Terminal control method, base station, and storage medium

Abstract

This application provides a terminal control method, base station, and storage medium. The method includes: when a first base station receives a service request for a predetermined service from a terminal, it sends a pre-handover request carrying a predetermined service identifier to a second base station, so that the second base station returns pre-handover success information to the first base station. The second base station stores configuration information of the first base station. When the first base station receives the pre-handover success information, it sends a handover command to the terminal, so that the terminal accesses the second base station and sends terminal capability information. When the first base station does not support the predetermined service and the terminal does not support the predetermined service in the communication system to which the first base station belongs, the second base station, during the process of processing the predetermined service for the terminal, controls the terminal to always access the second base station based on the predetermined service identifier, the first base station configuration information, and the terminal capability information. Therefore, this application embodiment can control the terminal to always access the second base station, ensuring that the terminal can normally perform the predetermined service.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a terminal control method, a base station, and a storage medium. Background Technology

[0002] In 3GPP (3rd Generation Partnership Project) mobile communication systems, high-level protection strategies are provided for scheduled services related to personal health and property safety, such as emergency calls. However, a situation exists where a first base station switches a currently connected terminal to a second base station to handle the aforementioned scheduled service. During this process, the terminal may reconnect to the first base station, causing the scheduled service to fail or be interrupted. For example, a 5G base station switches a currently connected terminal to a 4G base station to handle emergency calls, but the terminal may reconnect to the first base station during this process, resulting in the emergency call service failing or being interrupted. Summary of the Invention

[0003] Based on this, embodiments of this application provide a terminal control method, a base station, and a storage medium to ensure that the terminal does not reconnect to the first base station during the process of the second base station processing the predetermined services for the terminal after the first base station switches the terminal to the second base station.

[0004] In a first aspect, embodiments of this application provide a terminal control method for a first base station, the method comprising:

[0005] When a service request for a pre-defined service is received from a terminal, a pre-switching request carrying a pre-defined service identifier is sent to a second base station. The second base station stores configuration information of a first base station, which is used to characterize whether the first base station supports the pre-defined service.

[0006] Upon receiving the pre-handover success information returned by the second base station, a handover command is sent to the terminal to enable the terminal to access the second base station and send terminal capability information, wherein the terminal capability information is used to characterize whether the terminal supports the predetermined service in the communication system to which the first base station belongs;

[0007] Wherein, when the first base station does not support the predetermined service and the terminal does not support the predetermined service in the communication system to which the first base station belongs, the predetermined service identifier, the first base station configuration information, and the terminal capability information are used to control the terminal to always access the second base station during the process of the second base station processing the predetermined service for the terminal.

[0008] Furthermore, this application embodiment also provides a terminal control method for a second base station, the second base station storing configuration information of a first base station, the first base station configuration information being used to characterize whether the first base station supports a pre-defined service, the method comprising:

[0009] When a pre-handover request carrying a predetermined service identifier is received from the first base station, a pre-handover success message is returned to the first base station so that the first base station can send a handover command to the terminal. The handover command is used to enable the terminal to access the second base station and send terminal capability information. The terminal capability information is used to characterize whether the terminal supports the predetermined service in the communication system to which the first base station belongs.

[0010] If the first base station does not support the predetermined service and the terminal does not support the predetermined service in the communication system to which the first base station belongs, then during the process of processing the predetermined service for the terminal, the terminal is controlled to always access the second base station according to the predetermined service identifier, the terminal capability information and the first base station configuration information.

[0011] Secondly, embodiments of this application provide a base station, including a processor and a memory; the memory is used to store a computer program; the processor is used to execute the computer program and implement the terminal control method as described in the first aspect when executing the computer program.

[0012] Thirdly, embodiments of this application provide a computer-readable storage medium storing a computer program that, when executed by a processor, causes the processor to implement the terminal control method as described in the first aspect.

