WO2020113519A1

WO2020113519A1 - Method and apparatus for identifying pseudo base station, mobile terminal and storage medium

Info

Publication number: WO2020113519A1
Application number: PCT/CN2018/119579
Authority: WO
Inventors: 李伟清; 张涛
Original assignee: 深圳市欢太科技有限公司; Oppo广东移动通信有限公司
Priority date: 2018-12-06
Filing date: 2018-12-06
Publication date: 2020-06-11
Also published as: CN112806044A; CN112806044B

Abstract

The present application discloses a method and an apparatus for identifying a pseudo base station, a mobile terminal and a storage medium. The method for identifying a pseudo base station is applied to a mobile terminal. The method comprises: when redirection from a cell of a first base station to a cell of a second base station is required, determining whether the cell of the first base station has been successfully registered; if the cell of the first base station has not been successfully registered, initiating tracking area update to the cell of the first base station; and if the tracking area update fails, identifying the first base station as a pseudo base station. The method is able to accurately identify a pseudo base station.

Description

Pseudo base station identification method, device, mobile terminal and storage medium

Technical field

The present application relates to the technical field of mobile terminals, and more particularly, to a pseudo base station identification method, device, mobile terminal, and storage medium.

Background technique

Mobile terminals, such as mobile phones and tablet computers, have become one of the most commonly used consumer electronic products in people’s daily lives. People are more and more accustomed to performing various life-related operations through mobile terminals. Mobile terminals usually require operators The base station communicates. In some prosperous commercial areas, fake base stations disguised as operator base stations are often set up, because these fake base stations often impersonate other people’s mobile phone numbers and forcefully send spam messages such as fraud and advertising to the terminal, so in order to protect the data security of the terminal It is necessary to identify these pseudo base stations that cause trouble to people's lives.

Summary of the invention

In view of the above problems, the present application proposes a pseudo base station identification method, device, mobile terminal, and storage medium to solve the above problems.

In the first aspect, an embodiment of the present application provides a method for identifying a pseudo base station, which is applied to a mobile terminal. The method includes: when it is necessary to redirect the cell of the first base station to the cell of the second base station, determine whether the registration is successful The cell of the first base station; if the cell of the first base station has not been successfully registered, initiate a tracking area update to the cell of the first base station; if the update of the tracking area fails, identify the first base station as Pseudo base station.

In a second aspect, an embodiment of the present application provides a device for identifying a pseudo base station, which is applied to a mobile terminal. The device includes: a cell judgment module, a tracking area tracking new module, and a determination module. When the cell of the base station is redirected to the cell of the second base station, it is determined whether the cell of the first base station has been successfully registered; if the cell of the first base station has not been successfully registered, the cell of the first base station Initiating a tracking area update; if the tracking area update fails, identifying the first base station as a pseudo base station.

In a third aspect, an embodiment of the present application provides a mobile terminal, including: one or more processors; a memory; one or more application programs, wherein the one or more application programs are stored in the memory and Is configured to be executed by the one or more processors, and the one or more programs are configured to perform the method for identifying a pseudo base station provided in the first aspect described above.

According to a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a program code, and the program code can be called by a processor to execute the pseudo provided by the first aspect Base station identification method.

The solution provided in this application determines whether the cell of the first base station has been successfully registered when the cell of the first base station needs to be redirected to the cell of the second base station. The cell of a base station initiates the tracking area update. If the tracking area update fails, the first base station can be identified as a pseudo base station, so that the pseudo base station can be accurately identified, and the pseudo base station can avoid trouble for users.

BRIEF DESCRIPTION

In order to more clearly explain the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, without paying any creative work, other drawings can be obtained based on these drawings.

FIG. 1 shows a schematic diagram of a system architecture of a mobile communication network provided by an embodiment of the present application.

FIG. 2 shows a schematic diagram of a system architecture of another mobile communication network provided by an embodiment of the present application.

FIG. 3 shows a flowchart of a method for identifying a pseudo base station according to an embodiment of the present application.

FIG. 4 shows a flowchart of a method for identifying a pseudo base station according to another embodiment of the present application.

FIG. 5 shows a flowchart of step S210 in the method for identifying a pseudo base station according to an embodiment of the present application.

FIG. 6 shows a flowchart of step S240 in the method for identifying a pseudo base station according to an embodiment of the present application.

7 shows a flowchart of a method for identifying a pseudo base station according to yet another embodiment of the present application.

FIG. 8 shows a block diagram of a pseudo base station identification device according to an embodiment of the present application.

9 shows a block diagram of cell judgment in a pseudo base station identification device according to an embodiment of the present application.

10 is a block diagram of a mobile terminal for performing a method for identifying a pseudo base station according to an embodiment of the present application.

FIG. 11 is a storage unit for storing or carrying a program code for implementing a method for identifying a pseudo base station according to an embodiment of the present application.

detailed description

In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the drawings in the embodiments of the present application.

With the rapid development of mobile communication technology, mobile communication has experienced the development of multiple versions such as 2G, 3G and 4G. Whether it is the GSM (Global System for Mobile Communication) mobile communication system or the CDMA (Code Division Multiple Access) communication system in the early 2G era, or the LTE (long term evolution) system architecture in the later 4G era, the base station is A more important communication device.

For example, a schematic diagram of the architecture of the 2G mobile communication system shown in FIG. 1. The base station BTS (base transceiver) is used as the access device of the mobile communication channel to connect with the BSC (Base Station Controller), and then the BSC is connected with the MSC (mobile switching center). Another example is the schematic diagram of the 4G mobile communication system architecture shown in FIG. 2. The base station eNB (evolved node B) is connected to the MME (Mobility Management Entity), and the MME is connected to the serving gateway Serving Gateway. It can be seen from FIGS. 1 and 2 that in the mobile communication system, the base station, as a device that directly establishes a connection with the mobile terminal, has a relatively important position in the entire system architecture. A base station generally refers to a "public mobile communication base station", and its role is mainly used to provide signals to mobile terminals such as mobile phones and tablet computers. Base station facilities are not only in the hands of major operators and equipment manufacturers, they can often be seen in major universities, research institutes, and scientific research institutions, which accelerates the frequency of communication technology updates and shortens the commercial development. The transition time, therefore, and with the development of communication technology, the inventor discovered that a pseudo base station appeared.

The fake base station uses the signal strength, location area, system message and other parameters to fake the mobile communication network of the existing network to trick the user to access within its coverage area to obtain the user's IMSI (International Mobile Subscriber Identification Number). , IMEI (International Mobile Identity, International Mobile Equipment Identity) and other information. The criminals can use the pseudo base station to collect user information, and also use the pseudo base station to maliciously send junk advertisements, fraud and other short messages or make harassing calls, which seriously affects the normal communication of users.

