Operation execution method and device, information sending method and device and related equipment

Abstract

The invention discloses an operation execution method, an information sending method and device and related equipment, and belongs to the technical field of communication, and the operation execution method comprises the steps that a first core network node obtains first information, and the first information is information related to a first network system where a terminal resides or is connected; the first core network node executes a first operation based on the first information; the first operation comprises at least one of the following items: selecting a target core network node; switching to a target core network node; redirecting to a target core network node; switching to the first network system; redirecting to the first network system; wherein the network system where the target core network node is located is the first network system.

Description

Technical Field

[0001] This application belongs to the field of communication technologies, and particularly relates to an operation execution method, an information sending method, a device, and related equipment. Background Art

[0002] In related technologies, a terminal can camp on a first network system and a second network system simultaneously. When the terminal switches or redirects from the second network system to the first network system, since the terminal camps on the first network system, the probability of a communication failure occurring in the communication system after the switch or redirection is relatively high. Summary of the Invention

[0003] Embodiments of this application provide an operation execution method, an information sending method, a device, and related equipment, which can solve the problem of a relatively high probability of a communication failure occurring in the communication system during network switching or redirection.

[0004] In a first aspect, an operation execution method is provided, including:

[0005] A first core network node obtains first information, where the first information is information related to a first network system on which the terminal camps or is connected;

[0006] The first core network node performs a first operation based on the first information;

[0007] The first operation includes at least one of the following: selecting a target core network node; switching to the target core network node; redirecting to the target core network node; switching to the first network system; redirecting to the first network system; where the network system where the target core network node is located is the first network system.

[0008] In a second aspect, an information sending method is provided, including:

[0009] A second core network node sends first information to a first core network node, where the first information is information related to a first network system on which the terminal camps or is connected.

[0010] In a third aspect, an information sending method is provided, including:

[0011] A first access network node receives first information sent by a terminal, where the first information is information related to a first network system on which the terminal camps or is connected;

[0012] The first access network node sends the first information to a first core network node.

[0013] In a fourth aspect, an information sending method is provided, including:

[0014] The terminal sends first information to a first access network node or a first core network node, where the first information is information related to a first network system in which the terminal camps or is connected.

[0015] In a fifth aspect, an operation execution method is provided, including:

[0016] The terminal sends first information to a first access network node, where the first information is information related to a first network system in which the terminal camps or is connected;

[0017] The first access network node receives the first information sent by the terminal;

[0018] The first access network node sends the first information to the first core network node;

[0019] The first core network node performs a first operation based on the first information;

[0020] The first operation includes at least one of the following: selecting a target core network node; switching to the target core network node; redirecting to the target core network node; switching to the first network system; redirecting to the first network system; where the network system where the target core network node is located is the first network system.

[0021] In a sixth aspect, an operation execution device is provided. The first core network node includes the operation execution device, and the device includes:

[0022] An obtaining module, configured to obtain first information, where the first information is information related to a first network system in which the terminal camps or is connected;

[0023] An execution module, configured to perform a first operation based on the first information;

[0024] The first operation includes at least one of the following: selecting a target core network node; switching to the target core network node; redirecting to the target core network node; switching to the first network system; redirecting to the first network system; where the network system where the target core network node is located is the first network system.

[0025] In a seventh aspect, an information sending device is provided. The second core network node includes the information sending device, and the device includes:

[0026] A first sending module, configured to send first information to a first core network node, where the first information is information related to a first network system in which the terminal camps or is connected.

[0027] In an eighth aspect, an information sending device is provided. The first access network node includes the information sending device, and the device includes:

[0028] A receiving module, configured to receive first information sent by a terminal, where the first information is information related to a first network system to which the terminal camps or connects;

[0029] A second sending module, configured to send the first information to a first core network node.

[0030] In a ninth aspect, an information sending device is provided. A terminal includes the information sending device, and the device includes:

[0031] A third sending module, configured to send first information to a first access network node or a first core network node, where the first information is information related to a first network system to which the terminal camps or connects.

[0032] In a tenth aspect, a network side device is provided. The network side device includes a processor and a memory. The memory stores a program or instruction that can run on the processor. When the program or instruction is executed by the processor, the steps of the method described in the first aspect or the second aspect or the third aspect are implemented.

[0033] In an eleventh aspect, a terminal is provided. The terminal includes a processor and a memory. The memory stores a program or instruction that can run on the processor. When the program or instruction is executed by the processor, the steps of the method described in the fourth aspect are implemented.

[0034] In a twelfth aspect, a first core network node is provided, including a processor and a communication interface, where

[0035] the communication interface is configured to: obtain first information, where the first information is information related to a first network system to which the terminal camps or connects;

[0036] the processor is configured to: perform a first operation based on the first information;

[0037] The first operation includes at least one of the following: selecting a target core network node; switching to the target core network node; redirecting to the target core network node; switching to the first network system; redirecting to the first network system; where the network system where the target core network node is located is the first network system.

[0038] In a thirteenth aspect, a second core network node is provided, including a processor and a communication interface, where the communication interface is configured to:

[0039] send first information to a first core network node, where the first information is information related to a first network system to which the terminal camps or connects.

[0040] In a fourteenth aspect, a first access network node is provided, including a processor and a communication interface, where the communication interface is configured to:

[0041] Receive the first information sent by the receiving terminal, where the first information is information related to the first network system to which the terminal camps or connects;

[0042] Send the first information to the first core network node.

[0043] In a fifteenth aspect, a terminal is provided, including a processor and a communication interface. Among them, the communication interface is used for:

[0044] Send the first information to the first access network node or the first core network node, where the first information is information related to the first network system to which the terminal camps or connects.

[0045] In a sixteenth aspect, an operation execution system is provided, including: a terminal, a first core network node, a second core network node, and a first access network node. The first core network node can be used to execute the steps of the method described in the first aspect, the second core network node can be used to execute the steps of the method described in the second aspect, the first access network node can be used to execute the steps of the method described in the third aspect, and the terminal can be used to execute the steps of the method described in the fourth aspect.

[0046] In a seventeenth aspect, a readable storage medium is provided. A program or instruction is stored on the readable storage medium. When the program or instruction is executed by a processor, it implements the steps of the method described in the first aspect, or implements the steps of the method described in the second aspect, or implements the steps of the method described in the third aspect, or implements the steps of the method described in the fourth aspect.

[0047] In an eighteenth aspect, a chip is provided. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run a program or instruction to implement the method described in the first aspect, or implement the method described in the second aspect, or implement the method described in the third aspect, or implement the method described in the fourth aspect.

[0048] In a thirteenth aspect, a computer program / program product is provided. The computer program / program product is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the steps of the method described in the first aspect, or implement the steps of the method described in the second aspect, or implement the steps of the method described in the third aspect, or implement the steps of the method described in the fourth aspect.

[0049] In an embodiment of the present application, a first network function obtains first information, where the first information is information related to a first network system in which a terminal camps or connects; the first network function performs a first operation based on the first information; the first operation includes at least one of the following: selecting a target core network function; switching to the target core network function; redirecting to the target core network function; switching to the first network system; redirecting to the first network system; where the network system where the target core network function is located is the first network system. In this way, when switching or redirecting to the core network function or network of the first network system, the switching or redirecting is performed considering the information related to the first network system in which the terminal camps or connects, supporting the adaptation of the selected or switched or redirected core network function to the information related to the first network system in which the terminal camps or connects, reducing the probability of communication failures in the communication system, and improving the stability of the communication system. Description of the Drawings

[0050] Figure 1 is a block diagram of a wireless communication system to which an embodiment of the present application can be applied;

[0051] Figure 2 is a flowchart of an operation execution method provided by an embodiment of the present application;

[0052] Figure 3 is one of the flowcharts of an information sending method provided by an embodiment of the present application;

[0053] Figure 4 is another flowchart of an information sending method provided by an embodiment of the present application;

[0054] Figure 5 is yet another flowchart of an information sending method provided by an embodiment of the present application;

[0055] Figure 6 is a schematic diagram of a network switching process in the related art;

[0056] Figure 7 is one of the schematic diagrams of a network switching process provided by an embodiment of the present application;

[0057] Figure 8 is another schematic diagram of a network switching process provided by an embodiment of the present application;

[0058] Figure 9 is yet another schematic diagram of a network switching process provided by an embodiment of the present application;

[0059] Figure 10 is another schematic diagram of a network switching process provided by an embodiment of the present application;

[0060] Figure 11It is a schematic structural diagram of an operation execution device provided by an embodiment of the present application;

[0061] Figure 12 It is one of the schematic structural diagrams of an information sending device provided by an embodiment of the present application;

[0062] Figure 13 It is another schematic structural diagram of an information sending device provided by an embodiment of the present application;

[0063] Figure 14 It is yet another schematic structural diagram of an information sending device provided by an embodiment of the present application;

[0064] Figure 15 It is a schematic structural diagram of a communication device provided by an embodiment of the present application;

[0065] Figure 16 It is a schematic structural diagram of a terminal provided by an embodiment of the present application;

[0066] Figure 17 It is a schematic structural diagram of a network-side device provided by an embodiment of the present application. Detailed implementation manners

[0067] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, rather than all, of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0068] The terms "first", "second", etc. in the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are usually of the same category, and the number of objects is not limited. For example, the first object can be one or more. In addition, "or" in the present application means at least one of the connected objects. For example, "A or B" covers three scenarios, namely, Scenario 1: including A and not including B; Scenario 2: including B and not including A; Scenario 3: including both A and B. The character " / " generally indicates an "or" relationship between the associated objects before and after.