[0013] This application provides a terminal control method, base station, and storage medium. The method includes: when a first base station receives a service request for a predetermined service from a terminal, it sends a pre-handover request carrying a predetermined service identifier to a second base station, so that the second base station returns pre-handover success information to the first base station. The second base station stores configuration information of the first base station. When the first base station receives the pre-handover success information, it sends a handover command to the terminal, so that the terminal accesses the second base station and sends terminal capability information. When the first base station does not support the predetermined service and the terminal does not support the predetermined service in the communication system to which the first base station belongs, the second base station, during the process of processing the predetermined service for the terminal, controls the terminal to always access the second base station based on the predetermined service identifier, the first base station configuration information, and the terminal capability information. Therefore, this application embodiment can control the terminal to always access the second base station, ensuring that the terminal can normally perform the predetermined service. Attached Figure Description

[0014] Figure 1A schematic flowchart of a terminal control method provided in an embodiment of this application;

[0015] Figure 2 This is a flowchart illustrating an embodiment of the present application in a applicable scenario.

[0016] Figure 3 A flowchart illustrating the terminal control method provided in this application when applied to a first base station;

[0017] Figure 4 A flowchart illustrating the terminal control method provided in this application when applied to a second base station;

[0018] Figure 5 This is a schematic block diagram of a base station structure provided in an embodiment of this application. Detailed Implementation

[0019] The technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments in this specification. All other embodiments obtained by those skilled in the art based on the embodiments in this specification without creative effort are within the scope of protection of this specification.

[0020] The flowchart shown in the attached diagram is for illustrative purposes only and does not necessarily include all content and operations / steps, nor does it necessarily have to be performed in the described order. For example, some operations / steps can be broken down, combined, or partially merged, so the actual execution order may change depending on the actual situation.

[0021] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of this specification. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0022] The terminal control method provided in this application embodiment can be applied to base stations, such as... Figure 1 As shown, the method may include, but is not limited to, steps S10 to S30.

[0023] Step S10: When the first base station receives a service request for a pre-subscribed service from the terminal, it sends a pre-handover request carrying a pre-subscribed service identifier to the second base station, so that the second base station returns pre-handover success information to the first base station.

[0024] Step S20: When the first base station receives the pre-handover success information, it sends a handover command to the terminal so that the terminal can access the second base station and send terminal capability information.

[0025] When a user initiates a pre-booked service (such as an emergency call service) through a terminal, the terminal sends a service request for the pre-booked service to a first base station. Since the terminal has a higher priority for accessing the first base station than for accessing the second base station, it can be understood that the terminal is accessing the first base station at this time. Specifically, it may access a cell within the first base station (for ease of discussion, this embodiment refers to it as the serving cell). When the first base station receives the aforementioned service request, if it cannot process the pre-booked service for the terminal or if the terminal does not support the pre-booked service in the communication system to which the first base station belongs (for example, the first base station is a 5G base station and the terminal does not support the emergency call service in 5G), then the terminal needs to be switched to the second base station, which will then process the pre-booked service for the terminal. It should be noted that the reasons why the first base station cannot process the pre-booked service for the terminal include, but are not limited to, the following: the first base station lacks the relevant configuration for the pre-booked service, such as the configuration for the emergency call service.

[0026] Based on this, in order for the second base station to know that the terminal to be switched over needs to process a predetermined service, the first base station can send a pre-switching request carrying a predetermined service identifier to the second base station. This allows the second base station to know, based on the predetermined service identifier, that the terminal to be switched over is processing a predetermined service. Therefore, the second base station can perform pre-access preparations for the terminal based on the predetermined service. For example, it can perform pre-access preparation measures for the terminal according to the relevant provisions of the communication protocol for the predetermined service. After completing the pre-access preparations for the terminal, the second base station will return a pre-switching success message to the first base station, allowing the first base station to know that the terminal can be switched to the second base station. Therefore, the first base station can send a handover command to the terminal to enable the terminal to access the second base station and send terminal capability information to the second base station. This terminal capability information characterizes whether the terminal supports the predetermined service in the communication system to which the first base station belongs, such as whether it supports emergency call services in 5G. Thus, after the terminal accesses the second base station, the second base station can determine whether the terminal supports the predetermined service in the communication system to which the first base station belongs based on the terminal capability information. In some embodiments, the terminal can access a specific cell in the second base station. This cell can be a cell specified by the terminal; for ease of discussion, this embodiment refers to it as the target cell. In addition, the second base station pre-stores the configuration information of the first base station. The configuration information of the first base station can be used to characterize whether the first base station supports the pre-defined service, such as whether the first base station supports the emergency call service. In other words, the second base station can know whether the first base station supports the pre-defined service based on the configuration information of the first base station.

