a virtual IMSI into the protocol stack to allow the access process to continue when a SIM card is missing.

[0012] The signaling parsing module is used to extract the plmn-IdentityList from SIB1 and mark the cell as co-construction and sharing when multiple operator PLMNs are present, and to mark the cell as abnormal if an RRCConnection Reject message with a rejection code is received after sending the Initial UE Message;

[0013] The output interface is used to send the marked base station information outwards.

[0014] Furthermore, the multi-mode radio frequency baseband chip performs frequency scanning reception and MIB parsing for China Mobile 5G, China Unicom 5G, China Telecom 5G, and China Broadcasting 5G, realizing wireless signal detection for 5G all-mode base station cells.

[0015] Furthermore, the multi-mode radio frequency baseband chip is an SM4350, which is used to complete frequency scanning, MIB reading and PCI acquisition of 5G base station cell information within a single radio frequency unit, thereby realizing air interface acquisition of 5G base stations.

[0016] Furthermore, the cardless / card-enabled dual-mode module automatically identifies and switches between card-enabled and cardless modes within a single radio frequency unit by configuring operator commands, making the same radio frequency unit compatible with both modes.

[0017] Furthermore, in card-enabled mode, the signaling parsing module obtains the information of the terminal's current cell and neighboring cells through the RRC connection process, forming a trajectory record of the mobile terminal's cell.

[0018] Furthermore, the signaling parsing module collects and outputs PCI, frequency point, and RSRP information of the primary cell and neighboring cells under all 2G, 3G, 4G, and 5G standards, realizing the acquisition of full information of the primary and neighboring cells.

[0019] Furthermore, if the signaling parsing module receives an RRC Connection Reject carrying a rejection reason value after sending the Initial UE Message and Tracking Area Update Request, it will automatically identify the cell as an abnormal base station and mark it.

[0020] Furthermore, the signaling parsing circuit parses the plmn-IdentityList in SIB1 through the air interface. When the list carries multiple PLMNs from different operators, it identifies the base station as a co-built and shared base station and marks it accordingly.

[0021] Furthermore, the output interface includes a USB virtual serial port driver CH348L for providing communication with up to 8 UART peripherals, and a DM9051 with an SPI bus for providing an RJ45 Ethernet interface.

[0022] A second aspect of the present invention provides a method for acquiring and analyzing 5G full-mode cellular network signals, employing the above-mentioned apparatus, comprising:

[0023] The single-RF baseband chip can scan frequencies and receive signals under all 2G, 3G, 4G, and 5G standards to obtain base station cell information;

[0024] When there is no card, a virtual IMSI is used; when there is a card, the physical IMSI is read to complete the access process.

[0025] On the air interface side, parse the plmn-IdentityList in SIB1, and mark the co-construction and sharing if multiple operator PLMNs exist.

[0026] After sending the Initial UE Message and TAU Request, if an RRC ConnectionReject with a code is received, the abnormal base station is marked.

[0027] The primary neighbor cell information, co-construction and sharing markers, and abnormal base station markers are output via USB or Ethernet.

[0028] The beneficial effects of this invention are as follows: This invention overcomes the shortcomings of existing base station cell wireless signal detection equipment, which lacks 5G base station cell analysis capabilities and addresses the performance differences in service data between SIM-enabled and SIM-free modes. It solves the problems of 5G full-standard cellular network base station cell wireless signal detection, mobile terminal stationary base station cell trajectory analysis, acquisition of full information on primary and neighboring cells, automatic identification of abnormal base stations, and identification of co-constructed and shared base stations. Combined with current wireless communication technologies, this invention can achieve functions such as full 5G full-standard cellular network base station cell detection information, mobile terminal stationary base station trajectory analysis and simulation, full information analysis of base station cell distribution, abnormal base station identification, and co-constructed and shared base station identification.

[0029] Specifically, it can be divided into the following aspects:

[0030] 1. The solution adopts the SM4350 integrated 5G RF baseband chip to realize the air interface signaling parsing of cellular network wireless signals such as China Mobile 5G, China Unicom 5G, China Telecom 5G, and China Broadcasting Network 5G in both SIM card and SIM card-free modes. This includes, but is not limited to, NR-TAC, NR-CI, NR-PCI, SSB-arfcn, SS-RSRP, SS-SINR, NR-BAND, Priority, sub-Priority, and PLMN.

