WO2020113520A1

WO2020113520A1 - Connection establishing method, network device, and terminal device

Info

Publication number: WO2020113520A1
Application number: PCT/CN2018/119581
Authority: WO
Inventors: 许阳; 刘建华
Original assignee: Oppo广东移动通信有限公司
Priority date: 2018-12-06
Filing date: 2018-12-06
Publication date: 2020-06-11
Also published as: CN110741681B; CN110741681A

Abstract

Embodiments of the present application relate to a connection establishing method, a network device, and a terminal device. The method comprises: a first network device, upon implementing a first process, transmitting instruction information to a target device, the instruction information being used to instruct the target device to connect, according to a preset condition, a terminal device to a third network device by means of a second process, wherein the target device is either the terminal device or a second network device, the first process comprises connecting the terminal device connected to the first network device to the second network device, and the second process comprises connecting the terminal device connected to the second network device to the third network device. The connection establishing method, the network device, and the terminal device in the embodiments of the present application can be used to improve user experience.

Description

Method for establishing connection, network equipment and terminal equipment

Technical field

This application relates to the field of communications, and in particular, to a method for establishing a connection, a network device, and a terminal device.

Background technique

In the early stage of 5G deployment, the network may not be able to support New Air Voice Bearer (Voice Over New Radio, VoNR), or in the case of network congestion, the 5G network needs to trigger a 5G->4G handover process to allow the 4G network to perform long-term Evolved voice bearer (Voice over Long-Term Evolution, VoLTE), so as to complete user equipment (User Equipment, UE) request for voice establishment. For the Handover process of 5G->4G, there are usually two types: one is that the core network of 5G is unchanged, and the radio access technology (Radio Access Technologies, RAT) is triggered when the UE needs to perform voice, and the RAT access is from the new wireless ( New Radio (NR) becomes Long Term Evolution (LTE), and then performs VoLTE operation; the other is to switch the 5G core network to the 4G core network, and the RAT will also change from NR to LTE, and then perform VoLTE operation.

However, after completing VoLTE voice, there is currently no mechanism that can trigger the UE to quickly return to the 5G network for the purpose of establishing 5G->4G fallback for voice establishment.

Summary of the invention

Embodiments of the present application provide a method, a network device, and a terminal device for establishing a connection, which can improve user experience.

In a first aspect, a method for establishing a connection is provided, which includes: when performing a first process, a first network device sends indication information to a target device, where the indication information is used to instruct the target device to follow preset conditions Connecting the terminal device to the third network device through a second process, where the target device is the terminal device or the second network device, the first process includes: connecting the terminal device connected to the first network device to the third network device Two network devices, the second process includes: connecting the terminal device connected to the second network device to the third network device.

In a second aspect, a method for establishing a connection is provided, which includes: when performing a first process, a second network device receives instruction information sent by the first network device; the second network device according to the instruction information, The terminal device is connected to the third network device through a second process according to a preset condition, wherein the first process includes: the terminal device connected to the first network device is connected to the second network device, and the second process includes : The terminal device connected to the second network device is connected to the third network device.

In a third aspect, a method for establishing a connection is provided, which includes: a terminal device receiving instruction information sent by a first network device while performing a first process; the terminal device according to the instruction information, according to preset conditions Connected to a third network device through a second process, wherein the first process includes: the terminal device connected to the first network device is connected to the second network device, and the second process includes: connected to the second network device The terminal device is connected to the third network device.

According to a fourth aspect, there is provided a network device, configured to execute the method in any one of the first aspect to the second aspect or the respective implementations thereof. Specifically, the terminal device includes a functional module for performing the method in the above-mentioned first aspect or various implementations thereof.

According to a fifth aspect, a terminal device is provided for performing the method in the third aspect or its implementations. Specifically, the network device includes a functional module for performing the method in the third aspect or its implementations.

In a sixth aspect, a network device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in any one of the first to second aspects or the various implementations thereof.

In a seventh aspect, a terminal device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the third aspect or each implementation manner thereof.

In an eighth aspect, a chip is provided for implementing the method in any one of the first to third aspects or the respective implementation manners. Specifically, the chip includes: a processor for calling and running a computer program from the memory, so that the device installed with the chip executes any one of the first aspect to the second aspect described above or its respective implementations method.

In a ninth aspect, a computer-readable storage medium is provided for storing a computer program, which causes the computer to execute the method in any one of the above first to third aspects or various implementations thereof.

According to a tenth aspect, there is provided a computer program product, including computer program instructions, which cause the computer to execute the method in any one of the first to third aspects or their respective implementations.

According to an eleventh aspect, a computer program is provided, which when run on a computer, causes the computer to execute the method in any one of the above first to third aspects or various implementations thereof.

Through the above technical solution, during the process of connecting the terminal device connected to the first network device to the second network device through redirection or switching, the first network device may send indication information to the second network device or terminal device, so that the terminal device You can connect to the third network device from the second network device according to the preset conditions, which can solve the problem that the 5G terminal device returns to the 5G network immediately after completing the specific service when the 5G terminal device falls back to 4G to perform the specific service, so that the user can Use 5G network to the greatest extent to ensure user experience.

BRIEF DESCRIPTION

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

FIG. 2 is a schematic diagram of a method for establishing a connection provided by an embodiment of the present application.

FIG. 3 is another schematic flowchart of a method for establishing a connection according to an embodiment of the present application.

FIG. 4 is another schematic flowchart of a method for establishing a connection provided by an embodiment of the present application.

FIG. 5 is a schematic block diagram of a network device provided by an embodiment of the present application.

6 is another schematic block diagram of a network device provided by an embodiment of the present application.

7 is a schematic block diagram of a terminal device provided by an embodiment of the present application.

8 is a schematic block diagram of a communication device according to an embodiment of the present application.

9 is a schematic block diagram of a chip provided by an embodiment of the present application.

10 is a schematic diagram of a communication system provided by an embodiment of the present application.

detailed description

The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile (GSM) system, Code Division Multiple Access (CDMA) system, Broadband Code Division Multiple Access (Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (Time Division Duplex, TDD), Universal Mobile Communication System (Universal Mobile Telecommunication System, UMTS), Global Interoperability for Microwave Access (WiMAX) communication system or 5G system, etc.

Exemplarily, the communication system 100 applied in the embodiment of the present application is shown in FIG. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, terminal). The network device 110 can provide communication coverage for a specific geographic area, and can communicate with terminal devices located within the coverage area. Optionally, the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, or an evolved base station in an LTE system (Evolutional Node B, eNB or eNodeB), or a wireless controller in the Cloud Radio Access Network (CRAN), or the network equipment can be a mobile switching center, a relay station, an access point, an in-vehicle device, Wearable devices, hubs, switches, bridges, routers, network-side devices in 5G networks or network devices in future public land mobile networks (Public Land Mobile Network, PLMN), etc.

The communication system 100 also includes at least one terminal device 120 within the coverage of the network device 110. As used herein, "terminal equipment" includes, but is not limited to, connections via wired lines, such as via Public Switched Telephone Networks (PSTN), Digital Subscriber Lines (DSL), digital cables, and direct cable connections ; And/or another data connection/network; and/or via wireless interfaces, such as for cellular networks, wireless local area networks (Wireless Local Area Network, WLAN), digital TV networks such as DVB-H networks, satellite networks, AM- FM broadcast transmitter; and/or another terminal device configured to receive/transmit communication signals; and/or Internet of Things (IoT) equipment. A terminal device configured to communicate through a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal", or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; Personal Communication Systems (PCS) terminals that can combine cellular radiotelephones with data processing, fax, and data communication capabilities; can include radiotelephones, pagers, Internet/internal PDAs with networked access, web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palm-type receivers or others including radiotelephone transceivers Electronic device. Terminal equipment can refer to access terminal, user equipment (User Equipment, UE), user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or User device. Access terminals can be cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital processing (Personal Digital Assistant (PDA), wireless communication Functional handheld devices, computing devices, or other processing devices connected to a wireless modem, in-vehicle devices, wearable devices, terminal devices in a 5G network, or terminal devices in a future-evolving PLMN, etc.

