CN116801373A - Methods for selecting creditable non-3GPP networks, user terminals and communication systems - Google Patents

Abstract

The present disclosure provides a method, user terminal and communication system for selecting a trusted non-3GPP network. The method for selecting the trusted non-3GPP network comprises the following steps: selecting TNAP supporting slice from pre-configured ANDSP according to slice required by current service under the condition of selecting to access to trusted non-3GPP network; a registration request is sent to the core network device via the TNAP and TNGF entities to access the slice after registration is successful. The method and the device enable the UE to select the corresponding TNAP according to the slice required by the current service, so that flexibility of network resource deployment is improved.

Description

Methods for selecting creditable non-3GPP networks, user terminals and communication systems

Technical field

The present disclosure relates to the field of communications, and in particular to a method of selecting a credit-granting non-3GPP (3rd Generation Partnership Project, 3rd Generation Partnership Project) network, a user terminal and a communications system.

Background technique

Currently, 3GPP's 5G UE (User Equipment) accesses a trusted non-3GPP network (Untrusted non-3GPP) and can only connect to a pre-configured TNAP (Trusted Non-3GPP Access Point) on the network side. ) and TNGF (Trusted Non-3GPP Gateway Function, trusted non-3GPP gateway function) entity. The network side can set the corresponding TNAP and TNGF according to the slice subscribed by the UE.

Contents of the invention

The inventor noticed that in related technologies, when one TNAP and TNGF cannot support all slices of the UE, the corresponding TNAP and TNGF entities cannot be selected based on the slices of the UE's current services.

Accordingly, the present disclosure provides a solution for selecting a credit-granted non-3GPP network, which enables the UE to select the corresponding TNAP and TNGF according to the slice required by the current service, thereby improving the flexibility of network resource deployment.

According to a first aspect of an embodiment of the present disclosure, a method for selecting a credited non-3GPP network is provided, which is executed by a user terminal, including: in the case of selecting to access a credited non-3GPP network, according to the slice required for the current service Select the non-3GPP network access point TNAP that supports the credit of the slice from the pre-configured access network discovery and selection policy ANDSP; send a registration request to the core network device through the TNAP and the authorized non-3GPP gateway function TNGF entity, In order to access the slice after successful registration.

In some embodiments, in the case of choosing to access a credited non-3GPP network, selecting a TNAP that supports the slice from the pre-configured ANDSP according to the slice required by the current service includes: determining that the slice is on the home public land. When the mobile network HPLMN chooses to access a credited non-3GPP network, the first TNAP of the credited non-3GPP network that supports the HPLMN slice is selected from the ANDSP according to the HPLMN slice required for the current service.

In some embodiments, sending a registration request to the core network device through the TNAP and TNGF entities includes: sending a registration request to the core network device through the first TNAP and TNGF entities so as to access the core network device after successful registration. HPLMN slices.

In some embodiments, when choosing to access a credited non-3GPP network, selecting a TNAP that supports the slice from pre-configured ANDSPs based on the slice required for the current service includes: determining when accessing public land. When the mobile network VPLMN chooses to access a credited non-3GPP network, it queries the VPLMN slice that has a mapping relationship with the HPLMN slice required for the current service; selects the second credited non-3GPP network that supports the VPLMN slice from the ANDSP TNAP.

In some embodiments, sending a registration request to the core network device through the TNAP and TNGF entities includes: using the second TNAP and TNGF entities to send a registration request to the core network device to access the core network device after successful registration. VPLMN slice.

In some embodiments, during the process of accessing the HPLMN core network, the first ANDSP information sent by the HPLMN device is received, wherein the first ANDSP information includes the first TNAP identifier of the credited non-3GPP network within the HPLMN. and HPLMN slice information supported by the first TNAP.

In some embodiments, during the process of accessing the HPLMN core network, the second ANDSP information sent by the HPLMN device is received, wherein the second ANDSP information includes the untrusted untrusted information in each VPLMN of multiple VPLMNs. The second TNAP of the 3GPP network and the VPLMN slice information supported by the second TNAP. According to the roaming agreement between each VPLMN and the HPLMN, the VPLMN slice can be mapped to the HPLMN slice signed by the user terminal. .

