Registration method and apparatus, network information recording method and apparatus, terminal, and network side device

Abstract

The present application relates to the technical field of communications, and discloses a registration method and apparatus, a network information recording method and apparatus, a terminal, and a network side device. The registration method in embodiments of the present application comprises: when a terminal is in a registered state in a first network, the terminal initiates a registration request to a second network, wherein when the terminal is successfully registered in the second network, the terminal is in the registered state in both the first network and the second network.

Description

Registration method, network information recording method, device, terminal and network side equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202311174197.6 filed in China on September 12, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application belongs to the field of communication technology, and specifically relates to a registration method, a network information recording method, an apparatus, a terminal, and a network-side device. Background Art

[0004] In some related technologies, when an interface (e.g., an N26 interface) exists between the core networks of a first network and a second network, a terminal can only be registered with one of the first and second networks at a time. When the terminal is transmitting data within the first network and the transmission quality is poor, the terminal must wait for the network to switch or redirect it to the second network. Only then can the terminal leave the first network, connect to the second network, and remain registered with the second network. In these related technologies, the network may initiate a handover or redirection too late, or the network may configure unreasonable parameters for the handover or redirection, resulting in poor communication performance for the terminal.

[0005] Summary of the Invention

[0006] The embodiments of the present application provide a registration method, a network information recording method, an apparatus, a terminal, and a network-side device, which can solve the problem of poor communication performance of the terminal.

[0007] In a first aspect, a registration method is provided, comprising:

[0008] When the terminal is in a registered state on the first network, the terminal initiates a registration request to the second network;

[0009] Wherein, when the second network registration is successful, the terminal is in a registered state in both the first network and the second network.

[0010] In a second aspect, a network information recording method is provided, comprising:

[0011] The core network element records the information of the terminal in the second network when the information of the terminal in the first network is recorded.

[0012] In a third aspect, a registration device is provided, comprising:

[0013] An initiating module, configured to initiate a registration request to a second network when the first network is in a registered state;

[0014] If the second network registration is successful, the terminal is in a registered state in both the first network and the second network.

[0015] In a fourth aspect, a network information recording device is provided, comprising:

[0016] The first recording module is configured to record the information of the terminal in the second network when the information of the terminal in the first network is recorded.

[0017] In a fifth aspect, a terminal is provided, which 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 registration method provided in the embodiment of the present application are implemented.

[0018] In a sixth aspect, a terminal is provided, comprising a processor and a communication interface, wherein the communication interface is used to initiate a registration request to a second network when the first network is in a registered state; wherein, if the registration with the second network is successful, the terminal is in a registered state in both the first network and the second network.

[0019] In the seventh aspect, a network side device is provided, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the network information recording method provided in the embodiment of the present application are implemented.

[0020] In an eighth aspect, a network side device is provided, including a processor and a communication interface, wherein the processor is configured to record information of the terminal in a second network when information of the terminal in a first network is recorded.

[0021] In the ninth 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 registration method provided in the embodiment of the present application are implemented, or the steps of the network information recording method provided in the embodiment of the present application are implemented.

[0022] In the tenth aspect, a wireless communication system is provided, including: a terminal and a network side device, wherein the terminal can be used to execute the steps of the registration method provided in the embodiment of the present application, and the network side device can be used to execute the steps of the network information recording method provided in the embodiment of the present application.

[0023] In the eleventh aspect, a chip is provided, which includes a processor and a communication interface, the communication interface and the processor are coupled, and the processor is used to run programs or instructions to implement the registration method provided in the embodiment of the present application, or to implement the network information recording method provided in the embodiment of the present application.

[0024] In the twelfth aspect, a computer program / program product is provided, which is stored in a storage medium, and the program / program product is executed by at least one processor to implement the steps of the registration method provided in the embodiment of the present application, or the program / program product is executed by at least one processor to implement the steps of the network information recording method provided in the embodiment of the present application.

[0025] In this embodiment of the present application, when a terminal is registered on a first network, the terminal initiates a registration request to a second network. If registration on the second network is successful, the terminal is registered on both the first and second networks. Since the terminal is registered on both the first and second networks, communication between the terminal and the first network can be performed, or communication on the second network can be performed quickly, thereby improving the terminal's communication performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] FIG1 is a block diagram of a wireless communication system to which embodiments of the present application may be applied;

[0027] FIG2 is a flow chart of a registration method provided in an embodiment of the present application;

[0028] FIG3 is a flow chart of a network information recording method provided by an embodiment of the present application;

[0029] FIG4 is a schematic diagram of a registration method provided in an embodiment of the present application;

[0030] FIG5 is a structural diagram of a registration device provided in an embodiment of the present application;

[0031] FIG6 is a structural diagram of a network information recording device provided in an embodiment of the present application;

[0032] FIG7 is a structural diagram of a communication device provided in an embodiment of the present application;

[0033] FIG8 is a structural diagram of a terminal provided in an embodiment of the present application;

[0034] FIG9 is a structural diagram of another network-side device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0035] The following will be combined with the accompanying drawings in the embodiments of this application to clearly describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0036] The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "or" in this application represents at least one of the connected objects. For example, "A or B" covers three options, namely, Option 1: including A but not including B; Option 2: including B but not including A; Option 3: including both A and B. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0037] The term "indication" in this application can be either a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, the operation to be performed, or the requested result, etc. in the instruction sent; an indirect indication can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the operation to be performed or the requested result, etc. based on the judgment result.

[0038] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the technology described can be used for the systems and radio technologies mentioned above, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and NR terminology is used in most of the following description, but these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) systems. th Generation, 6G) communication system.

[0039] FIG1 is a block diagram of a wireless communication system applicable to an embodiment of the present application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device (Wearable Device), an aircraft (Flight Vehicle), a vehicle-mounted device (VUE), a ship-mounted device, a pedestrian user equipment (PUE), a smart home (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), a game console, a personal computer (PC), an ATM, or a self-service machine, or other terminal-side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit, etc. In addition to the above-mentioned terminal devices, it can also be a chip in the terminal, such as a modem chip or 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.

[0040] 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. Among them, the base station can be referred to as Node B (NB), Evolved Node B (eNB), the next generation Node B (gNB), New Radio Node B (NR Node B), access point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home evolved Node B (home evolved Node B), Transmission Reception Point (TRP) or other appropriate terms in the relevant field. As long as the same technical effect is achieved, the base station is not limited to specific technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

[0041] 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 (MME), access mobility management function (AMF), session management function (SMF), user plane function (UPF), policy control function (PCF), policy and charging rules function unit (PCRF), edge application service discovery function (EASDF), unified data management (UDM), unified data repository (UDR), home user server (HSS), centralized network configuration (CNC), network storage function (NRF), network exposure function (NEF), local NEF (L-NEF), binding support function (BSF), application function ( It should be noted that in the embodiments of the present application, only the core network device in the NR system is introduced as an example, and the specific type of the core network device is not limited.

[0042] The registration method, network information recording method, apparatus, terminal, and network-side equipment provided in the embodiments of the present application are described in detail below with reference to some embodiments and their application scenarios in conjunction with the accompanying drawings.

[0043] Please refer to Figure 2, which is a flowchart of a registration method provided in an embodiment of the present application. As shown in Figure 2, the following steps are included:

[0044] Step 201: When a terminal is in a registered state on a first network, the terminal initiates a registration request to a second network.

[0045] Wherein, when the second network registration is successful, the terminal is in a registered state in both the first network and the second network.

[0046] The first network and the second network may be two different types of networks, or the first network and the second network may be two networks of different systems.

[0047] In some embodiments, the first network and the second network may be two networks among 2G, 3G, 4G, 5G, 6G and 7G networks, for example: the first network is a 5G network, and the second network is a 4G network, for example: the first network is a 6G network, and the second network is a 4G network, for example: the first network is a 6G network, and the second network is a 5G network, for example: the first network is a 4G network, and the second network is a 5G network, for example: the first network is a 5G network, and the second network is a 6G network, etc.

[0048] The terminal initiating a registration request to the second network is the terminal initiating a registration request to a network-side device of the second network.

[0049] In some embodiments, the registration request may be a registration request in a 5G network (such as a registration message), or the registration request may be an attachment request in a 4G network (such as an attach message).

[0050] The above-mentioned terminal being in a registered state in both the first network and the second network can be understood as the terminal being in a registered state in the first network and the second network at the same time, which can be referred to as dual registration or multi registration.

[0051] In an embodiment of the present application, the above steps can be used to enable the terminal to be in a registered state in both the first network and the second network, so that the terminal can use the first network and the second network for communication (for example, data transmission, voice transmission, etc.) at the same time, or enable the terminal to quickly change from using the first network for communication to using the second network for communication, thereby improving the communication performance of the terminal. For example, it is possible to avoid affecting the communication performance of the terminal due to untimely network switching, thereby improving the communication performance of the terminal and enhancing the user experience. In some embodiments, the terminal can communicate in the first network and the second network at the same time, such as performing data transmission in the first network and the second network at the same time, or the terminal can flexibly select one of the networks in the first network and the second network for communication according to business requirements, scenario requirements or communication performance, so that communication can more easily meet business requirements or scenario requirements to improve the communication performance of the terminal.

[0052] In some implementations, when the terminal registers with the second network, the terminal may also initiate a registration request to a third network, such as to achieve three or more networks being in a registered state.

[0053] It should be noted that in the embodiments of the present application, the terminal being in a registered state on the first network can be understood as the terminal being in a registered state on the first network and being able to use the first network for communication (for example, data transmission, voice transmission, etc.). The terminal being in a registered state on the second network can be understood as the terminal being in a registered state on the second network and being able to use the second network for communication. The following is the same and will not be repeated here.

[0054] In some implementations, when the terminal is in a registered state on the first network, the terminal initiating a registration request to the second network includes:

[0055] If there is an interface between the core networks of the first network and the second network, the terminal initiates a registration request to the second network while the first network is in the registered state. For example, if the first network is a 5G network and the second network is a 4G network, and there is an N26 interface between the AMF of the 5G network and the MME of the 4G network, the terminal initiates a registration request to the second network while the first network is in the registered state.

[0056] In this way, the terminal can be registered in both networks with interfaces between the core networks, thereby improving the communication performance of the terminal.

[0057] As an optional implementation manner, when the terminal is in a registered state on the first network, the terminal initiating a registration request to the second network includes:

[0058] When the terminal is in a registered state in the first network and a first condition is met, the terminal initiates a registration request to the second network;

[0059] The first condition is associated with at least one of the following:

[0060] a communication status of the terminal in the first network;

[0061] a communication status of the terminal in the second network;

[0062] Application of the terminal;

[0063] The services of the terminal;

[0064] The battery level of the terminal.