[0069] The term "indication" in this application can be either a direct indication (or an explicit indication) or an indirect indication (or an implicit indication). Among them, a direct indication can be understood as that the sender clearly informs the receiver of specific information, operations to be performed, or request results, etc. in the sent indication; an indirect indication can be understood as that the receiver determines the corresponding information according to the indication sent by the sender, or makes a judgment and determines the operations to be performed or request results, etc. according to the judgment result.

[0070] It should be noted that the technology described in the embodiments of this application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, and can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), or other systems. The terms "system" and "network" in the embodiments of this application are often used interchangeably, and the described technology can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. The following description describes the New Radio (NR) system for example purposes, and the NR terminology is used in most of the following descriptions, but these technologies can also be applied to systems other than the NR system, such as the 6th Generation (6G) communication system. th Generation, 6G) communication system.

[0071] Figure 1Block diagram of a wireless communication system to which embodiments of the present application can be applied. The wireless communication system includes a terminal 11 and a network-side device 12. Among them, the terminal 11 can be a mobile phone, a tablet personal computer, a laptop computer, a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device, a flight vehicle, a vehicle user equipment (VUE), a shipborne device, a pedestrian user equipment (PUE), a smart home (home appliances with wireless communication functions, such as refrigerators, TVs, washing machines, or furniture, etc.), a game console, a personal computer (PC), a teller machine, or a self-service machine, etc. Wearable devices include: smart watches, smart bracelets, smart earphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart ankle chains, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle user equipment can also be referred to as a vehicle terminal, a vehicle controller, a vehicle module, a vehicle component, a vehicle chip, or a vehicle unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network-side device 12 can include an access network node or a core network node. The access network node can also be referred to as a radio access network (RAN) device, a radio access network function, or a radio access network unit, and can include an access network device, an access network function, a base station, a wireless local area network (WLAN) access point (AP), or a wireless fidelity (WiFi) node, etc.Among them, the base station may be referred to as Node B (NB), Evolved Node B (eNB), the next generation Node B (gNB), New Radio Node B (NR Node B), access point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), home Node B (HNB), home evolved Node B, Transmission Reception Point (TRP), or some other suitable term in the art. As long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiments of this application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.

[0072] The core network node may include, but is not limited to, at least one of the following: core network device, core network function, Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (L-NEF), Binding Support Function (BSF), Application Function (AF), etc. It should be noted that in the embodiments of the present application, only the core network nodes in the NR system are taken as examples for introduction, and the specific types of the core network nodes are not limited.

[0073] The operation execution method, information sending method, device and related equipment provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings through some embodiments and their application scenarios.

[0074] See Figure 2 , Figure 2 is a flowchart of an operation execution method provided by an embodiment of the present application. As Figure 2 shown, the operation execution method includes the following steps:

[0075] Step 101, the first core network node obtains first information, where the first information is information related to the first network system where the terminal camps or connects;

[0076] Step 102, the first core network node performs a first operation based on the first information;

[0077] The first operation includes at least one of the following:

[0078] Select a target core network node;

[0079] Handover to the target core network node;

[0080] Redirect to the target core network node;

[0081] Handover to the first network system;

[0082] Redirect to the first network system;

[0083] Wherein, the network system where the target core network node is located is the first network system.

[0084] In one implementation, the network system where the target core network node is located is the first network system.

[0085] In one implementation, the selected target core network node is used to handover to the first network system or redirect to the first network system.

[0086] In addition, the network system where the first core network node is located and the first network system may be different network systems. The handover to the first network system may refer to the handover from the network system where the first core network node is located to the first network system; the redirect to the first network system may refer to the redirect from the network system where the first core network node is located to the first network system.

[0087] In one implementation, the first information may include: access network related information of the first network system, or core network related information of the first network system. The target core network node may be a cell having an association relationship with the access network related information or core network related information.

[0088] It should be noted that the first core network node may be a network device or a network function, and the specific implementation of the first core network node is not limited in this embodiment. The target core network node may be a network device or a network function, and the specific implementation of the target core network node is not limited in this embodiment.

[0089] In one implementation, taking the first network system as a 4G network system and the terminal handover from a 5G network to a 4G network as an example, the first core network node may be the AMF in the 5G network system, and the target core network node may be a newly added core network node or the MME in the 4G network system.

[0090] In one implementation, taking the first network system as a 5G network system and the terminal's handover from a 4G network to a 5G network as an example, the first core network node can be the MME in the 4G network system, and the target core network node can be a newly added core network node or the AMF in the 5G network system.

[0091] In one implementation, taking the first network system as a 6G network system and the terminal's handover from a 5G network to a 6G network as an example, the first core network node can be the AMF in the 5G network system, and the target core network node can be a newly added core network node or the AMF in the 6G network system.

[0092] In one implementation, taking the first network system as a 5G network system and the terminal's handover from a 6G network to a 5G network as an example, the first core network node can be the AMF in the 6G network system, and the target core network node can be a newly added core network node or the AMF in the 5G network system.

[0093] It should be noted that the core network node can be a network device or a network function, and the specific implementation of the core network node is not limited in this embodiment. Exemplarily, the newly added core network node can be a gateway AMF or a gateway MME.

[0094] In one implementation, when the first information at least includes the access network related information of the first network system where the terminal camps or is connected to, the first core network node performs a first operation based on the first information, including:

[0095] The first core network node performs a first operation based on the access network related information of the first network system where the terminal camps or is connected to.

[0096] In one implementation, when the first information at least includes the core network related information of the first network system where the terminal camps or is connected to, the first core network node performs a first operation based on the first information, including:

[0097] The first core network node performs a first operation based on the core network related information of the first network system where the terminal camps or is connected to.

[0098] In an embodiment of the present application, a first network function obtains first information, where the first information is information related to a first network system in which a terminal camps or connects; the first network function performs a first operation based on the first information; the first operation includes at least one of the following: selecting a target core network function; switching to the target core network function; redirecting to the target core network function; switching to the first network system; redirecting to the first network system; where the network system where the target core network function is located is the first network system. In this way, when switching or redirecting to the core network function or network of the first network system, the switching or redirecting is considered in view of the information related to the first network system in which the terminal camps or connects, supporting the adaptation of the selected or switched or redirected core network function to the information related to the first network system in which the terminal camps or connects, and reducing the probability of communication failures occurring in the communication system.

[0099] Optionally, before the first core network node performs the first operation based on the first information,

[0100] the first core network node receives handover information or redirection information from a first access network node; or

[0101] the handover operation of the first core network node is invoked by the first access network node; or

[0102] the redirection operation of the first core network node is invoked by the first access network node; or

[0103] the handover operation of the first core network node is invoked by a third core network node; or

[0104] the redirection operation of the first core network node is invoked by a third core network node; or

[0105] the first core network node receives handover information or redirection information from the third core network node.

[0106] In one implementation, the first core network node performing the first operation based on the first information includes at least one of the following:

[0107] the first core network node receives handover information or redirection information from the first access network node and performs the first operation;

[0108] the handover operation of the first core network node is invoked by the first access network node and performs the first operation;

[0109] the redirection operation of the first core network node is invoked by the first access network node and performs the first operation;

[0110] the handover operation of the first core network node is invoked by the third core network node and performs the first operation;

[0111] The redirection operation of the first core network node is called by the third core network node to perform the first operation;

[0112] The first core network node receives handover information or redirection information from the third core network node and performs the first operation.

[0113] In one implementation, the first core network node performs a first operation based on the first information, including:

[0114] The first core network node performs the first operation based on the first information in a first case;

[0115] Wherein, the first case includes any one of the following:

[0116] The first core network node receives handover information or redirection information from the first access network node;

[0117] The handover operation of the first core network node is called by the first access network node;

[0118] The redirection operation of the first core network node is called by the first access network node;

[0119] The handover operation of the first core network node is called by the third core network node;

[0120] The redirection operation of the first core network node is called by the third core network node;

[0121] The first core network node receives handover information or redirection information from the third core network node.

[0122] In one implementation, the first core network node may be an existing core network node in a network system. Exemplarily, the first core network node may be an MME in a 4G network system, and the first access network node may be an eNB in a 4G network system. The first condition may include: the MME receives handover information or redirection information from the eNB; or, the handover operation of the MME is called by the eNB; or, the redirection operation of the MME is called by the eNB. Or, the first core network node may be an AMF in a 5G network system, and the first access network node may be a gNB in a 5G network system. The first condition may include: the AMF receives handover information or redirection information from the gNB; or, the handover operation of the AMF is called by the gNB; or, the redirection operation of the AMF is called by the gNB.

[0123] In one implementation, the first core network node may be a newly added core network node. For example, the gateway AMF, and the third core network node may be an existing core network node in the network system. By way of example, the first core network node may be the gateway AMF, and the third core network node may be the MME in the 4G network system. The first condition may include: the gateway AMF receives a handover message or a redirection message from the MME; or, the handover operation of the gateway AMF is invoked by the MME; or, the redirection operation of the gateway AMF is invoked by the MME.

