CN117221868A - Network registration method, device and readable storage medium - Google Patents

Abstract

The application discloses a network registration method, a device and a readable storage medium, relates to the technical field of communication, and realizes network registration in a network sharing scene. The method comprises the following steps: acquiring a registration request message of a terminal device, wherein the registration request message comprises a target public land mobile network identifier (PLMN ID) and a user hidden identifier (SUCI), the SUCI comprises a home public land mobile network identifier (HPLMN ID), and the terminal device is positioned in a first PLMN network coverage range; if the target PLMN ID and the HPLMN ID belong to the second PLMN network and the terminal equipment has target subscription data, registering the terminal equipment in the second PLMN network; the target subscription data is used for indicating that the terminal equipment has network sharing service, and the second PLMN network is different from the first PLMN network.

Description

Network registration method, device and readable storage medium

Technical Field

The embodiment of the application relates to the technical field of communication, in particular to a network registration method, a network registration device and a readable storage medium.

Background

In an indirect network sharing scenario, the sharing base station of the sharing operator may broadcast, for the scenario, a public land mobile network (public land mobile network, PLMN) Identity (ID) for the core network of the other operator to which it is connected, respectively, the PLMN ID being the same as the next generation radio access network (NG Radio Access Network, NG-RAN) broadcast of the other operator's home network.

When a User Equipment (UE) belonging to another operator initiates network registration in a shared area covered by a shared operator, if a selected PLMN ID sent in a registration request is that a home public land mobile network (home public land mobile network, HPLMN) ID belongs to the same operator as an HPLMN ID carried in a SIM card of the UE, an access and mobility management function (Access and Mobility Management Function, AMF) network element of the shared operator determines that the UE is a home network UE, so that the AMF cannot correctly route corresponding signaling and data to the home network, resulting in registration failure, and the UE cannot access the shared network.

Disclosure of Invention

The application provides a network registration method, a device and a readable storage medium, which are used for realizing network registration in a network sharing scene.

In order to achieve the above purpose, the application adopts the following technical scheme:

in a first aspect, a network registration method is provided, applied to an AMF network element in a first PLMN network, the method including: acquiring a registration request message of a terminal device, wherein the registration request message comprises a target public land mobile network identifier (PLMN ID) and a user hidden identifier (SUCI), the SUCI comprises a home public land mobile network identifier (HPLMN ID), and the terminal device is positioned in a first PLMN network coverage range; if the target PLMN ID and the HPLMN ID belong to the second PLMN network and the terminal equipment has target subscription data, registering the terminal equipment in the second PLMN network; the target subscription data is used for indicating that the terminal equipment has network sharing service, and the second PLMN network is different from the first PLMN network.

Optionally, determining that the target PLMN ID and the HPLMN ID both belong to the second PLMN network includes: acquiring a shared list, wherein the shared list comprises a plurality of PLMN networks and a plurality of PLMN IDs belonging to each PLMN network, and the plurality of PLMN networks comprise a first PLMN network and a second PLMN network; if the multiple PLMN IDs include the target PLMN ID and the HPLMN ID, determining that the target PLMN ID and the HPLMN ID belong to the second PLMN network.

Optionally, the method further comprises: sending an authentication request message to an AUSF network element of a target authentication service function; the authentication request message is used for requesting the target AUSF network element to carry out authentication processing on the terminal equipment, and the target AUSF network element belongs to the second PLMN network; acquiring subscription data of terminal equipment; the subscription data is sent by the target AUSF network element under the condition that the authentication of the terminal equipment is passed; and determining whether the target subscription data exists in the terminal equipment from the subscription data.

Optionally, the method further comprises: if the target PLMN ID and the HPLMN ID are both attributed to the first PLMN network, registering the terminal equipment in the first PLMN network.

Optionally, the method further comprises: under the condition that the terminal equipment does not have the target subscription data, a first registration response message of the terminal equipment is sent; the first registration response message is used for indicating that the registration of the terminal equipment fails.

Based on the technical scheme provided by the application, after the registration request message of the terminal equipment is acquired, whether the target PLMN ID and the HPLMN ID in the registration request message are both attributed to the second PLMN network can be determined, and the terminal equipment is registered in the second PLMN network under the condition that the target PLMN ID and the HPLMN ID are both attributed to the second PLMN network and the terminal equipment has target subscription data. Thus, even if the terminal equipment is in the coverage area of the first PLMN network, the network to which the terminal equipment belongs can be determined according to the target PLMN ID and the HPLMN ID, and then the first PLMN network can send signaling and data generated by the terminal equipment to the home network of the terminal equipment, so that the first PLMN network is prevented from misjudging the first PLMN network as the home network UE, the corresponding signaling and data cannot be correctly routed to the home network, registration failure is caused, the terminal equipment cannot access to the shared network, and user experience is improved.

