Communication method and communication device

Abstract

The invention provides a communication method and a communication device applied to the field of wireless communication. In the technical scheme provided by the invention, when a user deploys a home base station and the home base station is in a closed mode and there is a demand for allowing a visitor terminal to access the home base station, a management terminal of the home base station can send first information to a first functional network element, and the first information indicates that the visitor terminal which is allowed to access the home base station is allowed to access the first functional network element. Therefore, the first function network element can trigger the flow of updating the signing data of the visitor terminal based on the first information, and the closed access group information corresponding to the home base station is stored in the signing data of the visitor terminal, so that the visitor terminal can access the network through the home base station to obtain network service.

Description

Technical Field

[0001] This application relates to the field of wireless communications, and in particular, to a communication method and a communication device. Background Art

[0002] A user can deploy a home gNB (HgNB) to increase the signal coverage area of an indoor area, and a closed access group mechanism is introduced in the HgNB. When the closed access group mechanism is introduced in the HgNB and the HgNB is in the closed mode, a visiting UE cannot access the HgNB.

[0003] However, in the scenario where the HgNB is deployed and the HgNB is in the closed mode, there is a need to allow a visiting UE to access the HgNB. Therefore, how to enable the visiting UE to access the HgNB has become a technical problem to be solved urgently. Summary of the Invention

[0004] This application provides a communication method and a communication device, so that a visiting terminal can access a home base station.

[0005] In a first aspect, this application provides a communication method, which is applied to a first functional network element. The method includes: receiving first information from a first terminal, where the first information indicates a second terminal allowed to access a first home base station, and the first terminal is a management terminal of the first home base station; sending second information, where the second information indicates that indication information of a first closed access group is saved in the subscription data of the second terminal, and the first closed access group is a closed access group corresponding to the first home base station.

[0006] As an example, this method can be executed by the first functional network element, or can be executed by a chip system, a hardware circuit, and / or a software module applied in the first functional network element.

[0007] As an example, the first functional network element can be an application server (AS) or an application function (AF) network element of a third-party application that provides services for a first home gNB (HgNB). As an example, the first functional network element can be provided by an operator corresponding to the first home base station or a supplier corresponding to the first home base station, and no limitation is made here.

[0008] As an example, the management terminal of the first home base station can be understood as the terminal of a user who purchases or owns the first home base station.

[0009] It should be noted that a closed access group can support the network in performing access control on a terminal, or in other words, the network can perform access control on the terminal through the closed access group. For example, information about the closed access groups allowed to be accessed is saved in the terminal subscription data, and the home base station broadcasts the identification information of the corresponding closed access group. When the closed access groups allowed to be accessed by the terminal correspond to the closed access groups broadcast by the home base station, if the terminal accesses the network through this home base station, the network can allow the terminal to register and access. When the closed access groups allowed to be accessed by the terminal do not correspond to the closed access groups broadcast by the home base station, the network will reject the terminal's registration request. Among them, the correspondence between the closed access groups allowed to be accessed by the terminal and the closed access groups broadcast by the home base station can be understood as that the information about the closed access groups allowed to be accessed by the terminal contains the identification information of the closed access groups broadcast by the home base station.

[0010] In this technical solution, if the first closed access group is the closed access group corresponding to the first home base station, then the first home base station can broadcast the identification information of the first closed access group, or in other words, the identification information of the closed access group broadcast by the first home base station can contain the identification information of the first closed access group.

[0011] It should be noted that from the perspective of the terminal, one or more pieces of information about the closed access groups allowed to be accessed can be saved in the subscription data of a terminal. From the perspective of the closed access group, one closed access group can contain one or more terminals. From the perspective of the home base station, one home base station can broadcast the identification information of one or more closed access groups, or in other words, one home base station can correspond / associate with one or more closed access groups. From the perspective of the closed access group, one closed access group can correspond / associate with one or more home base stations. In some embodiments, there can be multiple cells under the home base station. The broadcast of the identification information of the closed access group by the home base station can be understood as the broadcast of the identification information of the closed access group by the cells under the home base station, which is not limited herein.

[0012] Among them, the closed access group can be referred to as a closed access group (CAG) in the fifth generation (5G) mobile communication system, and can be referred to as a closed subscriber group (CSG) in the fourth generation (4G) mobile communication system. It may have other names in the future sixth generation (6G) mobile communication system, which is not limited herein.

[0013] As an example, the second terminal can be understood as a visitor terminal that is allowed to access the first home base station, or the second terminal can be understood as a visitor terminal that is allowed to connect to the first home base station, or the second terminal can be understood as a visitor terminal that is allowed to access the network through the first home base station.

[0014] In this technical solution, when the first home base station is in the closed mode, information of the closed access group allowed to access is saved in the subscription data of the second terminal, and when the closed access group allowed to access by the second terminal corresponds to the closed access group broadcast by the first home base station, the second terminal is allowed to access the network through the first home base station. Therefore, in a scenario where a user deploys the first home base station and the first home base station is in the closed mode, when there is a need to allow a visitor terminal to access the first home base station, the first terminal can actively send a first piece of information to the first functional network element, where the first piece of information indicates the second terminal allowed to access the first home base station, so that the first functional network element can trigger a process of updating the subscription data of the second terminal based on the first piece of information, so as to save the indication information of the first closed access group in the subscription data of the second terminal, which helps the second terminal to access the network through the first home base station to obtain network services.

[0015] Combined with the first aspect, in some implementation manners of the first aspect, the first piece of information includes the indication information of the first closed access group and the indication information of the second terminal.

[0016] In this implementation manner, the first piece of information may include the indication information of the first closed access group and the indication information of the second terminal. It should be understood that the indication information of the first closed access group can be used to indicate the closed access group corresponding to the first home base station, such as the first closed access group, and the indication information of the second terminal can be used to indicate the second terminal.

[0017] Combined with the first aspect, in some implementation manners of the first aspect, the indication information of the first closed access group includes the identifier of the first closed access group and / or the identifier of the first terminal, and the identifier of the first terminal is used to determine the identifier of the first closed access group.

[0018] In this implementation manner, the indication information of the first closed access group may include the identifier of the first closed access group, such as the identifier (identity, ID) of the first closed access group. Among them, the ID of the first closed access group may be the closed access group ID configured by the operator for the first home base station.

