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

Abstract

The present application belongs to the technical field of communication. Disclosed are an operation execution method, an information sending method, an apparatus and a related device. The operation execution method in the embodiments of the present application comprises: a first core network node learning first information, wherein the first information is information related to a first network system where a terminal resides or which the terminal is connected with; and the first core network node executing a first operation on the basis of the first information, wherein the first operation comprises 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, and redirecting to the first network system, and a network system where the target core network node is located is the first network system.

Description

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

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese Patent Application No. 202311594209.0 filed in China on November 27, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application belongs to the field of communication technology, and specifically relates to an operation execution method, an information sending method, an apparatus and related equipment. Background Art

[0004] In related technologies, a terminal can reside in a first network system and a second network system at the same time. When the terminal switches or redirects from the second network system to the first network system, since the terminal resides in the first network system, the probability of a communication failure in the communication system after switching or redirecting is high. Summary of the Invention

[0005] The embodiments of the present application provide an operation execution method, an information sending method, an apparatus and related equipment, which can solve the problem of a high probability of communication failure in the communication system during network switching or redirection.

[0006] In a first aspect, an operation execution method is provided, comprising:

[0007] The first core network node obtains first information, where the first information is information related to a first network system in which the terminal resides or is connected;

[0008] The first core network node performs a first operation based on the first information;

[0009] 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; wherein the network system where the target core network node is located is the first network system.

[0010] In a second aspect, a method for sending information is provided, comprising:

[0011] The second core network node sends first information to the first core network node, where the first information is information related to a first network system in which the terminal resides or is connected.

[0012] In a third aspect, a method for sending information is provided, comprising:

[0013] The first access network node receives first information sent by the terminal, where the first information is information related to a first network system in which the terminal resides or is connected;

[0014] The first access network node sends the first information to the first core network node.

[0015] In a fourth aspect, a method for sending information is provided, comprising:

[0016] 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 resides or is connected.

[0017] In a fifth aspect, an operation execution method is provided, comprising:

[0018] The terminal sends first information to the first access network node, where the first information is information related to a first network system in which the terminal resides or is connected;

[0019] The first access network node receives the first information sent by the terminal;

[0020] The first access network node sends the first information to the first core network node;

[0021] The first core network node performs a first operation based on the first information;

[0022] 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; wherein the network system where the target core network node is located is the first network system.

[0023] In a sixth aspect, an operation execution device is provided, where the first core network node includes the operation execution device, and the device includes:

[0024] an acquisition module, configured to acquire first information, where the first information is information related to a first network system in which the terminal resides or is connected;

[0025] an execution module, configured to execute a first operation based on the first information;

[0026] 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; wherein the network system where the target core network node is located is the first network system.

[0027] In a seventh aspect, an information sending device is provided, where the second core network node includes the information sending device, and the device includes:

[0028] The first sending module is used to send first information to the first core network node, where the first information is information related to the first network system where the terminal resides or is connected.

[0029] In an eighth aspect, an information sending device is provided. The first access network node includes the information sending device, and the device includes:

[0030] a receiving module, configured to receive first information sent by a terminal, where the first information is information related to a first network system in which the terminal resides or is connected;

[0031] The second sending module is used to send the first information to the first core network node.

[0032] In a ninth aspect, an information sending device is provided. The terminal includes the information sending device, and the device includes:

[0033] The third sending module is used to send 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 where the terminal resides or is connected.

[0034] In the tenth aspect, a network side device is provided, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the first aspect, the second aspect, or the third aspect are implemented.

[0035] In the eleventh aspect, a terminal is provided, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the programs or instructions are executed by the processor, the steps of the method described in the fourth aspect are implemented.

[0036] In a twelfth aspect, a first core network node is provided, including a processor and a communication interface, wherein:

[0037] The communication interface is used to: obtain first information, where the first information is information related to a first network system in which the terminal resides or is connected;

[0038] The processor is configured to: perform a first operation based on the first information;

[0039] 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; wherein the network system where the target core network node is located is the first network system.

[0040] In a thirteenth aspect, a second core network node is provided, comprising a processor and a communication interface, wherein the communication interface is configured to:

[0041] First information is sent to the first core network node, where the first information is information related to the first network system in which the terminal resides or is connected.

[0042] In a fourteenth aspect, a first access network node is provided, comprising a processor and a communication interface, wherein the communication interface is configured to:

[0043] receiving first information sent by a terminal, where the first information is information related to a first network system in which the terminal resides or is connected;

[0044] Send the first information to the first core network node.

[0045] In a fifteenth aspect, a terminal is provided, comprising a processor and a communication interface, wherein the communication interface is configured to:

[0046] First information is sent 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 resides or is connected.

[0047] In the 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.

[0048] In the seventeenth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented, or the steps of the method described in the third aspect are implemented, or the steps of the method described in the fourth aspect are implemented.

[0049] In the eighteenth aspect, a chip is provided, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the method described in the first aspect, or the method described in the second aspect, or the method described in the third aspect, or the method described in the fourth aspect.

[0050] In the nineteenth aspect, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to implement the steps of the method described in the first aspect, or the steps of the method described in the second aspect, or the steps of the method described in the third aspect, or the steps of the method described in the fourth aspect.

[0051] 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 where a terminal resides or is connected; 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; wherein 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 information related to the first network system where the terminal resides or is connected is considered for switching or redirecting, supporting the adaptation of the selected, switched, or redirected core network function to the information related to the first network system where the terminal resides or is connected, reducing the probability of communication failures in the communication system, and improving the stability of the communication system. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] FIG1 is a block diagram of a wireless communication system to which embodiments of the present application may be applied;

[0053] FIG2 is a flowchart of an operation execution method provided in an embodiment of the present application;

[0054] FIG3 is a flowchart of a method for sending information provided in an embodiment of the present application;

[0055] FIG4 is a second flowchart of an information sending method provided in an embodiment of the present application;

[0056] FIG5 is a third flowchart of an information sending method provided in an embodiment of the present application;

[0057] FIG6 is a schematic diagram of a network switching process in the related art;

[0058] FIG7 is a schematic diagram of a network switching process according to an embodiment of the present application;

[0059] FIG8 is a second schematic diagram of a network switching process provided in an embodiment of the present application;

[0060] FIG9 is a third schematic diagram of a network switching process provided in an embodiment of the present application;

[0061] FIG10 is a fourth schematic diagram of a network switching process provided in an embodiment of the present application;

[0062] FIG11 is a schematic structural diagram of an operation execution device provided in an embodiment of the present application;

[0063] FIG12 is a schematic diagram of a structure of an information sending device according to an embodiment of the present application;

[0064] FIG13 is a second structural diagram of an information sending device provided in an embodiment of the present application;

[0065] FIG14 is a third structural diagram of an information sending device provided in an embodiment of the present application;

[0066] FIG15 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0067] FIG16 is a schematic structural diagram of a terminal provided in an embodiment of the present application;

[0068] FIG17 is a schematic structural diagram of a network-side device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0069] The following will be combined with the accompanying drawings in the embodiments of this application to clearly describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0070] The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, 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 generally of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "or" in this application represents at least one of the connected objects. For example, "A or B" covers three options, namely, Option 1: including A but not including B; Option 2: including B but not including A; Option 3: including both A and B. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0071] The term "indication" in this application can be either a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, the operation to be performed, or the requested result, etc. in the instruction sent; an indirect indication can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the operation to be performed or the requested result, etc. based on the judgment result.

