CN116233822A - Method and system for rapidly switching carrier code numbers - Google Patents

Abstract

The invention discloses a method and a system for rapidly switching carrier code numbers, wherein the method comprises the following steps: presetting a file system of the SIM card; detecting an operator code number switching instruction in an AT instruction channel or a BIP channel, and acquiring operator code number data, wherein the operator code number data comprises an access point name, a preferred network list, an available area, an operator code number appointed type and a timer interval corresponding to the operator code number; writing the operator code number data into a file system of the SIM card; and controlling restarting of the SIM card to finish switching of the code numbers of the operators. According to the embodiment of the invention, the mobile terminal can realize rapid switching of the code number of the operator in the mode of expanding the instruction, a developer does not need to integrate or transplant software of a third party, and does not need to modify firmware of a communication module, so that introductory risks are avoided, and the safety of products is ensured.

Description

A method and system for quickly switching operator code numbers

technical field

The invention relates to the technical field of mobile terminals, in particular to a method and system for quickly switching operator code numbers.

Background technique

Due to the differences in mobile network signal coverage of different operators and the cross-border scenarios of mobile terminals (mobile phones, IoT devices, etc.), it is necessary to flexibly change operator codes. In the existing technology, the operator code number in the ordinary SIM card is fixed and cannot be replaced; the platform structure of the eSIM card is complex, and it is necessary to obtain an encryption certificate issued by the GSMA (Global System for Mobile Communications Association) or the Ministry of Industry and Information Technology. It leads to high implementation cost and long period; VSIM (Soft SIM): It is necessary to modify the firmware of the communication module, which may affect the stability of the communication module. Moreover, the adaptation workload is heavy and the implementation period is long. OTA (Over the Air) SIM based on BIP (BIP: Bearer Independent Protocol, independent bearer protocol): BIP is a standard transport layer protocol, but there is no specification definition for the specific transmission content. At present, the SIM card of BIP OTA realizes the function of updating the PROFILE by transmitting the extended APDU. However, because BIP needs the support of communication modules, it cannot work normally on some existing IoT communication chips, so the application range is relatively limited. However, theoretically, these extended APDUs can also be transmitted through the AT channel to achieve the effect of operating the SIM card. Based on SMS (Short Message Service, short message service) OTASIM: the binary data message of GSM 03.48 specification, can also establish an equivalent APDU command channel to update PROFILE. However, data SMS has compatibility issues. Some operators have closed the data SMS channel, and some modules do not support it.

On IoT devices, it is very troublesome to replace the SIM card due to the waterproof, dustproof, and drop-proof structure design of the device, or the remote location where the device is deployed. Moreover, after replacing the SIM card, it is usually necessary to modify the APN and other configurations, which is difficult to complete on IoT devices without a user interface. Therefore, in the prior art, the procedure for changing the operator code number on a mobile terminal device or an Internet of Things device is complicated, and the operation is difficult.

Therefore prior art still needs further development.

Contents of the invention

In view of the above technical problems, the embodiment of the present invention provides a method and system for quickly switching operator code numbers, which can solve the problem of complex steps and difficult operations in the prior art for changing operator code numbers on mobile terminal devices or Internet of Things devices. technical problems.

The first aspect of the embodiments of the present invention provides a method for quickly switching operator code numbers, including:

Set the file system of the SIM card in advance;

An operator code number switching instruction is detected in the AT command channel or BIP channel, and the operator code number data is obtained, wherein the operator code number data includes the access point name corresponding to the operator code number, the preferred network list, and the available area , operator code number designation type and timer interval;

Write the operator code number data into the file system of the SIM card;

Control and restart the SIM card to complete the switching of the operator code number.

Optionally, the file system of the SIM card is set in advance, including:

Allocate storage space in the file system of the SIM card in advance, and the storage space is used to store several operator code numbers;

Pre-adding an extension field to the operator code number, the extension field is used to store extended information corresponding to the operator code number;

The instruction format is extended in the SIM card in advance to generate extended instructions, and the extended instructions are used for writing, deleting, querying, switching, and reading extended information of the operator code number.

Optionally, an extension field is added to the operator code number in advance, and the extension field is used to store extended information corresponding to the operator code number, including:

An extension field is added to the operator code number in advance, and the extension field is used to store the access point name corresponding to the operator code number, the preferred network list, the available area, the specified type of the operator code number, and the timer interval.