In a second aspect, there is provided a network registration apparatus, the apparatus comprising: an acquisition unit and a processing unit; an obtaining unit, configured to obtain a registration request message of a terminal device, where the registration request message includes a target public land mobile network identifier PLMN ID and a subscriber hidden identifier sui, and the sui includes a home public land mobile network identifier HPLMN ID, and the terminal device is in a coverage area of a first PLMN network; a processing unit, configured to register the terminal device in the second PLMN network if the target PLMN ID and the HPLMN ID both belong to the second PLMN network and the terminal device has target subscription data; the target subscription data is used for indicating that the terminal equipment has network sharing service, and the second PLMN network is different from the first PLMN network.

Optionally, the processing unit is specifically configured to: acquiring a shared list, wherein the shared list comprises a plurality of PLMN networks and a plurality of PLMN IDs belonging to each PLMN network, and the plurality of PLMN networks comprise a first PLMN network and a second PLMN network; if the multiple PLMN IDs include the target PLMN ID and the HPLMN ID, determining that the target PLMN ID and the HPLMN ID belong to the second PLMN network.

Optionally, the apparatus further comprises: a transmitting unit; a sending unit, configured to send an authentication request message to an AUSF network element; the authentication request message is used for requesting the target AUSF network element to carry out authentication processing on the terminal equipment, and the target AUSF network element belongs to the second PLMN network; the acquisition unit is also used for acquiring the subscription data of the terminal equipment; the subscription data is sent by the target AUSF network element under the condition that the authentication of the terminal equipment is passed; and the processing unit is also used for determining whether the terminal equipment has the target subscription data from the subscription data.

Optionally, the processing unit is further configured to: registering the terminal device in the first PLMN network in case both the target PLMN ID and the HPLMN ID belong to the first PLMN network.

Optionally, the sending unit is further configured to: under the condition that the terminal equipment does not have the target subscription data, a first registration response message of the terminal equipment is sent; the first registration response message is used for indicating that the registration of the terminal equipment fails.

In a third aspect, a network registration apparatus is provided, where the network registration apparatus may implement the functions performed by the network registration apparatus in the above aspects or each possible design, and the functions may be implemented by hardware, for example: in one possible design, the network registration device may include: a processor and a communication interface, the processor may be adapted to support the network registration means to implement the functionality referred to in the above-described first aspect or any of the possible designs of the first aspect.

In yet another possible design, the network registration device may further include a memory for holding computer-executable instructions and data necessary for the network registration device. The processor executes the computer-executable instructions stored by the memory to cause the network registration device to perform any one of the possible network registration methods of the first aspect or the first aspect described above when the network registration device is running.

In a fourth aspect, a computer readable storage medium is provided, which may be a readable non-volatile storage medium, storing computer instructions or a program which, when run on a computer, cause the computer to perform the above first aspect or any one of the possible network registration methods of the above aspects.

In a fifth aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform the network registration method of the first aspect or any of the possible designs of the aspects.

In a sixth aspect, an electronic device is provided that includes one or more processors and one or more memories. The one or more memories are coupled with the one or more processors, the one or more memories being for storing computer program code comprising computer instructions that, when executed by the one or more processors, cause the electronic device to perform the network registration method as described above in the first aspect or any of the possible designs of the first aspect.

In a seventh aspect, a system on a chip is provided, the system on a chip comprising a processor and a communication interface, the system on a chip being operable to implement the functions performed by the network registration device in any of the above-described first aspects or any of the possible designs of the first aspect. In one possible design, the chip system further includes a memory for holding program instructions and/or data. The chip system may be composed of a chip, or may include a chip and other discrete devices, without limitation.

Drawings

Fig. 1 is a schematic structural diagram of a network sharing scene system according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of yet another network sharing scenario system according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a network registration system according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a network registration device according to an embodiment of the present application;

fig. 5 is a schematic flow chart of a network registration method according to an embodiment of the present application;

fig. 6 is a flowchart of another network registration method according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of another network registration device according to an embodiment of the present application.

Detailed Description

In order to enable those skilled in the art to better understand the technical solutions of the present disclosure, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the disclosure described herein may be capable of operation in sequences other than those illustrated or described herein. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with aspects of embodiments of the application as detailed in the accompanying claims.

It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, and/or components.

The third generation partnership project (3rd Generation Partnership Project,3GPP) of the international communication standards organization defines new network sharing scenarios and requirements during the requirements phase of Release-19 version of 5 GC. For example, a schematic diagram of the architecture of a tethering scene system may be shown in fig. 1.

