Information transmission method and device, terminal and equipment

Abstract

Disclosed are an information transmission method, apparatus, terminal and device, belonging to the technical field of communications, the information transmission method of the embodiment of the present application comprising: a terminal sending first indication information to a first core network node or a second core network node, the first indication information being used for indicating that the terminal is in a target state in a second network, the target state comprises at least one of the following states: a sending-only state, a non-receiving state and a deactivation state; wherein the first core network node belongs to a first network, and the second core network node belongs to a second network.

Description

Technical Field

[0001] The present application belongs to the field of communication technology, and specifically relates to an information transmission method, device, terminal and equipment. Background Art

[0002] In order to solve the problem of poor signal quality and slow switching of user equipment (UE) at the edge of the 5G network, the industry has proposed a dual registration solution, that is, the UE is registered in both the 5G network and the 4G network, and uses both the 5G network and the 4G network for data transmission.

[0003] The UE is registered on both the 5G network and the 4G network at the same time, and needs to monitor the system messages, paging messages, etc. of the 5G and 4G networks at the same time, which will increase the power consumption of the UE, reduce the standby time, and cause a poor user experience. Summary of the invention

[0004] The embodiments of the present application provide an information transmission method, apparatus, terminal and device to solve the problem that when a terminal is registered to more than one network, it needs to monitor system messages and paging messages of all registered networks at the same time, resulting in high power consumption of the terminal.

[0005] In a first aspect, a method for transmitting information is provided, the method comprising:

[0006] The terminal sends first indication information to the first core network node or the second core network node, where the first indication information is used to indicate that the terminal is in a target state under the second network, where the target state includes at least one of the following: a sending-only state, a non-receiving state, and a deactivated state;

[0007] The first core network node belongs to a first network, and the second core network node belongs to a second network.

[0008] In a second aspect, an information transmission device is provided, which is deployed in a terminal and includes:

[0009] A first sending module, configured to send first indication information to the first core network node or the second core network node, wherein the first indication information is used to indicate that the terminal is in a target state under the second network, and the target state includes at least one of the following: a sending-only state, a non-receiving state, and a deactivated state;

[0010] The first core network node belongs to a first network, and the second core network node belongs to a second network.

[0011] In a third aspect, an information transmission method is provided, the method comprising:

[0012] The first core network node receives first indication information sent by the terminal, where the first indication information is used to indicate that the terminal is in a target state under the second network, where the target state includes at least one of the following: a sending-only state, a non-receiving state, and a deactivated state;

[0013] The first core network node belongs to the first network.

[0014] In a fourth aspect, an information transmission device is provided, which is deployed in a first core network node, including:

[0015] A first receiving module, configured to receive first indication information sent by a terminal, wherein the first indication information is used to indicate that the terminal is in a target state under a second network, wherein the target state includes at least one of the following: a sending-only state, a non-receiving state, and a deactivated state;

[0016] The first core network node belongs to the first network.

[0017] In a fifth aspect, a method for information transmission is provided, the method comprising:

[0018] The second core network node receives first indication information sent by the terminal, where the first indication information is used to indicate that the terminal is in a target state under the second network, where the target state includes at least one of the following: a sending-only state, a non-receiving state, and a deactivated state;

[0019] The second core network node belongs to the second network.

[0020] In a sixth aspect, an information transmission device is provided, which is deployed in a second core network node, including:

[0021] A second receiving module, configured to receive first indication information sent by a terminal, wherein the first indication information is used to indicate that the terminal is in a target state under a second network, and the target state includes at least one of the following: a sending-only state, a non-receiving state, and a deactivated state;

[0022] The second core network node belongs to the second network.

[0023] In a seventh aspect, a method for information transmission is provided, the method comprising:

[0024] The first network element receives fourth indication information sent by the first core network node, where the fourth indication information is used to instruct the first network element to send an address of a network element of the first network to the second network element when receiving a target request from the second network element; or

[0025] The first network element receives seventh indication information sent by the second core network node, where the seventh indication information is used to instruct the first network element to send an address of a network element of the first network to the second network element when receiving a target request from the second network element;

[0026] The target request is used to request the first network element to feedback the network element that provides services to the terminal; the first core network node belongs to the first network, and the second core network node belongs to the second network.

[0027] In an eighth aspect, an information transmission device is provided, which is deployed in a first network element, including:

[0028] a third receiving module, configured to receive fourth indication information sent by the first core network node, wherein the fourth indication information is used to instruct the first network element to send an address of a network element of the first network to the second network element when receiving a target request from the second network element; or

[0029] receiving seventh indication information sent by the second core network node, wherein the seventh indication information is used to instruct the first network element to send an address of a network element of the first network to the second network element when receiving a target request from the second network element;

[0030] The target request is used to request the first network element to feedback the network element that provides services to the terminal; the first core network node belongs to the first network, and the second core network node belongs to the second network.

[0031] In a ninth aspect, a terminal is provided, 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 method described in the first aspect are implemented.

[0032] In a tenth aspect, a terminal is provided, comprising a processor and a communication interface, wherein the communication interface is used to send first indication information to a first core network node or a second core network node, wherein the first indication information is used to indicate that the terminal is in a target state under the second network, and the target state includes at least one of the following: a sending-only state, a non-receiving state, and a deactivated state;

[0033] The first core network node belongs to a first network, and the second core network node belongs to a second network.

[0034] In the eleventh aspect, a core network node is provided, which is a first core network node, including a processor and a memory, the memory storing programs or instructions that can be run on the processor, and the programs or instructions, when executed by the processor, implement the steps of the method described in the third aspect.

[0035] In a twelfth aspect, a core network node is provided, the core network node being a first core network node, comprising a processor and a communication interface, wherein the communication interface is used to receive first indication information sent by a terminal, the first indication information being used to indicate that the terminal is in a target state under a second network, the target state comprising at least one of the following: a sending-only state, a non-receiving state, and a deactivated state;

[0036] The first core network node belongs to the first network.

[0037] In the thirteenth aspect, a core network node is provided, which is a second core network node, including a processor and a memory, the memory storing programs or instructions that can be run on the processor, and the programs or instructions, when executed by the processor, implement the steps of the method described in the fifth aspect.

[0038] In a fourteenth aspect, a core network node is provided, the core network node being a second core network node, comprising a processor and a communication interface, wherein the communication interface is used to receive first indication information sent by a terminal, the first indication information being used to indicate that the terminal is in a target state under a second network, the target state comprising at least one of the following: a sending-only state, a non-receiving state, and a deactivated state;

[0039] The second core network node belongs to the second network.

[0040] In the fifteenth aspect, an information transmission network element is provided, which is a first network element and 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 fifth aspect are implemented.

[0041] In the sixteenth aspect, an information transmission network element is provided, which is a first network element, comprising a processor and a communication interface, wherein the communication interface is used to receive fourth indication information sent by a first core network node, and the fourth indication information is used to instruct the first network element to send the address of the network element of the first network to the second network element when receiving a target request from the second network element; or

[0042] receiving seventh indication information sent by the second core network node, wherein the seventh indication information is used to instruct the first network element to send an address of a network element of the first network to the second network element when receiving a target request from the second network element;

[0043] The target request is used to request the first network element to feedback the network element that provides services to the terminal; the first core network node belongs to the first network, and the second core network node belongs to the second network.

[0044] In the seventeenth aspect, a communication system is provided, including: a terminal, a first core network node, a second core network node and a first network element, the terminal can be used to execute the steps of the method described in the first aspect, the first core network node can be used to execute the steps of the method described in the third aspect, the second core network node can be used to execute the steps of the method described in the fifth aspect, and the first network element can be used to execute the steps of the method described in the seventh aspect.

[0045] In the eighteenth 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, the third aspect, the fifth aspect or the seventh aspect are implemented.

[0046] In the nineteenth 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 steps of the method described in the first aspect, the third aspect, the fifth aspect or the seventh aspect.

[0047] In the twentieth aspect, a computer program / program product is provided, wherein the computer program / program product is stored in a storage medium, and the computer program / program product is executed by at least one processor to implement the steps of the method described in the first aspect, the third aspect, the fifth aspect or the seventh aspect.

[0048] In an embodiment of the present application, by sending first indication information indicating that the terminal is in a sending-only state, a non-receiving state or a deactivated state in the second network to a first core network node in the first network or a second core network node in the second network, the relevant network elements in the second network are prevented from sending system messages and paging messages. In this way, the terminal does not need to monitor system messages and paging messages in the second network, or even if the relevant network elements in the second network send system messages and paging messages, the terminal does not need to monitor system messages and paging messages in the second network. This enables the terminal to not monitor system messages and paging messages of some networks when registered to more than one network, thereby saving terminal power consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 is a block diagram of a wireless communication system to which the embodiments of the present application can be applied;

[0050] Figure 2 This is one of the flowcharts of the information transmission method according to the embodiment of the present application;

[0051] Figure 3 It is a flow chart of application scenario 1 of this application;

[0052] Figure 4It is a flow chart of the second application scenario of this application;

[0053] Figure 5 This is the second flow chart of the information transmission method according to the embodiment of the present application;

[0054] Figure 6 This is the third flow chart of the information transmission method according to the embodiment of the present application;

[0055] Figure 7 This is a fourth flowchart of the information transmission method of an embodiment of the present application;

[0056] Figure 8 It is one of the module schematic diagrams of the information transmission device according to the embodiment of the present application;

[0057] Fig. 9 is a schematic diagram of the structure of a terminal in an embodiment of the present application;

[0058] Fig.10 This is the second module schematic diagram of the information transmission device according to the embodiment of the present application;

[0059] Fig.11 It is a structural diagram of a core network node in an embodiment of the present application;

[0060] Fig.12 This is the third module schematic diagram of the information transmission device according to the embodiment of the present application;

[0061] Fig.13 This is the fourth module schematic diagram of the information transmission device according to the embodiment of the present application;

[0062] Fig.14 It is a schematic diagram of the structure of the communication device of an embodiment of the present application. DETAILED DESCRIPTION

[0063] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0064] The terms "first", "second", etc. of the present 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 one type, and the number of objects is not limited, for example, the first object can be one or more. In addition, "or" in the present application represents at least one of the connected objects. For example, "A or B" covers three schemes, namely, Scheme 1: including A but not including B; Scheme 2: including B but not including A; Scheme 3: including both A and B. The character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0065] The term "indication" in this application can be 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, operations to be performed, or request results in the sent indication; an indirect indication can be understood as the receiver determining the corresponding information according to the indication sent by the sender, or making a judgment and determining the operation to be performed or the request result according to the judgment result.