[0124] In this implementation, when the first network function receives a handover message or a redirection message from the first network device, the first network function performs a first operation based on the first information, so that the first network function can, after receiving the handover message or the redirection message from the first network device, consider the information related to the first network system where the terminal camps or is connected to perform handover or redirection, reducing the probability of communication failures occurring in the communication system.

[0125] In this implementation, when the handover operation of the first network function is invoked by the third network function, the first network function performs a first operation based on the first information, so that after the third network function invokes the handover operation of the first network function, the first network function can consider the information related to the first network system where the terminal camps or is connected to perform handover or redirection, reducing the probability of communication failures occurring in the communication system.

[0126] In this implementation, when the redirection operation of the first network function is invoked by the third network function, the first network function performs a first operation based on the first information, so that after the third network function invokes the redirection operation of the first network function, the first network function can consider the information related to the first network system where the terminal camps or is connected to perform handover or redirection, reducing the probability of communication failures occurring in the communication system.

[0127] In this implementation, when the first network function receives a handover message or a redirection message from the third network function, the first network function performs a first operation based on the first information, so that the first network function can, after receiving the handover message or the redirection message from the third network function, consider the information related to the first network system where the terminal camps or is connected to perform handover or redirection, reducing the probability of communication failures occurring in the communication system.

[0128] Optionally, the first information is related to the access network of the first network system. The first core network node obtains the first information, including at least one of the following:

[0129] The first core network node receives the first information from the terminal;

[0130] The first core network node receives the first information from a first access network node.

[0131] Wherein, the first access network node may be a network device or a network function, and the specific implementation of the first access network node is not limited in this embodiment.

[0132] In this implementation manner, the first network function receives the first information from the terminal, and the first network function performs a first operation based on the first information. In this way, when switching or redirecting to the core network function or network of the first network system, the access network related information of the first network system where the terminal resides or is connected sent by the terminal is considered for switching or redirecting, supporting the adaptation of the core network function selected, switched or redirected to the access network related information of the first network system where the terminal resides or is connected, and reducing the probability of communication failures occurring in the communication system.

[0133] In this implementation manner, the first network function receives the first information from the first network device, and the first network function performs a first operation based on the first information. In this way, when switching or redirecting to the core network function or network of the first network system, the access network related information of the first network system where the terminal resides or is connected sent by the terminal is considered for switching or redirecting, supporting the adaptation of the core network function selected, switched or redirected to the access network related information of the first network system where the terminal resides or is connected, and reducing the probability of communication failures occurring in the communication system.

[0134] Optionally, the first information is related to the core network of the first network system. The first core network node obtaining the first information includes at least one of the following:

[0135] The first core network node receives the first information from a second core network node;

[0136] The first core network node receives the first information from the terminal;

[0137] The first core network node receives the first information from a first access network node.

[0138] Wherein, the second core network node may be a UDM or an HSS.

[0139] In this embodiment, the first network function receives first information from the second network function, and the first network function performs a first operation based on the first information. In this way, when performing a handover or redirection to the core network function or network of the first network system, the handover or redirection is performed by considering the core network-related information of the first network system in which the terminal camps or is connected and sent by the second network function, supporting the adaptation of the selected or handover or redirected core network function to the core network-related information of the first network system in which the terminal camps or is connected, and reducing the probability of communication failures occurring in the communication system.

[0140] In this embodiment, the first network function receives the first information from the terminal, and the first network function performs a first operation based on the first information. In this way, when performing a handover or redirection to the core network function or network of the first network system, the handover or redirection is performed by considering the core network-related information of the first network system in which the terminal camps or is connected and sent by the terminal, supporting the adaptation of the selected or handover or redirected core network function to the core network-related information of the first network system in which the terminal camps or is connected, and reducing the probability of communication failures occurring in the communication system.

[0141] In this embodiment, the first network function receives the first information from a first network device, and the first network function performs a first operation based on the first information. In this way, when performing a handover or redirection to the core network function or network of the first network system, the handover or redirection is performed by considering the core network-related information of the first network system in which the terminal camps or is connected and sent by the first network device, supporting the adaptation of the selected or handover or redirected core network function to the core network-related information of the first network system in which the terminal camps or is connected, and reducing the probability of communication failures occurring in the communication system.

[0142] Optionally, the first information is related to the core network of the first network system;

[0143] The first core network node obtains the first information, including: the first core network node receives the first information from a second core network node;

[0144] Wherein, before the first core network node receives the first information from the second core network node,

[0145] the first core network node receives handover information or redirection information from a first access network node; or

[0146] the handover operation of the first core network node is invoked by the first access network node; or

[0147] the redirection operation of the first core network node is invoked by the first access network node; or

[0148] The handover operation of the first core network node is invoked by the third core network node; or

[0149] The redirection operation of the first core network node is invoked by the third core network node; or

[0150] The first core network node receives handover information or redirection information from the third core network node.

[0151] Optionally, the first core network node receives the first information from the second core network node, including at least one of the following:

[0152] The first core network node sends a subscription request to the second core network node and receives the first information sent or notified by the second core network node;

[0153] The first core network node invokes the subscription operation of the second core network node and obtains the first information returned or notified by the second core network node;

[0154] The first core network node sends a query request to the second core network node and receives the first information sent by the second core network node;

[0155] The first core network node invokes the query operation of the second core network node and obtains the returned first information.

[0156] In one implementation, the first core network node obtains the first information and performs a first operation based on the first information, including at least one of the following:

[0157] The first core network node receives handover information or redirection information from the first access network node, first performs the subscription request, the subscription operation, the query request or the query operation, and then performs the first operation;

[0158] The handover operation of the first core network node is invoked by the first access network node, first performs the subscription request, the subscription operation, the query request or the query operation, and then performs the first operation;

[0159] The redirection operation of the first core network node is invoked by the first access network node, first performs the subscription request, the subscription operation, the query request or the query operation, and then performs the first operation;

[0160] The handover operation of the first core network node is invoked by the third core network node, first performs the subscription request, the subscription operation, the query request or the query operation, and then performs the first operation;

[0161] The redirection operation of the first core network node is invoked by the third core network node. First, the subscription request, the subscription operation, the query request, or the query operation is executed, and then the first operation is executed.

[0162] The first core network node receives handover information or redirection information from the third core network node. First, the subscription request, the subscription operation, the query request, or the query operation is executed, and then the first operation is executed.

[0163] In this embodiment, the first network function sends a subscription request to the second network function and receives the first information sent by the second network function based on the subscription request. Thus, the first network function can obtain information related to the first network system where the terminal camps or is connected based on the subscription request, and consider the information related to the first network system where the terminal camps or is connected when performing a handover or redirection to the core network function or network of the first network system.

[0164] In this embodiment, the first network function invokes the subscription operation of the second network function and receives the first information returned by the second network function based on the subscription operation. Thus, the first network function can obtain information related to the first network system where the terminal camps or is connected by invoking the subscription operation, and consider the information related to the first network system where the terminal camps or is connected when performing a handover or redirection to the core network function or network of the first network system.

[0165] In this embodiment, the first network function sends a query request to the second network function and receives the first information sent by the second network function based on the query request. Thus, the first network function can obtain information related to the first network system where the terminal camps or is connected based on the query request, and consider the information related to the first network system where the terminal camps or is connected when performing a handover or redirection to the core network function or network of the first network system.

[0166] In this embodiment, the first network function invokes the query operation of the second network function and obtains the first information returned based on the query operation. Thus, the first network function can obtain information related to the first network system where the terminal camps or is connected by invoking the query operation, and consider the information related to the first network system where the terminal camps or is connected when performing a handover or redirection to the core network function or network of the first network system.

[0167] Optionally, the first core network node receives the first information from the first access network node, including:

[0168] The first core network node receives the first information sent by the first access network node through the third core network node.

[0169] Wherein, the first core network node may be a newly added core network node. Taking the first network system as a 5G network system and the terminal switching from a 4G network to a 5G network as an example, the third core network node may be an MME in the 4G network system, and the first core network node may be a gateway MME or a gateway AMF.

[0170] In this embodiment, by adding a first core network node, it is possible to assist in obtaining the first information without changing the third core network node.

[0171] Optionally, the network system where the first access network node is located is different from the first network system; or,

[0172] The first access network node and the first core network node belong to the same network system; or,

[0173] The network system where the third core network node is located is different from the first network system; or,

[0174] The third core network node and the first core network node belong to different network systems; or,

[0175] The network system where the first core network node is located is different from the first network system.

[0176] In one embodiment, the first core network node may be a newly added core network node or an existing core network node in the network system, and the network system where the first access network node is located is different from the first network system. Taking the first network system as a 5G network system and the terminal switching from a 4G network to a 5G network as an example, the first access network node may be an eNB in the 4G network system.

[0177] In one embodiment, the first core network node may be an existing core network node in the network system, and the first access network node and the first core network node belong to the same network system. Taking the first network system as a 5G network system and the terminal switching from a 4G network to a 5G network as an example, the first core network node may be an MME in the 4G network system, and the first access network node may be an eNB in the 4G network system.