[0027] In some embodiments, step S10 may include, but is not limited to, steps S101 to S102.

[0028] Step S101: When the first base station receives a service request for a predetermined service sent by the terminal, it sends a pre-handover request carrying the predetermined service identifier to the second base station according to the handover instruction in the service request.

[0029] In step S102, the second base station allocates reserved resources for the handover priority of the terminal according to the predetermined service identifier, and returns pre-handover success information to the first base station.

[0030] The service request sent by the terminal to the first base station may include a handover indication, enabling the first base station to send a pre-handover request carrying a predetermined service identifier to the second base station based on the handover indication. Furthermore, as mentioned above, the predetermined service identifier allows the second base station to know that the terminal to be handed over needs to process a predetermined service. Therefore, the second base station can prioritize allocating reserved resources for the terminal handover based on the predetermined service identifier, such as prioritizing bearer resources, thus prioritizing pre-access preparation for the terminal handover. This can effectively shorten the call delay for the terminal to perform the predetermined service; for example, it effectively shortens the call delay for the terminal to perform an emergency call, simply put, shortening the time before the terminal connects to an emergency call (e.g., 119).

[0031] In some embodiments, as described above, the handover command can enable the terminal to access the target cell in the second base station. However, when the terminal fails to access the second base station, it may re-access the first base station, for example, by re-accessing any cell within the first base station. This would prolong the call latency for the terminal to perform emergency call services. Therefore, to enable the terminal to re-access the second base station when it fails to access the second base station, the handover command in step S20 can carry a predetermined service identifier. This allows the terminal to re-access the second base station according to the indication of the predetermined service identifier, for example, by re-accessing any cell within the second base station. Furthermore, since the second base station may lose the predetermined service identifier when the terminal fails to access the second base station, the predetermined service identifier carried in the handover command can also instruct the terminal to carry the predetermined service identifier in the access information. This ensures that the second base station can control the terminal to always access the second base station during subsequent processing of the predetermined service. It is understood that this ensures the terminal will not re-access the first base station and effectively shortens the call latency for the terminal to perform emergency call services.

[0032] In some embodiments, the first base station stores terminal status information, which is used to characterize the current service status of the terminal. Based on this, after sending a handover command to the terminal, the method further includes, but is not limited to, step S201.

[0033] Step S201: When the terminal fails to access the second base station and re-accesses the first base station, the first base station controls the terminal to re-access the second base station according to the terminal status information and instructs the terminal to carry the predetermined service identifier in the access information.

[0034] As mentioned above, the handover command allows the terminal to access the target cell in the second base station. However, if the terminal fails to access the second base station, it may re-access the first base station, for example, by re-accessing any cell within the first base station. This requires the first base station to resend a pre-handover request to the second base station, thus extending the call latency for emergency calls. Therefore, terminal status information can be stored in the first base station in real time. When the terminal initiates a service request for a pre-defined service, this terminal status information can be used to indicate that the terminal needs to perform the pre-defined service. Thus, when the terminal fails to access the second base station and re-accesses the first base station, the first base station can control the terminal to re-access the second base station based on the terminal status information. In some embodiments, the first base station can control the terminal to re-access the second base station via redirection, a method well-known to those skilled in the art and not described in detail here. Furthermore, since the second base station may lose the pre-defined service identifier when the terminal fails to access the second base station, the first base station can also instruct the terminal to carry the pre-defined service identifier in the access information based on the terminal status information, ensuring that the second base station can control the terminal to always access the second base station during subsequent processing of the pre-defined service. This can be understood as shortening the call latency for emergency calls.

