Network access method and apparatus, communication device, and storage medium

Abstract

The embodiments of the present disclosure disclose network access methods and apparatuses, communication devices and storage media. A user equipment (UE) accesses a first network based on a user identity via a first third generation partnership project (3GPP) standard access technology, wherein the UE accesses a second network based on the user identity via a second 3GPP standard access technology, and the first network is different from the second network (201).

Description

Technical Field

[0001] This application relates to, but is not limited to, the field of wireless communication technology, and particularly to network access methods, apparatus, communication devices, and storage media. Background Technology

[0002] The fifth-generation cellular mobile communication system (5GS) can support data connections using multiple access technologies above the RAN layer. This means that two access network paths can be used simultaneously between the UE and the data network to transmit data, and there are two independent user plane tunnels from the RAN to the 5G core network user plane anchor point. For example, the Access Traffic Steering Switch and Splitting (ATSSS) technology supports traffic steering, splitting, and switching between one 3rd Generation Partnership Project (3GPP) standard technology access path and one non-3GPP standard technology access path. Summary of the Invention

[0003] In view of the above, embodiments of this disclosure provide a network access method, apparatus, communication device, and storage medium.

[0004] According to a first aspect of the present disclosure, a network access method is provided, wherein the method is executed by a user equipment (UE), comprising:

[0005] The UE accesses a first network based on a user identity identifier and through a first 3GPP standard access technology, wherein the UE accesses a second network based at least on the user identity identifier and through a second 3GPP standard access technology, wherein the first network is different from the second network.

[0006] In one embodiment, accessing the first network via a first 3GPP standard access technology includes:

[0007] The UE registers with the first network using the first 3GPP standard access technology, wherein the UE registers with the second network using the second 3GPP standard access technology based at least on the user identity identifier.

[0008] In one embodiment, registering the first network via the first 3GPP standard access technology includes:

[0009] The UE sends a first registration request message to the Access and Mobility Management Function (AMF) of the first network through the first 3GPP standard access technology, requesting to register with the first network. The first registration request message carries a secondary registration identifier, which indicates that the UE requests to register with the first network based on the user identity identifier through the first 3GPP standard access technology, and that the UE is registered in the second network based on the user identity identifier through the second 3GPP standard access technology.

[0010] In one embodiment, the method further includes,

[0011] Receive a registration acceptance message sent by the AMF based on the first registration request message, indicating that the registration with the first network has been successful;

[0012] The registration acceptance message is sent by the AMF after registering the UE's registration information to the Unified Data Management (UDM) of the UE's home network through a second registration request message, and based on receiving a registration response message from the UDM. The second registration request message carries the secondary registration identifier.

[0013] In one embodiment, the registration response message is sent by the UDM based on the second registration request message, after determining to maintain the first registration management (RM) context of the UE in the first network and the second RM context of the UE in the second network.

[0014] In one embodiment, the method further includes maintaining a first RM context of the UE in the first network and a second RM context of the UE in the second network.

[0015] In one embodiment, the second network includes one of the following:

[0016] The UE's home network;

[0017] The UE accesses the network.

[0018] In one embodiment, the first network is determined by the UE based on the network identifier in the downlink command;

[0019] And / or,

[0020] The first network is detected by the UE.

[0021] According to a second aspect of the present disclosure, a network access method is provided, wherein the execution by an AMF of a first network includes:

[0022] Service parameters are determined for a user equipment (UE), wherein the service parameters are service parameters for the UE to access a first network based on a user identity identifier through a first 3GPP standard access technology, wherein the UE accesses a second network based at least on the user identity identifier through a second 3GPP standard access technology, and wherein the first network is different from the second network.

[0023] In one embodiment, determining service parameters for the UE includes:

[0024] The determined service parameters for the UE to register with the first network using the first 3GPP standard access technology based on the user identity identifier, wherein the UE registers with the second network using at least the second 3GPP standard access technology based on the user identity identifier.

[0025] In one embodiment, the step of determining service parameters for the UE to register with the first network based on the user identity identifier through the first 3GPP standard access technology includes:

[0026] The system receives a first registration request message sent by the UE based on the user identity identifier, requesting to register with the first network. The first registration request message carries a secondary registration identifier, which indicates that the UE requests to register with the first network through the first 3GPP standard access technology based on the user identity identifier, and that the UE is in a registered state in the second network through the second 3GPP standard access technology based on the user identity identifier.

[0027] In one embodiment, determining the service parameters for the UE to register with the first network based on the user identity identifier through the first 3GPP standard access technology includes:

[0028] Based on the first registration request message, a second registration request message is sent to the UDM of the UE's home network to register the UE's registration information to the UDM; wherein, the second registration request message carries an identifier indicating the secondary registration;

[0029] Receive the registration response message sent by UDM based on the second registration request message.

[0030] In one embodiment, the registration response message is sent by the UDM based on the second registration request message, after determining to maintain the first RM context of the UE in the first network and the second RM context of the UE in the second network.

[0031] In one embodiment, determining the service parameters for the UE to register with the first network based on the user identity identifier through the first 3GPP standard access technology includes:

[0032] When the registration response message is received, a registration acceptance message indicating successful registration with the first network is sent to the UE.

[0033] In one embodiment, the second network includes one of the following:

[0034] The UE's home network;

[0035] The UE accesses the network.

[0036] According to a third aspect of the present disclosure, a network access method is provided, wherein the execution of a UDM belonging to a network includes:

[0037] The system receives a second registration request message sent by the Access and Mobility Management Function (AMF) of the first network. The second registration request message is used to instruct the User Equipment (UE) to register its registration information with the UDM. The second registration request message carries a secondary registration identifier, which is used to instruct the UE to request to register with the first network based on the User Identity Authentication (UISA) via a first 3GPP standard access technology, and to maintain its registration status in the second network based on the User Identity Authentication (UISA) via a second 3GPP standard access technology.

[0038] Based on the second registration request message, maintain the first registration management RM context of the UE in the first network and the second RM context of the UE in the second network.

[0039] In one embodiment, the second registration request message is sent by the AMF after receiving the first registration request message, wherein the first registration request message is sent by the UE to the AMF based on the user identity identifier through the first 3GPP standard access technology, and wherein the first registration request message carries the secondary registration identifier.

[0040] In one embodiment, determining the service parameters for the UE to register with the first network based on the user identity identifier through the first 3GPP standard access technology includes:

[0041] Determine to maintain the first RM context and the second RM context, and send a registration response message to the AMF.

[0042] In one embodiment, the second network includes one of the following:

[0043] The UE's home network;

[0044] The UE accesses the network.

[0045] According to a fourth aspect of the present disclosure, a network access device is provided, disposed within a user equipment (UE); wherein, it includes:

[0046] The transceiver module is configured to access a first network based on a user identity identifier using a first 3GPP standard access technology, wherein the UE accesses a second network based at least on the user identity identifier using a second 3GPP standard access technology, wherein the first network is different from the second network.