[0178] In one embodiment, the first core network node may be a newly added core network node, and the network system where the third core network node is located is different from the first network system. Taking the first network system as a 5G network system and the terminal switching from a 4G network to a 5G network as an example, the third core network node may be an MME in the 4G network system.

[0179] In one implementation, the first core network node may be a newly added core network node, and the third core network node and the first core network node belong to different network systems. Taking the first network system as a 5G network system and the terminal switching from a 4G network to a 5G network as an example, the third core network node may be an MME in the 4G network system, and the first core network node may be a gateway AMF.

[0180] In one implementation, the first core network node may be a newly added core network node, and the third core network node and the first core network node belong to the same network system. Taking the first network system as a 5G network system and the terminal switching from a 4G network to a 5G network as an example, the third core network node may be an MME in the 4G network system, and the first core network node may be a gateway MME.

[0181] In one implementation, the first core network node may be a newly added core network node or an existing core network node in the network system, and the network system where the first core network node is located is different from the first network system. Taking the first network system as a 5G network system and the terminal switching from a 4G network to a 5G network as an example, the first core network node may be a gateway MME or an MME in the 4G network system.

[0182] Optionally, the first information includes at least one of the following:

[0183] Access network related information of the first network system;

[0184] Core network related information of the first network system.

[0185] Optionally, the core network related information includes: identification information of the fourth core network node; or

[0186] The access network related information includes at least one of the following:

[0187] Cell information;

[0188] Cell group information;

[0189] Base station information;

[0190] Area information.

[0191] Wherein, the fourth core network node may be a network device or a network function, and the specific implementation of the fourth core network node is not limited in this embodiment.

[0192] In one implementation, taking the first network system as a 4G network system and the terminal switching from a 5G network to a 4G network as an example, the fourth core network node may be the MME in the 4G network system. The identification information of the fourth core network node may include: the globally unique MME identity (Globally Unique MME Identity, GUMMEI).

[0193] In one implementation, taking the first network system as a 5G network system and the terminal switching from a 4G network to a 5G network as an example, the fourth core network node may be the AMF in the 5G network system. The identification information of the fourth core network node may include: the globally unique AMF identity (Globally Unique AMF Identity, GUAMI).

[0194] In one implementation, taking the first network system as a 6G network system and the terminal switching from a 5G network to a 6G network as an example, the fourth core network node may be the 6G CN. The identification information of the fourth core network node may include: GUAMI.

[0195] In one implementation, taking the first network system as a 5G network system and the terminal switching from a 6G network to a 5G network as an example, the fourth core network node may be the AMF in the 5G network system. The identification information of the fourth core network node may include: GUAMI.

[0196] In one implementation, the fourth core network node is received by the terminal from the first network system.

[0197] In one implementation, the fourth core network node is the core network node serving the terminal. By way of example, the fourth core network node may be the core network node serving the terminal in the first network system.

[0198] In one implementation, the target core network node may be the fourth core network node. The target core network node selected by the first core network node based on the first information may be the fourth core network node; or the first core network node switches to the target core network node based on the first information, and this target core network node is the fourth core network node; or, the first core network node is redirected to the target core network node based on the first information, and this target core network node is the fourth core network node.

[0199] In one implementation, the cell group information may include a cell group identifier. By way of example, this cell group identifier may include a Closed Subscriber Group (CSG) identifier (Identifier, ID) or a Closed Access Group Identifier (CAG) ID, etc.

[0200] In one implementation, the area information may include an area identifier. For example, the area identifier may include a registration area (RA) identifier, a radio access network (RAN)-based notification area (RNA) identifier, or the like.

[0201] In this implementation, the core network related information may include: the identification information of the fourth core network node, and the target core network node for the first operation selection or handover or redirection may be the fourth core network node. Additionally, the fourth core network node may be the core network node serving the terminal in the first network system, thereby supporting preferentially selecting the fourth core network node that originally served the terminal for handover or redirection, and reducing the probability of communication failures occurring in the communication system.

[0202] In this implementation, the access network related information may include cell information, thereby supporting preferentially selecting a core network node that has an association relationship with the cell information of the first network system where the terminal camps or is connected for handover or redirection, and reducing the probability of communication failures occurring in the communication system. For example, the cell information may include a cell identifier, and the target core network node for the first operation selection or handover or redirection may be the core network node connected to the cell corresponding to the cell identifier.

[0203] In this implementation, the access network related information may include cell group information, thereby supporting preferentially selecting a core network node that has an association relationship with the cell group information of the first network system where the terminal camps or is connected for handover or redirection, and reducing the probability of communication failures occurring in the communication system. For example, the cell group information may include a cell group identifier, and the target core network node for the first operation selection or handover or redirection may be the core network node connected to the cell under the cell group corresponding to the cell group identifier.

[0204] In this implementation, the access network related information may include base station information, thereby supporting preferentially selecting a core network node that has an association relationship with the base station information of the first network system where the terminal camps or is connected for handover or redirection, and reducing the probability of communication failures occurring in the communication system. For example, the base station information may include a base station identifier, and the target core network node for the first operation selection or handover or redirection may be the core network node connected to the base station corresponding to the base station identifier.

[0205] In this embodiment, the access network related information may include area information, so as to support preferentially selecting a core network node associated with the area information of the first network system where the terminal camps or is connected for handover or redirection, reducing the probability of communication failures occurring in the communication system. Exemplarily, the area information may include an area identifier, and the target core network node selected or switched or redirected by the first operation may be a core network node connected to a cell or a base station in a registration area or a radio notification area corresponding to the area identifier.

[0206] Optionally, the second core network node is a core network node of the first network system; or

[0207] The cell corresponding to the cell information belongs to the first network system; or

[0208] The cell group corresponding to the cell group information belongs to the first network system; or

[0209] The base station corresponding to the base station information belongs to the first network system.

[0210] See Figure 3 , Figure 3 which is a flowchart of an information sending method provided by an embodiment of the present application. As Figure 3 shown, the information sending method includes the following steps:

[0211] Step 201, the second core network node sends first information to the first core network node, and the first information is information related to the first network system where the terminal camps or is connected.

[0212] In one embodiment, the first information is used to perform a first operation;

[0213] The first operation includes at least one of the following:

[0214] Selecting a target core network node;

[0215] Handing over to the target core network node;

[0216] Redirecting to the target core network node;

[0217] Handing over to the first network system;

[0218] Redirecting to the first network system;

[0219] wherein the network system where the target core network node is located is the first network system.

[0220] Optionally, the second core network node sending the first information to the first core network node includes at least one of the following:

[0221] The second core network node receives the subscription request sent by the first core network node, and sends or notifies the first information to the first core network node based on the subscription request;

[0222] The second core network node returns or notifies the first information to the first core network node based on the subscription operation invoked by the first core network node;

[0223] The second core network node receives the query request sent by the first core network node, and sends the first information to the first core network node based on the query request;

[0224] The second core network node returns the first information to the first core network node based on the query operation invoked by the first core network node.

[0225] It should be noted that, as the implementation manner on the side of the second core network node corresponding to the embodiment shown in Figure 2 the specific implementation manner can refer to the relevant description of the embodiment shown in Figure 2 To avoid repeated description, this embodiment will not be elaborated here.

[0226] Refer to Figure 4 , Figure 4 which is a flowchart of an information sending method provided by an embodiment of the present application. As shown in Figure 4 the information sending method includes the following steps:

[0227] Step 301: The first access network node receives the first information sent by the terminal, where the first information is information related to the first network system where the terminal camps or connects;

[0228] Step 302: The first access network node sends the first information to the first core network node.

[0229] In one implementation manner, the first information is used to perform a first operation;

[0230] The first operation includes at least one of the following:

[0231] Select a target core network node;

[0232] Switch to the target core network node;

[0233] Redirect to the target core network node;

[0234] Switch to the first network system;

[0235] Redirect to the first network system;

[0236] Wherein, the network system where the target core network node is located is the first network system.

[0237] In one implementation, taking the first access network node as a base station as an example, the terminal can send the first information to the base station, and when the base station decides to perform a handover operation, it sends the first information to the core network.

[0238] Optionally, the first access network node sending the first information to the first core network node includes at least one of the following:

[0239] The first access network node sends the first information to the first core network node through a handover process;

[0240] The first access network node sends handover information or redirection information to the first core network node, and the handover information or redirection information carries the first information;

[0241] The first access network node invokes the handover operation or redirection operation of the first core network node, where the first information is used as a parameter for invoking the handover operation or redirection operation.

[0242] In one implementation, the method further includes:

[0243] The first access network node performs a second operation based on the first information;

[0244] The second operation includes at least one of the following:

[0245] Select a target cell;

[0246] Select a target base station;

[0247] Hand over to the target cell;

[0248] Hand over to the target base station;

[0249] Redirect to the target cell;

[0250] Redirect to the target base station;

[0251] Hand over to the first network system;

[0252] Redirect to the first network system;

[0253] Wherein, the first network system is different from the network system where the first access network node is located.

[0254] In one implementation, the first access network node receiving the first information sent by the terminal includes any one of the following:

[0255] The first access network node receives a measurement report sent by the terminal;

[0256] The first access network node receives the measurement report and terminal assistance information sent by the terminal.

[0257] In one implementation, the measurement report includes at least one of the following:

[0258] Access network related information of the first network system where the terminal camps or connects;

[0259] Core network related information of the first network system where the terminal camps or connects.