[0065] The first condition may be a condition agreed upon in a protocol or configured on the network side, or a condition determined by the terminal itself.

[0066] The association between the above-mentioned first condition and the above-mentioned at least one item can be understood as the above-mentioned first condition being the condition corresponding to the above-mentioned at least one item, such as the condition based on the above-mentioned at least one item determining that the terminal needs to communicate in the second network (for example, data transmission or voice transmission), or the condition based on the above-mentioned at least one item determining that the terminal can communicate in the second network, or the condition based on the above-mentioned at least one item determining that the terminal can be in a registered state in both the first network and the second network at the same time, etc.

[0067] In the above implementation, since the terminal initiates a registration request to the second network when the first condition is met, the terminal can initiate a registration request to the second network in a timely manner to improve the communication performance of the terminal.

[0068] It should be noted that the embodiments of the present application are not limited to initiating a registration request to the second network when the above-mentioned first condition is met. For example, in some embodiments, the terminal may initiate a registration request to the second network when it believes that it needs or is able to initiate a registration request on the second network. For example, when the terminal moves to a specific location, it initiates a registration request to the second network, etc., which is not limited.

[0069] The communication status of the terminal in the first network may be related performance or indicators of the terminal in the first network. For example, the communication status of the terminal in the first network includes at least one of the following:

[0070] signal quality of the terminal in the first network;

[0071] a data rate of the terminal on the first network;

[0072] The amount of data to be sent by the terminal on the first network;

[0073] Data waiting time of the terminal in the first network;

[0074] Quality of Experience (QoE) corresponding to a first application on the terminal that uses the first network for data transmission.

[0075] The above-mentioned signal quality may include a parameter that can represent the signal quality, such as Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), or Signal to Noise Ratio (SNR).

[0076] The above data rate can be obtained through the Packet Data Convergence Protocol (PDCP) layer, or through the physical layer, or through the application layer.

[0077] The amount of data to be sent can be obtained through the queue length of the PDCP layer, or through the amount of data to be sent of the application layer.

[0078] The data waiting time may be obtained through the PDCP layer or the application layer.

[0079] The first application using the first network for data transmission may be any application in the terminal that uses the first network for data transmission.

[0080] Optionally, the first condition includes at least one of the following:

[0081] The signal quality of the terminal in the first network is less than or equal to a first threshold;

[0082] The data rate of the terminal on the first network is less than or equal to a second threshold;

[0083] The amount of data to be sent by the terminal on the first network is greater than or equal to a third threshold;

[0084] The data waiting time of the terminal on the first network is greater than or equal to a fourth threshold;

[0085] The QoE corresponding to the first application on the terminal that uses the first network for data transmission is less than or equal to a fifth threshold.

[0086] Among them, the above-mentioned first threshold, second threshold, third threshold, fourth threshold and fifth threshold can be agreed upon by the protocol or configured on the network side, or determined by the terminal itself.

[0087] In this implementation, when the communication quality of the first network is poor, a registration request can be initiated to the second network to improve the service transmission performance of the terminal.

[0088] The communication status of the terminal in the second network may be related performance or indicators of the terminal in the second network. For example, the communication status of the terminal in the second network includes signal quality of the terminal in the second network.

[0089] The terminal application may be a specific type of application (APP) or a specific application in the terminal. For example, the terminal application includes at least one of the following: a second application and a third application, wherein the second application includes a delay-sensitive application, and the third application includes an application that requires the second network for data transmission.

[0090] Among them, delay-sensitive applications can be applications that have high or strict requirements on the transmission delay of data packets, or applications that require low transmission delay, for example, applications that require the transmission delay of data packets to be less than or equal to 460ms, or applications including competitive gaming services or competitive gaming applications.

[0091] The above-mentioned application that needs to use the second network for data transmission can be an application that must use the second network for data transmission according to the operator's configuration / policy, or an application that must use the second network for data transmission according to the APP manufacturer's configuration / policy, or an application that must use the second network for data transmission according to the mobile phone manufacturer's configuration / policy.

[0092] The terminal service may be a specific service of the terminal, such as a real-time communication service. The real-time service may include at least one of the following:

[0093] Carrier-grade real-time communication services such as voice calls, video calls, augmented reality (AR) calls, and extended reality (XR) calls;

[0094] Alternatively, real-time services may include calls on an APP, such as calls on an instant messaging software.

[0095] The power level of the terminal may include the remaining power level of the terminal.

[0096] Optionally, the first condition includes at least one of the following:

[0097] The remaining power of the terminal is greater than or equal to a sixth threshold;

[0098] The terminal does not perform real-time communication services;

[0099] The terminal does not use the second application;

[0100] The terminal uses the third application;

[0101] The signal quality of the terminal in the second network is greater than or equal to a seventh threshold.

[0102] Among them, the above-mentioned sixth threshold and seventh threshold can be agreed upon by the protocol or configured on the network side, or determined by the terminal itself.

[0103] The above-mentioned terminal not performing a real-time communication service may mean that the terminal is not currently performing a real-time communication service, for example, the terminal is not in a call state.

[0104] The above-mentioned terminal not using the second application may mean that the terminal is currently not using the second application.

[0105] The terminal using the third application may be that the terminal activates the third application or the terminal has already activated the third application.

[0106] In this embodiment, since the remaining battery power of the terminal is greater than or equal to the sixth threshold, the terminal can be registered on both networks when the remaining battery power is sufficient, thereby ensuring the terminal's service performance. Since no real-time communication service is being performed or the terminal is not using the second application, this prevents the terminal's registration on both networks from impacting the real-time communication service or the second application, thereby improving the terminal's service performance. Since the terminal is using the third application, this can improve the service performance of the third application. Furthermore, the signal quality of the terminal on the second network being greater than or equal to the seventh threshold can improve the service performance of the terminal using the second network for data transmission when both networks are registered.

[0107] As an optional embodiment, the method further includes at least one of the following:

[0108] The terminal receives a message sent by a network-side device of the first network to instruct the terminal to measure the second network, wherein the terminal does not send a measurement report corresponding to the second network to the network-side device of the first network;

[0109] The terminal receives a message sent by a network-side device of the second network to instruct the terminal to measure the first network, wherein the terminal does not send a measurement report corresponding to the first network to the network-side device of the second network;

[0110] upon receiving a message sent by the network-side device of the first network for switching the terminal from the first network to the second network, the terminal maintains the connection with the network-side device of the first network; or upon receiving a message sent by the network-side device of the first network for switching the terminal from the first network to the second network, the terminal switches to the second network;

[0111] Upon receiving a message sent by the network-side device of the second network for switching the terminal from the second network to the first network, the terminal maintains the connection with the network-side device of the second network; or upon receiving a message sent by the network-side device of the second network for switching the terminal from the second network to the first network, the terminal switches to the first network;

[0112] The terminal changes an application that uses the first network for data transmission to an application that uses the second network for data transmission;

[0113] The terminal changes an application that uses the second network for data transmission to an application that uses the first network for data transmission.

[0114] The message for instructing the terminal to measure the second network may be a Radio Resource Control (RRC) reconfiguration message (RRCReconfiguration message) or an RRC resume message (RRCResume message). In addition, the message may carry measurement configuration information.

[0115] In the above implementation, it is possible for the terminal to receive a message sent by the network side device of the first network to instruct the terminal to measure the second network, and the terminal does not send a measurement report corresponding to the second network to the network side device of the first network. This can prevent the network side device of the first network from switching the terminal to the second network, causing the application that originally used the second network for data transmission to be unable to continue data transmission.

[0116] The message for instructing the terminal to measure the first network may be an RRCReconfiguration message or an RRCResume message, which carries measurement configuration information.

[0117] In the above implementation manner, it is possible for the terminal to receive a message sent by the network side device of the second network to instruct the terminal to measure the first network, and the terminal does not send a measurement report corresponding to the first network to the network side device of the second network. This can prevent the network side device of the second network from switching the terminal to the first network, causing the application that originally used the first network for data transmission to be unable to continue data transmission.

[0118] The terminal maintaining the connection with the network-side device of the first network may be maintaining the connection with the network-side device of the first network and not switching to the second network. For example, when a terminal is in a 5G network and receives a switching message sent by a 5G base station to switch the terminal to 4G, the terminal still maintains the connection with the 5G base station (for example, an RRC connection) and does not switch to the 4G base station.

[0119] In the above implementation, since the connection with the network-side device of the first network is maintained, the terminal can communicate on the first network and the second network, thereby improving the communication performance of the terminal.

[0120] In some implementations, the above-mentioned maintaining the connection with the network-side device of the first network or switching to the second network can be determined by the terminal according to its own needs or agreement, and is not limited to this.

[0121] The terminal maintaining the connection with the network-side device of the second network may be maintaining the connection with the network-side device of the second network without switching to the first network. For example, when a terminal is in a 4G network and receives a switching message from a 4G base station to switch the terminal to 5G, the terminal still maintains the connection with the 4G base station and does not switch to the 5G base station.

[0122] In the above implementation, since the connection with the network-side device of the second network is maintained, the terminal can communicate using the first network and the second network, thereby improving the communication performance of the terminal.

[0123] In the above implementation, since the terminal switches to the second network, the switching efficiency can be improved because the terminal is already in a registered state in the second network before switching to the second network.

[0124] In some implementations, the above-mentioned maintaining the connection with the network-side device of the second network or switching to the first network can be determined by the terminal according to its own needs or agreement, and is not limited to this.

[0125] The terminal changes the application that uses the first network for data transmission to the application that uses the second network for data transmission, which means that the application originally uses the first network for data transmission, and after the change, the application uses the second network for data transmission.

[0126] The terminal changes the application that uses the second network for data transmission to the application that uses the first network for data transmission, which means that the application originally uses the second network for data transmission, and after the change, the application uses the first network for data transmission.

[0127] In the above implementation, since the terminal switches to the first network, the switching efficiency can be improved because the terminal is already in a registered state in the first network before switching to the second network.

[0128] In the above implementation, since the network used by the application can be changed, the time of application communication interruption can be shortened, thereby improving the user experience.