[0035] Step S30: When the first base station does not support the pre-booked service and the terminal does not support the pre-booked service in the communication system to which the first base station belongs, the second base station, in the process of processing the pre-booked service for the terminal, controls the terminal to always access the second base station according to the pre-booked service identifier, the configuration information of the first base station and the terminal capability information.

[0036] After a terminal successfully connects to the second base station, the second base station can process the pre-booked service for the terminal. However, in existing technologies, during the process of the second base station processing the pre-booked service, the terminal may reconnect to the first base station. On the one hand, the terminal may reconnect to the first base station before the pre-booked service is connected, which could cause the pre-booked service to fail. For example, if the terminal reconnects to the first base station before the emergency call service is connected, the emergency call service will fail to connect. On the other hand, the terminal may also reconnect to the first base station after the pre-booked service is connected and during the establishment of the pre-booked service, which could cause the pre-booked service to be interrupted. For example, if the terminal reconnects to the first base station after the emergency call service is connected and during the establishment of the emergency call service (i.e., during a call), the emergency call service will be interrupted. Therefore, after the terminal successfully connects to the second base station, if the second base station knows from the configuration information of the first base station that the first base station does not support the pre-booked service, and from the terminal's capability information that the terminal does not support the pre-booked service in the communication system to which the first base station belongs, then during the process of processing the pre-booked service for the terminal, the second base station can control the terminal to always connect to the second base station based on the pre-booked service identifier, the configuration information of the first base station, and the terminal's capability information. That is, the terminal will not reconnect to the first base station, ensuring that the terminal can normally perform the pre-booked service, thus solving the problems existing in the prior art.

[0037] In some embodiments, step S30 may include, but is not limited to, step S301.

[0038] In step S301, before the second base station connects the terminal to the predetermined service, it controls the terminal to always access the second base station according to the predetermined service identifier, and during the establishment of the predetermined service for the terminal, it controls the terminal to always access the second base station according to the configuration information of the first base station and the terminal capability information.

[0039] As mentioned above, the second base station can determine the purpose of the terminal to be switched over for processing a predetermined service based on the predetermined service identifier. Therefore, before connecting the terminal to the predetermined service, the second base station can control the terminal to always be connected to the second base station based on the first service identifier, thereby ensuring that the predetermined service can be connected to the terminal. For example, before connecting the terminal to the emergency call service, the second base station controls the terminal to always be connected to the second base station based on the first service identifier, thereby ensuring that the emergency call service can be connected to the terminal. Simply put, this ensures that the terminal can make an emergency call (e.g., 119). In addition, the second base station can also determine the purpose of the predetermined service based on the configuration information of the first base station and the terminal's capability information. This means that the first base station does not support the predetermined service and the terminal does not support the predetermined service in the communication system to which the first base station belongs. Therefore, during the period of establishing the predetermined service for the terminal, the second base station can control the terminal to always be connected to the second base station based on the configuration information of the first base station and the terminal's capability information, so that the predetermined service will not be interrupted when the terminal is performing the predetermined service. For example, during the period of establishing the emergency call service for the terminal, the second base station controls the terminal to always be connected to the second base station based on the aforementioned two types of information, so that the emergency call service will not be interrupted when the terminal is performing the emergency call. Simply put, this means that the call will not be interrupted during the call after the terminal makes an emergency call. Therefore, the second base station can control the terminal to always connect to the second base station based on the pre-defined service identifier, the configuration information of the first base station, and the terminal capability information. In other words, the terminal will not reconnect to the first base station, thus ensuring that the terminal can perform the pre-defined service normally.