[0260] In one implementation, the terminal assistance information includes at least one of the following:

[0261] Access network related information of the first network system where the terminal camps or connects;

[0262] Core network related information of the first network system where the terminal camps or connects.

[0263] It should be noted that, as the implementation manner on the side of the first access network node corresponding to the embodiment shown in Figure 2 the specific implementation manner can refer to the relevant description of the embodiment shown in Figure 2 To avoid repeated description, this embodiment will not be elaborated here.

[0264] Refer to Figure 5 , Figure 5 which is a flowchart of an information sending method provided by an embodiment of the present application. As shown in Figure 5 the information sending method includes the following steps:

[0265] Step 401, the terminal sends first information to the first access network node or the first core network node, and the first information is information related to the first network system where the terminal camps or connects.

[0266] In one implementation, the first information is used to perform a first operation;

[0267] The first operation includes at least one of the following:

[0268] Select a target core network node;

[0269] Handover to the target core network node;

[0270] Redirect to the target core network node;

[0271] Handover to the first network system;

[0272] Redirect to the first network system;

[0273] Wherein, the network system where the target core network node is located is the first network system.

[0274] In one implementation, the terminal sends first information to a first access network node or a first core network node, including any one of the following:

[0275] The terminal sends a measurement report to the first access network node or the first core network node;

[0276] The terminal sends a measurement report and terminal assistance information to the first access network node or the first core network node.

[0277] In one implementation, the measurement report includes at least one of the following:

[0278] Access network related information of the first network system where the terminal camps or is connected;

[0279] Core network related information of the first network system where the terminal camps or is connected.

[0280] In one implementation, the terminal assistance information includes at least one of the following:

[0281] Access network related information of the first network system where the terminal camps or is connected;

[0282] Core network related information of the first network system where the terminal camps or is connected.

[0283] It should be noted that, as the implementation manner on the terminal side corresponding to the embodiment shown in Figure 2 The specific implementation manner can refer to the relevant description of the embodiment shown in Figure 2 For the sake of avoiding repeated description, this embodiment will not be elaborated herein.

[0284] It should be noted that since the 5G coverage is not comprehensive, at some 5G edges, the network signal under 4G coverage is better, and the terminal can choose dual camping. In related technologies, as shown in Figure 6 After the terminal dual camps and then performs a handover, the core network node for the handover is most likely not the core network node that originally served the terminal, resulting in a relatively high probability of communication failure in the network system.

[0285] In the embodiment of the present application, after the terminal dual camps and then performs a handover, the probability that the target core network node for the handover is the core network node that originally served the terminal is relatively large, which can reduce the probability of communication failure in the network system. Further, based on the assumption of allowing handover under dual registration, the embodiment of the present application can support that the target core network node for the handover is the core network node that originally served the terminal, facilitating the terminal to perform context merging and simplifying the context merging operation of the terminal.

[0286] The operation execution method and information sending method provided by the embodiment of the present application will be described below through several specific embodiments:

[0287] It should be noted that in the following embodiments, only the 4G+5G dual registration is taken as an example for illustration, and it is not limited to the 4G+5G dual registration mode. For example, it can also be applicable to 5G+6G dual registration and combinations of future mobile communication technologies.

[0288] In the following Embodiment 1 and Embodiment 2, the first core network node is the AMF in the 5G network system, the second core network node is the UDM / HSS, and the first access network node is the 5G base station gNB for illustration.

[0289] Embodiment 1:

[0290] As Figure 7 shown, this embodiment is described by taking the handover of the terminal from 5G to 4G as an example.

[0291] Step (11): The user equipment (UE, i.e., the terminal) camps on 4G and 5G simultaneously, and the UE is in the connected state in 5G, and can be in the connected state or the idle state in 4G.

[0292] Step (12): Optionally, when the UE enters the connected state in 5G or before sending a measurement report to the 5G base station gNB, the UE sends the information of the MME serving the UE in 4G to the gNB, for example, sends the GUMMEI through the RRC_UEAssistanceInformation message; or, the UE reports a measurement report to the 5G base station gNB, and the measurement report contains 4G access network related information, for example, the 4G cell information (such as cell identification) where the UE camps, the indication information used to indicate that the reported measurement information is related to the 4G camping of the UE, the base station information where the UE camps (such as eNB ID), the 4G registration area information where the UE camps, etc.; the measurement report can also contain 4G core network related information, for example, the identification information of the MME serving the UE in 4G, such as GUMMEI.

[0293] Step (13): When the gNB decides to hand over the UE to 4G, based on the information reported by the UE in step (12), especially the 4G access network related information, it preferentially selects a cell associated with the above 4G network related information (such as 4G access network related information or 4G core network related information) as the target cell for handover, such as the eNB currently serving the UE, the eNB that can serve the UE, or the eNB connected to the MME, etc.

[0294] Step (14): Optionally, the gNB sends the MME information of the 4G serving UE to the AMF, such as the MME information included in the information reported by the terminal received by the gNB in step (12), or the MME information determined locally by the gNB. Exemplarily, the gNB may determine the MME information based on configuration-related information.

[0295] Step (15): Optionally, the AMF queries the UDM / HSS for the MME information of the 4G serving UE.

[0296] Step (16): The AMF selects a target MME based on the MME information received in step (14), or based on the MME information obtained in step (15), or based on the MME information determined locally by the AMF. Among them, the MME information determined locally by the AMF may be the MME information determined based on the target eNB information and local configuration information.

[0297] Steps (17) to (19): Perform subsequent handover procedures.

[0298] It should be noted that the AMF can also subscribe to the MME information of the 4G serving UE from the UDM / HSS, and this MME information can be notified by the UDM to the AMF.

[0299] It should be noted that the implementation of the terminal's handover from 4G to 5G is similar to the implementation of the terminal's handover from 5G to 4G. Just interchange 4G and 5G in this embodiment, interchange eNB and gNB in this embodiment, interchange MME and AMF in this embodiment, and replace GUMMEI with GUAMI in this embodiment.

[0300] In addition, the implementation of the terminal's handover from 5G to 6G is similar to the implementation of the terminal's handover from 5G to 4G. Replace 5G with 6G in this embodiment, replace 4G with 5G in this embodiment, replace gNB with a 6G base station in this embodiment, replace eNB with gNB in this embodiment, replace AMF with a 6G CN in this embodiment, replace MME with AMF in this embodiment, and replace GUMMEI with GUAMI.

[0301] Embodiment 2:

[0302] As Figure 8 shown, this embodiment is described by taking the terminal's handover from 5G to 4G as an example.

[0303] Step (21): The UE camps on both 4G and 5G simultaneously, and the UE is in the connected state on 5G and can be in the connected state or the idle state on 4G. During the process of the UE registering for 5G or after the registration is completed, the AMF subscribes to 4G network-related events from the UDM / HSS, such as MME change events, 4G registration update events, or UE 4G context change events, etc.

[0304] Step (22): When the UDM / HSS receives the subscription request in step (21) and when the UDM / HSS receives the registration of the MME for the first time or there is already a registration of the MME under 4G in the UDM / HSS, the UDM / HSS sends the MME information serving the UE on 4G to the AMF. For example, the UDM / HSS sends the MME information serving the UE on 4G to the AMF by responding to the subscription request or by sending the MME information serving the UE on 4G to the AMF through Notification.

[0305] Step (23): The UE reports a measurement report to the 5G base station gNB, and this measurement report can contain 4G access network-related information. For example, the 4G cell information (such as cell identity) where the UE camps, the indication information used to indicate that the reported measurement information is related to the UE's 4G camping, the base station information (such as eNB ID) where the UE camps, the 4G registration area information where the UE camps, etc.

[0306] Step (24): When the gNB decides to hand over the UE to 4G, it can, based on the 4G access network-related information reported by the UE in step (23), preferentially select a cell associated with the above 4G access network-related information as the target cell for the handover, such as the eNB currently serving the UE or the eNB that can serve the UE.

[0307] Step (25): The gNB sends a handover request to the AMF.

[0308] Step (26): The AMF selects the target MME based on the MME information received in step (22).

[0309] Step (27): Perform the subsequent handover process.

[0310] It should be noted that the implementation of the terminal's handover from 4G to 5G is similar to the implementation of the terminal's handover from 5G to 4G. Just swap 4G and 5G in this embodiment, swap eNB and gNB in this embodiment, swap MME and AMF in this embodiment, and replace GUMMEI with GUAMI in this embodiment.

[0311] In addition, the implementation of the terminal's handover from 5G to 6G is similar to the implementation of the terminal's handover from 5G to 4G. Replace 5G in this embodiment with 6G, 4G in this embodiment with 5G, gNB in this embodiment with a 6G base station, eNB in this embodiment with gNB, AMF in this embodiment with 6G CN, MME in this embodiment with AMF, and GUMMEI in this embodiment with GUAMI.

[0312] In the following Embodiment 3 and Embodiment 4, an example is given where the first core network node is the gateway AMF, the second core network node is the UDM / HSS, the third core network node is the MME in the 4G network system, and the first access network node is the 4G base station eNB.

[0313] Embodiment 3:

[0314] As Figure 9 shown, this embodiment is described by taking the terminal's handover from 4G to 5G as an example.

