Registration method and device, terminal and network side equipment

Abstract

The invention discloses a registration method and device, a terminal and network side equipment, and belongs to the technical field of communication, and the registration method comprises the steps that the terminal sends a registration request corresponding to a first identifier, and 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; the terminal receives a registration response message from the first network function; wherein the target characteristic comprises at least one of the following items: dual transmission; multi-transmission; the Mth-generation mobile communication and the Nth-generation mobile communication are in dual transmission, M and N are integers greater than 3, and M and N are different; double connection; multi-connection; single-contract double-identification is carried out; and a single contract has multiple identifications.

Description

Technical Field

[0001] This application belongs to the field of communication technologies, and particularly relates to a registration method, apparatus, terminal, and network-side device. Background Art

[0002] With the development of communication technologies, in a communication system, usually a subscribed user has a unique identifier, and thus only one unique identifier can be used to provide services for the user. Therefore, it is discussed to consider introducing that a subscribed user can use at least two unique identifiers simultaneously to improve the service performance of the network. However, how to perform registration based on at least two unique identifiers associated with a subscribed user becomes a problem that urgently needs to be solved. Summary of the Invention

[0003] Embodiments of this application provide a registration method, apparatus, terminal, and network-side device, which can solve the problem of how to perform registration based on at least two unique identifiers associated with a subscribed user.

[0004] In a first aspect, a registration method is provided, including:

[0005] 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, and the first indication information is used to indicate that the terminal supports a target feature;

[0006] The terminal receives a registration response message from a first network function;

[0007] 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 is different from N; dual connection; multi-connection; single subscription with dual identifiers; single subscription with multiple identifiers.

[0008] In a second aspect, a registration method is provided, including:

[0009] 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, and the first indication information is used to indicate that the terminal supports a target feature;

[0010] The first network function sends a registration response message to the terminal;

[0011] 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 is different from N; dual connection; multi-connection; single subscription with dual identifiers; single subscription with multiple identifiers.

[0012] In a third aspect, a registration method is provided, including:

[0013] 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 a target feature;

[0014] 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;

[0015] 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.

[0016] In a fourth aspect, a registration device is provided, including:

[0017] 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;

[0018] A first receiving module, configured to receive a registration response message from the first network function;

[0019] 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.

[0020] In a fifth aspect, a registration device is provided, including:

[0021] 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;

[0022] A second sending module, configured to send a registration response message to the terminal;

[0023] 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.

[0024] In a sixth aspect, a registration device is provided, including:

[0025] 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;

[0026] A third sending module, configured to send a terminal routing selection policy to the terminal through a first network function, where the terminal routing selection policy is used to establish a session associated with the target feature;

[0027] 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.

[0028] In a seventh aspect, a terminal is provided, which includes a processor and a memory. The memory stores a program or instruction that can run on the processor. When the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0029] In an eighth aspect, a terminal is provided, which includes a processor and a communication interface. Wherein, the communication interface is used to send a registration request corresponding to a first identifier, and 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; receive 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 identification; single subscription multi-identification.

[0030] In a ninth aspect, a network-side device is provided, which includes a processor and a memory. The memory stores a program or instruction that can run on the processor. When the program or instruction is executed by the processor, the steps of the method described in the second aspect are implemented.

[0031] In a tenth aspect, a network-side device is provided, which includes a processor and a communication interface. Wherein,

[0032] When the network-side device is a first network function, the communication interface is used to receive a registration request corresponding to a first identifier, and 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; send 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 identification; single subscription multi-identification.

[0033] When the network - side device is a second network function, the communication interface is used to receive second indication information from a first network function, and the second indication information is used to indicate that the terminal supports a target feature; and 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 M - th generation mobile communication and the N - th generation mobile communication, where M and N are both integers greater than 3 and M is different from N; dual - connection; multi - connection; single - subscription dual - identification; single - subscription multi - identification.

[0034] In an eleventh aspect, a readable storage medium is provided, on which a program or instruction is stored, and 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.

[0035] In a twelfth aspect, a wireless communication system is provided, including: a terminal and a network - side device, where 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.