In some embodiments, during the process of accessing the VPLMN core network, the third ANDSP information sent by the VPLMN device is received, wherein the third ANDSP information includes the third TNAP of the trusted non-3GPP network in the VPLMN and all According to the VPLMN slice information supported by the third TNAP, according to the roaming agreement between the VPLMN and the HPLMN, the VPLMN slice can be mapped to the HPLMN slice subscribed by the user terminal.

In some embodiments, the HPLMN device is a policy control function PCF entity in the HPLMN; the VPLMN device is a PCF entity in the VPLMN; and the core network device is an access and mobility management function AMF entity. .

According to a second aspect of an embodiment of the present disclosure, a user terminal is provided, including: a first processing module configured to, in the case of choosing to access a credited non-3GPP network, configure slices required for the current service from preconfigured The access network discovery and selection strategy ANDSP selects the non-3GPP network access point TNAP that supports the credit granting of the slice; the second processing module is configured to provide the core network access point through the TNAP and the authorized non-3GPP gateway function TNGF entity. The device sends a registration request to access the slice after successful registration.

In some embodiments, the first processing module is configured to, when it is determined that the home public land mobile network HPLMN chooses to access the credited non-3GPP network, based on the HPLMN slice required by the current service from the ANDSP Select the first TNAP of the non-3GPP network that supports the crediting of the HPLMN slice.

In some embodiments, the second processing module is configured to send a registration request to the core network device through the first TNAP and TNGF entities, so as to access the HPLMN slice after successful registration.

In some embodiments, the first processing module is configured to query the HPLMN slice that has a mapping relationship with the HPLMN slice required for the current service when it is determined that the public land mobile network VPLMN chooses to access the credited non-3GPP network. VPLMN slice, select the second TNAP of the non-3GPP network that supports the credit of the VPLMN slice from the ANDSP.

In some embodiments, the second processing module is configured to use the second TNAP and TNGF entities to send a registration request to the core network device so as to access the VPLMN slice after successful registration.

In some embodiments, the first processing module is configured to receive the first ANDSP information sent by the HPLMN device during the process of accessing the HPLMN core network, wherein the first ANDSP information includes the untrusted untrusted information in the HPLMN. The first TNAP identifier of the 3GPP network and the HPLMN slice information supported by the first TNAP.

In some embodiments, the first processing module is configured to receive the second ANDSP information sent by the HPLMN device during the process of accessing the HPLMN core network, wherein the second ANDSP information includes each of the plurality of VPLMNs. The second TNAP of the trusted non-3GPP network in each VPLMN and the VPLMN slice information supported by the second TNAP. According to the roaming agreement between each VPLMN and the HPLMN, the VPLMN slice can be mapped to the On the HPLMN slice signed by the user terminal.

In some embodiments, the first processing module is configured to receive the third ANDSP information sent by the VPLMN device during the process of accessing the VPLMN core network, wherein the third ANDSP information includes the credited non-3GPP in the VPLMN. The third TNAP of the network and the VPLMN slice information supported by the third TNAP. According to the roaming agreement between the VPLMN and the HPLMN, the VPLMN slice can be mapped to the HPLMN slice subscribed by the user terminal.

In some embodiments, the HPLMN device is a PCF entity in the HPLMN; the VPLMN device is a PCF entity in the VPLMN; and the core network device is an AMF entity.

According to a third aspect of an embodiment of the present disclosure, a user terminal is provided, including: a memory configured to store instructions; a processor coupled to the memory, and the processor is configured to execute any of the above implementations based on instructions stored in the memory method described in the example.

According to a fourth aspect of an embodiment of the present disclosure, a communication system is provided, including: a user terminal as described in any of the above embodiments; a TNAP configured to, after receiving a registration request sent by the user terminal, The registration request is sent to the TNGP entity; the TNGP entity is configured to send the registration request sent by the TNAP to the core network device; the core network device is configured to perform registration processing according to the registration request, so that the user terminal After successful registration, access the slices required for the current business.

In some embodiments, the above-mentioned system further includes: an HPLMN device configured to select, in the process of the user terminal accessing the HPLMN core network, the credited non-3GPP in the HPLMN from the HPLMN slice contracted by the user terminal. The HPLMN slice supported by the first TNAP of the network sends first ANDSP information to the user terminal, where the first ANDSP information includes the first TNAP and the HPLMN slice information supported by the first TNAP.