Optionally, the operator code number switching instruction is detected in the AT command channel or BIP channel, and the operator code number data is obtained, including:

The SIM card detects the operator code number switching command on the AT command channel, and parses out the operator code number data issued by the AT channel;

Or, after the SIM card is activated, a BIP channel is established;

The IP address of the server is accessed based on the BIP channel, the operator code number switching instruction is detected, and the operator code number data issued by the server is obtained.

Optionally, the detection of the operator code number switching instruction and obtaining the operator code number data include:

Decrypt the encrypted operator number data to obtain the decrypted operator number data;

Write the decrypted operator code number data into the file system of the SIM card.

The second aspect of the embodiment of the present invention provides a system for quickly switching operator code numbers. The system includes: a memory, a processor, and a computer program stored in the memory and operable on the processor. When the computer program is executed by the processor, the following steps are implemented:

Set the file system of the SIM card in advance;

An operator code number switching instruction is detected in the AT command channel or BIP channel, and the operator code number data is obtained, wherein the operator code number data includes the access point name corresponding to the operator code number, the preferred network list, and the available area , operator code number designation type and timer interval;

Write the operator code number data into the file system of the SIM card;

Control and restart the SIM card to complete the switching of the operator code number.

Optionally, when the computer program is executed by the processor, the following steps are implemented:

Allocate storage space in the file system of the SIM card in advance, and the storage space is used to store several operator code numbers;

Pre-adding an extension field to the operator code number, the extension field is used to store extended information corresponding to the operator code number;

The instruction format is extended in the SIM card in advance to generate extended instructions, and the extended instructions are used for writing, deleting, querying, switching, and reading extended information of the operator code number.

Optionally, when the computer program is executed by the processor, the following steps are also implemented:

An extension field is added to the operator code number in advance, and the extension field is used to store the access point name corresponding to the operator code number, the preferred network list, the available area, the specified type of the operator code number, and the timer interval.

Optionally, when the computer program is executed by the processor, the following steps are also implemented:

The SIM card detects the operator code number switching command on the AT command channel, and parses out the operator code number data issued by the AT channel;

Or, after the SIM card is activated, a BIP channel is established;

The IP address of the server is accessed based on the BIP channel, the operator code number switching instruction is detected, and the operator code number data issued by the server is obtained.

The third aspect of the embodiments of the present invention provides a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are stored by a When executed by one or more processors, the one or more processors can be made to execute the above-mentioned method for quickly switching operator code numbers.

In the technical solution provided by the embodiment of the present invention, the file system of the SIM card is set in advance; the operator code number switching instruction is detected in the AT command channel or the BIP channel, and the operator code number data is obtained, wherein the operator code number The number data includes the access point name corresponding to the operator code number, the preferred network list, the available area, the designated type of the operator code number and the timer interval; write the operator code number data into the file system of the SIM card; control restart SIM card to complete the switching of the operator code number. In the embodiment of the present invention, the mobile terminal can quickly switch the operator's code number by means of extended instructions. The developer does not need to integrate or transplant third-party software, nor does it need to modify the firmware of the communication module, which avoids the risk of introduction, thereby The safety of the product is guaranteed.

Description of drawings

FIG. 1 is a schematic flow diagram of an embodiment of a method for quickly switching operator code numbers in an embodiment of the present invention;

FIG. 2 is a schematic diagram of a hardware structure of another embodiment of a system for quickly switching operator code numbers in an embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

Please refer to FIG. 1 . FIG. 1 is a schematic flowchart of an embodiment of a method for quickly switching operator code numbers in an embodiment of the present invention. As shown in Figure 1, including:

Step S100, pre-setting the file system of the SIM card;

Step S200: An operator code number switching command is detected on the AT command channel or BIP channel, and the operator code number data is obtained, wherein the operator code number data includes the name of the access point corresponding to the operator code number, and a list of preferred networks , available area, specified type of operator code number and timer interval;

Step S300, writing the operator code number data into the file system of the SIM card;

Step S400, controlling to restart the SIM card, and completing the switching of the operator code number.

During specific implementation, the technical solution of the present invention is realized by modifying COS (Chip Operating System, on-chip operating system) or APPLET in the SIM card.

The operator code number (profile) in the embodiment of the present invention is composed of a set of information. The core fields include ICCID/IMSI/KI/OPC, etc. If the code number supports calls, the MSISDN field is required, and the SMS function requires the SMSC field. OPLMN is the preferred network list, even in the multi-number SIM card, there is usually only one copy. The APN belongs to the configuration information on the side of the modem, and is not reflected in the SIM card.