[0036] In a thirteenth aspect, a chip is provided, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the method described in the first aspect, or implement the method described in the second aspect.

[0037] In a fourteenth aspect, a computer program / program product is provided, the computer program / program product is stored in a storage medium, and the computer program / program product is executed by at least one processor to implement the method described in the first aspect, or implement the method described in the second aspect.

[0038] In the embodiments of the present application, a registration request corresponding to a first identifier is sent through 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, and 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 M - th generation mobile communication and the N - th generation mobile communication, where M and N are both integers greater than 3 and M is different from N; dual - connection; multi - connection; single - subscription dual - identification; single - subscription multi - identification. In this way, in the embodiments of the present application, the process of registering based on at least two unique identifiers associated with one subscribed 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

[0039] Figure 1 is a block diagram of a wireless communication system to which embodiments of the present application can be applied;

[0040] Figure 2 is a schematic diagram of a traditional registration process;

[0041] Figure 3 is one of the schematic diagrams of the registration method provided by the embodiments of the present application;

[0042] Figure 4 is another schematic diagram of the registration method provided by the embodiments of the present application;

[0043] Figure 5 is yet another schematic diagram of the registration method provided by the embodiments of the present application;

[0044] Figure 6 is still another schematic diagram of the registration method provided by the embodiments of the present application;

[0045] Figure 7 is one of the schematic diagrams of the registration device provided by the embodiments of the present application;

[0046] Figure 8 is another schematic diagram of the registration device provided by the embodiments of the present application;

[0047] Figure 9 is yet another schematic diagram of the registration device provided by the embodiments of the present application;

[0048] Figure 10 is the schematic diagram of the communication device provided by the embodiments of the present application;

[0049] Figure 11 is the schematic diagram of the terminal provided by the embodiments of the present application;

[0050] Figure 12 is the schematic diagram of the network-side device provided by the embodiments of the present application. Detailed implementation manners

[0051] The terms "first", "second", etc. in this application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances, so that the embodiments of this application can be implemented in an order other than those illustrated or described herein. 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 multiple. In addition, "or" in this application means at least one of the connected objects. For example, "A or B" covers three scenarios, namely, Scenario 1: including A and not including B; Scenario 2: including B and not including A; Scenario 3: including both A and B. The character " / " generally indicates that the related objects before and after are in an "or" relationship.

[0052] The term "indication" in this application can be either a direct indication (or an explicit indication) or an indirect indication (or an implicit indication). Among them, a direct indication can be understood as that the sender clearly tells the receiver specific information, operations to be performed, or request results, etc. in the sent indication; an indirect indication can be understood as that the receiver determines the corresponding information according to the indication sent by the sender, or makes a judgment and determines the operations to be performed or request results, etc. according to the judgment result.

[0053] It is worth pointing out that the technology described in the embodiments of this 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 this application are often used interchangeably. The described technology can be used not only in the systems and radio technologies mentioned above, but also in other systems and radio technologies. The following description describes the New Radio (NR) system for example purposes, and uses NR terms in most of the following descriptions. However, these technologies can also be applied to systems other than the NR system, such as the 6th generation (6 thGeneration, 6G) communication system.

[0054] Figure 1The block diagram of a wireless communication system to which embodiments of the present application can be applied is shown. The wireless communication system includes a terminal 11 and a network-side device 12. Among them, the terminal 11 can be a mobile phone, a tablet personal computer, a laptop computer, a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device, a flight vehicle, a vehicle user equipment (VUE), a shipborne device, a pedestrian user equipment (PUE), a smart home (home appliances with wireless communication functions, such as refrigerators, TVs, washing machines, or furniture, etc.), a game console, a personal computer (PC), a teller machine, or a self-service machine, etc., which are terminal-side devices. Wearable devices include: smart watches, smart bracelets, smart earphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart ankle chains, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle user equipment can also be called a vehicle terminal, a vehicle controller, a vehicle module, a vehicle component, a vehicle chip, or a vehicle unit, etc. In addition to the above terminal devices, it can also be a chip inside 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 embodiments of the present application. The network-side device 12 can include an access network device or a core network device. Among them, the access network device can also be called a radio access network (RAN) device, a radio access network function, or a radio access network unit. The access network device can include a base station, a wireless local area network (WLAN) access point (AP), or a wireless fidelity (WiFi) node, etc.Among them, the base station may be referred to as Node B (NB), Evolved Node B (eNB), the next generation Node B (gNB), New Radio Node B (NR Node B), access point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), home Node B (HNB), home evolved Node B, Transmission Reception Point (TRP), or some other suitable term in the art. As long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiments of this application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.