In some embodiments, the HPLMN device is further configured to send second ANDSP information to the user terminal during the process of the user terminal accessing the HPLMN core network, wherein the second ANDSP information includes multiple VPLMN The second TNAP of the trusted non-3GPP network in each VPLMN and the VPLMN slice information supported by the second TNAP. According to the roaming agreement between each VPLMN and the HPLMN, the VPLMN slice can be mapped to On the HPLMN slice signed by the user terminal.

In some embodiments, the HPLMN device is further configured to obtain the second TNAP and the second TNAP of the trusted non-3GPP network in each of the plurality of VPLMNs according to the roaming agreement between the HPLMN device and the plurality of VPLMNs. Describe the VPLMN slice information supported by the second TNAP.

In some embodiments, the above system further includes: a VPLMN device configured to send third ANDSP information to the user terminal when the user terminal accesses the VPLMN core network, wherein the third ANDSP information contains: Including the third TNAP of the trusted non-3GPP network in the VPLMN and the VPLMN slice information supported by the third TNAP. According to the roaming agreement between the VPLMN and the HPLMN, the VPLMN slice can be mapped to the On the HPLMN slice signed by the user terminal.

In some embodiments, the HPLMN device is a PCF entity in the HPLMN; the VPLMN device is a PCF entity in the VPLMN; and the core network device is an AMF entity.

According to a fifth aspect of an embodiment of the present disclosure, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and when the instructions are executed by a processor, the method as described in any of the above embodiments is implemented.

Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings.

Description of the drawings

In order to explain the embodiments of the present disclosure or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only These are some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting any creative effort.

Figure 1 is a schematic flowchart of a method for selecting a non-3GPP network for credit according to an embodiment of the present disclosure;

Figure 2 is a schematic structural diagram of a user terminal according to an embodiment of the present disclosure;

Figure 3 is a schematic structural diagram of a user terminal according to another embodiment of the present disclosure;

Figure 4 is a schematic structural diagram of a communication system according to an embodiment of the present disclosure;

Figure 5 is a schematic structural diagram of a communication system according to another embodiment of the present disclosure;

FIG. 6 is a schematic flowchart of a method for selecting a credited non-3GPP network according to another embodiment of the present disclosure.

Detailed ways

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only some of the embodiments of the present disclosure, rather than all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application or uses. Based on the embodiments in this disclosure, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of this disclosure.

The relative arrangement of components and steps, numerical expressions, and numerical values set forth in these examples do not limit the scope of the disclosure unless otherwise specifically stated.

At the same time, it should be understood that, for convenience of description, the dimensions of various parts shown in the drawings are not drawn according to actual proportional relationships.

Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the authorized specification.

In all examples shown and discussed herein, any specific values are to be construed as illustrative only and not as limiting. Accordingly, other examples of the exemplary embodiments may have different values.

It should be noted that similar reference numerals and letters refer to similar items in the following figures, so that once an item is defined in one figure, it does not need further discussion in subsequent figures.

Figure 1 is a schematic flowchart of a method for selecting a non-3GPP network for credit according to an embodiment of the present disclosure. In some embodiments, the following method of selecting a trusted non-3GPP network is performed by the user terminal.

In step 101, when choosing to access a credited non-3GPP network, select a supported slice from the pre-configured ANDSP (Access Network Discovery and Selection Policy) based on the slice required for the current service. TNAP.

In step 102, a registration request is sent to the core network device through the TNAP and TNGF entities in order to access the slice after successful registration.

In some embodiments, the core network device is an AMF (Access and Mobility Management Function) entity.

In the method of selecting a credit-granted non-3GPP network provided by the above embodiments of the present disclosure, the user terminal selects the corresponding TNAP according to the slice required by the current service, thereby improving the flexibility of network resource deployment.

For example, when it is determined that HPLMN (Home Public Land Mobile Network) chooses to access a credited non-3GPP network, select from the ANDSP based on the HPLMN slices (HPLMN S-NSSAIs) required for the current service. First TNAP for non-3GPP networks to support HPLMN slicing trust.

Next, a registration request is sent to the core network device through the first TNAP and the corresponding TNGF entity, so as to access the HPLMN slice after successful registration.

For another example, when it is determined that VPLMN (Visited Public Land Mobile Network, Visited Public Land Mobile Network) is selected to access a credited non-3GPP network, the query has a mapping with the HPLMN slice (HPLMN S-NSSAIs) required for the current service. VPLMN slices of relationships (VPLMN S-NSSAIs). Select the second TNAP for the credited non-3GPP network that supports VPLMN slicing from the ANDSP.