In addition to code number resources, the APN is also issued at the same time, which can be used for correct configuration by the MCU. Ordinary SIM/eSIM does not store APN information, and if the MCU configures the wrong APN, it will lead to inability to access the Internet.

It is allowed to update SIM card number resource through AT command channel or BIP channel. Without the need to introduce complex software systems such as LPA, or modify the module firmware, the code number switching can be controlled through standard AT commands to avoid introduction risks. AT stands for Attention, and the AT command is an command applied to the connection and communication between the terminal device and the PC (or MCU) application.

Among them, Profile: configuration information, that is, the operator code number data, the core fields include ICCID/IMSI/KI/OPC, etc. If the code number supports calls, the MSISDN field is also required, and the SMS function requires the SMSC field.

ICCID: Integrate circuit card identity, integrated circuit card identification code. That is, the SIM card number, which is equivalent to the ID card of the mobile phone number.

IMSI: International Mobile Subscriber Identity, International Mobile Subscriber Identity.

KI: Key Identifier, authentication key. OPC: Operator Code, operator root key.

MSISDN: Mobile Subscriber Integrated Services Digital Number, mobile subscriber integrated service digital number, that is, mobile phone number. It is equivalent to the user telephone number of the fixed network and is a public number for users to dial. Because the telephone number structure of mobile subscribers in the GSM system is based on the numbering method of ISDN, it is called MSISDN, which is the international ISDN number of mobile subscribers. The encoding method of MSISDN is in accordance with CCITT's recommendation. MSISDN refers to the number that the calling user needs to dial to call a mobile user in the GSM PLMN, which is the same as the fixed network PSTN number; it is the only number that can identify a mobile user in the public telephone network switched network numbering plan.

SMSC: Short Message Service Center, short message business center.

Realize functions such as receiving, storing, forwarding and short message status reporting of short messages. The short message center should also include an operation and maintenance module and a gateway module for transferring messages with the network and selecting sending routes.

The two mobile phones cannot send short messages point-to-point directly, and must be relayed through the short message service center.

APN: Access Point Name, access point name.

The SIM card in the present invention has a plurality of updatable operator code numbers, and additionally creates a data table of extended information on the storage space in the SIM card, which is used to store OPLMN and APN corresponding to the code number, etc. no.

The MCU (or CPU) of the mobile terminal can transmit the above-mentioned extended APDU commands through standard AT command channels such as AT+CSIM or AT+CGLA, operate the SIM card to realize flexible switching of operator code numbers, and read APN and other extended information to configure the network.

The SIM card writes the code number information received into the file system and sets a new timer. Reboot the SIM card. The new code number is online.

The SIM card provided by the present invention provides capability support for terminal equipment to quickly implement flexible switching of operator code numbers and automatic network configuration without changing the hardware design of the mobile terminal and without modifying the firmware of the communication module.

Further, the file system of the SIM card is set in advance, including:

Allocate storage space in the file system of the SIM card in advance, and the storage space is used to store several operator code numbers;

Pre-adding an extension field to the operator code number, the extension field is used to store extended information corresponding to the operator code number;

The instruction format is extended in the SIM card in advance to generate extended instructions, and the extended instructions are used for writing, deleting, querying, switching, and reading extended information of the operator code number.

During specific implementation, in the prior art, a normal SIM card has only one operator code number, while an eSIM has multiple cloud business code numbers.

In the file system of the SIM card, storage space for storing multiple operator code numbers is allocated.

In the operator code number of each group of SIM cards, several fields are added to store the extended information corresponding to the code number.

By extending the APDU command format, it provides functions such as writing, deleting, querying, and switching operators' code numbers, as well as reading functions of extended information such as APN and available area. eSIM can also be written, deleted, queried, and switched by extended APDU commands through the AT command channel, but because the eSIM specification has a complex security mechanism, usually the MCU will integrate a third-party LPA (communication protocol analyzer) software implementation Operation on eSIM. But this LPA also needs to be adapted for the MCU type. And LPA will not be open source, and its security cannot be guaranteed. In contrast, the extended APDU commands in the embodiment of the present invention are clear and concise, and can be independently and quickly implemented by the MCU without relying on the LPA.

SIM card and Modem (modem) communicate through the ISO 7816 interface, and the format of the transmission command is APDU (Application Protocol Data Unit, application protocol data unit).

Taking the application scenario of the 4G module (Modem) as an example, the 4G module connects to the SIM card through the ISO 7816 interface, and exchanges data with the SIM card through the APDU protocol format.

The MCU (microprocessor) or AP (application processor) interacts with the Modem through AT commands. The MCU does not have direct access to the SIM card.

