Registration 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 terminal, and a network side device. In an embodiment of the present application, the registration method comprises: a terminal sending a registration request corresponding to a first identifier, wherein the first identifier is one of at least two unique identifiers associated with the terminal, the registration request comprises first indication information, and the first indication information is used for indicating that the terminal supports a target characteristic; and the terminal receiving a registration response message from a first network function; wherein the target characteristic comprises at least one of the following: dual transmission; multi-transmission; dual transmission of Mth-generation mobile communication and Nth-generation mobile communication, where both M and N are integers greater than 3, and M is different from N; dual connectivity; multi-connectivity; single subscription with dual identifiers; and single subscription with multiple identifiers.

Description

Registration method, device, terminal and network side equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202311796795.7 filed in China on December 25, 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, apparatus, terminal, and network-side equipment. Background Art

[0004] With the advancement of communication technology, communication systems typically require each subscriber to have a unique identifier, which means that only one unique identifier can be used to provide services to the subscriber. Therefore, discussions are underway to allow a subscriber to use at least two unique identifiers simultaneously to improve network service performance. However, how to register based on at least two unique identifiers associated with a subscriber has become a pressing issue. Summary of the Invention

[0005] The embodiments of the present application provide a registration method, apparatus, terminal, and network-side device, which can solve the problem of how to register based on at least two unique identifiers associated with a subscriber.

[0006] In a first aspect, a registration method is provided, comprising:

[0007] The terminal sends a registration request corresponding to a first identifier, where the first identifier is one of at least two unique identifiers associated with the terminal; the registration request includes first indication information, where the first indication information is used to indicate that the terminal supports a target feature;

[0008] The terminal receives a registration response message from the first network function;

[0009] Among them, the target characteristics include at least one of the following: dual transmission; multiple transmission; dual transmission of the Mth generation mobile communication and the Nth generation mobile communication, where M and N are both integers greater than 3, and M and N are different; dual connection; multiple connection; single contract dual identification; single contract multiple identification.

[0010] In a second aspect, a registration method is provided, comprising:

[0011] The first network function receives a registration request corresponding to a first identifier, where the first identifier is one of at least two unique identifiers associated with the terminal, and the registration request includes first indication information, where the first indication information is used to indicate that the terminal supports a target feature.

[0012] The first network function sends a registration response message to the terminal;

[0013] Among them, the target characteristics include at least one of the following: dual transmission; multiple transmission; dual transmission of the Mth generation mobile communication and the Nth generation mobile communication, where M and N are both integers greater than 3, and M and N are different; dual connection; multiple connection; single contract dual identification; single contract multiple identification.

[0014] A third aspect provides a registration method, including:

[0015] The second network function receives second indication information from the first network function, where the second indication information is used to indicate that the terminal supports the target feature;

[0016] The second network function sends a terminal routing policy to the terminal through the first network function, where the terminal routing policy is used to establish a session associated with the target characteristic;

[0017] Among them, the target characteristics include at least one of the following: dual transmission; multiple transmission; dual transmission of the Mth generation mobile communication and the Nth generation mobile communication, where M and N are both integers greater than 3, and M and N are different; dual connection; multiple connection; single contract dual identification; single contract multiple identification.

[0018] In a fourth aspect, a registration device is provided, comprising:

[0019] A first sending module, configured to send a registration request corresponding to a first identifier, where the first identifier is one of at least two unique identifiers associated with the terminal; the registration request includes first indication information, where the first indication information is used to indicate that the terminal supports a target feature;

[0020] A first receiving module, configured to receive a registration response message from a first network function;

[0021] Among them, the target characteristics include at least one of the following: dual transmission; multiple transmission; dual transmission of the Mth generation mobile communication and the Nth generation mobile communication, where M and N are both integers greater than 3, and M and N are different; dual connection; multiple connection; single contract dual identification; single contract multiple identification.

[0022] In a fifth aspect, a registration device is provided, comprising:

[0023] a second receiving module, configured to receive a registration request corresponding to a first identifier, where the first identifier is one of at least two unique identifiers associated with the terminal, the registration request including first indication information, where the first indication information is used to indicate that the terminal supports a target feature;

[0024] A second sending module, configured to send a registration response message to the terminal;

[0025] Among them, the target characteristics include at least one of the following: dual transmission; multiple transmission; dual transmission of the Mth generation mobile communication and the Nth generation mobile communication, where M and N are both integers greater than 3, and M and N are different; dual connection; multiple connection; single contract dual identification; single contract multiple identification.

[0026] In a sixth aspect, a registration device is provided, comprising:

[0027] A third receiving module is configured to receive second indication information from the first network function, where the second indication information is used to indicate that the terminal supports the target feature;

[0028] a third sending module, configured to send a terminal routing policy to the terminal through the first network function, wherein the terminal routing policy is used to establish a session associated with the target characteristic;

[0029] Among them, the target characteristics include at least one of the following: dual transmission; multiple transmission; dual transmission of the Mth generation mobile communication and the Nth generation mobile communication, where M and N are both integers greater than 3, and M and N are different; dual connection; multiple connection; single contract dual identification; single contract multiple identification.

