Access method and apparatus, electronic device, computer readable storage medium

Abstract

The application provides an access method and device, electronic equipment and computer readable storage medium. The access method comprises the following steps: searching a first cell according to a public land mobile network (PLMN) of a first subscriber identity module (SIM) card; attempting to access the first cell when the first cell is searched; attempting to execute a target service in the first cell when the first cell is successfully accessed; the target service is a service specific to a target network which the terminal needs to access; storing a cell identifier of the first cell into an available cell identifier list and camping on the first cell when the target service is successfully executed.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to access methods and devices, electronic devices, and computer-readable storage media. Background Technology

[0002] Current fifth-generation mobile communication technology (5G, 5 th Generation Mobile Networks (GSM) are developing rapidly, distinct from fourth-generation mobile communication technology (4G). th Compared to pre-4G networks (Generation Mobile Networks), 5G networks, with their high bandwidth and low latency, are primarily used in industry applications. Industry applications mainly involve building dedicated networks to perform specific or specialized services, such as public safety monitoring. For network security reasons, public networks cannot be used to implement these specialized or specialized services; therefore, dedicated networks must be built to achieve this.

[0003] During the construction of dedicated networks, to differentiate them from existing commercial networks, the network side typically uses a special Public Land Mobile Network (PLMN) or the terminal uses a special Subscriber Identity Module (SIM) card number. During terminal access, the network side determines whether the terminal should connect to a dedicated or public network based on the PLMN or the terminal's SIM card number. However, with the recent widespread deployment of industry networks and the deployment requirements of certain dedicated networks, some dedicated networks use the same PLMN as public networks, and the terminals do not use special SIM card numbers. Therefore, the network side cannot distinguish whether a terminal should connect to a dedicated or public network. Currently, the methods for distinguishing whether a terminal should connect to a dedicated or public network cannot guarantee that the terminal will always connect to the correct network. Summary of the Invention

[0004] This application provides an access method and apparatus, an electronic device, and a computer-readable storage medium.

[0005] In a first aspect, embodiments of this application provide an access method applied to a terminal, the method comprising:

[0006] Search for the first cell based on the PLMN of the first SIM card;

[0007] If the first cell is found, attempt to connect to the first cell;

[0008] If the terminal successfully accesses the first cell, it attempts to execute the target service within the first cell; wherein the target service is a service specific to the target network that the terminal needs to access.

[0009] If the target service is successfully executed, the cell identifier of the first cell is stored in the list of available cell identifiers and resides in the first cell.

[0010] Secondly, embodiments of this application provide an electronic device, including:

[0011] At least one processor;

[0012] The memory stores at least one program, which, when executed by the at least one processor, implements any of the above access methods.

[0013] Thirdly, embodiments of this application provide a computer-readable storage medium storing a computer program, which, when executed by a processor, implements any of the above-described access methods.

[0014] Fourthly, embodiments of this application provide an access device, including:

[0015] The search module is used to search for the first cell based on the PLMN of the first SIM card;

[0016] The access module is used to attempt to access the first cell when the first cell is found.

[0017] The business module is used for:

[0018] If the terminal successfully accesses the first cell, it attempts to execute the target service within the first cell; wherein the target service is a service specific to the target network that the terminal needs to access.

[0019] If the target service is successfully executed, the cell identifier of the first cell is stored in the list of available cell identifiers and resides in the first cell.

[0020] The access method provided in this application determines whether the first cell belongs to the target network that the terminal needs to access based on whether it can access the first cell and whether it can execute the target service (i.e., the service specific to the target network that the terminal needs to access) in the first cell. If the terminal can access the first cell and successfully execute the target service, it is determined that the first cell belongs to the cell in the target network that the terminal needs to access. Then, the cell identifier of the first cell is stored in the list of available cell identifiers and the terminal is stationed in the first cell. Thus, the terminal can distinguish the target network that the terminal needs to access. Attached Figure Description

[0021] Figure 1 A flowchart illustrating an access method provided in one embodiment of this application;

[0022] Figure 2 A flowchart of an access method provided in Example 1 of this application embodiment;

[0023] Figure 3 A flowchart of an access method provided in Example 2 of this application embodiment;

[0024] Figure 4 This is a block diagram of an access device provided in another embodiment of this application. Detailed Implementation

[0025] The access method and apparatus, electronic equipment, and computer-readable storage medium provided in this application will be described in detail below with reference to the accompanying drawings.