[0066] 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 described technology can be used for the above-mentioned systems and radio technologies as well as other systems and radio technologies. The following description describes a new radio (NR) system for example purposes, and NR terms are used in most of the following descriptions, but these technologies can also be applied to systems other than NR systems, such as 6th Generation (6G) communication systems.

[0067] Figure 1A block diagram of a wireless communication system applicable to an embodiment of the present application is shown. The wireless communication system includes a terminal 11 and a network side device 12. Among them, the terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a handheld computer, a netbook, an ultra-mobile personal computer (Ultra-mobile Personal Computer, UMPC), a mobile Internet device (Mobile Internet Device, MID), an augmented reality (Augmented Reality, AR), a virtual reality (Virtual Reality, VR) device, a robot, a wearable device (Wearable Device), an aircraft (flight vehicle), a vehicle-mounted device (Vehicle User Equipment, VUE), a ship-mounted device, a pedestrian terminal (Pedestrian User Equipment, PUE), a smart home (home appliances with wireless communication functions, such as refrigerators, televisions, washing machines or furniture, etc.), a game console, a personal computer (Personal Computer, PC), a teller machine or a self-service machine and 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. In addition to the above-mentioned terminal devices, it can also be a chip in the terminal, such as a modem chip, a system-on-chip (SoC). 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 device or a core network device, wherein the access network device may also be referred to as a radio access network (RAN) device, a radio access network function or a radio access network unit. The access network device may include a base station, a wireless local area network (WLAN) access point (AP) or a wireless fidelity (WiFi) node, etc.Among them, the base station may be referred to as a Node B (NB), an evolved Node B (eNB), a next generation Node B (gNB), a New Radio Node B (NR Node B), an access point, a Relay Base Station (RBS), a Serving Base Station (SBS), a Base Transceiver Station (BTS), a radio base station, a radio transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a Home Node B (HNB), a Home Evolved Node B (home evolved Node B), a Transmission Reception Point (TRP) or other appropriate terms in the field. As long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiments of 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.

[0068] The core network equipment may include but is not limited to at least one of the following: core network node, core network function, mobility management entity (Mobility Management Entity, MME), access mobility management function (Access and Mobility Management Function, AMF), session management function (Session Management Function, SMF), user plane function (User Plane Function, UPF), policy control function (Policy Control Function, PCF), policy and charging rules function unit (Policy and Charging Rules Function, PCRF), edge application service discovery function (Edge Application Server Discovery Function, EASDF), unified data management (Unified Data Management, UDM), unified data storage (Unified Data Repository, UDR), home user server (Home Subscriber Server, HSS), centralized network configuration (CNC), network storage function (Network Repository Function, NRF), network exposure function (Network Exposure Function, NEF), local NEF (Local NEF, or L-NEF), binding support function (Binding Support Function, BSF), application function (Application Function, AF), etc. It should be noted that in the embodiments of the present application, only the core network device in the NR system is introduced as an example, and the specific type of the core network device is not limited.

[0069] The following is a description of the technologies related to the embodiments of the present application.

[0070] After the UE registers on a network (such as a 4G network), it needs to:

[0071] Monitor the system information block (SIB) message sent by the base station under the network, so as to synchronize with the base station;

[0072] Determine the current cell and tracking area (TA) by monitoring the SIB sent by the base station under the network, and send a Tracking Area Update (TAU) message when the tracking area changes;

[0073] Monitor the paging message sent by the base station under the network, so as to receive the data or signaling sent by the network to the UE.

[0074] The following, in conjunction with the accompanying drawings, describes in detail the information transmission method, apparatus, terminal and device provided in the embodiments of the present application through some embodiments and their application scenarios.

[0075] like Figure 2 As shown, the embodiment of the present application provides an information transmission method, including:

[0076] Step 201: The terminal sends first indication information to the first core network node or the second core network node, where the first indication information is used to indicate that the terminal is in a target state in the second network;

[0077] Wherein, the target state includes at least one of the following: a sending-only state, a non-receiving state, and a deactivated state;

[0078] The first core network node belongs to a first network, and the second core network node belongs to a second network.

[0079] It should be noted that the application scenario corresponding to the embodiment of the present application is that the terminal has registered and accessed the first network and the second network.

[0080] Optionally, the first network and the second network may be networks corresponding to different network standards, and the network standards may include 3G, 4G, 5G, 6G, etc. For example, the first network is a 4G network and the second network is a 5G network; or, the first network is a 5G network and the second network is a 4G network. Optionally, the first network and the second network may also be networks corresponding to the same network standard, for example, the first network is a 5G network of operator A, and the second network is a 5G network of operator B.

[0081] It should be noted that, by sending first indication information indicating that the terminal is in a sending-only state, a non-receiving state or a deactivated state in the second network to the first core network node in the first network or the second core network node in the second network, the relevant network elements in the second network are prevented from sending system messages and paging messages. In this way, the terminal does not need to monitor system messages and paging messages in the second network, or even if the relevant network elements in the second network send system messages and paging messages, the terminal does not need to monitor system messages and paging messages in the second network. This enables the terminal to not monitor system messages and paging messages of some networks when registered to more than one network, thereby saving terminal power consumption.

[0082] Optionally, in an implementation manner, the first indication information includes at least one of the following:

[0083] A11, an indication that the terminal only sends in the second network;

[0084] This situation can be understood as the terminal only sending information in the second network and not receiving information or messages sent by the network side.

[0085] A12, dual steer indication;

[0086] This situation can be understood as the terminal being in a dual transmission state or a dual registration state, and can perform energy-saving operations in the second network.

[0087] A13, multiple transmission indication;

[0088] This situation can be understood as the terminal being in a multi-transmission state or a multi-registration state, and can perform energy-saving operations in the second network.

[0089] A14, an indication that the terminal is only in a registered state in the second network;

[0090] This situation can be understood as the terminal only registering in the second network and not receiving information or messages sent by the network side.

[0091] A15, information about the offline duration of the terminal in the second network;

[0092] This situation can be understood as that, within the time indicated by the offline duration information, the terminal does not receive information or messages sent by the network side in the second network.

[0093] A16, an indication that the terminal is in a deactivated (deactive or inactive) state in the second network;

[0094] This situation can be understood as the terminal being deactivated in the second network, that is, the terminal does not receive information or messages sent by the network side in the second network.

[0095] It should be noted that by indicating at least one item of A11-A16 to the first core network node or the second core network node, the first core network node or the second core network node is clearly informed of the current status of the terminal, so that the terminal does not need to monitor system messages and paging messages in the second network. When the terminal is registered to more than one network, it does not need to monitor the system messages and paging messages of some networks, thereby saving terminal power consumption.

[0096] The different implementation situations of the embodiments of the present application are described below.

[0097] Case 1: The terminal sends the first indication information to the first core network node

[0098] Optionally, in one implementation manner, the specific implementation of sending the first indication information to the first core network node includes:

[0099] The terminal sends a first message to the first core network node, where the first message carries the first indication information.

[0100] Optionally, the first message includes at least one of the following:

[0101] B11, Service Request message;

[0102] B12, Registration message;

[0103] B13, uplink non-access layer transport (UL NAS transport) message;

[0104] B14. Configuration Update Command message.

[0105] It should be noted that by sending the first indication information with the aid of at least one of B11-B14, no additional message needs to be introduced, thereby reducing resource overhead.

[0106] Optionally, in one implementation, the first message also carries a target identifier, and the target identifier is used by the first core network node to determine a second core network node in the second network that provides services for the terminal.

[0107] It should be noted that, by sending the target identifier, it is possible to ensure that the first core network node accurately determines the second core network node under the second network, and ensure accurate transmission of the message sent by the first core network node.

[0108] Optionally, in one implementation, the target identifier includes at least one of the following:

[0109] B21, Globally Unique Temporary UE Identity (GUTI);

[0110] B22, the world's only second core network node identifier.

[0111] For example, when the second network is a 4G network, the second core network node may be an MME, and the globally unique second core network node identifier is a globally unique MME identifier (Globally Unique MME Identity, GUMMEI).

[0112] Optionally, when the second network is a 4G network, GUTI is a temporary identifier allocated by the MME to the UE, and the GUTI includes the GUMMEI.

[0113] Further, after the first core network node receives the first indication information, optionally, in one implementation manner, the method further includes:

[0114] The first core network node sends third indication information to the second core network node, where the third indication information is used to indicate that the terminal is in the target state under the second network.

[0115] It should be noted that since the first core network node is not the core network node under the second network, in order to enable the core network node under the second network to know the current status of the terminal, the first core network node should promptly send the third indication information to the second core network node under the second network, so that the second core network node can promptly know the status of the terminal, avoid sending messages, and reduce sending resource overhead.