At present, low-standard mobile communication technologies, such as 2G (2-Generation wireless telephone technology) and 3G (3rd-Generation third-generation mobile communication technology), etc., do network authentication and protection. The poor results in criminals often carrying out illegal activities through 2G pseudo base stations and 3G pseudo base stations, especially using 2G pseudo base stations to maliciously send junk advertisements, fraud and other short messages. The high-standard communication technology may specifically be an LTE network standard, such as 4G (the 4th Generation, mobile communication technology), 4G+, and 5G (5th-Generation, fifth generation mobile communication technology), etc. The authentication and protection of the network are better. Therefore, the mobile terminal may fail to register the cell of the pseudo base station of the high-standard mobile communication technology. Therefore, it is generally considered to be safe under the high-standard communication network. Therefore, the low-standard mobile communication technology has a relatively low security level compared with the high-standard mobile communication technology, and it is easier for criminals to use the pseudo-base station of the low-standard mobile communication network to realize their illegal activities.

After a long-term research, the inventor found that many pseudo base stations of high-standard mobile communication networks are redirected to the pseudo base stations of low-standard mobile communication networks during the authentication registration process to achieve illegal activities. Based on the above problems, the inventor proposes a pseudo base station identification method, device, mobile terminal, and storage medium provided by embodiments of the present application. When the cell of the first base station needs to be redirected to the cell of the second base station when it is needed, the registration is not successful When passing the cell of the first base station, the tracking area update is initiated to the cell of the first base station. If the tracking area update fails, the first base station is identified as a pseudo base station, thereby achieving accurate identification of the pseudo base station.

The method for identifying the pseudo base station according to the embodiment of the present application will be described in detail below.

Referring to FIG. 3, an embodiment of the present application provides a method for identifying a pseudo base station, which can be applied to a mobile terminal. The method for identifying a pseudo base station may include:

Step S110: When it is necessary to redirect the cell of the first base station to the cell of the second base station, determine whether the cell of the first base station has been successfully registered.

In the embodiment of the present application, since most of the pseudo base stations need to direct the mobile terminal to the pseudo base station of the low-standard mobile communication technology, the low-standard mobile communication technology may be 2G or 3G, so as to achieve illegal behavior. Therefore, it is possible to detect the cell redirection of the base station during the use of the mobile terminal to determine the situation where cell redirection is required, and to perform further confirmation when the cell is redirected to determine the cell of the pseudo base station Redirect. Among them, the cell refers to the area covered by the base station in the mobile communication system, and the mobile terminal can reliably communicate with the base station through the wireless channel in the cell.

When the cell currently accessed by the mobile terminal is the cell of the first base station, the first base station may establish an RRC (Radio Resource Control, unlimited resource control) connection with the mobile terminal. Among them, the control plane between UE (User Equipment) and eNodeB (Evolved Node-B) includes the first layer, the second layer, and the third layer. The first layer is the physical layer, and the second layer is the media access control layer. The third The layer is RRC. RRC is used to handle layer 3 information of the control plane between UE (User Equipment) and eNodeB (Evolved Node-B), RRC allocates wireless resources and sends related signaling, UE and UTRAN (Evolved Universal Terrestrial Radio Access Access Network) The main part of the inter-control signaling is the RRC message. The RRC message carries all the parameters needed to establish, modify, and release the media access control layer and physical layer protocol entities. It also carries some NAS (non-access layer) messages. make.

Among them, RRC processes the layer 3 information of the control plane between the terminal and the base station, RRC allocates radio resources and sends related signaling. The RRC connection establishment process between the first base station and the mobile terminal includes several steps of reselection of available cells, access admission control, and establishment of a layer 2 signal link.

In some embodiments, the cell of the first base station may issue a redirection instruction to the mobile terminal, and when receiving the redirection command issued by the cell of the first base station, the mobile terminal may determine that the cell of the first base station needs to be performed. Redirect to the cell of the second base station, and the second base station is the target base station to which to redirect. The cell of the first base station may issue the redirection instruction through the above-mentioned RRC connection. Of course, the mobile terminal needs to be redirected from the cell of the first base station to the cell of the second base station, or when the location of the mobile terminal changes, or due to fluctuations in the wireless environment (ie, changes in signal strength and interference level), The actively executed redirection cell.

When the mobile terminal is accessing the cell of the pseudo base station, the cell of the pseudo base station is often redirected to the cell of the more dangerous pseudo base station without successful registration to achieve its illegal behavior. That is to say, after the mobile terminal accesses the cell of the pseudo base station of 4G or higher, the cell of the pseudo base station usually redirects the mobile terminal to the more dangerous pseudo mobile of the low standard mobile communication network within the time of using the registered cell Base station cells, such as 2G or 3G pseudo base station cells. Therefore, in the embodiment of the present application, when the mobile terminal determines that the cell of the first base station needs to be redirected to the cell of the second base station, it may be determined whether the cell of the first base station has been successfully registered to determine the current redirection It may be a redirection by a pseudo base station.

When the cell of the base station is registered, an initial access process needs to be performed, for example, the above-mentioned RRC connection. After the initial access process, the attach process is required. The attachment process is a necessary process in the registration process. Only after the attachment is successful can subsequent services be performed. During the attaching process, mutual authentication of the mobile terminal and the network is required, and the mobile terminal and the MM (Mobility Management Entity) establish an MM (mobile management) context. The MME establishes a default bearer for the mobile terminal, and the mobile terminal obtains the IP address assigned by the network side. User location registration and temporary identification (S-TMSI) allocation are also required.

In the embodiment of the present application, to determine whether the cell of the first base station has been successfully registered, whether the result returned by the registration is received, for example, if a result indicating successful registration is received, it may be determined that the cell of the first base station has been successfully registered If no result indicating successful registration is received, it may be determined that the cell of the first base station has not been successfully registered. It can also be determined by judging the result of the above attachment process, for example, by judging whether the authentication is successful, if the authentication is successful, it is determined that the cell of the first base station is successfully registered, and if the authentication is not successful, it is determined that the registration is not successful The cell of the first base station. It can also be judged whether an IP address is currently assigned. If an IP address is currently assigned, it indicates that the cell has been successfully registered, and if an IP address is not currently assigned, it indicates that the cell has not been successfully registered. Of course, the specific way to determine whether the cell of the first base station has been successfully registered may not be limited in the embodiments of the present application.

Step S120: If the cell of the first base station has not been successfully registered, a tracking area update is initiated to the cell of the first base station.