[0026] Exemplary embodiments will be described more fully below with reference to the accompanying drawings; however, these exemplary embodiments may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this application will be thorough and complete, and will enable those skilled in the art to fully understand the scope of this application.

[0027] Where there is no conflict, the various embodiments of this application and the features thereof may be combined with each other.

[0028] As used herein, the term “and / or” includes any and all combinations of at least one related enumerated entry.

[0029] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application. As used herein, the singular forms “a” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. It will also be understood that when the terms “comprising” and / or “made of” are used in this specification, the presence of the stated feature, integral, step, operation, element, and / or component is specified, but the presence or addition of at least one other feature, integral, step, operation, element, component, and / or group thereof is not excluded.

[0030] Unless otherwise specified, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art. It will also be understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and this application, and will not be interpreted as having an idealized or overly formal meaning, unless expressly so defined herein.

[0031] Currently, the main approach is to increase the signal strength of the dedicated network to ensure that terminals can access it. Terminals then prioritize accessing the network with the strongest signal. While this method did allow terminals to quickly access the dedicated network during the experimental deployment phase, it encounters the following two problems in practical use:

[0032] One problem is that this method is only effective in a small area and becomes ineffective at the edge of a dedicated network cell deployment. As the signal weakens, the edge of a dedicated network cell deployment cannot guarantee a stronger signal than the public network, and terminals at the edge of a dedicated network cell deployment can easily access the public network.

[0033] Another issue is that, based on the random access algorithm of most chips in related technologies, the terminal prioritizes accessing the cell or frequency point it was previously registered with when it is powered on, rather than relying entirely on signal strength.

[0034] The two issues mentioned above mean that relying on signal strength to access a dedicated network cannot guarantee that the terminal can access the dedicated network every time it is powered on, and therefore cannot guarantee that the network accessed by the terminal is correct each time.

[0035] Figure 1 A flowchart of an access method provided in one embodiment of this application.

[0036] Firstly, referring to Figure 1 One embodiment of this application provides an access method, including:

[0037] Step 100: Search for the first cell based on the PLMN of the first SIM card.

[0038] In some exemplary embodiments, a PLMN can be an Equivalent Home PLMN (EHPLMN) or a Home PLMN (HPLMN), etc.

[0039] In this embodiment of the application, the first cell corresponding to the PLMN of the first SIM card may be one, two or more. When the first cell corresponding to the PLMN of the first SIM card is two or more, all the first cells corresponding to the PLMN of the first SIM card can be searched at once. Alternatively, one first cell can be searched first, and if it is impossible to access the first cell or execute the target service, another first cell can be searched, and so on, until a first cell that can be successfully accessed and the target service can be successfully executed is found.

[0040] Step 101: If the first cell is found, attempt to connect to the first cell.

[0041] In the embodiments of this application, attempting to access the first cell means attempting to access the first cell using any access method well known to those skilled in the art, and the specific access method is not limited. For example, sending an access request to the base station corresponding to the first cell; if the access request is accepted, it means that access to the first cell can be successfully achieved; if the access request is rejected, it means that access to the first cell cannot be achieved. Another example is attempting to access the first cell using a random contention access method.

[0042] Step 102: If the terminal successfully accesses the first cell, attempt to execute the target service in the first cell; wherein, the target service is a service specific to the target network that the terminal needs to access.

[0043] In some exemplary embodiments, the target network is either a private network or a public network.

[0044] In this application embodiment, in the scenario of distinguishing between private networks and public networks, the target service is a service unique to the private network that the terminal needs to access; that is, the target service is not a service in the public network.

[0045] Alternatively, the target service may be a service specific to the public network that the terminal needs to access; in other words, the target service is not a service in a private network.