[0019] In this implementation manner, since the first terminal is the management terminal of the first home base station, the closed access group information stored in the subscription data of the first terminal may include the ID of the first closed access group. Therefore, the ID of the first closed access group can be implicitly indicated by the identifier of the first terminal. As an example, the first functional network element may determine the closed access groups allowed to be accessed by the first terminal based on the identifier of the first terminal, and then determine the identifier of the first closed access group.

[0020] Combined with the first aspect, in some implementation manners of the first aspect, the indication information of the second terminal includes the general public subscriber identity (GPSI) of the second terminal and / or the global system for mobile communications (GSM) number.

[0021] In this implementation manner, the second terminal can be indicated by the general public subscription identifier (GSPI) of the second terminal and / or the global system for mobile communications (GSM) number. The GSM number can be understood as the telephone number of the second terminal.

[0022] In some embodiments, the second terminal can also be indicated by the subscription concealed identifier (SUCI) of the second terminal, the 5G globally unique temporary UE identity (5G-GUT), the permanent equipment identifier (PEI), or other identifiers, which are not specifically limited herein.

[0023] Combined with the first aspect, in some implementation manners of the first aspect, the first information further includes the restriction conditions for the second terminal to access the first home base station.

[0024] In this implementation manner, the first information may further include the restriction conditions for the second terminal to access the first home base station, so that the second terminal can only access the first home base station under the restriction conditions.

[0025] Combined with the first aspect, in some implementation manners of the first aspect, the restriction conditions include at least one of the following conditions: usage time, usage duration, usage location, or usage bandwidth.

[0026] In this implementation mode, the usage time can be used to indicate the start time and / or end time when the second terminal is allowed to access the first home base station. For example, when the start time is 9:00 am, it can be considered that the second terminal can only access the first home base station after 9:00 am. The usage duration can be used to indicate the duration for which the second terminal is allowed to access the first home base station. For example, the usage duration can be 120 minutes. The usage location can be used to indicate the location where the second terminal is allowed to access the first home base station. For example, when the location of the second terminal is within a preset area, the second terminal is allowed to access the first home base station. The usage bandwidth can be used to indicate the network bandwidth that the second terminal can use after accessing the first home base station. For example, the usage bandwidth can be 20 megahertz (MHz).

[0027] In a second aspect, the present application provides a communication method, which is applied to a first terminal. The method includes: determining first information, where the first information indicates a second terminal allowed to access a first home base station, and the first terminal is a management terminal of the first home base station; and sending the first information to a first functional network element.

[0028] As an example, this method can be executed by the first terminal, or can be executed by a chip system, a hardware circuit, and / or a software module applied in the first terminal.

[0029] As an example, the management terminal of the first home base station can be understood as the terminal of the user who purchases or owns the first home base station.

[0030] As an example, the second terminal can be understood as a visitor terminal allowed to access the first home base station, or the second terminal can be understood as a visitor terminal allowed to be connected to the first home base station, or the second terminal can be understood as a visitor terminal allowed to access the network through the first home base station.

[0031] As an example, the first functional network element can be an application server (AS) or an application function (AF) network element of a third-party application that provides services for the first home base station (home gNB, HgNB). As an example, the first functional network element can be provided by the operator corresponding to the first home base station or the supplier corresponding to the first home base station, and no limitation is made here.

[0032] In this technical solution, when there is a need to allow a visitor terminal to access the first home base station in a scenario where the user deploys the first home base station and the first home base station is in the closed mode, the first terminal can actively send first information to the first functional network element, where the first information indicates a second terminal allowed to access the first home base station, so that the first functional network element can trigger a process of updating the subscription data of the second terminal based on the first information, thereby saving indication information of the first closed access group in the subscription data of the second terminal, which helps the second terminal access the first home base station to obtain network services.

[0033] Combined with the second aspect, in some implementation manners of the second aspect, the first information includes indication information of the first closed access group and indication information of the second terminal, and the first closed access group is the closed access group corresponding to the first home base station.

[0034] As an example, if the first closed access group is the closed access group corresponding to the first home base station, the first home base station can broadcast the identification information of the first closed access group, or it can be said that the identification information of the closed access group broadcast by the first home base station can include the identification information of the first closed access group.

[0035] In this implementation manner, the first information can include indication information of the first closed access group and indication information of the second terminal. The indication information of the first closed access group can be used to indicate the closed access group corresponding to the first home base station, such as the first closed access group, and the indication information of the second terminal can be used to indicate the second terminal.

[0036] Combined with the second aspect, in some implementation manners of the second aspect, the indication information of the first closed access group includes the identification of the first closed access group and / or the identification of the first terminal, and the identification of the first terminal is used to determine the identification of the first closed access group.

[0037] In this implementation manner, the indication information of the first closed access group can include the identification of the first closed access group, such as the ID of the first closed access group. Among them, the ID of the first closed access group can be the closed access group ID configured by the operator for the first home base station.

[0038] In this implementation manner, since the first terminal is the management terminal of the first home base station, the closed access group information saved in the subscription data of the first terminal can include the ID of the first closed access group. Therefore, the ID of the first closed access group can be implicitly indicated by the identification of the first terminal. As an example, the first functional network element can determine the closed access group allowed to be accessed by the first terminal based on the identification of the first terminal, and then determine the identification of the first closed access group.

[0039] In combination with the second aspect, in some implementations of the second aspect, the indication information of the second terminal includes the GPSI and / or GSM number of the second terminal.

[0040] In this implementation, the second terminal can be indicated by the GSPI and / or GSM number of the second terminal. The GSM number can be understood as the phone number of the second terminal.

[0041] In some embodiments, the second terminal can also be indicated by the SUCI, 5G-GUT, PEI or other identifiers of the second terminal, which is not specifically limited herein.

[0042] In combination with the second aspect, in some implementations of the second aspect, the first information further includes the restriction conditions for the second terminal to access the first home base station.

[0043] In this implementation, the first information can further include the restriction conditions for the second terminal to access the first home base station, so that the second terminal can only access the first home base station under the restriction conditions.

[0044] In combination with the second aspect, in some implementations of the second aspect, the restriction conditions include at least one of the following conditions: usage time, usage duration, usage location, or usage bandwidth.