[0040] Based on the above discussion, the embodiments of this application can be applied to the following scenario, in which the terminal is a 5G terminal, the first base station includes a 5G base station, the second base station includes a 4G base station, and the predetermined service includes an emergency call service. The terminal is currently connected to the 5G base station, and the 4G base station stores 5G base station configuration information. It can be understood that the 4G base station can determine from the 5G base station configuration information that the 5G base station does not support the emergency call service. Furthermore, since the terminal does not support the emergency call service in 5G, it can be understood that the priority for the 5G terminal to access the 5G base station is higher than the priority to access the 4G base station. Based on this, as follows... Figure 2As shown, when a user initiates an emergency call service through a terminal, the terminal sends a service request for the emergency call service to the 5G base station. Based on the service request, the 5G base station sends a pre-handover request carrying a predetermined service identifier to the 4G base station. The 4G base station prioritizes allocating reserved resources for the terminal's handover based on the predetermined service identifier and returns pre-handover success information to the 5G base station. The 5G base station issues a handover command to the terminal, enabling the terminal to access the 4G base station and send terminal capability information to the 4G base station. It can be understood that the 4G base station can determine from the terminal capability information that the terminal does not support the emergency call service in 5G. Before connecting the emergency call service to the terminal, the 4G base station controls the terminal to always be connected to the 4G base station based on the predetermined service identifier. Furthermore, during the establishment of the emergency call service for the terminal, the 4G base station controls the terminal to always be connected to the 4G base station based on the 5G base station configuration information and the terminal capability information. In other words, the terminal will not reconnect to the 5G base station, ensuring that the terminal can normally conduct the emergency call service. It should be noted that after completing an emergency call, the terminal can reconnect to the 5G base station.

[0041] In summary, the terminal control method in this application embodiment, when applied to the first base station, such as Figure 3 As shown, the method may include, but is not limited to, steps A10 to A20.

[0042] Step A10: When a service request for a pre-booked service is received from a terminal, a pre-handover request carrying a pre-booked service identifier is sent to the second base station. The second base station stores configuration information of the first base station, which is used to characterize whether the first base station supports the pre-booked service.

[0043] Step A20: Upon receiving the pre-handover success information returned by the second base station, a handover command is sent to the terminal to enable the terminal to access the second base station and send terminal capability information. The terminal capability information is used to characterize whether the terminal supports the predetermined service in the communication system to which the first base station belongs.

[0044] When the first base station does not support the pre-booked service and the terminal does not support the pre-booked service in the communication system to which the first base station belongs, the pre-booked service identifier, the first base station configuration information, and the terminal capability information are used to control the terminal to always access the second base station during the process of the second base station processing the pre-booked service for the terminal.

[0045] In some embodiments, step A10 may include, but is not limited to, the following: when a service request for a predetermined service is received from a terminal, a pre-handover request carrying a predetermined service identifier is sent to a second base station according to the handover indication in the service request, so that the second base station can preferentially allocate reserved resources for the handover of the terminal according to the predetermined service identifier.

[0046] In some embodiments, the handover command carries a predetermined service identifier, which is used to instruct the terminal to reconnect to the second base station and carry the predetermined service identifier in the access information when the terminal fails to access the second base station.

[0047] In some embodiments, the first base station stores terminal status information, which is used to characterize the current service status of the terminal. Based on this, after sending a handover command to the terminal, the method may also include, but is not limited to, the following: when the terminal fails to access the second base station and re-accesses the first base station, according to the terminal status information, the terminal is controlled to re-access the second base station and instructed to carry a predetermined service identifier in the access information.

[0048] In some embodiments, the pre-defined service identifier is used to control the terminal to always access the second base station before the second base station connects the pre-defined service to the terminal, and the first base station configuration information and terminal capability information are used to control the terminal to always access the second base station during the period when the second base station establishes the pre-defined service for the terminal.

[0049] In some embodiments, the priority of a terminal accessing a first base station is higher than the priority of accessing a second base station, and the pre-defined service includes an emergency call service.

[0050] The above content can be referred to the preceding discussion for specific implementation, and will not be repeated here for the sake of brevity.

[0051] Furthermore, the terminal control method in this application embodiment, when applied to a second base station, such as... Figure 4 As shown, the method may include, but is not limited to, steps B10 to B20, wherein the second base station stores configuration information of the first base station, and the configuration information of the first base station is used to characterize whether the first base station supports the predetermined service.