[0046] In the embodiments of this application, the target service can be any service, and attempting to execute the target service means attempting to perform the operation of the target service using any method well known to those skilled in the art. For example, the target service is pinging a pre-set server address specific to the target network. Attempting to execute the target service can be attempting to ping the pre-set server address specific to the target network, that is, after receiving the ping command, sending information to the server address corresponding to the ping command; if the server can be pinged successfully, that is, the information returned by the server is received, it means that the execution of the target service is successful; if the server cannot be pinged successfully, that is, no information returned by the server is received, it means that the execution of the target service is unsuccessful.

[0047] For scenarios that distinguish between private and public networks, the server address unique to the target network can refer to a server address that exists in the private network but not in the public network, or a server address that exists in the public network but not in the private network.

[0048] In this embodiment of the application, the target network that the terminal needs to access refers to the network to which the terminal's first SIM card belongs. For example, if the first SIM card is a card of a dedicated network, then the target network is the dedicated network; if the first SIM card is a card of a public network, then the target network is the public network.

[0049] Step 103: If the target service is successfully executed, store the cell identifier of the first cell in the list of available cell identifiers and reside in the first cell.

[0050] In this embodiment of the application, if the terminal successfully accesses the first cell and successfully executes the target service in the first cell, it means that the network to which the first cell belongs is the same as the network to which the first SIM card belongs. That is, the first cell is a cell in the target network, and the terminal can camp on the first cell.

[0051] If the terminal cannot access the first cell or cannot perform the target service in the first cell, it means that the network to which the first cell belongs is different from the network to which the first SIM card belongs. In other words, the first cell is not a cell in the target network, and the terminal cannot camp on the first cell.

[0052] In some exemplary embodiments, before searching for a first cell based on the PLMN of the first SIM card, the method further includes:

[0053] The second cell is searched based on the PLMN of the first SIM card; wherein, the second cell is the cell corresponding to the cell identifier in the pre-stored list of available cell identifiers, and the list of available cell identifiers includes: cell identifiers of cells where the terminal has previously successfully accessed and executed the target service.

[0054] If a second cell cannot be found, continue to perform the step of searching for the first cell based on the PLMN of the first SIM card; wherein, the first cell is the cell corresponding to a cell identifier that is not in the list of available cell identifiers.

[0055] In some exemplary embodiments, if at least one second cell is found, the method further includes: accessing the found second cell.

[0056] In this embodiment of the application, since searching for a cell requires searching based on the cell's frequency, the list of available cell identifiers should also store the frequency corresponding to the cell identifiers of cells that the terminal has previously successfully accessed and executed the target service. This allows the search to be performed based on the frequency of the second cell when searching for a second cell based on the PLMN of the first SIM card.

[0057] In this embodiment of the application, the list of available cell identifiers is empty when the device is powered on for the first time or when it is first connected to the network. The list of available cell identifiers can be updated according to the actual situation for each subsequent connection.

[0058] In this embodiment of the application, "not finding a second cell" means that no cell corresponding to any cell identifier in the list of available cell identifiers can be found, and "finding at least one second cell" means that at least one cell corresponding to any cell identifier in the list of available cell identifiers can be found.

[0059] In the following exemplary embodiments, the cell identifier may be a Global Cell ID (GID) or a Physical Cell ID (PCI).

[0060] In this embodiment of the application, since searching for a cell requires searching based on the cell's frequency, the list of available cell identifiers should also store the frequency corresponding to the first cell, so that when searching for the first cell later, the search can be performed based on the frequency of the first cell.

[0061] In some exemplary embodiments, when the first SIM card is replaced with a second SIM card, the method further includes:

[0062] Delete or clear the list of available cell identifiers; where the first SIM card and the second SIM card belong to different networks.

[0063] Replacing the first SIM card with the second SIM card can be done by replacing a public network SIM card with a private network SIM card, or vice versa.

[0064] In some exemplary embodiments, when a first cell is detected, the method further includes:

[0065] If the first cell is not the cell corresponding to a cell in the pre-stored list of disabled cell identifiers, continue to execute the steps of attempting to access the first cell;

[0066] The list of disabled cell identifiers includes cell identifiers that terminals were previously unable to access or perform the target service.