[0315] Step (31): The UE camps on both 4G and 5G at the same time, and the UE is in the connected state on 4G and can be in the connected state or the idle state on 5G.

[0316] Step (32): The UE reports a measurement report to the 4G base station eNB. The generation rules of this measurement report include at least one of the following:

[0317] The first rule: The cell signal related to the 5G camped cell is the strongest signal;

[0318] The second rule: The cell signal related to the cell included in the 5G registration area is stronger than the cell signal related to the cell included in the non-5G registration area.

[0319] Exemplarily, the first rule can be adopted when the UE is in the connected state on 4G; the second rule can be adopted when the UE is in the idle state on 4G.

[0320] Step (33): The eNB selects a target cell based on the measurement report reported by the UE, and will select the 5G camped cell of the UE as the target cell, or select the cell in the 5G registration area of the UE as the target cell.

[0321] Step (34): The eNB sends a handover request to the MME.

[0322] Step (35): The MME sends a handover request to the gateway AMF based on the configuration.

[0323] Step (36): The gateway AMF queries the AMF information of the serving UE from the UDM / HSS.

[0324] Step (37): The gateway AMF selects a target AMF based on the AMF information received in step (36).

[0325] Step (38): The gateway AMF forwards the handover request to the target AMF.

[0326] Steps (39) to (310): Perform subsequent handover procedures.

[0327] It should be noted that the gateway AMF can also subscribe to the MME information of the 5G serving UE from the UDM / HSS.

[0328] It should be noted that the implementation of the terminal's handover from 5G to 4G is similar to the implementation of the terminal's handover from 4G to 5G. Interchange 4G and 5G in this embodiment, interchange eNB and gNB in this embodiment, and interchange MME and AMF in this embodiment.

[0329] In addition, the implementation of the terminal's handover from 5G to 6G is similar to the implementation of the terminal's handover from 4G to 5G. Replace 5G with 6G in this embodiment, replace 4G with 5G in this embodiment, replace eNB with a 6G base station in this embodiment, replace gNB with a 6G CN in this embodiment, replace MME with AMF in this embodiment, and replace AMF with a 6G CN in this embodiment.

[0330] Embodiment 4:

[0331] As Figure 10 shown, this embodiment is described by taking the terminal's handover from 4G to 5G as an example.

[0332] Step (41): The UE camps on both 4G and 5G simultaneously, is in the connected state on 4G, and can be in the connected state or the idle state on 5G. The gateway AMF can subscribe to the AMF change event from the UDM / HSS, or implicitly subscribe to the AMF change event. Implicitly subscribing to the AMF change event means not explicitly performing the subscription process, but through configuration, the UDM configures the corresponding gateway AMF to subscribe to this event. For example, it is configured that a group of AMFs are related to a certain gateway AMF.

[0333] Step (42): When the UDM / HSS receives the subscription request in step (41) or the gateway AMF implicitly subscribes to the AMF change event, and there is already a registration of the AMF under 5G in the UDM / HSS, the UDM / HSS sends the AMF information to this AMF. For example, the UDM / HSS sends the AMF information to the gateway AMF by responding to the subscription request, or sends the AMF information to the gateway AMF through Notification.

[0334] Steps (43)-(46): The same as steps (32)-(35) in Embodiment 3.

[0335] Step (47): The gateway AMF selects a target AMF based on the AMF information received in step (42).

[0336] Step (48): Perform subsequent handover procedures.

[0337] It should be noted that the implementation of the terminal's handover from 5G to 4G is similar to the implementation of the terminal's handover from 4G to 5G. Interchange 4G and 5G in this embodiment, interchange eNB and gNB in this embodiment, and interchange MME and AMF in this embodiment.

[0338] In addition, the implementation of the terminal's handover from 5G to 6G is similar to the implementation of the terminal's handover from 4G to 5G. Replace 5G with 6G in this embodiment, replace 4G with 5G in this embodiment, replace eNB with gNB in this embodiment, replace gNB with 6G CN in this embodiment, replace MME with AMF in this embodiment, and replace AMF with 6GCN in this embodiment.

[0339] It should be noted that through the Gateway AMF, it is possible to assist in obtaining the target AMF for handover without changing the MME.

[0340] Through the above embodiments, when switching from one network to another network, it is still possible to switch to the original serving core network element / function and / or the original serving base station.

[0341] For the operation execution method provided in the embodiments of the present application, the execution subject may be an operation execution device. In the embodiments of the present application, taking the operation execution device as an example to execute the operation execution method, the operation execution device provided in the embodiments of the present application is described.

[0342] Please refer to Figure 11 , Figure 11 which is a structural diagram of an operation execution device provided in the embodiments of the present application. The first core network node includes the operation execution device. As Figure 11 shown, the operation execution device 500 includes:

[0343] An obtaining module 501, configured to obtain first information, where the first information is information related to the first network system where the terminal camps or connects;

[0344] An execution module 502, configured to perform a first operation based on the first information;

[0345] The first operation includes at least one of the following:

[0346] Select a target core network node;

[0347] Switch to the target core network node;

[0348] Redirect to the target core network node;

[0349] Switch to the first network system;

[0350] Redirect to the first network system;

[0351] Wherein, the network system where the target core network node is located is the first network system.

[0352] Optionally, before the first core network node performs a first operation based on the first information,

[0353] The first core network node receives handover information or redirection information from a first access network node; or

[0354] The handover operation of the first core network node is invoked by a first access network node; or

[0355] The redirection operation of the first core network node is invoked by a first access network node; or

[0356] The handover operation of the first core network node is invoked by a third core network node; or

[0357] The redirection operation of the first core network node is invoked by a third core network node; or

[0358] The first core network node receives handover information or redirection information from a third core network node.

[0359] Optionally, the first information is related to the access network of the first network system, and the obtaining module is specifically configured to perform at least one of the following:

[0360] Receive the first information from the terminal;

[0361] Receive the first information from a first access network node.

[0362] Optionally, the first information is related to the core network of the first network system, and the obtaining module is specifically configured to perform at least one of the following:

[0363] Receive the first information from a second core network node;

[0364] Receive the first information from the terminal;

[0365] Receive the first information from a first access network node.

[0366] Optionally, the first information is related to the core network of the first network system;

[0367] The obtaining module is specifically configured to: receive the first information from the second core network node;

[0368] Wherein, before receiving the first information from the second core network node,

[0369] the first core network node receives handover information or redirection information from the first access network node; or

[0370] the handover operation of the first core network node is invoked by the first access network node; or

[0371] the redirection operation of the first core network node is invoked by the first access network node; or

[0372] the handover operation of the first core network node is invoked by the third core network node; or

[0373] the redirection operation of the first core network node is invoked by the third core network node; or

[0374] the first core network node receives handover information or redirection information from the third core network node.

[0375] Optionally, the obtaining module is specifically configured to at least one of the following:

[0376] send a subscription request to the second core network node and receive the first information sent or notified by the second core network node;

[0377] invoke the subscription operation of the second core network node and obtain the first information returned or notified by the second core network node;

[0378] send a query request to the second core network node and receive the first information sent by the second core network node;

[0379] invoke the query operation of the second core network node and obtain the returned first information.

[0380] Optionally, the obtaining module is specifically configured to:

[0381] receive the first information sent by the first access network node through the third core network node.

[0382] Optionally, the network system where the first access network node is located is different from the first network system; or,

[0383] the first access network node and the first core network node belong to the same network system; or,

[0384] the network system where the third core network node is located is different from the first network system; or,

[0385] The third core network node and the first core network node belong to different network systems; or,

[0386] The network system where the first core network node is located is different from the first network system.

[0387] Optionally, the first information includes at least one of the following:

[0388] Access network related information of the first network system;

[0389] Core network related information of the first network system.

[0390] Optionally, the core network related information includes: identification information of the fourth core network node; or

[0391] The access network related information includes at least one of the following:

[0392] Cell information;

[0393] Cell group information;

[0394] Base station information;

[0395] Area information.

[0396] Optionally, the fourth core network node is a core network node of the first network system; or

[0397] The cell corresponding to the cell information belongs to the first network system; or

[0398] The cell group corresponding to the cell group information belongs to the first network system; or

[0399] The base station corresponding to the base station information belongs to the first network system.

[0400] The operation execution device in the embodiments of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal or other devices other than the terminal. Exemplarily, the terminal may include, but is not limited to, the types of the terminal 11 listed above, and other devices may be a server, a Network Attached Storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0401] The operation execution device provided in the embodiments of the present application can implement Figure 2 each process implemented by the method embodiments and achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0402] Please refer toFigure 12 , Figure 12 is a structural diagram of an information sending device provided by an embodiment of the present application. The second core network node includes the information sending device. As Figure 12 shown, the information sending device 600 includes:

[0403] A first sending module 601, configured to send first information to a first core network node, where the first information is information related to a first network system in which a terminal camps or is connected.

[0404] Optionally, the first sending module is specifically configured to perform at least one of the following:

[0405] Receive a subscription request sent by the first core network node, and send or notify the first information to the first core network node based on the subscription request;

[0406] Return or notify the first information to the first core network node based on a subscription operation invoked by the first core network node;

[0407] Receive a query request sent by the first core network node, and send the first information to the first core network node based on the query request;

[0408] Return the first information to the first core network node based on a query operation invoked by the first core network node.