[0129] Optionally, the terminal changing the application using the second network for data transmission to the application using the first network for data transmission includes at least one of the following:

[0130] When the connection between the terminal and the second network is disconnected, the terminal changes the application using the second network for data transmission to the application using the first network for data transmission;

[0131] Upon receiving a message sent by the network side device of the second network for switching the terminal from the second network to the first network, the terminal switches to the first network, and changes an application that uses the second network for data transmission to an application that uses the first network for data transmission;

[0132] When a second condition is met or the first condition is not met, the terminal changes the application using the second network for data transmission to the application using the first network for data transmission; wherein the second condition is associated with at least one of the following:

[0133] a communication status of the terminal in the first network;

[0134] Application of the terminal;

[0135] The services of the terminal;

[0136] The battery level of the terminal;

[0137] The status of the terminal in the first network;

[0138] The status of the terminal in the second network.

[0139] Among them, the above-mentioned second condition is a condition different from the first condition, and the above-mentioned second condition can be a condition agreed upon in the protocol or configured on the network side, or can be a condition automatically determined by the terminal.

[0140] The communication, application, service, or power associated with the second condition can refer to the corresponding description of the implementation of the first condition, and will not be repeated here. For example, the communication status of the terminal in the first network associated with the second condition includes at least one of the following:

[0141] signal quality of the terminal in the first network;

[0142] a data rate of the terminal on the first network;

[0143] The amount of data to be sent by the terminal on the first network;

[0144] Data waiting time of the terminal in the first network;

[0145] QoE corresponding to a first application on the terminal that uses the first network for data transmission.

[0146] Optionally, the second condition includes at least one of the following:

[0147] The signal quality of the terminal on the first network is greater than or equal to an eighth threshold;

[0148] The data rate of the terminal on the first network is greater than or equal to a ninth threshold;

[0149] The amount of data to be sent by the terminal on the first network is less than or equal to a tenth threshold;

[0150] The data waiting time of the terminal on the first network is less than or equal to an eleventh threshold;

[0151] The QoE corresponding to the first application on the terminal that uses the first network for data transmission is greater than or equal to a twelfth threshold.

[0152] The eighth, ninth, tenth, and twelfth thresholds may be determined by a protocol agreement, a network configuration, or the terminal itself. Furthermore, the eighth, ninth, tenth, and twelfth thresholds may be the same as or different from the first, second, third, fourth, and fifth thresholds in the above-described embodiment.

[0153] It should be noted that, upon determining that the connection with the second network is disconnected, the terminal may immediately change the application using the second network for data transmission to the application using the first network for data transmission, thereby shortening the duration of the application communication interruption.

[0154] It should be noted that, upon receiving a message that the terminal is switching from the second network to the first network, the terminal may immediately change the application that uses the second network for data transmission to the application that uses the first network for data transmission, thereby shortening the time of application communication interruption.

[0155] In this implementation, when the communication quality of the first network is good, the application using the second network for data transmission can be changed to use the first network for data transmission, thereby improving the service transmission performance of the terminal.

[0156] Optionally, the application of the terminal associated with the second condition includes: a second application, wherein the second application includes a delay-sensitive application.

[0157] Among them, the above-mentioned second application refers to the corresponding description of the implementation method of the above-mentioned first condition, which will not be repeated here.

[0158] Optionally, the service of the terminal associated with the second condition includes: real-time communication service.

[0159] The above-mentioned real-time communication service refers to the corresponding description of the implementation method of the above-mentioned first condition, which will not be repeated here.

[0160] Optionally, the state of the terminal in the first network includes: the terminal is in an idle state in the first network;

[0161] Or, the state of the terminal in the second network includes: the terminal is in an idle state in the second network.

[0162] The above-mentioned terminal being in an idle state in the first network may include the terminal entering an idle state in the first network or the terminal having entered an idle state in the first network.

[0163] The above-mentioned terminal being in an idle state in the second network may include the terminal entering an idle state in the second network or the terminal having entered an idle state in the second network.

[0164] Optionally, the power level of the terminal includes: the remaining power level of the terminal.

[0165] Optionally, the second condition includes at least one of the following:

[0166] The remaining power of the terminal is less than or equal to a thirteenth threshold;

[0167] The terminal performs real-time communication services;

[0168] The terminal uses the second application;

[0169] The terminal is in an idle state in the first network, and the terminal is about to enter an idle state in the second network; or, the terminal is in an idle state in the first network, and the terminal is in an idle state in the second network.

[0170] The thirteenth threshold may be determined by a protocol agreement or a network configuration, or may be determined by the terminal itself.

[0171] The above-mentioned terminal performing the real-time communication service may be that the terminal enables the real-time communication service or the terminal has started the real-time communication service.

[0172] The terminal using the second application may be that the terminal activates the second application or the terminal has already activated the second application.

[0173] The terminal is about to enter the idle state in the second network may be that the time length of no data transmission by the terminal in the second network is greater than or equal to a preset threshold.

[0174] In this embodiment, since the remaining power of the terminal is less than or equal to the thirteenth threshold, when the remaining power of the terminal is too low, the application that uses the second network for data transmission can be changed to the application that uses the first network for data transmission, thereby saving terminal power. Since a real-time communication service is being carried out or the terminal uses the second application, changing the application to use the first network for data transmission can improve the service performance of the terminal. Since the terminal is in an idle state on the first network and is about to enter an idle state on the second network, or since the terminal is in an idle state on the first network and the terminal is in an idle state on the second network, changing the application to use the first network for data transmission allows the terminal to only transmit data on one network, thereby saving terminal power consumption.

[0175] Optionally, when the second condition is met or the first condition is not met, the terminal changing the application that uses the second network for data transmission to the application that uses the first network for data transmission includes:

[0176] When the second condition is met or the first condition is not met, the terminal changes the application that uses the second network for data transmission to the application that uses the first network for data transmission, and the terminal is in an idle state on the second network.

[0177] In this implementation, since the application is changed to use the first network for data transmission and the terminal is in an idle state on the second network, power consumption of the terminal can be saved.

[0178] Optionally, when the terminal is in an idle state on the second network:

[0179] The terminal does not monitor messages of the second network; or

[0180] The terminal does not perform mobility location update in the second network; or

[0181] The terminal performs periodic location update in the second network.

[0182] Optionally, the message of the second network includes a system broadcast message, a paging message, etc. of the second network.

[0183] In this implementation, the messages of the second network are not monitored, and mobility location update is not performed in the second network. Only periodic location update is performed in the second network, which can save power consumption of the terminal.

[0184] Optionally, the terminal changing the application that uses the second network for data transmission to the application that uses the first network for data transmission includes:

[0185] The application in the terminal that uses the network address corresponding to the second network for data transmission is changed to the application that uses the network address corresponding to the first network for data transmission on the first network.

[0186] The network address corresponding to the first network may be a network address used by the terminal in the first network, such as an IP address used by the terminal in the first network. For example, the IP address used by the terminal in the 5G network is IP-1, and the IP address used by the terminal in the 4G network is IP-2. APP-1 of the terminal originally used IP-2 for data transmission in the 4G network. When the terminal determines that the second condition is met, APP-1 on the terminal uses IP-1 to send a message (e.g., a registration message) to the server corresponding to APP-1 (APP Server-1), so that APP Server-1 can use the IP-1 address to send data to the terminal.

[0187] In the above implementation, since the terminal changes all applications using the network address corresponding to the second network to use the network address of the first network for data transmission, this can ensure that the terminal will not receive data on the second network, so that the terminal can maintain an idle state for a long time on the second network, which can save power consumption of the terminal.

[0188] Optionally, the terminal changing an application that uses the first network for data transmission to an application that uses the second network for data transmission includes:

[0189] When the connection between the terminal and the first network is disconnected, the terminal changes the application using the first network for data transmission to the application using the second network for data transmission.

[0190] The disconnection between the terminal and the first network may be caused by signal quality or other reasons.

[0191] In this embodiment, when the terminal is disconnected from the first network, the application using the first network for data transmission is changed to use the second network for data transmission, thereby shortening the application data interruption time.

[0192] Optionally, upon receiving a message sent by a network-side device of the first network for switching the terminal from the first network to the second network, the terminal switching to the second network includes:

[0193] When the terminal is in a connected state on the first network and in a connected state on the second network, and receives a message sent by a network-side device of the first network for switching the terminal from the first network to the second network, the terminal switches to the second network, and changes an application that used the network address corresponding to the second network for data transmission before the switching to an application that uses the network address of the first network before the switching for data transmission.

[0194] The network address corresponding to the second network is the network address used by the terminal in the second network, and the network address corresponding to the first network is the network address used by the terminal in the first network.

[0195] In this embodiment, due to switching to the second network, the application that used the network address corresponding to the second network for data transmission before the switching is changed to the application using the network address of the first network before the switching for data transmission, thereby shortening the application data interruption time.

[0196] For example, a terminal uses IP-1 on a 5G network and IP-2 on a 4G network. App-1 on the terminal originally used IP-2 for data transmission on the 4G network. When the terminal receives a message from the 5G base station to switch the terminal to 4G, it switches to 4G. App-1 on the terminal uses IP-1 to send a message (such as a registration message) to App Server-1, the server corresponding to App-1, so that App Server-1 can use IP-1 to send data to the terminal. In this case, when the terminal switches from 5G to 4G, the original IP-2 on the terminal in the 4G network becomes unavailable, causing data interruption for App-1. App-1 on the terminal can shorten the data interruption by immediately using IP-1 to send a message to App Server-1.

[0197] It should be noted that the various implementation methods provided in the embodiments of the present application can be implemented in combination with each other or can be implemented separately, and there is no limitation on this.

[0198] In this embodiment of the present application, when a terminal is registered on a first network, the terminal initiates a registration request to a second network. If registration on the second network is successful, the terminal is registered on both the first and second networks. Because the terminal is registered on both the first and second networks, communication between the terminal and the first network can be performed, or communication on the second network can be performed quickly, thereby improving the terminal's communication performance.

[0199] Please refer to FIG3 , which is a flow chart of a network information recording method provided by the present application. As shown in FIG3 , the method includes the following steps:

[0200] Step 301: When a core network element has recorded information about a terminal in a first network, the core network element records information about the terminal in a second network.

[0201] The core network element is a network element in the core network used to record the network information of the terminal. For example, for 5G networks, it can be UDM, for 4G networks, it can be HSS, and for 6G or 7G networks, it can be the core network element of 6G or 7G used to record the network information of the terminal. The network element can also be a network element jointly provided by two networks, for example, a network element UDM+HSS jointly provided by 5G and 4G.

[0202] The above-mentioned information that the terminal is in the first network may mean that the above-mentioned core network element has recorded the information that the terminal is in the first network before step 301 is performed.