Optionally, terminal equipment 120 may perform terminal direct connection (Device to Device, D2D) communication.

Alternatively, the 5G system or 5G network may also be referred to as a New Radio (NR) system or NR network.

FIG. 1 exemplarily shows one network device and two terminal devices. Optionally, the communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within the coverage area. This application The embodiment does not limit this.

Optionally, the communication system 100 may further include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.

It should be understood that the devices with communication functions in the network/system in the embodiments of the present application may be referred to as communication devices. Taking the communication system 100 shown in FIG. 1 as an example, the communication device may include a network device 110 and a terminal device 120 with a communication function, and the network device 110 and the terminal device 120 may be the specific devices described above, which will not be repeated here. The communication device may also include other devices in the communication system 100, such as network controllers, mobility management entities, and other network entities, which are not limited in the embodiments of the present application.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is just an association relationship that describes an associated object, indicating that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist at the same time, exist alone B these three cases. In addition, the character "/" in this article generally indicates that the related objects before and after are in an "or" relationship.

FIG. 2 is a schematic flowchart of a method 200 for establishing a connection according to an embodiment of the present application. The method 200 may be performed by a network device. For convenience of description, the network device is referred to herein as a first network device. A network device may be the network device shown in FIG. As shown in FIG. 2, the method 200 includes: S210. When the first network device executes the first process, it sends instruction information to the target device, where the instruction information is used to instruct the target device to pass the terminal device according to a preset condition. The second process is connected to a third network device, where the target device is the terminal device or the second network device.

It should be understood that the first process includes: connecting the terminal device connected to the first network device to the second network device. Specifically, in the first process, the terminal device connected to the first network device may be connected to the second network device by way of redirection or switching. Wherein, the redirection method may include: the terminal device returns to the idle state by releasing the connection with the first network device, and then connects with the second network device through a reselection mechanism. The switching method may include: when the terminal device and the first network device maintain a radio resource control (Radio Resource Control, RRC) connection, switching from the first network device to the second network device.

Similarly, the second process includes: connecting the terminal device connected to the second network device to the third network device. Specifically, in this second process, the terminal device connected to the second network device may be connected to the third network device by way of redirection or switching. Wherein, the redirection method may include: the terminal device returns to the idle state by releasing the connection with the second network device, and then connects to the third network device through the reselection mechanism. The switching method may include: when the terminal device maintains the RRC connection with the first network device, switching from the second network device to the third network device.

In the embodiment of the present application, the first network device, the second network device, and the third network device may be any network devices, and for any two of the network devices, at least one of the following conditions may be satisfied: corresponding to the same Or different core network types, corresponding to the same or different PLMNs, corresponding to the same or different network slices and corresponding to the same or different access standards. For example, the first network device and the third network device may be the same network device, and the second network device is another different network device, where the first network device and the second network device correspond to different core networks. For another example, the first network device and the third network device may correspond to the same access mechanism, and the first network device and the second network device belong to different access mechanisms, where the first network device and the second network device The access mechanism of is NR, and the access mechanism of the second network device is LTE. For another example, all three network devices may correspond to the same network slice. The embodiments of the present application are not limited to this.

In the embodiment of the present application, when the first network device and the terminal device execute the first process, the first network device may send indication information to the target device. The indication information is used to instruct the target device to perform The terminal device is connected to the third network device through the second process. Specifically, the indication information may include the preset condition, or the indication information may also include other information, for example, the other information may be information that can determine the preset condition, and the embodiments of the present application are not limited thereto.

Optionally, as an embodiment, the indication information may include an execution purpose of the first network device performing the first process. Specifically, the execution purpose may be that the terminal device executes the first specific service on the second network device. Wherein, the first specific service may include at least one of voice service, video service and emergency call service.

Optionally, the target device may determine the preset condition corresponding to the execution purpose in the indication information according to the correspondence between the execution purpose and the preset condition. For example, assuming that the execution purpose is that the terminal device executes the first specific service on the second network device, the preset condition corresponding thereto may be related to the first specific service, for example, the preset condition may include: After the device performs the first specific service, the target device connects the terminal device to the third network device through the second process; or, the preset condition may further include: the terminal device performs the first specific service ends Afterwards, and when the terminal device needs to perform a second specific service, the target device connects the terminal device to the third network device through the second process, where the second specific service may include a voice service, a video service, and an emergency call service At least one of them.

Optionally, as an embodiment, the indication information may also include preset conditions. Specifically, the target receives the indication information, and connects the terminal device to the third network device through the second process according to the preset conditions therein. Wherein, the preset condition may include: connecting the terminal device to the third network device through the second process at a preset time and/or preset location, and then the target device arrives at the preset according to the preset condition At the time and/or preset location, the target device connects the terminal device to the third network device.

Or, the preset condition may further include: after the terminal device finishes executing the first specific service on the second network device, and/or, if the terminal device needs to perform the second specific service, the terminal device Connect to the third network device through the second process, wherein the first specific service may include at least one of voice service, video service and emergency call service, and the second specific service may also include voice service, video service and emergency At least one of the calling services.

For example, it is assumed that the preset condition includes: after the terminal device performs the first specific service on the second network device, connecting the terminal device to the third network device through the second process, wherein the first The specific service may be a voice service. The target device performs the voice service on the second network device according to the preset condition, and when the voice service ends, the target device changes the terminal device from the second network device to the third network device.

For another example, assume that the preset condition includes: in a case where a terminal device connected to a second network device needs to perform a second specific service, connect the terminal device to the third network device through the second process, the second The service may be an emergency call service. According to the preset condition, if the terminal device currently connected to the second network device needs to perform an emergency call service, the target device changes the terminal device from the second network device to the third network device.

For another example, assume that the preset condition includes after the terminal device performs the first specific service on the second network device and the terminal device needs to perform the second specific service, the terminal device passes the second device The process is connected to the third network device, wherein the first specific service may be a voice service, and the second service may be an emergency call service. The terminal device connected to the second network device is performing a voice service. When the terminal device needs to perform an emergency call service after the voice service ends, the target device changes the terminal device from the second network device to the third network device .

In the embodiment of the present application, the above target device may be a second network device or a terminal device, which will be described separately below.

Optionally, as an embodiment, for the case where the target device is the terminal device, that is, the first network device sends instruction information to the terminal device when performing the first process with the terminal device, so that the terminal device can The indication information is connected to the third network device through the second process according to preset conditions. Specifically, the sending of the indication information by the first network device to the terminal device may include: the first network device sends the indication information to the terminal device directly or indirectly.

Optionally, for the first network device to directly send instruction information to the terminal device, for example, assume that the first process is: the terminal device connected to the first network device is connected to the second network device by redirection, then The first network device may send an RRC connection release message to the terminal device, so that the terminal device disconnects the RRC connection with the first network device according to the RRC connection release message and returns to the idle state, where the RRC connection release message may Including instruction information in the embodiments of the present application. For another example, assume that the first process is: the terminal device connected to the first network device is connected to the second network device by switching, and the first network device may send a switching request message to the terminal device to facilitate the terminal The device switches from the first network device to the second network device according to the handover request message, where the handover request message may also include the indication information in the embodiment of the present application.