[0030] In a seventh aspect, a terminal is provided, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0031] In the eighth aspect, a terminal is provided, comprising a processor and a communication interface, wherein the communication interface is used to send a registration request corresponding to a first identifier, where the first identifier is one of at least two unique identifiers associated with the terminal; the registration request includes first indication information, and the first indication information is used to indicate that the terminal supports the target feature; a registration response message is received from a first network function; wherein the target feature includes at least one of the following: dual transmission; multiple transmission; dual transmission of the Mth generation mobile communication and the Nth generation mobile communication, where M and N are both integers greater than 3, and M and N are different; dual connection; multiple connection; single contract dual identification; single contract multiple identification.

[0032] In the ninth aspect, a network side device is provided, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the second aspect are implemented.

[0033] In a tenth aspect, a network side device is provided, including a processor and a communication interface, wherein:

[0034] When the network side device is the first network function, the communication interface is used to receive a registration request corresponding to a first identifier, where the first identifier is one of at least two unique identifiers associated with the terminal, and the registration request includes first indication information, which is used to indicate that the terminal supports the target feature; a registration response message is sent to the terminal; wherein the target feature includes at least one of the following: dual transmission; multiple transmission; dual transmission of the Mth generation mobile communication and the Nth generation mobile communication, where M and N are both integers greater than 3, and M and N are different; dual connection; multiple connection; single contract dual identification; single contract multiple identification.

[0035] When the network side device is the second network function, the communication interface is used to receive second indication information from the first network function, and the second indication information is used to indicate that the terminal supports the target feature; the terminal routing selection policy is sent to the terminal through the first network function, and the terminal routing selection policy is used to establish a session associated with the target feature; wherein the target feature includes at least one of the following: dual transmission; multiple transmission; dual transmission of the Mth generation mobile communication and the Nth generation mobile communication, M and N are both integers greater than 3, and M and N are different; dual connection; multiple connection; single contract dual identification; single contract multiple identification.

[0036] In the eleventh aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

[0037] In the twelfth 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 method described in the first aspect, and the network side device can be used to execute the steps of the method described in the second aspect.

[0038] In the thirteenth aspect, a chip is provided, which includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the method as described in the first aspect, or to implement the method as described in the second aspect.

[0039] In the fourteenth aspect, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to implement the method as described in the first aspect, or to implement the method as described in the second aspect.

[0040] In an embodiment of the present application, a registration request corresponding to a first identifier is sent by a terminal, where the first identifier is one of at least two unique identifiers associated with the terminal; the registration request includes first indication information, where the first indication information is used to indicate that the terminal supports a target feature; the terminal receives a registration response message from a first network function; wherein the target feature includes at least one of the following: dual transmission; multi-transmission; dual transmission of the Mth generation mobile communication and the Nth generation mobile communication, where M and N are both integers greater than 3, and M and N are different; dual connection; multi-connection; single contract dual identification; single contract multiple identification. In this way, in an embodiment of the present application, the process of registering based on at least two unique identifiers associated with a contracted user is clarified, so that the network-side device can better use at least two unique identifiers to provide services for the terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] FIG1 is a block diagram of a wireless communication system to which embodiments of the present application may be applied;

[0042] Figure 2 is a schematic diagram of a traditional registration process;

[0043] FIG3 is a flowchart of a registration method according to an embodiment of the present application;

[0044] FIG4 is a second flow chart of the registration method provided in an embodiment of the present application;

[0045] FIG5 is a third flow chart of the registration method provided in an embodiment of the present application;

[0046] FIG6 is a fourth flowchart of the registration method provided in an embodiment of the present application;

[0047] FIG7 is a schematic diagram of a structure of a registration device according to an embodiment of the present application;

[0048] FIG8 is a second structural diagram of a registration device provided in an embodiment of the present application;

[0049] FIG9 is a third structural diagram of a registration device provided in an embodiment of the present application;

[0050] FIG10 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0051] FIG11 is a schematic structural diagram of a terminal provided in an embodiment of the present application;

[0052] FIG12 is a schematic diagram of the structure of the network side device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0053] 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 do not limit the number of objects, 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.

[0054] 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.

[0055] 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. thGeneration, 6G) communication system.

[0056] 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, a system-on-chip (SoC). It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may include an access network device or a core network device, wherein the access network device may also be called a radio access network (RAN) device, a radio access network function or a radio access network unit. The access network device may include a base station, a wireless local area network (WLAN) access point (AP) or a wireless fidelity (WiFi) node, etc.Among them, the base station 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.

[0057] 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.

[0058] For ease of understanding, some of the contents involved in the embodiments of this application are described below:

[0059] 2 , the registration process of a terminal in the fifth generation mobile communication (5G) includes the following steps:

[0060] In step 21, the terminal sends a registration request, which is associated with or corresponds to a unique identifier corresponding to a Subscriber Identity Module (SIM) card (eg, Subscription Permanent Identifier 1 (SUPI-1)).