[0116] Optionally, the first core network node may determine the second core network node that receives the third indication information through a target identifier carried in the first message sent by the terminal.

[0117] It should be noted that the information format of the third indication information and the first indication information may be the same or different.

[0118] Optionally, in order to make the second core network node clear about which terminal the indication information is for, the first core network node should also send the identification information of the terminal to the second core network node, for example, the identification information of the terminal may be an International Mobile Subscriber Identity (IMSI). Optionally, the third indication information and the identification information of the terminal may be sent to the second core network node through the same message.

[0119] It should be noted here that when the second core network node receives the third indication information sent by the first core network node, the second core network node records that the terminal is in the target state in the second network. When other network elements subsequently request to paging the terminal, the second core network node does not send a paging message to the terminal.

[0120] Optionally, in one implementation, the method further includes:

[0121] The first core network node sends fourth indication information to the first network element, and the fourth indication information is used to instruct the first network element to send the address of the network element of the first network to the second network element when receiving the target request of the second network element, and the target request is used to request the first network element to feedback the address of the network element that provides service for the terminal.

[0122] It should be noted that by sending the fourth indication information to the first network element, it is ensured that the first network element will not provide the address of the network element of the second network to other network elements, thereby further avoiding the situation where the network element under the second network sends paging messages and system messages to the terminal, thereby reducing the sending resource overhead.

[0123] Optionally, the first network element may be a network element that implements data management and home subscriber services. For example, the first network element may be a network element that combines a unified data management function (UDM) and a home subscriber server (HSS).

[0124] Optionally, when the first network element receives the fourth indication information, the first network element may record that the network element under the first network provides services for the terminal; or, the first network element may record that the second network is in a deactivated state; so that when the first network element receives a request from the second network element to the first network element to feedback the address of the network element that provides services for the terminal, the first network element only feeds back the address of the network element of the first network to the second network element.

[0125] For example, when the first network is a 5G network and the second network is a 4G network, if the second network element (for example, the second network element may be a Short Messaging Service Gateway Mobile Switching Center (SMS-GMSC)) requests the first network element for the address of the network element that provides services for the terminal, the first network element returns the address of the 5G Short Message Service Function (SMSF) to the second network element.

[0126] Optionally, the first core network node sends a response message to the terminal, and the terminal receives the response message and records that the second network is in the target state. Further optionally, the terminal performs at least one of the following in the second network:

[0127] B31, only send periodic update messages;

[0128] B32. Do not monitor messages sent by the access network device of the second network;

[0129] For example, the terminal does not monitor paging messages and system messages sent by the access network device under the second network.

[0130] It should be noted that, by executing at least one of the above B31 and B32, the terminal may not monitor the messages under the second network, thereby saving power consumption of the terminal.

[0131] Case 2: The terminal sends the first indication information to the second core network node

[0132] Optionally, in one implementation manner, the specific implementation of sending the first indication information to the second core network node includes:

[0133] The terminal sends a second message to the second core network node, where the second message carries the first indication information;

[0134] The second message includes at least one of the following:

[0135] C11, service request message;

[0136] C12, Tracking Area Update (TAU) message;

[0137] C13. Uplink non-access layer transmission message.

[0138] It should be noted that by sending the first indication information with the help of at least one of C11-C13, no additional message needs to be introduced, thereby reducing resource overhead.

[0139] Further, after the second core network node receives the first indication information, optionally, in one implementation manner, the method further includes:

[0140] The second core network node sends seventh indication information to the first network element, and the seventh indication information is used to instruct the first network element to send the address of the network element of the first network to the second network element when receiving the target request of the second network element, and the target request is used to request the first network element to feedback the address of the network element that provides service to the terminal.

[0141] It should be noted that by sending the seventh indication information to the first network element, it is ensured that the first network element will not provide the address of the network element of the second network to other network elements, thereby further avoiding the situation where the network element under the second network sends paging messages and system messages to the terminal, thereby reducing the sending resource overhead.

[0142] Optionally, the first network element may be a network element for implementing data management and home user services. For example, the first network element may be a network element jointly provided by UDM and HSS.

[0143] Optionally, when the first network element receives the seventh indication information, the first network element may record that the network element under the first network provides services for the terminal; or, the first network element may record that the second network is in a deactivated state; so that when the first network element receives a request from the second network element to the first network element to feedback the address of the network element that provides services for the terminal, the first network element only feeds back the address of the network element of the first network to the second network element.

[0144] Optionally, the first core network node sends a response message to the terminal, and the terminal receives the response message and records that the second network is in the target state. Further optionally, the terminal performs at least one of the following in the second network:

[0145] C31, only send periodic update messages;

[0146] C32: Do not monitor messages sent by the access network device of the second network;

[0147] For example, the terminal does not monitor paging messages and system messages sent by the access network device under the second network.

[0148] It should be noted that the above situation 1 and situation 2 can be considered that the terminal actively shuts down the reception of the second network. When the terminal hopes to continue to receive messages on the second network, optionally, in one implementation, the method further includes:

[0149] The terminal sends second indication information to the first core network node or the second core network node, where the second indication information is used to indicate that the terminal is not in a target state or is in a sending and receiving state under the second network.

[0150] It should be noted that, by sending second indication information to the first core network node in the first network or the second core network node in the second network, indicating that the terminal is not in a sending-only state, a non-receiving state, a deactivated state, or a sending and receiving state in the second network, the terminal can turn off monitoring of system messages and paging messages in the second network and, when there is a reception demand, turn on the reception of system messages and paging messages in the second network, thereby realizing normal communication of the terminal in the second network.

[0151] Optionally, when the first indication information is sent to the first core network node, the terminal sends the second indication information to the first core network node; when the first indication information is sent to the second core network node, the terminal sends the second indication information to the second core network node.

[0152] Optionally, when the first core network node receives the second indication information sent by the terminal, the first core network node sends fifth indication information to the second core network node, and the fifth indication information is used to indicate that the terminal is not in the target state or is in the sending and receiving state under the second network.

[0153] It should be noted that since the first core network node is not the core network node under the second network, in order to enable the core network node under the second network to know the current status of the terminal, the first core network node should promptly send the fifth indication information to the second core network node under the second network, so that the second core network node can promptly know the status of the terminal, restart the sending of messages, and ensure normal communication of the terminal.

[0154] It should be noted that the information format of the fifth indication information and the second indication information may be the same or different.

[0155] It should be noted here that when the second core network node receives the fifth indication information sent by the first core network node, the second core network node records that the terminal is not in the target state or in the sending and receiving state in the second network. When other network elements subsequently request to paging the terminal, the second core network node sends a paging message to the terminal.

[0156] Optionally, in an implementation manner, when the first core network node receives the second indication information sent by the terminal, the method further includes:

[0157] The first core network node sends sixth indication information to the first network element, and the sixth indication information is used to instruct the first network element to send the address of the network element of the second network to the second network element when receiving a target request from the second network element, or to send the address of the network element of the second network and the address of the network element of the first network to the second network element.

[0158] It should be noted that, by sending the sixth indication information to the first network element, it is ensured that the first network element can provide the address of the network element of the second network to other network elements, thereby achieving normal communication of the terminal in the second network.

[0159] Optionally, when the first network element receives the sixth indication information, the first network element may record that the network element under the second network provides services for the terminal; or, the first network element may record that the second network is in an activated state; so that when the second network element requests the first network element to feedback the address of the network element that provides services for the terminal, the first network element feedbacks the address of the network element of the second network to the second network element, or feedbacks the address of the network element of the second network and the address of the network element of the first network.

[0160] Optionally, when the second core network node receives the second indication information sent by the terminal, the second core network node sends an eighth indication information to the first network element, and the eighth indication information is used to instruct the first network element to send the address of the network element of the second network to the second network element when receiving the target request of the second network element, or to send the address of the network element of the second network and the address of the network element of the first network to the second network element.

[0161] It should be noted that, by sending the eighth indication information to the first network element, it is ensured that the first network element can provide the address of the network element of the second network to other network elements, thereby achieving normal communication of the terminal in the second network.

[0162] Optionally, when the first network element receives the eighth indication information, the first network element may record that the network element under the second network provides services for the terminal; or, the first network element may record that the second network is in an activated state; so that when the second network element requests the first network element to feedback the address of the network element that provides services for the terminal, the first network element feedbacks the address of the network element of the second network to the second network element, or feedbacks the address of the network element of the second network and the address of the network element of the first network.

[0163] It should be noted that the sending of the second indication information is only one way for the terminal to activate the second network. Optionally, the embodiment of the present application also provides the following implementation method for activating the second network.

[0164] Method 1: The terminal sends any message to the second core network node, that is, the second core network node considers that the terminal is not in the target state or is in the sending and receiving state when receiving any NAS message sent by the terminal.

[0165] Method 2: When the first message sent by the terminal does not carry the first indication information, the second core network node receives such a first message and considers that the terminal is not in the target state or is in the sending and receiving state.

[0166] It should be noted that when the terminal is in a scenario where it is registered with two networks, the above method can be used to activate one network; optionally, when the terminal is in a scenario where it is registered with three or more networks, the networks that do not need to be activated can be deactivated separately based on the above method. For example, the terminal is registered with network A, network B and network C at the same time, and the terminal needs to deactivate network B and network C. Then, the terminal needs to execute the above method separately to deactivate network B and network C; it should be noted that the process of deactivating network B and network C can be executed independently or in parallel.

[0167] Taking the first network as a 5G network and the second network as a 4G network as an example, the specific application of the embodiment of the present application is illustrated as follows.