[0047] In one embodiment, the transceiver module is specifically configured as follows:

[0048] The UE registers with the first network using the first 3GPP standard access technology, wherein the UE registers with the second network using the second 3GPP standard access technology based at least on the user identity identifier.

[0049] In one embodiment, the transceiver module is configured as follows:

[0050] The UE sends a first registration request message to the AMF of the first network through the first 3GPP standard access technology, requesting to register with the first network. The first registration request message carries a secondary registration identifier, which indicates that the UE requests to register with the first network based on the user identity identifier through the first 3GPP standard access technology, and that the UE is in a registered state in the second network based on the user identity identifier through the second 3GPP standard access technology.

[0051] In one embodiment, the transceiver module is further configured to:

[0052] Receive a registration acceptance message sent by the AMF based on the first registration request message, indicating that the registration with the first network has been successful;

[0053] The registration acceptance message is sent by the AMF after registering the UE's registration information to the UDM of the UE's home network through a second registration request message, and based on receiving a registration response message from the UDM. The second registration request message carries the secondary registration identifier.

[0054] In one embodiment, the registration response message is sent by the UDM based on the second registration request message, after determining to maintain the first RM context of the UE in the first network and the second RM context of the UE in the second network.

[0055] In one embodiment, the apparatus further includes a processing module configured to maintain a first RM context of the UE in the first network and a second RM context of the UE in the second network.

[0056] In one embodiment, the second network includes one of the following:

[0057] The UE's home network;

[0058] The UE accesses the network.

[0059] In one embodiment, the first network is determined by the UE based on the network identifier in the downlink command;

[0060] And / or,

[0061] The first network is detected by the UE.

[0062] According to a fifth aspect of the present disclosure, a network access device is provided, disposed within the AMF of a first network of a user equipment (UE); wherein, it includes:

[0063] The transceiver module is configured to determine service parameters for a user equipment (UE), wherein the service parameters are service parameters for the UE to access a first network based on a user identity identifier through a first 3GPP standard access technology, wherein the UE accesses a second network based at least on the user identity identifier through a second 3GPP standard access technology, and wherein the first network is different from the second network.

[0064] In one embodiment, the transceiver module is specifically configured as follows:

[0065] The determined service parameters for the UE to register with the first network using the first 3GPP standard access technology based on the user identity identifier, wherein the UE registers with the second network using at least the second 3GPP standard access technology based on the user identity identifier.

[0066] In one embodiment, the transceiver module is specifically configured as follows:

[0067] The system receives a first registration request message sent by the UE based on the user identity identifier, requesting to register with the first network. The first registration request message carries a secondary registration identifier, which indicates that the UE requests to register with the first network through the first 3GPP standard access technology based on the user identity identifier, and that the UE is in a registered state in the second network through the second 3GPP standard access technology based on the user identity identifier.

[0068] In one embodiment, the transceiver module is specifically configured as follows:

[0069] Based on the first registration request message, a second registration request message is sent to the UDM of the UE's home network to register the UE's registration information to the UDM; wherein, the second registration request message carries an identifier indicating the secondary registration;

[0070] Receive the registration response message sent by UDM based on the second registration request message.

[0071] In one embodiment, the registration response message is sent by the UDM based on the second registration request message, after determining to maintain the first RM context of the UE in the first network and the second RM context of the UE in the second network.

[0072] In one embodiment, the transceiver module is specifically configured as follows:

[0073] When the registration response message is received, a registration acceptance message indicating successful registration with the first network is sent to the UE.

[0074] In one embodiment, the second network includes one of the following:

[0075] The UE's home network;

[0076] The UE accesses the network.

[0077] According to a sixth aspect of the present disclosure, a network access device is provided, disposed within a UDM of the home network of a user equipment (UE); wherein, it includes:

[0078] The transceiver module is configured to receive a second registration request message sent by the Access and Mobility Management Function (AMF) of the first network. The second registration request message instructs the User Equipment (UE) to register its registration information with the UDM. The second registration request message carries a secondary registration identifier, which instructs the UE to request registration with the first network using a first 3GPP standard access technology based on the user identity identifier, and to maintain its registration status in the second network using a second 3GPP standard access technology based on the user identity identifier. Based on the second registration request message, the module maintains the first Registration Management (RM) context of the UE in the first network and the second RM context of the UE in the second network.

[0079] In one embodiment, the second registration request message is sent by the AMF after receiving the first registration request message, wherein the first registration request message is sent by the UE to the AMF based on the user identity identifier through the first 3GPP standard access technology, and wherein the first registration request message carries the secondary registration identifier.

[0080] In one embodiment, the transceiver module is specifically configured as follows:

[0081] Determine to maintain the first RM context and the second RM context, and send a registration response message to the AMF.

[0082] In one embodiment, the second network includes one of the following:

[0083] The UE's home network;

[0084] The UE accesses the network.

[0085] According to a seventh aspect of the present disclosure, a communication device is provided, including a processor, a memory, and an executable program stored in the memory and executable by the processor, wherein when the processor executes the executable program, it performs the steps of the network access method as described in the first, second, or third aspect.

[0086] According to an eighth aspect of the present disclosure, a storage medium is provided that stores an executable program thereon, wherein the executable program, when executed by a processor, implements the steps of the network access method as described in the first, second, or third aspect.

[0087] According to the network access method, apparatus, communication device, and storage medium provided in this disclosure, a UE accesses a first network based on a user identity identifier via a 3GPP standard access technology. The UE also accesses a second network based at least on the user identity identifier via a second 3GPP standard access technology, wherein the first network is different from the second network. Thus, the UE accesses both the first and second networks based on a single user identity identifier via both the first and second 3GPP standard access technologies, improving network access flexibility and meeting the needs of different communication scenarios. Data from the two networks can be aggregated or used as backups, improving data throughput and data transmission reliability.

[0088] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the embodiments of this disclosure. Attached Figure Description

[0089] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments of the invention.

[0090] Figure 1 This is a schematic diagram illustrating the structure of a wireless communication system according to an exemplary embodiment;

[0091] Figure 2 This is a flowchart illustrating a network access method according to an exemplary embodiment;

[0092] Figure 3 This is a flowchart illustrating a network access method according to an exemplary embodiment;

[0093] Figure 4 This is a flowchart illustrating a network access method according to an exemplary embodiment;

[0094] Figure 5 This is a flowchart illustrating a network access method according to an exemplary embodiment;

[0095] Figure 6 This is a flowchart illustrating a network access method according to an exemplary embodiment;

[0096] Figure 7 This is a block diagram illustrating a network access device according to an exemplary embodiment;

[0097] Figure 8 This is a block diagram illustrating a network access device according to an exemplary embodiment;

[0098] Figure 9This is a block diagram illustrating a network access device according to an exemplary embodiment;

[0099] Figure 10 This is a block diagram illustrating an apparatus for network access according to an exemplary embodiment. Detailed Implementation

[0100] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with those of the present invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the embodiments of the present invention.