Optionally, the first network device indirectly sends instruction information to the terminal device, that is, the first network device forwards the instruction information to the terminal device through other devices, for example, the first network device sends the second network device The indication information, so that the second network device forwards the indication information to the terminal device. Specifically, the sending of the indication information by the first network device to the second network device may include: the first network device sends the indication information to the second network device through the direct connection port or through the core network device. For example, the first network device sends instruction information to the second network device through the Xn interface; for another example, the first network device transparently transmits the instruction information to the second network device through the core network device through the N2 interface.

The second network device receives the instruction information and sends the instruction information to the terminal device. Specifically, for ease of explanation, it is assumed that the second network device receives the indication information sent by the first network device as the first indication information, and the second network device sends the second indication information to the terminal device, where the first The indication information may be the same as the second indication information, that is, the second network device may directly send the received indication information to the terminal device; or, the second indication information may also be determined by the second network device according to the first indication information Both the first indication information and the second indication information are used to instruct the terminal device to connect to the third network device through the second process according to a preset condition.

In this embodiment, the target device is a terminal device, that is, the terminal device receives the indication information sent by the first network device, and according to a preset condition, the terminal device connects to the third network device through the second process. Specifically, the terminal device changes from the first network device to connect to the second network device through the first process, and according to the instruction information, under preset conditions, the terminal device needs to connect to the third network device through the second process. Among them, the second process includes: the terminal device is connected to the third network device through redirection, that is, the terminal device and the second network device are returned to the idle state by releasing the connection, and then connected to the third network through the reselection mechanism device.

Optionally, as another embodiment, the target device may also be a second network device, that is, the first network device sends instruction information to the second network device when the first process is performed, so as to facilitate the second network According to the instruction information, the device connects the terminal device to the third network device through the second process according to a preset condition. Specifically, the first network device sending the indication information to the second network device may include: the first network device directly or indirectly sends the indication information to the second network device.

Optionally, for the first network device to directly send the indication information to the second network device, the first network device may send the indication information to the second network device through a direct connection port. For example, assuming that the terminal device is switched from the first network device to the second network device by way of handover, the first network device may directly send instruction information to the second network device through the Xn interface.

Optionally, the first network device indirectly sends the indication information to the second network device, that is, the first network device forwards the indication information to the terminal device through other devices. Optionally, the first network device may send indication information to the second network device through the core network device. For example, the first network device transparently transmits the indication information to the second network device through the core network device through the N2 interface.

Alternatively, the first network device may also send the indication information to the second network device through the terminal device. For example, assuming that the first process is: the terminal device connected to the first network device is connected to the second network device through redirection, then the first network device may send an RRC connection release message to the terminal device to facilitate the The terminal device disconnects the RRC connection with the first network device according to the RRC connection release message and returns to the idle state, where the RRC connection release message may include the indication information in the embodiment of the present application; after the terminal device returns to the idle state Can be connected to the second network device through a reselection mechanism, the terminal device can send an RRC connection establishment request message (RRC Connection Establishment Request) to the second network device, requesting to establish an RRC connection with the second network device, where the RRC connection The establishment request message may include indication information sent by the first network device, or the RRC connection establishment request message may include another indication information determined by the terminal device according to the indication information sent by the first network device, so that the second network device receives the The instruction information connects the terminal device to the third network device through the second process according to a preset condition.

For another example, assume that the first process is: the terminal device connected to the first network device is connected to the second network device by switching, and the first network device may send a switching request message to the terminal device to facilitate the terminal The device switches from the first network device to the second network device according to the handover request message, where the handover request message may also include the indication information in the embodiment of the present application; when the terminal device completes the handover process, The network device sends a handover complete message (Handover Complete), and the handover complete message may include indication information sent by the first network device, or the handover completion message may also include another terminal device determines according to the indication information sent by the first network device. The instruction information, so that the second network device receives the instruction information, and connects the terminal device to the third network device through the second process according to a preset condition.

The second network device receives the indication information, and connects the terminal device to the third network device according to a preset condition through a second process, wherein the second process is: the terminal device connected to the second network device is switched To connect to the third network device.

For example, assuming that the preset condition indicated by the indication information is: after the terminal device completes the first specific service on the second network device, the terminal device is connected to the third network device, and the second network device follows the preset condition, Before the terminal device performs the first specific service, the terminal device will not be migrated, but after the first specific service ends, the terminal device is switched to the third network device.

For example, the first specific service performed by the terminal device is a voice service, and the second network device belongs to an LTE network. After the terminal device ends the voice service, the second network device allows the terminal device to return to the 5G network and connect The third network device to the 5G network.

Therefore, in the method for establishing a connection according to an embodiment of the present application, during a process in which a terminal device connected to a first network device is connected to a second network device through redirection or switching, the first network device may The terminal device sends instruction information, so that the terminal device can connect to the third network device from the second network device according to the preset condition, which can solve the situation that the 5G terminal device falls back to 4G to perform a specific service, immediately after completing the specific service Return to the problem of 5G network, so that users can use the 5G network to the greatest extent, thus ensuring the user experience.

In the above, the method for establishing a connection according to an embodiment of the present application is described in detail from the perspective of a first network device with reference to FIGS. 1 to 2, and the following will refer to FIGS. 3 to 4 from a second network device and a terminal device, respectively Describes the method for establishing a connection according to an embodiment of the present application.

FIG. 3 shows a schematic flowchart of a method 300 for establishing a connection according to an embodiment of the present application. The method 300 may be performed by a network device, for example, the network device shown in FIG. 1, specifically, to facilitate distinction , Here the network device is called a second network device. As shown in FIG. 3, the method 300 includes: S310. When performing the first process, the second network device receives the indication information sent by the first network device; the second network device according to the indication information, according to preset conditions Connecting the terminal device to the third network device through a second process, wherein the first process includes: connecting the terminal device connected to the first network device to the second network device, and the second process includes: connecting with the first The terminal device connected to the second network device is connected to the third network device.

Optionally, as an embodiment, the first process includes: the terminal device connected to the first network device is connected to the second network device through redirection or switching, and/or the second process includes: The terminal device connected to the second network device is connected to the third network device through handover.

Optionally, as an embodiment, the indication information includes an execution purpose of the first network device to execute the first process.

Optionally, as an embodiment, the method 300 further includes: the second network device determines the preset condition corresponding to the execution purpose.

Optionally, as an embodiment, the execution purpose is: the terminal device executes the first specific service on the second network device.

Optionally, as an embodiment, the indication information includes the preset condition.

Optionally, as an embodiment, the preset condition includes: the second network device connects the terminal device to the third network device through the second process at a preset time and/or preset location.

Optionally, as an embodiment, the preset condition includes: after the terminal device finishes executing the first specific service on the second network device, and/or, when the terminal device needs to execute the second specific service , Connect the terminal device to the third network device through the second process.

Optionally, as an embodiment, the first specific service includes at least one of the following: voice service, video service, and emergency call service.

Optionally, as an embodiment, the second network device receives the indication information sent by the first network device when performing the first process, including: the second network device executes the first process, Receiving the indication information sent by the first network device through a direct connection port or a core network device, where the first process includes: switching the terminal device connected to the first network device to connect to the second network device.