[0168] Application scenario 1: The terminal sends the first indication information to the AMF in the 5G network

[0169] like Figure 3 As shown, the specific implementation process includes:

[0170] Step 31: The UE sends a first message to the AMF of the 5G network, where the first message carries first indication information.

[0171] Optionally, the first message also carries identification information of the 4G network.

[0172] The first indication information is used to indicate that the UE is in a sending-only state, a non-receiving state, or a deactivated state on the 4G network, and the first indication information includes at least one of the following:

[0173] 4G only sends (Mobile Originated, MO) indication;

[0174] Dual steer instructions;

[0175] 4G attach only indication;

[0176] Information about the duration of UE being offline on the 4G network;

[0177] Indication that the UE is in a deactivated state in 4G.

[0178] It should be noted that the UE being in a sending-only state or a non-receiving state can also be understood as the UE being in a sending-only or non-receiving mode.

[0179] The identification information of the 4G network is used by the AMF to determine the MME that provides services for the UE through the 4G network. The identification information includes at least one item:

[0180] 4G GUTI (Globally Unique Temporary UE Identity)

[0181] 4G GUMMEI (Globally Unique MME Identity)

[0182] Optionally, the first message may be a non-access stratum (NAS) message, and the first message may be at least one of the following messages:

[0183] Service Request message;

[0184] Registration message;

[0185] UL NAS transport message;

[0186] Configuration Update Command message.

[0187] Step 32: AMF sends the fourth indication information and the identification information of the UE to UDM+HSS to notify UDM+HSS that when other network elements subsequently request the network element that provides services to the UE, the address of the 5G network element is returned.

[0188] It should be noted that the format of the fourth indication information may be the same as or different from the format of the first indication information.

[0189] It should be noted that this step is optional.

[0190] Step 33: UDM+HSS records that the current 5G network element provides services for the UE, or the 4G network element is in a deactivated state.

[0191] Step 34: AMF sends the third indication information and the identification information of the UE to the MME.

[0192] The third indication information is used to indicate that the UE is in a sending-only state, a non-receiving state or a deactivated state in the 4G network. The format of the third indication information may be the same as or different from that of the first indication information.

[0193] Optionally, the AMF determines the address of the MME based on the identification information of the 4G network provided by the UE.

[0194] Step 35: The MME records the UE's status in the 4G network as being in a sending-only state, a non-receiving state, or a deactivated state.

[0195] For example, when other network elements subsequently request to page the UE, the MME does not send a paging message to the UE.

[0196] Step 36: AMF sends a response message to UE;

[0197] The UE records that it is in the sending-only state, non-receiving state or deactivated state in the 4G network; the UE does not monitor base station messages in the 4G network and only sends periodic update messages

[0198] Subsequently, when the UE wishes to continue receiving messages in the 4G network, the UE sends a second indication message to the AMF through a NAS message, where the second indication message is used to indicate that the UE is not in a sending-only state, a non-receiving state, or a deactivated state in the 4G network, or the second indication message is used to indicate that the UE is in a sending and receiving state in the 4G network.

[0199] Furthermore, AMF needs to send the sixth indication information to UDM+HSS, and AMF sends the fifth indication information to MME.

[0200] Application scenario 2: The terminal sends the first indication information to the MME in the 4G network

[0201] like Figure 4 As shown, the specific implementation process includes:

[0202] Step 41: The UE sends a first message to the 4G network MME, where the first message carries first indication information.

[0203] The first indication information is used to indicate that the UE is in a sending-only state, a non-receiving state, or a deactivated state on the 4G network, and the first indication information includes at least one of the following:

[0204] 4G only sends instructions;

[0205] Dual steer instructions;

[0206] 4G only registers the indication;

[0207] Information about the duration of UE being offline on the 4G network;

[0208] Indication that the UE is in a deactivated state in 4G.

[0209] Optionally, the first message may be a NAS message, and the first message may be at least one of the following messages:

[0210] Service Request message;

[0211] TAU News;

[0212] UL NAS transport message.

[0213] Step 42: The MME records the state of the UE in the 4G network as being in a sending-only state, a non-receiving state, or a deactivated state.

[0214] For example, when other network elements subsequently request to page the UE, the MME does not send a paging message to the UE.

[0215] Step 43: MME sends the seventh indication information and the identification information of the UE to UDM+HSS to notify UDM+HSS that when other network elements subsequently request the network element that provides services to the UE, the address of the 5G network element is returned.

[0216] The format of the seventh indication information may be the same as or different from the format of the first indication information.

[0217] It should be noted that this step is optional.

[0218] Step 44: UDM+HSS records that the current 5G network element provides services for the UE, or the 4G network element is in a deactivated state.

[0219] Step 45: The MME sends a response message to the UE.

[0220] The UE records that it is in a sending-only state, a non-receiving state, or a deactivated state in the 4G network; the UE does not monitor base station messages in the 4G network and only sends periodic update messages.

[0221] Subsequently, when the UE wishes to continue receiving messages in the 4G network, the UE may perform one of the following operations:

[0222] 1. The UE sends second indication information to the MME through a NAS message, where the second indication information is used to indicate that the UE is not in a sending-only state, a non-receiving state or a deactivated state in the 4G network, or the second indication information is used to indicate that the UE is in a sending and receiving state in the 4G network.

[0223] 2. When the UE sends any message on the 4G network, that is, when the MME receives any 4G NAS message sent by the UE, it considers that the UE is not in the sending-only state, the non-receiving state, the deactivated state, or the sending-receiving state.

[0224] 3. When the NAS message sent by the UE does not carry the first indication information, the MME considers that it is not in the sending-only state, the non-receiving state, the deactivated state, or the sending-receiving state.

[0225] Furthermore, the MME needs to send eighth indication information to the UDM+HSS.

[0226] It should be noted that at least one embodiment of the present application can enable the terminal to register with more than one network without having to monitor the information sent by all two networks, thereby saving power consumption of the terminal.

[0227] like Figure 5 As shown, the embodiment of the present application provides an information transmission method, including:

[0228] Step 501: A first core network node receives first indication information sent by a terminal, where the first indication information is used to indicate that the terminal is in a target state in a second network, where the target state includes at least one of the following: a sending-only state, a non-receiving state, and a deactivated state;

[0229] The first core network node belongs to the first network.

[0230] Optionally, the first indication information includes at least one of the following:

[0231] The terminal only sends an indication in the second network;

[0232] Dual transmission indication;

[0233] Multiple transmission indication;

[0234] An indication that the terminal is only in a registered state in the second network;

[0235] Offline duration information of the terminal on the second network;

[0236] An indication that the terminal is in a deactivated state in the second network.

[0237] Optionally, the first indication information sent by the receiving terminal includes:

[0238] The first core network node receives a first message, where the first message carries the first indication information.

[0239] Optionally, the first message also carries a target identifier, and the target identifier is used by the first core network node to determine a second core network node in the second network that provides services for the terminal.

[0240] Optionally, the target identifier includes at least one of the following:

[0241] Globally unique temporary terminal identifier;

[0242] The world's only second core network node identifier.

[0243] Optionally, the first message includes at least one of the following:

[0244] Service request message;

[0245] Registration message;

[0246] Uplink non-access layer transmission message;

[0247] Configuration update command message.

[0248] Optionally, the method further includes:

[0249] The first core network node sends third indication information to the second core network node, where the third indication information is used to indicate that the terminal is in the target state under the second network.

[0250] Optionally, the method further includes:

[0251] The first core network node sends fourth indication information to the first network element, and the fourth indication information is used to instruct the first network element to send the address of the network element of the first network to the second network element when receiving the target request of the second network element, and the target request is used to request the first network element to feedback the address of the network element that provides service for the terminal.

[0252] Optionally, the method further includes:

[0253] The first core network node receives second indication information sent by the terminal, where the second indication information is used to indicate that the terminal is not in a target state or is in a sending and receiving state under the second network.

[0254] Optionally, the method further includes:

[0255] The first core network node sends fifth indication information to the second core network node, where the fifth indication information is used to indicate that the terminal is not in a target state or is in a sending and receiving state under the second network.

[0256] Optionally, the method further includes:

[0257] The first core network node sends sixth indication information to the first network element, and the sixth indication information is used to instruct the first network element to send the address of the network element of the second network to the second network element when receiving a target request from the second network element, or to send the address of the network element of the second network and the address of the network element of the first network to the second network element.

[0258] It should be noted that all descriptions about the first core network node side in the above embodiments are applicable to the embodiments of the information transmission method applied to the first core network node side, and can achieve the same technical effects, which will not be repeated here.

[0259] like Figure 6 As shown, the embodiment of the present application provides an information transmission method, including:

[0260] Step 601: A second core network node receives first indication information sent by a terminal, where the first indication information is used to indicate that the terminal is in a target state in a second network, where the target state includes at least one of the following: a sending-only state, a non-receiving state, and a deactivated state;

[0261] The second core network node belongs to the second network.

[0262] Optionally, the first indication information includes at least one of the following:

[0263] an indication sent by the terminal in the second network;

[0264] Dual transmission indication;

[0265] Multiple transmission indication;

[0266] an indication that the terminal is registered on the second network;

[0267] Offline duration information of the terminal on the second network;

[0268] The terminal is in a deactivated state in the second network.

[0269] Optionally, the first indication information sent by the receiving terminal includes:

[0270] The second core network node receives a second message, where the second message carries the first indication information;

[0271] The second message includes at least one of the following:

[0272] Service request message;

[0273] Tracking area update messages;

[0274] Uplink non-access layer transmission message.