[0061] Optionally, the registration request includes a Globally Unique Temporary Identifier (GUTI) saved by the terminal. The registration request is routed to the newly selected first AMF, ie, the new AMF (New AMF). The GUTI is a temporary identifier corresponding to the SUPI-1 assigned by the network.

[0062] Optionally, if the terminal does not store the GUTI, the terminal directly carries the SUPI or a Subscription Concealed Identifier (SUCI) corresponding to the SUPI.

[0063] It should be understood that the user's unique identifier can uniquely represent a user. In order to prevent it from being stolen, it is rarely transmitted over the air interface. Usually, a temporary identifier GUTI is used instead of the unique identifier. The core network side will replace the temporary identifier with a unique identifier. Among them, the unique identifier can also be called a permanent identifier, which can be a SUPI or an International Mobile Subscriber Identity (IMSI), etc. The permanent identifier can be written in a Subscriber Identity Module (SIM) card, and the terminal obtains the permanent identifier by reading the SIM card.

[0064] In step 22, the New AMF determines the second AMF that last provided services to the UE according to the GUTI, that is, the old AMF (old AMF), and obtains the terminal context from the old AMF, which includes the SUPI-1 of the terminal.

[0065] In step 23, the New AMF performs an authentication process on the terminal.

[0066] In step 24, the New AMF registers with the UDM, so that the UDM knows that the AMF provides services for the terminal. The New AMF includes SUPI-1 in the registration request.

[0067] Step 25: New AMF obtains the subscription information corresponding to SUPI-1 from UDM.

[0068] In step 26, the New AMF performs the AM Policy Association Establishment / Modification process.

[0069] For example, the PCF provides URSP (UE Route Selection Policy) information to the AMF. The URSP information is used by the terminal to decide how to establish a protocol data unit (PDU) session.

[0070] Step 27: The New AMF sends a registration accept message to the UE to complete the registration process.

[0071] The URSP information may be sent in the Registration Accept message, or may be sent to the UE through a User Configuration Update (UCU) before or after the Registration Accept message.

[0072] The registration method provided in the embodiments of the present application is described in detail below through some embodiments and their application scenarios in conjunction with the accompanying drawings.

[0073] 3 , an embodiment of the present application provides a registration method. As shown in FIG3 , the registration method includes:

[0074] Step 301: A terminal sends a registration request corresponding to a first identifier, where the first identifier is one of at least two unique identifiers associated with the terminal; the registration request includes first indication information, where the first indication information is used to indicate that the terminal supports a target feature;

[0075] Step 302: The terminal receives a registration response message from the first network function;

[0076] The target feature includes at least one of the following: dual steer; multiple steer; dual steer of Mth generation mobile communication and Nth generation mobile communication, where M and N are both integers greater than 3 and are different; dual connection; multiple connection; two SUPIs sharing one subscription profile; and multiple SUPIs sharing one subscription profile.

[0077] In an embodiment of the present application, at least two unique identifiers associated with the terminal are stored in both the terminal and the network side device, and the at least two unique identifiers can be identified as the same terminal or the same subscriber in the network side device. The terminal can send a registration request for the stored first identifier, such as SUPI-1. The registration request can be routed to the newly selected first network function, which can be an AMF or a network element with the same function as the AMF. The first network function can determine the other network function (such as the old AMF) that last provided services to the terminal based on the registration request, and request the terminal context from the other network function, which includes the terminal's SUPI-1. The first network function can then perform an authentication process on the terminal. After authentication, the first network function will register with the third network function, so that the third network function knows that the first network function provides services to the terminal, where the third network function can be understood as a UDM or a network element with UDM functions.

[0078] Optionally, the values ​​of M and N can be set according to actual conditions. For example, in some embodiments, M is 4, N can be 5 or 6, etc.; when M is 5, N can be 6 or 7, etc. That is, the dual transmission of the Mth generation mobile communication and the Nth generation mobile communication can include at least one of the following: dual transmission of the 4th generation mobile communication (4G) and the 5th generation mobile communication (5G); dual transmission of the 4th generation mobile communication and the 6th generation mobile communication (6G); and dual transmission of the 5th generation mobile communication and the 6th generation mobile communication.

[0079] Optionally, the above-mentioned dual transmission can be understood as transmitting service data through two third-generation partnership project (3GPP) access networks, wherein each 3GPP access network corresponds to a session (such as a first session or a second session). For example, it includes selecting (steer) from two 3GPP access networks, switching (switch) between two 3GPP access networks, or using two 3GPP access networks for split transmission at the same time. The above-mentioned dual transmission of M-generation mobile communication and N-generation mobile communication can be understood as: transmitting service data through the 3GPP access network corresponding to the M-generation mobile communication and the 3GPP access network corresponding to the N-generation mobile communication, that is, the two 3GPP access networks are the 3GPP access network corresponding to the M-generation mobile communication and the GPP access network corresponding to the N-generation mobile communication, respectively.

[0080] Optionally, the above-mentioned multiple transmissions can be understood as transmitting service data through at least three 3GPP access networks; for example, including selecting (steer) from three 3GPP access networks, switching (switch) between three 3GPP access networks, or using at least two 3GPP access networks simultaneously for separate transmission.