[0101] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of this disclosure. The singular forms “a,” “the,” and “the” as used in this disclosure are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0102] It should be understood that although the terms first, second, third, etc., may be used to describe various information in embodiments of this disclosure, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, first information may also be referred to as second information without departing from the scope of embodiments of this disclosure, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to a determination."

[0103] Please refer to Figure 1 This illustration shows a schematic diagram of the structure of a wireless communication system provided in an embodiment of this disclosure. Figure 1 As shown, the wireless communication system is a communication system based on cellular mobile communication technology. The wireless communication system may include: a number of terminals 11 and a number of base stations 12.

[0104] Terminal 11 can be a device that provides voice and / or data connectivity to a user. Terminal 11 can communicate with one or more core networks via a Radio Access Network (RAN). Terminal 11 can be an Internet of Things (IoT) terminal, such as a sensor device, a mobile phone (or "cellular" phone), and a computer with an IoT terminal. For example, it can be a fixed, portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted device. Examples include a station (STA), subscriber unit, subscriber station, mobile station, mobile station, remote station, access point, remote terminal, access terminal, user terminal, user agent, user device, or user equipment (UE). Alternatively, terminal 11 can also be a device in an unmanned aerial vehicle (UAV). Alternatively, terminal 11 can also be a vehicle-mounted device, such as a vehicle computer with wireless communication capabilities, or a wireless communication device connected to an external vehicle computer. Alternatively, terminal 11 can also be a roadside device, such as a street light, traffic light, or other roadside device with wireless communication capabilities.

[0105] Base station 12 can be a network-side device in a wireless communication system. This wireless communication system can be a fourth-generation mobile communication (4G) system, also known as a Long Term Evolution (LTE) system; or it can be a 5G system, also known as a New Radio (NR) system or a 5G NR system. Alternatively, it can be a next-generation system after 5G. In this case, the access network in the 5G system can be called NG-RAN (New Generation-Radio Access Network). Alternatively, it can be an MTC system.

[0106] In this embodiment, base station 12 can be an evolved NB (eNB) used in a 4G system. Alternatively, base station 12 can also be a gNB (gNB) using a centralized-distributed architecture in a 5G system. When base station 12 adopts a centralized-distributed architecture, it typically includes a central unit (CU) and at least two distributed units (DU). The central unit is equipped with a protocol stack of Packet Data Convergence Protocol (PDCP), Radio Link Control (RLC), and Media Access Control (MAC) layers; the distributed units are equipped with a physical (PHY) layer protocol stack. This disclosure does not limit the specific implementation of base station 12.

[0107] Base station 12 and terminal 11 can establish a wireless connection via a wireless air interface. In different implementations, the wireless air interface is a wireless air interface based on the fourth-generation mobile communication network technology (4G) standard; or, the wireless air interface is a wireless air interface based on the fifth-generation mobile communication network technology (5G) standard, such as a new air interface; or, the wireless air interface can also be a wireless air interface based on a next-generation mobile communication network technology standard based on 5G.

[0108] In some embodiments, terminals 11 can also establish E2E (End to End) connections. Examples include V2V (vehicle to vehicle), V2I (vehicle to Infrastructure), and V2P (vehicle to pedestrian) communication scenarios in vehicle-to-everything (V2X) communication.

[0109] In some embodiments, the wireless communication system described above may further include a network management device 13.

[0110] Several base stations 12 are connected to network management device 13. Network management device 13 can be a core network device in a wireless communication system, such as a Mobility Management Entity (MME) in an Evolved Packet Core (EPC). Alternatively, it can be other core network devices, such as a Serving Gateway (SGW), a Public Data Network Gateway (PGW), a Policy and Charging Rules Function (PCRF), or a Home Subscriber Server (HSS). The implementation of network management device 13 is not limited in this embodiment.

[0111] In some scenarios, it is necessary to use two 3GPP standard technologies to access path allocation and / or aggregate traffic, for example:

[0112] 1. Two 3GPP standard technology access paths within the same Public Land Mobile Network (PLMN), for example, one path using Long Term Evolution (LTE) / Evolved Packet Core (EPC) and another path using New Radio (NR) / 5G Core Network (5GC); or two paths using 3GPP Non-Terrestrial Networks (NTN), for example, via Low Earth Orbit (LEO) satellites and Medium Earth Orbit (MEO) / Geosynchronous Earth Orbit (GEO).

[0113] 2. Two different PLMN access paths, or two 3GPP access paths between a PLMN and a non-public network (NPN), for example, one path uses 3GPP NTN to access PLMN-1 and the other path uses 3GPP terrestrial access PLMN-2 (or NPN); it may also include two 3GPP terrestrial access paths using the same radio access technology (RAT) (e.g., NR&NR, NTN&NTN) or different RATs (e.g., NR plus LTE).

[0114] In all embodiments of this disclosure, the 3GPP standard technology access path refers to an access path that conforms to the communication protocol specifications specified by the 3GPP organization.

[0115] In these situations, enabling additional 5GS mechanisms under the control / policy of the Mobile Network Operator (MNO) to provide flexible user plane traffic aggregation, redirection, and switching would be beneficial. These mechanisms can improve access and network resource utilization, capacity, coverage, reliability, and quality of experience (QoE).

[0116] For scenarios involving interoperability between two PLMNs (or PLMN plus NPN), it can be assumed that the two networks are managed by the same MNO or different partner MNOs (with some commercial agreement). In the latter case, the MNO-to-MNO agreement will include appropriate incentives and policies on how to manage and route traffic across the network, which is beyond the scope of this study.

[0117] Terrestrial plus satellite access (single or multiple PLMNs): Additional resources available in the NTN network can be used to extend the capacity / data throughput (Throghput, Tput) of the terrestrial network, and vice versa. Opportunities to use traffic aggregation (or selection / switching) can be based on demand or temporary coverage situations. For example, for UEs arriving at stopover points on trains / cruise ships / airplanes (typically served by NTNs), dual coverage from both NTNs and TNs can be used.

[0118] Traffic aggregation / splitting can be used to extend bandwidth / Tput through multi-satellite access, such as via LEO and MEO / GEO networks. Furthermore, it allows for better control over traffic redirection and switching across different types of satellite access, for example, based on application latency or bandwidth requirements, or discontinuous LEO coverage.

[0119] In specific areas or locations, such as a stadium during periods of high data traffic, the available resources of a local network (NPN or PLMN2) can be used to provide additional capacity for a wide-area PLMN1 network, and vice versa. Similar scenarios may apply to other local environments, such as campuses, businesses, factories, and homes.

[0120] Currently, a UE (one user identity) can register to two PLMNs through one 3GPP standard access path and one non-3GPP standard access path, but it cannot support two 3GPP standard access paths.

[0121] like Figure 2 As shown, this exemplary embodiment provides a network access method that can be executed by a UE of a cellular mobile communication system, including:

[0122] Step 201: Based on the user identity identifier, access the first network through the first 3GPP standard access technology, wherein the UE accesses the second network through the second 3GPP standard access technology at least based on the user identity identifier, wherein the first network is different from the second network.