[0072] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but 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 the present application are often used interchangeably, and the technology described can be used for the systems and radio technologies mentioned above, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and NR terminology is used in most of the following description, but these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) systems. th Generation, 6G) communication system.

[0073] FIG1 is a block diagram of a wireless communication system applicable to an embodiment of the present application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (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 (Wearable Device), an aircraft (Flight Vehicle), a vehicle-mounted device (VUE), a ship-mounted device, a pedestrian user equipment (PUE), a smart home (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), a game console, a personal computer (PC), an ATM, or a self-service machine, or other terminal-side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may include an access network node or a core network node. The access network node may also be called a radio access network (RAN) device, a radio access network function or a radio access network unit, and may 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 can 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 (home evolved Node B), Transmission Reception Point (TRP) or other appropriate terms in the relevant field. As long as the same technical effect is achieved, the base station is not limited to specific technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

[0074] The core network node may include but is not limited to at least one of the following: core network equipment, core network function, mobility management entity (MME), access mobility management function (AMF), session management function (SMF), user plane function (UPF), policy control function (PCF), policy and charging rules function unit (PCRF), edge application server discovery function (EASDF), unified data management (UDM), unified data repository (UDR), home subscriber server (HSS), centralized network configuration (CNC), network storage function (NRF), network exposure function (NEF), local NEF (L-NEF), binding support function (BSF), application function ( It should be noted that in the embodiments of the present application, only the core network node in the NR system is used as an example for introduction, and the specific type of the core network node is not limited.

[0075] The following, in combination with the accompanying drawings, describes in detail the operation execution method, information sending method, apparatus and related equipment provided by the embodiments of the present application through some embodiments and their application scenarios.

[0076] Referring to FIG. 2 , FIG. 2 is a flow chart of an operation execution method provided in an embodiment of the present application. As shown in FIG. 2 , the operation execution method includes the following steps:

[0077] Step 101: A first core network node obtains first information, where the first information is information related to a first network system in which a terminal resides or is connected.

[0078] Step 102: The first core network node performs a first operation based on the first information;

[0079] The first operation includes at least one of the following:

[0080] Select the target core network node;

[0081] Switch to the target core network node;

[0082] Redirect to the target core network node;

[0083] Switching to the first network system;

[0084] redirecting to the first network system;

[0085] The network system where the target core network node is located is the first network system.

[0086] In one implementation, the network system where the target core network node is located is the first network system.

[0087] In one implementation, the selected target core network node is used to switch to the first network system, or redirect to the first network system.

[0088] In addition, the network system where the first core network node is located and the first network system may be different network systems. The switching to the first network system may refer to switching from the network system where the first core network node is located to the first network system; and the redirecting to the first network system may refer to redirecting from the network system where the first core network node is located to the first network system.

[0089] In one embodiment, 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 associated with the access network related information or core network related information.

[0090] It should be noted that the first core network node may be a network device or a network function, and this embodiment does not limit the specific implementation of the first core network node. The target core network node may be a network device or a network function, and this embodiment does not limit the specific implementation of the target core network node.

[0091] 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 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 MME in the 4G network system.

[0092] 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 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.

[0093] 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 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.

[0094] 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 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.

[0095] It should be noted that the core network node can be a network device or a network function, and this embodiment does not limit the specific implementation of the core network node. For example, the newly added core network node can be a gateway AMF or a gateway MME.

[0096] In one embodiment, when the first information includes at least access network related information of a first network system in which the terminal resides or is connected, 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 access network related information of a first network system in which the terminal resides or is connected.

[0098] In one embodiment, when the first information includes at least core network related information of a first network system in which the terminal resides or is connected, the first core network node performs a first operation based on the first information, including:

[0099] The first core network node performs a first operation based on core network related information of a first network system in which the terminal resides or is connected.

[0100] 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 resides or is connected; 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; wherein the network system in which 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 information related to the first network system in which the terminal resides or is connected is considered for switching or redirecting, supporting the adaptation of the selected, switched, or redirected core network function to the information related to the first network system in which the terminal resides or is connected, thereby reducing the probability of communication failures in the communication system.

[0101] Optionally, before the first core network node performs a first operation based on the first information,

[0102] The first core network node receives handover information or redirection information from the first access network node; or

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

[0104] The redirection operation of the first core network node is called by the first access network node; or

[0105] The handover operation of the first core network node is invoked by a third core network node; or

[0106] The redirection operation of the first core network node is called by a third core network node; or

[0107] The first core network node receives switching information or redirection information from the third core network node.

[0108] In one embodiment, the first core network node performs a first operation based on the first information, including at least one of the following:

[0109] The first core network node receives handover information or redirection information from the first access network node, and performs the first operation;

[0110] The handover operation of the first core network node is called by the first access network node to perform the first operation;

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

[0112] The handover operation of the first core network node is called by a third core network node to perform the first operation;

[0113] The redirection operation of the first core network node is called by a third core network node to perform the first operation;

[0114] The first core network node receives switching information or redirection information from the third core network node and performs the first operation.

[0115] In one implementation, the first core network node performs a first operation based on the first information, including:

[0116] The first core network node performs the first operation based on the first information in a first situation;

[0117] The first situation includes any one of the following:

[0118] The first core network node receives handover information or redirection information from the first access network node;

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

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

[0121] The handover operation of the first core network node is called by a third core network node;

[0122] The redirection operation of the first core network node is called by a third core network node;

[0123] The first core network node receives switching information or redirection information from the third core network node.

[0124] In one embodiment, the first core network node may be an existing core network node in the network system. For example, 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 ​​the 4G network system. The first condition may include: the MME receiving handover information or redirection information from the eNB; or the MME's handover operation being invoked by the eNB; or the MME's redirection operation being invoked by the eNB. Alternatively, 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 ​​the 5G network system. The first condition may include: the AMF receiving handover information or redirection information from the gNB; or the AMF's handover operation being invoked by the gNB; or the AMF's redirection operation being invoked by the gNB.

[0125] In one embodiment, the first core network node may be a newly added core network node, for example, a gateway AMF, and the third core network node may be an existing core network node in the network system. For example, the first core network node may be a gateway AMF, and the third core network node may be an MME in a 4G network system. The first condition may include: the gateway AMF receiving handover information or redirection information from the MME; or, the handover operation of the gateway AMF being invoked by the MME; or, the redirection operation of the gateway AMF being invoked by the MME.

[0126] In this embodiment, when the first network function receives a switching 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 switch or redirect after receiving the switching message or redirection message from the first network device, considering the information related to the first network system in which the terminal resides or is connected, thereby reducing the probability of communication failure in the communication system.

[0127] In this embodiment, when the switching operation of the first network function is called by the third network function, the first network function performs the first operation based on the first information, so that after the third network function calls the switching operation of the first network function, the first network function considers the information related to the first network system where the terminal resides or is connected to perform switching or redirection, thereby reducing the probability of communication failure in the communication system.

[0128] In this embodiment, when the redirection operation of the first network function is called by the third network function, the first network function performs the first operation based on the first information, so that after the third network function calls the redirection operation of the first network function, the first network function considers the information related to the first network system where the terminal resides or is connected to switch or redirect, thereby reducing the probability of communication failure in the communication system.