In the embodiment of the present application, when the cell of the first base station needs to be redirected to the cell of the second base station, and it is determined that the cell of the first base station has not been successfully registered, it indicates the current redirection, which may be a pseudo base station The cell is deliberately redirected to a more dangerous low-standard mobile communication base station cell when the registration is unsuccessful, for example, the 4G pseudo base station cell is redirected to the cell of the 2G base station or the cell of the 3G base station when the registration is not successful. Of course, the current redirection may also be normal redirection, such as the redirection that occurs when the mobile terminal has just been turned on and the current base station signal is poor. Therefore, the first base station is a suspected pseudo base station, and the first base station may be further detected to determine whether the first base station is a pseudo base station.

Since the cell location area code (TAC) of the pseudo base station will be deliberately set to the same TAC as the operator's base station, the mobile terminal will not initiate a tracking area update (TAU). Among them, the tracking area update in Long Term Evolution (LTE) refers to that when a mobile terminal moves from a cell location area (TA) to another TA, it must relocate on the new TA Register to notify the network to change the location information of the mobile terminal he stored. For example, when the mobile terminal detects a new cell and finds that the TAC of the cell is different from the TAC of the current cell, it initiates TAU. In order to determine the location of the mobile terminal, the coverage area of the LTE network will be divided into multiple TAs. The function of the TA is similar to that of the 3G location area and routing area. It is the basic unit of location update and paging in the LTE system. TA is identified by TAC. A TA may contain one or more cells, and TAC is broadcast in SIB1 of these cells. TAI is used as the unique identifier of TA during network operation.

During the TAU, security verification processes such as authentication and integrity protection are performed. If the pseudo base station performs TAU, the TAU update fails because it cannot pass the security verification process described above. Therefore, when it is determined that the cell of the first base station has not been successfully registered, a tracking area update can be initiated to the cell of the first base station to determine whether the first base station is a pseudo base station.

It can be understood that when the mobile terminal accesses the pseudo base station of the LTE network, because it cannot successfully register the pseudo base station cell, it will quickly redirect to the more dangerous pseudo base station cell without successfully registering the pseudo base station cell . In addition, since the TAC of the pseudo base station coincides with the TAC of the operator, TAU will not be performed. Therefore, the mobile terminal may perform TAU to determine whether the first base station is false when it is determined that the cell of the first base station needs to be redirected to the cell of the second base station and the cell of the first base station has not been successfully registered. Base station. When the TAU is initiated to the cell of the first base station, a TAU request may be sent to the cell of the first base station, and the TAU request is used to instruct the first base station to perform TAU related operations. When the cell of the first base station is successfully registered, it indicates that the above redirection is a normal redirection.

Step S130: If the tracking area update fails, identify the first base station as a pseudo base station.

In the embodiment of the present application, after initiating TAU to the cell of the first base station, the mobile terminal may receive the tracking area update result returned by the cell of the first base station, and when receiving the update rejection information returned by the cell of the first base station, then Indicates that the tracking area failed to update.

Further, when it is determined that the tracking area update fails, the first base station may be identified as a pseudo base station. It can be understood that when the mobile terminal accesses the pseudo base station of the LTE network, it will quickly redirect to the more dangerous pseudo base station cell without successfully registering the pseudo base station cell. Therefore, when it is determined that the cell of the first base station needs to be redirected to the cell of the second base station, the cell of the first base station has not been successfully registered, and the cell of the first base station cannot update the tracking area, so the first The base station is a pseudo base station.

The method for identifying a pseudo base station provided by the embodiment of the present application, because the pseudo base station is identified when the redirection is required, so that the pseudo base station can be identified before the pseudo base station cell is redirected to a more dangerous base station cell , To facilitate subsequent rapid decision-making and avoid user losses. And through the multiple characteristics of the pseudo base station, the pseudo base station is identified, so that the accuracy of identifying the pseudo base station is high.

Referring to FIG. 4, another embodiment of the present application provides a method for identifying a pseudo base station, which can be applied to a mobile terminal. The method for identifying a pseudo base station may include:

Step S200: When it is necessary to redirect the cell of the first base station to the cell of the second base station, determine whether the redirection is a redirection that occurs when a communication network is used for a call.

In the embodiment of the present application, when the cell currently accessed by the mobile terminal is the cell of the first base station, the first base station may establish an RRC connection with the mobile terminal. When the first base station needs to redirect the mobile terminal from the cell of the first base station to the cell of the second base station, it can transmit the redirection instruction to the mobile terminal through the RRC connection. Therefore, as an implementation manner, the mobile terminal determining that the cell of the first base station needs to be redirected to the cell of the second base station may include:

Receiving the release information sent by the cell of the first base station during the release of the radio resource control connection with the mobile terminal; when the release information carries a message indicating that the mobile terminal needs to be redirected to the second base station When indicating the cell, it is determined that the cell of the first base station needs to be redirected to the cell of the second base station.

It can be understood that, after establishing an RRC (Radio Resource Control) connection with the mobile terminal, the cell of the first base station can release the release information carrying the redirection instruction command by controlling the release of the RRC connection of the mobile terminal The instruction is used to instruct the mobile terminal to redirect from the cell of the first base station to the cell of the second base station. Correspondingly, the mobile terminal can receive the release information sent by the cell of the first base station in the process of releasing the RRC connection. When it is determined that the above-mentioned instruction instruction exists in the received release information, it can be determined that the first The cell of the base station is redirected to the cell of the second base station. Therefore, after establishing an RRC connection with the cell of the first base station, it can be determined that the cell of the first base station needs to be redirected to the second by receiving a message sent by the cell of the first base station in the process of controlling the release of the RRC connection of the mobile terminal The situation of the cell of the base station.

Further, when the mobile terminal accesses the pseudo base station of the high-standard mobile communication network, the mobile terminal needs to be redirected to the pseudo base station of the low-standard mobile communication network, where the high-standard mobile communication network may be an LTE network (such as 4G ), the low-standard mobile communication network may be 2G or 3G. Therefore, before determining whether the cell of the first base station has been successfully registered, it may also be determined whether the second base station to which the redirection needs to be is a 2G base station or a 3G base station. Therefore, the method for identifying the pseudo base station may further include:

Determine whether the second base station is a base station of the second generation mobile communication technology or the third generation mobile communication technology; if it is a base station of the second generation mobile communication technology or the third generation mobile communication technology, perform the judgment whether the registration is successful Steps through the cell of the first base station.