[0275] Optionally, the method further includes:

[0276] The second core network node sends seventh indication information to the first network element, and the seventh indication information is used to instruct the first network element to send the address of the network element of the first network to the second network element when receiving the target request of the second network element, and the target request is used to request the first network element to feedback the address of the network element that provides service to the terminal.

[0277] Optionally, the method further includes:

[0278] The second core network node receives second indication information sent by the terminal, where the second indication information is used to indicate that the terminal is not in a target state or is in a sending and receiving state under the second network.

[0279] Optionally, the method further includes:

[0280] The second core network node sends an eighth indication message to the first network element, and the eighth indication message is used to instruct the first network element to send the address of the network element of the second network to the second network element when receiving the target request of the second network element, or to send the address of the network element of the second network and the address of the network element of the first network to the second network element.

[0281] It should be noted that all descriptions about the second core network node side in the above embodiments are applicable to the embodiments of the information transmission method applied to the second core network node side, and can achieve the same technical effects, which will not be repeated here.

[0282] like Figure 7 As shown, the embodiment of the present application provides an information transmission method, including:

[0283] Step 701: A first network element receives fourth indication information sent by a first core network node, where the fourth indication information is used to instruct the first network element to send an address of a network element of the first network to the second network element upon receiving a target request from the second network element; or

[0284] The first network element receives seventh indication information sent by the second core network node, where the seventh indication information is used to instruct the first network element to send an address of a network element of the first network to the second network element when receiving a target request from the second network element;

[0285] The target request is used to request the first network element to feedback the network element that provides services to the terminal; the first core network node belongs to the first network, and the second core network node belongs to the second network.

[0286] Optionally, the method further includes:

[0287] The first network element records that the network element under the first network provides services for the terminal; or

[0288] The first network element records that the second network is in a deactivated state.

[0289] Optionally, the method further includes:

[0290] When receiving the target request sent by the second network element, the first network element sends the address of the network element in the first network that provides services for the terminal to the second network element.

[0291] Optionally, the method further includes:

[0292] The first network element receives sixth indication information sent by the first core network node, where the sixth indication information is used to instruct the first network element to send the address of the network element of the second network to the second network element when receiving the target request of the second network element, or to send the address of the network element of the second network and the address of the network element of the first network to the second network element; or

[0293] The first network element receives the eighth indication information sent by the second core network node, and the eighth indication information is used to instruct the first network element to send the address of the network element of the second network to the second network element when receiving the target request of the second network element, or to send the address of the network element of the second network and the address of the network element of the first network to the second network element.

[0294] It should be noted that all descriptions about the first network element side in the above embodiments are applicable to the embodiments of the information transmission method applied to the first network element side, and can achieve the same technical effects, which will not be repeated here.

[0295] The information transmission method provided in the embodiment of the present application can be executed by an information transmission device. In the embodiment of the present application, the information transmission device provided in the embodiment of the present application is described by taking the information transmission method executed by the information transmission device as an example.

[0296] like Figure 8 As shown, the information transmission device 800 of the embodiment of the present application is deployed in a terminal, including:

[0297] The first sending module 801 is used to send first indication information to the first core network node or the second core network node, where the first indication information is used to indicate that the terminal is in a target state under the second network, and the target state includes at least one of the following: a sending-only state, a non-receiving state, and a deactivated state;

[0298] The first core network node belongs to a first network, and the second core network node belongs to a second network.

[0299] Optionally, the first indication information includes at least one of the following:

[0300] The terminal only sends an indication in the second network;

[0301] Dual transmission indication;

[0302] Multiple transmission indication;

[0303] An indication that the terminal is only in a registered state in the second network;

[0304] Offline duration information of the terminal on the second network;

[0305] An indication that the terminal is in a deactivated state in the second network.

[0306] Optionally, the first sending module 801 is configured to:

[0307] Sending a first message to the first core network node, where the first message carries the first indication information;

[0308] The first message includes at least one of the following:

[0309] Service request message;

[0310] Registration message;

[0311] Uplink non-access layer transmission message;

[0312] Configuration update command message.

[0313] Optionally, the first message also carries a target identifier, and the target identifier is used by the first core network node to determine a second core network node in the second network that provides services for the terminal.

[0314] Optionally, the target identifier includes at least one of the following:

[0315] Globally unique temporary terminal identifier;

[0316] The world's only second core network node identifier.

[0317] Optionally, the first sending module 801 is configured to:

[0318] Sending a second message to the second core network node, where the second message carries the first indication information;

[0319] The second message includes at least one of the following:

[0320] Service request message;

[0321] Tracking area update messages;

[0322] Uplink non-access layer transmission message.

[0323] Optionally, the device further comprises:

[0324] The recording module is used to record that the second network is in the target state.

[0325] Optionally, the device further comprises:

[0326] An execution module, configured to execute at least one of the following in the second network:

[0327] Only periodic update messages are sent;

[0328] Do not monitor messages sent by the access network device of the second network.

[0329] Optionally, the device further comprises:

[0330] The second sending module is used to send second indication information to the first core network node or the second core network node, and the second indication information is used to indicate that the terminal is not in the target state or is in the sending and receiving state under the second network.

[0331] It should be noted that the device embodiment is a device corresponding to the above-mentioned method, and all implementation methods in the above-mentioned method embodiment are applicable to the device embodiment and can achieve the same technical effect, which will not be repeated here.

[0332] The information transmission device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices other than a terminal. For example, the terminal may include but is not limited to the types of terminals 11 listed above, and other devices may be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.

[0333] The embodiment of the present application further provides a terminal, including a processor and a communication interface, wherein the communication interface is used to send first indication information to a first core network node or a second core network node, the first indication information is used to indicate that the terminal is in a target state under the second network, and the target state includes at least one of the following: a sending-only state, a non-receiving state, and a deactivated state;

[0334] The first core network node belongs to a first network, and the second core network node belongs to a second network.

[0335] Optionally, the first indication information includes at least one of the following:

[0336] The terminal only sends an indication in the second network;

[0337] Dual transmission indication;

[0338] Multiple transmission indication;

[0339] An indication that the terminal is only in a registered state in the second network;

[0340] Offline duration information of the terminal on the second network;

[0341] An indication that the terminal is in a deactivated state in the second network.

[0342] Optionally, the communication interface is used for:

[0343] A first message is sent to the first core network node, where the first message carries the first indication information.

[0344] Optionally, the first message also carries a target identifier, and the target identifier is used by the first core network node to determine a second core network node in the second network that provides services for the terminal.

[0345] Optionally, the target identifier includes at least one of the following:

[0346] Globally unique temporary terminal identifier;

[0347] The world's only second core network node identifier.

[0348] Optionally, the first message includes at least one of the following:

[0349] Service request message;

[0350] Registration message;

[0351] Uplink non-access layer transmission message;

[0352] Configuration update command message.

[0353] Optionally, the communication interface is used for:

[0354] Sending a second message to the second core network node, where the second message carries the first indication information;

[0355] The second message includes at least one of the following:

[0356] Service request message;

[0357] Tracking area update messages;

[0358] Uplink non-access layer transmission message.

[0359] Optionally, the processor is configured to:

[0360] Recording that the second network is in the target state.

[0361] Optionally, the processor is configured to:

[0362] In the second network, at least one of the following is performed:

[0363] Only periodic update messages are sent;

[0364] Do not monitor messages sent by the access network device of the second network.

[0365] Optionally, the communication interface is used for:

[0366] Send second indication information to the first core network node or the second core network node, where the second indication information is used to indicate that the terminal is not in a target state or is in a sending and receiving state under the second network.

[0367] Preferably, the embodiment of the present application further provides a terminal, including a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements each process of the above-mentioned information transmission method embodiment and can achieve the same technical effect, which will not be described here to avoid repetition. Specifically, Fig. 9 A schematic diagram of the hardware structure of a terminal for implementing an embodiment of the present application.

[0368] The terminal 900 includes but is not limited to: a radio frequency unit 901, a network module 902, an audio output unit 903, an input unit 904, a sensor 905, a display unit 906, a user input unit 907, an interface unit 908, a memory 909 and at least some of the components of a processor 910.

[0369] Those skilled in the art will appreciate that the terminal 900 may also include a power source (such as a battery) for supplying power to various components, and the power source may be logically connected to the processor 910 through a power management system, thereby implementing functions such as managing charging, discharging, and power consumption management through the power management system. Fig. 9 The terminal structure shown in the figure does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be described in detail here.

[0370] It should be understood that in the embodiment of the present application, the input unit 904 may include a graphics processing unit (GPU) 9041 and a microphone 9042, and the graphics processor 9041 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 906 may include a display panel 9061, and the display panel 9061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 907 includes a touch panel 9071 and at least one of other input devices 9072. The touch panel 9071 is also called a touch screen. The touch panel 9071 may include two parts: a touch detection device and a touch controller. Other input devices 9072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

[0371] In the embodiment of the present application, after receiving downlink data from the access network device, the radio frequency unit 901 can transmit the data to the processor 910 for processing; in addition, the radio frequency unit 901 can send uplink data to the network side device. Generally, the radio frequency unit 901 includes but is not limited to an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0372] The memory 909 can be used to store software programs or instructions and various data. The memory 909 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, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.), etc. In addition, the memory 909 may include a volatile memory or a non-volatile memory, or the memory 909 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 909 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0373] The processor 910 may include one or more processing units; optionally, the processor 910 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 910.

[0374] Optionally, the first indication information includes at least one of the following:

[0375] The terminal only sends an indication in the second network;

[0376] Dual transmission indication;

[0377] Multiple transmission indication;

[0378] An indication that the terminal is only in a registered state in the second network;

[0379] Offline duration information of the terminal on the second network;

[0380] An indication that the terminal is in a deactivated state in the second network.