[0129] In this embodiment, when the first network function receives a switching message or a redirection message from a third network function, the first network function performs a first operation based on the first information, so that the first network function can switch or redirect after receiving the switching message or redirection message from the third network function, considering the information related to the first network system in which the terminal resides or is connected, thereby reducing the probability of communication failure in the communication system.

[0130] Optionally, the first information is related to the access network of the first network system, and the first core network node acquires the first information, including at least one of the following:

[0131] The first core network node receives the first information from the terminal;

[0132] The first core network node receives the first information from a first access network node.

[0133] The first access network node may be a network device or a network function. This embodiment does not limit the specific implementation of the first access network node.

[0134] 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 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 is residing or connected is considered to be switched or redirected, and the core network function that supports selection, switching or redirection is adapted to the access network related information of the first network system where the terminal is residing or connected, thereby reducing the probability of communication failure in the communication system.

[0135] In this embodiment, 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, which is sent by the terminal, is considered for switching or redirecting, and the core network function that supports selection, switching or redirection is adapted to the access network related information of the first network system where the terminal resides or is connected, thereby reducing the probability of communication failure in the communication system.

[0136] Optionally, the first information is related to the core network of the first network system, and the first core network node acquires the first information, including at least one of the following:

[0137] The first core network node receives the first information from the second core network node;

[0138] The first core network node receives the first information from the terminal;

[0139] The first core network node receives the first information from a first access network node.

[0140] The second core network node may be a UDM or an HSS.

[0141] 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 switching or redirecting to the core network function or network of the first network system, the core network related information of the first network system where the terminal resides or is connected, which is sent by the second network function, is considered for switching or redirecting, and the core network function selected, switched or redirected is adapted to the core network related information of the first network system where the terminal resides or is connected, thereby reducing the probability of communication failures in the communication system.

[0142] 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 switching or redirecting to the core network function or network of the first network system, the core network related information of the first network system where the terminal resides or is connected is considered to be switched or redirected, and the core network function selected, switched or redirected is supported to adapt to the core network related information of the first network system where the terminal resides or is connected, thereby reducing the probability of communication failure in the communication system.

[0143] In this embodiment, 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 core network related information of the first network system where the terminal resides or is connected, which is sent by the first network device, is considered for switching or redirecting, and the core network function selected, switched or redirected is supported to adapt to the core network related information of the first network system where the terminal resides or is connected, thereby reducing the probability of communication failure in the communication system.

[0144] Optionally, the first information is related to a core network of the first network system;

[0145] The first core network node obtaining the first information includes: the first core network node receiving the first information from the second core network node;

[0146] Before the first core network node receives the first information from the second core network node,

[0147] The first core network node receives handover information or redirection information from the first access network node; or

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

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

[0150] The handover operation of the first core network node is invoked by a third core network node; or

[0151] The redirection operation of the first core network node is called by a third core network node; or

[0152] The first core network node receives switching information or redirection information from the third core network node.

[0153] Optionally, the first core network node receives the first information from the second core network node, including at least one of the following:

[0154] 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;

[0155] The first core network node calls a subscription operation of the second core network node, and obtains the first information returned or notified by the second core network node;

[0156] 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;

[0157] The first core network node invokes a query operation of the second core network node and obtains the returned first information.

[0158] In one embodiment, 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:

[0159] The first core network node receives the switching information or redirection information from the first access network node, first executes the subscription request, the subscription operation, the query request or the query operation, and then executes the first operation;

[0160] The handover operation of the first core network node is called by the first access network node, first executing the subscription request, the subscription operation, the query request or the query operation, and then executing the first operation;

[0161] The redirection operation of the first core network node is called by the first access network node, which first executes the subscription request, the subscription operation, the query request or the query operation, and then executes the first operation;

[0162] The handover operation of the first core network node is called by a third core network node, which first executes the subscription request, the subscription operation, the query request or the query operation, and then executes the first operation;

[0163] The redirection operation of the first core network node is called by a third core network node, which first executes the subscription request, the subscription operation, the query request or the query operation, and then executes the first operation;

[0164] The first core network node receives the switching information or the redirection information from the third core network node, first executes the subscription request, the subscription operation, the query request or the query operation, and then executes the first operation.

[0165] 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, so that the first network function can obtain information related to the first network system where the terminal resides or is connected based on the subscription request, and when switching or redirecting to the core network function or network of the first network system, the information related to the first network system where the terminal resides or is connected is taken into consideration for switching or redirecting.

[0166] In this implementation, the first network function calls a subscription operation of the second network function to the second network function, and receives the first information returned by the second network function based on the subscription operation, so that the first network function can obtain information related to the first network system where the terminal resides or is connected by calling the subscription operation, and when switching or redirecting to the core network function or network of the first network system, the information related to the first network system where the terminal resides or is connected is taken into consideration for switching or redirecting.

[0167] 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, so that the first network function can obtain information related to the first network system where the terminal resides or is connected based on the query request, and when switching or redirecting to the core network function or network of the first network system, the information related to the first network system where the terminal resides or is connected is taken into consideration for switching or redirecting.

[0168] In this embodiment, the first network function calls the query operation of the second network function and obtains the first information returned based on the query operation, so that the first network function can obtain information related to the first network system where the terminal resides or is connected by calling the query operation, and when switching or redirecting to the core network function or network of the first network system, the information related to the first network system where the terminal resides or is connected is considered for switching or redirecting.

[0169] Optionally, the first core network node receiving the first information from the first access network node includes:

[0170] The first core network node receives the first information sent by the first access network node through a third core network node.

[0171] Among them, the first core network node can 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 can be the MME in the 4G network system, and the first core network node can be a gateway MME or a gateway AMF.

[0172] In this implementation, by adding a first core network node, it is possible to assist in obtaining the first information without changing the third core network node.

[0173] Optionally, the network system where the first access network node is located is different from the first network system; or,

[0174] The first access network node and the first core network node belong to the same network system; or,

[0175] The network system where the third core network node is located is different from the first network system; or,

[0176] The third core network node and the first core network node belong to different network systems; or,

[0177] The network system where the first core network node is located is different from the first network system.

[0178] In one embodiment, the first core network node may be a newly added core network node or an existing core network node of the network system, and the network system in which the first access network node is located is different from the first network system. For example, if the first network system is a 5G network system and the terminal switches from a 4G network to a 5G network, the first access network node may be an eNB in ​​the 4G network system.

[0179] In one embodiment, the first core network node may be an existing core network node of 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.

[0180] In one embodiment, the first core network node may be a newly added core network node, and the network system in which the third core network node resides is different from the first network system. For example, if the first network system is a 5G network system and the terminal switches from a 4G network to a 5G network, the third core network node may be an MME in the 4G network system.

[0181] In one embodiment, 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.

[0182] In one embodiment, 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.

[0183] 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 in which the first core network node is located is different from the first network system. For example, if the first network system is a 5G network system and the terminal switches from a 4G network to a 5G network, the first core network node may be a gateway MME or an MME in the 4G network system.

[0184] Optionally, the first information includes at least one of the following:

[0185] Access network related information of the first network system;

[0186] Core network related information of the first network system.

[0187] Optionally, the core network related information includes: identification information of the fourth core network node; or

[0188] The access network related information includes at least one of the following:

[0189] Cell information;

[0190] Cell group information;

[0191] Base station information;

[0192] Regional information.