The terminal equipment is a user of an operator A, the operator A is a home operator, and the operator X is an operator for providing indirect network sharing. When the terminal equipment is in the sharing area without the 5G base station of the operator A but with the 5G base station of the operator X, the indirect network sharing technology can be adopted to continue to enjoy the 5G service through the 5G base station of the access operator X, and the operator A can control and provide the service for the terminal equipment through the core network of the operator X and the shared NG-RAN. By the indirect network sharing technology, the network operation and maintenance challenges brought by the fact that a plurality of core networks are directly connected to one wireless node at the same time in the existing direct connection sharing technology can be avoided.

As another example, as shown in fig. 2, a schematic structural diagram of a network sharing scenario system may be shown, where the network sharing scenario system includes a core network device of an operator a, a core network device of an operator B, a core network device of an operator C, a core network device of an operator X (denoted as a first core network device), and an access network device of an operator X (denoted as a first access network device).

The access network device of the operator X is connected with the core network device of the operator A, the core network device of the operator B and the core network device of the operator C through N2 and N3 interfaces respectively.

The access network device of the operator X is used for accessing the terminal devices of the operators a, B and C, and forwarding the data of the terminal devices to the core network devices of the corresponding operators.

The scheme for broadcasting PLMN IDs by the shared NG-RAN base station of operator X may be:

scheme 1: operator X broadcasts one PLMN ID for each 5GC of operator a\b\c, respectively, which is the same as the NG-RAN broadcast of operator a\b\c's home network, abbreviated herein as the multiple HPLMN scheme or the old network number scheme. Therefore, the PLMN selection process of the UE is shortest, particularly the off-network time of the UE is short when the UE is started or recovered from non-coverage, the existing PLMN ID is utilized, no code number resource is wasted, and the UE can be completely free from perception.

Scheme 2: the operator X broadcasts a PLMN ID for each 5GC such as the operator a\b\c, which is different from the NG-RAN broadcast of the operator a\b\c home network, which is abbreviated as a multi-VPLMN scheme or a multi-new network number scheme herein. The PLMN ID selection process of the UE is longer, so that the off-line time of the UE is long when the UE is started or recovered from non-coverage, and a plurality of new VPLMN IDs are adopted, so that code number resource waste is caused.

Scheme 3: the operator X broadcasts the same PLMN ID for a plurality of 5 GCs of the operator a\b\c, respectively, and the PLMN ID is different from the PLMN ID broadcast by NG-RAN of the operator a\b\c home network, which is abbreviated as a single VPLMN scheme herein. The longer PLMN ID selection procedure of the UE may result in long off-network time when the UE is powered on or recovered from non-coverage. In the case of using a separate VPLMN ID, no code number resource is wasted, e.g., using PLMN ID (X), and less resource is wasted, e.g., using PLMN ID (XY) code number.

Compared with the scheme 1, the scheme 2 and the scheme 3 have long PLMN selecting process, which can result in long off-line time of the UE when the UE is started or recovers from non-coverage, and a plurality of new VPLMN-IDs are adopted, so that code number resource waste is caused. However, when the UE belonging to another operator in the scheme 1 initiates network registration in the shared area covered by the shared operator, if the selected PLMN ID sent in the registration request is HPLMN ID and HPLMN ID carried in the SIM card of the UE belong to the same operator, the AMF network element of the shared operator may determine that the UE is a home network UE, so the AMF cannot correctly route the corresponding signaling and data to the home network, resulting in registration failure, and the UE cannot access to the shared network.

In view of this, an embodiment of the present application provides a network registration method, applied to an AMF network element in a first PLMN network, including:

acquiring a registration request message of a terminal device, wherein the registration request message comprises a target public land mobile network identifier (PLMN ID) and a user hidden identifier (SUCI), the SUCI comprises a home public land mobile network identifier (HPLMN ID), and the terminal device is positioned in a first PLMN network coverage range; if the target PLMN ID and the HPLMN ID belong to the second PLMN network and the terminal equipment has target subscription data, registering the terminal equipment in the second PLMN network; the target subscription data is used for indicating that the terminal equipment has network sharing service, and the second PLMN network is different from the first PLMN network.

The method provided by the embodiment of the application is described in detail below with reference to the attached drawings.

It should be noted that, the network system described in the embodiment of the present application is for more clearly describing the technical solution of the embodiment of the present application, and does not constitute a limitation on the technical solution provided in the embodiment of the present application, and those skilled in the art can know that, with the evolution of the network system and the appearance of other network systems, the technical solution provided in the embodiment of the present application is applicable to similar technical problems.