[0409] The information sending device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal or other devices other than a terminal. Exemplarily, the terminal may include, but is not limited to, the types of the terminal 11 listed above, and other devices may be a server, a Network Attached Storage (NAS), etc., which are not specifically limited in the embodiment of the present application.

[0410] The information sending device provided by the embodiment of the present application can implement Figure 3 each process implemented by the method embodiment and achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0411] Please refer to Figure 13 , Figure 13 is a structural diagram of an information sending device provided by an embodiment of the present application. The first access network node includes the information sending device. As Figure 13 shown, the information sending device 700 includes:

[0412] A receiving module 701, configured to receive a first piece of information sent by a terminal, where the first piece of information is information related to a first network system to which the terminal camps or connects;

[0413] A second sending module 702, configured to send the first piece of information to a first core network node.

[0414] Optionally, the second sending module is specifically configured to perform at least one of the following:

[0415] Send the first piece of information to the first core network node through a handover process;

[0416] Send handover information or redirection information to the first core network node, where the handover information or redirection information carries the first piece of information;

[0417] Invoke a handover operation or a redirection operation of the first core network node, where the first piece of information is used as a parameter for invoking the handover operation or the redirection operation.

[0418] The information sending device in the embodiments of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal or other devices other than the terminal. Exemplarily, the terminal may include, but is not limited to, the types of the terminal 11 listed above, and other devices may be a server, a Network Attached Storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0419] The information sending device provided in the embodiments of the present application can implement Figure 4 each process implemented by the method embodiments and achieve the same technical effects. To avoid repetition, details are not described here again.

[0420] Please refer to Figure 14 , Figure 14 which is a structural diagram of an information sending device provided in the embodiments of the present application. The terminal includes the information sending device. As Figure 14 shown, the information sending device 800 includes:

[0421] A third sending module 801, configured to send a first piece of information to a first access network node or a first core network node, where the first piece of information is information related to a first network system to which the terminal camps or connects.

[0422] The information sending device in the embodiments of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal or other devices other than the terminal. Exemplarily, the terminal may include, but is not limited to, the types of the above-listed terminal 11, and other devices may be a server, a Network Attached Storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0423] The information sending device provided in the embodiments of the present application can implement Figure 5 each process implemented by the method embodiments and achieve the same technical effects. To avoid repetition, they will not be elaborated here.

[0424] Optionally, as Figure 15 shown, the embodiments of the present application further provide a communication device 900, including a processor 901 and a memory 902. A program or instruction that can run on the processor 901 is stored on the memory 902. For example, when the communication device 900 is a terminal, when the program or instruction is executed by the processor 901, each step of the above method embodiment for operation execution applied to the terminal is implemented, and the same technical effects can be achieved. To avoid repetition, they will not be elaborated here. When the communication device 900 is a first core network node, when the program or instruction is executed by the processor 901, each step of the above method embodiment for information sending applied to the first core network node is implemented, and the same technical effects can be achieved. To avoid repetition, they will not be elaborated here. When the communication device 900 is a second core network node, when the program or instruction is executed by the processor 901, each step of the above method embodiment for information sending applied to the second core network node is implemented, and the same technical effects can be achieved. To avoid repetition, they will not be elaborated here. When the communication device 900 is a first access network node, when the program or instruction is executed by the processor 901, each step of the above method embodiment for information sending applied to the first access network node is implemented, and the same technical effects can be achieved. To avoid repetition, they will not be elaborated here.

[0425] The embodiments of the present application further provide a terminal, including a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run a program or instruction to implement the steps in the method embodiments as Figure 3 shown. This terminal embodiment corresponds to the above terminal-side method embodiments. Each implementation process and implementation manner of the above method embodiments can be applied to this terminal embodiment, and the same technical effects can be achieved.

[0426] Specifically, Figure 16 is a schematic diagram of the hardware structure of a terminal for implementing the embodiments of the present application.

[0427] The terminal 1000 includes, but is not limited to, at least some components such as a radio frequency unit 1001, a network module 1002, an audio output unit 1003, an input unit 1004, a sensor 1005, a display unit 1006, a user input unit 1007, an interface unit 1008, a memory 1009, and a processor 1010.

[0428] Those skilled in the art can understand that the terminal 1000 may further include a power supply (such as a battery) for supplying power to each component. The power supply can be logically connected to the processor 1010 through a power management system, so as to implement functions such as management of charging, discharging, and power consumption management through the power management system. Figure 16 The terminal structure shown does not limit the terminal. The terminal may include more or fewer components than shown, or combine some components, or have different component arrangements, which will not be elaborated here.

[0429] It should be understood that in the embodiments of the present application, the input unit 1004 may include a graphics processing unit (GPU) 10041 and a microphone 10042. The GPU 10041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 1006 may include a display panel 10061, and the display panel 10061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1007 includes at least one of a touch panel 10071 and other input devices 10072. The touch panel 10071 is also called a touch screen. The touch panel 10071 may include two parts: a touch detection device and a touch controller. The other input devices 10072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be elaborated here.

[0430] In the embodiments of the present application, after the radio frequency unit 1001 receives downlink data from a network side device, it can be transmitted to the processor 1010 for processing; in addition, the radio frequency unit 1001 can send uplink data to the network side device. Generally, the radio frequency unit 1001 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0431] The memory 1009 can be used to store software programs or instructions and various data. The memory 1009 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data. Among them, the first storage area may store an operating system, application programs or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 1009 may include a volatile memory or a non-volatile memory, or, the memory 1009 may include both a volatile and a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable ROM (PROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static RAM (SRAM), a dynamic RAM (DRAM), a synchronous DRAM (SDRAM), a double data rate SDRAM (DDR SDRAM), an enhanced SDRAM (ESDRAM), a synch link DRAM (SLDRAM), and a direct rambus RAM (DRRAM). The memory 1009 in the embodiments of the present application includes, but is not limited to, these and any other suitable types of memories.

[0432] The processor 1010 may include one or more processing units; optionally, the processor 1010 integrates an application processor and a modem processor. Among them, the application processor mainly processes operations related to the operating system, user interface, and application programs, etc., and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above-mentioned modem processor may not be integrated into the processor 1010 either.

[0433] Among them, the radio frequency unit 1001 is used for:

[0434] Sending first information to a first access network node or a first core network node, where the first information is information related to the first network system in which the terminal camps or is connected.

[0435] It can be understood that the implementation processes of the implementation manners mentioned in this embodiment may refer to the method embodimentsFigure 3 For the relevant descriptions and to achieve the same or corresponding technical effects, to avoid repetition, they will not be elaborated here.

[0436] Specifically, the terminal in the embodiment of the present application further includes: instructions or programs stored in the memory 1009 and executable on the processor 1010, and the processor 1010 calls the instructions or programs in the memory 1009 to execute Figure 4 the methods executed by the modules shown, and achieve the same technical effects. To avoid repetition, they will not be elaborated here.

[0437] The embodiment of the present application further provides a network-side device, including a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement as Figure 3 or Figure 4 or Figure 5 the steps of the method embodiment shown. The embodiment of this network-side device corresponds to the above information sending method embodiment. Each implementation process and implementation manner of the above method embodiment can be applied to the embodiment of this network-side device, and can achieve the same technical effects.

[0438] Specifically, the embodiment of the present application further provides a network-side device. As Figure 17 shown, the network-side device 1100 includes: an antenna 1101, a radio frequency device 1102, a baseband device 1103, a processor 1104, and a memory 1105. The antenna 1101 is connected to the radio frequency device 1102. In the uplink direction, the radio frequency device 1102 receives information through the antenna 1101 and sends the received information to the baseband device 1103 for processing. In the downlink direction, the baseband device 1103 processes the information to be sent and sends it to the radio frequency device 1102. After processing the received information, the radio frequency device 1102 sends it out through the antenna 1101.

[0439] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 1103, and the baseband device 1103 includes a baseband processor.

[0440] The baseband device 1103 may include, for example, at least one baseband board, and multiple chips are arranged on the baseband board. As Figure 17 shown, one of the chips is, for example, a baseband processor, which is connected to the memory 1105 through a bus interface to call the program in the memory 1105 and execute the network device operations shown in the above method embodiments.

[0441] This network-side device may further include a network interface 1106, and this interface is, for example, a Common Public Radio Interface (CPRI).

[0442] Specifically, the network - side device 1100 in the embodiments of the present application further includes: instructions or programs stored in the memory 1105 and executable on the processor 1104. The processor 1104 calls the instructions or programs in the memory 1105 to execute Figure 11 or Figure 12 or Figure 13 the methods executed by the respective modules shown, and achieve the same technical effects. To avoid repetition, they will not be elaborated here.

[0443] The embodiments of the present application further provide a readable storage medium. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, they implement each process of the above - mentioned operation execution method or information sending method embodiments, and can achieve the same technical effects. To avoid repetition, they will not be elaborated here.

[0444] Wherein, the processor is the processor in the terminal described in the above - mentioned embodiments. The readable storage medium includes computer - readable storage media, such as computer read - only memory ROM, random access memory RAM, magnetic disks, or optical discs, etc. In some examples, the readable storage medium may be a non - transient readable storage medium.