[0193] The fourth core network node may be a network device or a network function. This embodiment does not limit the specific implementation of the fourth core network node.

[0194] In one embodiment, 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 an MME in the 4G network system. The identification information of the fourth core network node may include: a globally unique MME identity (GUMMEI).

[0195] In one embodiment, 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 an AMF in the 5G network system, and the identification information of the fourth core network node may include: a globally unique AMF identity (Globally Unique AMF Identity, GUAMI).

[0196] 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 a 6G CN, and the identification information of the fourth core network node may include: GUAMI.

[0197] 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, and the identification information of the fourth core network node may include: GUAMI.

[0198] In one implementation, the fourth core network node is received by the terminal from the first network system.

[0199] In one implementation, the fourth core network node is a core network node serving the terminal. For example, the fourth core network node may be a core network node serving the terminal in the first network system.

[0200] In one embodiment, the target core network node may be the fourth core network node, and 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 the 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 the target core network node is the fourth core network node.

[0201] In one implementation, the cell group information may include a cell group identifier. For example, the cell group identifier may include a closed subscriber group (CSG) identifier (ID) or a closed access group (CAG) ID.

[0202] In one implementation, the area information may include an area identifier. For example, the area identifier may include a registration area (RA) identifier or a radio notification area (RNA) identifier.

[0203] In this embodiment, the core network-related information may include identification information of a fourth core network node, and the target core network node selected, switched, or redirected for the first operation may be the fourth core network node. Furthermore, the fourth core network node may be a core network node serving the terminal in the first network system, thereby enabling preferential selection of the fourth core network node originally serving the terminal for switching or redirection, thereby reducing the probability of communication failures in the communication system.

[0204] In this embodiment, the access network-related information may include cell information, thereby enabling preferential selection of a core network node associated with the cell information of the first network system in which the terminal resides or is connected for handover or redirection, thereby reducing the probability of communication failures in the communication system. For example, the cell information may include a cell identifier, and the target core network node for selection, handover, or redirection in the first operation may be a core network node connected to the cell corresponding to the cell identifier.

[0205] In this embodiment, the access network-related information may include cell group information, thereby enabling preferential selection of a core network node associated with the cell group information of the first network system in which the terminal resides or is connected for handover or redirection, thereby reducing the probability of communication failures in the communication system. For example, the cell group information may include a cell group identifier, and the target core network node for selection, handover, or redirection in the first operation may be a core network node connected to a cell in the cell group corresponding to the cell group identifier.

[0206] In this embodiment, the access network-related information may include base station information, thereby enabling preferential selection of a core network node associated with the base station information of the first network system in which the terminal resides or is connected for switching or redirection, thereby reducing the probability of communication failures in the communication system. For example, the base station information may include a base station identifier, and the target core network node for selection, switching, or redirection in the first operation may be a core network node connected to the base station corresponding to the base station identifier.

[0207] In this embodiment, the access network-related information may include regional information, thereby enabling preferential selection for handover or redirection of a core network node associated with the regional information of the first network system in which the terminal resides or is connected, thereby reducing the probability of communication failures in the communication system. For example, the regional information may include a regional identifier, and the target core network node for selection, handover, or redirection in the first operation may be a core network node connected to a cell or base station in a registration area or wireless notification area corresponding to the regional identifier.

[0208] Optionally, the second core network node is a core network node of the first network system; or

[0209] The cell corresponding to the cell information belongs to the first network system; or

[0210] The cell group corresponding to the cell group information belongs to the first network system; or

[0211] The base station corresponding to the base station information belongs to the first network system.

[0212] Referring to FIG3 , FIG3 is a flow chart of an information sending method provided in an embodiment of the present application. As shown in FIG3 , the information sending method includes the following steps:

[0213] Step 201: The second core network node sends first information to the first core network node, where the first information is information related to a first network system in which a terminal resides or is connected.

[0214] In one embodiment, the first information is used to perform a first operation;

[0215] The first operation includes at least one of the following:

[0216] Select the target core network node;

[0217] Switch to the target core network node;

[0218] Redirect to the target core network node;

[0219] Switching to the first network system;

[0220] redirecting to the first network system;

[0221] The network system where the target core network node is located is the first network system.

[0222] Optionally, the second core network node sends first information to the first core network node, including at least one of the following:

[0223] 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;

[0224] The second core network node returns or notifies the first information to the first core network node based on the subscription operation called by the first core network node;

[0225] 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;

[0226] The second core network node returns the first information to the first core network node based on the query operation called by the first core network node.

[0227] It should be noted that this embodiment is an implementation method of the second core network node side corresponding to the embodiment shown in Figure 2. Its specific implementation method can refer to the relevant description of the embodiment shown in Figure 2. To avoid repetition, this embodiment will not be repeated.

[0228] Referring to FIG. 4 , FIG. 4 is a flow chart of an information sending method provided in an embodiment of the present application. As shown in FIG. 4 , the information sending method includes the following steps:

[0229] Step 301: A first access network node receives first information sent by a terminal, where the first information is information related to a first network system in which the terminal resides or is connected.

[0230] Step 302: The first access network node sends the first information to the first core network node.

[0231] In one embodiment, the first information is used to perform a first operation;

[0232] The first operation includes at least one of the following:

[0233] Select the target core network node;

[0234] Switch to the target core network node;

[0235] Redirect to the target core network node;

[0236] Switching to the first network system;

[0237] redirecting to the first network system;

[0238] The network system where the target core network node is located is the first network system.

[0239] In one implementation, taking the first access network node as a base station as an example, the terminal may send first information to the base station, and the base station sends the first information to the core network when deciding to perform a handover operation.

[0240] Optionally, the first access network node sending the first information to the first core network node includes at least one of the following:

[0241] The first access network node sends the first information to the first core network node through a handover process;

[0242] The first access network node sends handover information or redirection information to the first core network node, where the handover information or redirection information carries the first information;

[0243] The first access network node invokes a switching operation or a redirection operation of the first core network node, wherein the first information is used as a parameter for invoking the switching operation or the redirection operation.

[0244] In one embodiment, the method further comprises:

[0245] The first access network node performs a second operation based on the first information;

[0246] The second operation includes at least one of the following:

[0247] Select the target cell;

[0248] Select the target base station;

[0249] Switch to the target cell;

[0250] Switching to the target base station;

[0251] Redirect to the target cell;

[0252] Redirect to the target base station;

[0253] Switching to the first network system;

[0254] redirecting to the first network system;

[0255] The first network system is different from the network system where the first access network node is located.

[0256] In one embodiment, the first access network node receiving the first information sent by the terminal includes any one of the following:

[0257] Receiving, by the first access network node, a measurement report sent by the terminal;

[0258] The first access network node receives the measurement report and terminal auxiliary information sent by the terminal.

[0259] In one embodiment, the measurement report includes at least one of the following:

[0260] Access network related information of the first network system where the terminal resides or is connected;

[0261] Core network related information of the first network system in which the terminal resides or is connected.

[0262] In one embodiment, the terminal auxiliary information includes at least one of the following:

[0263] Access network related information of the first network system where the terminal resides or is connected;

[0264] Core network related information of the first network system in which the terminal resides or is connected.