[0203] Among them, the information recorded that the terminal is in the first network indicates that the terminal has been registered in the first network and is in a registered state. For example, before step 301, the core network network element receives a registration request for the above-mentioned terminal sent by the AMF, and the registration request carries the terminal's Subscription Permanent Identifier (SUPI). The above-mentioned core network network element responds to the above-mentioned registration request to record the information of the terminal in the first network, which may include the address, identifier and other information of the above-mentioned AMF.

[0204] The recording of the terminal's information on the second network may be the core network element receiving a registration request corresponding to the terminal, and recording the terminal's information on the second network based on the registration request, thereby indicating that the terminal is registered with the second network and is in a registered state with the second network. For example, the second network is a 4G network, and the core network element receives a registration request (such as an attach request) sent by an MME. In response to the request, the core network element records the terminal's information on the second network. This information may include information such as the address and identifier of the MME.

[0205] The above-mentioned recording of the information of the terminal in the second network means recording the information of the terminal in the second network while retaining the information of the terminal in the first network, that is, not deleting the information of the terminal in the first network.

[0206] It should be noted that, in the embodiment of the present application, the information of the terminal in the first network and the information of the terminal in the second network are not limited. Specifically, it can be the information that the core network element needs to record for the terminal registration network as agreed in the protocol.

[0207] In this embodiment, recording may also be referred to as saving or storing.

[0208] In this embodiment, the above steps can enable the core network element to record the terminal information in the first network and the second network, so that the terminal is registered in both the first network and the second network, thereby improving the communication performance of the terminal.

[0209] Optionally, the recording the information of the terminal on the second network includes:

[0210] If the core network element determines that the terminal supports multi-network registration based on the subscription information corresponding to the terminal, record the information of the terminal on the second network; or

[0211] In a case where the core network element records that the terminal supports multi-network registration, information of the terminal in the second network is recorded.

[0212] Among them, the contract information corresponding to the above-mentioned terminal can be contract information determined based on the terminal identification.

[0213] Optionally, the terminal may also save the contract information.

[0214] Optionally, the core network element may send the changed subscription information to the terminal.

[0215] The above determination that the terminal supports multi-network registration based on the contract information corresponding to the terminal can be understood as the contract information indicating that the terminal supports multi-network registration.

[0216] The multi-network registration may be dual-network registration, referred to as dual registration, or the multi-network registration may be more network registrations, such as being registered in three networks at the same time.

[0217] The core network element recording that the terminal supports multi-network registration means that the core network element has recorded that the terminal supports multi-network registration before executing step 301, such as determining and recording that the terminal supports multi-network registration when recording the information of the terminal in the first network or before.

[0218] In this implementation, since the terminal's information on the second network is recorded when it is determined that the terminal supports multi-network registration, it is avoided that when the terminal does not support multi-network registration, the core network element records the terminal's information on two networks, resulting in incorrect network information recorded by the core network element.

[0219] Optionally, the method further includes:

[0220] The core network element records the latest network element information corresponding to the terminal.

[0221] The information of the latest network element corresponding to the terminal may be the core network element that has most recently provided services to the terminal, or may be the core network element that has most recently been updated corresponding to the terminal. For example, after executing step 301, the latest network element corresponding to the terminal is the network element in the second network that sends a registration-related request to the core network element.

[0222] The latest network element information may be the latest IP address information or Fully Qualified Domain Name (FQDN) information of the network element.

[0223] In this embodiment, the latest network element information may also be referred to as the most recent network element information or the last network element information.

[0224] In this implementation, since the information of the latest network element corresponding to the terminal is recorded, the core network element can know the latest network element corresponding to the terminal, thereby providing services to the terminal through the latest network element to improve the communication performance of the terminal.

[0225] Optionally, the method further includes:

[0226] In the case of receiving a request message sent by other network elements, the core network element returns the latest network element information corresponding to the terminal to the other network elements, where the request message is used to request information about the network element providing services for the terminal.

[0227] Among them, the above-mentioned other network elements may be other core network elements or access network elements.

[0228] In this implementation, the core network element can return the latest network element information corresponding to the terminal to the other network elements, so that the other network elements can provide services to the terminal through the latest network element, thereby improving the communication performance of the terminal.

[0229] Optionally, the method further includes at least one of the following:

[0230] Upon receiving a first registration-related request of the terminal sent by a first network element of the first network, the core network network element records information of the first network element and deletes information of a second network element, where the second network element is a network element in the first network that sent the registration-related request of the terminal to the core network network element before receiving the first registration-related request;

[0231] Upon receiving a second registration-related request for the terminal sent by a third network element of the second network, the core network network element records information of the third network element and deletes information of a fourth network element. The fourth network element is a network element in the second network that sends a registration-related request for the terminal to the core network network element before receiving the second registration-related request.

[0232] The above registration-related request is a request for the terminal to register with the network, such as a registration request or a location update request.

[0233] In this implementation, the network elements corresponding to the terminal in the first network and the second network can be updated in a timely manner, so that the updated network elements can be used to provide services to the terminal, thereby improving the communication performance of the terminal.

[0234] In some implementations, when deleting information about a second network element, the core network element sends a deregistration notification message to the second network element, causing the second network element to delete the context information of the terminal, thereby saving storage space and power consumption for the second network element. Alternatively, when deleting information about a fourth network element, the core network element sends a deregistration notification message to the fourth network element, causing the fourth network element to delete the context information of the terminal, thereby saving storage space and power consumption for the fourth network element.

[0235] For example: when the terminal moves and a new AMF sends a registration request to the core network element, the core network element records the information of the new AMF and deletes the information of the old AMF. The UDM sends a deregistration notification message (Nudm_UECM_DeregistrationNotification) to the old AMF so that the AMF can delete the context information of the terminal; when a new MME sends an update location request to the core network element, the core network element records the information of the new MME and deletes the information of the old MME. The core network element sends a cancel location message to the old MME so that the old MME can delete the terminal context.

[0236] It should be noted that this embodiment is an implementation method of the core network network element corresponding to the embodiment shown in Figure 2. Its specific implementation method can refer to the relevant description of the embodiment shown in Figure 2. In order to avoid repetition, this embodiment will not be repeated.

[0237] The following describes the method provided in the embodiments of the present application through multiple examples:

[0238] Example 1:

[0239] When the terminal is in a registered state on the first network, when it senses that the first condition is met, it initiates a registration request on the second network. After the registration is successful, the terminal is in a registered state on the first network and the second network at the same time;

[0240] The first condition includes at least one of the following:

[0241] The signal quality of the terminal in the first network is less than or equal to a first threshold;

[0242] The data rate of the terminal on the first network is less than or equal to a second threshold;

[0243] The amount of data to be sent by the terminal on the first network is greater than or equal to a third threshold;

[0244] The data waiting time of the terminal on the first network is greater than or equal to a fourth threshold;

[0245] The QoE of the first application on the terminal that uses the first network for data transmission is less than or equal to a fifth threshold;

[0246] The remaining battery power of the terminal is greater than or equal to a sixth threshold;

[0247] The terminal is not currently performing real-time communication services;

[0248] The terminal is not currently using a second application, and the second application is a delay-sensitive application;

[0249] The terminal starts a third application, and the third application needs to use the second network for data transmission.

[0250] The signal quality of the terminal in the second network is greater than or equal to the seventh threshold

[0251] The following description is based on an example in which the first network is 5G and the second network is 4G. The present invention can also be applied to a 6G+5G scenario or a 6G+4G scenario, as shown in FIG4 , and includes the following steps:

[0252] Step 1. The terminal initiates registration on the 5G network.

[0253] Step 2. The 5G network element AMF providing services to the terminal initiates a registration request to the UDM, carrying the terminal identifier, such as SUPI;

[0254] Step 3. When UDM determines the contract information of the terminal based on the terminal identifier, when it is determined that the terminal supports dual registration, it records that the terminal can perform dual registration. At the same time, UDM records the corresponding information of 5G, such as AMF address, etc.

[0255] Among them, this step can also be performed together with step 7, that is, when the UDM receives the message sent by the network element of the second network, it checks whether the terminal supports dual registration according to the terminal identifier;

[0256] In addition, dual registration can be understood as the terminal being registered on two networks at the same time.

[0257] Step 4.AMF obtains the terminal's contract information from UDM, such as obtaining the terminal's contract information through Nudm_SDM_Get.

[0258] Step 5.AMF sends a registration acceptance message to the terminal to complete the registration process in 5G

[0259] Step 6. When the terminal determines that the first condition is met, execute steps 7-12.

[0260] The first condition includes at least one of the following:

[0261] The signal quality of the terminal in 5G is less than or equal to a first threshold; wherein the signal quality includes RSRP or RSRQ;

[0262] The data rate of the terminal in 5G is less than or equal to the second threshold; wherein the data rate can be obtained through the PDCP layer, or through the physical layer, or through the application layer;

[0263] The amount of data to be sent by the terminal in 5G is greater than or equal to a third threshold; wherein the amount of data to be sent can be obtained by the queue length of the PDCP layer or the amount of data to be sent by the application layer;

[0264] The data waiting time of the terminal in 5G exceeds or is equal to a fourth threshold; wherein the data waiting time can be obtained through the PDCP layer or through the application layer;

[0265] The QoE of the first application using 5G for data transmission on the terminal is less than or equal to a fifth threshold;

[0266] The remaining battery power of the terminal is greater than or equal to a sixth threshold;

[0267] The terminal is not currently performing any real-time communication services. Real-time services include carrier-grade real-time communication services such as voice calls, video calls, AR calls, and XR calls. They may also include app-based calls, such as calls using instant messaging software.

[0268] The terminal is not currently using a second application, and the second application is a delay-sensitive application. Delay-sensitive applications may also be understood as services with high latency requirements or services with low latency requirements, such as services requiring a latency of less than or equal to 460 ms or competitive gaming services.

[0269] The terminal starts a third application, and the third application needs to use 4G for data transmission; for example, according to the operator's configuration / policy or the APP manufacturer's configuration / policy or the mobile phone manufacturer's configuration / policy, the third application must use 4G to transmit data

[0270] The 4G signal quality of the terminal is greater than or equal to a seventh threshold.

[0271] Step 7. The terminal sends an attach message on the 4G network.

[0272] Step 8. The 4G MME sends an update location request to the UDM.