[0381] Optionally, the radio frequency unit 901 is configured to:

[0382] A first message is sent to the first core network node, where the first message carries the first indication information.

[0383] Optionally, the first message also carries a target identifier, and the target identifier is used by the first core network node to determine a second core network node in the second network that provides services for the terminal.

[0384] Optionally, the target identifier includes at least one of the following:

[0385] Globally unique temporary terminal identifier;

[0386] The world's only second core network node identifier.

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

[0388] Service request message;

[0389] Registration message;

[0390] Uplink non-access layer transmission message;

[0391] Configuration update command message.

[0392] Optionally, the radio frequency unit 901 is configured to:

[0393] Sending a second message to the second core network node, where the second message carries the first indication information;

[0394] The second message includes at least one of the following:

[0395] Service request message;

[0396] Tracking area update messages;

[0397] Uplink non-access layer transmission message.

[0398] Optionally, the processor is configured to:

[0399] Recording that the second network is in the target state.

[0400] Optionally, the processor is configured to:

[0401] In the second network, at least one of the following is performed:

[0402] Only periodic update messages are sent;

[0403] Do not monitor messages sent by the access network device of the second network.

[0404] Optionally, the radio frequency unit 901 is configured to:

[0405] Send second indication information to the first core network node or the second core network node, where the second indication information is used to indicate that the terminal is not in a target state or is in a sending and receiving state under the second network.

[0406] Preferably, an embodiment of the present application also provides a terminal, including a processor, a memory, and a program or instruction stored in the memory and executable on the processor. When the program or instruction is executed by the processor, each process of the above-mentioned information transmission method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0407] An embodiment of the present application also provides a computer-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 information transmission method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0408] The computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0409] like Fig.10 As shown, the information transmission device 1000 of the embodiment of the present application is deployed in the first core network node, including:

[0410] The first receiving module 1001 is used to receive first indication information sent by a terminal, where the first indication information is used to indicate that the terminal is in a target state under a second network, where the target state includes at least one of the following: a sending-only state, a non-receiving state, and a deactivated state;

[0411] The first core network node belongs to the first network.

[0412] Optionally, the first indication information includes at least one of the following:

[0413] The terminal only sends an indication in the second network;

[0414] Dual transmission indication;

[0415] Multiple transmission indication;

[0416] An indication that the terminal is only in a registered state in the second network;

[0417] Offline duration information of the terminal on the second network;

[0418] An indication that the terminal is in a deactivated state in the second network.

[0419] Optionally, the first receiving module 1001 is used to:

[0420] A first message is received, where the first message carries the first indication information.

[0421] Optionally, the first message also carries a target identifier, and the target identifier is used by the first core network node to determine a second core network node in the second network that provides services for the terminal.

[0422] Optionally, the target identifier includes at least one of the following:

[0423] Globally unique temporary terminal identifier;

[0424] The world's only second core network node identifier.

[0425] Optionally, the first message includes at least one of the following:

[0426] Service request message;

[0427] Registration message;

[0428] Uplink non-access layer transmission message;

[0429] Configuration update command message.

[0430] Optionally, the device further comprises:

[0431] The third sending module is used to send third indication information to the second core network node, and the third indication information is used to indicate that the terminal is in the target state under the second network.

[0432] Optionally, the device further comprises:

[0433] The fourth sending module is used to send fourth indication information to the first network element, and the fourth indication information is used to instruct the first network element to send the address of the network element of the first network to the second network element when receiving the target request of the second network element, and the target request is used to request the first network element to feedback the address of the network element that provides service to the terminal.

[0434] Optionally, the device further comprises:

[0435] The fourth receiving module is used to receive second indication information sent by the terminal, where the second indication information is used to indicate that the terminal is not in the target state or is in the sending and receiving state under the second network.

[0436] Optionally, the device further comprises:

[0437] The fifth sending module is used to send fifth indication information to the second core network node, and the fifth indication information is used to indicate that the terminal is not in the target state or is in the sending and receiving state under the second network.

[0438] Optionally, the device further comprises:

[0439] The sixth sending module is used to send the sixth indication information to the first network element, and the sixth indication information is used to instruct the first network element to send the address of the network element of the second network to the second network element when receiving the target request of the second network element, or to send the address of the network element of the second network and the address of the network element of the first network to the second network element.

[0440] It should be noted that the device embodiment corresponds to the above method, and all implementation methods in the above method embodiment are applicable to the device embodiment and can achieve the same technical effect.

[0441] The information transmission device provided in the embodiment of the present application can achieve Figure 5 The various processes implemented by the method embodiment and achieving the same technical effect are not described here to avoid repetition.

[0442] The embodiment of the present application further provides a core network node, the core network node being a first core network node, including a processor and a communication interface, the communication interface being used to receive first indication information sent by a terminal, the first indication information being used to indicate that the terminal is in a target state under a second network, the target state including at least one of the following: a sending-only state, a non-receiving state, and a deactivated state;

[0443] Wherein, the first core network node belongs to the first network.

[0444] Optionally, the first indication information includes at least one of the following:

[0445] The terminal only sends an indication in the second network;

[0446] Dual transmission indication;

[0447] Multiple transmission indication;

[0448] An indication that the terminal is only in a registered state in the second network;

[0449] Offline duration information of the terminal on the second network;

[0450] An indication that the terminal is in a deactivated state in the second network.

[0451] Optionally, the communication interface is used to:

[0452] A first message is received, where the first message carries the first indication information.

[0453] Optionally, the first message also carries a target identifier, and the target identifier is used by the first core network node to determine a second core network node in the second network that provides services for the terminal.

[0454] Optionally, the target identifier includes at least one of the following:

[0455] Globally unique temporary terminal identifier;

[0456] The world's only second core network node identifier.

[0457] Optionally, the first message includes at least one of the following:

[0458] Service request message;

[0459] Registration message;

[0460] Uplink non-access layer transmission message;

[0461] Configuration update command message.

[0462] Optionally, the communication interface is further used for:

[0463] Send third indication information to the second core network node, where the third indication information is used to indicate that the terminal is in the target state under the second network.

[0464] Optionally, the communication interface is further used for:

[0465] Send fourth indication information to the first network element, wherein the fourth indication information is used to instruct the first network element to send the address of the network element of the first network to the second network element when receiving the target request of the second network element, and the target request is used to request the first network element to feedback the address of the network element that provides service to the terminal.

[0466] Optionally, the communication interface is further used for:

[0467] Second indication information sent by the terminal is received, where the second indication information is used to indicate that the terminal is not in a target state or is in a sending and receiving state under the second network.

[0468] Optionally, the communication interface is further used for:

[0469] Send fifth indication information to the second core network node, where the fifth indication information is used to indicate that the terminal is not in a target state or is in a sending and receiving state under the second network.

[0470] Optionally, the communication interface is further used for:

[0471] Send sixth indication information to the first network element, where the sixth indication information is used to instruct the first network element to send the address of the network element of the second network to the second network element upon receiving a target request from the second network element, or to send the address of the network element of the second network and the address of the network element of the first network to the second network element.

[0472] The first core network node embodiment corresponds to the above-mentioned first core network node side method embodiment. Each implementation process and implementation method of the above-mentioned method embodiment can be applied to the first core network node embodiment and can achieve the same technical effect.

[0473] Specifically, the embodiment of the present application also provides a core network node. Fig.11 As shown, the core network node 1100 includes: a processor 1101, a network interface 1102 and a memory 1103. The network interface 1102 is, for example, a common public radio interface (CPRI).

[0474] Specifically, the core network node 1100 of the embodiment of the present invention further includes: an instruction or program stored in the memory 1103 and executable on the processor 1101, and the processor 1101 calls the instruction or program in the memory 1103 to execute Fig.10 The methods executed by the modules shown achieve the same technical effects, and therefore will not be described here in detail to avoid repetition.

[0475] 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 information transmission method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0476] The readable storage medium may be non-volatile or non-transient. The readable storage medium may include 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.

[0477] like Fig.12 As shown, the information transmission device 1200 of the embodiment of the present application is deployed in the second core network node, including:

[0478] The second receiving module 1201 is used to receive first indication information sent by the terminal, where the first indication information is used to indicate that the terminal is in a target state under the second network, and the target state includes at least one of the following: a sending-only state, a non-receiving state, and a deactivated state;

[0479] The second core network node belongs to the second network.

[0480] Optionally, the first indication information includes at least one of the following:

[0481] an indication sent by the terminal in the second network;

[0482] Dual transmission indication;

[0483] Multiple transmission indication;

[0484] an indication that the terminal is registered on the second network;

[0485] Offline duration information of the terminal on the second network;

[0486] The terminal is in a deactivated state in the second network.

[0487] Optionally, the second receiving module 1201 is configured to:

[0488] receiving a second message, where the second message carries the first indication information;

[0489] The second message includes at least one of the following:

[0490] Service request message;

[0491] Tracking area update messages;

[0492] Uplink non-access layer transmission message.

[0493] Optionally, the device further comprises:

[0494] The seventh sending module is used to send the seventh indication information to the first network element, and the seventh indication information is used to instruct the first network element to send the address of the network element of the first network to the second network element when receiving the target request of the second network element, and the target request is used to request the first network element to feedback the address of the network element that provides service to the terminal.

[0495] Optionally, the device further comprises:

[0496] The fifth receiving module is used to receive second indication information sent by the terminal, where the second indication information is used to indicate that the terminal is not in the target state or is in the sending and receiving state under the second network.