[0045] In this implementation, the usage time can be used to indicate the start time and / or end time when the second terminal is allowed to access the first home base station. For example, when the start time is 9 am, it can be considered that the second terminal can only access the first home base station after 9 am; the usage duration can be used to indicate the duration for which the second terminal is allowed to access the first home base station. For example, the usage duration can be 120 minutes; the usage location can be used to indicate the location where the second terminal is allowed to access the first home base station. For example, when the location of the second terminal is within a preset area, the second terminal is allowed to access the first home base station; the usage bandwidth can be used to indicate the network bandwidth that the second terminal can use after accessing the first home base station. For example, the usage bandwidth can be 20 MHz.

[0046] In a third aspect, the present application provides a communication method. The method is applied to a first functional network element and includes: receiving first information from a first terminal, where the first information indicates a restriction condition for a visiting terminal to access a first home base station, and the first terminal is a management terminal of the first home base station; receiving third information from a second terminal, where the third information includes a verification condition for the second terminal to access the first home base station, indication information of a first closed access group, and indication information of the second terminal, and the first closed access group is a closed access group corresponding to the first home base station; when the verification condition meets the restriction condition, sending second information, where the second information indicates to save the indication information of the first closed access group in the subscription data of the second terminal.

[0047] As an example, this method can be executed by the first functional network element, or can be executed by a chip system, a hardware circuit, and / or a software module applied in the first functional network element.

[0048] As an example, the first functional network element can be an AS or AF network element of a third-party application that provides services for the first home base station. As an example, the first functional network element can be provided by the operator corresponding to the first home base station or the supplier corresponding to the first home base station, and no limitation is made here.

[0049] As an example, the management terminal of the first home base station can be understood as the terminal of the user who purchases or owns the first home base station.

[0050] It should be noted that the closed access group can support the network to perform access control on the terminal, or in other words, the network can perform access control on the terminal through the closed access group. For example, the information of the closed access group allowed to access is saved in the terminal subscription data, and the home base station broadcasts the identification information of the corresponding closed access group. When the closed access group allowed to access by the terminal corresponds to the closed access group broadcast by the home base station, if the terminal accesses the network through this home base station, the network can allow the terminal to register and access. When the closed access group allowed to access by the terminal does not correspond to the closed access group broadcast by the home base station, the network will reject the registration request of the terminal. Among them, the closed access group allowed to access by the terminal corresponding to the closed access group broadcast by the home base station can be understood as that the information of the closed access group allowed to access by the terminal includes the identification information of the closed access group broadcast by the home base station.

[0051] In this technical solution, since the first closed access group is the closed access group corresponding to the first home base station, the first home base station can broadcast the identification information of the first closed access group, or in other words, the identification information of the closed access group broadcast by the first home base station can include the identification information of the first closed access group.

[0052] It should be noted that, from the perspective of a terminal, the subscription data of a terminal can store the information of one or more permitted closed access groups. From the perspective of a closed access group, a closed access group can include one or more terminals. From the perspective of a femtocell, a femtocell can broadcast the identification information of one or more closed access groups, or in other words, a femtocell can correspond / associate with one or more closed access groups. From the perspective of a closed access group, a closed access group can correspond / associate with one or more femtocells. In some embodiments, a femtocell can have multiple cells below it. The femtocell broadcasts the identification information of the closed access group, which can be understood as the cells under the femtocell broadcasting the identification information of the closed access group, and this is not limited herein.

[0053] Among them, the closed access group can be called CAG in the 5G mobile communication system, CSG in the 4G mobile communication system, and may have other names in the future 6G mobile communication system, which is not limited herein.

[0054] As an example, the second terminal can be understood as a visitor terminal requesting to access the first femtocell, or the second terminal can be understood as a visitor terminal requesting to connect to the first femtocell, or the second terminal can be understood as a visitor terminal requesting to access the network through the first femtocell.

[0055] In this technical solution, when the first femtocell is in the closed mode, the information of the permitted closed access group is stored in the subscription data of the second terminal. And when the closed access group permitted by the second terminal corresponds to the closed access group broadcast by the first femtocell, the second terminal is allowed to access the network through the first femtocell. Therefore, in the scenario where the user deploys the first femtocell and the first femtocell is in the closed mode, when there is a need to allow a visitor terminal to access the first femtocell, the first terminal can send a first message to the first functional network element. The first message indicates the restriction conditions for the visitor terminal to access the first femtocell, so that the first functional network element can use the restriction conditions to verify the verification conditions when the second terminal provides the verification conditions to the first functional network element. If the verification conditions meet the restriction conditions, the first functional network element can trigger the process of updating the subscription data of the second terminal, so as to store the indication information of the first closed access group in the subscription data of the second terminal, which helps the second terminal to access the first femtocell to obtain network services.

[0056] Combined with the third aspect, in some implementation manners of the third aspect, the first message includes the indication information of the first closed access group and the indication information of the restriction conditions.

[0057] In this implementation manner, the first information may include indication information of a first closed access group and indication information of a restriction condition. It should be understood that the indication information of the first closed access group may be used to indicate the closed access group corresponding to the first home base station, such as the first closed access group, and the indication information of the restriction condition is used to indicate the restriction condition for a visitor terminal to access the first home base station.

[0058] Combined with the third aspect, in some implementation manners of the third aspect, the indication information of the first closed access group includes an identifier of the first closed access group and / or an identifier of the first terminal, and the identifier of the first terminal is used to determine the identifier of the first closed access group.

[0059] In this implementation manner, the indication information of the first closed access group may include an identifier of the first closed access group, such as the ID of the first closed access group. Among them, the ID of the first closed access group may be the closed access group ID configured by the operator for the first home base station.

[0060] In this implementation manner, since the first terminal is the management terminal of the first home base station, the closed access group information saved in the subscription data of the first terminal may include the ID of the first closed access group. Therefore, the ID of the first closed access group can be implicitly indicated by the identifier of the first terminal. As an example, the first functional network element may determine the closed access group allowed to be accessed by the first terminal based on the identifier of the first terminal, and further determine the identifier of the first closed access group.

[0061] Combined with the third aspect, in some implementation manners of the third aspect, the restriction condition includes at least one of the following conditions: usage time, usage duration, usage location, usage key, usage password, or usage bandwidth.

[0062] As an example, the key may include a public key and a private key.

[0063] As an example, when the restriction condition includes using a key, the second terminal may use the public key to generate encrypted data. If the first functional network element can decrypt the encrypted data using the private key, it is considered that the second terminal can access the first home base station.

[0064] As an example, when the restriction condition includes using a password, when the second terminal inputs the correct password information, it can be considered that the second terminal can access the first home base station, and the correct password information can be understood as the usage password in the restriction condition.