Optionally, as an embodiment, the second network device receives the indication information sent by the first network device when performing the first process, including: the second network device executes the first process, Receiving the instruction information sent by the terminal device, where the instruction information is sent by the terminal device under the condition that the first process is performed by the first network device.

Optionally, as an embodiment, the second network device receives the indication information sent by the terminal device when performing the first process, including: the second network device receives the terminal when performing the first process The RRC connection establishment request message or the handover completion message sent by the device. The RRC connection establishment request message or the handover completion message includes the indication information.

Optionally, as an embodiment, the first network device and the third network device satisfy at least one of the following conditions: corresponding to the same access standard, corresponding to the same PLMN, corresponding to the same core network type, and corresponding to the same network slice .

Optionally, as an embodiment, there are at least two network devices in the first network device, the second network device, and the third network device that satisfy at least one of the following conditions: corresponding to different core network types, corresponding to different PLMNs , Corresponding to different network slices and corresponding to different access standards.

It should be understood that the first network device in the method 300 corresponds to the first network device in the method 200, the second network device in the method 300 corresponds to the second network device in the method 200, and the third in the method 300 The network device corresponds to the third network device in method 200, and the terminal device in method 300 corresponds to the terminal device in method 200. For the sake of brevity, no further description is provided here.

Therefore, in the method for establishing a connection according to an embodiment of the present application, during a process in which a terminal device connected to a first network device is connected to a second network device through redirection or switching, the first network device may send to the second network device Instruction information, so that the second network device can connect the terminal device from the second network device to the third network device according to the preset condition, which can solve the situation that the 5G terminal device falls back to 4G to perform the specific service, after completing the specific service The problem of returning to the 5G network immediately allows users to use the 5G network to the greatest extent, thereby ensuring the user experience.

FIG. 4 shows a schematic flowchart of a method 400 for establishing a connection according to an embodiment of the present application. The method 400 may be executed by a terminal device, for example, any terminal device shown in FIG. 1. As shown in FIG. 4, the method 400 includes: S410. The terminal device receives the indication information sent by the first network device when the first process is performed; the terminal device passes the second process according to the preset information according to the preset information Connected to a third network device, wherein the first process includes: the terminal device connected to the first network device is connected to the second network device, and the second process includes: the terminal device connected to the second network device Connect to the third network device.

Optionally, as an embodiment, the first process includes: the terminal device connected to the first network device is connected to the second network device through redirection or switching, and/or the second process includes: The terminal device connected to the second network device is connected to the third network device through redirection.

Optionally, as an embodiment, the method 400 further includes: the terminal device determines the preset condition corresponding to the execution purpose.

Optionally, as an embodiment, the preset condition includes: the terminal device is connected to the third network device through the second process at a preset time and/or preset location.

Optionally, as an embodiment, the preset condition includes: after the terminal device finishes executing the first specific service on the second network device, and/or, when the terminal device needs to execute the second specific service , The terminal device is connected to the third network device through the second process.

Optionally, as an embodiment, the terminal device receiving the indication information sent by the first network device when performing the first process includes: the terminal device receiving the first message when performing the first process The RRC connection release message or the handover request message sent by the network device. The RRC connection release message or the handover request message includes the indication information.

Optionally, as an embodiment, the terminal device receives the indication information sent by the first network device when the first process is performed, including: the terminal device receives the second message when the first process is performed The indication information sent by the network device, the indication information being sent by the second network device under the condition that the first process is performed by the first network device, the first process including: the connection with the first network device The terminal device switches to connect with the second network device.

It should be understood that the first network device in the method 400 corresponds to the first network device in the method 200, the second network device in the method 400 corresponds to the second network device in the method 200, and the third in the method 400 The network device corresponds to the third network device in method 200, and the terminal device in method 400 corresponds to the terminal device in method 200. For the sake of brevity, no further description is provided here.

Therefore, in the method for establishing a connection according to an embodiment of the present application, in a process in which a terminal device is redirected or switched from a connection with a first network device to a connection with a second network device, the first network device may report to the terminal The device sends instruction information, so that the terminal device can connect to the third network device from the second network device according to the preset condition, which can solve the case that the 5G terminal device returns to 4G to perform a specific service, and returns immediately after completing the specific service The problem of 5G network enables users to use the 5G network to the greatest extent, thereby ensuring the user experience.

It should be understood that in various embodiments of the present application, the size of the sequence numbers of the above processes does not mean that the execution order is sequential, and the execution order of each process should be determined by its function and inherent logic, and should not be applied to the embodiments of the present application The implementation process constitutes no limitation.

In addition, the term "and/or" in this article is just an association relationship that describes the related objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist at the same time, There are three cases of B alone. In addition, the character "/" in this article generally indicates that the related objects before and after are in an "or" relationship.

The method for establishing a connection according to an embodiment of the present application is described in detail above with reference to FIGS. 1 to 4, and the network device and terminal device according to an embodiment of the present application will be described below with reference to FIGS. 5 to 10.

As shown in FIG. 5, the network device 500 according to an embodiment of the present application includes: a processing unit 510 and a transceiver unit 520. Specifically, the transceiver unit 520 is used to: when the processing unit 510 executes the first process, The device sends instruction information, which is used to instruct the target device to connect the terminal device to the third network device through a second process according to a preset condition, where the target device is the terminal device or the second network device, the first The process includes: connecting the terminal device connected to the network device 500 to the second network device, and the second process includes connecting the terminal device connected to the second network device to the third network device.

Optionally, as an embodiment, the first process includes: connecting the terminal device connected to the network device 500 to the second network device through redirection or switching, and/or the second process includes: The terminal device connected to the second network device is connected to the third network device through redirection or switching.

Optionally, as an embodiment, the indication information includes an execution purpose of the network device 500 to execute the first process.

Optionally, as an embodiment, the execution purpose is used for the target device to determine the corresponding preset condition.

Optionally, as an embodiment, the preset condition includes: connecting the terminal device to the third network device through the second process at a preset time and/or preset location.

Optionally, as an embodiment, the target device is the terminal device, and the transceiver unit 520 is configured to send the indication information to the terminal device, and the indication information is used to instruct the terminal device to pass the second device according to a preset condition. The process is connected to the third network device.

Optionally, as an embodiment, the transceiver unit 520 is configured to send the indication information to the second network device, and the second network device is used to send the indication information to the terminal device. The first process includes: The terminal device connected to the network device 500 switches to connect to the second network device.

Optionally, as an embodiment, the second process includes: after the terminal device connected to the second network device performs connection release and enters an idle state, it connects to the third network device through a reselection mechanism.

Optionally, as an embodiment, the target device is the second network device, and the transceiver unit 520 is configured to: when the processing unit 510 executes the first process, send the indication information to the second network device Where the instruction information is used to instruct the second network device to connect the terminal device to the third network device through the second process according to a preset condition.

Optionally, the first process includes: switching the terminal device connected to the network device 500 to connect to the second network device.

Optionally, as an embodiment, the transceiver unit 520 is configured to send the indication information to the terminal device, and the terminal device is used to send the indication information to the second network device.

Optionally, as an embodiment, the second process includes: the terminal device connected to the second network device is connected to the third network device through handover.

Optionally, as an embodiment, the transceiver unit 520 is configured to send an RRC connection release message or a handover request message to the terminal device, where the RRC connection release message or the handover request message includes the indication information.

Optionally, as an embodiment, the transceiver unit 520 is configured to: send the indication information to the second network device through a direct connection port, or send the indication information to the second network device through the core network device.

Optionally, as an embodiment, the network device 500 and the third network device satisfy at least one of the following conditions: corresponding to the same access standard, corresponding to the same PLMN, corresponding to the same core network type, and corresponding to the same network slice.