[0055] The core network device may include, but is not limited to, at least one of the following: core network node, core network function, Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (L-NEF), Binding Support Function (BSF), Application Function (AF), etc. It should be noted that in the embodiments of this application, only the core network devices in the NR system are taken as examples for introduction, and the specific types of core network devices are not limited.

[0056] For ease of understanding, some content related to the embodiments of this application is described below:

[0057] Refer to Figure 2 , the registration process of the terminal in the Fifth Generation Mobile Communication (5G) includes the following steps:

[0058] Step 21, the terminal sends a registration request, which is associated with or corresponds to the unique identifier of the Subscriber Identity Module (SIM) card (e.g., Subscription Permanent Identifier 1 (SUPI-1)).

[0059] Optionally, the registration request contains the Globally Unique Temporary Identifier (GUTI) saved by the terminal. The registration request is routed to the newly selected first AMF, i.e., the New AMF. The GUTI is the temporary identifier corresponding to the SUPI-1 allocated by the network.

[0060] Optionally, if the terminal does not save the GUTI, the terminal directly carries the SUPI or the Subscription Concealed Identifier (SUCI) corresponding to the SUPI.

[0061] It should be understood that the unique identifier of the user can uniquely represent a user. To prevent theft, it is rarely transmitted over the air interface. Usually, the temporary identifier GUTI is used instead of the unique identifier. The core network side will replace the temporary identifier with the unique identifier. Among them, the unique identifier can also be called the permanent identifier, which can be SUPI or International Mobile Subscriber Identity (IMSI), etc. The permanent identifier can be written in the Subscriber Identity Module (SIM) card, and the terminal obtains the permanent identifier by reading the SIM card.

[0062] Step 22, the New AMF determines the second AMF that provided services to the UE last time, i.e., the old AMF, according to the GUTI, and obtains the context of the terminal from the old AMF. The context contains the SUPI-1 of the terminal.

[0063] Step 23, the New AMF performs an authentication process on the terminal.

[0064] Step 24, the New AMF registers with the UDM, so that the UDM knows that the AMF provides services to the terminal. The New AMF includes the SUPI-1 in the registration request.

[0065] Step 25, the New AMF obtains the subscription information corresponding to the SUPI-1 from the UDM.

[0066] Step 26, the New AMF executes the Access and Mobility (AM) Policy Association Establishment / Modification process.

[0067] For example, the PCF provides the URSP (UE Route Selection Policy) information to the AMF, and the URSP information is used for the terminal to decide how to establish a Protocol Data Unit (PDU) session.

[0068] Step 27, the New AMF sends a registration acceptance message to the UE to complete the registration process.

[0069] The URSP information can be sent in the registration acceptance message, or sent to the UE through User Configuration Update (UCU) before or after the registration acceptance message.

[0070] Next, in conjunction with the accompanying drawings, the registration method provided by the embodiments of the present application will be described in detail through some embodiments and their application scenarios.

[0071] Referring to Figure 3 , the embodiments of the present application provide a registration method, as Figure 3 shown, the registration method includes:

[0072] Step 301, the terminal sends a registration request corresponding to the 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 the target feature;

[0073] Step 302, the terminal receives a registration response message from the first network function;

[0074] The target feature includes at least one of the following: dual steer; multiple steer; 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; multiple connection; two SUPI sharing one subscription profile; multiple SUPIs sharing one subscription profile.