[0123] A network can identify a unique cellular mobile communication network user through a user identity identifier. User identity identifiers may include, but are not limited to, one of the following: International Mobile Subscriber Identity (IMSI), Subscription Permanent Identifier (SUPI), Globally Unique Temporary UE Identity (GUTI), or a unique account configured by the operator.

[0124] In one possible implementation, a user identity identifier may correspond to a Subscriber Identity Module (SIM). The user identity identifier may include the USIM, which may store the user's identification information. The SIM may include, but is not limited to, the SIM used in 2G, the Universal Subscriber Identity Module (USIM) used in 3G to 5G, and other forms of SIM used in subsequent cellular mobile communication systems. The USIM may include, but is not limited to, at least one of the following: physical USIM and electronic USIM (eUSIM).

[0125] In one possible implementation, the UE can access the first network and the second network based on the user identification information for the user in the USIM.

[0126] In this embodiment, unless otherwise specified, UE access (including registration, access, data transmission, etc.) to the first network and the second network are both based on the same user identity. The first network can be a first 3GPP standard access path using a first 3GPP standard access technology, and the second network can be a second 3GPP standard access path using a second 3GPP standard access technology.

[0127] Here, the first network and the second network can be cellular mobile communication networks. Cellular mobile communication networks include, but are not limited to, at least one of the following: Public Land Mobile Network (PLMN) and Non-Public Network (NPN).

[0128] The first network and the second network can be different types of networks. For example, the first network can be a PLMN and the second network can be an NPN.

[0129] The first network and the second network can be networks of the same type but managed by different MNOs, or they can be two different networks managed by the same MNO. For example, the first network and the second network can be two different PLMNs.

[0130] In one possible implementation, the first 3GPP standard access technology and the second 3GPP standard access technology can be the same radio access technology (RAT). For example, both the first and second 3GPP standard access technologies can be NR, NTN, or LTE, etc.

[0131] In one possible implementation, the first 3GPP standard access technology and the second 3GPP standard access technology can be different access technologies. For example, the first 3GPP standard access technology can be NR, and the second 3GPP standard access technology can be LTE.

[0132] For example, the first 3GPP standard access technology could be a 3GPP terrestrial access technology, and the second 3GPP standard access technology could be a 3GPP NTN. Terrestrial access technology could include access via terrestrial base stations, etc. NTN could include access via Low Earth Orbit (LEO) satellites, Medium Earth Orbit (MEO) satellites, and / or Geosynchronous Earth Orbit (GEO) satellites, etc.

[0133] In one possible implementation, the first 3GPP standard access technology and the second 3GPP standard access technology are different NTN access methods.

[0134] For example, the first 3GPP standard access technology can be access technology via LEO satellite, and the second 3GPP standard access technology can be access technology via MEO satellite.

[0135] Here, the UE can access a first network and a second network respectively through a first 3GPP standard access technology and a second 3GPP standard access technology based on a single user identity. Accessing the first and second networks includes at least one of the following: registering with both networks, and engaging in data communication with both networks. That is, at any given time, the UE can be registered in the first network using the first 3GPP standard access technology and also registered in the second network using the second 3GPP standard access technology, and be able to engage in data communication with both networks.

[0136] For example, a UE can be registered in PLMN1 via base station 1 and in PLMN2 via base station 2, based on a user identity identifier. The UE can then access PLMN1 and PLMN2 via base station 1 and base station 2 respectively.

[0137] Here, the UDM of the UE's home network can determine the service parameters for the UE to access the first and second networks. These service parameters may include, but are not limited to, at least one of the following: data transmitted by the UE during registration with both the first and second networks, maintenance of UE information and control of transmitted data when the UE is simultaneously registered with both networks, etc. This satisfies the UE's requirements for accessing both the first and second networks.

[0138] For example, the home network's UDM can store and maintain context information for the UE in both the first and second networks. This enables the UE to connect to both networks simultaneously. Simultaneous connection can include: the UE registering with both networks, and data communication between the UE and both networks.

[0139] Data communication between the UE and the first network, and data communication between the UE and the second network, can occur simultaneously or in a time-sharing manner.

[0140] It should be understood that the first network and the second network are only used to distinguish between the two networks. Without departing from the scope of the embodiments of this disclosure, the first network may also be referred to as the second network, and the second network may also be referred to as the first network.

[0141] In one possible implementation, the UE can register with two networks sequentially or simultaneously. For example, the UE can register with the first network first and then with the second network; or the UE can register with the second network first and then with the first network.

[0142] In this embodiment, the example is that the UE can first register to the second network and then register to the first network.

[0143] After a UE registers with the second network, it can initiate access to the first network, such as registration. The AMF (Application Context) of the first network can determine the UE's service parameters. These service parameters may include, but are not limited to, at least one of the following: data transmitted by the UE during registration with both the first and second networks; maintenance of UE information and control of transmitted data when the UE is simultaneously registered with both networks. This satisfies the UE's access requirements to both networks. For example, when the AMF determines that the UE has registered with the second network and the UE initiates access to the first network, it can indicate to the core network element that the UE has registered with the second network; or, the UE may have two context information sets, one corresponding to the first network and the other to the second network.

[0144] In one embodiment, the second network includes one of the following:

[0145] The UE's home network;

[0146] The UE accesses the network.

[0147] In one possible implementation, the second network can be the UE's home network (e.g., hPLMN). The UE can first register with its home network and then access the first network based on its user identity. The UE's context information for both the first and second networks can be stored in the UE's home network (e.g., hPLMN).

[0148] In one possible implementation, the second network can be the UE's roaming access network (e.g., vPLMN). The UE can first register with the access network and then access the first network based on its user identity. The UE's context information for both the first and second networks can be stored in the UE's home network (e.g., hPLMN).

[0149] The UE can simultaneously access both the first and second networks, meeting the needs of different application scenarios. For example, traffic from the first and second networks can be aggregated to improve data throughput. Even when the communication quality of one network is poor, data transmission can still be maintained through the other network, improving data transmission reliability.

[0150] In this way, the UE, based on a single user identity, accesses the first and second 3GPP standard access technologies respectively, thereby improving the flexibility of network access and meeting the needs of different communication scenarios. Data from the two networks can be aggregated or used as backups for each other, improving data throughput and data transmission reliability.

[0151] In one embodiment, accessing the first network via a first 3GPP standard access technology includes:

[0152] The UE registers with the first network using the first 3GPP standard access technology, wherein the UE registers with the second network using the second 3GPP standard access technology based at least on the user identity identifier.

[0153] In one possible approach, the UE can register with both a first network and a second network simultaneously using the same user identity (user ID) and a first 3GPP standard access technology. That is, the UE can be registered in both the first and second networks at the same time, based on the same user identity (which may, for example, be stored in the same SIM card).

[0154] Here, registering simultaneously with the first network and the second network can mean that the UE initiates registration with both networks at the same time; or it can mean registering with one network first and then registering with the other network.

[0155] In one possible implementation, the UE can first register to the second network, and then register to the first network based on the same user identity.