Fig. 3 is a schematic diagram of a network registration system 10 according to an embodiment of the present application. As shown in fig. 3, the network registration system 10 may include a first PLMN network 11, a second PLMN network 12, and a terminal device 13. The first PLMN network 11, the second PLMN network 12 and the terminal equipment 13 are connected. For example, the first PLMN network 11, the second PLMN network 12, and the terminal equipment 13 may be connected by wireless, and the first PLMN network 11, the second PLMN network 12, and the terminal equipment 13 may also be connected by wireless.

The first PLMN network 11 according to the embodiment of the present application is configured to implement a function of a radio access network, and provide a radio access service for a terminal device 13 located in a coverage area of the first PLMN network. The first PLMN network 11 is a PLMN network of the sharing party operator. For example, it may be a PLMN network of operator X. The embodiment of the present application does not limit the specific technology, the specific number and the specific device configuration of the first PLMN network 11.

The second PLMN network 12 is a different PLMN network than the first PLMN network 11. For example, it may be a PLMN network of operator a.

The terminal device 13 is a device that needs to provide a communication service, and may be a terminal device belonging to the same operator as the first PLMN network 11. The terminal device 13 may also be a terminal device belonging to one operator with the second PLMN network 12. The application will be mainly described by taking as an example a terminal device 13 and a second PLMN network 12 belonging to the same operator.

It should be noted that fig. 3 is only an exemplary frame diagram, and names of respective devices included in fig. 3 are not limited, and other nodes may be included in addition to the functional nodes shown in fig. 3, which is not limited by the embodiment of the present application.

In particular, each device in fig. 3 may adopt the constituent structure shown in fig. 4 or include the components shown in fig. 4. Fig. 4 is a schematic diagram of a network registration device 200 according to an embodiment of the present application, where the network registration device 200 may be a server, or the network registration device 200 may be a chip or a system on a chip in the server. As shown in fig. 4, the network registration apparatus 200 includes a processor 201, a communication interface 202, and a communication line 203.

Further, the network registration device 200 may also include a memory 204. The processor 201, the memory 204, and the communication interface 202 may be connected by a communication line 203.

The processor 201 is a CPU, general-purpose processor, network processor (network processor, NP), digital signal processor (digital signal processing, DSP), microprocessor, microcontroller, programmable logic device (programmable logic device, PLD), or any combination thereof. The processor 201 may also be other devices with processing functions, such as, without limitation, circuits, devices, or software modules.

Communication interface 202 is used to communicate with other devices or other communication networks. The communication interface 202 may be a module, a circuit, a communication interface, or any device capable of enabling communication.

A communication line 203 for transmitting information between the respective components included in the network registration apparatus 200.

Memory 204 for storing instructions. Wherein the instructions may be computer programs.

The memory 204 may be, but is not limited to, a read-only memory (ROM) or other type of static storage device capable of storing static information and/or instructions, a random access memory (random access memory, RAM) or other type of dynamic storage device capable of storing information and/or instructions, an EEPROM, a CD-ROM (compact disc read-only memory) or other optical disk storage, an optical disk storage (including compact disk, laser disk, optical disk, digital versatile disk, blu-ray disk, etc.), a magnetic disk storage medium or other magnetic storage device, etc.

It should be noted that the memory 204 may exist separately from the processor 201 or may be integrated with the processor 201. Memory 204 may be used to store instructions or program code or some data, etc. The memory 204 may be located in the network registration device 200 or may be located outside the network registration device 200, without limitation. The processor 201 is configured to execute the instructions stored in the memory 204 to implement the network registration method provided in the following embodiments of the present application.

In one example, processor 201 may include one or more CPUs, such as CPU0 and CPU1 in fig. 4.

As an alternative implementation, the network registration apparatus 200 includes a plurality of processors, for example, in addition to the processor 201 in fig. 4, a processor 205 may be included.

It should be noted that the constituent structures shown in fig. 4 do not constitute limitations of the respective apparatuses in fig. 3, and that the respective apparatuses in fig. 3 may include more or less components than those shown in fig. 4, or may combine some components, or may be arranged differently, in addition to those shown in fig. 4.

In the embodiment of the application, the chip system can be composed of chips, and can also comprise chips and other discrete devices.

Further, actions, terms, and the like, which are referred to between embodiments of the present application, are not limited thereto. The message names of interactions between the devices or parameter names in the messages in the embodiments of the present application are just an example, and other names may be used in specific implementations without limitation.

In order to clearly describe the technical solution of the embodiments of the present application, in the embodiments of the present application, the words "first", "second", etc. are used to distinguish the same item or similar items having substantially the same function and effect. It will be appreciated by those of skill in the art that the words "first," "second," and the like do not limit the amount and order of execution, and that the words "first," "second," and the like do not necessarily differ.