[0075] In an embodiment of the present application, at least two unique identifiers associated with the terminal are stored both in the terminal and the network-side device, and these at least two unique identifiers can be recognized as the same terminal or the same subscribed user by the network-side device. The terminal may send a registration request for the first identifier stored, such as SUPI-1. The registration request can be routed to a newly selected first network function, which can be an AMF or a network element having the same function as the AMF. The first network function can determine, according to the registration request, other network functions that provided services to the terminal last time (such as the old AMF), and request the context of the terminal from the other network functions, where the context includes the SUPI-1 of the terminal. Then the first network function can perform an authentication process on the terminal. After authentication, the first network function will register with a 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 having the same function as the UDM.

[0076] Optionally, the values of M and N above can be set according to the actual situation. For example, in some embodiments, M is 4, and 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 above-mentioned Mth-generation mobile communication and Nth-generation mobile communication may 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); dual transmission of the 5th-generation mobile communication and the 6th-generation mobile communication.

[0077] Optionally, the above-mentioned dual transmission can be understood as transmitting service data through 2 3GPP access networks, where each 3GPP access network corresponds to a session (such as the first session or the second session). For example, it includes selecting (steer) from 2 3GPP access networks, switching (switch) between 2 3GPP access networks, or simultaneously using 2 3GPP access networks for split transmission. The dual transmission of the above-mentioned Mth-generation mobile communication and Nth-generation mobile communication can be understood as: transmitting service data through the 3GPP access network corresponding to the Mth-generation mobile communication and the 3GPP access network corresponding to the Nth-generation mobile communication, that is, the 2 3GPP access networks are respectively the 3GPP access network corresponding to the Mth-generation mobile communication and the 3GPP access network corresponding to the Nth-generation mobile communication.

[0078] Optionally, the above-mentioned multi-transmission can be understood as transmitting service data through at least 3 3GPP access networks; for example, it includes selecting (steer) from 3 3GPP access networks, switching (switch) between 3 3GPP access networks, or simultaneously using at least 2 3GPP access networks for split transmission.

[0079] 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.

[0080] The above-mentioned single-contract dual-identification can be understood as one user corresponding to two unique identifiers (such as SUPI), that is, one user's subscription profile corresponds to two unique identifiers; the above-mentioned single-contract multiple-identification can be understood as one user corresponding to multiple unique identifiers, that is, one user's subscription profile corresponds to at least 3 unique identifiers.

[0081] Optionally, after the first network function completes the registration, a registration response message will be sent to the terminal to complete the registration process. The registration response message can be understood as a registration acceptance response message.

[0082] Optionally, a terminal can be understood as a contracted user, and the terminal being associated with at least two unique identifiers can be understood as a contracted user being associated with at least two unique identifiers. Since the first indication information is carried in the registration request to indicate 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, so as to assist the network side device in implementing the registration process of the terminal, and the network side device can better use the at least two unique identifiers to provide services for the terminal.

[0083] In an embodiment of the present application, a registration request corresponding to a first identifier is sent by a terminal, and 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; 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; 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. 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.

[0084] 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 characteristic or indicates that the network does not support the target characteristic.

[0085] In the embodiments of the present application, the above-mentioned 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, it is convenient for the terminal and the network-side device to keep the understanding of whether to use the target feature consistent.

[0086] Optionally, in some embodiments, the method further includes:

[0087] The terminal receives a UE Route Selection Policy (URSP) sent by a second network function, and the UE Route Selection Policy is used to establish a session (such as a PDU session) associated with the target feature.

[0088] It should be noted that the session associated with the target feature can also be understood as the session corresponding to the target feature. That is, this session supports the target feature.

[0089] In the embodiments of the present application, the above-mentioned second network function can be understood as a PCF or a network element having the same function as the PCF function.

[0090] It should be noted that, in the embodiments of the present application, after the first network function is registered with the third network function, the first network function can obtain target information from the third network function. 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. Further, the target information further includes at least one of the subscription information associated with the first identifier and the session information of the second identifier. Among them, the subscription information associated with the first identifier may include information on the terminal subscribing to the target feature, and the above session information may include PDU session information or Public Data Network (PDN) connection information.