In order to meet the direct access requirements of the MCU to the SIM card, the 4G module provides the AT+CSIM command, and the MCU will send the APDU command to the SIM card to the 4G module through AT+CSIM (common SIM card access), and the module then Pass through to the SIM card.

In order to protect the SIM card, some 4G modules only provide AT+CRSM (restricted SIM card access) command, which limits the APUD range that the MCU can transmit.

Sometimes the MCU needs to perform multiple simultaneous operations on the SIM card. At this time, it is necessary to isolate the data and status through the logic channel (LogicChannel). The corresponding access command is AT+CGLA.

AT+CSIM/CRSM/CGLA, or other similar commands encapsulated by 4G modules, provide the MCU with the function of accessing (operating) the SIM card with APDU commands.

Further, an extension field is added to the operator code number in advance, and the extension field is used to store extended information corresponding to the operator code number, including:

An extension field is added to the operator code number in advance, and the extension field is used to store the access point name corresponding to the operator code number, the preferred network list, the available area, the specified type of the operator code number, and the timer interval.

During specific implementation, several fields are added to the operator code number of each group of SIM cards in advance to store the APN, OPLMN (preferred network list), available area, operator code number designation type and timing corresponding to the code number Extended information such as device interval.

Every time the code number is written in the factory or through OTA update, the content of the above-mentioned extended information is written into the SIM card together with the core field of the code number. In other words, after the core field of the operator's code number, several fields are expanded to form a complete set of code number data. But when stored in the SIM card, the extension field is stored in the extension table. This does not affect the structure of Core Data.

The specific method when OTA updates and writes the code number is as follows:

1) The SIM card obtains the IP address of the BIP server stored in the form of a domain name through DNS (Domain Name Resolution).

2) The SIM card accesses the IP address through the OPEN CHANNEL of the BIP protocol.

3) The BIP server issues new operator code information, including IMSI/KI/OPC, and extended information such as APN/OPLMN. And specify whether the code number is a seed card (Bootstrap) or a business card (Operational). and the new timer interval.

4) The SIM card writes the received code number information into the file system and sets a new timer.

5) Reboot the SIM card.

6) The new code number is online.

Among them, Open Channel/Close Channel: open/close the BIP channel, which is a command specified in the BIP protocol.

Operational: Business code number, the real resource provided to users.

Bootstrap: seed code number, the seed code number is written in the card making, usually several seed code numbers can be written in order to avoid failure of a single code number. When the SIM card is in the seed code state, one of them can be randomly selected as the activation code number. It can also accept specific commands such as BIP or AT in the running state to forcibly switch the seed number.

Further, the carrier code number switching command is detected in the AT command channel or BIP channel, and the operator code number data is obtained, including:

The SIM card detects the operator code number switching command on the AT command channel, and parses out the operator code number data issued by the AT channel;

Or, after the SIM card is activated, a BIP channel is established;

The IP address of the server is accessed based on the BIP channel, the operator code number switching instruction is detected, and the operator code number data issued by the server is obtained.

During specific implementation, the SIM card detects the operator code number switching command on the AT command channel, and parses out the operator code number data issued by the AT channel.

In addition to the AT command channel, the SIM card with this expansion capability can also establish an equivalent APDU command channel through BIP or 03.48 data messages, realizing a set of APDU commands and multiple operation channels. APDU: ApplicationProtocolDataUnit--Application Protocol Data Unit.

When operating through the BIP channel, the SIM card obtains the IP address of the BIP server stored in the form of a domain name through DNS (Domain Name Resolution). Or directly store the service IP in the SIM card without domain name resolution. The SIM card accesses the IP address through the OPEN CHANNEL of the BIP protocol. The BIP server issues new operator code information, including IMSI/KI/OPC, and extended information such as APN/OPLMN. And specify whether the code number is a seed card (Bootstrap) or a business card (Operational). and the new timer interval.

BIP can be regarded as a data transmission channel, similar to Bluetooth, network or 03.48 format data SMS.

The basic function of the BIP server is to establish a BIP channel with the SIM card, so as to transmit the APDU command agreed between the server and the SIM card on this channel.

The operator code number information issued by the BIP server is transmitted by the APDU command agreed by both parties.

Further, the operator code number data is encrypted operator code number data, and the operator code number data is written into the file system of the SIM card, including:

Decrypt the encrypted operator number data to obtain the decrypted operator number data;

Write the operator code number data into the file system of the SIM card.