In the embodiment of the present application, it can be determined whether the characteristic parameters of the second base station are consistent with the characteristic parameters of the 2G base station or the 3G base station according to the characteristic parameters of the second base station, thereby determining whether the second base station is a 2G base station or a 3G base station. Among them, the characteristic parameters include location area code (LAC, location, area code), location area identification (TAI, Tracking Area, Identity), absolute video channel number (EARFCN, eutra, absolute frequency, channel number), physical unit identification (PCI, physical) cell identity), cell identity (CID, cell identity), etc. Specifically, taking the LAC as an illustration, since the operator allocated the LAC code in the early stage of network construction, a certain number of LACs were allocated in each region. The 2G network stipulates that the LAC uses BCD encoding (binary-coded decimal, Binary-Coded Decimal). The 2G LAC range is hexadecimal [0x1000-0x1999], [0x2000-0x2999], ..., [0x9000-0x9999 ]. In 3G networks, the LAC range of WCDMA and TD-SCDMA is [0xa000-0xffff]. Therefore, it can be determined whether the LAC is within the above-mentioned LAC range according to the LAC of the second base station. When the LAC of the second base station is within the above-mentioned LAC range, it can be determined that the second base station is a 2G base station or a 3G base station. Of course, the manner of specifically determining whether the second base station is a 2G base station or a 3G base station may not be limited in the embodiments of the present application.

In the embodiment of the present application, it may also be determined whether the first base station is a 4G base station, a 4G+ base station, or a 5G base station, to further determine that the above redirection is that the base station cell under the LTE network is redirected to a 2G or 3G base station cell. Similarly, it can be determined whether the first base station is a pseudo base station according to the characteristic parameters of the first base station. For example, it can be determined whether the first base station is a 4G base station according to whether the TAC of the first base station is within the TAC range of the 4G base station. Of course, the manner of specifically determining whether the first base station is a 4G base station, a 4G+ base station, or a 5G base station may not be limited in the embodiments of the present application.

Since the pseudo base station of the high-standard communication network redirects the mobile terminal to the pseudo base station of the low-standard communication network, it is not a redirection that occurs during a voice call made by the communication network. Therefore, before determining whether the cell of the first base station has been successfully registered, it can also be determined whether the above redirection is a redirection that occurs when a communication network is used for a call. The above redirection is redirection from the cell of the first base station to the second The cell of the base station.

As a way, the redirection that occurs when using the communication network to make a call may include:

Redirection during the call provided by CSFB.

Among them, because the long-term evolution (LTE, LongTerm Evolution) and 2G/3G dual-mode terminal wireless communication is a single wireless mode (Signal-radio mode), therefore, dual-mode or multi-mode with LTE and 2G/3G access capabilities The terminal, when using LTE access, cannot transmit 2G/3G circuit domain service signals. In order to enable the terminal (UE, User Equipment) to access or camp on LTE, it can conduct voice and other circuit domain (CS, Circuit Switched) services, and can perform the ongoing packet domain (PS, Packet) Switch under the LTE access of the UE ) The business is processed correctly, resulting in CSFB technology.

The CSFB process includes three stages: 1) The mobile terminal initiates a call on the LTE network, corresponding to the originator of the phone, namely the calling (MO, Mobile), or receiving a page, corresponding to the recipient of the phone, namely the called ( MT, Mobile Termination); 2) The mobile terminal falls back under the guidance of the LTE network and searches for suitable 2G/3G cells, such as GSM cell/WCDMA cell for access; 3) The UE reads the GSM cell/WCDMA cell system broadcast message and establishes Voice calls.

The CSFB needs to redirect the mobile terminal to the 2G/3G cell, and the above redirection will be performed when using the CFSB to make a call. Therefore, as an implementation manner, it may be determined whether the mobile terminal initiated a call request within the LTE coverage within the first set time before determining that the above redirection is required. If a call request is initiated, it is determined that the above redirection is a redirection during a call provided by CSFB, and if no call request is initiated, it is determined that the above redirection is not provided by CSFB. Redirection during the call. As another implementation manner, it may be determined whether the mobile terminal has received the paging request within the LTE coverage within the first set time before determining that the redirection is required. If a paging request has been received, it is determined that the above redirection is a redirection during a call provided by CSFB, and if a paging request has not been received, it is determined that the above redirection is not CSFB. Provide redirection during the call. Wherein, the above call request and paging request may be that the service request carries the CSFB indicator parameter. Of course, specifically determining whether the above redirection is a call redirection method provided by circuit domain fallback (CSFB) may not be limited in the embodiments of the present application.

As another way, the redirection that occurs when a communication network is used for a call may include:

Single wireless mode voice call continuity (SRVCC) provides redirection during calls.

Among them, SRVCC refers to the service continuity of voice calls when a single wireless mode terminal switches from a Time Division LongTerm Evolution (TD-LTE) network to UTRAN/GERAN. The SRVCC decision is made on the evolved Node B (eNB) side. When a user requests, the Mobility Management Entity (MME) will integrate its own SRVCC capability information and the UE's SRVCC capability information to obtain Synthesize the SRVCC capability information, and then notify the eNB of the information. The eNB performs handover judgment. Only when both the MME and the UE support the SRVCC capability, the eNB can initiate an SRVCC handover request for the UE.

SRVCC needs to redirect the mobile terminal to the 2G/3G cell. When using SRVCC to make a call, the above redirection will be performed. Therefore, as an implementation manner, it can be determined whether the mobile terminal initiates a call request within the first set time before determining that the above redirection needs to be performed when the EPC completes attachment and wireless bearer. If a call request is initiated, it is determined that the above redirection is a redirection during a call provided by SRVCC, and if no call request is initiated, it is determined that the above redirection is not a redirection during a call provided by SRVCC. As another implementation manner, it may be determined whether the mobile terminal has received the paging request within the first set time before determining that the above redirection needs to be performed when the EPC completes attachment and wireless bearer. If a paging request has been received, it is determined that the above redirection is a redirection during a call provided by SRVCC, and if a paging request has not been received, it is determined that the above redirection is not a redirection during a call provided by SRVCC. Wherein, the above call request and paging request may be the service request carrying the SRVCC indicator parameter. Of course, specifically determining whether the above redirection is a redirection method during a call provided by the SRVCC may not be limited in the embodiments of the present application.

Therefore, it can be determined whether the redirection is a redirection that occurs during a call using a communication network through the above method. Of course, it is determined whether the redirection is a redirection method that occurs during a call using a communication network. In this embodiment of the present application Can not be limited.

Step S210: If the redirection is not a redirection that occurs when a communication network is used for a call, determine whether the cell of the first base station has been successfully registered.

When it is determined that the cell redirected from the cell of the first base station to the cell of the second base station is not a redirection that occurs when a communication network is used for a call, it indicates that the current redirection may be a pseudo base station cell under the LTE network to 2G or 3G pseudo base station cell. At this time, it may be determined whether the cell of the first base station has been successfully registered to further determine that the current redirection may be a redirection performed by the pseudo base station. When it is determined that the redirection is a redirection that occurs when a communication network is used for a call, it indicates that the redirection is a normal redirection.

As an implementation manner, referring to FIG. 5, determining whether the cell of the first base station has been successfully registered may include:

Step S211: Acquire the record of the successfully registered cell.