Next, use the second TNAP and the corresponding TNGF entity to send a registration request to the core network device so as to access the VPLMN slice after successful registration.

It should be noted here that the user terminal can access the HPLMN core network or VPLMN core network at any time through the 3GPP access method or the non-3GPP access method.

In some embodiments, during the process of accessing the HPLMN core network, the user terminal receives the first ANDSP information sent by the HPLMN device, where the first ANDSP information includes the first TNAP identifier of the credited non-3GPP network within the HPLMN and the third - HPLMN slice information supported by TNAP.

In addition, during the process of accessing the HPLMN core network, the user terminal also receives the second ANDSP information sent by the HPLMN device, where the second ANDSP information includes the second trusted non-3GPP network in each VPLMN of the multiple VPLMNs. VPLMN slice information supported by TNAP and the second TNAP. According to the roaming agreement between each VPLMN and HPLMN, the VPLMN slice can be mapped to the HPLMN slice signed by the user terminal.

It should be noted here that during the process of the user terminal accessing the HPLMN core network, the HPLMN device can send the above-mentioned first ANDSP information and the second ANDSP information to the user terminal respectively, or can also send the first ANDSP information and the second ANDSP information to the user terminal. sent together to the user terminal.

In some embodiments, the HPLMN device is a PCF (Policy Control Function, Policy Control Function) entity in HPLMN.

In other embodiments, during the process of accessing the VPLMN core network, the user terminal receives the third ANDSP information sent by the VPLMN device, where the third ANDSP information includes the third TNAP of the credited non-3GPP network in the VPLMN and The VPLMN slice information supported by the third TNAP, according to the roaming agreement between the VPLMN and the HPLMN, the VPLMN slice can be mapped to the HPLMN slice contracted by the user terminal.

In some embodiments, the VPLMN device is a PCF entity in the VPLMN.

In some embodiments, the SSID (Service Set Identifier, Service Set Identifier) information of the WLANSP (WLAN Selection Policy, Wireless LAN Selection Policy) of ANDSP can be extended to add supported slice (S-NSSAIs) information.

Figure 2 is a schematic structural diagram of a user terminal according to an embodiment of the present disclosure. As shown in FIG. 2 , the user terminal includes a first processing module 21 and a second processing module 22 .

The first processing module 21 is configured to, when choosing to access a credited non-3GPP network, select a credited non-3GPP network access point TNAP that supports the slice from the preconfigured ANDSP according to the slice required by the current service.

The second processing module 22 is configured to send a registration request to the core network device through the TNAP and the authorized non-3GPP gateway function TNGF entity, so as to access the slice after successful registration.

In some embodiments, the core network device is an AMF entity.

In some embodiments, when determining that the HPLMN chooses to access a credited non-3GPP network, the first processing module 21 selects a credited non-3GPP network that supports the HPLMN slice from the ANDSP based on the HPLMN slice required for the current service. First TNAP.

The second processing module 22 sends a registration request to the core network device through the first TNAP and the corresponding TNGF entity, so as to access the HPLMN slice after successful registration.

In other embodiments, when it is determined that the VPLMN chooses to access a credited non-3GPP network, the first processing module 22 queries the VPLMN slice that has a mapping relationship with the HPLMN slice required for the current service, and selects the supported VPLMN slice from the ANDSP. Second TNAP for crediting non-3GPP networks for VPLMN slicing.

The second processing module 22 uses the second TNAP and the corresponding TNGF entity to send a registration request to the core network device, so as to access the VPLMN slice after successful registration.

In some embodiments, the first processing module 21 receives the first ANDSP information sent by the HPLMN device during the process of accessing the HPLMN core network, where the first ANDSP information includes the first TNAP of the credited non-3GPP network within the HPLMN. Identification and HPLMN slice information supported by the first TNAP.

For example, the HPLMN device is a PCF entity in HPLMN.

In addition, during the process of accessing the HPLMN core network, the first processing module 21 receives the second ANDSP information sent by the HPLMN device, where the second ANDSP information includes the credited non-3GPP network in each VPLMN of the plurality of VPLMNs. The second TNAP and the VPLMN slice information supported by the second TNAP. According to the roaming agreement between each VPLMN and HPLMN, the VPLMN slice can be mapped to the HPLMN slice contracted by the user terminal.