During specific implementation, the APDU command carrying the code number information can also be transmitted to the MCU through a third-party non-BIP channel server or Bluetooth, and then the MCU sends it to the Modem through commands such as AT+CSIM and then transparently transmits it to the SIM card. So as to achieve the same effect as the BIP channel.

The operator code number data obtained by the MCU from a third party through the network, Bluetooth and other transmission methods is encrypted data, which can only be decrypted by one or more keys preset in the SIM card, thus ensuring the security of the operator code number. data security. A third party does not refer to a BIP server.

The encryption method listed in the present invention is one of the ways of encrypting and protecting confidential data such as code number information. Belongs to symmetric encryption. In addition, other more complex encryption methods such as asymmetric encryption can also be used to protect confidential data.

For example, 4 sets of encryption keys A/B/C/D can be generated in advance, and all 4 sets of keys can be written into the SIM card during the card making process.

When the server sends the operator code number information, the server randomly selects a key among A/B/C/D to encrypt the information. And specify which key is used among A/B/C/D in the issued command.

After the SIM card receives the information, it will select the corresponding key preset in the card to decrypt.

The embodiment of the present invention proposes a method for quickly switching the operator's code number. The mobile terminal can quickly realize the ability to flexibly switch the operator's code number by sending an extended APDU command through the AT command channel. The developer of the mobile terminal does not need to integrate or transplant third-party software, nor does it need to modify the firmware of the communication module, which avoids the risk of introduction, thereby ensuring the security of the product.

Remarks: Fallback: Fallback, which refers to switching back to the seed code number when the business code number cannot be used.

PLMN: Public Land Mobile Network, public land mobile network.

FPLMN: Disabled PLMN.

OPLMN: Preferred PLMN.

It should be noted that there is not necessarily a certain sequence between the above steps. Those of ordinary skill in the art can understand from the description of the embodiments of the present invention that in different embodiments, the above steps may have different execution sequences. That is, it can be executed in parallel, it can be executed alternately, and so on.

The method for quickly switching the operator code number in the embodiment of the present invention has been described above, and the system for quickly switching the operator code number in the embodiment of the present invention is described below. Please refer to FIG. A schematic diagram of the hardware structure of another embodiment of a system for quickly switching operator code numbers. As shown in FIG. Program, when the computer program is executed by the processor 101, the following steps are implemented:

Set the file system of the SIM card in advance;

An operator code number switching instruction is detected in the AT command channel or BIP channel, and the operator code number data is obtained, wherein the operator code number data includes the access point name corresponding to the operator code number, the preferred network list, and the available area , operator code number designation type and timer interval;

Write the operator code number data into the file system of the SIM card;

Control and restart the SIM card to complete the switching of the operator code number.

The specific implementation steps are the same as those in the method embodiments, and will not be repeated here.

Optionally, when the computer program is executed by the processor 101, the following steps are also implemented:

Allocate storage space in the file system of the SIM card in advance, and the storage space is used to store several operator code numbers;

Pre-adding an extension field to the operator code number, the extension field is used to store extended information corresponding to the operator code number;

The instruction format is extended in the SIM card in advance to generate extended instructions, and the extended instructions are used for writing, deleting, querying, switching, and reading extended information of the operator code number.

The specific implementation steps are the same as those in the method embodiments, and will not be repeated here.

Optionally, when the computer program is executed by the processor 101, the following steps are also implemented:

Pre-adding an extension field in the operator code number, the extension field is used to store extended information corresponding to the operator code number, including:

An extension field is added to the operator code number in advance, and the extension field is used to store the access point name corresponding to the operator code number, the preferred network list, the available area, the specified type of the operator code number, and the timer interval.

The specific implementation steps are the same as those in the method embodiments, and will not be repeated here.

Optionally, when the computer program is executed by the processor 101, the following steps are also implemented:

The SIM card detects the operator code number switching command on the AT command channel, and parses out the operator code number data issued by the AT channel;

Or, after the SIM card is activated, a BIP channel is established;

The IP address of the server is accessed based on the BIP channel, the operator code number switching instruction is detected, and the operator code number data issued by the server is obtained.

The specific implementation steps are the same as those in the method embodiments, and will not be repeated here.

Optionally, the operator code number data is encrypted operator code number data, and when the computer program is executed by the processor 101, the following steps are also implemented:

Decrypt the encrypted operator number data to obtain the decrypted operator number data;

Write the decrypted operator code number data into the file system of the SIM card.

The specific implementation steps are the same as those in the method embodiments, and will not be repeated here.