[0081] Optionally, the dual connection can be understood as using two 3GPP access networks for data transmission, each 3GPP access network corresponds to a unique identifier, and the two 3GPP access networks can be used simultaneously or in a time-sharing manner. The multi-connection can be understood as using three 3GPP access networks for data transmission, each 3GPP access network corresponds to a unique identifier, and the three 3GPP access networks can be used simultaneously or in a time-sharing manner.

[0082] The above-mentioned single-subscription dual-identification can be understood as one user corresponding to two unique identifiers (such as SUPI), that is, one user's subscription configuration (subscription profile) corresponds to two unique identifiers; the above-mentioned single-subscription multiple-identification can be understood as one user corresponding to multiple unique identifiers, that is, one user's subscription configuration corresponds to at least 3 unique identifiers.

[0083] Optionally, after the first network function completes the registration, it will send a registration response message to the terminal to complete the registration process. The registration response message can be understood as a registration acceptance response message.

[0084] Optionally, a terminal can be understood as a subscriber, and the association of the terminal with at least two unique identifiers can be understood as the association of a subscriber with at least two unique identifiers. Since the first indication information carried in the registration request indicates that the terminal supports the target feature, the network-side device can be informed that the terminal is associated with at least two unique identifiers, thereby assisting the network-side device in implementing the terminal registration process, and enabling the network-side device to better use the at least two unique identifiers to provide services for the terminal.

[0085] In an embodiment of the present application, a registration request corresponding to a first identifier is sent by a terminal, where the first identifier is one of at least two unique identifiers associated with the terminal; the registration request includes first indication information, where the first indication information is used to indicate that the terminal supports a target feature; the terminal receives a registration response message from a first network function; wherein the target feature includes at least one of the following: dual transmission; multi-transmission; dual transmission of the Mth generation mobile communication and the Nth generation mobile communication, where M and N are both integers greater than 3, and M and N are different; dual connection; multi-connection; single contract dual identification; single contract multiple identification. In this way, in an embodiment of the present application, the process of registering based on at least two unique identifiers associated with a contracted user is clarified, so that the network-side device can better use at least two unique identifiers to provide services for the terminal.

[0086] Optionally, in some embodiments, the registration response message includes second indication information, where the second indication information is used to indicate that the network supports the target feature or indicates that the network does not support the target feature.

[0087] In the embodiment of the present application, the network supporting or not supporting the target feature can be understood as the first network function supporting or not supporting the target feature. Since the first network function sends the second indication information to the terminal, the terminal and the network side device can maintain consistent understanding of whether to use the target feature.

[0088] Optionally, in some embodiments, the method further comprises:

[0089] The terminal receives a terminal route selection policy (UE Route Selection Policy, URSP) sent by the second network function, where the terminal route selection policy is used to establish a session associated with the target characteristic (such as a PDU session).

[0090] It should be noted that a session associated with a target feature can also be understood as a session corresponding to the target feature, that is, the session supports the target feature.

[0091] In the embodiment of the present application, the above-mentioned second network function can be understood as PCF or a network element having the same function as PCF.

[0092] It should be noted that in an embodiment of the present application, after the first network function registers with the third network function, the first network function can obtain target information from the third network function, where the target information includes a second identifier, where the second identifier includes a unique identifier other than the first identifier among the at least two unique identifiers. Furthermore, the target information also includes at least one of the contract information associated with the first identifier and the session information of the second identifier. The contract information associated with the first identifier may include information about the terminal's contract target characteristics, and the above-mentioned session information may include PDU session information or public data network (PDN) connection information.

[0093] It should be noted that the contract information associated with the first identifier can be understood as the contract information corresponding to the first identifier.

[0094] For example, a subscriber has two unique identifiers: a first identifier and a second identifier. When the terminal performs a registration process corresponding to the first identifier, the first network function provides the first identifier to the third network function. In addition to providing the subscription information associated with the first identifier to the first network function, the third network function also sends the second identifier to the first network function. Optionally, it may also send session information corresponding to the second identifier, which may include a PDU session or a PDN connection.

[0095] Optionally, the first identifier is used for the UE to register on the 5G network, and the second identifier is used for the UE to register on the 4G network; or, the first identifier is used for the UE to register on the 6G network, and the second identifier is used for the UE to register on the 5G network; or, the first identifier is used for the UE to register on the 6G network, and the second identifier is used for the UE to register on the 4G network.

[0096] After the terminal obtains the target information, it can save the association relationship between the first identifier and the second identifier, so that services can be provided to the terminal through at least two unique identifiers. After this, the first network function can execute the AM Policy Association Establishment / Modification process. For example, the first network function provides the second network function with an indication that the terminal supports the target feature, and the second network function provides the first network function with a URSP rule (rule), which includes an indication corresponding to the target feature. Specifically, when the URSP is enhanced, the enhanced URSP can be used by the terminal to determine that a session that supports the target feature can be established. For example, when the target feature is dual steer, the terminal determines that a dual steer session can be established.