[0065] As an example, the usage time can be used to indicate the start time and / or end time when the second terminal is allowed to access the first home base station. For example, when the start time is 9:00 am, it can be considered that the second terminal can only access the first home base station after 9:00 am. The usage duration can be used to indicate the duration for which the second terminal is allowed to access the first home base station. For example, the usage duration can be 120 minutes. The usage location can be used to indicate the location where the second terminal is allowed to access the first home base station. For example, when the location of the second terminal is within a preset area, the second terminal is allowed to access the first home base station. The usage bandwidth can be used to indicate the network bandwidth that the second terminal can use after accessing the first home base station. For example, the usage bandwidth can be 20 MHz.

[0066] In combination with the third aspect, in some implementation manners of the third aspect, the method further includes: when the verification condition meets the restriction condition, sending fourth information to the second terminal, where the fourth information indicates that the second terminal is allowed to access the first home base station.

[0067] In this implementation manner, when the first functional network element is an AS, if the verification condition meets the restriction condition, the AS can directly send the fourth information to the second terminal to indicate that the second terminal is allowed to access the first home base station.

[0068] As an example, the fourth information may include the ID of the first closed access group.

[0069] In a fourth aspect, the present application provides a communication method, where the method is applied to a first terminal, and the method includes: determining first information, where the first information indicates the restriction condition for a visitor terminal to access a first home base station, and the first terminal is a management terminal of the first home base station; sending the first information to a first functional network element.

[0070] As an example, this method can be executed by the first terminal, or can be executed by a chip system, a hardware circuit, and / or a software module applied in the first terminal.

[0071] As an example, the management terminal of the first home base station can be understood as the terminal of the user who purchases or owns the first home base station.

[0072] As an example, the first functional network element can be an application server (AS) or an application function (AF) network element of a third-party application that provides services for the first home base station (home gNB, HgNB). As an example, the first functional network element can be provided by the operator corresponding to the first home base station or the supplier corresponding to the first home base station, and no limitation is made here.

[0073] In this technical solution, when there is a need to allow a visitor terminal to access the first home base station in the scenario where the user deploys the first home base station and the first home base station is in the closed mode, the first terminal can send first information to the first functional network element. The first information indicates the restriction conditions for the visitor terminal to access the first home base station, so that the first functional network element can use the restriction conditions to verify the verification conditions when the second terminal provides the verification conditions to the first functional network element. If the verification conditions meet the restriction conditions, the first functional network element can trigger a process to update the subscription data of the second terminal, so as to save the indication information of the first closed access group in the subscription data of the second terminal, which helps the second terminal to access the first home base station to obtain network services. In this technical solution, the first terminal does not need to send the first information to the first functional network element every time there is a need to allow a visitor terminal to access the first home base station, saving power consumption.

[0074] In combination with the fourth aspect, in some implementation manners of the fourth aspect, the first information includes the indication information of the first closed access group and the indication information of the restriction conditions, and the first closed access group is the closed access group corresponding to the first home base station.

[0075] In this implementation manner, since the first closed access group is the closed access group corresponding to the first home base station, the first home base station can broadcast the identification information of the first closed access group, or it can be said that the identification information of the closed access group broadcast by the first home base station can include the identification information of the first closed access group.

[0076] In this implementation manner, the first information can include the indication information of the first closed access group and the indication information of the restriction conditions. It should be understood that the indication information of the first closed access group can be used to indicate the closed access group corresponding to the first home base station, such as the first closed access group, and the indication information of the restriction conditions is used to indicate the restriction conditions for the visitor terminal to access the first home base station.

[0077] In combination with the fourth aspect, in some implementation manners of the fourth aspect, the indication information of the first closed access group includes the identification of the first closed access group and / or the identification of the first terminal, and the identification of the first terminal is used to determine the identification of the first closed access group.

[0078] In this implementation manner, the indication information of the first closed access group can include the identification of the first closed access group, such as the ID of the first closed access group. Among them, the ID of the first closed access group can be the closed access group ID configured by the operator for the first home base station.

[0079] In this implementation manner, since the first terminal is the management terminal of the first home base station, the closed access group information stored in the subscription data of the first terminal may include the ID of the first closed access group. Therefore, the ID of the first closed access group can be implicitly indicated by the identifier of the first terminal. As an example, the first functional network element may determine the closed access groups allowed to be accessed by the first terminal based on the identifier of the first terminal, and then determine the identifier of the first closed access group.

[0080] Combined with the fourth aspect, in some implementation manners of the fourth aspect, the restriction conditions include at least one of the following conditions: usage time, usage duration, usage location, usage key, usage password, or usage bandwidth.

[0081] As an example, the key may include a public key and a private key.

[0082] As an example, when the restriction condition includes using a key, the second terminal may generate encrypted data using the public key. If the first functional network element can decrypt the encrypted data using the private key, it is considered that the second terminal can access the first home base station.

[0083] As an example, when the restriction condition includes using a password, when the second terminal inputs the correct password information, it is considered that the second terminal can access the first home base station. The correct password information can be understood as the usage password in the restriction conditions.

[0084] As an example, the usage time can be used to indicate the start time and / or end time when the second terminal is allowed to access the first home base station. For example, when the start time is 9 am, it can be considered that the second terminal can only access the first home base station after 9 am; the usage duration can be used to indicate the duration for which the second terminal is allowed to access the first home base station. For example, the usage duration can be 120 minutes; the usage location can be used to indicate the location where the second terminal is allowed to access the first home base station. For example, when the location of the second terminal is within a preset area, the second terminal is allowed to access the first home base station; the usage bandwidth can be used to indicate the network bandwidth that the second terminal can use after accessing the first home base station. For example, the usage bandwidth can be 20 MHz.

[0085] In a fifth aspect, the present application provides a communication method, which is applied to a second terminal. The method further includes: sending third information to a first functional network element, where the third information includes verification conditions for the second terminal to access a first home base station, indication information of a first closed access group, and indication information of the second terminal, and the first closed access group is the closed access group corresponding to the first home base station; receiving fourth information from the first functional network element, where the fourth information indicates that the second terminal is allowed to access the first home base station.

[0086] As an example, this method can be executed by a second terminal, or can be executed by a chip system, a hardware circuit, and / or a software module applied to the second terminal.

[0087] As an example, the second terminal can be understood as a visitor terminal requesting to access a first home base station, or the second terminal can be understood as a visitor terminal requesting to connect to a first home base station, or the second terminal can be understood as a visitor terminal requesting to access the network through a first home base station.