[0497] Optionally, the device further comprises:

[0498] An eighth sending module is used to send eighth indication information to the first network element, and the eighth indication information is used to instruct the first network element to send the address of the network element of the second network to the second network element when receiving the target request of the second network element, or to send the address of the network element of the second network and the address of the network element of the first network to the second network element.

[0499] It should be noted that the device embodiment corresponds to the above method, and all implementation methods in the above method embodiment are applicable to the device embodiment and can achieve the same technical effect.

[0500] The information transmission device provided in the embodiment of the present application can achieve Figure 6 The various processes implemented by the method embodiment and achieving the same technical effect are not described here to avoid repetition.

[0501] The embodiment of the present application further provides a core network node, the core network node being a second core network node, including a processor and a communication interface, the communication interface being used to receive first indication information sent by a terminal, the first indication information being used to indicate that the terminal is in a target state under a second network, the target state including at least one of the following: a sending-only state, a non-receiving state, and a deactivated state;

[0502] The second core network node belongs to the second network.

[0503] Optionally, the first indication information includes at least one of the following:

[0504] an indication sent by the terminal in the second network;

[0505] Dual transmission indication;

[0506] Multiple transmission indication;

[0507] an indication that the terminal is registered on the second network;

[0508] Offline duration information of the terminal on the second network;

[0509] The terminal is in a deactivated state in the second network.

[0510] Optionally, the communication interface is used to:

[0511] receiving a second message, where the second message carries the first indication information;

[0512] The second message includes at least one of the following:

[0513] Service request message;

[0514] Tracking area update messages;

[0515] Uplink non-access layer transmission message.

[0516] Optionally, the communication interface is further used for:

[0517] Send seventh indication information to the first network element, wherein the seventh indication information is used to instruct the first network element to send the address of the network element of the first network to the second network element when receiving the target request of the second network element, and the target request is used to request the first network element to feedback the address of the network element that provides service to the terminal.

[0518] Optionally, the communication interface is further used for:

[0519] Second indication information sent by the terminal is received, where the second indication information is used to indicate that the terminal is not in a target state or is in a sending and receiving state under the second network.

[0520] Optionally, the communication interface is further used for:

[0521] Sending eighth indication information to the first network element, wherein the eighth indication information is used to instruct the first network element to send the address of the network element of the second network to the second network element when receiving a target request from the second network element, or to send the address of the network element of the second network and the address of the network element of the first network to the second network element.

[0522] The second core network node embodiment corresponds to the above-mentioned second core network node side method embodiment. The various implementation processes and implementation methods of the above-mentioned method embodiments can be applied to the second core network node embodiment and can achieve the same technical effects.

[0523] Specifically, the embodiment of the present application further provides a core network node. The core network node is a second core network node. The structure of the second core network node can be found in Fig.11 As shown, no further details are given here.

[0524] Specifically, the second core network node in the embodiment of the present invention further includes: an instruction or program stored in the memory and executable on the processor, and the processor calls the instruction or program in the memory to execute Fig.12 The methods executed by the modules shown achieve the same technical effects, and therefore will not be described here in detail to avoid repetition.

[0525] 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 information transmission method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0526] The readable storage medium may be non-volatile or non-transient. The readable storage medium may include 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.

[0527] like Fig.13 As shown, the information transmission device 1300 of the embodiment of the present application is deployed in the first network element, including:

[0528] The third receiving module 1301 is used to receive fourth indication information sent by the first core network node, where the fourth indication information is used to instruct the first network element to send the address of the network element of the first network to the second network element when receiving the target request of the second network element; or

[0529] receiving seventh indication information sent by the second core network node, wherein the seventh indication information is used to instruct the first network element to send an address of a network element of the first network to the second network element when receiving a target request from the second network element;

[0530] The target request is used to request the first network element to feedback the network element that provides services to the terminal; the first core network node belongs to the first network, and the second core network node belongs to the second network.

[0531] Optionally, the device further comprises:

[0532] A processing module is used to record that a network element under the first network provides services for the terminal; or

[0533] It is recorded that the second network is in a deactivated state.

[0534] Optionally, the device further comprises:

[0535] The ninth sending module is used to send the address of the network element in the first network that provides services for the terminal to the second network element when receiving the target request sent by the second network element.

[0536] Optionally, the device further comprises:

[0537] a sixth receiving module, configured to receive sixth indication information sent by the first core network node, wherein the sixth indication information is used to instruct the first network element to send the address of the network element of the second network to the second network element upon receiving the target request of the second network element, or to send the address of the network element of the second network and the address of the network element of the first network to the second network element; or

[0538] Receive the eighth indication information sent by the second core network node, and the eighth indication information is used to instruct the first network element to send the address of the network element of the second network to the second network element when receiving the target request of the second network element, or to send the address of the network element of the second network and the address of the network element of the first network to the second network element.

[0539] It should be noted that the device embodiment corresponds to the above method, and all implementation methods in the above method embodiment are applicable to the device embodiment and can achieve the same technical effect.

[0540] The information transmission device provided in the embodiment of the present application can achieve Figure 7 The various processes implemented by the method embodiment and achieving the same technical effect are not described here to avoid repetition.

[0541] The embodiment of the present application further provides an information transmission network element, which is a first network element, including a processor and a communication interface, wherein the communication interface is used to receive fourth indication information sent by a first core network node, and the fourth indication information is used to instruct the first network element to send an address of a network element of the first network to the second network element when receiving a target request from the second network element; or

[0542] receiving seventh indication information sent by the second core network node, wherein the seventh indication information is used to instruct the first network element to send an address of a network element of the first network to the second network element when receiving a target request from the second network element;

[0543] The target request is used to request the first network element to feedback the network element that provides services to the terminal; the first core network node belongs to the first network, and the second core network node belongs to the second network.

[0544] Optionally, the processor is configured to:

[0545] Recording that a network element under the first network provides services for the terminal; or

[0546] It is recorded that the second network is in a deactivated state.

[0547] Optionally, the communication interface is further used for:

[0548] In case of receiving the target request sent by the second network element, an address of a network element in the first network that provides services for the terminal is sent to the second network element.

[0549] Optionally, the communication interface is further used for:

[0550] receiving sixth indication information sent by the first core network node, wherein the sixth indication information is used to instruct the first network element to send the address of the network element of the second network to the second network element when receiving the target request of the second network element, or to send the address of the network element of the second network and the address of the network element of the first network to the second network element; or

[0551] Receive the eighth indication information sent by the second core network node, and the eighth indication information is used to instruct the first network element to send the address of the network element of the second network to the second network element when receiving the target request of the second network element, or to send the address of the network element of the second network and the address of the network element of the first network to the second network element.

[0552] The first network element embodiment corresponds to the above-mentioned first network element side method embodiment. Each implementation process and implementation method of the above-mentioned method embodiment can be applied to the first network element embodiment and can achieve the same technical effect.

[0553] Specifically, the embodiment of the present application further provides an information transmission network element, wherein the information transmission network element is a first network element, and the structure of the first network element can be seen in Fig.11 As shown, no further description is given here.

[0554] Specifically, the first network element of the embodiment of the present invention further includes: an instruction or program stored in the memory and executable on the processor, and the processor calls the instruction or program in the memory to execute Fig.13 The methods executed by the modules shown achieve the same technical effects, and therefore will not be described here in detail to avoid repetition.

[0555] 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 information transmission method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0556] The readable storage medium may be non-volatile or non-transient. The readable storage medium may include 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.

[0557] Optional, such as Fig.14 As shown, the embodiment of the present application also provides a communication device 1400, including a processor 1401 and a memory 1402, and the memory 1402 stores a program or instruction that can be run on the processor 1401. For example, when the communication device 1400 is a terminal, the program or instruction is executed by the processor 1401 to implement the various steps of the above-mentioned information transmission method embodiment, and can achieve the same technical effect. When the communication device 1400 is a first core network node, the program or instruction is executed by the processor 1401 to implement the various steps of the above-mentioned information transmission method embodiment, and can achieve the same technical effect. When the communication device 1400 is a second core network node, the program or instruction is executed by the processor 1401 to implement the various steps of the above-mentioned information transmission method embodiment, and can achieve the same technical effect. When the communication device 1400 is a first network element, the program or instruction is executed by the processor 1401 to implement the various steps of the above-mentioned information transmission method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0558] An embodiment of the present application further provides a chip, which includes 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 various processes of the above-mentioned information transmission method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0559] 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.

[0560] The embodiments of the present application further provide a computer program / program product, which is stored in a storage medium, and is executed by at least one processor to implement the various processes of the above-mentioned information transmission method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0561] An embodiment of the present application also provides a communication system, including: a terminal, a first core network node, a second core network node and a first network element, wherein the terminal can be used to execute the steps of the above-mentioned information transmission method, the first core network node can be used to execute the steps of the above-mentioned information transmission method, the second core network node can be used to execute the steps of the above-mentioned information transmission method, and the first network element can be used to execute the steps of the above-mentioned information transmission method.

[0562] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including 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 one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the method and device in the embodiment 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 reverse 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.

[0563] Through the description of the above implementation methods, 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, and of course, can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, disk, CD, etc.), including several instructions to enable a terminal or a network-side device to execute the methods described in each embodiment of the present application.

[0564] 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 the present application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of the present application and the scope of protection of the claims, and these implementation methods are all within the protection of the present application.

Claims

1. An information transmission method, characterized in that: include: The terminal sends first indication information to the first core network node or the second core network node, where the first indication information is used to indicate that the terminal is in a target state under the second network, where the target state includes at least one of the following: a sending-only state, a non-receiving state, and a deactivated state; The first core network node belongs to a first network, and the second core network node belongs to a second network.