[0097] The enhanced URSP includes the following enhancements to the access type of the URSP route selection components (RSD):

[0098] Access type preference: indicates the preferred access type (3GPP or non-3GPP or multi-access or first feature) when the terminal establishes a PDU session for a matching application.

[0099] Optionally, the URSP may be sent to the terminal through the UCU before or after sending the registration response message.

[0100] In order to better understand the present application, some examples are provided below for illustration.

[0101] Referring to Figure 4, the registration process includes:

[0102] Step 41: The terminal sends a registration request for the saved first identifier, such as SUPI-1. The registration request includes the GUTI saved by the terminal. The request is routed to the newly selected AMF, i.e., the new AMF.

[0103] The registration request includes first indication information that the terminal supports the target feature.

[0104] In step 42, the New AMF determines the AMF that last provided services to the UE, that is, the old AMF, based on the GUTI, and obtains the terminal context from the old AMF, which includes the SUPI-1 of the UE.

[0105] The GUTI is a temporary identifier corresponding to the SUPI-1 allocated by the old AMF. The new AMF can find the old AMF according to the GUTI, and the old AMF can determine the SUPI-1 according to the GUTI.

[0106] In step 43, the New AMF performs an authentication process on the UE.

[0107] In step 44, the New AMF registers with the UDM, so that the UDM knows that the AMF provides services for the UE. The New AMF includes SUPI-1 in the registration request.

[0108] In step 45, the New AMF obtains target information from the UDM. The target information includes at least one of the following:

[0109] Second identification;

[0110] The PDN connection information corresponding to the second identifier may include, for example, the access point name (APN) and the PDN gateway (PWG) identifier (IDentify, ID); the contract information associated with the first identifier, wherein the contract information associated with the first identifier may include: information on the terminal contract target characteristics.

[0111] It should be noted that the PGW ID can be replaced with the PGW's fully qualified domain name (FQDN) or the PGW's IP address.

[0112] Optionally, the AMF saves the association between the first identifier and the second identifier.

[0113] It should be understood that when a subscribed user (i.e., terminal) has multiple unique identifiers, and one of them is the first identifier, UDM will also send the other unique identifiers to AMF. For example, a subscribed user has two unique identifiers, namely the first identifier and the second identifier. When the UE performs the registration process corresponding to the first identifier, AMF provides the first identifier to UDM. In addition to providing the subscription information associated with the first identifier to AMF, UDM will also send the second identifier to AMF, and optionally further send the session information corresponding to the second identifier (for example, including PDU session information or PDN connection information).

[0114] Step 46: The New AMF executes the AM Policy Association Establishment / Modification process.

[0115] For example, the New AMF provides the PCF with an indication that the terminal supports the target feature, and the PCF provides the New AMF with a URSP rule, which includes an indication corresponding to the target feature.

[0116] Specifically, when the URSP is enhanced, the enhanced URSP can be used by the terminal to determine whether a session supporting the target feature can be established. For example, when the target feature is dual steer, the terminal determines whether a dual steer session can be established.

[0117] Optionally, the URSP may be sent to the terminal through the UCU before or after sending the registration response message.

[0118] In step 47, the New AMF sends a Registration Accept message to the terminal to complete the registration process. The Registration Accept message includes information indicating whether the network supports or does not support the target feature. For example, a Support Target Feature Confirmation message or a Support Target Feature Accept message.

[0119] 5 , the embodiment of the present application further provides a registration method. As shown in FIG5 , the registration method includes:

[0120] Step 501: A first network function receives a registration request corresponding to a first identifier, where the first identifier is one of at least two unique identifiers associated with the terminal, and the registration request includes first indication information, where the first indication information is used to indicate that the terminal supports a target feature.

[0121] Step 502: The first network function sends a registration response message to the terminal;

[0122] Among them, the target characteristics include at least one of the following: dual transmission; multiple transmission; dual transmission of the Mth generation mobile communication and the Nth generation mobile communication, where M and N are both integers greater than 3, and M and N are different; dual connection; multiple connection; single contract dual identification; single contract multiple identification.

[0123] Optionally, the method further includes:

[0124] The first network function obtains target information from a third network function, where the target information includes a second identifier, and the second identifier includes a unique identifier other than the first identifier among the at least two unique identifiers;

[0125] The first network function stores an association relationship between the first identifier and the second identifier.

[0126] Optionally, the registration response message includes second indication information, where the second indication information is used to indicate that the network supports the target feature or does not support the target feature.

[0127] Optionally, the target information further includes session information corresponding to the second identifier.

[0128] Optionally, the method further includes:

[0129] The first network function sends second indication information to the second network function, where the second indication information is used to indicate that the terminal supports a target feature;

[0130] The first network function receives a terminal routing policy from the second network function, the terminal routing policy being used to establish a session associated with the target characteristic;

[0131] The first network function sends the terminal routing policy to the terminal.

[0132] Optionally, the first identifier is used for the UE to register on the 5G network, and the second identifier is used for the UE to register on the 4G network; or, the first identifier is used for the UE to register on the 6G network, and the second identifier is used for the UE to register on the 5G network; or, the first identifier is used for the UE to register on the 6G network, and the second identifier is used for the UE to register on the 4G network.