An embodiment of the present invention provides a non-volatile computer-readable storage medium, the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are executed by one or more processors, for example, executing the above-described Step S100 to step S400 of the method in FIG. 1 .

As examples, the nonvolatile storage medium can include Read Only Memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM), which acts as external cache memory. By way of illustration and not limitation, RAM can be implemented in formats such as Synchronous RAM (SRAM), Dynamic RAM, (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Available in many forms such as Direct Rambus RAM (DRRAM). The disclosed memory components or memories of the operating environments described in embodiments of the present invention are intended to include one or more of these and/or any other suitable types of memories.

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

Claims (10)

1. A method for quickly switching operator code numbers, characterized in that, comprising: Set the file system of the SIM card in advance; An operator code number switching instruction is detected in the AT command channel or BIP channel, and the operator code number data is obtained, wherein the operator code number data includes the access point name corresponding to the operator code number, the preferred network list, and the available area , operator code number designation type and timer interval; Write the operator code number data into the file system of the SIM card; Control and restart the SIM card to complete the switching of the operator code number. 2. The method for quickly switching operator code numbers according to claim 1, wherein said setting the file system of the SIM card in advance includes: Allocate storage space in the file system of the SIM card in advance, and the storage space is used to store several operator code numbers; Pre-adding an extension field to the operator code number, the extension field is used to store extended information corresponding to the operator code number; The instruction format is extended in the SIM card in advance to generate extended instructions, and the extended instructions are used for writing, deleting, querying, switching, and reading extended information of the operator code number. 3. The method for quickly switching operator code numbers according to claim 2, wherein an extension field is added to the operator code number in advance, and the extension field is used to store the operator code number corresponding Extended information, including: An extension field is added to the operator code number in advance, and the extension field is used to store the access point name corresponding to the operator code number, the preferred network list, the available area, the specified type of the operator code number, and the timer interval. 4. The method for quickly switching operator code numbers according to claim 3, wherein the operator code number switching instruction is detected at the AT command channel or the BIP channel, the operator code number data is obtained, and the operator code number data is obtained. Code number data, including: The SIM card detects the operator code number switching command on the AT command channel, and parses out the operator code number data issued by the AT channel; Or, after the SIM card is activated, a BIP channel is established; The IP address of the server is accessed based on the BIP channel, the operator code number switching instruction is detected, and the operator code number data issued by the server is obtained. 5. The method for quickly switching operator code numbers according to claim 4, wherein the operator code number data is encrypted operator code number data, and the operator code number data is written into the SIM card file system, including: Decrypt the encrypted operator number data to obtain the decrypted operator number data; Write the decrypted operator code number data into the file system of the SIM card. 6. A system for quickly switching operator code numbers, characterized in that the system includes: a memory, a processor, and a computer program stored on the memory and operable on the processor, the computer program When executed by said processor, the following steps are implemented: Set the file system of the SIM card in advance; An operator code number switching instruction is detected in the AT command channel or BIP channel, and the operator code number data is obtained, wherein the operator code number data includes the access point name corresponding to the operator code number, the preferred network list, and the available area , operator code number designation type and timer interval; Write the operator code number data into the file system of the SIM card; Control and restart the SIM card to complete the switching of the operator code number. 7. The system for quickly switching operator code numbers according to claim 6, wherein the computer program is implemented by the processor to implement the following steps: Allocate storage space in the file system of the SIM card in advance, and the storage space is used to store several operator code numbers; Pre-adding an extension field to the operator code number, the extension field is used to store extended information corresponding to the operator code number; The instruction format is extended in the SIM card in advance to generate extended instructions, and the extended instructions are used for writing, deleting, querying, switching, and reading extended information of the operator code number. 8. The system for quickly switching operator code numbers according to claim 7, wherein the computer program also implements the following steps when executed by the processor: An extension field is added to the operator code number in advance, and the extension field is used to store the access point name corresponding to the operator code number, the preferred network list, the available area, the specified type of the operator code number, and the timer interval. 9. The system for quickly switching operator code numbers according to claim 8, wherein the computer program also implements the following steps when executed by the processor: The SIM card detects the operator code number switching command on the AT command channel, and parses out the operator code number data issued by the AT channel; Or, after the SIM card is activated, a BIP channel is established; The IP address of the server is accessed based on the BIP channel, the operator code number switching instruction is detected, and the operator code number data issued by the server is obtained. 10. A non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by one or more processors , enabling the one or more processors to execute the method for quickly switching operator code numbers according to any one of claims 1-5.

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