[0265] It should be noted that this embodiment is an implementation method on the first access network node side corresponding to the embodiment shown in FIG2 . For its specific implementation method, please refer to the relevant description of the embodiment shown in FIG2 . To avoid repeated description, this embodiment will not be described again.

[0266] 5 , which is a flow chart of a method for sending information provided by an embodiment of the present application. As shown in FIG5 , the method for sending information includes the following steps:

[0267] Step 401: A 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 resides or is connected.

[0268] In one embodiment, the first information is used to perform a first operation;

[0269] The first operation includes at least one of the following:

[0270] Select the target core network node;

[0271] Switch to the target core network node;

[0272] Redirect to the target core network node;

[0273] Switching to the first network system;

[0274] redirecting to the first network system;

[0275] The network system where the target core network node is located is the first network system.

[0276] In one implementation, the terminal sending the first information to the first access network node or the first core network node includes any one of the following:

[0277] The terminal sends a measurement report to the first access network node or the first core network node;

[0278] The terminal sends a measurement report and terminal auxiliary information to the first access network node or the first core network node.

[0279] In one embodiment, the measurement report includes at least one of the following:

[0280] Access network related information of the first network system where the terminal resides or is connected;

[0281] Core network related information of the first network system in which the terminal resides or is connected.

[0282] In one embodiment, the terminal auxiliary information includes at least one of the following:

[0283] Access network related information of the first network system where the terminal resides or is connected;

[0284] Core network related information of the first network system in which the terminal resides or is connected.

[0285] It should be noted that this embodiment is an implementation on the terminal side corresponding to the embodiment shown in FIG2 . For its specific implementation, please refer to the relevant description of the embodiment shown in FIG2 . To avoid repeated description, this embodiment will not be described again.

[0286] It should be noted that due to the incompleteness of 5G coverage, in some areas at the edge of 5G, the network signal is better under 4G coverage, so the terminal can choose dual resident. In related technologies, as shown in Figure 6, when a terminal is dual-resident and a handover occurs, the core network node that is switched to is likely not the core network node that originally served the terminal, resulting in a high probability of network system communication failure.

[0287] In the embodiment of the present application, when a handover occurs after a terminal dual-resides, the probability that the target core network node of the handover is the core network node that originally served the terminal is high, which can reduce the probability of network system communication failure. Furthermore, based on the assumption that handover is allowed under dual registration, the embodiment of the present application can support the target core network node of the handover being the core network node that originally served the terminal, facilitating context merging of the terminal and simplifying the context merging operation of the terminal.

[0288] The following describes the operation execution method and information sending method provided by the embodiments of the present application through several specific embodiments:

[0289] It should be noted that in the following embodiments, only 4G+5G dual registration is used as an example for illustration, and is not limited to the 4G+5G dual registration mode. For example, it can also be applied to 5G+6G dual registration and combinations of future mobile communication technologies.

[0290] In the following embodiments 1 and 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.

[0291] Example 1:

[0292] As shown in FIG7 , this embodiment is described by taking the terminal switching from 5G to 4G as an example.

[0293] Step 11: User Equipment (UE) resides on both 4G and 5G networks simultaneously, and the UE is in a connected state on 5G and can be in a connected state or an idle state on 4G.

[0294] 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 information about the MME serving the UE in 4G to the gNB (e.g., step 12a), for example, sending a GUMMEI through an RRC_UEAssistanceInformation message; or, the UE reports a measurement report to the 5G base station gNB (e.g., step 12b), where the measurement report includes information related to the 4G access network, for example, information about the 4G cell where the UE resides (e.g., cell identifier), indication information indicating that the reported measurement information is related to the UE's 4G residency, information about the base station where the UE resides (e.g., eNB ID), information about the 4G registration area where the UE resides, etc.; the measurement report may also include information related to the 4G core network, such as identification information of the MME serving the UE in 4G, such as a GUMMEI.

[0295] 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.

[0296] Step 14: Optionally, the gNB sends the MME information of the UE serving the 4G network to the AMF, such as the MME information contained in the information reported by the terminal received by the gNB in ​​step 12, or the MME information determined locally by the gNB. For example, the gNB may determine the MME information based on configuration-related information.

[0297] Step 15: Optionally, the AMF queries the UDM / HSS for the MME information of the UE serving 4G.

[0298] 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 locally determined by the AMF. The MME information locally determined by the AMF may be MME information determined based on the target eNB information and local configuration information.

[0299] Steps 17 to 19: Execute the subsequent switching process.

[0300] It should be noted that the AMF can also subscribe to the MME information of the UE serving 4G from the UDM / HSS. The MME information can be notified to the AMF by the UDM.

[0301] It should be noted that the implementation of terminal switching from 4G to 5G is similar to the implementation of terminal switching from 5G to 4G. The 4G and 5G in this embodiment are interchanged, the eNB and gNB in ​​this embodiment are interchanged, the MME and AMF in this embodiment are interchanged, and the GUMMEI in this embodiment is replaced with GUAMI.

[0302] In addition, the implementation of terminal switching from 5G to 6G is similar to the implementation of terminal switching from 5G to 4G, except that 5G in this embodiment is replaced with 6G, 4G in this embodiment is replaced with 5G, gNB in ​​this embodiment is replaced with a 6G base station, eNB in ​​this embodiment is replaced with gNB, AMF in this embodiment is replaced with 6G CN, MME in this embodiment is replaced with AMF, and GUMMEI in this embodiment is replaced with GUAMI.

[0303] Example 2:

[0304] As shown in FIG8 , this embodiment is described by taking the switching of a terminal from 5G to 4G as an example.

[0305] Step 21: The UE resides on both 4G and 5G networks simultaneously, and the UE is in connected state on 5G and can be in connected or idle state on 4G. During the UE registration process with 5G, or after 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.

[0306] 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 the registration of the MME under 4G already exists in the UDM / HSS, the UDM / HSS sends the MME information of the UE serving the 4G to the AMF. For example, the UDM / HSS sends the MME information of the UE serving the 4G to the AMF by responding to the subscription request, or sends the MME information of the UE serving the 4G to the AMF through Notification.

[0307] Step 23: The UE reports a measurement report to the 5G base station gNB. The measurement report may include information related to the 4G access network, such as the 4G cell information where the UE resides (such as the cell identifier), indication information for indicating that the reported measurement information is related to the UE's 4G residency, information about the base station where the UE resides (such as the eNB ID), and information about the 4G registration area where the UE resides.

[0308] Step 24: When the gNB decides to hand over the UE to 4G, it may, 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 handover, such as the eNB currently serving the UE or the eNB that can serve the UE.

[0309] Step 25: The gNB sends a handover request to the AMF.

[0310] Step 26: The AMF selects a target MME based on the MME information received in step 22.

[0311] Step 27: Execute the subsequent switching process.

[0312] It should be noted that the implementation of terminal switching from 4G to 5G is similar to the implementation of terminal switching from 5G to 4G. The 4G and 5G in this embodiment are interchanged, the eNB and gNB in ​​this embodiment are interchanged, the MME and AMF in this embodiment are interchanged, and the GUMMEI in this embodiment is replaced with GUAMI.