[0091] It should be noted that the subscription information associated with the first identifier can be understood as the subscription information corresponding to the first identifier.

[0092] For example, a subscribed user has two unique identifiers, namely the first identifier and the second identifier. When the terminal performs the registration process corresponding to the first identifier, the first network function provides the first identifier to the third network function. Then, in addition to providing the subscription information associated with the first identifier to the first network function, the third network function will also send the second identifier to the first network function. Optionally, it can also send the session information corresponding to the second identifier, and the session information may include a PDU session or a PDN connection.

[0093] Optionally, the first identifier is used for the UE to register in the 5G network, and the second identifier is used for the UE to register in the 4G network; or, the first identifier is used for the UE to register in the 6G network, and the second identifier is used for the UE to register in the 5G network; or, the first identifier is used for the UE to register in the 6G network, and the second identifier is used for the UE to register in the 4G network.

[0094] 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 that, the first network function can execute the AM PolicyAssociation Establishment / Modification process. For example, the first network function provides an indication that the terminal supports the target feature to the second network function, and the second network function provides a URSP rule to the first network function, which contains an indication corresponding to the target feature. Specifically, when enhancing the URSP, the enhanced URSP can be used by the terminal to determine that a session supporting the target feature can be established. For example, when the target feature is dual steer, the terminal determines that a dualsteer session can be established.

[0095] Among them, the enhanced part of the access type of the URSP routing selection component (RSD) in the enhanced URSP is as follows:

[0096] Access type preference: When the terminal establishes a PDU session for a matching application, it indicates the preferred access type (3GPP or non-3GPP or multi-access or the first feature).

[0097] Optionally, the above URSP can be sent to the terminal by the UCU before or after sending the registration response message.

[0098] To better understand this application, the following is illustrated by some examples.

[0099] Refer to Figure 4 , the registration process includes:

[0100] Step 41, the terminal sends a registration request for the saved first identifier, such as SUPI-1, and includes the GUTI saved by the terminal in the registration request. The request is routed to the newly selected AMF, that is, the new AMF;

[0101] The registration request includes the first indication information that the terminal supports the target feature.

[0102] Step 42: The New AMF determines the AMF that provided services to the UE last time, i.e., the old AMF, based on the GUTI, and obtains the context of the terminal from the old AMF. The context contains the SUPI-1 of this UE.

[0103] The GUTI is a temporary identifier corresponding to the SUPI-1 assigned by the old AMF. The new AMF can find the old AMF based on this GUTI, and the old AMF can determine the SUPI-1 based on this GUTI.

[0104] Step 43: The New AMF performs an authentication process on the UE.

[0105] Step 44: The New AMF registers with the UDM, enabling the UDM to know that this AMF provides services to the UE. The New AMF includes the SUPI-1 in the registration request.

[0106] Step 45: The New AMF obtains target information from the UDM. The target information includes at least one of the following:

[0107] The second identifier;

[0108] The PDN connection information corresponding to the second identifier, which may include, for example, the access point name (APN) and the PDN gateway (PDN Gate Way, PWG) identifier (IDentify, ID); the subscription information associated with the first identifier. Among them, the subscription information associated with the first identifier may include: information on the subscribed target characteristics of the terminal.

[0109] It should be noted that the PGW ID can be replaced by the fully qualified domain name (FQDN) of the PGW or the IP address of the PGW.

[0110] Optionally, the AMF saves the association relationship between the first identifier and the second identifier.

[0111] It should be understood that when a subscribed user (i.e., the terminal) has multiple unique identifiers and one of them is the first identifier, the UDM will also send the other unique identifiers to the AMF. For example, a subscribed user has 2 unique identifiers, namely the first identifier and the second identifier. When the UE performs the registration process corresponding to the first identifier and the AMF provides the first identifier to the UDM, the UDM will send the second identifier to the AMF in addition to the subscription information associated with the first identifier, and optionally, further send the session information corresponding to the second identifier (such as including PDU session information or PDN connection information).