In other embodiments, during the process of accessing the VPLMN core network, the first processing module 21 receives the third ANDSP information sent by the VPLMN device, where the third ANDSP information includes the third ANDSP of the credited non-3GPP network in the VPLMN. The VPLMN slice information supported by the third TNAP and the third TNAP. According to the roaming agreement between the VPLMN and the HPLMN, the VPLMN slice can be mapped to the HPLMN slice signed by the user terminal.

For example, the VPLMN device is the PCF entity in the VPLMN.

Figure 3 is a schematic structural diagram of a user terminal according to another embodiment of the present disclosure. As shown in FIG. 3 , the user terminal includes a memory 31 and a processor 32 .

The memory 31 is used to store instructions, and the processor 32 is coupled to the memory 31 . The processor 32 is configured to execute the method involved in any embodiment in FIG. 1 based on the instructions stored in the memory.

As shown in Figure 3, the user terminal also includes a communication interface 33 for information interaction with other devices. At the same time, the user terminal also includes a bus 34, through which the processor 32, the communication interface 33, and the memory 31 complete communication with each other.

The memory 31 may include high-speed RAM memory, or may also include non-volatile memory (non-volatile memory), such as at least one disk memory. The memory 31 may also be a memory array. The memory 31 may also be divided into blocks, and the blocks may be combined into virtual volumes according to certain rules.

Additionally, processor 32 may be a central processing unit (CPU), or may be an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement embodiments of the present disclosure.

The present disclosure also relates to a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions. When the instructions are executed by a processor, the method related to any embodiment in Figure 1 is implemented.

Figure 4 is a schematic structural diagram of a communication system according to an embodiment of the present disclosure. As shown in Figure 4, the communication system includes a user terminal 41, a TNAP 42, a TNGP entity 43 and a core network device 44. The user terminal 41 is the user terminal related to any embodiment in FIG. 2 or FIG. 3 .

The TNAP 42 is configured to send the registration request to the corresponding TNGP entity 43 after receiving the registration request sent by the user terminal 41 .

The TNGP entity 43 is configured to send the registration request sent by the TNAP 42 to the core network device 44 .

The core network device 44 is configured to perform registration processing according to the registration request, so that the user terminal 41 can access the slice required for the current service after successful registration.

In some embodiments, the core network device is an AMF entity.

Figure 5 is a schematic structural diagram of a communication system according to another embodiment of the present disclosure. The difference between Figure 5 and Figure 4 is that in the embodiment shown in Figure 5, the communication system also includes an HPLMN device 45.

The HPLMN device 45 is configured to, when the user terminal 41 accesses the HPLMN core network, select the HPLMN slice supported by the first TNAP of the credited non-3GPP network in the HPLMN among the HPLMN slices contracted by the user terminal 41, and provide the HPLMN slice to the user. The terminal 41 sends the first ANDSP information, where the first ANDSP information includes the first TNAP and HPLMN slice information supported by the first TNAP.

In addition, the HPLMN device 45 is also configured to send the second ANDSP information to the user terminal 41 when the user terminal 41 accesses the HPLMN core network, where the second ANDSP information includes the credit in each VPLMN of the plurality of VPLMNs. The second TNAP of the non-3GPP network and the VPLMN slice information supported by the second TNAP. According to the roaming agreement between each VPLMN and HPLMN, the VPLMN slice can be mapped to the HPLMN slice signed by the user terminal.

For example, the HPLMN device 45 obtains the second TNAP of the trusted non-3GPP network in each of the multiple VPLMNs and the VPLMN slice information supported by the second TNAP according to the roaming agreement between itself and multiple VPLMNs.

It should be noted that the HPLMN device 45 may send the first ANDSP information and the second ANDSP information to the user terminal respectively, or may send the first ANDSP information and the second ANDSP information together to the user terminal.

In some embodiments, the HPLMN device is a PCF entity in HPLMN.

In other embodiments, as shown in Figure 5, the communication system further includes a VPLMN device 46.

As shown in Figure 5, when the user terminal 41 is in a roaming scenario, the VPLMN device 46 is configured to send the third ANDSP information to the user terminal 41 when the user terminal 41 accesses the VPLMN core network, where the third ANDSP information This includes the third TNAP of the credited non-3GPP network in the VPLMN and the VPLMN slice information supported by the third TNAP. According to the roaming agreement between the VPLMN and the HPLMN, the VPLMN slice can be mapped to the HPLMN slice signed by the user terminal.