[0313] In addition, the implementation of terminal switching from 5G to 6G is similar to the implementation of terminal switching from 5G to 4G, except that 5G in this embodiment is replaced with 6G, 4G in this embodiment is replaced with 5G, gNB in ​​this embodiment is replaced with a 6G base station, eNB in ​​this embodiment is replaced with gNB, AMF in this embodiment is replaced with 6G CN, MME in this embodiment is replaced with AMF, and GUMMEI in this embodiment is replaced with GUAMI.

[0314] In the following third and fourth embodiments, 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.

[0315] Example 3:

[0316] As shown in FIG9 , this embodiment is described by taking the switching of a terminal from 4G to 5G as an example.

[0317] Step 31: The UE resides on 4G and 5G simultaneously, and the UE is in a connected state on 4G and can be in a connected state or an idle state on 5G.

[0318] Step 32: The UE reports a measurement report to the 4G base station eNB. The generation rule of the measurement report includes at least one of the following:

[0319] The first rule: the cell signal associated with the 5G resident cell is the strongest signal;

[0320] The second rule: cell signals associated with cells included in a 5G registration area are stronger than cell signals associated with cells included in a non-5G registration area.

[0321] For example, the UE may adopt the first rule when the 4G is in a connected state; and the UE may adopt the second rule when the 4G is in an idle state.

[0322] Step 33: The eNB selects a target cell based on the measurement report reported by the UE. It may select the UE's 5G resident cell as the target cell, or select a cell in the UE's 5G registration area as the target cell.

[0323] Step 34: The eNB sends a handover request to the MME.

[0324] Step 35: The MME sends a handover request to the gateway AMF based on the configuration.

[0325] Step 36: The gateway AMF queries the UDM / HSS for the AMF information of the serving UE.

[0326] Step 37: The gateway AMF selects a target AMF based on the AMF information received in step 36.

[0327] Step 38: The gateway AMF forwards the handover request to the target AMF.

[0328] Steps 39 to 310: Execute the subsequent switching process.

[0329] It should be noted that the gateway AMF can also subscribe to the MME information of the UE serving 5G from the UDM / HSS.

[0330] It should be noted that the implementation of terminal switching from 5G to 4G is similar to the implementation of terminal switching from 4G to 5G. The 4G and 5G in this embodiment are interchanged, the eNB and gNB in ​​this embodiment are interchanged, and the MME and AMF in this embodiment are interchanged.

[0331] In addition, the implementation of terminal switching from 5G to 6G is similar to the implementation of terminal switching from 4G to 5G. The 5G in this embodiment is replaced by 6G, the 4G in this embodiment is replaced by 5G, the eNB in ​​this embodiment is replaced by a 6G base station, the gNB in ​​this embodiment is replaced by a 6G CN, the MME in this embodiment is replaced by an AMF, and the AMF in this embodiment is replaced by a 6G CN.

[0332] Example 4:

[0333] As shown in FIG10 , this embodiment is described by taking the switching of a terminal from 4G to 5G as an example.

[0334] Step 41: The UE resides on both 4G and 5G networks simultaneously, and is in the connected state on 4G and can be either connected or idle on 5G. The Gateway AMF can subscribe to AMF change events from the UDM / HSS, or implicitly subscribe to AMF change events. Implicit subscription to AMF change events means that the UDM configures the corresponding Gateway AMF to subscribe to the event without explicitly executing the subscription process. For example, a group of AMFs can be configured to be associated with a specific Gateway AMF.

[0335] 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 the AMF registration under 5G already exists in the UDM / HSS, the UDM / HSS sends the AMF information to the 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.

[0336] Step 43: -Step 46: Same as steps 32-35 of embodiment 3.

[0337] Step 47: The gateway AMF selects a target AMF based on the AMF information received in step 42.

[0338] Step 48: Execute the subsequent switching process.

[0339] It should be noted that the implementation of terminal switching from 5G to 4G is similar to the implementation of terminal switching from 4G to 5G. The 4G and 5G in this embodiment are interchanged, the eNB and gNB in ​​this embodiment are interchanged, and the MME and AMF in this embodiment are interchanged.

[0340] In addition, the implementation of terminal switching from 5G to 6G is similar to the implementation of terminal switching from 4G to 5G. The 5G in this embodiment is replaced by 6G, the 4G in this embodiment is replaced by 5G, the eNB in ​​this embodiment is replaced by gNB, the gNB in ​​this embodiment is replaced by 6G CN, the MME in this embodiment is replaced by AMF, and the AMF in this embodiment is replaced by 6G CN.

[0341] It should be noted that the Gateway AMF is used to assist in obtaining the target AMF for switching without changing the MME.

[0342] The above embodiments can achieve handover from one network to another while still switching to the original serving core network element / function and / or the original serving base station.

[0343] The operation execution method provided in the embodiment of the present application can be executed by an operation execution device. In the embodiment of the present application, the operation execution device provided in the embodiment of the present application is described by taking the operation execution method executed by the operation execution device as an example.

[0344] Please refer to Figure 11, which is a structural diagram of an operation execution device provided in an embodiment of the present application. The first core network node includes the operation execution device. As shown in Figure 11, the operation execution device 500 includes:

[0345] An acquisition module 501 is configured to acquire first information, where the first information is information related to a first network system in which the terminal resides or is connected;

[0346] An execution module 502 is configured to execute a first operation based on the first information;

[0347] The first operation includes at least one of the following:

[0348] Select the target core network node;

[0349] Switch to the target core network node;

[0350] Redirect to the target core network node;

[0351] Switching to the first network system;

[0352] redirecting to the first network system;

[0353] The network system where the target core network node is located is the first network system.

[0354] Optionally, before the first core network node performs a first operation based on the first information,

[0355] The first core network node receives handover information or redirection information from the first access network node; or

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

[0357] The redirection operation of the first core network node is called by the first access network node; or

[0358] The handover operation of the first core network node is invoked by a third core network node; or

[0359] The redirection operation of the first core network node is called by a third core network node; or

[0360] The first core network node receives switching information or redirection information from the third core network node.

[0361] Optionally, the first information is related to an access network of the first network system, and the obtaining module 501 is specifically configured to perform at least one of the following:

[0362] receiving the first information from the terminal;

[0363] The first information is received from a first access network node.

[0364] Optionally, the first information is related to the core network of the first network system, and the obtaining module 501 is specifically configured to perform at least one of the following:

[0365] receiving the first information from a second core network node;

[0366] receiving the first information from the terminal;

[0367] The first information is received from a first access network node.

[0368] Optionally, the first information is related to a core network of the first network system;

[0369] The obtaining module 501 is specifically configured to: receive the first information from the second core network node;

[0370] Before receiving the first information from the second core network node,

[0371] The first core network node receives handover information or redirection information from the first access network node; or

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

[0373] The redirection operation of the first core network node is called by the first access network node; or

[0374] The handover operation of the first core network node is invoked by a third core network node; or

[0375] The redirection operation of the first core network node is called by a third core network node; or

[0376] The first core network node receives switching information or redirection information from the third core network node.

[0377] Optionally, the obtaining module 501 is specifically configured to perform at least one of the following:

[0378] Sending a subscription request to the second core network node, and receiving the first information sent or notified by the second core network node;

[0379] calling a subscription operation of the second core network node, and obtaining the first information returned or notified by the second core network node;

[0380] Sending a query request to the second core network node, and receiving the first information sent by the second core network node;

[0381] Call the query operation of the second core network node and obtain the first information returned.