[0052] Step B10: When a pre-handover request carrying a predetermined service identifier is received from the first base station, a pre-handover success message is returned to the first base station so that the first base station can send a handover command to the terminal. The handover command is used to enable the terminal to access the second base station and send terminal capability information. The terminal capability information is used to characterize whether the terminal supports the predetermined service in the communication system to which the first base station belongs.

[0053] Step B20: When the first base station does not support the pre-defined service and the terminal does not support the pre-defined service in the communication system to which the first base station belongs, during the process of processing the pre-defined service for the terminal, the terminal is controlled to always access the second base station according to the pre-defined service identifier, terminal capability information and first base station configuration information.

[0054] In some embodiments, step B10 may include, but is not limited to, the following: when a pre-handover request carrying a predetermined service identifier is received from the first base station, reserved resources are preferentially allocated for the handover of the terminal according to the predetermined service identifier, and a pre-handover success message is returned to the first base station.

[0055] In some embodiments, the handover command carries a predetermined service identifier, which is used to instruct the terminal to reconnect to the second base station and carry the predetermined service identifier in the access information when the terminal fails to access the second base station.

[0056] In some embodiments, the first base station stores terminal status information, which is used to characterize the current service status of the terminal; the terminal status information is also used to enable the first base station to control the terminal to reconnect to the second base station and instruct the terminal to carry a predetermined service identifier in the access information when the terminal fails to access the second base station and reconnects to the first base station.

[0057] In some embodiments, step B20 may include, but is not limited to, the following: before connecting the terminal to the predetermined service, controlling the terminal to always access the second base station according to the predetermined service identifier; and during the establishment of the predetermined service for the terminal, controlling the terminal to always access the second base station according to the configuration information of the first base station and the terminal capability information.

[0058] In some embodiments, the priority of a terminal accessing a first base station is higher than the priority of accessing a second base station, and the pre-defined service includes an emergency call service.

[0059] The above content can be referred to the preceding discussion for specific implementation, and will not be repeated here for the sake of brevity.

[0060] This application also provides a base station, such as... Figure 5 As shown, it includes a processor and a memory, the memory being used to store computer programs; the processor being used to execute the computer programs and, when executing the computer programs, to implement any of the terminal control methods provided in the embodiments of this application.

[0061] It should be understood that the processor can be a Central Processing Unit (CPU), but it can also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. Among these, a general-purpose processor can be a microprocessor or any conventional processor.

[0062] The embodiments of this application also provide a computer-readable storage medium storing a computer program, which, when executed by a processor, causes the processor to implement any of the terminal control methods provided in the embodiments of this application.

[0063] Those skilled in the art will understand that all or some of the steps, systems, and 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 can be distributed on a computer-readable storage medium, which may include computer-readable storage media (or non-transitory media) and communication media (or transient media).

[0064] As is known to those skilled in the art, the term computer-readable storage medium 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-readable storage media includes, but is 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 devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, it is 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.

[0065] For example, the computer-readable storage medium may be an internal storage unit of the base station described in the foregoing embodiments, such as the hard disk or memory of the base station. The computer-readable storage medium may also be an external storage device of the base station, such as a plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, etc., equipped on the base station.

[0066] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A terminal control method characterized by comprising: For a first base station, the method includes: When a service request for a pre-defined service is received from a terminal, a pre-switching request carrying a pre-defined service identifier is sent to a second base station. The second base station stores configuration information of a first base station, which is used to characterize whether the first base station supports the pre-defined service. Upon receiving the pre-handover success information returned by the second base station, a handover command is sent to the terminal to enable the terminal to access the second base station and send terminal capability information, wherein the terminal capability information is used to characterize whether the terminal supports the predetermined service in the communication system to which the first base station belongs; Wherein, when the first base station does not support the predetermined service and the terminal does not support the predetermined service in the communication system to which the first base station belongs, the predetermined service identifier, the first base station configuration information, and the terminal capability information are used to control the terminal to always access the second base station during the process of the second base station processing the predetermined service for the terminal.