[0273] Step 9. The UDM determines that the terminal can perform dual registration based on the record in step 3, or obtains the terminal's contract based on the terminal's identifier and determines that the terminal can perform dual registration. The UDM records the terminal's 4G corresponding information, including the MME address, etc., does not delete the recorded 5G related information, and does not send a deregistration message (Nudm_UECM_DeregistrationNotification) to the AMF;

[0274] The UDM also records the information of the most recently updated network element. For example, when receiving step 2, it records the information of the most recently updated network element, the AMF; when receiving step 8, it records the information of the most recently updated network element, the MME. This recorded information is used to respond to requests from other network elements to the UDM regarding information about the core network element providing services for the terminal. For example, in this embodiment, MME information is returned, such as its identification information, IP address, or Full Qualified Domain Name (FQDN).

[0275] Subsequently, when the terminal moves and a new AMF sends a registration request to UDM, UDM records the information of the new AMF, deletes the information of the old AMF, and sends a deregistration notification message (Nudm_UECM_DeregistrationNotification) to the old AMF so that AMF can delete the context information of the terminal; when a new MME sends an update location request to UDM, UDM records the information of the new MME, deletes the information of the old MME, and UDM sends a cancel location message to the old MME for the old MME to delete the terminal context.

[0276] Step 10. UDM sends an update location confirmation to MME.

[0277] Step 11. The MME initiates the default bearer establishment process.

[0278] Step 12. The MME sends a registration acceptance message to the terminal.

[0279] It should be noted that after step 12, the terminal is registered on both 5G and 4G, and can transmit data on both 5G and 4G. When the 5G network status is poor, the 4G network can be used to continue transmitting data for the user to improve the communication performance of the terminal.

[0280] Example 2:

[0281] The second embodiment may be a subsequent step of the first embodiment, and is specifically as follows:

[0282] After entering dual registration mode, the terminal's actions include at least one of the following:

[0283] The terminal only reports the measurement report of the first network to the base station of the first network, and does not report the measurement report of the second network; the reverse is also true, which is not described here; for example, when the terminal is in a 5G network and receives a message sent by the 5G base station for configuring the terminal to measure the 4G signal strength, the terminal does not report the strength of the 4G signal;

[0284] When the terminal receives a message (e.g., a handover command) sent by a base station of the first network for switching the terminal from the first network to the second network, the terminal maintains the connection with the base station of the first network; the reverse is also true, which is not described here; for example, when the terminal is in a 5G network and receives a handover message sent by a 5G base station for switching the terminal to 4G, the terminal still maintains the connection with the 5G base station and does not switch to the 4G base station

[0285] When the terminal is disconnected from the first network, the terminal will switch the application that uses the first network for data transmission to the second network for data transmission; the reverse is also true, which is not elaborated here; for example, due to signal quality reasons, when the terminal is disconnected from the 5G base station, the terminal will switch the application that originally used the 5G network to transmit data to the 4G network to continue transmitting data.

[0286] When the terminal meets the second condition, the terminal switches the application using the second network for data transmission to the first network for data transmission, and enters the idle state in the second network. The terminal does not monitor messages from the second network, does not perform mobility location updates in the second network, and only performs periodic location updates.

[0287] The second condition includes at least one of the following:

[0288] The signal quality of the terminal in the first network is greater than or equal to an eighth threshold;

[0289] The data rate of the terminal on the first network is greater than or equal to a ninth threshold;

[0290] The amount of data to be sent by the terminal on the first network is less than or equal to a tenth threshold;

[0291] The data waiting time of the terminal on the first network is less than or equal to an eleventh threshold;

[0292] The QoE of the first application on the terminal that uses the first network for data transmission is greater than or equal to a twelfth threshold;

[0293] The remaining battery power of the terminal is less than or equal to the thirteenth threshold;

[0294] The terminal enables real-time communication services;

[0295] The terminal activates a second application, where the second application is a delay-sensitive application;

[0296] The terminal enters the idle state in the first network and the terminal is about to enter the idle state in the second network, or the terminal enters the idle state in the first network and the terminal enters the idle state in the second network; wherein, the terminal is about to enter the idle state in the second network can be understood as the time when the terminal has no data transmission in the second network is greater than or equal to the threshold.

[0297] Here, the terminal meeting the second condition can also be understood as the terminal not meeting the first condition.

[0298] Among them, the terminal transfers the application that uses the second network for data transmission to the first network for data transmission, including: the application on the terminal uses the IP address of the first network to send a message (such as a registration message) to the server corresponding to the application, so that the service uses the new IP address to send data to the terminal.

[0299] For example, the IP address used by the terminal in the 5G network is IP-1, and the IP address used by the terminal in the 4G network is IP-2. The terminal's APP-1 originally used IP-2 for data transmission in the 4G network; when the terminal determines that the second condition is met, APP-1 on the terminal uses IP-1 to send a message (such as a registration message) to the server APP Server-1 corresponding to APP-1, so that APP Server-1 uses the IP-1 address to send data to the terminal.

[0300] The terminal's behavior after entering dual registration mode may also include:

[0301] When the terminal is in a connected state on both the first network and the second network, upon receiving a message (e.g., a switching command) sent by the first network to switch the terminal from the first network to the second network, the terminal switches to the second network and transfers the application originally using the first network for data transmission to the second network after the switch for data transmission;

[0302] For example, the IP address used by the terminal in the 5G network is IP-1, and the IP address used by the terminal in the 4G network is IP-2. The terminal's APP-1 originally used IP-2 for data transmission in the 4G network. When the terminal receives a message sent by the 5G base station to switch the terminal to 4G, the terminal switches to 4G, and APP-1 on the terminal uses IP-1 to send a message (such as a registration message) to the server APP Server-1 corresponding to APP-1, so that APP Server-1 can use the IP-1 address to send data to the terminal. In this case, IP continuity can be guaranteed during the switching process, so the terminal's original 5G IP-1 can continue to be used after the terminal switches to 4G. However, the terminal's original 4G IP-2 will be unavailable due to the switching process, so an IP address conversion process is required.

[0303] In the embodiment of the present application, the following can be achieved on the terminal side:

[0304] When the terminal is in a registered state on the first network, when it senses that the first condition is met, it initiates a registration request on the second network. After the registration is successful, the terminal is in a registered state on the first network and the second network at the same time;

[0305] The first condition includes at least one of the following:

[0306] The signal quality of the terminal in the first network is less than or equal to a first threshold;

[0307] The data rate of the terminal on the first network is less than or equal to a second threshold;

[0308] The amount of data to be sent by the terminal on the first network is greater than or equal to a third threshold;

[0309] The data waiting time of the terminal on the first network is greater than or equal to a fourth threshold;

[0310] The QoE of the first application on the terminal that uses the first network for data transmission is less than or equal to a fifth threshold;

[0311] The remaining battery power of the terminal is greater than or equal to a sixth threshold;

[0312] The terminal is not currently performing real-time communication services;

[0313] The terminal is not currently using a second application, and the second application is a delay-sensitive application;

[0314] The terminal starts a third application, and the third application needs to use the second network for data transmission.

[0315] After entering dual registration mode, the terminal's actions include at least one of the following:

[0316] The terminal only reports the measurement report of the first network to the base station of the first network, and does not report the measurement report of the second network; (the reverse is also true, which will not be repeated);

[0317] When the terminal receives a handover command from the base station of the first network for handing the terminal over to the second network, the terminal maintains the connection with the base station of the first network; (the reverse is also true and will not be repeated);

[0318] When the terminal is disconnected from the first network, the terminal switches the application using the first network for data transmission to the second network for data transmission; (the reverse is also true and will not be repeated);

[0319] When the terminal meets the second condition, the terminal switches the application using the first network for data transmission to the second network for data transmission, and enters the idle state in the second network, does not monitor the messages of the second network, does not perform mobility location update in the second network, and only performs periodic location update;

[0320] The second condition includes at least one of the following:

[0321] The signal quality of the terminal in the first network is greater than or equal to an eighth threshold;

[0322] The data rate of the terminal on the first network is greater than or equal to a ninth threshold;

[0323] The amount of data to be sent by the terminal on the first network is less than or equal to a tenth threshold;

[0324] The data waiting time of the terminal on the first network is less than or equal to an eleventh threshold;

[0325] The QoE of the first application on the terminal that uses the first network for data transmission is greater than or equal to a twelfth threshold;

[0326] The remaining battery power of the terminal is less than or equal to the thirteenth threshold;

[0327] The terminal enables real-time communication services;

[0328] The terminal activates a second application, where the second application is a delay-sensitive application;

[0329] The terminal enters the idle state in the first network and the terminal is about to enter the idle state in the second network, or the terminal enters the idle state in the first network and the terminal enters the idle state in the second network.

[0330] For the core network side, the following can be achieved:

[0331] The core network element determines that the terminal can perform dual registration based on the terminal contract, and then the core network element records the terminal information of the first network and the second network respectively.

[0332] The core network element records the information of the latest updated network element. When other network elements request the core network element for information of the core network element that provides services for the terminal, the information of the latest updated network element is obtained based on the recorded information.

[0333] Subsequently, when the terminal moves and a new AMF sends a registration request to the core network element, the core network element records the information of the new AMF and deletes the information of the old AMF; when a new MME sends an update location request to the core network element, the core network element records the information of the new MME and deletes the information of the old MME.

[0334] In the embodiment of the present application, the user experience of the application may be prevented from being affected due to untimely network switching.

[0335] The registration method provided in the embodiment of the present application can be executed by a registration device. In the embodiment of the present application, the registration method is executed by a registration device as an example to illustrate the registration device provided in the embodiment of the present application.

[0336] The network information recording method provided in the embodiment of the present application can be executed by a network information recording device. In the embodiment of the present application, the network information recording device provided in the embodiment of the present application is described by taking the network information recording device executing the network information recording method as an example.

[0337] Please refer to FIG5 , which is a structural diagram of a registration device provided in an embodiment of the present application. As shown in FIG5 , the registration device 500 includes:

[0338] The initiating module 501 is configured to initiate a registration request to the second network when the first network is in a registered state;

[0339] If the second network registration is successful, the terminal is in a registered state in both the first network and the second network.

[0340] Optionally, the initiating module 501 is configured to, when the terminal is in a registered state in the first network and a first condition is met, initiate a registration request from the terminal to the second network;

[0341] The first condition is associated with at least one of the following:

[0342] a communication status of the terminal in the first network;

[0343] a communication status of the terminal in the second network;

[0344] Application of the terminal;

[0345] The services of the terminal;

[0346] The battery level of the terminal.