Optionally, as an embodiment, at least two network devices in the network device 500, the second network device, and the third network device satisfy at least one of the following conditions: corresponding to different core network types, corresponding to different PLMNs, Corresponding to different network slices and corresponding to different access standards.

It should be understood that the network device 500 according to an embodiment of the present application may correspond to performing the method 200 in the embodiment of the present application, and the above and other operations and/or functions of each unit in the network device 500 are respectively for realizing FIGS. 1 to 4 The corresponding process of the first network device in each method in FIG. 2 will not be repeated here for brevity.

Therefore, the network device in the embodiment of the present application may send instruction information to the second network device or the terminal device during the process that the terminal device connected to the second network device is connected to the second network device through redirection or switching, so that the terminal device can Connect to the third network device from the second network device according to the preset conditions, which can solve the problem that the 5G terminal device returns to the 5G network immediately after completing the specific service when the 5G terminal device falls back to 4G to perform the specific service, so that the user can maximize Use 5G network to a certain extent to ensure user experience.

As shown in FIG. 6, the network device 600 according to an embodiment of the present application includes: a processing unit 610 and a transceiver unit 620. Specifically, the transceiver unit 620 is configured to: when the first process is performed, receive a transmission from the first network device Indication information; the processing unit 610 is configured to: according to the indication information, connect the terminal device to the third network device through a second process according to a preset condition, wherein the first process includes: connecting to the first network device The terminal device is connected to the network device 600, and the second process includes: the terminal device connected to the network device 600 is connected to the third network device.

Optionally, as an embodiment, the first process includes: connecting the terminal device connected to the first network device to the network device 600 through redirection or switching, and/or, the second process includes: and The terminal device connected to the network device 600 is connected to the third network device through handover.

Optionally, as an embodiment, the processing unit 610 is further configured to: determine the preset condition corresponding to the execution purpose.

Optionally, as an embodiment, the execution purpose is that the terminal device executes the first specific service on the network device 600.

Optionally, as an embodiment, the preset condition includes: the network device 600 connects the terminal device to the third network device through the second process at a preset time and/or preset location.

Optionally, as an embodiment, the preset condition includes: after the terminal device performs the first specific service on the network device 600, and/or when the terminal device needs to perform the second specific service, Connect the terminal device to the third network device through the second process.

Optionally, as an embodiment, the transceiving unit 620 is configured to: when the first process is performed, receive the indication information sent by the first network device through the direct connection port or the core network device, where the first A process includes: the terminal device connected to the first network device switches to connect to the network device 600.

Optionally, as an embodiment, the transceiving unit 620 is configured to: when the first process is performed, receive the indication information sent by the terminal device, where the indication information is the case where the terminal device is performing the first process To receive the first network device.

Optionally, as an embodiment, the transceiving unit 620 is configured to: when the first process is performed, receive an RRC connection establishment request message or a handover completion message sent by the terminal device, the RRC connection establishment request message or a handover completion message Include the instructions.

Optionally, as an embodiment, there are at least two network devices in the first network device, the network device 600, and the third network device that satisfy at least one of the following conditions: corresponding to different core network types, corresponding to different PLMNs, Corresponding to different network slices and corresponding to different access standards.

It should be understood that the network device 600 according to an embodiment of the present application may correspond to performing the method 300 in the embodiment of the present application, and the above and other operations and/or functions of each unit in the network device 600 are respectively for realizing FIGS. 1 to 4 The corresponding process of the second network device in each method in FIG. 2 will not be repeated here for brevity.

Therefore, in the network device according to the embodiment of the present application, in the process that the terminal device connected to the first network device is connected to the network device through redirection or switching, the first network device may send indication information to the network device so that the network The device can connect the terminal device from the second network device to the third network device according to a preset condition, which can solve the problem that the 5G terminal device returns to the 5G network immediately after completing the specific service when the specific service is dropped back to 4G The user can use the 5G network to the maximum extent, thereby ensuring the user experience.

As shown in FIG. 7, the terminal device 700 according to an embodiment of the present application includes: a processing unit 710 and a transceiving unit 720. Specifically, the transceiving unit 720 is configured to: when the first process is performed, receive a transmission from the first network device Indication information; the processing unit 710 is configured to: according to the indication information, connect to a third network device through a second process according to a preset condition, wherein the first process includes: the terminal device connected to the first network device Connected to the second network device, the second process includes: the terminal device connected to the second network device is connected to the third network device.

Optionally, as an embodiment, the first process includes: connecting the terminal device connected to the first network device to the second network device through redirection or switching, and/or the second process includes: The terminal device connected to the second network device is connected to the third network device through redirection.

Optionally, as an embodiment, the processing unit 710 is further configured to: determine the preset condition corresponding to the execution purpose.

Optionally, as an embodiment, the execution purpose is that the terminal device executes the first specific service on the second network device.

Optionally, as an embodiment, the transceiving unit 720 is configured to: when the first process is performed, receive an RRC connection release message or a handover request message sent by the first network device, the RRC connection release message or the The handover request message includes the indication information.

Optionally, as an embodiment, the transceiver unit 720 is configured to: when the first process is performed, receive the indication information sent by the second network device, where the indication information is that the second network device is performing the Received by the first network device in the case of the first process, the first process includes: switching the terminal device connected to the first network device to connect to the second network device.

It should be understood that the terminal device 700 according to an embodiment of the present application may correspond to performing the method 400 in the embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the terminal device 700 are respectively for realizing FIGS. 1 to 4 The corresponding process of the terminal device in each method in the method will not be repeated here for brevity.

Therefore, the terminal device in the embodiment of the present application may receive the indication information sent by the first network device during the process of changing from connecting with the first network device to connecting to the second network device through redirection or switching, so that The terminal device can connect to the third network device from the second network device according to the preset conditions, which can solve the problem that the 5G terminal device returns to the 5G network immediately after completing the specific service when the specific service is dropped back to 4G, so that Users can use the 5G network to the greatest extent, thus ensuring the user experience.

FIG. 8 is a schematic structural diagram of a communication device 800 provided by an embodiment of the present application. The communication device 800 shown in FIG. 8 includes a processor 810, and the processor 810 can call and run a computer program from the memory to implement the method in the embodiments of the present application.

Optionally, as shown in FIG. 8, the communication device 800 may further include a memory 820. The processor 810 can call and run a computer program from the memory 820 to implement the method in the embodiments of the present application.

The memory 820 may be a separate device independent of the processor 810, or may be integrated in the processor 810.

Optionally, as shown in FIG. 8, the communication device 800 may further include a transceiver 830, and the processor 810 may control the transceiver 830 to communicate with other devices, specifically, may send information or data to other devices, or receive other Information or data sent by the device.

Among them, the transceiver 830 may include a transmitter and a receiver. The transceiver 830 may further include antennas, and the number of antennas may be one or more.

Optionally, the communication device 800 may specifically be a network device according to an embodiment of the present application, and the communication device 800 may implement the corresponding process implemented by the network device in each method of the embodiment of the present application. .

Optionally, the communication device 800 may specifically be a mobile terminal/terminal device according to an embodiment of the present application, and the communication device 800 may implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, for simplicity , Will not repeat them here.

9 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 900 shown in FIG. 9 includes a processor 910, and the processor 910 can call and run a computer program from the memory to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 9, the chip 900 may further include a memory 920. The processor 910 can call and run a computer program from the memory 920 to implement the method in the embodiments of the present application.