In the present application, the words "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

In the present application, "at least one" means one or more, and "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a alone, a and B together, and B alone, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b, or c may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or plural.

The network registration method provided by the embodiment of the present application is described below with reference to the network registration system shown in fig. 3.

Fig. 5 is a schematic diagram of a network registration method according to an embodiment of the present application, which is applied to a first PLMN network, and may also be applied to an AMF network element in the first PLMN network, where the first PLMN network may be the first PLMN network 11 in fig. 3, and may also be a device, such as a chip, in the first PLMN network 11. The embodiment of the present application is illustrated by taking an AMF network element applied to a first PLMN network as an example, as shown in fig. 5, the method includes the following steps S301-S303:

s301, acquiring a registration request message of the terminal equipment.

The registration request message comprises a target public land mobile network identifier (PLMN ID) and a user hiding identifier (SUCI), wherein the SUCI comprises a home public land mobile network identifier (HPLMN ID), and the terminal equipment is located in the network coverage of the first PLMN.

The target PLMN ID may be a same PLMN ID as a PLMN ID broadcasted by a home operator corresponding to the terminal device in a plurality of PLMNs broadcasted by the first PLMN network.

For example, the first PLMN network may broadcast one PLMN ID for each 5GC of operator a\b\c, respectively, which is the same as the NG-RAN broadcast of the operator a\b\c home network. For example, the PLMN ID of the operator a may be PLMN ID (A1), PLMN ID (A2), or the like. The PLMN ID of the operator B may be a PLMN ID (B1), a PLMN ID (B2), or the like. The PLMN ID of the operator C may be a PLMN ID (C1), a PLMN ID (C2), or the like.

As a possible implementation manner, the AMF network element may receive an N2 message sent by an NG-RAN device in the first PLMN network, and obtain a registration request message of the terminal device from the N2 message.

It should be noted that the first PLMN network may include a first core network device and a first NG-RAN device.

In the embodiment of the present application, a first PLMN network and a second PLMN network are mainly described as examples of 5G PLMN networks. In a specific implementation, the first PLMN network and the second PLMN network may also be network devices of other network systems, which is not limited in the present application.

S302, determining whether the target PLMN ID and the HPLMN ID belong to a second PLMN network, and whether the terminal equipment has target subscription data.

The target subscription data is used for indicating that the terminal equipment has network sharing service, and the second PLMN network is different from the first PLMN network. For example, the second PLMN network may be the PLMN network of operator a in fig. 1. The first PLMN network may be a PLMN network of operator X in fig. 1. The PLMN network comprises an access network device and a core network device.

As a possible implementation, the AMF network element may obtain the shared list and determine whether the target PLMN ID and the HPLMN ID of the shared list belong to the second PLMN network according to whether the target PLMN ID and the HPLMN ID belong to the second PLMN network.

For example, the AMF network element may determine from the shared list whether the target PLMN ID and the HPLMN ID are included in the plurality of PLMN IDs belonging to the second PLMN network, and determine that the target PLMN ID and the HPLMN ID both belong to the second PLMN network if the target PLMN ID and the HPLMN ID are included in the plurality of PLMN IDs belonging to the second PLMN network; in the case that any one of the target PLMN ID and the HPLMN ID is not included among the plurality of PLMN IDs attributed to the second PLMN network, it is determined that the target PLMN ID and the HPLMN ID are not both attributed to the second PLMN network.

It should be noted that the shared list includes a plurality of PLMN networks including a first PLMN network and a second PLMN network, and a plurality of PLMN IDs assigned to each PLMN network. For example, the shared list may be as shown in table 1 below.

Table 1 shared list

It should be noted that the data of table 1 are only exemplary. Other indirect network sharing home operators and other PLMN IDs may also be included in embodiments of the present application, without limitation.

Further, the AMF network element may obtain subscription data from the second PLMN network, and determine whether the terminal device has the target subscription data from the subscription data. Specific description of this step may be referred to the following description, and will not be repeated here.

In practical applications, the terminal device may also be referred to as an indirect network sharing UE in case it is determined that both the target PLMN ID and the HPLMN ID belong to the second PLMN network.

S303, if the target PLMN ID and the HPLMN ID are both attributed to the second PLMN network and the terminal equipment has target subscription data, registering the terminal equipment in the second PLMN network.

As a possible implementation manner, the AMF network element may send a registration request message to a unified data management function (the unified data management, UDM) network element in the second PLMN network, so that the UDM network element in the second PLMN network stores a context of the terminal device in the registration process, and completes registration for the terminal device in the second PLMN network.

Further, the AMF network element may further send a second registration response message to the terminal device. Correspondingly, the terminal equipment sends a registration completion instruction to the AMF network element. The second registration response message is used for indicating that the AMF network element agrees to register for the terminal device.