[0382] Optionally, the obtaining module 501 is specifically configured to:

[0383] The first information sent by the first access network node is received through the third core network node.

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

[0385] The first access network node and the first core network node belong to the same network system; or,

[0386] The network system where the third core network node is located is different from the first network system; or,

[0387] The third core network node and the first core network node belong to different network systems; or,

[0388] The network system where the first core network node is located is different from the first network system.

[0389] Optionally, the first information includes at least one of the following:

[0390] Access network related information of the first network system;

[0391] Core network related information of the first network system.

[0392] Optionally, the core network related information includes: identification information of the fourth core network node; or

[0393] The access network related information includes at least one of the following:

[0394] Cell information;

[0395] Cell group information;

[0396] Base station information;

[0397] Regional information.

[0398] Optionally, the fourth core network node is a core network node of the first network system; or

[0399] The cell corresponding to the cell information belongs to the first network system; or

[0400] The cell group corresponding to the cell group information belongs to the first network system; or

[0401] The base station corresponding to the base station information belongs to the first network system.

[0402] The operation execution device in the embodiments of the present application can 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 chip. The electronic device can be a terminal, or it can be other devices other than a terminal. For example, the terminal can include but is not limited to the types of terminal 11 listed above, and other devices can be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0403] The operation execution device provided in the embodiment of the present application can implement each process implemented in the method embodiment of Figure 2 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0404] Please refer to Figure 12, which is a structural diagram of an information sending device provided in an embodiment of the present application. The second core network node includes the information sending device. As shown in Figure 12, the information sending device 600 includes:

[0405] The first sending module 601 is 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 resides or is connected.

[0406] Optionally, the first sending module 601 is specifically configured to perform at least one of the following:

[0407] receiving a subscription request sent by the first core network node, and sending or notifying the first information to the first core network node based on the subscription request;

[0408] Returning or notifying the first information to the first core network node based on the subscription operation invoked by the first core network node;

[0409] receiving a query request sent by the first core network node, and sending the first information to the first core network node based on the query request;

[0410] Based on the query operation called by the first core network node, the first information is returned to the first core network node.

[0411] The information sending device in the embodiments of the present application can 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 chip. The electronic device can be a terminal, or it can be other devices other than a terminal. For example, the terminal can include but is not limited to the types of terminal 11 listed above, and other devices can be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0412] The information sending device provided in the embodiment of the present application can implement the various processes implemented in the method embodiment of Figure 3 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0413] Please refer to FIG. 13 , which is a structural diagram of an information sending device provided in an embodiment of the present application. The first access network node includes the information sending device. As shown in FIG. 13 , the information sending device 700 includes:

[0414] A receiving module 701 is configured to receive first information sent by a terminal, where the first information is information related to a first network system in which the terminal resides or is connected;

[0415] The second sending module 702 is configured to send the first information to the first core network node.

[0416] Optionally, the second sending module 702 is specifically configured to perform at least one of the following:

[0417] Sending the first information to the first core network node through a handover process;

[0418] Sending handover information or redirection information to the first core network node, where the handover information or redirection information carries the first information;

[0419] Calling a switching operation or a redirection operation of the first core network node, wherein the first information is used as a parameter for calling the switching operation or the redirection operation.

[0420] The information sending device in the embodiments of the present application can 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 chip. The electronic device can be a terminal, or it can be other devices other than a terminal. For example, the terminal can include but is not limited to the types of terminal 11 listed above, and other devices can be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0421] The information sending device provided in the embodiment of the present application can implement the various processes implemented in the method embodiment of Figure 4 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0422] Please refer to FIG. 14 , which is a structural diagram of an information sending device provided in an embodiment of the present application. A terminal includes the information sending device. As shown in FIG. 14 , the information sending device 800 includes:

[0423] The third sending module 801 is 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 in which the terminal resides or is connected.

[0424] The information sending device in the embodiments of the present application can 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 chip. The electronic device can be a terminal, or it can be other devices other than a terminal. For example, the terminal can include but is not limited to the types of terminal 11 listed above, and other devices can be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0425] The information sending device provided in the embodiment of the present application can implement the various processes implemented in the method embodiment of Figure 5 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0426] Optionally, as shown in Figure 15, an embodiment of the present application further provides a communication device 900, including a processor 901 and a memory 902, wherein the memory 902 stores a program or instruction that can be run on the processor 901. For example, when the communication device 900 is a terminal, the program or instruction is executed by the processor 901 to implement the various steps of the above-mentioned operation execution method embodiment applied to the terminal, and can achieve the same technical effect. To avoid repetition, it is not repeated here. When the communication device 900 is a first core network node, the program or instruction is executed by the processor 901 to implement the various steps of the above-mentioned information sending method embodiment applied to the first core network node, and can achieve the same technical effect. To avoid repetition, it is not repeated here. When the communication device 900 is a second core network node, the program or instruction is executed by the processor 901 to implement the various steps of the above-mentioned information sending method embodiment applied to the second core network node, and can achieve the same technical effect. To avoid repetition, it is not repeated here. When the communication device 900 is a first access network node, the program or instruction is executed by the processor 901 to implement the various steps of the above-mentioned information sending method embodiment applied to the first access network node, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0427] The present application also provides a terminal including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps in the method embodiment shown in FIG3 . This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment are applicable to this terminal embodiment and can achieve the same technical effects.

[0428] Specifically, FIG16 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of the present application.

[0429] The terminal 1000 includes but is not limited to: 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 at least some of the components of the processor 1010.

[0430] Those skilled in the art will appreciate that the terminal 1000 may also include a power supply (such as a battery) to power various components. The power supply may be logically connected to the processor 1010 via a power management system, thereby enabling the power management system to manage charging, discharging, and power consumption. The terminal structure shown in FIG16 does not limit the terminal. The terminal may include more or fewer components than shown, or may combine certain components, or have different component arrangements, which will not be described in detail here.

[0431] It should be understood that in an embodiment of the present application, the input unit 1004 may include a graphics processing unit (GPU) 10041 and a microphone 10042, and 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 a touch panel 10071 and at least one of 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. 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 an operating stick, which will not be repeated here.

[0432] In the embodiment of the present application, after receiving downlink data from a network-side device, the RF unit 1001 may transmit the data to the processor 1010 for processing. Furthermore, the RF unit 1001 may send uplink data to the network-side device. Typically, the RF unit 1001 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0433] 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, wherein the first storage area may store an operating system, applications 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 volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM), and a direct memory bus random access memory (DRRAM). The memory 1009 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0434] Processor 1010 may include one or more processing units. Optionally, processor 1010 integrates an application processor and a modem processor. The application processor primarily handles operations related to the operating system, user interface, and application programs, while the modem processor primarily processes wireless communication signals, such as a baseband processor. It is understood that the modem processor may not be integrated into processor 1010.

[0435] The radio frequency unit 1001 is used for:

[0436] First information is sent 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 resides or is connected.

[0437] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the method embodiment Figure 3, and achieve the same or corresponding technical effects. To avoid repetition, it will not be repeated here.

[0438] Specifically, the terminal of the embodiment of the present application also includes: instructions or programs stored in the memory 1009 and can be run on the processor 1010. The processor 1010 calls the instructions or programs in the memory 1009 to execute the method of execution of each module shown in Figure 14 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0439] The present application also provides a network-side device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps of the method embodiment shown in Figure 2, Figure 3, or Figure 4. This network-side device embodiment corresponds to the above-mentioned information sending method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to this network-side device embodiment and can achieve the same technical effects.