[0031] 2. It can solve the original ESIM card issue, as well as the compatibility issues of having both card and cardless ESIM cards.

[0032] 3. It can automatically identify abnormal base stations through analysis. Attached Figure Description

[0033] Figure 1 This is a module unit diagram of an embodiment of this application;

[0034] Figure 2 This is a flowchart illustrating the method for automatically adapting to card / no-card functionality in an embodiment of this application.

[0035] Figure 3 This is a flowchart illustrating a method for obtaining base station cell information under a 5G network standard, as described in this application.

[0036] Figure 4 This is a flowchart of a method for automatically identifying abnormal base stations according to an embodiment of this application;

[0037] Figure 5 This is a flowchart illustrating the method for identifying co-built and shared base stations in an embodiment of this application. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] This application involves the collection of 5G full-standard cellular network signals from mobile 2G, mobile 4G, mobile 5G, China Unicom 3G, China Unicom 4G, China Unicom 5G, China Telecom 4G, China Telecom 5G, China Broadcasting Network 4G, and China Broadcasting Network 5G. It systematically analyzes base station cell information (including but not limited to main cell, neighboring cell, and base station air interface configuration information), and is compatible with both SIM-enabled and SIM-free modes to achieve rapid collection of main and neighboring cells under all standards. It automatically identifies SIM-enabled and SIM-free modes, obtains full information on main and neighboring cells for 2G, 3G, 4G, and 5G full-standards, and automatically identifies and marks abnormal base stations in SIM-enabled mode. It also identifies co-constructed and shared base stations based on air interface signaling.

[0040] like Figure 1 As shown, this application employs an integrated design of SM4350 and MSM9X07 RF baseband chips for cellular network signal acquisition for China Mobile, China Unicom, China Telecom, and China Broadcasting Network, respectively. Specifically:

[0041] The China Mobile 5G SM4350 unit is used for acquiring main and neighbor cell information of 5G standard mobile 5G base stations; the China Unicom 5G SM4350 unit is used for acquiring main and neighbor cell information of 5G standard China Unicom 5G base stations; the China Telecom 5G SM4350 unit is used for acquiring main and neighbor cell information of 5G standard China Telecom 5G base stations; and the China Broadcasting Network 5G... The SM4350 unit is used for acquiring primary and neighboring cell information of 5G broadcast 5G base stations; the China Mobile MSM9X07 unit is used for acquiring primary and neighboring cell information of LTE mobile 4G base stations; the China Unicom MSM9X07 unit is used for acquiring primary and neighboring cell information of LTE Unicom 4G base stations; the China Telecom MSM9X07 unit is used for acquiring primary and neighboring cell information of LTE Telecom 4G base stations; the China Broadcasting Network MSM9X07 unit is used for acquiring primary and neighboring cell information of LTE broadcast 4G base stations; the China Unicom MSM9X07 unit is used for acquiring primary and neighboring cell information of WCDMA Unicom 3G base stations; and the China Mobile MSM9X07 unit is used for acquiring primary and neighboring cell information of GSM mobile 2G base stations.

[0042] The MT6765 is the main control CPU, used for information acquisition, interaction, and control of various RF units. It runs Android 11 and provides an app based on an LCD human-machine interface. It also supports the CH348L USB-to-virtual serial port driver based on the USB bus to meet the communication needs of up to eight UART peripherals, and the WK2124 SPI-to-virtual serial port driver based on the SPI bus to meet the communication needs of three 5G unit UART peripherals. The DM9051 based on the SPI bus provides an RJ45 Ethernet interface for the system, enabling this application to support wired network transmission in addition to the wireless transmission capabilities integrated into the MT6765, such as Wi-Fi, Bluetooth, and 4G networks.

[0043] Furthermore, in a preferred embodiment, chip-level integration technology is employed. The RF units for China Mobile 2G, China Mobile 4G, China Unicom 3G, China Unicom 4G, China Telecom 4G, and China Broadcasting 4G all use an LTE baseband processing chip based on the MSM9X07 modem, which is backward compatible with 3G and 2G. They communicate and transmit data with the ARM main control MT6765 through a UART gateway based on a USB interface. The RF units for China Mobile 5G, China Unicom 5G, China Telecom 5G, and China Broadcasting 5G all use a 5G baseband processing chip based on the SM4350 modem, which communicates and transmits data with the ARM main control MT6765 through a UART gateway based on an SPI interface. The ARM main control MT6765 is responsible for interacting with each RF unit and collecting and summarizing data. All data can be transmitted to the Android system management terminal via an RJ45 wired network or a wireless network. The aforementioned RF units cover all base station cell standards of the entire 2G, 3G, 4G, and 5G network, thereby realizing the collection of information from primary and secondary cells across the entire network.