[0088] As an example, the first functional network element can be an AS or AF network element of a third-party application that provides services for the first home base station. As an example, the first functional network element can be provided by the operator corresponding to the first home base station or the vendor corresponding to the first home base station, and no limitation is made here.

[0089] In this technical solution, if the first closed access group is the closed access group corresponding to the first home base station, then the first home base station can broadcast the identification information of the first closed access group, or in other words, the identification information of the closed access group broadcast by the first home base station can include the identification information of the first closed access group.

[0090] In this technical solution, when the second terminal needs to access the first home base station to obtain network services, the second terminal can send third information to the first functional network element. The third information indicates the verification conditions for the second terminal to access the first home base station. If the verification conditions reported by the second terminal meet the restriction conditions set by the management terminal of the first home base station, the first functional network element can trigger a process to update the subscription data of the second terminal, so as to save the indication information of the first closed access group in the subscription data of the second terminal, thereby facilitating the second terminal to access the first home base station. In this technical solution, the second terminal can send the third information to the first functional network element at any moment when it needs to access the first home base station to request access to the first home base station, improving the flexibility of the second terminal to access the first home base station.

[0091] Combined with the fifth aspect, in some implementation manners of the fifth aspect, the indication information of the first closed access group includes the identification of the first closed access group and / or the identification of a first terminal. The identification of the first terminal is used to determine the identification of the first closed access group, and the first terminal is the management terminal of the first home base station.

[0092] As an example, the management terminal of the first home base station can be understood as the terminal of the user who purchases or owns the first home base station.

[0093] In this implementation manner, the indication information of the first closed access group can include the identification of the first closed access group, such as the ID of the first closed access group. Among them, the ID of the first closed access group can be the closed access group ID configured by the operator for the first home base station.

[0094] In this implementation manner, since the first terminal is the management terminal of the first home base station, the closed access group information stored in the subscription data of the first terminal may include the ID of the first closed access group. Therefore, the ID of the first closed access group can be implicitly indicated by the identifier of the first terminal. As an example, the first functional network element may determine the closed access groups allowed to be accessed by the first terminal based on the identifier of the first terminal, and then determine the identifier of the first closed access group.

[0095] Combined with the fifth aspect, in some implementation manners of the fifth aspect, the indication information of the second terminal includes the GPSI and / or GSM number of the second terminal.

[0096] In this implementation manner, the second terminal can be indicated by the GSPI and / or GSM number of the second terminal. The GSM number can be understood as the telephone number of the second terminal.

[0097] In some embodiments, the second terminal can also be indicated by the SUCI, 5G-GUT, PEI or other identifiers of the second terminal, which is not specifically limited herein.

[0098] In a sixth aspect, the present application provides a communication method. The method is applied to an access and mobility management function (AMF) network element, and the method includes: sending fifth information to a second functional network element, where the fifth information is used to request to determine whether to allow a second terminal to access a first home base station, and the fifth information includes the indication information of the second terminal; receiving sixth information from the second functional network element, where the sixth information indicates whether to allow the second terminal to access the first home base station.

[0099] As an example, this method may be executed by an access and mobility management function (AMF) network element, or may be executed by a chip system, a hardware circuit, and / or a software module applied in the AMF network element.

[0100] As an example, the second terminal may be understood as a visitor terminal requesting to access the first home base station, or the second terminal may be understood as a visitor terminal requesting to access the first home base station, or the second terminal may be understood as a visitor terminal requesting to access the network through the first home base station.

[0101] As an example, the second functional network element can be understood as a newly added functional network element in the core network of this application. The second functional network element can be used to store the temporary closed access group information of the visiting terminal. The second functional network element can also be referred to as a closed access group management network element, and this application does not make any limitations in this regard. Among them, the temporary closed access group information of the visiting terminal can be understood as the information of the closed access group that the visiting terminal is allowed to access. When the closed access group that the visiting terminal is allowed to access corresponds to the closed access group broadcast by the first home base station, the visiting terminal accesses the network through the first home base station, and the network can allow the visiting terminal to register and access. The closed access group that the terminal is allowed to access corresponds to the closed access group broadcast by the first home base station, which can be understood as that the information of the closed access group that the terminal is allowed to access includes the identification information of the closed access group broadcast by the first home base station.

[0102] In this technical solution, when a second terminal requests to access the first home base station, the AMF network element can send the fifth information to the second functional network element to instruct the second functional network element to determine whether to allow the second terminal to access the first home base station. After determining whether to allow the second terminal to access the first home base station, the second functional network element can send the sixth information to the AMF network element. In this technical solution, the AMF network element can directly determine whether to allow the second terminal to access the first home base station based on the sixth information, without triggering the process of updating the subscription data of the second terminal, thus saving power consumption.

[0103] Combined with the sixth aspect, in some implementation manners of the sixth aspect, the indication information of the second terminal includes the GPSI and / or GSM number of the second terminal.

[0104] In this implementation manner, the second terminal can be indicated by the GSPI and / or GSM number of the second terminal. The GSM number can be understood as the telephone number of the second terminal.

[0105] In some embodiments, the second terminal can also be indicated by the SUCI, 5G-GUT, PEI or other identifiers of the second terminal, and no specific limitations are made here.

[0106] Combined with the sixth aspect, in some implementation manners of the sixth aspect, the fifth information further includes indication information of a first closed access group, and the first closed access group is the closed access group corresponding to the first home base station.

[0107] In this implementation manner, if the first closed access group is the closed access group corresponding to the first home base station, the first home base station can broadcast the identification information of the first closed access group, or in other words, the identification information of the closed access group broadcast by the first home base station can include the identification information of the first closed access group.

[0108] In this implementation manner, the AMF network element may also send indication information of the first closed access group to the second functional network element, so that the second functional network element may determine, based on the indication information of the first closed access group, that the base station requested by the second terminal to access is the first home base station, and determine whether to allow the second terminal to access the first home base station based on the temporarily stored closed access group information of the visiting terminal. Herein, the temporarily stored closed access group information of the visiting terminal may be understood as the information of the closed access groups to which the visiting terminal is allowed to access. In this implementation manner, the second functional network element may store the temporarily stored closed access group information of the visiting terminal, without saving the information of the allowed access closed access groups in the subscription data of the visiting terminal, thereby avoiding triggering the process of updating the subscription data of the second terminal and saving power consumption.