[0347] Optionally, the communication status of the terminal in the first network includes at least one of the following:

[0348] signal quality of the terminal in the first network;

[0349] a data rate of the terminal on the first network;

[0350] The amount of data to be sent by the terminal on the first network;

[0351] Data waiting time of the terminal in the first network;

[0352] Quality of experience (QoE) corresponding to a first application on the terminal that uses the first network for data transmission.

[0353] Optionally, the first condition includes at least one of the following:

[0354] The signal quality of the terminal in the first network is less than or equal to a first threshold;

[0355] The data rate of the terminal on the first network is less than or equal to a second threshold;

[0356] The amount of data to be sent by the terminal on the first network is greater than or equal to a third threshold;

[0357] The data waiting time of the terminal on the first network is greater than or equal to a fourth threshold;

[0358] The QoE corresponding to the first application on the terminal that uses the first network for data transmission is less than or equal to a fifth threshold.

[0359] Optionally, the communication status of the terminal in the second network includes: signal quality of the terminal in the second network;

[0360] or,

[0361] The application of the terminal includes at least one of the following: a second application and a third application, wherein the second application includes a delay-sensitive application, and the third application includes an application that requires the use of the second network for data transmission;

[0362] or,

[0363] The services of the terminal include: real-time communication services;

[0364] or,

[0365] The power level of the terminal includes: the remaining power level of the terminal.

[0366] Optionally, the first condition includes at least one of the following:

[0367] The remaining power of the terminal is greater than or equal to a sixth threshold;

[0368] The terminal does not perform real-time communication services;

[0369] The terminal does not use the second application;

[0370] The terminal uses the third application;

[0371] The signal quality of the terminal in the second network is greater than or equal to a seventh threshold.

[0372] Optionally, the device further includes at least one of the following:

[0373] a first receiving module, configured to receive a message sent by a network-side device of the first network to instruct the terminal to perform measurement on the second network, wherein the terminal does not send a measurement report corresponding to the second network to the network-side device of the first network;

[0374] a second receiving module, configured to receive a message sent by a network-side device of the second network to instruct the terminal to perform measurements on the first network, wherein the terminal does not send a measurement report corresponding to the first network to the network-side device of the second network;

[0375] a first responding module, configured to maintain a connection with the network-side device of the first network upon receiving a message sent by the network-side device of the first network for switching the terminal from the first network to the second network; or, upon receiving a message sent by the network-side device of the first network for switching the terminal from the first network to the second network, switch to the second network;

[0376] a second responding module, configured to maintain a connection with the network-side device of the second network upon receiving a message sent by the network-side device of the second network for switching the terminal from the second network to the first network; or, upon receiving a message sent by the network-side device of the second network for switching the terminal from the second network to the first network, switch to the first network;

[0377] a first changing module, configured to change an application that uses the first network for data transmission to an application that uses the second network for data transmission;

[0378] The second changing module is configured to change, by the terminal, an application that uses the second network for data transmission so that the application uses the first network for data transmission.

[0379] Optionally, changing the application that uses the second network for data transmission to the application that uses the first network for data transmission includes at least one of the following:

[0380] When the connection between the terminal and the second network is disconnected, changing the application using the second network for data transmission to the application using the first network for data transmission;

[0381] Upon receiving a message sent by the network side device of the second network for switching the terminal from the second network to the first network, the terminal switches to the first network and changes an application that uses the second network for data transmission to an application that uses the first network for data transmission;

[0382] If the second condition is met or the first condition is not met, changing the application using the second network for data transmission to the application using the first network for data transmission;

[0383] The second condition is associated with at least one of the following:

[0384] a communication status of the terminal in the first network;

[0385] Application of the terminal;

[0386] The services of the terminal;

[0387] The battery level of the terminal;

[0388] The status of the terminal in the first network;

[0389] The status of the terminal in the second network.

[0390] Optionally, the communication status of the terminal in the first network associated with the second condition includes at least one of the following:

[0391] signal quality of the terminal in the first network;

[0392] a data rate of the terminal on the first network;

[0393] The amount of data to be sent by the terminal on the first network;

[0394] Data waiting time of the terminal in the first network;

[0395] QoE corresponding to a first application on the terminal that uses the first network for data transmission.

[0396] Optionally, the second condition includes at least one of the following:

[0397] The signal quality of the terminal on the first network is greater than or equal to an eighth threshold;

[0398] The data rate of the terminal on the first network is greater than or equal to a ninth threshold;

[0399] The amount of data to be sent by the terminal on the first network is less than or equal to a tenth threshold;

[0400] The data waiting time of the terminal on the first network is less than or equal to an eleventh threshold;

[0401] The QoE corresponding to the first application on the terminal that uses the first network for data transmission is greater than or equal to a twelfth threshold.

[0402] Optionally, the application of the terminal associated with the second condition includes: a second application, wherein the second application includes a delay-sensitive application;

[0403] or,

[0404] The services of the terminal associated with the second condition include: real-time communication services;

[0405] or,

[0406] The state of the terminal in the first network includes: the terminal is in an idle state in the first network;

[0407] or,

[0408] The state of the terminal in the second network includes: the terminal is in an idle state in the second network;

[0409] or,

[0410] The power level of the terminal includes the remaining power level of the terminal.

[0411] Optionally, the second condition includes at least one of the following:

[0412] The remaining power of the terminal is less than or equal to a thirteenth threshold;

[0413] The terminal performs real-time communication services;

[0414] The terminal uses the second application;

[0415] The terminal is in an idle state in the first network, and the terminal is about to enter an idle state in the second network; or, the terminal is in an idle state in the first network, and the terminal is in an idle state in the second network.

[0416] Optionally, when the second condition is met or the first condition is not met, changing the application that uses the second network for data transmission to the application that uses the first network for data transmission includes:

[0417] When the second condition is met or the first condition is not met, the application using the second network for data transmission is changed to the application using the first network for data transmission, and the terminal is in an idle state on the second network.

[0418] Optionally, when the terminal is in an idle state on the second network:

[0419] The terminal does not monitor messages of the second network; or

[0420] The terminal does not perform mobility location update in the second network; or,

[0421] The terminal performs periodic location update in the second network.

[0422] Optionally, changing the application that uses the second network for data transmission to the application that uses the first network for data transmission includes:

[0423] An application in the terminal uses the network address corresponding to the second network for data transmission, and uses the network address corresponding to the first network for data transmission on the first network.

[0424] Optionally, changing the application that uses the first network for data transmission to the application that uses the second network for data transmission includes:

[0425] When the terminal is disconnected from the first network, the application using the first network for data transmission is changed to the application using the second network for data transmission.

[0426] Optionally, upon receiving a message sent by a network-side device of the first network for switching the terminal from the first network to the second network, switching to the second network includes:

[0427] When the terminal is in a connected state on the first network and in a connected state on the second network, and receives a message sent by a network-side device of the first network for switching the terminal from the first network to the second network, the terminal switches to the second network, and changes an application that used the network address corresponding to the second network for data transmission before the switching to an application that uses the network address of the first network for data transmission before the switching.

[0428] The above registration device can improve the terminal communication performance.

[0429] In the embodiments of the present application, the registration device may be an electronic device, such as an electronic device with an operating system, or a component in the electronic device, such as an integrated circuit or chip. For example, the electronic device may be a terminal, or may be a device other than a terminal. For example, the terminal may include but is not limited to the types of terminals listed in the embodiments of the present application, and the other devices may be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0430] The registration device provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in Figure 2 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0431] Please refer to FIG6 , which is a structural diagram of a network information recording device provided in an embodiment of the present application. As shown in FIG6 , the network information recording device 600 includes:

[0432] The first recording module 601 is configured to record the information of the terminal in the second network when the information of the terminal in the first network is recorded.

[0433] Optionally, the recording the information of the terminal on the second network includes:

[0434] If the core network element determines that the terminal supports multi-network registration based on the subscription information corresponding to the terminal, record the information of the terminal on the second network; or

[0435] In a case where the core network element records that the terminal supports multi-network registration, information of the terminal in the second network is recorded.

[0436] Optionally, the device further includes:

[0437] The second recording module is used to record the latest network element information corresponding to the terminal.

[0438] Optionally, the device further includes:

[0439] The return module is used to return the latest network element information corresponding to the terminal to the other network element when receiving a request message sent by the other network element, wherein the request message is used to request information of the network element providing service to the terminal.

[0440] Optionally, the device further includes at least one of the following:

[0441] a first updating module, configured to, upon receiving a first registration-related request of the terminal sent by a first network element of the first network, cause the core network network element to record information of the first network element and delete information of a second network element, where the second network element is a network element in the first network that sent the registration-related request of the terminal to the core network network element before receiving the first registration-related request;

[0442] The second update module is used to, when receiving the second registration-related request of the terminal sent by the third network element of the second network, cause the core network network element to record the information of the third network element and delete the information of the fourth network element. The fourth network element is the network element in the second network that sends the registration-related request of the terminal to the core network network element before receiving the second registration-related request.

[0443] The network information recording device can improve terminal communication performance.

[0444] The network information recording device in the embodiment of the present application can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal or a network-side device.

[0445] The network information recording device provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in Figure 3 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0446] As shown in Figure 7, an embodiment of the present application further provides a communication device 700, including a processor 701 and a memory 702. The memory 702 stores a program or instruction that can be run on the processor 701. For example, when the communication device 700 is a terminal, the program or instruction is executed by the processor 701 to implement the various steps of the above-mentioned registration method embodiment and can achieve the same technical effect. When the communication device 700 is a core network network element, the program or instruction is executed by the processor 701 to implement the various steps of the above-mentioned network information recording method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0447] The present application also provides a terminal comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps of the registration method embodiment shown in FIG2 . This terminal embodiment corresponds to the aforementioned terminal-side method embodiment, and each implementation process and implementation method of the aforementioned method embodiment is applicable to this terminal embodiment and can achieve the same technical effects. Specifically, FIG8 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of the present application.

[0448] The terminal 800 includes but is not limited to: a radio frequency unit 801, a network module 802, an audio output unit 803, an input unit 804, a sensor 805, a display unit 806, a user input unit 807, an interface unit 808, a memory 809 and at least some of the components of the processor 810.

[0449] Those skilled in the art will appreciate that the terminal 800 may also include a power supply (such as a battery) to power various components. The power supply may be logically connected to the processor 810 via a power management system, thereby enabling the power management system to manage charging, discharging, and power consumption. The terminal structure shown in FIG8 does not limit the terminal. The terminal may include more or fewer components than shown, or may combine certain components, or have different component arrangements, which will not be described in detail here.