[0044] Furthermore, after initializing the operator and network standard, the 5G baseband RF unit based on SM4350 enters the frequency scanning and reception / parsing state. It searches for specific frequency points according to specific standards, attempts to detect PSS / SSS, obtain downlink clock synchronization, and acquire the cell's PCI. If detection fails, it searches for the next frequency point; otherwise, it continues with subsequent steps. It attempts to read the MIB to obtain SSB beam information, system frame number, and time-frequency domain information of broadcast SIB1, thereby parsing and reconstructing visualized base station cell information. To adapt to different service scenarios, it is compatible with intelligent judgment of SIM-less / SIM-enabled devices. Furthermore, combining the interaction principles between the terminal and the base station with the relevant judgment standards for R criteria and S criteria in the 3GPP protocol, the corresponding application logic is adopted, and its performance and functionality remain unaffected.

[0045] The automatic identification of SIM-enabled and SIM-less modes in this application is as follows: While the existing ESIM method solved the SIM card application problem in actual business, SIM card management and renewal during promotion remained challenges, and hardware redundancy increased the complexity of the entire solution. The original SIM-less radio frequency unit's processing algorithm could not flexibly adapt to different operators, only performing searches and analyses within a predetermined frequency. This application, through software algorithm upgrades, completely overcomes the challenges of SIM-enabled and SIM-less modes. Simultaneously, it supports free switching between 2G, 3G, 4G, and 5G network standards in terms of radio frequency and protocol, thereby enabling automatic identification of SIM-enabled and SIM-less modes for any radio frequency unit, allowing it to operate in the corresponding mode without difference in the base station cell information acquired in both modes.

[0046] In one embodiment, such as Figure 2 As shown, 2G, 3G, 4G, and 5G have all been fully adapted to the capability of cardless data collection, thus solving the limitations and management problems of physical SIM card issuance. The specific process of automatic card / cardless adaptation in this embodiment is as follows:

[0047] After the system starts, each module unit begins initialization. After the 2G, 3G, 4G, and 5G modules initialize at the physical layer and load the protocol stack, they initialize the UIM based on the ISO7816 protocol to obtain the SIM status. If there is no card, it returns failure. If there is a card but the card is invalid or has a mistake, it still returns failure. Only when there is a card and the card information is successfully obtained is the SIM card valid. This logic can accommodate the situation where there is a card but the card is incorrect or invalid. Under any circumstances, the process can continue to execute.

[0048] When the physical layer logic fails to obtain the SIM card, it will switch to waiting for the operator configuration instructions. The configuration instructions include configuring the network standard (2G, 3G, 4G, 5G) and configuring the operator. After the configuration is completed, the IMSI information of a virtual SIM card will be automatically generated. This information is the core parameter for judging abnormal base stations. Then, the base station cell search will be performed and the parsing process will begin.

[0049] When the physical layer logic obtains a valid SIM, it will acquire all the information within the SIM, including but not limited to the operator and IMSI. At this time, it will read the network standard (2G, 3G, 4G, 5G) configuration parameters of the module unit to set the network standard, and then start performing base station cell search and enter the parsing process.

[0050] In one embodiment, such as Figure 3 As shown, this invention uses the integrated baseband IC SM4350 to acquire 5G base station cell information for mobile, China Unicom, China Telecom, and broadcasting companies. The specific process is as follows:

[0051] After power-on, the SM4350 initializes and loads the configuration based on the physical layer protocol stack. The module unit automatically identifies whether a SIM card is present or absent and enters the corresponding mode for initialization. Then, it searches for base station cells. After matching the found cell information with the PLMN, it measures the frequency point and parses the MIB message. The 5G NR MIB message is different from the 4G LTE MIB message. The MIB message is broadcast periodically on the PBCH (Physical Broadcast Channel) at 80ms intervals. It contains the necessary parameters for demodulating SIB1 and carries basic information such as the System Frame Number (SFN), downlink bandwidth information, and HICH configuration information. The MIB must be received and decoded before the Physical Downlink Control Channel (PDSCH) can be decoded to obtain the full information of the base station cell, such as TAC, NCI, gCellID, NR_PCI, NR_SSBarfcn, NR_RSRP, NR_SINR, and NR_BAND. Simultaneously, the physical layer automatically measures the co-frequency and inter-frequency points carried in the SIB message according to the protocol stack flow, searches for neighboring cells, and resolves their MIBs and SIBs. All resolved cells are reported to the master control unit described in the MT6765 for storage. When the master control unit issues a control command to lock a base station cell, the physical layer of the module unit will perform the operation of locking the cell's frequency point and physical cell ID, continuously measuring the cell's frequency point, and uploading the results to the upper-layer application as needed for judgment. When the measured data does not need to be reported temporarily, it is written into the cache for later retrieval.

[0052] Currently, public security departments deploy a number of police simulation stations in key locations for routine data collection. To minimize interference with normal communications, these simulation stations are typically included in the mobile terminal selection list by network operators during network planning. However, these simulation stations do not handle user services; they only serve to collect terminal identities. When a SIM card is inserted into any radio frequency unit, that unit will detect anomalies in the signaling of the base station to determine if it is a simulation station. This abnormal base station is then marked in the data for subsequent analysis and processing of the collected base station information. This method overcomes the limitations of traditional methods using C1 and C2 values ​​to effectively identify fake GSM base station parameters that forge operator base station parameters, and it can also effectively identify 4G and 5G simulation stations.

[0053] In one embodiment, such as Figure 4 As shown, the automatic identification of abnormal base stations follows this process:

[0054] Based on the communication standard and operator of the current RF module, independent base station identification is performed. When the PLMN carried in the searched base station cell information contains the PLMN set by the current module unit, the module will send an RRCConnection Request to it, wait for the base station to respond with an RRCConnection Setup message, and the test module unit will send an Initial UE Message to the base station side with the virtual IMSI (cardless mode) or the IMSI in the physical card (card mode) and other necessary information, while simultaneously sending a TrackingArea Update Request. If the current base station cell is a non-service base station (such as a 2G / 3G / 4G / 5G simulated base station), a Reject message will be immediately returned with a rejection code. At this point, it can be determined whether to lock onto the cell to determine its location based on the application-side service needs. Otherwise, the frequency point measurement of surrounding base stations will continue, and the cell information will be parsed.

[0055] In this application, the specific method for identifying co-constructed and shared base stations based on air interface signaling is as follows:

[0056] Starting with LTE Release 10 in the 4G network era, plmn-IdentityList was introduced. This version corresponds to TS 36.304 in the 3GPP specification and is mainly used in cell selection and reselection processes. It provides the UE terminal with parameters such as the PLMN list and RAT priority through broadcast system information (such as SIB1). This parameter, as an important parameter for base station co-construction and sharing, can carry multiple different PLMNs simultaneously to inform terminals from different operators that they are using the base station. For example, if a 4G / 5G base station broadcasts 46000 and 46015 in this parameter, it means that the base station simultaneously supports user access from China Mobile and China Broadcasting Network; if it broadcasts 46001 and 46011, it means that the base station simultaneously supports user access from China Unicom and China Telecom. Therefore, when parsing SIB1 signaling on the air interface, it is possible to distinguish whether a base station is co-constructed and shared. When analyzing base station data, co-constructed and shared base stations need to be treated equally.

[0057] In one embodiment, such as Figure 5 As shown, the specific process for identifying co-built and shared base stations is as follows:

[0058] Due to adjustments in operator deployments, some 4G and 5G base stations are now shared, such as China Mobile and China Broadcasting Network sharing 4G and 5G base stations, and China Unicom and China Telecom sharing 4G and 5G base stations. Specifically, this manifests as the broadcasting of multiple operators' PLMN numbers during base station identity broadcasting, and the terminal uses the PLMN to determine whether the base station can be accessed. Therefore, in this embodiment, after MIB message synchronization, the cellAccessRelatedInfo message in SIB1 is parsed to obtain the parameter values ​​in plmn_IdentityList. If the PLMN value carried is more than one and belongs to different operators, then the cell is determined to be a shared cell. This provides multi-dimensional technical support for subsequent data analysis.