In some embodiments, the VPLMN device is a PCF entity in the VPLMN.

FIG. 6 is a schematic flowchart of a method for selecting a credited non-3GPP network according to another embodiment of the present disclosure.

In step 601a, the HPLMN device configures the first TNAP of the trusted non-3GPP network in the HPLMN and its supported HPLMN slice information, and the second TNAP entity of the trusted non-3GPP network in the VPLMN and its supported VPLMN slice information. .

For example, the HPLMN device obtains the second TNAP of the trusted non-3GPP network in each of the multiple VPLMNs and the VPLMN slice information supported by the second TNAP according to the roaming agreement between itself and multiple VPLMNs.

For example, the HPLMN device is a PCF entity in HPLMN.

In step 602a, when the user terminal accesses the HPLMN core network, the HPLMN device selects the HPLMN slice supported by the first TNAP of the credited non-3GPP network in the HPLMN among the HPLMN slices contracted by the user terminal, and sends it to the user terminal. The first ANDSP information includes the first TNAP and HPLMN slice information supported by the first TNAP.

In addition, the HPLMN device also sends the second ANDSP information to the user terminal during the process of the user terminal accessing the HPLMN core network, where the second ANDSP information includes the third credited non-3GPP network in each VPLMN of the plurality of VPLMNs. The second TNAP and the VPLMN slice information supported by the second TNAP. According to the roaming agreement between each VPLMN and HPLMN, the VPLMN slice can be mapped to the HPLMN slice signed by the user terminal.

It should be noted that the HPLMN device may also send the first ANDSP information and the second ANDSP information together to the user terminal.

In step 601b, the VPLMN device configures the third TNAP of the trusted non-3GPP network within the VPLMN and the VPLMN slice information it supports.

For example, the VPLMN device is the PCF entity in the VPLMN.

In step 602b, when the user terminal accesses the VPLMN core network, the VPLMN device sends the third ANDSP information to the user terminal, where the third ANDSP information includes the third TNAP and the third TNAP of the credited non-3GPP network in the VPLMN. According to the VPLMN slice information supported by TNAP, according to the roaming agreement between the VPLMN and the HPLMN, the VPLMN slice can be mapped to the HPLMN slice contracted by the user terminal.

In step 603a, if the user terminal determines to choose to access the credited non-3GPP network in HPLMN, the user terminal selects the first TNAP of the credited non-3GPP network that supports the HPLMN slice from the ANDSP based on the HPLMN slice required for the current service.

In step 604a, the user terminal sends a registration request to the core network device through the first TNAP and the corresponding TNGF entity, so as to access the HPLMN slice after successful registration.

In step 603b, if the user terminal determines to choose to access the credited non-3GPP network in the VPLMN, the user terminal queries the VPLMN slice that has a mapping relationship with the HPLMN slice required for the current service. Select the second TNAP for the credited non-3GPP network that supports VPLMN slicing from the ANDSP.

In step 604b, the user terminal sends a registration request to the core network device through the second TNAP and the corresponding TNGF entity, so as to access the VPLMN slice after successful registration.

By implementing the above embodiments of the present disclosure, the user terminal can accurately select the TNAP associated with the currently required slice according to the TNAP in the ANDSP and the slices supported by the TNAP, thereby accessing the correct credit-granted non-3GPP network.

In some embodiments, the functional units described above can be implemented as a general-purpose processor, a programmable logic controller (PLC), a digital signal processor (Digital signal processor) for performing the functions described in this disclosure. Signal Processor (DSP for short), Application Specific Integrated Circuit (ASIC for short), Field-Programmable Gate Array (FPGA for short) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components or any appropriate combination thereof.

Those of ordinary skill in the art can understand that all or part of the steps to implement the above embodiments can be completed by hardware, or can be completed by instructing relevant hardware through a program. The program can be stored in a computer-readable storage medium. The above-mentioned The storage media mentioned can be read-only memory, magnetic disks or optical disks, etc.

The description of the present disclosure has been presented for the purposes of illustration and description, and is not intended to be exhaustive or to limit the disclosure to the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the disclosure and the practical application, and to enable others of ordinary skill in the art to understand the disclosure and design various embodiments with various modifications as are suited to the particular use contemplated.