[0156] During the process of UE registration to the first network and the second network, the home network's UDM can determine the context of the first network and the second network respectively, so as to enable the UE to register to the first network and the second network simultaneously.

[0157] The AMF (Active Information Function) of the first network can determine whether the UE has already registered in the second network. If the UE has already registered in the second network, the AMF of the first network can instruct the core network (such as the core network of the home network) to allow the UE to request simultaneous registration in both the first and second networks. The AMF of the first network can also request authentication from the core network to determine whether simultaneous registration in both networks is permitted. Furthermore, if the core network (such as the core network of the home network) allows the UE to register in both networks using the same SIM card, the AMF of the first network can also transmit data for UE registration in the first network.

[0158] In one embodiment, accessing the first network via the first 3GPP standard access technology includes:

[0159] The UE sends a first registration request message to the AMF of the first network through the first 3GPP standard access technology, requesting to register with the first network. The first registration request message carries a secondary registration identifier, which indicates that the UE requests to register with the first network based on the user identity identifier through the first 3GPP standard access technology, and that the UE is in a registered state in the second network based on the user identity identifier through the second 3GPP standard access technology.

[0160] A UE can first register to a second network, and then register to a first network based on the same user identity. The UE can send a first registration request message to the AMF (Access Provider Function) of the first network. This first registration request message may carry a secondary registration identifier, indicating that the UE, having already registered to the second network using the second 3GPP standard access technology, is requesting to register to the first network using the first 3GPP standard access technology. In other words, the UE can be registered in both the first and second networks simultaneously.

[0161] In one possible implementation, the UE can send a registration request message to the AMF via an access network (such as NG-RAN) in a selected first network. The registration request message may carry a secondary registration identifier, indicating that the UE is performing secondary registration.

[0162] In one possible implementation, the UE, the second network, the application, and / or a specific service can trigger the UE to initiate registration with the first network after registering with the second network.

[0163] In one embodiment,

[0164] The first network is determined by the UE based on the network identifier in the downlink command;

[0165] And / or,

[0166] The first network is detected by the UE.

[0167] Before registering to the first network, the UE can select the first network it needs to access.

[0168] In one possible implementation, the first network can be indicated by a downlink command sent to the UE from the network side, such as the network side of the second network. The downlink command may carry the network identifier of the first network. The UE determines the first network to register with based on the downlink command.

[0169] In one possible implementation, the first network can be detected by the UE. For example, it could be detected by the UE during random access procedures when it uses a first 3GPP standard access technology to monitor the network.

[0170] For example, the first network can broadcast via base stations and / or satellites, such as broadcasting synchronization signal blocks (SSBs). The UE can listen to the SSBs to discover the first network.

[0171] In one possible implementation, the second network can be the home network. The UE registers with the home network during initial random access and determines and registers with the first network based on external triggers or triggers from the UE itself.

[0172] In one possible implementation, the second network can be a roaming access network. The UE registers with the home network during initial random access and with the access network during roaming. After the UE accesses the access network, it can register with the first network based on the UE, the second network, the application, and / or a specific service, while still registered with the second network.

[0173] like Figure 3 As shown, this exemplary embodiment provides a network access method that can be executed by a UE of a cellular mobile communication system, including:

[0174] Step 301: Receive a registration acceptance message sent by the AMF based on the first registration request message, indicating that the registration with the first network has been successful;

[0175] The registration acceptance message is sent by the AMF after registering the UE's registration information to the UDM of the UE's home network through a second registration request message, and based on receiving a registration response message from the UDM. The second registration request message carries the secondary registration identifier.

[0176] Step 301 can be performed alone or in combination with step 201.

[0177] After receiving the first registration request message, the AMF of the first network can send the UE's registration information, such as the UE's Connection Management (CM) context, to the UDM of the UE's home network in a second registration request message. The second registration request message may carry a secondary registration identifier, instructing the UE to perform secondary registration, that is, to register with the first network after registering with the second network.

[0178] When the home network's UDM receives a second registration request message from the first network's AMF, if the UE is allowed to register a second time, the home network's UDM can return a registration response message to the first network's AMF, indicating that the UE is allowed to register a second time.

[0179] After receiving the registration response message, the AMF of the first network can send a registration acceptance message to the UE, indicating successful registration with the first network. The registration acceptance message may also carry parameters of the first network's first 3GPP standard access technology.

[0180] In one embodiment, the registration response message is sent by the UDM based on the second registration request message, after determining to maintain the first RM context of the UE in the first network and the second RM context of the UE in the second network.

[0181] During the process of a UE registering to a second network (including the home network or the access network), the home network's UDM can store and maintain the UE's second RM context.

[0182] When the home network's UDM receives a second registration request message from the first network's AMF, if the UE is allowed to register a second time, the home network's UDM can determine the UE's first RM context in the first network based on the UE's registration information (such as CM context). It also determines to maintain both the first and second RM contexts simultaneously.

[0183] In one embodiment, the method further includes maintaining a first RM context of the UE in the first network and a second RM context of the UE in the second network.

[0184] After receiving the registration acceptance message, the UE can maintain a first RM context and a second RM context. This allows the UE to simultaneously access the first network through a first 3GPP standard access technology and access the second network through a second 3GPP standard access technology.

[0185] like Figure 4 As shown, this exemplary embodiment provides a network access method that can be executed by the AMF of a first network, including:

[0186] Step 401: Determine service parameters for the UE, wherein the service parameters are service parameters for the UE to access the first network based on the user identity identifier through the first 3GPP standard access technology; wherein the UE accesses the second network at least based on the user identity identifier through the second 3GPP standard access technology, wherein the first network is different from the second network.

[0187] The limitations on the technical solutions implemented by the UE are the same as those in steps 201 and 301, and will not be repeated here.

[0188] In one possible implementation, the UE can first register to the second network, and then register to the first network based on the same user identity.

[0189] During the process of UE registration to the first network and the second network, the home network's UDM can determine the context of the first network and the second network respectively, so as to enable the UE to register to the first network and the second network simultaneously.

[0190] The AMF (Active Information Function) of the first network can determine whether the UE has already registered in the second network. If the UE has already registered in the second network, the AMF of the first network can instruct the core network (such as the core network of the home network) to allow the UE to request simultaneous registration in both the first and second networks. The AMF of the first network can also request authentication from the core network to determine whether simultaneous registration in both networks is permitted. Furthermore, if the core network (such as the core network of the home network) allows the UE to register in both networks using the same SIM card, the AMF of the first network can also transmit data for UE registration in the first network.

[0191] In one embodiment, determining service parameters for the UE includes:

[0192] The system receives a first registration request message sent by the UE based on the user identity identifier, requesting to register with the first network. The first registration request message carries a secondary registration identifier, which indicates that the UE requests to register with the first network based on the user identity identifier through the first 3GPP standard access technology, and that the UE is in a registered state in the second network based on the user identity identifier through the second 3GPP standard access technology.