2. The method of claim 1, wherein, When a service request for a pre-defined service is received from a terminal, sending a pre-handover request carrying a pre-defined service identifier to the second base station includes: When a service request for a predetermined service is received from a terminal, a pre-handover request carrying a predetermined service identifier is sent to a second base station according to the handover indication in the service request, so that the second base station can preferentially allocate reserved resources for the handover of the terminal according to the predetermined service identifier.

3. The method of claim 1, wherein, The handover command carries the predetermined service identifier, which is used to instruct the terminal to reconnect to the second base station and carry the predetermined service identifier in the access information when the terminal fails to access the second base station.

4. The method of claim 1, wherein, The first base station stores terminal status information, which is used to characterize the current service status of the terminal; After sending the handover command to the terminal, the process includes: When the terminal fails to access the second base station and re-accesses the first base station, the terminal is controlled to re-access the second base station according to the terminal status information, and the terminal is instructed to carry the predetermined service identifier in the access information.

5. The method according to any one of claims 1 to 4, characterized in that, The predetermined service identifier is used to control the terminal to always access the second base station before the second base station connects the predetermined service to the terminal. The first base station configuration information and the terminal capability information are used to control the terminal to always access the second base station during the period when the second base station establishes the predetermined service for the terminal.

6. The method according to any one of claims 1 to 4, characterized in that, The terminal has a higher priority to access the first base station than to access the second base station, and the pre-defined service includes emergency call service.

7. A terminal control method characterized by comprising: For a second base station, the second base station stores configuration information of the first base station, the first base station configuration information being used to characterize whether the first base station supports a pre-defined service, the method comprising: When a pre-handover request carrying a predetermined service identifier is received from the first base station, a pre-handover success message is returned to the first base station so that the first base station can send a handover command to the terminal. The handover command is used to enable the terminal to access the second base station and send terminal capability information. The terminal capability information is used to characterize whether the terminal supports the predetermined service in the communication system to which the first base station belongs. If the first base station does not support the predetermined service and the terminal does not support the predetermined service in the communication system to which the first base station belongs, then during the process of processing the predetermined service for the terminal, the terminal is controlled to always access the second base station according to the predetermined service identifier, the terminal capability information and the first base station configuration information.

8. The method of claim 7, wherein, When a pre-handover request carrying a predetermined service identifier is received from the first base station, returning pre-handover success information to the first base station includes: When a pre-handover request carrying a predetermined service identifier is received from the first base station, reserved resources are preferentially allocated for the handover of the terminal according to the predetermined service identifier, and a pre-handover success message is returned to the first base station.

9. The method of claim 7, wherein, The handover command carries the predetermined service identifier, which is used to instruct the terminal to reconnect to the second base station and carry the predetermined service identifier in the access information when the terminal fails to access the second base station.

10. The method of claim 7, wherein, The first base station stores terminal status information, which is used to characterize the current service status of the terminal; The terminal status information is also used so that when the terminal fails to access the second base station and re-accesses the first base station, the first base station can control the terminal to re-access the second base station and instruct the terminal to carry the predetermined service identifier in the access information.

11. The method according to any one of claims 7-10, characterized in that, In the process of processing the predetermined service for the terminal, controlling the terminal to always access the second base station based on the predetermined service identifier, the terminal capability information, and the first base station configuration information includes: Before connecting the terminal to the predetermined service, the terminal is controlled to always be connected to the second base station according to the predetermined service identifier. During the establishment of the predetermined service for the terminal, the terminal is controlled to always access the second base station according to the configuration information of the first base station and the capability information of the terminal.

12. The method according to any one of claims 7-10, characterized in that, The terminal has a higher priority to access the first base station than to access the second base station, and the pre-defined service includes emergency call service.

13. A base station, characterized by Including processor and memory; The memory is used to store computer programs; The processor is configured to execute the computer program and, when executing the computer program, implement the terminal control method as described in any one of claims 1 to 6, or implement the terminal control method as described in any one of claims 7 to 12.

14. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a computer program, and the computer program, when executed by a processor, causes the processor to implement the terminal control method in any one of claims 1 to 6, or the terminal control method in any one of claims 7 to 12.

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