[0067] In some exemplary embodiments, if the first cell is the cell corresponding to a cell identifier in the list of disabled cell identifiers, and if all first cells corresponding to the PLMN of the first SIM card have been searched previously, it is only necessary to determine whether the other first cells are cells corresponding to cell identifiers in the list of disabled cell identifiers; if only one first cell corresponding to the PLMN of the first SIM card has been searched previously, it is necessary to search the other first cells and then perform the step of determining whether the first cell is a cell corresponding to a cell identifier in the list of disabled cell identifiers.

[0068] If all the first cells corresponding to the PLMN of the first SIM card are cells corresponding to cell identifiers in the list of disabled cell identifiers, it means that the networks to which all the first cells belong are different from the networks to which the first SIM card belongs, and this process ends.

[0069] In some exemplary embodiments, since the cell corresponding to the cell identifier in the list of disabled cell identifiers is not the cell that the terminal wants to access, that is, the cell that the terminal does not need to specifically search for, the list of disabled cell identifiers does not need to store the frequency point corresponding to the cell identifier.

[0070] In some exemplary embodiments, in order to avoid cells corresponding to cell identifiers in the list of prohibited cell identifiers during the search, the frequency points corresponding to cell identifiers can also be stored in the list of prohibited cell identifiers, so that the frequency points corresponding to these cell identifiers can be avoided during the search process, ensuring that the frequency points corresponding to these cell identifiers will not be searched during the search process.

[0071] If the frequency corresponding to the cell identifier in the list of prohibited cell identifiers is avoided during the search process, then after the first cell is found, it is not necessary to check again whether the first cell is the cell corresponding to the cell identifier in the list of prohibited cell identifiers.

[0072] In some exemplary embodiments, when access to the first cell is unavailable or the target service cannot be performed in the first cell, the method further includes: determining that the first cell is not a cell in the target network, and storing the cell identifier of the first cell in a list of disabled cell identifiers.

[0073] In this embodiment, if the terminal cannot access the first cell or cannot execute the target service in the first cell, the PLMN of the first cell is not stored in the disabled PLMN list. Instead, the cell identifier of the first cell is stored in the disabled cell identifier list. This way, the terminal can search for other cells under the PLMN and will not cause the terminal to fail to access.

[0074] In some exemplary embodiments, since the cell corresponding to the cell identifier in the list of disabled cell identifiers is not the cell that the terminal wants to access, that is, the cell that the terminal does not need to specifically search for, the list of disabled cell identifiers does not need to store the frequency point corresponding to the first cell.

[0075] In some exemplary embodiments, in order to avoid cells corresponding to cell identifiers in the list of prohibited cell identifiers during the search, the frequency point corresponding to the first cell can also be stored in the list of prohibited cell identifiers, so that the frequency point corresponding to the first cell can be avoided during the subsequent search process, ensuring that the frequency point corresponding to the first cell will not be searched during the search process.

[0076] In some exemplary embodiments, when the first SIM card is replaced with a second SIM card, the method further includes:

[0077] The list of disabled cell identifiers will be deleted or cleared; the first SIM card and the second SIM card belong to different networks.

[0078] In this embodiment of the application, the list of disabled cell identifiers is empty when the device is powered on for the first time or when it is first connected. The list of available cell identifiers can be updated according to the actual situation for each subsequent connection.

[0079] The access method provided in this application determines whether the first cell belongs to the target network that the terminal needs to access based on whether it can access the first cell and whether it can execute the target service (i.e., the service specific to the target network that the terminal needs to access) in the first cell. If the terminal can access the first cell and successfully execute the target service, it is determined that the first cell belongs to the target network that the terminal needs to access. Then, the cell identifier of the first cell is stored in the list of available cell identifiers and the terminal is stationed in the first cell. Thus, the terminal can distinguish the target network that the terminal needs to access.

[0080] The following detailed description of the complete implementation process of the access method of the embodiments of this application is provided through specific examples. The examples listed are only for presenting the entire access method and are not intended to limit the protection scope of the embodiments of this application.