2. The method according to claim 1, characterized in that The first indication information includes at least one of the following: The terminal only sends an indication in the second network; Dual transmission indication; Multiple transmission indication; An indication that the terminal is only in a registered state in the second network; Offline duration information of the terminal on the second network; An indication that the terminal is in a deactivated state in the second network.

3. The method according to claim 1 or 2, characterized in that: The sending the first indication information to the first core network node includes: The terminal sends a first message to the first core network node, where the first message carries the first indication information.

4. The method according to claim 3, characterized in that The first message also carries a target identifier, and the target identifier is used by the first core network node to determine a second core network node in the second network that provides services for the terminal.

5. The method according to claim 4, characterized in that The target identifier includes at least one of the following: Globally unique temporary terminal identifier; The world's only second core network node identifier.

6. The method according to any one of claims 3 to 5, characterized in that: The first message includes at least one of the following: Service request message; Registration message; Uplink non-access layer transmission message; Configuration update command message.

7. The method according to claim 1 or 2, characterized in that: The sending the first indication information to the second core network node includes: The terminal sends a second message to the second core network node, where the second message carries the first indication information; The second message includes at least one of the following: Service request message; Tracking area update messages; Uplink non-access layer transmission message.

8. The method according to any one of claims 1 to 7, characterized in that: Also includes: The terminal records that the second network is in the target state.

9. The method according to any one of claims 1 to 8, characterized in that: Also includes: The terminal performs at least one of the following in the second network: Only periodic update messages are sent; Do not monitor messages sent by the access network device of the second network.

10. The method according to any one of claims 1 to 9, characterized in that: Also includes: The terminal sends second indication information to the first core network node or the second core network node, where the second indication information is used to indicate that the terminal is not in a target state or is in a sending and receiving state under the second network.

11. An information transmission method, characterized in that: include: The first core network node receives first indication information sent by the terminal, where the first indication information is used to indicate that the terminal is in a target state under the second network, where the target state includes at least one of the following: a sending-only state, a non-receiving state, and a deactivated state; The first core network node belongs to the first network.

12. The method according to claim 11, characterized in that The first indication information includes at least one of the following: The terminal only sends an indication in the second network; Dual transmission indication; Multiple transmission indication; An indication that the terminal is only in a registered state in the second network; Offline duration information of the terminal on the second network; An indication that the terminal is in a deactivated state in the second network.

13. The method according to claim 11 or 12, characterized in that: The first indication information sent by the receiving terminal includes: The first core network node receives a first message, where the first message carries the first indication information.

14. The method according to claim 13, characterized in that The first message also carries a target identifier, and the target identifier is used by the first core network node to determine a second core network node in the second network that provides services for the terminal.

15. The method according to claim 14, characterized in that The target identifier includes at least one of the following: Globally unique temporary terminal identifier; The world's only second core network node identifier.

16. The method according to any one of claims 13 to 15, characterized in that: The first message includes at least one of the following: Service request message; Registration message; Uplink non-access layer transmission message; Configuration update command message.

17. The method according to any one of claims 11 to 14, characterized in that: Also includes: The first core network node sends third indication information to the second core network node, where the third indication information is used to indicate that the terminal is in the target state under the second network.

18. The method according to any one of claims 11 to 17, characterized in that: Also includes: The first core network node sends fourth indication information to the first network element, and the fourth indication information is used to instruct the first network element to send the address of the network element of the first network to the second network element when receiving the target request of the second network element, and the target request is used to request the first network element to feedback the address of the network element that provides service for the terminal.

19. The method according to any one of claims 11 to 18, characterized in that: Also includes: The first core network node receives second indication information sent by the terminal, where the second indication information is used to indicate that the terminal is not in a target state or is in a sending and receiving state under the second network.

20. The method according to claim 19, characterized in that Also includes: The first core network node sends fifth indication information to the second core network node, where the fifth indication information is used to indicate that the terminal is not in a target state or is in a sending and receiving state under the second network.

21. The method according to claim 19 or 20, characterized in that Also includes: The first core network node sends sixth indication information to the first network element, and the sixth indication information is used to instruct the first network element to send the address of the network element of the second network to the second network element when receiving a target request from the second network element, or to send the address of the network element of the second network and the address of the network element of the first network to the second network element.

22. An information transmission method, characterized in that: include: The second core network node receives first indication information sent by the terminal, where the first indication information is used to indicate that the terminal is in a target state under the second network, where the target state includes at least one of the following: a sending-only state, a non-receiving state, and a deactivated state; The second core network node belongs to the second network.

23. The method according to claim 22, characterized in that The first indication information includes at least one of the following: an indication sent by the terminal in the second network; Dual transmission indication; Multiple transmission indication; an indication that the terminal is registered on the second network; Offline duration information of the terminal on the second network; The terminal is in a deactivated state in the second network.

24. The method according to claim 22 or 23, characterized in that The first indication information sent by the receiving terminal includes: The second core network node receives a second message, where the second message carries the first indication information; The second message includes at least one of the following: Service request message; Tracking area update messages; Uplink non-access layer transmission message.

25. The method according to any one of claims 22 to 24, characterized in that: Also includes: The second core network node sends seventh indication information to the first network element, and the seventh indication information is used to instruct the first network element to send the address of the network element of the first network to the second network element when receiving the target request of the second network element, and the target request is used to request the first network element to feedback the address of the network element that provides service to the terminal.

26. The method according to any one of claims 22 to 25, characterized in that: Also includes: The second core network node receives second indication information sent by the terminal, where the second indication information is used to indicate that the terminal is not in a target state or is in a sending and receiving state under the second network.

27. The method according to claim 26, characterized in that Also includes: The second core network node sends an eighth indication message to the first network element, and the eighth indication message is used to instruct the first network element to send the address of the network element of the second network to the second network element when receiving the target request of the second network element, or to send the address of the network element of the second network and the address of the network element of the first network to the second network element.

28. An information transmission method, characterized in that: include: The first network element receives fourth indication information sent by the first core network node, where the fourth indication information is used to instruct the first network element to send an address of a network element of the first network to the second network element when receiving a target request from the second network element; or The first network element receives seventh indication information sent by the second core network node, where the seventh indication information is used to instruct the first network element to send an address of a network element of the first network to the second network element when receiving a target request from the second network element; The target request is used to request the first network element to feedback the network element that provides services to the terminal; the first core network node belongs to the first network, and the second core network node belongs to the second network.

29. The method according to claim 28, characterized in that Also includes: The first network element records that the network element under the first network provides services for the terminal; or The first network element records that the second network is in a deactivated state.

30. The method according to claim 28 or 29, characterized in that Also includes: When receiving the target request sent by the second network element, the first network element sends the address of the network element in the first network that provides services for the terminal to the second network element.

31. The method according to any one of claims 28 to 30, characterized in that: Also includes: The first network element receives sixth indication information sent by the first core network node, where the sixth indication information is used to instruct the first network element to send the address of the network element of the second network to the second network element when receiving the target request of the second network element, or to send the address of the network element of the second network and the address of the network element of the first network to the second network element; or The first network element receives the eighth indication information sent by the second core network node, and the eighth indication information is used to instruct the first network element to send the address of the network element of the second network to the second network element when receiving the target request of the second network element, or to send the address of the network element of the second network and the address of the network element of the first network to the second network element.

32. An information transmission device, deployed in a terminal, characterized in that: include: A first sending module, configured to send first indication information to the first core network node or the second core network node, wherein the first indication information is used to indicate that the terminal is in a target state under the second network, and the target state includes at least one of the following: a sending-only state, a non-receiving state, and a deactivated state; The first core network node belongs to a first network, and the second core network node belongs to a second network.

33. A terminal, characterized in that: The method comprises 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 transmission method according to any one of claims 1 to 10 are implemented.

34. An information transmission device, deployed in a first core network node, characterized in that: include: A first receiving module, configured to receive first indication information sent by a terminal, wherein the first indication information is used to indicate that the terminal is in a target state under a second network, wherein the target state includes at least one of the following: a sending-only state, a non-receiving state, and a deactivated state; The first core network node belongs to the first network.

35. A core network node, the core network node being a first core network node, characterized in that: It includes 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 transmission method as described in any one of claims 11 to 21 are implemented.

36. An information transmission device, deployed in a second core network node, characterized in that: include: A second receiving module, configured to receive first indication information sent by a terminal, wherein the first indication information is used to indicate that the terminal is in a target state under a second network, and the target state includes at least one of the following: a sending-only state, a non-receiving state, and a deactivated state; The second core network node belongs to the second network.

37. A core network node, the core network node being a second core network node, characterized in that: It includes 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 transmission method as described in any one of claims 22 to 27 are implemented.

38. An information transmission device, deployed in a first network element, characterized in that: include: A third receiving module, configured to receive fourth indication information sent by the first core network node, wherein the fourth indication information is used to instruct the first network element to send an address of a network element of the first network to the second network element when receiving a target request from the second network element; or receiving seventh indication information sent by the second core network node, wherein the seventh indication information is used to instruct the first network element to send an address of a network element of the first network to the second network element when receiving a target request from the second network element; The target request is used to request the first network element to feedback the network element that provides services to the terminal; the first core network node belongs to the first network, and the second core network node belongs to the second network.

39. An information transmission network element, the information transmission network element being a first network element, characterized in that: It 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 information transmission method as described in any one of claims 28 to 31 are implemented.

40. A readable storage medium, characterized in that: The readable storage medium stores programs or instructions, and when the programs or instructions are executed by the processor, the steps of the information transmission method as described in any one of claims 1-31 are implemented.

Images