[0450] It should be understood that in an embodiment of the present application, the input unit 804 may include a graphics processing unit (GPU) 8041 and a microphone 8042, and the graphics processor 8041 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 806 may include a display panel 8061, and the display panel 8061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 807 includes a touch panel 8071 and at least one of other input devices 8072. The touch panel 8071 is also called a touch screen. The touch panel 8071 may include two parts: a touch detection device and a touch controller. Other input devices 8072 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.

[0451] In the embodiment of the present application, after receiving downlink data from a network-side device, the radio frequency unit 801 may transmit the data to the processor 810 for processing. Furthermore, the radio frequency unit 801 may send uplink data to the network-side device. Typically, the radio frequency unit 801 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0452] The memory 809 can be used to store software programs or instructions and various data. The memory 809 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, applications or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 809 may include a volatile memory or a non-volatile memory. 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 random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DRRAM). The memory 809 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0453] Processor 810 may include one or more processing units. Optionally, processor 810 integrates an application processor and a modem processor. The application processor primarily handles operations related to the operating system, user interface, and application programs, while the modem processor primarily processes wireless communication signals, such as a baseband processor. It is understood that the modem processor may not be integrated into processor 810.

[0454] The radio frequency unit 801 is configured to initiate a registration request to the second network when the first network is in a registered state;

[0455] Wherein, when the second network registration is successful, the terminal is in a registered state in both the first network and the second network.

[0456] Optionally, when the terminal is in a registered state on the first network, initiating a registration request to the second network includes:

[0457] When the terminal is in a registered state on the first network and meets the first condition, initiating a registration request to the second network;

[0458] The first condition is associated with at least one of the following:

[0459] a communication status of the terminal in the first network;

[0460] a communication status of the terminal in the second network;

[0461] Application of the terminal;

[0462] The services of the terminal;

[0463] The battery level of the terminal.

[0464] Optionally, the communication status of the terminal in the first network includes at least one of the following:

[0465] signal quality of the terminal in the first network;

[0466] a data rate of the terminal on the first network;

[0467] The amount of data to be sent by the terminal on the first network;

[0468] Data waiting time of the terminal in the first network;

[0469] Quality of experience (QoE) corresponding to a first application on the terminal that uses the first network for data transmission.

[0470] Optionally, the first condition includes at least one of the following:

[0471] The signal quality of the terminal in the first network is less than or equal to a first threshold;

[0472] The data rate of the terminal on the first network is less than or equal to a second threshold;

[0473] The amount of data to be sent by the terminal on the first network is greater than or equal to a third threshold;

[0474] The data waiting time of the terminal on the first network is greater than or equal to a fourth threshold;

[0475] The QoE corresponding to the first application on the terminal that uses the first network for data transmission is less than or equal to a fifth threshold.

[0476] Optionally, the communication status of the terminal in the second network includes: signal quality of the terminal in the second network;

[0477] or,

[0478] The application of the terminal includes at least one of the following: a second application and a third application, wherein the second application includes a delay-sensitive application, and the third application includes an application that requires the use of the second network for data transmission;

[0479] or,

[0480] The services of the terminal include: real-time communication services;

[0481] or,

[0482] The power level of the terminal includes: the remaining power level of the terminal.

[0483] Optionally, the first condition includes at least one of the following:

[0484] The remaining power of the terminal is greater than or equal to a sixth threshold;

[0485] The terminal does not perform real-time communication services;

[0486] The terminal does not use the second application;

[0487] The terminal uses the third application;

[0488] The signal quality of the terminal in the second network is greater than or equal to a seventh threshold.

[0489] Optionally, the radio frequency unit 801 is further configured to perform at least one of the following:

[0490] receiving a message sent by a network-side device of the first network to instruct the terminal to perform measurements on the second network, wherein the terminal does not send a measurement report corresponding to the second network to the network-side device of the first network;

[0491] receiving a message sent by a network-side device of the second network to instruct the terminal to perform measurements on the first network, wherein the terminal does not send a measurement report corresponding to the first network to the network-side device of the second network;

[0492] upon receiving a message from the network-side device of the first network for switching the terminal from the first network to the second network, maintaining the connection with the network-side device of the first network; or upon receiving a message from the network-side device of the first network for switching the terminal from the first network to the second network, switching to the second network;

[0493] upon receiving a message from the network side device of the second network for switching the terminal from the second network to the first network, maintaining the connection with the network side device of the second network; or upon receiving a message from the network side device of the second network for switching the terminal from the second network to the first network, switching to the first network;

[0494] Changing an application that uses the first network for data transmission to use the second network for data transmission;

[0495] An application that uses the second network for data transmission is changed to an application that uses the first network for data transmission.

[0496] Optionally, changing the application that uses the second network for data transmission to the application that uses the first network for data transmission includes at least one of the following:

[0497] When the connection between the terminal and the second network is disconnected, changing the application using the second network for data transmission to the application using the first network for data transmission;

[0498] Upon receiving a message sent by the network side device of the second network for switching the terminal from the second network to the first network, the terminal switches to the first network and changes an application that uses the second network for data transmission to an application that uses the first network for data transmission;

[0499] If the second condition is met or the first condition is not met, changing the application using the second network for data transmission to the application using the first network for data transmission;

[0500] The second condition is associated with at least one of the following:

[0501] a communication status of the terminal in the first network;

[0502] Application of the terminal;

[0503] The services of the terminal;

[0504] The battery level of the terminal;

[0505] The status of the terminal in the first network;

[0506] The status of the terminal in the second network.

[0507] Optionally, the communication status of the terminal in the first network associated with the second condition includes at least one of the following:

[0508] signal quality of the terminal in the first network;

[0509] a data rate of the terminal on the first network;

[0510] The amount of data to be sent by the terminal on the first network;

[0511] Data waiting time of the terminal in the first network;

[0512] QoE corresponding to a first application on the terminal that uses the first network for data transmission.

[0513] Optionally, the second condition includes at least one of the following:

[0514] The signal quality of the terminal on the first network is greater than or equal to an eighth threshold;

[0515] The data rate of the terminal on the first network is greater than or equal to a ninth threshold;

[0516] The amount of data to be sent by the terminal on the first network is less than or equal to a tenth threshold;

[0517] The data waiting time of the terminal on the first network is less than or equal to an eleventh threshold;

[0518] The QoE corresponding to the first application on the terminal that uses the first network for data transmission is greater than or equal to a twelfth threshold.

[0519] Optionally, the application of the terminal associated with the second condition includes: a second application, wherein the second application includes a delay-sensitive application;

[0520] or,

[0521] The services of the terminal associated with the second condition include: real-time communication services;

[0522] or,

[0523] The state of the terminal in the first network includes: the terminal is in an idle state in the first network;

[0524] or,

[0525] The state of the terminal in the second network includes: the terminal is in an idle state in the second network;

[0526] or,

[0527] The power level of the terminal includes the remaining power level of the terminal.

[0528] Optionally, the second condition includes at least one of the following:

[0529] The remaining power of the terminal is less than or equal to a thirteenth threshold;

[0530] The terminal performs real-time communication services;

[0531] The terminal uses the second application;

[0532] The terminal is in an idle state in the first network, and the terminal is about to enter an idle state in the second network; or, the terminal is in an idle state in the first network, and the terminal is in an idle state in the second network.

[0533] Optionally, when the second condition is met or the first condition is not met, changing the application that uses the second network for data transmission to the application that uses the first network for data transmission includes:

[0534] When the second condition is met or the first condition is not met, the application using the second network for data transmission is changed to the application using the first network for data transmission, and the terminal is in an idle state on the second network.

[0535] Optionally, when the terminal is in an idle state on the second network:

[0536] The terminal does not monitor messages of the second network; or

[0537] The terminal does not perform mobility location update in the second network; or,

[0538] The terminal performs periodic location update in the second network.

[0539] Optionally, changing the application that uses the second network for data transmission to the application that uses the first network for data transmission includes:

[0540] An application in the terminal uses the network address corresponding to the second network for data transmission, and uses the network address corresponding to the first network for data transmission on the first network.

[0541] Optionally, changing the application that uses the first network for data transmission to the application that uses the second network for data transmission includes:

[0542] When the terminal is disconnected from the first network, the application using the first network for data transmission is changed to the application using the second network for data transmission.

[0543] Optionally, upon receiving a message sent by a network-side device of the first network for switching the terminal from the first network to the second network, switching to the second network includes:

[0544] When the terminal is in a connected state on the first network and in a connected state on the second network, and receives a message sent by a network-side device of the first network for switching the terminal from the first network to the second network, the terminal switches to the second network, and changes an application that used the network address corresponding to the second network for data transmission before the switching to an application that uses the network address of the first network for data transmission before the switching.

[0545] The above terminal can improve terminal communication performance.

[0546] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the above-mentioned registration method embodiment and achieve the same or corresponding technical effects. To avoid repetition, it will not be described here.

[0547] The present application also provides a network-side device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps of the network information recording method embodiment shown in FIG3 . This network-side device embodiment corresponds to the aforementioned core network element method embodiment, and each implementation process and implementation method of the aforementioned method embodiment is applicable to this network-side device embodiment and can achieve the same technical effects.

[0548] Specifically, an embodiment of the present application further provides a network-side device. As shown in FIG9 , the network-side device 900 includes a processor 901, a network interface 902, and a memory 903. The network interface 902 is, for example, a common public radio interface (CPRI).

[0549] Specifically, the network side device 900 of an embodiment of the present invention also includes: instructions or programs stored in the memory 903 and executable on the processor 901. The processor 901 calls the instructions or programs in the memory 903 to execute the methods executed by the modules shown in FIG6 and achieve the same technical effect. To avoid repetition, they will not be elaborated here.

[0550] In the case where the processor 901 records the information of the terminal in the first network, the processor 901 records the information of the terminal in the second network.

[0551] Optionally, the recording the information of the terminal on the second network includes:

[0552] If the core network element determines that the terminal supports multi-network registration based on the subscription information corresponding to the terminal, record the information of the terminal on the second network; or

[0553] In a case where the core network element records that the terminal supports multi-network registration, information of the terminal in the second network is recorded.

[0554] Optionally, the processor 901 is further configured to:

[0555] Record the latest network element information corresponding to the terminal.

[0556] Optionally, the network interface 902 is used to:

[0557] When a request message sent by another network element is received, the latest network element information corresponding to the terminal is returned to the other network element, where the request message is used to request information about the network element providing service for the terminal.