It can be understood that, when determining whether the cell of the first base station has been successfully registered, the currently stored record of the successfully registered cell may be read. The record may be a stored list of successfully registered cells, and the cell list may store identity information of successfully registered cells, such as cell identification information.

Step S212: Determine whether there is a cell of the first base station in the record.

After obtaining the record of the successfully registered cell, the identity information of the cell of the first base station can be compared with the identity information of the successfully registered cell in the record to determine whether there is a first in the record The cell of the base station. That is, if the identity information of the cell of the first base station matches the identity information of any successfully registered cell in the record, it is determined that the cell of the first base station exists in the record.

Step S213: If there is a cell of the first base station, it is determined that the cell of the base station has been successfully registered; if there is no cell of the first base station, it is determined that the cell of the base station has not been successfully registered.

It can be understood that if it is determined that the cell of the first base station exists in the above record, it indicates that the cell of the first base station has been successfully registered, and therefore, the first base station is a normal base station. If it is determined that there is a cell of the first base station in the above record, it indicates that the cell of the first base station has not been successfully registered, which indicates that the above redirection may be that the pseudo base station cell under the LTE network is redirected to a 2G or 3G pseudo base station cell. Of course, the specific way to determine whether the cell of the first base station has been successfully registered may not be limited in the embodiments of the present application. If it is determined that the cell of the first base station has been successfully registered, it indicates that the above redirection is a normal redirection.

Step S220: If the cell of the first base station has not been successfully registered, the redirection operation is suspended.

When the cell of the first base station needs to be redirected to the cell of the second base station, it is determined that the redirection is a non-call redirection, and it is determined that the cell of the first base station has not been successfully registered, it indicates the current redirection , The cell of the pseudo base station under the LTE network may be deliberately redirected to a more dangerous base station cell when the registration is not successful, for example, the 4G pseudo base station cell is redirected to the cell of the 2G base station or the cell of the 3G base station when the registration is not successful .

In the embodiment of the present application, in order to ensure the safety of the user and avoid the criminals from redirecting the mobile terminal to the cell of the 2G base station or the cell of the 3G base station to realize their illegal behavior, it can be determined that the first base station has not been successfully registered In the cell, the redirection operation is suspended to avoid the loss of users.

Step S230: Initiate a tracking area update to the cell of the first base station.

Since it is determined that the above redirection may be a pseudo base station cell where the mobile terminal accesses the LTE network, the pseudo base station redirects the mobile terminal to a 2G pseudo base station cell or a 3G pseudo base station cell, so the first base station is a suspected pseudo base station. In the embodiment of the present application, the tracking area update may be initiated to the cell of the first base station to further detect the first base station to determine whether the first base station is a pseudo base station, specifically to initiate the tracking area update to the cell of the first base station Please refer to the content of the above-mentioned embodiment for the content of, which will not be repeated here.

Step S240: If the tracking area update fails, the first base station is identified as a pseudo base station.

After the tracking area update request is initiated, the tracking area update result may be determined according to the information returned by the cell of the first base station. In the embodiment of the present application, referring to FIG. 6, step S240 may include:

Step S241: Receive an update result returned by the cell of the first base station.

Step S242: When the update result includes the reason value of the update failure, it is determined that the tracking area has failed to track.

It can be understood that, after receiving the tracking area update requested by the mobile terminal, the cell of the first base station returns the update result. Correspondingly, the mobile terminal can receive the update result returned by the cell of the first base station. When the tracking area update fails, the update result delivered by the LTE network is usually a tracking area update rejection message, and the tracking area update rejection message usually carries a rejection reason value, and different rejection reason values indicate different rejection reasons. For example, a rejection reason value of #15 indicates that there is no suitable cell in the tracking area. In practical applications, the mobile terminal can parse the tracking area update rejection message to obtain the base station identification and rejection reason value. Therefore, when the received update result is a tracking area update rejection message, and the tracking area update rejection message carries a rejection reason value, it can be determined that the tracking area update failed.

During the TAU, security verification processes such as authentication and integrity protection are performed, and if the pseudo base station performs TAU, the TAU update fails because it cannot pass the security verification process described above. Therefore, when it is determined that the tracking area update fails, the first base station can be identified as a pseudo base station. Understandably, when accessing the pseudo base station of the LTE network, the mobile terminal will quickly redirect to the more dangerous 2G pseudo base station cell or 3G pseudo base station cell without successfully registering the pseudo base station cell, and the mobile terminal connects When entering a pseudo base station cell, TAU will not be performed. Therefore, when it is determined that the cell of the first base station needs to be redirected to the cell of the second base station, the redirection is a non-call redirection, the cell of the first base station has not been successfully registered, and the cell of the first base station cannot The tracking area is updated, so it can be determined that the first base station is a pseudo base station.

Step S250: Access to the cell of the first base station is prohibited.

It can be understood that, when it is determined that the first base station is a pseudo base station, in order to prevent users from being attacked by criminals, therefore, access to the cell of the first base station may be prohibited.

As an implementation manner, a method of prohibiting a mobile terminal from accessing the cell of the first base station includes the mobile terminal prohibiting detection of characteristic parameters corresponding to the first base station, where the characteristic parameters include location area identification (TAI, Tracking Area), absolute Video channel number (EARFCN, eutra absolute radio frequency), physical unit identification (PCI, physical cell identity), cell identity (CID, cell identity), etc. Of course, the characteristic parameters corresponding to the first base station can also include other, I will not repeat them here. In this embodiment, the first base station may be identified by the characteristic parameter corresponding to the first base station, and the mobile terminal is prohibited from accessing the first base station based on the identification.

In the embodiment of the present application, if the first base station is completely banned, although the possibility of the mobile terminal being attacked by the first base station can be avoided again, it also completely prohibits the mobile terminal from being monitored and tracked by the security monitoring system. Cause bad effects.

In this embodiment, after the mobile terminal is prohibited from accessing the cell of the first base station, the mobile terminal from being prohibited from accessing the cell of the first base station may be canceled under certain circumstances. Therefore, the method for identifying the pseudo base station may further include:

When the specified condition is met, the access prohibition to the cell of the first base station is canceled.

As an implementation manner, when the mobile terminal is prohibited from accessing the cell of the first base station, the duration of the mobile terminal's access to the first base station is prohibited and monitored. The monitoring method may include real-time monitoring and a predetermined interval Monitoring, or monitoring according to the time interval set by the user. Optionally, in order to improve the accuracy of the time of monitoring acquisition, real-time monitoring can be used. When it is determined that the monitoring duration exceeds the specified duration, the mobile terminal is prohibited from accessing the first base station, that is, the mobile terminal's registered network on the first base station is no longer restricted to cooperate with the report of the security monitoring system Information required. It can be understood that the above method can reduce the attack of the mobile terminal by the pseudo base station, and at the same time, the mobile terminal is not completely prohibited from accessing the pseudo base station to ensure that the mobile terminal is monitored and tracked by the security monitoring system.