[0440] Specifically, embodiments of the present application also provide a network-side device. As shown in Figure 17, 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. Antenna 1101 is connected to radio frequency device 1102. In the uplink direction, radio frequency device 1102 receives information via antenna 1101 and sends the received information to baseband device 1103 for processing. In the downlink direction, baseband device 1103 processes the information to be transmitted and sends it to radio frequency device 1102. Radio frequency device 1102 processes the received information and then sends it through antenna 1101.

[0441] The method executed by the network-side device in the above embodiment may be implemented in the baseband device 1103 , which includes a baseband processor.

[0442] The baseband device 1103 may include, for example, at least one baseband board, on which multiple chips are arranged, as shown in Figure 17, one of which 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 embodiment.

[0443] The network side device may further include a network interface 1106 , which is, for example, a Common Public Radio Interface (CPRI).

[0444] Specifically, the network side device 1100 of the embodiment of the present application also includes: instructions or programs stored in the memory 1105 and can be run on the processor 1104. The processor 1104 calls the instructions or programs in the memory 1105 to execute the methods executed by the modules shown in Figure 11 or Figure 12 or Figure 13, and achieves the same technical effect. To avoid repetition, it will not be repeated here.

[0445] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned operation execution method or information sending method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0446] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0447] An embodiment of the present application further provides a chip, which includes 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 the various processes of the above-mentioned operation execution method or information sending method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0448] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0449] An embodiment of the present application further provides a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the various processes of the above-mentioned operation execution method or information sending method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0450] An embodiment of the present application also provides an operation execution system, including: a terminal, a first core network node, a second core network node and a first access network node, wherein 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, and the terminal can be used to execute the steps of the above-mentioned information sending method applied to the terminal.

[0451] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be noted 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 opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0452] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general hardware platform, or of course, by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes a number of instructions for causing a terminal or network-side device to execute the methods described in each embodiment of the present application.

[0453] It should be noted that the various embodiments and optional implementation methods of the present application are not limited to an exclusive parallel relationship. The various embodiments and optional implementation methods of the present application can be partially or completely combined with each other, or partially or completely replaced with each other. For example, different embodiments can be combined to form another embodiment, and different optional implementation methods can also be combined to form another implementation method.

[0454] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of this application and the scope of protection of the claims. These implementation methods are all within the protection of this application.

Claims

1. An operation execution method, comprising: The first core network node obtains first information, where the first information is information related to a first network system where the terminal resides or is connected; 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 the target core network node; Switch to the target core network node; Redirect to the target core network node; Switching to the first network system; redirecting to the first network system; Among them, the network system where the target core network node is located is the first network system.

2. The method according to claim 1, wherein: Before the first core network node performs a first operation based on the first information, the method further includes: The first core network node receives switching information or redirection information from the first access network node; or The switching operation of the first core network node is invoked by the first access network node; or The redirection operation of the first core network node is invoked by the first access network node; or The switching 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 called by a third core network node; or The first core network node receives switching information or redirection information from a third core network node.

3. The method according to claim 1 or 2, wherein: The first information is related to the access network of the first network system, and the first core network node acquires the first information, including 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, wherein: The first information is related to the core network of the first network system, and the first core network node acquires the first information, including at least one of the following: The first core network node receives the first information from the 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, wherein: The first information is related to the core network of the first network system; The first core network node acquires the first information, including: the first core network node receives the first information from the second core network node; Before the first core network node receives the first information from the second core network node, the method further includes: include: The first core network node receives switching information or redirection information from the first access network node; or The switching operation of the first core network node is invoked by the first access network node; or The redirection operation of the first core network node is invoked by the first access network node; or The switching 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 called by a third core network node; or The first core network node receives switching information or redirection information from a third core network node.

6. The method according to claim 4 or 5, wherein: 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 calls a 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 a query operation of the second core network node and obtains the returned first information.

7. The method according to claim 3, wherein: The first core network node receiving first information from the first access network node includes: The first core network node receives the first information sent by the first access network node through a third core network node.

8. The method according to any one of claims 1 to 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. The method according to any one of claims 1 to 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. The method according to 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: Community information; Cell group information; Base station information; Regional information.

11. The method according to 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. A method for sending information, comprising: The second core network node sends first information to the first core network node, where the first information is information related to a first network system where the terminal resides or is connected.

13. The method according to claim 12, wherein: The second core network node sends 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 called 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 called by the first core network node.

14. A method for sending information, comprising: The first access network node receives first information sent by the terminal, where the first information is information related to a first network system where the terminal resides 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, wherein: The first access network node sends the first information to the first core network node, including at least one of the following: The first access network node sends the first information to the first core network node through a switching process; The first access network node sends switching information or redirection information to the first core network node, where the switching information or redirection information carries the first information; The first access network node invokes a switching operation or a redirection operation of the first core network node, wherein the first information is used as a parameter for invoking the switching operation or the redirection operation.

16. A method for sending information, comprising: 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 resides or is connected.

17. An operation execution method, comprising: The terminal sends first information to the first access network node, where the first information is information related to a first network system where the terminal resides 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 performs a first operation based on the first information; The first operation includes at least one of the following: Select the target core network node; Switch to the target core network node; Redirect to the target core network node; Switching to the first network system; redirecting to the first network system; Among them, the network system where the target core network node is located is the first network system.

18. An operation execution device, a first core network node includes the operation execution device, the device comprising: An acquisition module, configured to acquire first information, wherein the first information is information related to a first network system in which the terminal resides 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 the target core network node; Switch to the target core network node; Redirect to the target core network node; Switching to the first network system; redirecting to the first network system; Among them, the network system where the target core network node is located is the first network system.

19. An information sending device, the second core network node includes the information sending device, the device comprising: The first sending module is used to send first information to the first core network node, where the first information is information related to a first network system where the terminal resides or is connected.

20. An information sending device, wherein a first access network node comprises the information sending device, the device comprising: A receiving module, configured to receive first information sent by a terminal, wherein the first information is information related to a first network system in which the terminal resides or is connected; The second sending module is used to send the first information to the first core network node.

21. An information sending device, a terminal comprising the information sending device, the device comprising: The third sending module is used to send 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 where the terminal resides or is connected.

22. A network side device, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, it implements the steps of the operation execution method as described in any one of claims 1 to 11; or, implements the steps of the information sending method as described in claim 12 or 13; or, implements the steps of the information sending method as described in claim 14 or 15.

23. A terminal comprising a processor and a memory, wherein the memory stores a program or instruction that can be 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, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instructions to implement the steps of the operation execution method as described in any one of claims 1 to 11; or, to implement the steps of the information sending method as described in claim 12 or 13; or, to implement the steps of the information sending method as described in claim 14 or 15; or, to implement the steps of the information sending method as described in claim 16.

25. A readable storage medium storing a program or instruction, wherein the program or instruction, when executed by a processor, implements the steps of the operation execution method as described in any one of claims 1 to 11; or, implements the steps of the information sending method as described in claim 12 or 13; or, implements the steps of the information sending method as described in claim 14 or 15; or, implements the steps of the information sending method as described in claim 16.

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