[0109] Combined with the sixth aspect, in some implementation manners of the sixth aspect, the indication information of the first closed access group includes the identifier of the first closed access group and / or the identifier of the first terminal, and the identifier of the first terminal is used to determine the identifier of the first closed access group, and the first terminal is the management terminal of the first home base station.

[0110] As an example, the management terminal of the first home base station may be understood as the terminal of the user who purchases or owns the first home base station.

[0111] In this implementation manner, the indication information of the first closed access group may include the identifier of the first closed access group, such as the ID of the first closed access group. Herein, the ID of the first closed access group may be the closed access group ID configured by the operator for the first home base station.

[0112] In this implementation manner, since the first terminal is the management terminal of the first home base station, the closed access group information stored in the subscription data of the first terminal may include the ID of the first closed access group, so the ID of the first closed access group may be implicitly indicated by the identifier of the first terminal. As an example, the first functional network element may determine the closed access group to which the first terminal is allowed to access based on the identifier of the first terminal, and further determine the identifier of the first closed access group.

[0113] Combined with the sixth aspect, in some implementation manners of the sixth aspect, the sixth information includes indication information on whether to allow the second terminal to access the first home base station and / or the closed access group information to which the second terminal is allowed to access.

[0114] As an example, the sixth piece of information may explicitly indicate whether the second terminal is allowed to access the first home base station. For example, the sixth piece of information may include an indication information allowing the second terminal to access the first home base station, or may include an indication information not allowing the second terminal to access the first home base station. For example, the sixth piece of information may be a field with a length of 1 bit. When the sixth piece of information is "1", it indicates that the second terminal is allowed to access the first home base station. When the sixth piece of information is "0", it indicates that the second terminal is not allowed to access the first home base station; or, when the sixth piece of information is "0", it indicates that the second terminal is allowed to access the first home base station. When the sixth piece of information is "1", it indicates that the second terminal is not allowed to access the first home base station, which is not limited herein.

[0115] As an example, the sixth piece of information may implicitly indicate whether the second terminal is allowed to access the first home base station. For example, when the temporary closed access group information of the visitor terminal stored in the second functional network element includes the temporary closed access group information of the second terminal, the sixth piece of information may include the information of the closed access group to which the second terminal is allowed to access, so that the AMF network element can independently determine whether to allow the second terminal to access the first home base station based on the sixth piece of information.

[0116] Combined with the sixth aspect, in some implementation manners of the sixth aspect, when the sixth piece of information includes the information of the closed access group to which the second terminal is allowed to access, the method further includes: when the information of the closed access group to which the second terminal is allowed to access includes the information of the closed access group corresponding to the first home base station, allowing the second terminal to access the first home base station.

[0117] In this implementation manner, when the sixth piece of information includes the information of the closed access group to which the second terminal is allowed to access, the AMF network element can independently determine whether to allow the second terminal to access the first home base station based on the sixth piece of information. As an example, if the information of the closed access group to which the second terminal is allowed to access includes the identification information of the closed access group broadcast by the first home base station, it is considered that the closed access group to which the second terminal is allowed to access corresponds to the closed access group broadcast by the first home base station, and the second terminal is allowed to access the first home base station. If the information of the closed access group to which the second terminal is allowed to access does not include the identification information of the closed access group broadcast by the first home base station, it is considered that the closed access group to which the second terminal is allowed to access does not correspond to the closed access group broadcast by the first home base station, and the second terminal is not allowed to access the first home base station.

[0118] Combined with the sixth aspect, in some implementation manners of the sixth aspect, before sending the fifth piece of information to the second functional network element, the method further includes: receiving the seventh piece of information from the second terminal, where the seventh piece of information indicates that the second terminal is a visitor terminal; determining the fifth piece of information according to the seventh piece of information.

[0119] In this implementation manner, when the second terminal needs to access the first home base station to obtain network services, the second terminal may send a registration request message to the AMF network element. The registration request message may carry seventh information to indicate that the second terminal is a guest terminal. After determining that the second terminal is a guest terminal, the AMF network element may send fifth information to the second functional network element, thereby saving power consumption.

[0120] In a seventh aspect, the present application provides a communication method. The method is applied to a second functional network element, and the method includes: receiving fifth information from the AMF network element, where the fifth information is used to request to determine whether to allow the second terminal to access the first home base station, and the fifth information includes indication information of the second terminal; sending sixth information to the AMF network element, where the sixth information indicates whether to allow the second terminal to access the first home base station.

[0121] As an example, this method may be executed by the second functional network element, or may be executed by a chip system, a hardware circuit, and / or a software module applied to the second functional network element.

[0122] As an example, the second terminal may be understood as a guest terminal requesting to access the first home base station, or the second terminal may be understood as a guest terminal requesting to access the first home base station, or the second terminal may be understood as a guest terminal requesting to access the network through the first home base station.

[0123] As an example, the second functional network element may be a newly added functional network element in the core network of the present application. The second functional network element may be used to store the temporary closed access group information of the guest terminal. The second functional network element may also be referred to as a closed access group management network element, and the present application does not make any limitations in this regard. Among them, the temporary closed access group information of the guest terminal may be understood as the information of the closed access group to which the guest terminal is allowed to access. When the closed access group to which the guest terminal is allowed to access corresponds to the closed access group broadcast by the first home base station, the guest terminal accesses the network through the first home base station, and the network may allow the guest terminal to register and access. The correspondence between the closed access group to which the terminal is allowed to access and the closed access group broadcast by the first home base station may be understood as that the information of the closed access group to which the terminal is allowed to access includes the identification information of the closed access group broadcast by the first home base station.

[0124] In this technical solution, after receiving the fifth piece of information sent by the AMF network element, the second functional network element can determine that the visiting terminal is the second terminal based on the indication information of the second terminal in the fifth piece of information, and determine whether there is the temporary closed access group information of the second terminal in the stored temporary closed access group information of the visiting terminal, and then can determine whether to allow the second terminal to access the first home base station. For example, if the stored temporary closed access group information of the visiting terminal does not contain the temporary closed access group information of the second terminal, the second terminal is not allowed to access the first home base station; the second functional network element can also send the sixth piece of information to the AMF network element to indicate whether to allow the second terminal to access the first home base station. In this technical solution, there is no need to trigger the process of updating the subscription data of the second terminal, saving power consumption.