Claims (26)

1. A method of selecting a trusted non-3GPP network, performed by a user terminal, comprising:

under the condition of selecting to access to a trusted non-3GPP network, selecting a trusted non-3GPP network access point TNAP supporting the slice from a preconfigured access network discovery and selection strategy ANDSP according to the slice required by the current service;

and sending a registration request to core network equipment through the TNAP and an authorized non-3GPP gateway function TNGF entity so as to access the slice after registration is successful.

2. The method of claim 1, wherein the selecting the TNAP supporting the slice from the preconfigured ANDSP according to the slice required for the current service in the case of selecting access to the trusted non-3GPP network comprises:

in case it is determined that the HPLMN has selected to access to the trusted non-3GPP network at the home public land mobile network, selecting a first TNAP of the trusted non-3GPP network supporting the HPLMN slice from the ANDSP according to the HPLMN slice required for the current service.

3. The method of claim 2, wherein the sending, by the TNAP and TNGF entity, a registration request to a core network device comprises:

and sending a registration request to core network equipment through the first TNAP and TNGF entity so as to access the HPLMN slice after registration is successful.

4. The method of claim 3, wherein the selecting the TNAP supporting the slice from the preconfigured ANDSP according to the slice required for the current service in the case of selecting access to the trusted non-3GPP network comprises:

under the condition that the VPLMN accessing the public land mobile network is determined to select to access to a trusted non-3GPP network, inquiring a VPLMN slice with a mapping relation with an HPLMN slice required by the current service;

and selecting a second TNAP of the non-3GPP network supporting the trust of the VPLMN slice from the ANDSP.

5. The method of claim 4, wherein the sending, by the TNAP and TNGF entity, a registration request to a core network device comprises:

and sending a registration request to core network equipment by using the second TNAP and TNGF entity so as to access the VPLMN slice after registration is successful.

6. The method of any of claims 1-5, further comprising:

and in the process of accessing the HPLMN core network, receiving first ANDSP information sent by HPLMN equipment, wherein the first ANDSP information comprises a first TNAP identification of a trusted non-3GPP network in the HPLMN and HPLMN slice information supported by the first TNAP.

7. The method of claim 6, further comprising:

and in the process of accessing an HPLMN core network, receiving second ANDSP information sent by the HPLMN equipment, wherein the second ANDSP information comprises second TNAP of a trusted non-3GPP network in each VPLMN and VPLMN slice information supported by the second TNAP, and the VPLMN slice can be mapped to an HPLMN slice subscribed by the user terminal according to a roaming protocol between each VPLMN and the HPLMN.

8. The method of claim 6, wherein,

and receiving third ANDSP information sent by VPLMN equipment in the process of accessing a VPLMN core network, wherein the third ANDSP information comprises third TNAP of a trusted non-3GPP network in the VPLMN and VPLMN slice information supported by the third TNAP, and the VPLMN slice can be mapped to an HPLMN slice subscribed by the user terminal according to a roaming protocol between the VPLMN and the HPLMN.

9. The method of claim 8, wherein,

the HPLMN equipment is a policy control function PCF entity in the HPLMN;

the VPLMN equipment is a PCF entity in the VPLMN;

the core network device is an access and mobility management function AMF entity.

10. A user terminal, comprising:

the first processing module is configured to select a trusted non-3GPP network access point TNAP supporting the slice from a pre-configured access network discovery and selection policy ANDSP according to the slice required by the current service under the condition of selecting to access the trusted non-3GPP network;

a second processing module configured to send a registration request to a core network device through the TNAP and an authorized non-3GPP gateway function, TNGF, entity to access the slice after registration is successful.

11. The user terminal of claim 10, wherein,

the first processing module is configured to select a first TNAP of a trusted non-3GPP network supporting a HPLMN slice from the ANDSP according to a HPLMN slice required for current traffic if it is determined that the HPLMN has selected access to the trusted non-3GPP network at the home public land mobile network.

12. The user terminal of claim 11, wherein,

the second processing module is configured to send a registration request to a core network device through the first TNAP and TNGF entity to access the HPLMN slice after registration is successful.