[0081] Example 1

[0082] This example describes a method for a terminal to access a public network when both a private network and a public network coexist. Figure 2 As shown, the method includes:

[0083] Step 200: The terminal reads the list of available cell identifiers. The list of available cell identifiers stores the cell identifiers that have previously successfully accessed and executed the target service on the public network.

[0084] Step 201: The terminal searches for the cell corresponding to the cell identifier in the list of available cell identifiers (i.e., the second cell mentioned above) based on the PLMN of the first SIM card.

[0085] Step 202: The terminal determines whether it has found a cell corresponding to a cell identifier in the list of available cell identifiers (i.e., the second cell mentioned above); if it has found a cell corresponding to at least one cell identifier in the list of available cell identifiers, it directly accesses the found cell and the process ends; if it has not found cells corresponding to all cell identifiers in the list of available cell identifiers, it proceeds to step 203.

[0086] Step 203: The terminal searches for the cell (i.e., the first cell mentioned above) that is not in the list of available cell identifiers based on the PLMN of the first SIM card.

[0087] Step 204: The terminal reads the list of disabled cell identifiers. The list of disabled cell identifiers stores cell identifiers that were previously unable to access or perform target services on the public network.

[0088] Step 205: The terminal determines whether the searched cell is the cell corresponding to a cell identifier in the list of disabled cell identifiers. If the searched cell is the cell corresponding to a cell identifier in the list of disabled cell identifiers, it returns to step 203 until all cells corresponding to the PLMN have been searched. If the searched cell is not the cell corresponding to a cell identifier in the list of disabled cell identifiers, it proceeds to step 206.

[0089] Step 206: The terminal attempts to access the searched cell.

[0090] Step 207: The terminal determines whether it has successfully accessed the searched cell. If it has successfully accessed the searched cell, proceed to step 208; if it cannot access the searched cell, proceed to step 209.

[0091] Step 208: The terminal attempts to execute public network-specific services in the searched cells. If the execution of public network-specific services is successful, proceed to step 210; if the execution of public network-specific services is unsuccessful, proceed to step 209.

[0092] Step 209: The terminal determines that the searched cell is not a cell in the public network, stores the cell identifier of the searched cell in the list of disabled cell identifiers, and returns to step 203 until all cells corresponding to the PLMN have been searched.

[0093] Step 210: The terminal determines that the searched cell is a cell in the public network, stores the cell identifier of the searched cell in the list of available cell identifiers, and camps on the searched cell.

[0094] Example 2

[0095] This example describes a method for a terminal to access a private network when both a private network and a public network coexist. Figure 3 As shown, the method includes:

[0096] Step 300: The terminal reads the list of available cell identifiers. The list of available cell identifiers stores the cell identifiers that have previously successfully accessed and executed the target service of the private network.

[0097] Step 301: The terminal searches for the cell corresponding to the cell identifier in the list of available cell identifiers (i.e., the second cell mentioned above) based on the PLMN of the first SIM card.

[0098] Step 302: The terminal determines whether it has found a cell corresponding to a cell identifier in the list of available cell identifiers (i.e., the second cell mentioned above); if it has found a cell corresponding to at least one cell identifier in the list of available cell identifiers, it directly accesses the found cell and the process ends; if it has not found cells corresponding to all cell identifiers in the list of available cell identifiers, it proceeds to step 303.

[0099] Step 303: The terminal searches for the cell (i.e. the first cell mentioned above) that is not in the list of available cell identifiers based on the PLMN of the first SIM card.

[0100] Step 304: The terminal reads the list of disabled cell identifiers. The list of disabled cell identifiers stores the cell identifiers that were previously unable to access or execute the target services of the private network.

[0101] Step 305: The terminal determines whether the searched cell is the cell corresponding to a cell identifier in the list of disabled cell identifiers. If the searched cell is the cell corresponding to a cell identifier in the list of disabled cell identifiers, the terminal returns to step 303 until all cells corresponding to the PLMN have been searched. If the searched cell is not the cell corresponding to a cell identifier in the list of disabled cell identifiers, the terminal proceeds to step 306.

[0102] Step 306: The terminal attempts to connect to the searched cell.