[0112] Step 46: The New AMF executes the AM Policy Association Establishment / Modification process.

[0113] For example, the New AMF provides an indication to the PCF that the terminal supports the target feature, and the PCF provides the New AMF with a URSP rule that contains an indication corresponding to the target feature.

[0114] Specifically, when enhancing the URSP, the enhanced URSP can be used by the terminal to determine that a session supporting 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.

[0115] Optionally, the URSP can be sent to the terminal by the UCU before or after sending the registration response message.

[0116] Step 47: The New AMF sends a registration acceptance message to the terminal to complete the registration process. The registration acceptance message contains indication information indicating whether the network supports or does not support the target feature. For example, a target feature confirmation message or a target feature acceptance message.

[0117] Refer to Figure 5 , this embodiment of the present application also provides a registration method, as Figure 5 shown, the registration method includes:

[0118] 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 for indicating that the terminal supports a target feature;

[0119] Step 502: The first network function sends a registration response message to the terminal;

[0120] 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.

[0121] Optionally, the method further includes:

[0122] 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;

[0123] The first network function stores the association relationship between the first identifier and the second identifier.

[0124] Optionally, the registration response message includes second indication information for indicating that the network supports the target feature or the network does not support the target feature.

[0125] Optionally, the target information further includes session information corresponding to the second identifier.

[0126] Optionally, the method further includes:

[0127] 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 the target feature;

[0128] 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;

[0129] The first network function sends the terminal routing selection policy to the terminal.

[0130] Optionally, the first identifier is used for the UE to register in the 5G network, and the second identifier is used for the UE to register in the 4G network; or, the first identifier is used for the UE to register in the 6G network, and the second identifier is used for the UE to register in the 5G network; or, the first identifier is used for the UE to register in the 6G network, and the second identifier is used for the UE to register in the 4G network.

[0131] Refer to Figure 6 , this embodiment of the present application further provides a registration method, as Figure 6 shown, the registration method includes:

[0132] Step 601, 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;

[0133] Step 602, 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;

[0134] 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 subscription dual identifier; single subscription multi-identifier.

[0135] It should be understood that in the embodiments of the present application, the above second indication information is the indication information triggered during the registration process corresponding to the first identifier, and the first identifier is one of at least two unique identifiers associated with the terminal.

[0136] In the registration method provided by the embodiments of the present application, the execution subject may be a registration device. In the embodiments of the present application, taking the registration device executing the registration method as an example, the registration device provided by the embodiments of the present application is described.

[0137] Refer to Figure 7 , the embodiments of the present application also provide a registration device, as Figure 7 shown, the registration device includes:

[0138] A first sending module 701, 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;

[0139] A first receiving module 702, configured to receive a registration response message from a first network function;

[0140] Wherein, the target feature includes at least one of the following: dual transmission; multi - transmission; dual transmission of the M - th generation mobile communication and the N - th generation mobile communication, where M and N are both integers greater than 3 and M and N are different; dual connection; multi - connection; single subscription dual identifier; single subscription multi - identifier.

[0141] Optionally, 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.

[0142] Optionally, the first receiving module 701 is further configured to: receive a terminal routing selection policy sent by a second network function, and the terminal routing selection policy is used to establish a session associated with the target feature.

[0143] Refer to Figure 8 , the embodiments of the present application also provide a registration device, as Figure 8 shown, the registration device includes:

[0144] A second receiving module 801, 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;

[0145] A second sending module 802, configured to send a registration response message to the terminal;

[0146] 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.

[0147] Optionally, the registration response message includes second indication information for indicating that the network supports or does not support the target feature.

[0148] Optionally, the registration device 800 further includes:

[0149] 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 identifier other than the first identifier among the at least two unique identifiers;

[0150] A storage module, configured to save the association relationship between the first identifier and the second identifier.

[0151] Optionally, the target information further includes session information corresponding to the second identifier.

[0152] Optionally, the second sending module 802 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 the target feature;

[0153] The second receiving module 801 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;

[0154] The second sending module 802 is further configured to: send the terminal routing selection policy to the terminal.