Step S260: Identify the second base station as a pseudo base station.

In the embodiment of the present application, when it is determined that the first base station is a pseudo base station, it indicates that the above redirection is to quickly redirect to a more dangerous 2G pseudo base station cell or 3G pseudo base station cell when the mobile terminal accesses the pseudo base station of the LTE network . Therefore, it can be determined that the second base station is also a pseudo base station.

Step S270: Access to the cell of the second base station is prohibited.

In the embodiment of the present application, when it is determined that the second base station is a pseudo base station, to prevent users from being attacked by criminals, therefore, access to the cell of the second base station may be prohibited.

As an implementation manner, the method for prohibiting the mobile terminal from accessing the cell of the second base station includes the mobile terminal prohibiting detection of characteristic parameters corresponding to the second base station, where the characteristic parameters include location area identification (TAI, Tracking Area), absolute Video channel number (EARFCN, eutra absolute radio frequency), physical unit identifier (PCI, physical cell identity), cell identity (CID, cell identity), etc. Of course, the characteristic parameters corresponding to the second base station may also include other, I will not repeat them here. In this embodiment, the second base station may be identified by the characteristic parameter corresponding to the second base station, and the mobile terminal is prohibited from accessing the second base station based on the identification.

In this embodiment, after the mobile terminal is prohibited from accessing the cell of the second base station, the mobile terminal from being prohibited from accessing the cell of the second base station may be canceled under certain circumstances. Therefore, the method for identifying the pseudo base station may further include:

When the specified condition is satisfied, the access to the cell of the second base station is prohibited.

As an embodiment, after the mobile terminal is prohibited from accessing the cell of the second base station, the duration of the mobile terminal's access to the second base station is monitored and recorded. The monitoring method may include real-time monitoring and a predetermined interval Monitoring, or monitoring according to the time interval set by the user. Optionally, in order to improve the accuracy of the time of monitoring acquisition, real-time monitoring can be used. When it is determined that the monitoring duration exceeds the specified duration, the mobile terminal is prohibited from accessing the second base station, that is, the mobile terminal's registered network on the second base station is no longer restricted to cooperate with the report of the security monitoring system Information required. It can be understood that the above method can reduce the attack of the mobile terminal by the pseudo base station, and at the same time, the mobile terminal is not completely prohibited from accessing the pseudo base station to ensure that the mobile terminal is monitored and tracked by the security monitoring system.

Step S280: refuse to camp on the cell of the first base station, and redirect to other cells except the cell of the first base station and the cell of the second base station.

In the embodiment of the present application, when the first base station is determined, the mobile terminal can directly refuse to camp on the cell managed by the first base station. In addition, when the first base station is a pseudo base station, the second base station can also be recognized as a pseudo base station Therefore, it can be redirected to other cells except the cell of the first base station and the cell of the second base station, and the effect of preventing camping on the pseudo base station is achieved. For example, according to the cell list, it can be redirected to a cell managed by a Universal Mobile Telecommunications System (UMTS, Universal Telecommunications System) base station that is not managed by the first base station or the second base station, or a cell managed by an LTE base station. It should be noted that the execution order of step S250, step S260, and step S280 may not be limited in the embodiment of the present application.

Step S290: If the tracking area update is successful, continue the redirection operation.

In the embodiment of the present application, after the tracking area update is initiated to the cell of the first base station, if the update is successful, it indicates that the first base station can implement a security verification process such as authentication and integrity protection that can be performed by the normal base station, and it can be determined The first base station is a legal base station. Therefore, the above redirection from the cell of the first base station to the cell of the second base station is a redirection in normal use, for example, when the signal in the LTE network is poor, the redirection is to a 3G or 2G network, so the above redirection operation can be continued To meet the normal use requirements.

The method for identifying a pseudo base station provided in the embodiment of the present application, because when the redirection is needed, the redirection is judged, and whether the current cell registration is successful, in addition, the tracking area is updated, when the tracking area update fails , The current cell is determined to be a pseudo base station, so that the pseudo base station can be identified before the pseudo base station cell is redirected to a more dangerous base station cell, and the redirect operation is suspended to avoid the loss of users. And through the multiple characteristics of the pseudo base station, the pseudo base station is identified, so that the accuracy of identifying the pseudo base station is high. In addition, when the pseudo base station is also identified, by prohibiting the pseudo base station, and refusing to reside in the pseudo base station cell and redirecting to another cell, the pseudo base station can prevent the user from attacking and ensure the security of the user.

Referring to FIG. 7, yet another embodiment of the present application provides a method for identifying a pseudo base station, which can be applied to a mobile terminal. The method for identifying a pseudo base station may include:

Step S310: When it is necessary to redirect the cell of the first base station to the cell of the second base station, determine whether the redirection is a redirection that occurs when a communication network is used for a call.

Step S320: If the redirection is not a redirection that occurs when a communication network is used for a call, determine whether the cell of the first base station has been successfully registered.

In the embodiment of the present application, step S310 and step S320 can refer to the content of the previous embodiment, and details are not described herein again.

Step S330: If the cell of the first base station has not been successfully registered, cancel the redirection operation.

It should be noted that, unlike the previous embodiment, when the cell of the first base station needs to be redirected to the cell of the second base station, it is determined that the redirection is a non-call redirection, and the unsuccessful registration is determined When passing the cell of the first base station, it indicates the current redirection. The cell of the pseudo base station under the LTE network may be deliberately redirected to a more dangerous base station cell when the registration is not successful, for example, the 4G pseudo base station cell is not successfully registered , Redirect to the cell of the 2G base station or the cell of the 3G base station.

In the embodiments of the present application, in order to ensure the safety of users, it is avoided that criminals realize their illegal behavior by redirecting the mobile terminal to the cell of the 2G base station or the cell of the 3G base station. Therefore, when it is determined that the cell of the first base station has not been successfully registered, the redirection operation can be canceled, that is, the redirection operation is no longer performed, to avoid being attacked after being redirected to the cell of the 2G base station or the cell of the 3G base station And cause losses to users.

Step S340: Initiate tracking area update to the cell of the first base station.

Step S350: If the tracking area update fails, identify the first base station as a pseudo base station.

Step S360: Access to the cell of the first base station is prohibited.

Step S370: Identify the second base station as a pseudo base station.

Step S380: Access to the cell of the second base station is prohibited.

Step S390: refuse to camp on the cell of the first base station, and redirect to a cell other than the cell of the first base station and the cell of the second base station.

In the embodiment of the present application, steps S340 to S390 can refer to the content of the previous embodiment, and will not be repeated here.