[0445] The embodiments of the present application further provide a chip. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement each process of the above - mentioned operation execution method or information sending method embodiments, and can achieve the same technical effects. To avoid repetition, they will not be elaborated here.

[0446] It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system - on - chip, system chip, chip system, or system - on - a - chip, etc.

[0447] The embodiments of the present application further provide a computer program / program product. The computer program / program product is stored in a storage medium. The computer program / program product is executed by at least one processor to implement each process of the above - mentioned operation execution method or information sending method embodiments, and can achieve the same technical effects. To avoid repetition, they will not be elaborated here.

[0448] The embodiments of the present application further provide an operation execution system, including: a terminal, a first core network node, a second core network node, and a first access network node. The first core network node can be used to execute the steps of the above - mentioned operation execution method. The second core network node can be used to execute the steps of the above - mentioned information sending method applied to the second core network node. The first access network node can be used to execute the steps of the above - mentioned information sending method applied to the first access network node. The terminal can be used to execute the steps of the above - mentioned information sending method applied to the terminal.

[0449] It should be noted that in this document, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the existence of additional identical elements in the process, method, article or device comprising that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0450] From the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of computer software products plus the necessary general hardware platforms, and of course, they can also be implemented by hardware. The computer software products are stored in storage media (such as ROM, RAM, magnetic disks, optical discs, etc.) and include several instructions for causing terminals or network-side devices to execute the methods described in various embodiments of the present application.

[0451] It should be noted that there is no exclusive parallel relationship between the various embodiments and the various optional embodiments of the present application. The various embodiments and the various optional embodiments of the present application can be partially or fully combined with each other, or partially or fully replaced. For example, different embodiments can be combined together to form another embodiment, and different optional embodiments can also be combined together to form another embodiment.

[0452] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms of embodiments without departing from the purpose of the present application and the scope protected by the claims. These embodiments are all within the protection scope of the present application.

Claims

1. A method for performing an operation, characterized in that, it includes: A first core network node obtains first information, where the first information is information related to a first network system in which a terminal camps or connects; The first core network node performs a first operation based on the first information; The first operation includes at least one of the following: Select a target core network node; Switch to the target core network node; Redirect to the target core network node; Switch to the first network system; Redirect to the first network system; wherein, the network system where the target core network node is located is the first network system.

2. The method according to claim 1, characterized in that, before the first core network node performs the first operation based on the first information, the method further includes: The first core network node receives a handover message or a redirection message from a first access network node; or The handover operation of the first core network node is invoked by a first access network node; or The redirection operation of the first core network node is invoked by a first access network node; or The handover operation of the first core network node is invoked by a third core network node; or The redirection operation of the first core network node is invoked by a third core network node; or The first core network node receives a handover message or a redirection message from a third core network node.

3. The method according to claim 1 or 2, characterized in that, the first information is related to the access network of the first network system, and the first core network node obtaining the first information includes at least one of the following: The first core network node receives the first information from the terminal; The first core network node receives the first information from a first access network node.

4. The method according to claim 1 or 2, characterized in that, the first information is related to the core network of the first network system, and the first core network node obtaining the first information includes at least one of the following: The first core network node receives the first information from a second core network node; The first core network node receives the first information from the terminal; The first core network node receives the first information from a first access network node.

5. The method according to claim 1, characterized in that, the first information is related to the core network of the first network system; the first core network node obtaining the first information includes: the first core network node receives the first information from a second core network node; wherein, before the first core network node receives the first information from the second core network node, the method further includes: The first core network node receives a handover message or a redirection message from a first access network node; or The handover operation of the first core network node is invoked by a first access network node; or The redirection operation of the first core network node is invoked by a first access network node; or The handover operation of the first core network node is invoked by a third core network node; or The redirection operation of the first core network node is invoked by a third core network node; or The first core network node receives a handover message or a redirection message from a third core network node.

6. The method according to claim 4 or 5, characterized in that, The first core network node receives the first information from the second core network node, including at least one of the following: The first core network node sends a subscription request to the second core network node and receives the first information sent or notified by the second core network node; The first core network node invokes the subscription operation of the second core network node and obtains the first information returned or notified by the second core network node; The first core network node sends a query request to the second core network node and receives the first information sent by the second core network node; The first core network node invokes the query operation of the second core network node and obtains the returned first information.

7. According to the method described in claim 3, wherein, the first core network node receives the first information from the first access network node, including: The first core network node receives the first information sent by the first access network node through the third core network node.

8. According to the method described in any one of claims 1-7, wherein, the network system where the first access network node is located is different from the first network system; or, the first access network node and the first core network node belong to the same network system; or, the network system where the third core network node is located is different from the first network system; or, the third core network node and the first core network node belong to different network systems; or, the network system where the first core network node is located is different from the first network system.

9. According to the method described in any one of claims 1-8, wherein, the first information includes at least one of the following: Access network related information of the first network system; Core network related information of the first network system.

10. According to the method described in claim 9, wherein, the core network related information includes: identification information of the fourth core network node; or the access network related information includes at least one of the following: Cell information; Cell group information; Base station information; Area information.

11. According to the method described in claim 10, wherein, the fourth core network node is a core network node of the first network system; or the cell corresponding to the cell information belongs to the first network system; or the cell group corresponding to the cell group information belongs to the first network system; or the base station corresponding to the base station information belongs to the first network system.

12. An information sending method, wherein, including: The second core network node sends the first information to the first core network node, and the first information is information related to the first network system where the terminal camps or connects.

13. According to the method described in claim 12, wherein, the second core network node sends the first information to the first core network node, including at least one of the following: The second core network node receives the subscription request sent by the first core network node and sends or notifies the first information to the first core network node based on the subscription request; The second core network node returns or notifies the first information to the first core network node based on the subscription operation invoked by the first core network node; The second core network node receives the query request sent by the first core network node, and sends the first information to the first core network node based on the query request; The second core network node returns the first information to the first core network node based on the query operation invoked by the first core network node.

14. An information sending method, Characterized in that, It includes: The first access network node receives the first information sent by the terminal, and the first information is information related to the first network system where the terminal camps or is connected; The first access network node sends the first information to the first core network node.

15. The method according to claim 14, Characterized in that, The first access network node sending the first information to the first core network node includes at least one of the following: The first access network node sends the first information to the first core network node through a handover process; The first access network node sends handover information or redirection information to the first core network node, and the handover information or redirection information carries the first information; The first access network node invokes the handover operation or redirection operation of the first core network node, where the first information is used as a parameter for invoking the handover operation or redirection operation.

16. An information sending method, Characterized in that, It includes: The terminal sends the first information to the first access network node or the first core network node, and the first information is information related to the first network system where the terminal camps or is connected.

17. An operation execution method, Characterized in that, It includes: The terminal sends the first information to the first access network node, and the first information is information related to the first network system where the terminal camps or is connected; The first access network node receives the first information sent by the terminal; The first access network node sends the first information to the first core network node; The first core network node executes a first operation based on the first information; The first operation includes at least one of the following: Select a target core network node; Switch to the target core network node; Redirect to the target core network node; Switch to the first network system; Redirect to the first network system; Wherein, the network system where the target core network node is located is the first network system.

18. An operation execution device, Characterized in that, The first core network node includes the operation execution device, and the device includes: An acquisition module, configured to acquire first information, where the first information is information related to the first network system where the terminal camps or is connected; An execution module, configured to execute a first operation based on the first information; The first operation includes at least one of the following: Select a target core network node; Switch to the target core network node; Redirect to the target core network node; Switch to the first network system; Redirect to the first network system; Wherein, the network system where the target core network node is located is the first network system.

19. An information sending device, Characterized in that, The second core network node includes the information sending device, and the device includes: A first sending module, configured to send first information to a first core network node, where the first information is information related to a first network system to which a terminal camps or connects.

20. An information sending device, characterized in that the first access network node includes the information sending device, and the device includes: a receiving module, configured to receive first information sent by a terminal, where the first information is information related to a first network system to which the terminal camps or connects; a second sending module, configured to send the first information to a first core network node.

21. An information sending device, characterized in that the terminal includes the information sending device, and the device includes: a third sending module, configured to send first information to a first access network node or a first core network node, where the first information is information related to a first network system to which the terminal camps or connects.

22. A network-side device, characterized in that it includes a processor and a memory, where the memory stores a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, the steps of the operation execution method according to any one of claims 1-11 are implemented; or, the steps of the information sending method according to claim 12 or 13 are implemented; or, the steps of the information sending method according to claim 14 or 15 are implemented.

23. A terminal, characterized in that it includes a processor and a memory, where the memory stores a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, the steps of the information sending method according to claim 16 are implemented.

24. A chip, characterized in that the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a program or instruction to implement the steps of the operation execution method according to any one of claims 1-11; or, the steps of the information sending method according to claim 12 or 13 are implemented; or, the steps of the information sending method according to claim 14 or 15 are implemented; or, the steps of the information sending method according to claim 16 are implemented.

25. A readable storage medium, characterized in that a program or instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the operation execution method according to any one of claims 1-11 are implemented; or, the steps of the information sending method according to claim 12 or 13 are implemented; or, the steps of the information sending method according to claim 14 or 15 are implemented; or, the steps of the information sending method according to claim 16 are implemented.

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