13. The user terminal of claim 12, wherein,

the first processing module is configured to query a VPLMN slice having a mapping relation with an HPLMN slice required for a current service in case that it is determined that a public land mobile network VPLMN is selected to access a trusted non-3GPP network, and select a second TNAP of the non-3GPP network supporting the trust of the VPLMN slice from an ANDSP.

14. The user terminal of claim 13, wherein,

the second processing module is configured to send a registration request to a core network device using the second TNAP and TNGF entity to access the VPLMN slice after registration is successful.

15. The user terminal according to any of claims 10-14, wherein,

the first processing module is configured to receive first ANDSP information sent by an HPLMN device in the process of accessing an HPLMN core network, wherein the first ANDSP information comprises a first TNAP identification of a trusted non-3GPP network in the HPLMN and HPLMN slice information supported by the first TNAP.

16. The user terminal of claim 15, wherein,

the first processing module is configured to receive second ANDSP information sent by the HPLMN device in a process of accessing an HPLMN core network, where the second ANDSP information includes second TNAPs of trusted non-3GPP networks in each VPLMN of a plurality of VPLMNs and VPLMN slice information supported by the second TNAPs, and the VPLMN slices can be mapped onto HPLMN slices subscribed by the user terminal according to a roaming protocol between each VPLMN and the HPLMN.

17. The user terminal of claim 15, wherein,

the first processing module is configured to receive third ANDSP information sent by a VPLMN device in a process of accessing a VPLMN core network, where the third ANDSP information includes third TNAP of a trusted non-3GPP network in the VPLMN and VPLMN slice information supported by the third TNAP, and the VPLMN slice can be mapped onto an HPLMN slice subscribed by the user terminal according to a roaming protocol between the VPLMN and the HPLMN.

18. The user terminal of claim 17, wherein,

the HPLMN equipment is a PCF entity in the HPLMN;

the VPLMN equipment is a PCF entity in the VPLMN;

the core network device is an AMF entity.

19. A user terminal, comprising:

a memory configured to store instructions;

a processor coupled to the memory, the processor configured to perform the method of any of claims 1-9 based on instructions stored by the memory.

20. A communication system, comprising:

the user terminal according to any of claims 10-19;

the TNAP is configured to send the registration request to a TNGP entity after receiving the registration request sent by the user terminal;

a TNGP entity configured to send a registration request sent by the TNAP to a core network device;

and the core network equipment is configured to perform registration processing according to the registration request so that the user terminal accesses the slice required by the current service after registration is successful.

21. The system of claim 20, wherein the system further comprises:

and the HPLMN equipment is configured to select an HPLMN slice supported by a first TNAP of a trusted non-3GPP network in the HPLMN from HPLMN slices subscribed by the user terminal in the process of accessing the HPLMN core network by the user terminal, and send first ANDSP information to the user terminal, wherein the first ANDSP information comprises the first TNAP and the HPLMN slice information supported by the first TNAP.

22. The system of claim 21, wherein,

the HPLMN device is further configured to send second ANDSP information to the user terminal during the process of accessing the HPLMN core network by the user terminal, where the second ANDSP information includes second TNAPs of trusted non-3GPP networks in each of a plurality of VPLMNs and VPLMN slice information supported by the second TNAP, and the VPLMN slices can be mapped onto HPLMN slices subscribed by the user terminal according to a roaming protocol between each VPLMN and the HPLMN.

23. The system of claim 22, wherein,

the HPLMN device is further configured to obtain a second TNAP of the trusted non-3GPP network in each of the plurality of VPLMNs and VPLMN slice information supported by the second TNAP according to a roaming protocol between itself and the plurality of VPLMNs.

24. The system of claim 20, wherein the system further comprises:

and the VPLMN equipment is configured to send third ANDSP information to the user terminal in the process of accessing the user terminal to a VPLMN core network, wherein the third ANDSP information comprises third TNAP of a trusted non-3GPP network in the VPLMN and VPLMN slice information supported by the third TNAP, and the VPLMN slice can be mapped to an HPLMN slice subscribed by the user terminal according to a roaming protocol between the VPLMN and the HPLMN.

25. The system of claim 24, wherein,

the HPLMN equipment is a PCF entity in the HPLMN;

the VPLMN equipment is a PCF entity in the VPLMN;

the core network device is an AMF entity.

26. A non-transitory computer readable storage medium storing computer instructions which, when executed by a processor, implement the method of any one of claims 1-9.