[0133] 6 , an embodiment of the present application further provides a registration method. As shown in FIG6 , the registration method includes:

[0134] Step 601: A second network function receives second indication information from a first network function, where the second indication information is used to indicate that a terminal supports a target feature.

[0135] Step 602: The second network function sends a terminal routing policy to the terminal through the first network function, where the terminal routing policy is used to establish a session associated with the target characteristic.

[0136] Among them, the target characteristics include at least one of the following: dual transmission; multiple transmission; dual transmission of the Mth generation mobile communication and the Nth generation mobile communication, where M and N are both integers greater than 3, and M and N are different; dual connection; multiple connection; single contract dual identification; single contract multiple identification.

[0137] It should be understood that in the embodiment of the present application, the above-mentioned second indication information is indication information triggered during the registration process corresponding to the first identifier, and the first identifier is one of the at least two unique identifiers associated with the terminal.

[0138] 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.

[0139] 7 , an embodiment of the present application further provides a registration device. As shown in FIG7 , the registration device 700 includes:

[0140] A first sending module 701 is configured to send a registration request corresponding to a first identifier, where the first identifier is one of at least two unique identifiers associated with a terminal; the registration request includes first indication information, where the first indication information is used to indicate that the terminal supports a target feature;

[0141] A first receiving module 702 is configured to receive a registration response message from a first network function;

[0142] Among them, the target characteristics include at least one of the following: dual transmission; multiple transmission; dual transmission of the Mth generation mobile communication and the Nth generation mobile communication, where M and N are both integers greater than 3, and M and N are different; dual connection; multiple connection; single contract dual identification; single contract multiple identification.

[0143] Optionally, the registration response message includes second indication information, where the second indication information is used to indicate that the network supports the target feature or indicates that the network does not support the target feature.

[0144] Optionally, the first receiving module 702 is further configured to: receive a terminal routing selection policy sent by the second network function, where the terminal routing selection policy is used to establish a session associated with the target characteristic.

[0145] 8 , an embodiment of the present application further provides a registration device. As shown in FIG8 , the registration device 800 includes:

[0146] A second receiving module 801 is configured to receive a registration request corresponding to a first identifier, where the first identifier is one of at least two unique identifiers associated with a terminal, and the registration request includes first indication information, where the first indication information is used to indicate that the terminal supports a target feature;

[0147] A second sending module 802 is configured to send a registration response message to the terminal;

[0148] Among them, the target characteristics include at least one of the following: dual transmission; multiple transmission; dual transmission of the Mth generation mobile communication and the Nth generation mobile communication, where M and N are both integers greater than 3, and M and N are different; dual connection; multiple connection; single contract dual identification; single contract multiple identification.

[0149] Optionally, the registration response message includes second indication information, where the second indication information is used to indicate that the network supports the target feature or does not support the target feature.

[0150] Optionally, the registration device 800 further includes:

[0151] an acquisition module, configured to acquire target information from a third network function, the target information including a second identifier, the second identifier including a unique identifier other than the first identifier among the at least two unique identifiers;

[0152] A storage module is used to store the association relationship between the first identifier and the second identifier.

[0153] Optionally, the target information further includes session information corresponding to the second identifier.

[0154] Optionally, the second sending module 802 is further configured to: send second indication information to the second network function, where the second indication information is used to indicate that the terminal supports the target feature;

[0155] The second receiving module 801 is further configured to: receive a terminal routing policy from the second network function, the terminal routing policy being used to establish a session associated with the target characteristic;

[0156] The second sending module 802 is further configured to send the terminal routing policy to the terminal.

[0157] 9 , an embodiment of the present application further provides a registration device. As shown in FIG9 , the registration device 900 includes:

[0158] The third receiving module 901 is configured to receive second indication information from the first network function, where the second indication information is used to indicate that the terminal supports a target feature;

[0159] A third sending module 902 is configured to send a terminal routing policy to the terminal through the first network function, where the terminal routing policy is used to establish a session associated with the target characteristic;

[0160] Among them, the target characteristics include at least one of the following: dual transmission; multiple transmission; dual transmission of the Mth generation mobile communication and the Nth generation mobile communication, where M and N are both integers greater than 3, and M and N are different; dual connection; multiple connection; single contract dual identification; single contract multiple identification.

[0161] The registration device in the embodiments of the present application can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or chip. The electronic device can be a terminal, or it can be other devices other than a terminal. For example, the terminal can include but is not limited to the types of terminal 11 listed above, and other devices can be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0162] The registration device provided in the embodiment of the present application can implement the various processes implemented in the method embodiments of Figures 3 to 6 and achieve the same technical effects. To avoid repetition, they will not be described here.

[0163] As shown in Figure 10, an embodiment of the present application also provides a communication device 1000, including a processor 1001 and a memory 1002, and the memory 1002 stores a program or instruction that can be run on the processor 1001. When the program or instruction is executed by the processor 1001, the various steps of the above-mentioned registration method embodiment are implemented and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0164] The present application also provides a terminal including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps of the method embodiment shown in FIG3 . 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, FIG11 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of the present application.