In some embodiments, the AMF network element may also send a policy request message to the PCF network element in the second PLMN network.

The policy request message is used for requesting to acquire a network policy in the second PLMN network.

In still other embodiments, if the target PLMN ID and the HPLMN ID both belong to the first PLMN network (which may also be referred to as home network UE of the first PLMN network), the terminal device is registered in the first PLMN network.

For example, in the case of registering the terminal device in the first PLMN network, the AMF may authenticate the terminal device by using the AUSF in the first PLMN network, and the AMF network element may send a registration request message to the UDM network element in the first PLMN network, so that the UDM network element in the first PLMN network stores the context of the terminal device in the registration process, and completes the registration for the terminal device in the first PLMN network. UDM and PCF network policies, and obtaining network policies from PCF network elements in the first PLMN network.

In still other embodiments, registration is performed for the terminal device in a third PLMN network if the target PLMN ID and HPLMN ID are not both attributed to the first PLMN network or the target PLMN ID and HPLMN ID are not both attributed to the second PLMN network (which may also be referred to as roaming UE, roaming user, etc.).

Wherein the third PLMN network is a PLMN network to which the HPLMN ID of the terminal equipment belongs.

In still other embodiments, if the terminal device does not have the target subscription data, the AMF network element may send a first registration response message to the terminal device, where the first registration response message is used to indicate that the registration of the terminal device fails.

Based on the technical scheme provided by the application, after the registration request message of the terminal equipment is acquired, whether the target PLMN ID and the HPLMN ID in the registration request message are both attributed to the second PLMN network can be determined, and the terminal equipment is registered in the second PLMN network under the condition that the target PLMN ID and the HPLMN ID are both attributed to the second PLMN network and the terminal equipment has target subscription data. Thus, even if the terminal equipment is in the coverage area of the first PLMN network, the network to which the terminal equipment belongs can be determined according to the target PLMN ID and the HPLMN ID, and then the first PLMN network can send signaling and data generated by the terminal equipment to the home network of the terminal equipment, so that the first PLMN network is prevented from misjudging the first PLMN network as the home network UE, the corresponding signaling and data cannot be correctly routed to the home network, registration failure is caused, the terminal equipment cannot access to the shared network, and user experience is improved.

In one possible embodiment, as shown in fig. 6, in order to determine whether the terminal device has the target subscription data from the subscription data, the network registration method of the present application may further include the following S401 to S403.

S401, sending authentication request information to a target authentication service function AUSF network element.

The authentication request message is used for requesting the target AUSF network element to perform authentication processing on the terminal equipment, and the target AUSF network element belongs to the second PLMN network.

As a possible implementation, the AMF network element may send an authentication request to the target AUSF network element through the wireless communication network. Correspondingly, the target AUSF network element receives the authentication request. Further, the target AUSF network element performs authentication processing on the terminal device.

For example, the authentication request may include an identifier of the terminal device, and the target AUSF network element may determine that the terminal device authentication is successful if the identifier of the terminal device exists in the pre-stored subscription data of the target AUSF network element; and under the condition that the pre-stored subscription data does not contain the identification of the terminal equipment, determining that the authentication of the terminal equipment fails.

In practical application, the AMF network element may send a first registration response message to the terminal device in case it is determined that the authentication of the terminal device fails.

S402, acquiring subscription data of the terminal equipment.

The subscription data is sent by the target AUSF network element under the condition that the authentication of the terminal equipment is passed. The subscription data comprises a plurality of service data subscribed by the terminal equipment.

As a possible implementation manner, after determining that the terminal device authentication passes, the target AUSF network element may send subscription data of the terminal device to the AMF network element. Correspondingly, the AMF network element receives the subscription data of the terminal equipment.

In some embodiments, after determining that the authentication of the terminal device passes, the target AUSF network element may also send a subscriber permanent identifier (subscription permanent identifier, SUPI) corresponding to the sui of the terminal device to the AMF network element.

S403, determining whether the terminal equipment has target subscription data from the subscription data.

As a possible implementation manner, the AMF network element may determine a target service identifier corresponding to the target subscription data, and determine whether the target subscription data exists in the subscription data according to the target service identifier.

For example, in the case that the subscription data includes the target service identifier, the AMF network element may determine that the terminal device has the target subscription data; in the case that the subscription data does not include the target service identifier, the AMF network element may determine that the terminal device does not have the target subscription data.

It should be noted that, the AMF network element may determine whether the terminal device has the target subscription data from the subscription data determined by different granularities. For example, PLMN granularity may be used, or UE granularity may be used.

The above embodiments of the present application may be combined without contradiction.