[0125] Combined with the seventh aspect, in some implementation manners of the seventh aspect, the fifth piece of information further includes indication information of a first closed access group, and the first closed access group is the closed access group corresponding to the first home base station.

[0126] In this implementation manner, since the first closed access group is the closed access group corresponding to the first home base station, the first home base station can broadcast the identification information of the first closed access group, or the identification information of the closed access group broadcast by the first home base station can include the identification information of the first closed access group.

[0127] In this implementation manner, the second functional network element can determine that the base station requested by the second terminal to access is the first home base station based on the indication information of the first closed access group, and determine whether to allow the second terminal to access the first home base station based on the stored temporary closed access group information of the visiting terminal and the indication information of the first closed access group. In this implementation manner, the second functional network element can store the temporary closed access group information of the visiting terminal, and there is no need to save the information of the allowed access closed access group in the subscription data of the visiting terminal, thus there is no need to trigger the process of updating the subscription data of the second terminal, saving power consumption.

[0128] Combined with the seventh aspect, in some implementation manners of the seventh aspect, the sixth piece of information includes indication information on whether to allow the second terminal to access the first home base station and / or the information on the closed access group allowed to be accessed by the second terminal.

[0129] As an example, the sixth piece of information may explicitly indicate whether to allow the second terminal to access the first home base station. For example, the sixth piece of information may include indication information allowing the second terminal to access the first home base station, or may include indication information not allowing the second terminal to access the first home base station. For example, the sixth piece of information may be a field with a length of 1 bit. When the sixth piece of information is "1", it indicates that the second terminal is allowed to access the first home base station. When the sixth piece of information is "0", it indicates that the second terminal is not allowed to access the first home base station; or, when the sixth piece of information is "0", it indicates that the second terminal is allowed to access the first home base station. When the sixth piece of information is "1", it indicates that the second terminal is not allowed to access the first home base station, which is not limited herein.

[0130] As an example, the sixth piece of information may implicitly indicate whether to allow the second terminal to access the first home base station. For example, when the temporary closed access group information of the visitor terminal stored in the second functional network element includes the temporary closed access group information of the second terminal, the sixth piece of information may include the temporary closed access group information of the second terminal, so that the AMF network element can independently determine whether to allow the second terminal to access the first home base station based on the sixth piece of information.

[0131] In combination with the seventh aspect, in some implementation manners of the seventh aspect, before sending the sixth piece of information to the AMF network element, the method further includes: determining whether to allow the second terminal to access the first home base station based on the fifth piece of information and the closed access group information allowed for access by the second terminal.

[0132] As an example, if the closed access group information allowed for access by the second terminal includes the identification information of the closed access group broadcast by the first home base station, it is considered that the closed access group allowed for access by the second terminal corresponds to the closed access group broadcast by the first home base station, and the second terminal is allowed to access the first home base station. If the closed access group information allowed for access by the second terminal does not include the identification information of the closed access group broadcast by the first home base station, it is considered that the closed access group allowed for access by the second terminal does not correspond to the closed access group broadcast by the first home base station, and the second terminal is not allowed to access the first home base station.

[0133] In combination with the seventh aspect, in some implementation manners of the seventh aspect, the method further includes: receiving first information from a first terminal, where the first information indicates a second terminal allowed to access the first home base station, and the first terminal is a management terminal of the first home base station; and determining the closed access group information allowed for access by the second terminal based on the first information.

[0134] As an example, the management terminal of the first home base station may be understood as the terminal of the user who purchases or owns the first home base station.

[0135] In this implementation method, when there is a need to allow a visitor terminal to access the first home base station in the scenario where the user deploys the first home base station and the first home base station is in the closed mode, the first terminal can actively send a first message to the second functional network element. The first message indicates the second terminal allowed to access the first home base station, so that the second functional network element can determine and store the closed access group information allowed for the second terminal based on the first message for subsequent invocation.

[0136] As an example, the first terminal can send the first message to the second functional network element through the second AMF network element to indicate the second functional network element to determine the closed access group information allowed for the second terminal.

[0137] Combined with the seventh aspect, in some implementation methods of the seventh aspect, the first message includes the indication information of the first closed access group and the indication information of the second terminal.

[0138] In this implementation method, the first message can include the indication information of the first closed access group and the indication information of the second terminal. The indication information of the first closed access group can be used to indicate the closed access group corresponding to the first home base station, such as the first closed access group. The indication information of the second terminal can be used to indicate the second terminal.

[0139] Combined with the seventh aspect, in some implementation methods of the seventh aspect, the indication information of the second terminal includes the GPSI and / or GSM number of the second terminal.

[0140] In this implementation method, the second terminal can be indicated by the GSPI and / or GSM number of the second terminal. The GSM number can be understood as the telephone number of the second terminal.

[0141] In some embodiments, the second terminal can also be indicated by the SUCI, 5G-GUT, PEI or other identifiers of the second terminal, which is not specifically limited here.

[0142] Combined with the seventh aspect, in some implementation methods of the seventh aspect, the indication information of the first closed access group includes the identifier of the first closed access group and / or the identifier of the first terminal, and the identifier of the first terminal is used to determine the identifier of the first closed access group.

[0143] In this implementation method, the indication information of the first closed access group can include the identifier of the first closed access group, such as the ID of the first closed access group. Among them, the ID of the first closed access group can be the closed access group ID configured by the operator for the first home base station.

[0144] In this implementation, since the first terminal is the management terminal of the first home base station, the closed access group information stored in the subscription data of the first terminal may include the ID of the first closed access group. Therefore, the ID of the first closed access group can be implicitly indicated by the identifier of the first terminal. As an example, the second functional network element may determine the closed access groups allowed to be accessed by the first terminal based on the identifier of the first terminal, and then determine the identifier of the first closed access group.

[0145] Combined with the seventh aspect, in some implementations of the seventh aspect, the first information further includes the restriction conditions for the second terminal to access the first home base station.

[0146] In this implementation, the first information may further include the restriction conditions for the second terminal to access the first home base station, so that the second functional network element can save the restriction conditions in the closed access group information allowed to be accessed by the second terminal, and then the second terminal can only access the first home base station under the restriction conditions.

[0147] Combined with the seventh aspect, in some implementations of the seventh aspect, the restriction conditions include at least one of the following conditions: usage time, usage duration, usage location, or usage bandwidth.