[0155] Referring to Figure 9 , an embodiment of the present application further provides a registration device, as Figure 9 shown, the registration device includes:

[0156] A third receiving module 901, configured to receive second indication information from a first network function, where the second indication information is used to indicate that the terminal supports the target feature;

[0157] A third sending module 902, 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;

[0158] 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.

[0159] The registration device in the embodiments of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal or other devices other than terminals. Exemplarily, the terminal may include, but is not limited to, the types of the above-listed terminal 11, and other devices may be a server, a Network Attached Storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0160] The registration device provided in the embodiments of the present application can implement Figures 3 to 6 each process implemented by the method embodiments and achieve the same technical effects. To avoid repetition, details are not described herein again.

[0161] As Figure 10 shown, the embodiments of the present application further provide a communication device 1000, including a processor 1001 and a memory 1002. A program or instruction that can run on the processor 1001 is stored on the memory 1002. When the program or instruction is executed by the processor 1001, each step of the above registration method embodiment is implemented, and the same technical effects can be achieved. To avoid repetition, details are not described herein again.

[0162] The embodiments of the present application further provide a terminal, including a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the steps in the method embodiment as Figure 3 shown. This terminal embodiment corresponds to the above terminal-side method embodiment. Each implementation process and implementation manner of the above method embodiment can be applied to this terminal embodiment, and the same technical effects can be achieved. Specifically, Figure 11 FIG. is a schematic hardware structure diagram of a terminal for implementing the embodiments of the present application.

[0163] The terminal 1100 includes, but is not limited to, at least some components such as 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 a processor 1110.

[0164] Those skilled in the art can understand that the terminal 1100 may further include a power source (such as a battery) for supplying power to each component. The power source may be logically connected to the processor 1110 through a power management system, so as to implement functions such as management of charging, discharging, and power consumption management through the power management system. Figure 11The terminal structure shown does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0165] It should be understood that in the embodiments of the present application, the input unit 1104 may include a Graphics Processing Unit (GPU) 11041 and a microphone 11042. The graphics processor 11041 processes the image data of static pictures or videos 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 at least one of a touch panel 11071 and 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. The 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, a joystick, which will not be elaborated here.

[0166] In the embodiments of the present application, after the radio frequency unit 1101 receives downlink data from a network-side device, it can be transmitted to the processor 1110 for processing; in addition, the radio frequency unit 1101 can send uplink data to the network-side device. Generally, the radio frequency unit 1101 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0167] 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. Among them, the first storage area may store an operating system, application programs or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 1109 may include volatile memory or 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 a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDR SDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM), and a direct rambus random access memory (DRRAM). The memory 1109 in the embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

[0168] The processor 1110 may include one or more processing units; optionally, the processor 1110 integrates an application processor and a modem processor. Among them, the application processor mainly processes operations related to the operating system, user interface, and application programs, etc., and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above modem processor may not be integrated into the processor 1110.

[0169] Among them, the radio frequency unit 1101 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 a target feature; receive a registration response message from a first network function;

[0170] 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 is different from N; dual connection; multi-connection; single subscription dual identification; single subscription multi-identification.

[0171] It can be understood that the implementation processes of the various implementation manners mentioned in this embodiment can refer to the relevant descriptions of the method embodiments on the terminal side and achieve the same or corresponding technical effects. To avoid repetition, they will not be elaborated here.

[0172] This application embodiment also provides a network-side device, including a processor and a communication interface. The communication interface is coupled to the processor, and the processor is configured to run a program or instructions to implement as Figure 5 or Figure 6 the steps shown in the method embodiment. This network-side device embodiment corresponds to the above network-side device method embodiment. Each implementation process and implementation manner of the above method embodiment can be applied to this network-side device embodiment and can achieve the same technical effects.

[0173] Specifically, this application embodiment also provides a network-side device. As Figure 12 shown, this network-side device 1200 includes: a processor 1201, a network interface 1202, and a memory 1203. Among them, the network interface 1202 is, for example, a common public radio interface (CPRI).