The embodiment of the application can divide the functional modules or functional units of the network registration device according to the method example, for example, each functional module or functional unit can be divided corresponding to each function, and two or more functions can be integrated in one processing module. The integrated modules may be implemented in hardware, or in software functional modules or functional units. The division of the modules or units in the embodiment of the present application is schematic, which is merely a logic function division, and other division manners may be implemented in practice.

In the case of dividing the respective functional modules by the respective functions, fig. 7 shows a schematic structural diagram of a network registration device 700, which may be an AMF network element or a chip applied to the AMF network element, and may be used to perform the functions of the AMF network element as described in the above embodiments. The network registration apparatus 700 shown in fig. 7 may include: an acquisition unit 701 and a processing unit 702; an obtaining unit 701, configured to obtain a registration request message of a terminal device, where the registration request message includes a target public land mobile network identifier PLMN ID and a subscriber hidden identifier sui, and the sui includes a home public land mobile network identifier HPLMN ID, and the terminal device is in a coverage area of a first PLMN network; a processing unit 702, configured to register the terminal device in the second PLMN network if the target PLMN ID and the HPLMN ID both belong to the second PLMN network and the terminal device has target subscription data; the target subscription data is used for indicating that the terminal equipment has network sharing service, and the second PLMN network is different from the first PLMN network.

Optionally, the processing unit 702 is specifically configured to: acquiring a shared list, wherein the shared list comprises a plurality of PLMN networks and a plurality of PLMN IDs belonging to each PLMN network, and the plurality of PLMN networks comprise a first PLMN network and a second PLMN network; if the multiple PLMN IDs include the target PLMN ID and the HPLMN ID, determining that the target PLMN ID and the HPLMN ID belong to the second PLMN network.

Optionally, the apparatus further comprises: a transmission unit 703; a sending unit 703, configured to send an authentication request message to a target authentication service function AUSF network element; the authentication request message is used for requesting the target AUSF network element to carry out authentication processing on the terminal equipment, and the target AUSF network element belongs to the second PLMN network; an acquiring unit 701, configured to acquire subscription data of a terminal device; the subscription data is sent by the target AUSF network element under the condition that the authentication of the terminal equipment is passed; the processing unit 702 is further configured to determine whether the terminal device has the target subscription data from the subscription data.

Optionally, the processing unit 702 is further configured to: registering the terminal device in the first PLMN network in case both the target PLMN ID and the HPLMN ID belong to the first PLMN network.

Optionally, the sending unit 703 is further configured to: under the condition that the terminal equipment does not have the target subscription data, a first registration response message of the terminal equipment is sent; the first registration response message is used for indicating that the registration of the terminal equipment fails.

The embodiment of the application also provides a computer readable storage medium. All or part of the flow in the above method embodiments may be implemented by a computer program to instruct related hardware, where the program may be stored in the above computer readable storage medium, and when the program is executed, the program may include the flow in the above method embodiments. The computer readable storage medium may be an internal storage unit of the network registration apparatus (including the data transmitting end and/or the data receiving end) of any of the foregoing embodiments, for example, a hard disk or a memory of the network registration apparatus. The computer readable storage medium may be an external storage device of the terminal apparatus, for example, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) card, a flash card (flash card), or the like, which are provided in the terminal apparatus. Further, the computer readable storage medium may further include both an internal storage unit and an external storage device of the network registration apparatus. The computer-readable storage medium is used for storing the computer program and other programs and data required by the network registration apparatus. The above-described computer-readable storage medium may also be used to temporarily store data that has been output or is to be output.

It should be noted that the terms "first" and "second" and the like in the description, the claims and the drawings of the present application are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

It should be understood that, in the present application, "at least one (item)" means one or more, "a plurality" means two or more, "at least two (items)" means two or three and three or more, "and/or" for describing an association relationship of an association object, three kinds of relationships may exist, for example, "a and/or B" may mean: only a, only B and both a and B are present, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b or c may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.

From the foregoing description of the embodiments, it will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of functional modules is illustrated, and in practical application, the above-described functional allocation may be implemented by different functional modules according to needs, i.e. the internal structure of the apparatus is divided into different functional modules to implement all or part of the functions described above.

In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of modules or units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another apparatus, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and the parts displayed as units may be one physical unit or a plurality of physical units, may be located in one place, or may be distributed in a plurality of different places. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a readable storage medium. Based on such understanding, the technical solution of the embodiments of the present application may be essentially or a part contributing to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, including several instructions for causing a device (may be a single-chip microcomputer, a chip or the like) or a processor (processor) to perform all or part of the steps of the method described in the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, etc.

The foregoing is merely illustrative of specific embodiments of the present application, and the scope of the present application is not limited thereto, but any changes or substitutions within the technical scope of the present application should be covered by the scope of the present application. Therefore, the protection scope of the application is subject to the protection scope of the claims.