[0165] The terminal 1100 includes but is not limited to: a radio frequency unit 1101, a network module 1102, an audio output unit 1103, an input unit 1104, a sensor 1105, a display unit 1106, a user input unit 1107, an interface unit 1108, a memory 1109 and at least some of the components of the processor 1110.

[0166] Those skilled in the art will appreciate that the terminal 1100 may also include a power supply (such as a battery) to power various components. The power supply may be logically connected to the processor 1110 via a power management system, thereby enabling the power management system to manage charging, discharging, and power consumption. The terminal structure shown in FIG11 does not limit the terminal. The terminal may include more or fewer components than shown, or combine certain components, or arrange the components differently, which will not be described in detail here.

[0167] It should be understood that in an embodiment of the present application, the input unit 1104 may include a graphics processing unit (GPU) 11041 and a microphone 11042, and the graphics processor 11041 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 1106 may include a display panel 11061, and the display panel 11061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1107 includes a touch panel 11071 and at least one of other input devices 11072. The touch panel 11071 is also called a touch screen. The touch panel 11071 may include two parts: a touch detection device and a touch controller. Other input devices 11072 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.

[0168] In the embodiment of the present application, after receiving downlink data from a network-side device, the RF unit 1101 may transmit the data to the processor 1110 for processing. Furthermore, the RF unit 1101 may send uplink data to the network-side device. Typically, the RF unit 1101 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0169] The memory 1109 can be used to store software programs or instructions and various data. The memory 1109 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 1109 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 1109 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0170] Processor 1110 may include one or more processing units. Optionally, processor 1110 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 1110.

[0171] The radio frequency unit 1101 is configured to send a registration request corresponding to a first identifier, where the first identifier is one of at least two unique identifiers associated with the terminal; the registration request includes first indication information, where the first indication information is used to indicate that the terminal supports a target feature; and receive a registration response message from the first network function;

[0172] Among them, the target characteristics include at least one of the following: dual transmission; multiple transmission; dual transmission of the Mth generation mobile communication and the Nth generation mobile communication, where M and N are both integers greater than 3, and M and N are different; dual connection; multiple connection; single contract dual identification; single contract multiple identification.

[0173] Optionally, the registration response message includes second indication information, where the second indication information is used to indicate that the network supports the target feature or indicates that the network does not support the target feature.

[0174] Optionally, the radio frequency unit 1101 is further configured to: receive a terminal routing selection policy sent by a second network function, where the terminal routing selection policy is used to establish a session associated with the target characteristic.

[0175] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the terminal side method embodiment and achieve the same or corresponding technical effects. To avoid repetition, it will not be repeated here.

[0176] The present application also provides a network-side device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps of the method embodiment shown in Figure 5 or Figure 6. This network-side device embodiment corresponds to the aforementioned network-side device 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.

[0177] Specifically, the embodiment of the present application further provides a network side device. As shown in FIG12 , the network side device 1200 includes: a processor 1201, a network interface 1202, and a memory 1203. The network interface 1202 is, for example, a common public radio interface (CPRI).

[0178] Specifically, the network side device 1200 of the embodiment of the present application also includes: instructions or programs stored in the memory 1203 and executable on the processor 1201. The processor 1201 calls the instructions or programs in the memory 1203 to execute the methods executed by the modules shown in FIG8 or FIG9 and achieve the same technical effect. To avoid repetition, they will not be elaborated here.

[0179] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned registration method embodiment are implemented and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0180] 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.

[0181] 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 embodiment and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0182] 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.

[0183] 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 embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0184] An embodiment of the present application also 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 described above, and the network-side device can be used to execute the steps of the registration method for the first network function and the second network function side described above.

[0185] 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.

[0186] 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.

[0187] 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: The terminal sends a registration request corresponding to a first identifier, where the first identifier is one of at least two unique identifiers associated with the terminal; The registration request includes first indication information for indicating that the terminal supports a target feature; The terminal receives a registration response message from a first network function; Wherein, the target feature includes at least one of the following: dual transmission; multi-transmission; dual transmission of the Mth generation mobile communication and the Nth generation mobile communication, where both M and N are integers greater than 3 and M and N are different; dual connection; multi-connection; single subscription dual identifier; single subscription multi-identifier.

2. The method according to claim 1, wherein, The registration response message includes second indication information for indicating that the network supports the target feature or indicating that the network does not support the target feature.

3. The method according to claim 1 or 2, the method further comprising: The terminal receives a terminal routing selection policy sent by a second network function, where the terminal routing selection policy is used to establish a session associated with the target feature.

4. A registration method, comprising: A first network function receives a registration request corresponding to a first identifier, where the first identifier is one of at least two unique identifiers associated with a terminal, and the registration request includes first indication information for indicating that the terminal supports a target feature; The first network function sends a registration response message to the terminal; Wherein, the target feature includes at least one of the following: dual transmission; multi-transmission; dual transmission of the Mth generation mobile communication and the Nth generation mobile communication, where both M and N are integers greater than 3 and M and N are different; dual connection; multi-connection; single subscription dual identifier; single subscription multi-identifier.