The memory 920 may be a separate device independent of the processor 910, or may be integrated in the processor 910.

Optionally, the chip 900 may further include an input interface 930. The processor 910 can control the input interface 930 to communicate with other devices or chips. Specifically, it can obtain information or data sent by other devices or chips.

Optionally, the chip 900 may further include an output interface 940. The processor 910 can control the output interface 940 to communicate with other devices or chips. Specifically, it can output information or data to other devices or chips.

Optionally, the chip may be applied to the network device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, no further description is provided here.

Optionally, the chip can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiments of the present application. No longer.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as system-on-chips, system chips, chip systems, or system-on-chip chips.

10 is a schematic block diagram of a communication system 1000 provided by an embodiment of the present application. As shown in FIG. 10, the communication system 1000 includes a terminal device 1010 and a network device 1020.

The terminal device 1010 may be used to implement the corresponding function implemented by the terminal device in the above method, and the network device 1020 may be used to implement the corresponding function implemented by any network device in the above method, that is, the network device 1020 It may be any one of the first network device, the second network device, and the third network device, and for the sake of brevity, no further description is provided here.

It should be understood that the processor in the embodiment of the present application may be an integrated circuit chip, which has signal processing capabilities. In the implementation process, each step of the foregoing method embodiment may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software. The above-mentioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an existing programmable gate array (Field Programmable Gate Array, FPGA), or other available Programming logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application may be implemented or executed. The general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied and executed by a hardware decoding processor, or may be executed and completed by a combination of hardware and software modules in the decoding processor. The software module may be located in a mature storage medium in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, and registers. The storage medium is located in the memory. The processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory may be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electronically Erasable programmable read only memory (Electrically, EPROM, EEPROM) or flash memory. The volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (Synchlink DRAM, SLDRAM) ) And direct memory bus random access memory (Direct Rambus RAM, DR RAM). It should be noted that the memories of the systems and methods described herein are intended to include, but are not limited to these and any other suitable types of memories.

It should be understood that the foregoing memory is exemplary but not limiting, for example, the memory in the embodiments of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous) DRAM (SDRAM), double data rate synchronous dynamic random access memory (double data) SDRAM (DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is to say, the memories in the embodiments of the present application are intended to include but are not limited to these and any other suitable types of memories.

Embodiments of the present application also provide a computer-readable storage medium for storing computer programs.

Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding process implemented by the network device in each method of the embodiments of the present application. No longer.

Optionally, the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiments of the present application For the sake of brevity, I will not repeat them here.

An embodiment of the present application also provides a computer program product, including computer program instructions.

Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. Repeat again.

Optionally, the computer program product may be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiments of the present application, For brevity, I will not repeat them here.

An embodiment of the present application also provides a computer program.

Optionally, the computer program can be applied to the network device in the embodiments of the present application. When the computer program runs on the computer, the computer is allowed to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. , Will not repeat them here.

Optionally, the computer program can be applied to the mobile terminal/terminal device in the embodiments of the present application. When the computer program runs on the computer, the computer is implemented by the mobile terminal/terminal device in performing various methods of the embodiments of the present application For the sake of brevity, I will not repeat them here.

Those of ordinary skill in the art may realize that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in hardware or software depends on the specific application of the technical solution and design constraints. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

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

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a division of logical functions. In actual implementation, there may be other divisions, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.

If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present application essentially or part of the contribution to the existing technology or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to enable a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .

The above is only the specific implementation of this application, but the scope of protection of this application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in this application. It should be covered by the scope of protection of this application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method for establishing a connection, characterized in that it includes:

When performing the first process, the first network device sends instruction information to the target device, where the instruction information is used to instruct the target device to connect the terminal device to the third network device through the second process according to a preset condition,

Wherein, the target device is the terminal device or the second network device,

The first process includes: connecting the terminal device connected to the first network device to the second network device,

The second process includes connecting the terminal device connected to the second network device to the third network device.
The method according to claim 1, wherein the first process includes: connecting the terminal device connected to the first network device to the second network device through redirection or switching, and/or or

The second process includes: connecting the terminal device connected to the second network device to the third network device through redirection or switching.
The method according to claim 1 or 2, wherein the indication information includes an execution purpose of the first network device to execute the first process.
The method according to claim 3, wherein the execution purpose is used by the target device to determine the corresponding preset condition.
The method according to claim 3 or 4, wherein the execution purpose is that the terminal device executes the first specific service on the second network device.
The method according to any one of claims 1 to 5, wherein the indication information includes the preset condition.
The method according to any one of claims 1 to 6, wherein the preset condition includes:

At a preset time and/or preset location, connect the terminal device to the third network device through the second process.
The method according to any one of claims 1 to 6, wherein the preset condition includes:

After the terminal device performs the first specific service on the second network device, and/or the terminal device needs to perform the second specific service, pass the terminal device through the second process Connected to the third network device.
The method according to claim 5 or 8, wherein the first specific service comprises at least one of the following: voice service, video service and emergency call service.
The method according to any one of claims 1 to 9, wherein the target device is the terminal device,

The sending instruction information to the target device includes:

The first network device sends the instruction information to the terminal device, where the instruction information is used to instruct the terminal device to connect to the third network device through the second process according to a preset condition.
The method according to claim 10, wherein the first network device sending the indication information to the terminal device comprises:

The first network device sends the indication information to the second network device, and the second network device is used to send the indication information to the terminal device. The first process includes: communicating with the first The terminal device connected to the network device switches to connect to the second network device.
The method according to claim 10 or 11, wherein the second process includes: after the terminal device connected to the second network device performs connection release and enters an idle state, the The third network device is connected.
The method according to any one of claims 1 to 9, wherein the target device is the second network device,

When the first network device executes the first process, sending indication information to the target device includes:

The first network device sends the indication information to the second network device when performing the first process,

The instruction information is used to instruct the second network device to connect the terminal device to the third network device through the second process according to a preset condition.
The method according to claim 13, wherein the first process includes: switching the terminal device connected to the first network device to connect to the second network device.
The method according to claim 13 or 14, wherein the sending the indication information to the second network device comprises:

The first network device sends the indication information to the terminal device, and the terminal device is used to send the indication information to the second network device.
The method according to any one of claims 13 to 15, wherein the second process includes: the terminal device connected to the second network device is connected to the third network device by handover .
The method according to claim 10 or 15, wherein the sending of the indication information by the first network device to the terminal device comprises:

The first network device sends a radio resource control RRC connection release message or a handover request message to the terminal device, and the RRC connection release message or the handover request message includes the indication information.
The method according to claim 11 or 14, wherein the sending of the indication information by the first network device to the second network device includes:

The first network device sends the indication information to the second network device through a direct connection port, or

The first network device sends the indication information to the second network device through the core network device.
The method according to any one of claims 1 to 18, wherein the first network device and the third network device satisfy at least one of the following conditions:

It corresponds to the same access standard, corresponds to the same public land mobile network PLMN, corresponds to the same core network type, and corresponds to the same network slice.
The method according to any one of claims 1 to 19, wherein at least two network devices in the first network device, the second network device, and the third network device satisfy the following conditions At least one of:

Corresponding to different core network types, corresponding to different PLMNs, corresponding to different network slices and corresponding to different access standards.
A method for establishing a connection, characterized in that it includes:

The second network device receives the instruction information sent by the first network device when the first process is performed;

According to the instruction information, the second network device connects the terminal device to the third network device through the second process according to a preset condition,