[0193] A UE can first register to a second network, and then register to a first network based on the same user identity. The UE can send a first registration request message to the AMF (Access Provider Function) of the first network. This first registration request message may carry a secondary registration identifier, indicating that the UE, having already registered to the second network using the second 3GPP standard access technology, is requesting to register to the first network using the first 3GPP standard access technology. In other words, the UE can be registered in both the first and second networks simultaneously.

[0194] The limitations on the technical solutions implemented by the UE, the AMF of the first network, and the UDM of the second network are the same as in steps 201 and 301, and will not be repeated here. Figure 5As shown, this exemplary embodiment provides a network access method that can be executed by the UDM of the UE's home network, including:

[0195] Step 501: Receive a second registration request message sent by the AMF of the first network, wherein the second registration request message is used to instruct the user equipment (UE) to register its registration information to the UDM, wherein the second registration request message carries a secondary registration identifier, wherein the secondary registration identifier is used to instruct the UE to request to register to the first network based on the user identity identifier through a first 3GPP standard access technology, and to maintain the registration status in the second network based on the user identity identifier through a second 3GPP standard access technology; based on the second registration request message, maintain the first RM context of the UE in the first network and the second RM context of the UE in the second network.

[0196] The limitations on the technical solution executed by the UE are the same as those in steps 201, 301, and 401, and will not be repeated here. Similarly, the limitations on the technical solution executed by the AMF of the first network are the same as those in steps 201, 301, and 401, and will not be repeated here.

[0197] In one possible approach, the UE can register with both a first network and a second network simultaneously using the same user identity (SIM card). That is, the UE can be registered in both the first and second networks at the same time.

[0198] Here, registering simultaneously with the first network and the second network can mean that the UE initiates registration with both networks at the same time; or it can mean registering with one network first and then registering with the other network.

[0199] In one possible implementation, the UE can first register to the second network, and then register to the first network based on the same user identity.

[0200] During the process of UE registration to the first network and the second network, the home network's UDM can determine the context of the first network and the second network respectively, so as to enable the UE to register to the first network and the second network simultaneously.

[0201] The AMF (Active Information Function) of the first network can determine whether the UE has already registered in the second network. If the UE has already registered in the second network, the AMF of the first network can instruct the core network (such as the core network of the home network) to allow the UE to request simultaneous registration in both the first and second networks. The AMF of the first network can also request authentication from the core network to determine whether simultaneous registration in both networks is permitted. Furthermore, if the core network (such as the core network of the home network) allows the UE to register in both networks using the same SIM card, the AMF of the first network can also transmit data for UE registration in the first network.

[0202] The following provides a specific example in conjunction with any of the above embodiments:

[0203] In roaming scenarios, the UE first accesses the network, i.e., network-2 (second network), and then registers with network-1 (first network). For example... Figure 6 The specific steps include:

[0204] Step 601: The UE performs network selection and registration with Network-2 according to the roaming procedure. The AMF of Network-2 sends a second registration request message to the UDM of the home network (such as HPLMN) to register the UE with Network-2.

[0205] Step 602: The UE decides to trigger secondary registration with network-1 (network-1 can be vPLMN, NPN, NTN, etc.). For example, the UE can trigger secondary registration with network-1 based on a specific service / application. Secondary registration can occur when the UE registers with network-2 and simultaneously registers with network-1.

[0206] Step 603: The UE performs network selection to select network-1 using the following two possible options:

[0207] 1. Select network-1 based on the upper-layer instruction. The upper-layer instruction includes the target network identifier, which is the network identifier of network-1.

[0208] 2. Define a secondary network selection process, reusing the normal network selection process, and only exclude registered networks and equivalent networks.

[0209] Step 604: The UE sends a first registration request message to the AMF through the NG-RAN of the selected network-1, including a secondary registration identifier, instructing the UE to perform secondary registration with network-1.

[0210] Step 605: The AMF in Network-1 registers the registration message (such as the CM context) with the UDM of the home network.

[0211] Step 606: The home network receives the second registration request message with a secondary registration identifier. The UDM maintains the RM context for the 3GPP access types of Network-1 and Network-2 respectively.

[0212] Step 607: The home network's UDM sends a registration response message to the AMF in network-1.

[0213] Step 608: The AMF sends a registration acceptance message to the UE, including 3GPP access parameters. The UE maintains RM contexts for 3GPP access in Network-1 and 3GPP access in Network-2 respectively.

[0214] For non-roaming scenarios, the UE directly registers with the HPLMN. The remaining processes are similar to steps X02 to X08, and will not be repeated here.

[0215] This invention also provides a network access device, such as... Figure 7 As shown, in a UE used in cellular mobile wireless communication, the device 100 includes:

[0216] The transceiver module 110 is configured to access a first network based on a user identity identifier through a first 3GPP standard access technology, wherein the UE accesses a second network based at least on the user identity identifier through a second 3GPP standard access technology, wherein the first network is different from the second network.

[0217] In one embodiment, the transceiver module 110 is specifically configured as follows:

[0218] The UE registers with the first network using the first 3GPP standard access technology, wherein the UE registers with the second network using the second 3GPP standard access technology based at least on the user identity identifier.

[0219] In one embodiment, the transceiver module 110 is configured as follows:

[0220] The UE sends a first registration request message to the AMF of the first network through the first 3GPP standard access technology, requesting to register with the first network. The first registration request message carries a secondary registration identifier, which indicates that the UE requests to register with the first network based on the user identity identifier through the first 3GPP standard access technology, and that the UE is in a registered state in the second network based on the user identity identifier through the second 3GPP standard access technology.

[0221] In one embodiment, the transceiver module 110 is further configured to:

[0222] Receive a registration acceptance message sent by the AMF based on the first registration request message, indicating that the registration with the first network has been successful;

[0223] The registration acceptance message is sent by the AMF after registering the UE's registration information to the UDM of the UE's home network through a second registration request message, and based on receiving a registration response message from the UDM. The second registration request message carries the secondary registration identifier.

[0224] In one embodiment, the registration response message is sent by the UDM based on the second registration request message, after determining to maintain the first RM context of the UE in the first network and the second RM context of the UE in the second network.

[0225] In one embodiment, the apparatus further includes a processing module 120 configured to maintain a first RM context of the UE in the first network and a second RM context of the UE in the second network.

[0226] In one embodiment, the second network includes one of the following:

[0227] The UE's home network;

[0228] The UE accesses the network.

[0229] In one embodiment, the first network is determined by the UE based on the network identifier in the downlink command;

[0230] And / or,

[0231] The first network is detected by the UE.

[0232] This invention also provides a network access device, such as... Figure 8 As shown, in the AMF applied to the first network, the device 200 includes:

[0233] The transceiver module 210 is configured to determine service parameters for a user equipment (UE), wherein the service parameters are service parameters for the UE to access a first network based on a user identity identifier through a first 3GPP standard access technology, wherein the UE accesses a second network based at least on the user identity identifier through a second 3GPP standard access technology, and wherein the first network is different from the second network.