[0558] Optionally, the processor 901 is further configured to perform at least one of the following:

[0559] Upon receiving a first registration-related request for the terminal sent by a first network element of the first network, recording information of the first network element and deleting information of a second network element, where the second network element is a network element in the first network that sent the registration-related request for the terminal to the core network network element before receiving the first registration-related request;

[0560] Upon receiving a second registration-related request for the terminal sent by a third network element of the second network, record information of the third network element and delete information of the fourth network element, where the fourth network element is a network element in the second network that sends a registration-related request for the terminal to the core network network element before receiving the second registration-related request.

[0561] The above network-side devices can improve terminal communication performance.

[0562] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the above-mentioned method embodiment and achieve the same or corresponding technical effects. To avoid repetition, it will not be repeated here.

[0563] 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, each process of the above-mentioned registration method or network information recording method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0564] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0565] 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 registration method or network information recording method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0566] 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.

[0567] An embodiment of the present application further provides a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the various processes of the above-mentioned registration method or network information recording method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0568] An embodiment of the present application further provides a wireless communication system, including: a terminal and a network side device, wherein the terminal can be used to execute the steps of the registration method provided in the embodiment of the present application, and the network side device can be used to execute the steps of the network information recording method provided in the embodiment of the present application.

[0569] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0570] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general-purpose hardware platform, or of course, by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes a number of instructions for enabling a terminal or network-side device to execute the methods described in each embodiment of the present application.

[0571] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of this application and the scope of protection of the claims. These implementation methods are all within the protection of this application.

Claims

1. A registration method, comprising: When the terminal is in a registered state on the first network, the terminal initiates a registration request to the second network; Wherein, when the second network registration is successful, the terminal is in a registered state in both the first network and the second network.

2. The method of claim 1, wherein: When the terminal is in a registered state on the first network, the terminal initiates a registration request to the second network, including: When the terminal is in a registered state in the first network and the first condition is met, the terminal initiates a registration request to the second network; The first condition is associated with at least one of the following: a communication status of the terminal in the first network; a communication status of the terminal in the second network; Application of the terminal; The business of the terminal; The power level of the terminal.

3. The method of claim 2, wherein: The communication status of the terminal in the first network includes at least one of the following: signal quality of the terminal in the first network; The data rate of the terminal in the first network; The amount of data to be sent by the terminal on the first network; Data waiting time of the terminal in the first network; The quality of experience (QoE) corresponding to a first application on the terminal that uses the first network for data transmission.

4. The method of claim 3, wherein: The first condition includes at least one of the following: The signal quality of the terminal in the first network is less than or equal to a first threshold; The data rate of the terminal in the first network is less than or equal to a second threshold; The amount of data to be sent by the terminal on the first network is greater than or equal to a third threshold; The data waiting time of the terminal in the first network is greater than or equal to a fourth threshold; The QoE corresponding to the first application on the terminal that uses the first network for data transmission is less than or equal to a fifth threshold.

5. The method according to any one of claims 2 to 4, wherein: The communication status of the terminal in the second network includes: the signal quality of the terminal in the second network; or, The application of the terminal includes at least one of the following: a second application and a third application, wherein the second application includes a delay-sensitive application, and the third application includes an application that needs to use the second network for data transmission; or, The services of the terminal include: real-time communication services; or, The power of the terminal includes: the remaining power of the terminal.

6. The method of claim 5, wherein: The first condition includes at least one of the following: The remaining power of the terminal is greater than or equal to a sixth threshold; The terminal does not perform real-time communication services; The terminal does not use the second application; The terminal uses the third application; A signal quality of the terminal in the second network is greater than or equal to a seventh threshold.

7. The method according to any one of claims 1 to 6, wherein: The method further comprises at least one of the following: The terminal receives a message sent by a network side device of the first network to instruct the terminal to measure the second network, wherein the terminal does not send a measurement report corresponding to the second network to the network side device of the first network; The terminal receives a message sent by a network side device of the second network to instruct the terminal to measure the first network, wherein the terminal does not send a measurement report corresponding to the first network to the network side device of the second network; Upon receiving a message sent by the network side device of the first network for switching the terminal from the first network to the second network, the terminal maintains the connection with the network side device of the first network; or upon receiving a message sent by the network side device of the first network for switching the terminal from the first network to the second network, the terminal switches to the second network; Upon receiving a message sent by the network side device of the second network for switching the terminal from the second network to the first network, the terminal maintains the connection with the network side device of the second network; or upon receiving a message sent by the network side device of the second network for switching the terminal from the second network to the first network, the terminal switches to the first network; The terminal changes the application using the first network for data transmission to the application using the second network for data transmission; The terminal changes an application that uses the second network for data transmission to an application that uses the first network for data transmission.

8. The method of claim 7, wherein: The terminal changes the application using the second network for data transmission to the application using the first network for data transmission, including at least one of the following: When the connection between the terminal and the second network is disconnected, the terminal changes the application using the second network for data transmission to the application using the first network for data transmission; When receiving a message sent by the network side device of the second network for switching the terminal from the second network to the first network, the terminal switches to the first network, and the terminal changes an application that uses the second network for data transmission to an application that uses the first network for data transmission; When the second condition is met or the first condition is not met, the terminal changes the application using the second network for data transmission to the application using the first network for data transmission; The second condition is associated with at least one of the following: a communication status of the terminal in the first network; Application of the terminal; The business of the terminal; The power level of the terminal; The state of the terminal in the first network; The status of the terminal in the second network.

9. The method of claim 8, wherein: The communication status of the terminal in the first network associated with the second condition includes at least one of the following: signal quality of the terminal in the first network; The data rate of the terminal in the first network; The amount of data to be sent by the terminal on the first network; Data waiting time of the terminal in the first network; QoE corresponding to a first application on the terminal that uses the first network for data transmission.

10. The method of claim 9, wherein: The second condition includes at least one of the following: The signal quality of the terminal in the first network is greater than or equal to an eighth threshold; The data rate of the terminal in the first network is greater than or equal to a ninth threshold; The amount of data to be sent by the terminal on the first network is less than or equal to a tenth threshold; The data waiting time of the terminal in the first network is less than or equal to an eleventh threshold; The QoE corresponding to the first application on the terminal that uses the first network for data transmission is greater than or equal to a twelfth threshold.

11. The method according to any one of claims 8 to 10, wherein: The application of the terminal associated with the second condition includes: a second application, wherein the second application includes a delay-sensitive application; or, The services of the terminal associated with the second condition include: real-time communication services; or, The state of the terminal in the first network includes: the terminal is in an idle state in the first network; or, The state of the terminal in the second network includes: the terminal is in an idle state in the second network; or, The power of the terminal includes: the remaining power of the terminal.

12. The method of claim 11, wherein: The second condition includes at least one of the following: The remaining power of the terminal is less than or equal to a thirteenth threshold; The terminal performs real-time communication services; The terminal uses the second application; The terminal is in an idle state in the first network, and the terminal is about to enter an idle state in the second network; Alternatively, the terminal is in an idle state in the first network, and the terminal is in an idle state in the second network.

13. The method according to any one of claims 8 to 12, wherein: When the second condition is met or the first condition is not met, the terminal changes the application using the second network for data transmission to the application using the first network for data transmission, including: When the second condition is met or the first condition is not met, the terminal changes the application that uses the second network for data transmission to the application that uses the first network for data transmission, and the terminal is in an idle state on the second network.

14. The method of claim 13, wherein: When the terminal is in an idle state in the second network: The terminal does not monitor messages of the second network; or, The terminal does not perform mobility location update in the second network; or, The terminal performs periodic location update in the second network.

15. The method according to any one of claims 7 to 14, wherein: The terminal changes the application using the second network for data transmission to the application using the first network for data transmission, including: An application in the terminal uses the network address corresponding to the second network to perform data transmission, and uses the network address corresponding to the first network to perform data transmission on the first network.

16. The method according to any one of claims 7 to 15, wherein: The terminal changes the application using the first network for data transmission to the application using the second network for data transmission, including: When the terminal is disconnected from the first network, the terminal changes an application using the first network for data transmission to an application using the second network for data transmission.

17. The method according to any one of claims 7 to 16, wherein: The terminal switching to the second network in a case where a message for switching the terminal from the first network to the second network is received from the network side device of the first network, comprises: When the terminal is in a connected state with the first network and in a connected state with the second network, and receives a message sent by a network side device of the first network for switching the terminal from the first network to the second network, the terminal switches to the second network, and changes an application that used the network address corresponding to the second network for data transmission before the switching to an application that uses the network address of the first network before the switching for data transmission.

18. A network information recording method, comprising: The core network element records the information of the terminal in the second network when the information of the terminal in the first network is recorded.

19. The method of claim 18, wherein: The recording of the information of the terminal in the second network includes: When the core network element determines that the terminal supports multi-network registration based on the subscription information corresponding to the terminal, record the information of the terminal in the second network; or When the core network element records that the terminal supports multi-network registration, information of the terminal in the second network is recorded.

20. The method of claim 18 or 19, further comprising: The core network element records the latest network element information corresponding to the terminal.

21. The method of claim 20, further comprising: In the case of receiving a request message sent by other network elements, the core network network element returns the latest network element information corresponding to the terminal to the other network elements, wherein the request message is used to request to obtain the information of the network element providing service for the terminal.

22. The method of any one of claims 18 to 21, wherein: The method further comprises at least one of the following: In a case where a first registration-related request of the terminal is received from a first network element of the first network, the core network network element records information of the first network element and deletes information of a second network element, where the second network element is a network element in the first network that sends a registration-related request of the terminal to the core network network element before receiving the first registration-related request; Upon receiving a second registration-related request for the terminal sent by a third network element of the second network, the core network network element records information of the third network element and deletes information of a fourth network element. The fourth network element is a network element in the second network that sends a registration-related request for the terminal to the core network element before receiving the second registration-related request.

23. A registration device, comprising: An initiating module, configured to initiate a registration request to a second network when the first network is in a registered state; Wherein, when the second network registration is successful, the terminal is in a registered state in both the first network and the second network.

24. A network information recording device, comprising: The first recording module is configured to record the information of the terminal in the second network when the information of the terminal in the first network is recorded.

25. A terminal comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the registration method according to any one of claims 1 to 17 are implemented.

26. A network side device, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the network information recording method according to any one of claims 18 to 22 are implemented.

27. A readable storage medium storing a program or instruction, wherein the program or instruction, when executed by a processor, implements the steps of the registration method according to any one of claims 1 to 17, or implements the steps of the network information recording method according to any one of claims 18 to 22.

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