The method for identifying a pseudo base station provided in the embodiment of the present application, because when the redirection is needed, the redirection is judged, and whether the current cell registration is successful, in addition, the tracking area is updated, when the tracking area update fails , The current cell is determined to be a pseudo base station, so that the pseudo base station can be identified before the pseudo base station cell is redirected to a more dangerous base station cell, and the redirection operation is canceled to avoid the loss of users. And through the multiple characteristics of the pseudo base station, the pseudo base station is identified, so that the accuracy of identifying the pseudo base station is high. In addition, when the pseudo base station is also identified, by prohibiting the pseudo base station, and refusing to reside in the pseudo base station cell and redirecting to another cell, the pseudo base station can prevent the user from attacking and ensure the security of the user.

Please refer to FIG. 8, which shows a block diagram of a device 400 for identifying a pseudo base station according to an embodiment of the present application. The device 400 for identifying a pseudo base station is applied to the above mobile terminal, and the device shown in FIG. 8 will be described below. The device 400 for identifying a pseudo base station includes a cell judgment module 410, a tracking area tracking new module 420, and a determination module 430 . Among them, the cell judgment module 410 is used to judge whether the cell of the first base station has been successfully registered when the cell of the first base station needs to be redirected to the cell of the second base station; After registering the cell of the first base station, the tracking area update is initiated to the cell of the first base station; the determining module 430 is used to identify the first base station as a pseudo base station if the tracking area update fails.

In the embodiment of the present application, the apparatus 400 for identifying a pseudo base station may further include: a redirection suspension module. The redirection suspension module is used to suspend the redirection operation if the cell of the first base station has not been successfully registered.

Further, the device 400 for identifying a pseudo base station may further include: a redirection execution module. The redirection execution module is used to continue the redirection operation if the tracking area update is successful.

In the embodiment of the present application, the apparatus 400 for identifying a pseudo base station may further include: a redirection cancellation module. The redirection cancellation module is used to cancel the redirection operation if the cell of the first base station has not been successfully registered.

In the embodiment of the present application, referring to FIG. 9, the cell judgment module 410 may include: a redirection judgment unit 411 and a cell judgment execution unit 412. The redirection judgment unit 411 is used to judge whether the redirection is a redirection that occurs when using a communication network to make a call; the cell judgment execution unit 412 is used if the redirection is not a redirection that occurs when using a communication network to make a call, Then, it is determined whether the cell of the first base station has been successfully registered.

Further, the redirection that occurs during a call using a communication network includes: redirection during a call provided by circuit domain fallback (CSFB); or during a call provided by single wireless mode voice call continuity (SRVCC) Redirect.

In the embodiment of the present application, the pseudo base station identification device 400 may further include: a release information receiving module and a redirection determination module. The release information receiving module is used to receive the release information sent by the cell of the first base station during the release of the radio resource control connection with the mobile terminal; the redirection determination module is used when the release information carries an indication When the mobile terminal needs an instruction to redirect to the cell of the second base station, it is determined that the cell of the first base station needs to be redirected to the cell of the second base station.

In the embodiment of the present application, the apparatus 400 for identifying a pseudo base station may further include: a first cell barring module. The first cell prohibition module is used to prohibit access to the cell of the first base station.

Further, the first cell prohibition module is specifically configured to prohibit detection of characteristic parameters corresponding to the first base station, where the characteristic parameters include at least one of a location area identifier, an absolute video channel number, a physical unit identifier, and a cell identifier .

In some embodiments, the pseudo base station identification device 400 may further include: a first prohibition cancellation module. The first prohibition cancellation module is used to cancel the prohibition of access to the cell of the first base station when the specified condition is met.

In the embodiment of the present application, the pseudo base station identification device 400 may further include: a base station judgment module. The base station judgment module is used to judge whether the second base station is a base station of the second generation mobile communication technology or the third generation mobile communication technology. If it is determined to be the base station of the second generation mobile communication technology or the third generation mobile communication technology, the cell determination module determines whether the cell of the first base station has been successfully registered.

In the embodiment of the present application, the pseudo base station identification device 400 may further include: a base station identification module. The base station identification module is used to identify the second base station as a pseudo base station.

Further, the device 400 for identifying a pseudo base station may further include: a second cell prohibition module. The second cell prohibition module is used to prohibit access to the cell of the second base station.

In some embodiments, the apparatus 400 for identifying a pseudo base station may further include: a second prohibition cancellation module. The second prohibition canceling module is used to cancel prohibiting access to the cell of the second base station when the specified condition is met.

In the embodiment of the present application, the apparatus 400 for identifying a pseudo base station may further include: an update result receiving module and an update determining module. The update result receiving module is used to receive the update result returned by the cell of the first base station; the update determination module is used to determine that the tracking area has failed to track when the update result includes a reason value for the update failure.

In the embodiment of the present application, the cell judgment module 410 may be specifically used to: obtain a record of successfully registered cells; determine whether the cell of the first base station exists in the record; if there is a cell of the first base station, It is determined that the cell of the base station has been successfully registered; if there is no cell of the first base station, it is determined that the cell of the base station has not been successfully registered.

In the embodiment of the present application, the pseudo base station identification device 400 may further include: a rejection module. The rejection module is used to reject the cell camped on the first base station and redirect to other cells except the cell of the first base station and the cell of the second base station.

Those skilled in the art can clearly understand that for the convenience and conciseness of the description, the specific working processes of the above-described device and module can be referred to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, the coupling between the modules may be electrical, mechanical, or other forms of coupling.

In addition, each functional module in each embodiment of the present application may be integrated into one processing module, or each module may exist alone physically, or two or more modules may be integrated into one module. The above integrated modules may be implemented in the form of hardware or software function modules.

In summary, the solution provided by this application determines whether the cell of the first base station has been successfully registered if the cell of the first base station needs to be redirected to the cell of the second base station. For the cell, the tracking area update is initiated to the cell of the first base station. If the tracking area update fails, the first base station can be identified as a pseudo base station, so that the pseudo base station can be accurately identified, and the pseudo base station can avoid trouble for users.

Please refer to FIG. 10, which shows a structural block diagram of a mobile terminal provided by an embodiment of the present application. The mobile terminal 100 may be a mobile terminal capable of running application programs such as a smart phone, a tablet computer, and an e-book. The mobile terminal 100 in this application may include one or more of the following components: a processor 110, a memory 120, and one or more application programs, where one or more application programs may be stored in the memory 120 and configured to be configured by one Executed by one or more processors 110, and one or more programs are configured to execute the method as described in the foregoing method embodiments.