[0234] In one embodiment, the transceiver module 210 is specifically configured as follows:

[0235] The determined service parameters for the UE to register with the first network using the first 3GPP standard access technology based on the user identity identifier, wherein the UE registers with the second network using at least the second 3GPP standard access technology based on the user identity identifier.

[0236] In one embodiment, the transceiver module 210 is specifically configured as follows:

[0237] The system receives a first registration request message sent by the UE based on the user identity identifier, requesting to register with the first network. The first registration request message carries a secondary registration identifier, which indicates that the UE requests to register with the first network through the first 3GPP standard access technology based on the user identity identifier, and that the UE is in a registered state in the second network through the second 3GPP standard access technology based on the user identity identifier.

[0238] In one embodiment, the transceiver module 210 is specifically configured as follows:

[0239] Based on the first registration request message, a second registration request message is sent to the UDM of the UE's home network to register the UE's registration information to the UDM; wherein, the second registration request message carries an identifier indicating the secondary registration;

[0240] Receive the registration response message sent by UDM based on the second registration request message.

[0241] In one embodiment, the registration response message is sent by the UDM based on the second registration request message, after determining to maintain the first RM context of the UE in the first network and the second RM context of the UE in the second network.

[0242] In one embodiment, the transceiver module 210 is specifically configured as follows:

[0243] When the registration response message is received, a registration acceptance message indicating successful registration with the first network is sent to the UE.

[0244] In one embodiment, the second network includes one of the following:

[0245] The UE's home network;

[0246] The UE accesses the network.

[0247] This invention also provides a network access device, such as... Figure 9 As shown, in a UDM applied to a home network, the device 300 includes:

[0248] The transceiver module 310 is configured to receive a second registration request message sent by the Access and Mobility Management Function (AMF) of the first network. The second registration request message instructs the User Equipment (UE) to register its registration information with the UDM. The second registration request message carries a secondary registration identifier, which instructs the UE to request registration with the first network using a first 3GPP standard access technology based on the user identity identifier, and to maintain its registration status in the second network using a second 3GPP standard access technology based on the user identity identifier. Based on the second registration request message, the module maintains the first Registration Management (RM) context of the UE in the first network and the second RM context of the UE in the second network.

[0249] In one embodiment, the second registration request message is sent by the AMF after receiving the first registration request message, wherein the first registration request message is sent by the UE to the AMF based on the user identity identifier through the first 3GPP standard access technology, and wherein the first registration request message carries the secondary registration identifier.

[0250] In one embodiment, the transceiver module 310 is specifically configured as follows:

[0251] Determine to maintain the first RM context and the second RM context, and send a registration response message to the AMF.

[0252] In one embodiment, the second network includes one of the following:

[0253] The UE's home network;

[0254] The UE accesses the network.

[0255] In an exemplary embodiment, transceiver module 110, processing module 120, transceiver module 210, and transceiver module 310 may be implemented by one or more central processing units (CPUs), graphics processing units (GPUs), baseband processors (BPs), application-specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontrollers (MCUs), microprocessors, or other electronic components to perform the aforementioned method.

[0256] Figure 10 This is a block diagram illustrating a device 3000 for network access according to an exemplary embodiment. For example, device 3000 may be a mobile phone, computer, digital broadcasting terminal, messaging device, game console, tablet device, medical device, fitness equipment, personal digital assistant, etc.

[0257] Reference Figure 10 The device 3000 may include one or more of the following components: processing component 3002, memory 3004, power supply component 3006, multimedia component 3008, audio component 3010, input / output (I / O) interface 3012, sensor component 3014, and communication component 3016.

[0258] Processing component 3002 typically controls the overall operation of device 3000, such as operations associated with display, telephone calls, data communication, camera operation, and recording. Processing component 3002 may include one or more processors 3020 to execute instructions to complete all or part of the steps of the methods described above. Furthermore, processing component 3002 may include one or more modules to facilitate interaction between processing component 3002 and other components. For example, processing component 3002 may include a multimedia module to facilitate interaction between multimedia component 3008 and processing component 3002.

[0259] Memory 3004 is configured to store various types of data to support the operation of device 3000. Examples of this data include instructions for any application or method operating on device 3000, contact data, phonebook data, messages, pictures, videos, etc. Memory 3004 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0260] Power supply component 3006 provides power to various components of device 3000. Power supply component 3006 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to device 3000.

[0261] Multimedia component 3008 includes a screen that provides an output interface between device 3000 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of touch or swipe actions but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 3008 includes a front-facing camera and / or a rear-facing camera. When device 3000 is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0262] Audio component 3010 is configured to output and / or input audio signals. For example, audio component 3010 includes a microphone (MIC) configured to receive external audio signals when device 3000 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 3004 or transmitted via communication component 3016. In some embodiments, audio component 3010 also includes a speaker for outputting audio signals.

[0263] I / O interface 3012 provides an interface between processing component 3002 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, start buttons, and lock buttons.

[0264] Sensor assembly 3014 includes one or more sensors for providing state assessments of various aspects of device 3000. For example, sensor assembly 3014 may detect the on / off state of device 3000, the relative positioning of components such as the display and keypad of device 3000, changes in the position of device 3000 or a component of device 3000, the presence or absence of user contact with device 3000, the orientation or acceleration / deceleration of device 3000, and temperature changes of device 3000. Sensor assembly 3014 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 3014 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 3014 may also include an accelerometer, a gyroscope, a magnetometer, a pressure sensor, or a temperature sensor.

[0265] Communication component 3016 is configured to facilitate wired or wireless communication between device 3000 and other devices. Device 3000 can access wireless networks based on communication standards, such as Wi-Fi, 2G, or 3G, or combinations thereof. In one exemplary embodiment, communication component 3016 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 3016 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0266] In an exemplary embodiment, the apparatus 3000 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the methods described above.

[0267] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 3004 including instructions, which can be executed by a processor 3020 of the device 3000 to perform the above-described method. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0268] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the embodiments of the invention that follow the general principles of the embodiments of the invention and include common knowledge or customary techniques in the art not disclosed in this disclosure. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of the embodiments of the invention are indicated by the following claims.

[0269] It should be understood that the embodiments of the present invention are not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from their scope. The scope of the embodiments of the present invention is limited only by the appended claims.

Claims

1. A network access method, wherein, Executed by the user equipment (UE), including: The UE accesses the first network based on the user identity identifier and through the first 3GPP standard access technology, wherein the UE accesses the second network based on at least the user identity identifier and through the second 3GPP standard access technology, wherein the first network is different from the second network; The access to the first network via the first and third generation partnership program (3GPP) standard access technologies includes: When the UE registers with the second network based on the user identity identifier through the second 3GPP standard access technology, a first registration request message requesting registration with the first network is sent to the AMF of the first network through the first 3GPP standard access technology. The first registration request message carries a secondary registration identifier, which indicates that the UE requests to register with the first network based on the user identity identifier through the first 3GPP standard access technology, and that the UE is in a registered state in the second network based on the user identity identifier through the second 3GPP standard access technology. The first registration request message is also used by the AMF to send a second registration request message to the UDM within the UE's home network, the second registration request message carrying the secondary registration identifier. The method further includes: The system receives a registration acceptance message from the AMF, which indicates successful registration to the first network. The registration acceptance message is sent by the AMF upon receiving a registration response message from the UDM, which is sent by the UDM based on the second registration request message to determine whether to maintain the first registration management context of the UE in the first network and the second RM context of the UE in the second network.