Wherein, the first process includes: the terminal device connected to the first network device is connected to the second network device, and the second process includes: the terminal connected to the second network device The device is connected to the third network device.
The method according to claim 21, wherein the first process includes: connecting the terminal device connected to the first network device to the second network device through redirection or handover, and/or or

The second process includes: the terminal device connected to the second network device is connected to the third network device through handover.
The method according to claim 21 or 22, wherein the indication information includes an execution purpose of the first network device to execute the first process.
The method of claim 23, further comprising:

The second network device determines the preset condition corresponding to the execution purpose.
The method according to claim 23 or 24, wherein the execution purpose is that the terminal device executes the first specific service on the second network device.
The method according to any one of claims 21 to 25, wherein the indication information includes the preset condition.
The method according to any one of claims 21 to 26, wherein the preset condition includes:

The second network device connects the terminal device to the third network device through the second process at a preset time and/or preset location.
The method according to claim 27, wherein the preset condition comprises:

After the terminal device performs the first specific service on the second network device, and/or the terminal device needs to perform the second specific service, pass the terminal device through the second process Connected to the third network device.
The method according to claim 25 or 28, wherein the first specific service includes at least one of the following: voice service, video service, and emergency call service.
The method according to any one of claims 21 to 29, wherein the second network device receiving the indication information sent by the first network device when performing the first process includes:

The second network device receives the indication information sent by the first network device through the direct connection port or the core network device when the first process is performed,

Wherein, the first process includes: switching the terminal device connected to the first network device to connect to the second network device.
The method according to any one of claims 21 to 29, wherein the second network device receiving the indication information sent by the first network device when performing the first process includes:

The second network device receives the instruction information sent by the terminal device when the first process is performed, where the instruction information is that the terminal device receives the first information when the first process is performed. Sent by a network device.
The method according to claim 31, wherein the second network device receiving the indication information sent by the terminal device when performing the first process includes:

When performing the first procedure, the second network device receives a radio resource control RRC connection establishment request message or a handover completion message sent by the terminal device, and the RRC connection establishment request message or the handover completion message includes the indication information.
The method according to any one of claims 21 to 32, wherein the first network device and the third network device satisfy at least one of the following conditions:

It corresponds to the same access standard, corresponds to the same public land mobile network PLMN, corresponds to the same core network type, and corresponds to the same network slice.
The method according to any one of claims 21 to 33, wherein at least two network devices among the first network device, the second network device, and the third network device satisfy the following conditions At least one of:

Corresponding to different core network types, corresponding to different PLMNs, corresponding to different network slices and corresponding to different access standards.
A method for establishing a connection, characterized in that it includes:

The terminal device receives the indication information sent by the first network device when the first process is performed;

The terminal device is connected to the third network device through the second process according to the preset condition according to the instruction information

Wherein, the first process includes: connecting the terminal device connected to the first network device to a second network device, and the second process includes: connecting the terminal device connected to the second network device To the third network device.
The method according to claim 35, wherein the first process comprises: the terminal device connected to the first network device is connected to the second network device through redirection or switching, and/or or

The second process includes: connecting the terminal device connected to the second network device to the third network device through redirection.
The method according to claim 35 or 36, wherein the indication information includes an execution purpose of the first network device to execute the first process.
The method of claim 37, further comprising:

The terminal device determines the preset condition corresponding to the execution purpose.
The method according to claim 37 or 38, wherein the execution purpose is that the terminal device executes the first specific service on the second network device.
The method according to any one of claims 35 to 39, wherein the indication information includes the preset condition.
The method according to any one of claims 35 to 40, wherein the preset condition includes:

The terminal device is connected to the third network device through the second process at a preset time and/or preset location.
The method according to claim 41, wherein the preset condition comprises:

After the terminal device finishes executing the first specific service on the second network device, and/or the terminal device needs to perform the second specific service, the terminal device connects through the second process To the third network device.
The method according to claim 39 or 42, wherein the first specific service includes at least one of the following: voice service, video service, and emergency call service.
The method according to any one of claims 35 to 43, wherein the terminal device receives instruction information sent by the first network device when performing the first process, including:

When performing the first process, the terminal device receives a radio resource control RRC connection release message or a handover request message sent by the first network device. The RRC connection release message or the handover request message includes all The instructions.
The method according to any one of claims 35 to 43, wherein the terminal device receives instruction information sent by the first network device when performing the first process, including:

The terminal device receives the instruction information sent by the second network device when the first process is performed, where the instruction information is when the second network device performs the first process After receiving the first network device, the first process includes: switching the terminal device connected to the first network device to connect to the second network device.
The method according to any one of claims 35 to 45, wherein the first network device and the third network device satisfy at least one of the following conditions:

It corresponds to the same access standard, corresponds to the same public land mobile network PLMN, corresponds to the same core network type, and corresponds to the same network slice.
The method according to any one of claims 35 to 46, wherein at least two network devices among the first network device, the second network device, and the third network device satisfy the following conditions At least one of:

Corresponding to different core network types, corresponding to different PLMNs, corresponding to different network slices and corresponding to different access standards.
A network device, characterized by comprising: a processing unit and a transceiver unit,

The transceiver unit is used for:

When the processing unit executes the first process, it sends instruction information to the target device, where the instruction information is used to instruct the target device to connect the terminal device to the third network device through the second process according to a preset condition,

Wherein, the target device is the terminal device or the second network device,

The first process includes: connecting the terminal device connected to the network device to the second network device,

The second process includes connecting the terminal device connected to the second network device to the third network device.
The network device according to claim 48, wherein the first process includes: the terminal device connected to the network device is connected to the second network device through redirection or switching, and/or

The second process includes: connecting the terminal device connected to the second network device to the third network device through redirection or switching.
The network device according to claim 48 or 49, wherein the instruction information includes an execution purpose of the network device to execute the first process.
The network device according to claim 50, wherein the execution purpose is used by the target device to determine the corresponding preset condition.
The network device according to claim 50 or 51, wherein the execution purpose is that the terminal device executes a first specific service on the second network device.
The network device according to any one of claims 48 to 52, wherein the indication information includes the preset condition.
The network device according to any one of claims 48 to 53, wherein the preset condition includes:

At a preset time and/or preset location, connect the terminal device to the third network device through the second process.
The network device according to any one of claims 48 to 53, wherein the preset condition includes:

After the terminal device performs the first specific service on the second network device, and/or the terminal device needs to perform the second specific service, pass the terminal device through the second process Connected to the third network device.
The network device according to claim 52 or 55, wherein the first specific service includes at least one of the following: voice service, video service, and emergency call service.
The network device according to any one of claims 48 to 56, wherein the target device is the terminal device,

The transceiver unit is used for:

Sending the instruction information to the terminal device, where the instruction information is used to instruct the terminal device to connect to the third network device through the second process according to a preset condition.
The network device according to claim 57, wherein the transceiver unit is used to:

Sending the indication information to the second network device, where the second network device is used to send the indication information to the terminal device, and the first process includes: the terminal device connected to the network device Switch to connect with the second network device.
The network device according to claim 57 or 58, wherein the second process includes: after the terminal device connected to the second network device performs connection release and enters an idle state, the The third network device is connected.
The network device according to any one of claims 48 to 56, wherein the target device is the second network device,

The transceiver unit is used for:

When the processing unit executes the first process, send the indication information to the second network device,

The instruction information is used to instruct the second network device to connect the terminal device to the third network device through the second process according to a preset condition.
The network device according to claim 60, wherein the first process includes: switching the terminal device connected to the network device to connect to the second network device.
The network device according to claim 60 or 61, wherein the transceiver unit is used to:

Sending the indication information to the terminal device, where the terminal device is used to send the indication information to the second network device.
The network device according to any one of claims 60 to 62, wherein the second process includes: the terminal device connected to the second network device is connected to the third network by handover device.
The network device according to claim 57 or 62, wherein the transceiver unit is used to:

Sending a radio resource control RRC connection release message or a handover request message to the terminal device, where the RRC connection release message or the handover request message includes the indication information.
The network device according to claim 58 or 61, wherein the transceiver unit is used to:

Send the instruction information to the second network device through the direct connection port, or

Sending the indication information to the second network device through the core network device.
The network device according to any one of claims 48 to 65, wherein the network device and the third network device satisfy at least one of the following conditions:

It corresponds to the same access standard, corresponds to the same public land mobile network PLMN, corresponds to the same core network type, and corresponds to the same network slice.
The network device according to any one of claims 48 to 66, wherein at least two network devices among the network device, the second network device, and the third network device satisfy the following conditions at least one:

Corresponding to different core network types, corresponding to different PLMNs, corresponding to different network slices and corresponding to different access standards.
A network device, characterized in that it includes:

The transceiver unit is used to receive the instruction information sent by the first network device when the first process is performed;

A processing unit, configured to connect the terminal device to the third network device through the second process according to the preset information according to the instruction information,

Wherein, the first process includes: the terminal device connected to the first network device is connected to the network device, and the second process includes: the terminal device connected to the network device is connected to the network device Describe the third network device.
The network device according to claim 68, wherein the first process includes: connecting the terminal device connected to the first network device to the network device through redirection or switching, and/or

The second process includes: the terminal device connected to the network device is connected to the third network device through handover.
The network device according to claim 68 or 69, wherein the indication information includes an execution purpose of the first network device to execute the first process.
The network device according to claim 70, wherein the processing unit is further configured to:

Determining the preset condition corresponding to the execution purpose.
The network device according to claim 70 or 71, wherein the execution purpose is that the terminal device executes the first specific service on the network device.
The network device according to any one of claims 68 to 72, wherein the indication information includes the preset condition.
The network device according to any one of claims 68 to 73, wherein the preset condition includes:

The network device connects the terminal device to the third network device through the second process at a preset time and/or preset location.
The network device according to claim 74, wherein the preset condition includes:

After the terminal device performs the first specific service on the network device, and/or the terminal device needs to perform the second specific service, connect the terminal device to the network through the second process The third network device.
The network device according to claim 72 or 75, wherein the first specific service includes at least one of the following: voice service, video service, and emergency call service.
The network device according to any one of claims 68 to 76, wherein the transceiver unit is used to:

Receiving the instruction information sent by the first network device through the direct connection port or the core network device when the first process is performed,

Wherein, the first process includes: switching the terminal device connected to the first network device to connect to the network device.
The network device according to any one of claims 68 to 76, wherein the transceiver unit is used to:

When the first process is executed, receiving the indication information sent by the terminal device, where the indication information is received by the terminal device when the first process is executed, by the first network device.
The network device according to claim 78, wherein the transceiver unit is configured to:

When the first procedure is performed, a radio resource control RRC connection establishment request message or a handover completion message sent by the terminal device is received, and the RRC connection establishment request message or the handover completion message includes the indication information.
The network device according to any one of claims 68 to 79, wherein the first network device and the third network device satisfy at least one of the following conditions:

It corresponds to the same access standard, corresponds to the same public land mobile network PLMN, corresponds to the same core network type, and corresponds to the same network slice.
The network device according to any one of claims 68 to 80, wherein at least two network devices among the first network device, the network device, and the third network device satisfy the following conditions at least one:

Corresponding to different core network types, corresponding to different PLMNs, corresponding to different network slices and corresponding to different access standards.
A terminal device is characterized by comprising: a processing unit and a transceiver unit,

The transceiver unit is used to receive the instruction information sent by the first network device when the first process is performed;

The processing unit is configured to connect to the third network device through the second process according to the preset condition according to the instruction information,

Wherein, the first process includes: connecting the terminal device connected to the first network device to a second network device, and the second process includes: connecting the terminal device connected to the second network device To the third network device.
The terminal device according to claim 82, wherein the first process includes: connecting the terminal device connected to the first network device to the second network device through redirection or switching, and /or

The second process includes: connecting the terminal device connected to the second network device to the third network device through redirection.
The terminal device according to claim 82 or 83, wherein the indication information includes an execution purpose of the first network device to execute the first process.
The terminal device according to claim 84, wherein the processing unit is further configured to:

Determining the preset condition corresponding to the execution purpose.
The terminal device according to claim 84 or 85, wherein the execution purpose is that the terminal device executes a first specific service on the second network device.
The terminal device according to any one of claims 82 to 86, wherein the instruction information includes the preset condition.
The terminal device according to any one of claims 82 to 87, wherein the preset condition includes:

The terminal device is connected to the third network device through the second process at a preset time and/or preset location.
The terminal device according to claim 88, wherein the preset condition comprises:

After the terminal device finishes executing the first specific service on the second network device, and/or the terminal device needs to perform the second specific service, the terminal device connects through the second process To the third network device.
The terminal device according to claim 86 or 89, wherein the first specific service includes at least one of the following: voice service, video service, and emergency call service.
The terminal device according to any one of claims 82 to 90, wherein the transceiver unit is used to:

When the first process is performed, receiving a radio resource control RRC connection release message or a handover request message sent by the first network device, the RRC connection release message or the handover request message including the indication information.
The terminal device according to any one of claims 82 to 90, wherein the transceiver unit is used to:

When the first process is performed, receiving the instruction information sent by the second network device, where the instruction information is that the second network device receives the instruction information when performing the first process Sent by a network device, the first process includes: switching the terminal device connected to the first network device to connect to the second network device.
The terminal device according to any one of claims 82 to 92, wherein the first network device and the third network device satisfy at least one of the following conditions:

It corresponds to the same access standard, corresponds to the same public land mobile network PLMN, corresponds to the same core network type, and corresponds to the same network slice.
The terminal device according to any one of claims 82 to 93, wherein at least two network devices among the first network device, the second network device, and the third network device satisfy the following conditions At least one of:

Corresponding to different core network types, corresponding to different PLMNs, corresponding to different network slices and corresponding to different access standards.
A network device, comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute any of claims 1 to 34 A method for establishing a connection as described in one item.
A terminal device, comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute any of claims 35 to 47 A method for establishing a connection as described in one item.
A chip, characterized in that it includes: a processor for calling and running a computer program from a memory, so that a device installed with the chip executes the connection establishment according to any one of claims 1 to 34 Methods.
A chip, characterized in that it includes: a processor for calling and running a computer program from a memory, so that a device installed with the chip executes the connection establishment according to any one of claims 35 to 47 Methods.
A computer-readable storage medium characterized by storing a computer program that causes a computer to execute the method for establishing a connection according to any one of claims 1 to 34.
A computer-readable storage medium, characterized in that it is used to store a computer program that causes a computer to execute the method for establishing a connection according to any one of claims 35 to 47.
A computer program product, characterized in that it includes computer program instructions that cause a computer to execute the method for establishing a connection according to any one of claims 1 to 34.
A computer program product, characterized in that it includes computer program instructions that cause a computer to execute the method for establishing a connection according to any one of claims 35 to 47.
A computer program, characterized in that the computer program causes a computer to execute the method for establishing a connection according to any one of claims 1 to 34.
A computer program, characterized in that the computer program causes a computer to execute the method for establishing a connection according to any one of claims 35 to 47.