The processor 110 may include one or more processing cores. The processor 110 connects various parts of the entire mobile terminal 100 using various interfaces and lines, executes or executes instructions, programs, code sets or instruction sets stored in the memory 120, and calls data stored in the memory 120 to execute Various functions and processing data of the mobile terminal 100. Alternatively, the processor 110 may adopt at least one of digital signal processing (Digital Signal Processing, DSP), field programmable gate array (Field-Programmable Gate Array, FPGA), programmable logic array (Programmable Logic Array, PLA) Various hardware forms. The processor 110 may integrate one or a combination of a central processing unit (Central Processing Unit, CPU), an image processing unit (Graphics Processing Unit, GPU), and a modem. Among them, CPU mainly deals with operating system, user interface and application program, etc.; GPU is used for rendering and rendering of display content; modem is used for handling wireless communication. It can be understood that the above-mentioned modem may not be integrated into the processor 110, and may be implemented by a communication chip alone.

The memory 120 may include random access memory (RAM) or read-only memory (Read-Only Memory). The memory 120 may be used to store instructions, programs, codes, code sets, or instruction sets. The memory 120 may include a storage program area and a storage data area, where the storage program area may store instructions for implementing an operating system and instructions for implementing at least one function (such as a touch function, a sound playback function, an image playback function, etc.) , Instructions for implementing the following method embodiments. The storage data area may also store data created by the terminal 100 in use (such as a phone book, audio and video data, and chat history data).

Please refer to FIG. 11, which shows a structural block diagram of a computer-readable storage medium provided by an embodiment of the present application. The computer readable medium 800 stores program codes, and the program codes can be called by a processor to execute the method described in the above method embodiments.

The computer-readable storage medium 800 may be an electronic memory such as flash memory, EEPROM (Electrically Erasable Programmable Read Only Memory), EPROM, hard disk, or ROM. Optionally, the computer-readable storage medium 800 includes a non-transitory computer-readable storage medium. The computer-readable storage medium 800 has a storage space for the program code 810 that performs any of the method steps described above. These program codes can be read from or written into one or more computer program products. The program code 810 may be compressed in an appropriate form, for example.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still Modifications to the technical solutions described in the foregoing embodiments, or equivalent replacements to some of the technical features; and these modifications or replacements do not drive the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

A method for identifying a pseudo base station is characterized by being applied to a mobile terminal. The method includes:

When the cell of the first base station needs to be redirected to the cell of the second base station, determine whether the cell of the first base station has been successfully registered;

If the cell of the first base station has not been successfully registered, initiate a tracking area update to the cell of the first base station;

If the tracking area update fails, the first base station is identified as a pseudo base station.
The method according to claim 1, wherein if the cell of the first base station has not been successfully registered, the method further comprises:

Suspend the redirected operation.
The method according to claim 2, wherein the method further comprises:

If the tracking area update is successful, the redirection operation is continued.
The method according to claim 1, wherein if the cell of the first base station has not been successfully registered, the method further comprises:

Cancel the redirection operation.
The method according to claim 1, wherein the judging whether the cell of the first base station has been successfully registered includes:

Judging whether the redirection is a redirection that occurs when using a communication network to make a call;

If the redirection is not a redirection that occurs when a communication network is used for a call, it is determined whether the cell of the first base station has been successfully registered.
The method according to claim 5, wherein the redirection that occurs when using the communication network for a call includes:

Redirection during a call provided by CSFB; or

Single wireless mode voice call continuity (SRVCC) provides redirection during calls.
The method according to claim 1, wherein before determining whether to successfully register the cell of the first base station when the cell of the first base station needs to be redirected to the cell of the second base station, The method also includes:

Receiving the release information sent by the cell of the first base station during the release of the radio resource control connection with the mobile terminal;

When the release information carries an instruction instruction indicating that the mobile terminal needs to be redirected to the cell of the second base station, it is determined that the cell of the first base station needs to be redirected to the cell of the second base station.
The method according to any one of claims 1-7, wherein after the if the tracking area update fails, the first base station is identified as a pseudo base station, the method further comprises:

Access to the cell of the first base station is prohibited.
The method according to claim 8, wherein the prohibiting access to the cell of the first base station comprises:

It is prohibited to detect characteristic parameters corresponding to the first base station, the characteristic parameters including at least one of a location area identifier, an absolute video channel number, a physical unit identifier, and a cell identifier.
The method according to claim 8 or 9, wherein the method further comprises:

When the specified condition is met, the access prohibition to the cell of the first base station is canceled.
The method according to any one of claims 1-7, wherein before determining whether the cell of the first base station has been successfully registered, the method further comprises:

Determine whether the second base station is a base station of the second generation mobile communication technology or the third generation mobile communication technology;

If it is the base station of the second generation mobile communication technology or the third generation mobile communication technology, the step of determining whether the cell of the first base station has been successfully registered is performed.
The method according to claim 11, wherein after the identification of the first base station as a pseudo base station if the tracking area update fails, the method further comprises:

Identify the second base station as a pseudo base station.
The method according to claim 12, wherein after the identifying the second base station as a pseudo base station, the method further comprises:

Access to the cell of the second base station is prohibited.
The method of claim 13, wherein the method further comprises:

When the specified condition is satisfied, the access to the cell of the second base station is prohibited.
The method according to any one of claims 1-7, wherein before the identifying that the first base station is a pseudo base station if the tracking area update fails, the method further includes:

Receiving the update result returned by the cell of the first base station;

When the update result includes the value of the reason for the update failure, it is determined that the tracking in the tracking area has failed.
The method according to any one of claims 1-7, wherein the determining whether the cell of the first base station has been successfully registered includes:

Obtain records of successfully registered communities;

Determine whether there is a cell of the first base station in the record;

If there is a cell of the first base station, determine that the cell of the base station has been successfully registered;

If there is no cell of the first base station, it is determined that the cell of the base station has not been successfully registered.
The method according to any one of claims 1-16, wherein the method further comprises:

Refuse to camp on the cell of the first base station, and redirect to a cell other than the cell of the first base station and the cell of the second base station.
A device for identifying a pseudo base station is characterized by being applied to a mobile terminal. The device includes: a cell judgment module, a tracking area tracking new module, and a determination module, wherein,

When it is necessary to redirect the cell of the first base station to the cell of the second base station, determine whether the cell of the first base station has been successfully registered;

If the cell of the first base station has not been successfully registered, initiate tracking area update to the cell of the first base station;

If the tracking area update fails, the first base station is identified as a pseudo base station.
A mobile terminal is characterized by comprising:

One or more processors;

Memory

One or more application programs, wherein the one or more application programs are stored in the memory and are configured to be executed by the one or more processors, the one or more programs are configured to execute as The method of any one of claims 1-17.
A computer readable storage medium, characterized in that the computer readable storage medium stores program code, and the program code can be called by a processor to execute the method according to any one of claims 1-17 .