2. The method according to claim 1, wherein, The method further includes maintaining a first RM context of the UE in the first network and a second RM context of the UE in the second network.

3. The method according to claim 1 or 2, wherein, The second network includes one of the following: The UE's home network; The UE accesses the network.

4. The method according to claim 1 or 2, wherein, The first network is determined by the UE based on the network identifier in the downlink command; And / or, The first network is detected by the UE.

5. A network access method, wherein, The execution of the Access and Mobility Management Function (AMF) of the first network includes: Service parameters are determined for a user equipment (UE), wherein the service parameters are service parameters for the UE to access a first network based on a user identity identifier through a first 3GPP standard access technology, wherein the UE accesses a second network based at least on the user identity identifier through a second 3GPP standard access technology, wherein the first network is different from the second network; The process of determining service parameters for the user equipment (UE) includes: The system receives a first registration request message sent by the UE based on the user identity identifier, requesting to register with the first network. The first registration request message is sent when the UE registers with the second network based on the user identity identifier through a second 3GPP standard access technology. The first registration request message carries a secondary registration identifier, which indicates that the UE requests to register with the first network based on the user identity identifier through the first 3GPP standard access technology, and that the UE is in a registered state in the second network based on the user identity identifier through the second 3GPP standard access technology. Based on the first registration request message, a second registration request message is sent to the UDM of the UE's home network; wherein the second registration request message carries the secondary registration identifier; Receive a registration response message sent by UDM based on the second registration request message, wherein the registration response message is sent by UDM based on the second registration request message to determine and maintain the first registration management RM context of the UE in the first network and the second RM context of the UE in the second network; Send a registration acceptance message to the UE indicating that registration with the first network has been successful.

6. The method according to claim 5, wherein, The second network includes one of the following: The UE's home network; The UE accesses the network.

7. A network access method, wherein, The execution of the Unified Data Management (UDM) function of the network to which the network belongs includes: The system receives a second registration request message sent by the Access and Mobility Management Function (AMF) of the first network. The second registration request message is used to instruct the User Equipment (UE) to register its registration information with the UDM. The second registration request message carries a secondary registration identifier, which is used to instruct the UE to request to register with the first network based on its User Identity Authentication (UISA) via a first 3GPP standard access technology, and to maintain its registration status in the second network based on its UISA via a second 3GPP standard access technology. Based on the second registration request message, maintain the first registration management RM context of the UE in the first network and the second RM context of the UE in the second network; Determine to maintain the first RM context and the second RM context, and send a registration response message to the AMF.

8. The method according to claim 7, wherein, The second registration request message is sent by the AMF after receiving the first registration request message. The first registration request message is sent by the UE to the AMF based on the user identity identifier through the first 3GPP standard access technology. The first registration request message carries the secondary registration identifier.

9. The method according to claim 7 or 8, wherein, The second network includes one of the following: The UE's home network; The UE accesses the network.

10. A network access device, disposed within a user equipment (UE); wherein, include: The transceiver module is configured to access a first network based on a user identity identifier via a first 3GPP standard access technology. The UE also accesses a second network via a second 3GPP standard access technology, at least based on the user identity identifier. The first network is different from the second network. Accessing the first network via the first 3GPP standard access technology includes: when the UE registers with the second network via the second 3GPP standard access technology based on the user identity identifier, sending a first registration request message to the AMF of the first network via the first 3GPP standard access technology, requesting registration with the first network. The first registration request message carries a secondary registration identifier, indicating that the UE requests to register with the first network via the first 3GPP standard access technology based on the user identity identifier, and that the UE is registered in the second network via the second 3GPP standard access technology based on the user identity identifier. The first registration request message is also used by the AMF to send a second registration request message to the UDM within the UE's home network, the second registration request message carrying the secondary registration identifier. The transceiver module is further configured to receive a registration acceptance message sent by the AMF, the registration acceptance message being used to indicate successful registration to the first network; the registration acceptance message is sent by the AMF upon receiving a registration response message sent by the UDM, the registration response message being sent by the UDM based on the second registration request message to determine the maintenance of the first registration management RM context of the UE in the first network and the second RM context of the UE in the second network.

11. A network access device, disposed within the AMF of a first network of a user equipment (UE); wherein, include: The transceiver module is configured to determine access service parameters for a user equipment (UE) to access a first network using a first 3GPP standard access technology based on a user identity identifier. The UE accesses a second network using a second 3GPP standard access technology, at least based on the user identity identifier. The first network is different from the second network. The process of determining access service parameters for the UE to access the first network using the first 3GPP standard access technology based on the user identity identifier includes: receiving a first registration request message sent by the UE based on the user identity identifier, requesting to register with the first network. The first registration request message is sent when the UE registers with the second network using the second 3GPP standard access technology based on the user identity identifier. The first registration request message carries a secondary registration identifier, which indicates that the UE requests to register with the first network using the first 3GPP standard access technology based on the user identity identifier, and that the UE is registered in the second network using the second 3GPP standard access technology based on the user identity identifier. The transceiver module is further configured to: send a second registration request message to the UDM of the UE's home network based on the first registration request message; wherein the second registration request message carries the secondary registration identifier; receive a registration response message sent by the UDM based on the second registration request message, wherein the registration response message is sent by the UDM based on the second registration request message to determine and maintain the first registration management RM context of the UE in the first network and the second RM context of the UE in the second network; and send a registration acceptance message to the UE indicating successful registration to the first network.

12. A network access device, disposed within the UDM of the home network of a user equipment (UE); wherein, include: The transceiver module is configured to receive a second registration request message sent by the Access and Mobility Management Function (AMF) of the first network, wherein the second registration request message is used to instruct the User Equipment (UE) to register its registration information with the UDM, wherein the second registration request message carries a secondary registration identifier, wherein the secondary registration identifier is used to instruct the UE to request registration with the first network based on its User Identity Token (UIToken) via a first 3GPP standard access technology, and to maintain its registration status in the second network based on its UIToken via a second 3GPP standard access technology; based on the second registration request message, maintain the first Registration Management Context (RM) context of the UE in the first network and the second RM context of the UE in the second network; determine whether to maintain the first RM context and the second RM context, and send a registration response message to the AMF.

13. A communication device, comprising a processor, a memory, and an executable program stored in the memory and executable by the processor, wherein, When the processor runs the executable program, it performs the steps of the network access method as described in any one of claims 1 to 4, 5 to 6, or 7 to 9.

14. A storage medium having an executable program stored thereon, wherein, When the executable program is executed by a processor, it implements the steps of the network access method as described in any one of claims 1 to 4, 5 to 6, or 7 to 9.

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