Claims (12)

1. A network registration method, applied to an AMF network element of an access and mobility management function in a first PLMN network, the method comprising:

acquiring a registration request message of a terminal device, wherein the registration request message comprises a target public land mobile network identifier PLMNID and a user hidden identifier SUCI, the SUCI comprises a home public land mobile network identifier HPLMNID, and the terminal device is in the coverage range of the first PLMN network;

if the target PLMNID and the HPLMNID are both attributed to a second PLMN network and the terminal equipment has target subscription data, registering the terminal equipment in the second PLMN network; the target subscription data is used for indicating that the terminal equipment has network sharing service, and the second PLMN network is different from the first PLMN network.

2. The method of claim 1, wherein determining that the target PLMNID and the HPLMNID both belong to a second PLMN network comprises:

Obtaining a shared list, wherein the shared list comprises a plurality of PLMN networks and a plurality of PLMNIDs belonging to each PLMN network, and the plurality of PLMN networks comprise the first PLMN network and the second PLMN network;

and if the target PLMNID and the HPLMNID are included in the plurality of PLMNIDs, determining that the target PLMNID and the HPLMNID are both in a second PLMN network.

3. The method according to claim 1, wherein the method further comprises:

sending an authentication request message to the target authentication service function AUSF network element; the authentication request message is used for requesting the target AUSF network element to perform authentication processing on the terminal equipment, and the target AUSF network element belongs to the second PLMN network;

acquiring subscription data of the terminal equipment; the subscription data is sent by the target AUSF network element under the condition that the authentication of the terminal equipment is passed;

and determining whether the terminal equipment has target subscription data or not from the subscription data.

4. The method according to claim 1, wherein the method further comprises:

and if the target PLMNID and the HPLMNID are both attributed to the first PLMN network, registering the terminal equipment in the first PLMN network.

5. The method according to any one of claims 1-4, further comprising:

a first registration response message to the terminal device in case the target subscription data does not exist in the terminal device; the first registration response message is used for indicating that the terminal equipment fails to register.

6. A network registration apparatus for use in an access and mobility management function, AMF, network element in a first PLMN network, the apparatus comprising: an acquisition unit and a processing unit;

the acquiring unit is configured to acquire a registration request message of a terminal device, where the registration request message includes a target public land mobile network identifier PLMNID and a subscriber hidden identifier sui, the sui includes a home public land mobile network identifier HPLMNID, and the terminal device is in a coverage area of the first PLMN network;

the processing unit is configured to register the terminal device in a second PLMN network if the target PLMNID and the HPLMNID both belong to the second PLMN network and the terminal device has target subscription data; the target subscription data is used for indicating that the terminal equipment has network sharing service, and the second PLMN network is different from the first PLMN network.

7. The apparatus according to claim 6, wherein the processing unit is specifically configured to:

obtaining a shared list, wherein the shared list comprises a plurality of PLMN networks and a plurality of PLMNIDs belonging to each PLMN network, and the plurality of PLMN networks comprise the first PLMN network and the second PLMN network;

and if the target PLMNID and the HPLMNID are included in the plurality of PLMNIDs, determining that the target PLMNID and the HPLMNID are both in a second PLMN network.

8. The apparatus of claim 6, wherein the apparatus further comprises: a transmitting unit;

the sending unit is used for sending an authentication request message to the AUSF network element of the target authentication service function; the authentication request message is used for requesting the target AUSF network element to perform authentication processing on the terminal equipment, and the target AUSF network element belongs to the second PLMN network;

the acquisition unit is further used for acquiring subscription data of the terminal equipment; the subscription data is sent by the target AUSF network element under the condition that the authentication of the terminal equipment is passed;

the processing unit is further configured to determine whether the terminal device has target subscription data from the subscription data.

9. The apparatus of claim 6, wherein the processing unit is further configured to:

and registering the terminal equipment in the first PLMN network under the condition that the target PLMNID and the HPLMNID are both attributed to the first PLMN network.

10. The apparatus according to any of claims 6-9, wherein the sending unit is further configured to:

a first registration response message to the terminal device in case the target subscription data does not exist in the terminal device; the first registration response message is used for indicating that the terminal equipment fails to register.

11. A computer readable storage medium having instructions stored therein which, when executed, implement the method of any of claims 1-5.

12. A network registration apparatus, comprising: a processor, a memory, and a communication interface; wherein the communication interface is used for the network registration device to communicate with other equipment or network; the memory is configured to store one or more programs, the one or more programs comprising computer-executable instructions that, when executed by the network-based registration device, cause the network-based registration device to perform the method of any of claims 1-5.