[0059] In summary, this invention uses independent baseband ICs as data acquisition units for 2G, 3G, 4G, and 5G, resolving the incompatibility issue between SIM-enabled and SIM-less devices. Furthermore, since the 4G baseband IC MSM9X07 is backward compatible with 2G and 3G, all MSM9X07 units can flexibly switch between 2G, 3G, and 4G. In the future, when China Mobile's 2G and China Unicom's 3G networks are decommissioned, they can be upgraded via software to be used as 4G, providing a more flexible processing method. The SM4350 used in 5G can also be backward compatible with 4G, 3G, and 2G standards through future software upgrades. The single-module design, compatible with both SIM-enabled and SIM-less modes, solves the complexity of coordinating the main and auxiliary units for each standard, resulting in higher integration, lower power consumption, and improved battery life. It also addresses the limitations of traditional modules at the physical layer, providing capabilities such as SIM-less base station search, SIM-less cell locking, shared base station identification, and abnormal base station identification and location.

[0060] The above embodiments only illustrate preferred embodiments of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, such as combining different features in various embodiments, and these all fall within the protection scope of the present invention.

Claims

1. A 5G full-mode cellular network signal acquisition and analysis device, characterized in that Comprise: Multi-mode radio frequency baseband chip for receiving 2G / 3G / 4G / 5G air interface signal; Dual-mode module without card / with card, injects virtual IMSI to protocol stack when SIM card is missing to continue access process; Signaling analysis module, extracts plmn-IdentityList from SIB1 and marks the cell as co-construction and sharing when multiple operator PLMN appears, and marks the cell as abnormal when RRCConnection Reject message carrying rejection code is received after sending Initial UE Message; Output interface, for sending marked base station information to the outside.

2. The apparatus of claim 1, wherein, The multi-mode radio frequency baseband chip scans and receives mobile 5G, unicom 5G, telecom 5G and radio and television 5G and analyzes MIB, realizing 5G full mode base station cell wireless signal detection.

3. The apparatus of claim 2, wherein, The multi-mode radio frequency baseband chip is SM4350, which is used to complete the scanning, MIB reading and PCI acquisition of 5G base station cell information in a single radio unit, realizing 5G base station air interface acquisition.

4. The apparatus of claim 1, wherein, The dual-mode module without card / with card realizes automatic identification and switching of card mode and cardless mode by configuring operator instructions in a single radio unit, so that the same radio unit is compatible with two modes.

5. The apparatus of any one of claims 1 to 4, wherein, The signaling analysis module obtains the current cell and adjacent cell information of the terminal through the RRC connection process in card mode, forming the trajectory record of the mobile terminal residing in the base station cell.

6. The apparatus of claim 2, wherein, The signaling analysis module collects and outputs the PCI, frequency point and RSRP information of the main cell and adjacent cell under 2G, 3G, 4G and 5G full mode, realizing main and adjacent cell full information acquisition.

7. The apparatus of claim 1, wherein, The signaling analysis module automatically identifies the cell as an abnormal base station and marks it if RRC Connection Reject carrying rejection reason value is received after sending Initial UE Message and Tracking Area Update Request.

8. The apparatus of claim 1, wherein, The signaling analysis circuit analyzes plmn-IdentityList in SIB1 through air interface side, and identifies the base station as a co-construction and sharing base station and marks it when the list carries multiple different operator PLMNs.

9. The apparatus of any one of claims 6-8, wherein, The output interface includes USB virtual serial port driver CH348L for providing up to 8 UART peripheral communication, and DM9051 SPI bus for providing RJ45 Ethernet interface. 10.A method for 5G full-mode cellular network signal collection and analysis, using the device of any one of claims 1-9, characterized in that, Comprise: Single radio frequency baseband chip scans and receives in 2G, 3G, 4G and 5G full mode, and acquires base station cell information; Virtual IMSI when there is no card, read real IMSI when there is card, complete access process; Air interface side analyzes plmn-IdentityList in SIB1, and marks co-construction and sharing if multiple operator PLMNs exist; After sending Initial UE Message and TAU Request, if RRC Connection Reject carrying code is received, mark abnormal base station; Output main and adjacent cell information, co-construction and sharing mark and abnormal base station mark through USB or Ethernet.

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