[0174] Specifically, the network-side device 1200 of this application embodiment further includes: instructions or programs stored on the memory 1203 and executable on the processor 1201. The processor 1201 calls the instructions or programs in the memory 1203 to execute Figure 8 or Figure 9 the methods executed by the respective modules shown and achieve the same technical effects. To avoid repetition, they will not be elaborated here.

[0175] This application embodiment also provides a readable storage medium. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, they implement the respective processes of the above registration method embodiment and can achieve the same technical effects. To avoid repetition, they will not be elaborated here.

[0176] Wherein, the processor is the processor in the terminal 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 disc, etc. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0177] Another embodiment of the present application further provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is configured to run programs or instructions to implement each process of the above-mentioned registration method embodiment, and can achieve the same technical effects. To avoid repetition, details are not described herein again.

[0178] It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, system chip, chip system, or system-on-chip.

[0179] Another embodiment of the present application further provides a computer program / program product. The computer program / program product is stored in a storage medium. The computer program / program product is executed by at least one processor to implement each process of the above-mentioned registration method embodiment, and can achieve the same technical effects. To avoid repetition, details are not described herein again.

[0180] The embodiments of the present application further provide a wireless communication system, including: a terminal and a network-side device. The terminal can be used to execute the steps of the registration method as described above, and the network-side device can be used to execute the steps of the registration methods on the first network function and the second network function sides as described above.

[0181] It should be noted that in this document, the terms "include", "comprise" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including 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 a reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0182] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general hardware platform, and of course, they can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes several instructions for causing a terminal or a network-side device to execute the methods described in various embodiments of the present application.

[0183] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific implementation manners. The above specific implementation manners are merely illustrative rather than restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms of implementation manners without departing from the purpose of the present application and the scope protected by the claims. All these implementation manners fall within the protection scope of the present application.

Claims

1. A registration method, characterized in that, Including: The terminal sends a registration request corresponding to the 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 the target feature; The terminal receives a registration response message from the 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, characterized in that 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, characterized in that, The method further includes: The terminal receives a terminal routing selection policy sent by the second network function, and the terminal routing selection policy is used to establish a session associated with the target feature.

4. A registration method, characterized in that, Including: The first network function receives a registration request corresponding to the 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 for indicating that the terminal supports the 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, characterized in that The method further includes: The first network function obtains target information from the 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, characterized in that The target information further includes session information corresponding to the second identifier.

8. The method according to claim 6 or 7, characterized in that The method further includes: The first network function sends second indication information to the second network function, and the second indication information is used to indicate that the terminal supports the target feature; The first network function receives a terminal routing selection policy from the second network function, and 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, characterized in that, Including: The second network function receives 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 second network function sends a terminal routing selection policy 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. 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, characterized in that, It includes: 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 for indicating that the terminal supports the 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, characterized in that, 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.

12. The device according to claim 10 or 11, characterized in that, 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, characterized in that, It includes: 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 for indicating that the terminal supports the 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 device according to claim 13, wherein The registration response message includes second indication information for indicating 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, characterized in that, The apparatus further includes: 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 device according to claim 15, characterized in that, The target information further includes session information corresponding to the second identifier.

17. The device according to claim 15 or 16, characterized in that, 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 the 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, characterized in that, It includes: 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 the terminal supports the target feature. A third sending module, configured to send a terminal routing selection policy to the terminal through a 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 is different from N; dual connection; multi-connection; single subscription dual identifier; single subscription multi-identifier.

19. A terminal, characterized in that, It includes a processor and a memory, where the memory stores programs or instructions that can run on the processor, and when the programs or instructions are 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, characterized in that, It includes a processor and a memory, where the memory stores programs or instructions that can run on the processor, and when the programs or instructions are 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, characterized in that, Programs or instructions are stored on the readable storage medium, and when the programs or instructions are executed by a processor, the steps of the registration method according to any one of claims 1 to 9 are implemented.

22. A chip, characterized in that, The chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps of the registration method according to any one of claims 1 to 9.

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