[0103] Step 307: The terminal determines whether it has successfully accessed the searched cell. If it has successfully accessed the searched cell, proceed to step 308; if it cannot access the searched cell, proceed to step 309.

[0104] Step 308: The terminal attempts to execute a service specific to the private network in the searched cell. If the execution of the service specific to the private network is successful, proceed to step 310; if the execution of the service specific to the private network is unsuccessful, proceed to step 309.

[0105] Step 309: The terminal determines that the searched cell is not a cell in the private network, stores the cell identifier of the searched cell in the list of disabled cell identifiers, and returns to step 303 until all cells corresponding to the PLMN have been searched.

[0106] Step 310: The terminal determines that the searched cell is a cell in a private network, stores the cell identifier of the searched cell in the list of available cell identifiers, and camps on the searched cell.

[0107] Secondly, another embodiment of this application provides an electronic device, including:

[0108] At least one processor;

[0109] The memory stores at least one program, which, when executed by at least one processor, implements any of the above access methods.

[0110] Among them, the processor is a device with data processing capabilities, including but not limited to the central processing unit (CPU); the memory is a device with data storage capabilities, including but not limited to random access memory (RAM, more specifically such as SDRAM, DDR, etc.), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), and flash memory (FLASH).

[0111] In some embodiments, the processor and memory are interconnected via a bus, and thus connected to other components of the computing device.

[0112] Thirdly, another embodiment of this application provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements any of the above-described access methods.

[0113] Figure 4 This is a block diagram of an access device provided in another embodiment of this application.

[0114] Fourthly, refer to Figure 4 Another embodiment of this application provides an access device, including:

[0115] Search module 401 is used to search for the first cell based on the PLMN of the first SIM card;

[0116] Access module 402 is used to attempt to access the first cell when the first cell is found;

[0117] Business module 403 is used for:

[0118] If successful access is made to the first cell, the target service is attempted to be executed within the first cell; the target service is a service specific to the target network that the terminal needs to access.

[0119] If the target service is successfully executed, the cell identifier of the first cell is stored in the list of available cell identifiers and resides in the first cell.

[0120] In some exemplary embodiments, the search module 401 is further configured to:

[0121] The second cell is searched based on the PLMN of the first SIM card; wherein, the second cell is the cell corresponding to the cell identifier in the pre-stored list of available cell identifiers, and the list of available cell identifiers includes: cell identifiers of cells where the terminal has previously successfully accessed and executed the target service.

[0122] If no second cells can be found, continue to perform the step of searching for the first cell based on the PLMN of the first SIM card; where the first cell is the cell corresponding to a cell identifier that is not in the list of available cell identifiers.

[0123] In some exemplary embodiments, the access module 402 is further configured to:

[0124] If at least one second cell is found, access is made to the found second cell.

[0125] In some exemplary embodiments, it also includes:

[0126] The storage module 404 is used to delete or clear the list of available cell identifiers when the first SIM card is replaced with the second SIM card; wherein the first SIM card and the second SIM card belong to different networks.

[0127] In some exemplary embodiments, the access module 402 is further configured to:

[0128] If the first cell is found, and if the first cell is not the cell corresponding to the cell identifier in the pre-stored list of disabled cell identifiers, continue to execute the step of attempting to access the first cell;

[0129] The list of disabled cell identifiers includes cell identifiers that terminals were previously unable to access or perform the target service.

[0130] In some exemplary embodiments, it also includes:

[0131] The storage module 404 is used to store the cell identifier of the first cell into the list of disabled cell identifiers when it is unable to access the first cell or when the target service cannot be executed in the first cell.

[0132] In some exemplary embodiments, it also includes:

[0133] The storage module 404 is used to delete or clear the list of disabled cell identifiers when the first SIM card is replaced with the second SIM card; wherein the first SIM card and the second SIM card belong to different networks.

[0134] In some exemplary embodiments, the target network is either a private network or a public network.

[0135] The specific implementation process of the access device in this application embodiment is the same as that of the access method in the foregoing embodiment, and will not be repeated here.