5. The method according to claim 4, wherein The registration response message includes second indication information for indicating that the network supports the target feature or that the network does not support the target feature.

6. The method according to claim 4 or 5, the method further comprising: The first network function obtains target information from a third network function, where the target information includes a second identifier, and the second identifier includes the unique identifier other than the first identifier among the at least two unique identifiers; The first network function saves the association relationship between the first identifier and the second identifier.

7. The method according to claim 6, wherein, The target information further includes session information corresponding to the second identifier.

8. The method according to claim 6 or 7, the method further comprising: The first network function sends second indication information to a second network function, where the second indication information is used to indicate that the terminal supports a target feature; The first network function receives a terminal routing selection policy from the second network function, where the terminal routing selection policy is used to establish a session associated with the target feature; The first network function sends the terminal routing selection policy to the terminal.

9. A registration method, comprising: A second network function receives second indication information from a first network function, where the second indication information is used to indicate that a terminal supports a target feature; The second network function sends a terminal routing selection policy to the terminal through the first network function, where the terminal routing selection policy is used to establish a session associated with the target feature; Among them, the target feature includes at least one of the following: dual transmission; multi-transmission; dual transmission of the Mth generation mobile communication and the Nth generation mobile communication, where both M and N are integers greater than 3 and M and N are different; dual connection; multi-connection; single subscription dual identification; single subscription multi-identification.

10. A registration device, comprising: A first sending module, configured to send a registration request corresponding to a first identifier, where the first identifier is one of at least two unique identifiers associated with the terminal; The registration request includes first indication information, and the first indication information is used to indicate that the terminal supports a target feature; A first receiving module, configured to receive a registration response message from a first network function; Among them, the target feature includes at least one of the following: dual transmission; multi-transmission; dual transmission of the Mth generation mobile communication and the Nth generation mobile communication, where both M and N are integers greater than 3 and M and N are different; dual connection; multi-connection; single subscription dual identification; single subscription multi-identification.

11. The device according to claim 10, wherein, The registration response message includes second indication information, and the second indication information is used to indicate that the network supports the target feature or indicates that the network does not support the target feature.

12. The device according to claim 10 or 11, wherein The first receiving module is further configured to: receive a terminal routing selection policy sent by a second network function, where the terminal routing selection policy is used to establish a session associated with the target feature.

13. A registration device, comprising: A second receiving module, configured to receive a registration request corresponding to a first identifier, where the first identifier is one of at least two unique identifiers associated with the terminal, and the registration request includes first indication information, and the first indication information is used to indicate that the terminal supports a target feature; A second sending module, configured to send a registration response message to the terminal; Among them, the target feature includes at least one of the following: dual transmission; multi-transmission; dual transmission of the Mth generation mobile communication and the Nth generation mobile communication, where both M and N are integers greater than 3 and M and N are different; dual connection; multi-connection; single subscription dual identification; single subscription multi-identification.

14. The apparatus according to claim 13, wherein, The registration response message includes second indication information, and the second indication information is used to indicate that the network supports the target feature or the network does not support the target feature.

15. The device according to claim 13 or 14, the device further comprising: An obtaining module, configured to obtain target information from a third network function, where the target information includes a second identifier, and the second identifier includes the unique identifier other than the first identifier among the at least two unique identifiers; A storage module, configured to save the association relationship between the first identifier and the second identifier.

16. The apparatus according to claim 15, wherein The target information further includes session information corresponding to the second identifier.

17. The device according to claim 15 or 16, wherein, The second sending module is further configured to: send second indication information to a second network function, where the second indication information is used to indicate that the terminal supports a target feature; The second receiving module is further configured to: receive a terminal routing selection policy from the second network function, where the terminal routing selection policy is used to establish a session associated with the target feature; The second sending module is further configured to: send the terminal routing selection policy to the terminal.

18. A registration device, comprising: A third receiving module, configured to receive second indication information from a first network function, where the second indication information is used to indicate that a terminal supports a target feature; A third sending module, configured to send a terminal routing selection policy to the terminal through the first network function, where the terminal routing selection policy is used to establish a session associated with the target feature; Wherein, the target feature includes at least one of the following: dual transmission; multi-transmission; dual transmission of the Mth generation mobile communication and the Nth generation mobile communication, where both M and N are integers greater than 3 and M and N are different; dual connection; multi-connection; single subscription dual identification; single subscription multi-identification.

19. A terminal, comprising a processor and a memory, where the memory stores a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, the steps of the registration method according to any one of claims 1 to 3 are implemented.

20. A network-side device, comprising a processor and a memory, where the memory stores a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, the steps of the registration method according to any one of claims 4 to 9 are implemented.

21. A readable storage medium, where a program or instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the registration method according to any one of claims 1 to 9 are implemented.

22. A chip, comprising a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the steps of the registration method according to any one of claims 1 to 9.

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