[0136] It will be understood by those skilled in the art that all or some of the steps, systems, or apparatuses disclosed above, and their functional modules / units, can be implemented as software, firmware, hardware, or suitable combinations thereof. In hardware implementations, the division between functional modules / units mentioned above does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed collaboratively by several physical components. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit (ASIC). Such software may be distributed on a computer-readable medium, which may include computer storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage, or any other medium that can be used to store desired information and can be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0137] Example embodiments have been disclosed herein, and while specific terminology has been used, it is for illustrative purposes only and should be construed as such, and is not intended to be limiting. In some instances, it will be apparent to those skilled in the art that features, characteristics, and / or elements described in connection with particular embodiments may be used alone, or in combination with features, characteristics, and / or elements described in connection with other embodiments, unless otherwise expressly indicated. Therefore, those skilled in the art will understand that various changes in form and detail may be made without departing from the scope of this application as set forth by the appended claims.

Claims

1. An access method applied to a terminal, the method comprising: The first cell is searched based on the public land mobile network (PLMN) of the first customer identification module SIM card; If the first cell is found, attempt to connect to the first cell; Upon successful access to the first cell, the terminal attempts to execute the target service within the first cell. The target service is a service specific to the target network the terminal needs to access, and the target network can be either a private network or a public network. In scenarios distinguishing between private and public networks, the target service is either a service specific to the private network the terminal needs to access and not a service in the public network, or a service specific to the public network the terminal needs to access and not a service in the private network. If the target service is successfully executed, the cell identifier of the first cell is stored in the list of available cell identifiers and resides in the first cell.

2. The access method according to claim 1, wherein, Before searching for the first cell based on the Public Land Mobile Network (PLMN) of the first Subscriber Identity Module (SIM) card, the method further includes: The second cell is searched according to the PLMN of the first SIM card; wherein the second cell is the cell corresponding to the cell identifier in the pre-stored list of available cell identifiers, and the list of available cell identifiers includes: cell identifiers of cells where the terminal has previously successfully accessed and executed the target service. If the second cell cannot be found, the step of searching for the first cell based on the public land mobile network (PLMN) of the first customer identification module (SIM card) continues; wherein the first cell is the cell that is not in the list of available cell identifiers.

3. The access method according to claim 2, wherein, If at least one second cell is found, the method further includes: accessing the found second cell.

4. The access method according to any one of claims 2-3, wherein, When the first SIM card is replaced with a second SIM card, the method also includes: Delete or clear the list of available cell identifiers; wherein the first SIM card and the second SIM card belong to different networks.

5. The access method according to claim 1, wherein, If the first cell is found, the method further includes: If the first cell is not a cell corresponding to a cell identifier in the pre-stored list of disabled cell identifiers, continue to perform the step of attempting to access the first cell; The list of disabled cell identifiers includes cell identifiers that the terminal was previously unable to access or execute the target service.

6. The access method according to claim 1, wherein, If access to the first cell is unavailable, or the target service cannot be executed in the first cell, the method further includes: storing the cell identifier of the first cell in a list of disabled cell identifiers.

7. The access method according to claim 5 or 6, wherein, When the first SIM card is replaced with a second SIM card, the method also includes: Delete or clear the list of disabled cell identifiers; wherein the first SIM card and the second SIM card belong to different networks.

8. An electronic device, comprising: At least one processor; A memory, wherein at least one program is stored thereon, which, when executed by the at least one processor, implements the access method according to any one of claims 1-7.

9. A computer-readable storage medium storing a computer program that, when executed by a processor, implements the access method according to any one of claims 1-7.

10. An access device applied to a terminal, the device comprising: The search module is used to search for the first cell based on the public land mobile network (PLMN) of the first customer identification module SIM card; The access module is used to attempt to access the first cell when the first cell is found. The business module is used for: Upon successful access to the first cell, the terminal attempts to execute the target service within the first cell. The target service is a service specific to the target network the terminal needs to access, and the target network can be either a private network or a public network. In scenarios distinguishing between private and public networks, the target service is either a service specific to the private network the terminal needs to access and not a service in the public network, or a service specific to the public network the terminal needs to access and not a service in the private network. If the target service is successfully executed, the cell identifier of the first cell is stored in the list of available cell identifiers and resides in the first cell.

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