[0148] In this implementation, the usage time can be used to indicate the start time and / or end time for allowing the second terminal to access the first home base station. For example, when the start time is 9 am, it can be considered that the second terminal can only access the first home base station after 9 am; the usage duration can be used to indicate the duration for allowing the second terminal to access the first home base station. For example, the usage duration can be 120 minutes; the usage location can be used to indicate the location for allowing the second terminal to access the first home base station. For example, when the location of the second terminal is within a preset area, the second terminal is allowed to access the first home base station; the usage bandwidth can be used to indicate the network bandwidth that can be used by the second terminal after accessing the first home base station. For example, the usage bandwidth can be 20 MHz.

[0149] In an eighth aspect, the present application provides a communication method, which is applied to a first AMF network element. The method includes: receiving seventh information from a second terminal, where the seventh information indicates that the second terminal is a visitor terminal; and determining whether to allow the second terminal to access the first home base station according to the seventh information.

[0150] As an example, this method may be executed by the first AMF network element, or may be executed by a chip system, a hardware circuit, and / or a software module applied in the first AMF network element.

[0151] As an example, the second terminal can be understood as a visitor terminal requesting access to the first home base station, or the second terminal can be understood as a visitor terminal requesting to connect to the first home base station, or the second terminal can be understood as a visitor terminal requesting to access the network through the first home base station.

[0152] In this implementation manner, the first AMF network element can be used to store the temporary closed access group information of the visitor terminal. Among them, the temporary closed access group information of the visitor terminal can be understood as the information of the closed access group that the visitor terminal is allowed to access. When the closed access group that the visitor terminal is allowed to access corresponds to the closed access group broadcast by the first home base station, the visitor terminal accesses the network through the first home base station, and the network can allow the visitor terminal to register and access. The correspondence between the closed access group that the terminal is allowed to access and the closed access group broadcast by the first home base station can be understood as that the information of the closed access group that the terminal is allowed to access includes the identification information of the closed access group broadcast by the first home base station.

[0153] In this technical solution, when the second terminal needs to access the first home base station to obtain network services, the second terminal can send a registration request message to the first AMF network element. The registration request message can carry the seventh information to indicate that the second terminal is a visitor terminal. After determining that the second terminal is a visitor terminal, the first AMF network element can determine whether to allow the second terminal to access the first home base station based on the stored temporary closed access group information of the visitor terminal. As an example, when the stored temporary closed access group information of the visitor terminal does not include the temporary closed access group information of the second terminal, the second terminal is not allowed to access the first home base station; when the stored temporary closed access group information of the visitor terminal includes the temporary closed access group information of the second terminal, and the temporary closed access group information of the second terminal includes the identification information of the closed access group broadcast by the first home base station, the second terminal is allowed to access the first home base station. Among them, the first AMF network element can obtain the identification information of the closed access group broadcast by the first home base from the first home base station. In this technical solution, the first AMF network element can store the temporary closed access group information of the visitor terminal, thus eliminating the need to trigger the process of updating the subscription data of the visitor terminal and saving power consumption.

[0154] Combined with the eighth aspect, in some implementation manners of the eighth aspect, the method further includes: receiving first information from a first terminal, where the first information indicates a visitor terminal allowed to access the first home base station, and the first terminal is a management terminal of the first home base station; determining the closed access group information that the visitor terminal is allowed to access based on the first information.

[0155] As an example, the management terminal of the first home base station can be understood as the terminal of the user who purchases or owns the first home base station.

[0156] In this implementation method, when there is a need to allow a visitor terminal to access the first home base station in the scenario where the user deploys the first home base station and the first home base station is in the closed mode, the first terminal can actively send first information to the first AMF network element. The first information indicates the visitor terminal allowed to access the first home base station, so that the first AMF network element can determine and store the closed access group information allowed for the visitor terminal based on the first information for subsequent invocation.

[0157] In combination with the eighth aspect, in some implementation methods of the eighth aspect, the first information includes the indication information of the first closed access group and the indication information of the visitor terminal, and the first closed access group is the closed access group of the first home base station.

[0158] In this implementation method, the first information may include the indication information of the first closed access group and the indication information of the visitor terminal. The indication information of the first closed access group can be used to indicate the closed access group corresponding to the first home base station, such as the first closed access group cell, and the indication information of the visitor terminal can be used to indicate the visitor terminal.

[0159] In combination with the eighth aspect, in some implementation methods of the eighth aspect, the indication information of the visitor terminal includes the GPSI and / or GSM number of the visitor terminal.

[0160] In this implementation method, the visitor terminal can be indicated by the GSPI and / or GSM number of the visitor terminal, and the GSM number can be understood as the telephone number of the visitor terminal.

[0161] In some embodiments, the visitor terminal can also be indicated by the SUCI, 5G-GUT, PEI or other identifiers of the visitor terminal, which are not specifically limited here.

[0162] In combination with the eighth aspect, in some implementation methods of the eighth aspect, the indication information of the first closed access group includes the identifier of the first closed access group and / or the identifier of the first terminal, and the identifier of the first terminal is used to determine the identifier of the first closed access group.

[0163] In this implementation method, the indication information of the first closed access group may include the identifier of the first closed access group, such as the ID of the first closed access group. Among them, the ID of the first closed access group can be the closed access group ID configured by the operator for the first home base station.

[0164] In this implementation manner, since the first terminal is the management terminal of the first home base station, the closed access group information saved in the subscription data of the first terminal may include the ID of the first closed access group. Therefore, the ID of the first closed access group can be implicitly indicated by the identifier of the first terminal. As an example, the first AMF network element may determine the closed access groups allowed to be accessed by the first terminal based on the identifier of the first terminal, and then determine the identifier of the first closed access group.

[0165] Combined with the eighth aspect, in some implementation manners of the eighth aspect, the first information further includes the restriction conditions for the visitor terminal to access the first home base station.

[0166] In this implementation manner, the first information may further include the restriction conditions for the second terminal to access the first home base station, so that the first AMF network element can save the restriction conditions in the closed access group information allowed to be accessed by the second terminal, so that the second terminal can only access the first home base station under the restriction conditions.

[0167] Combined with the eighth aspect, in some implementation manners of the eighth aspect, the restriction conditions include at least one of the following conditions: usage time, usage duration, usage location, or usage bandwidth.

[0168] In this implementation manner, the usage time can be used to indicate the start time and / or end time when the second terminal is allowed to access the first home base station. For example, when the start time is 9 am, it can be considered that the second terminal can only access the first home base station after 9 am; the usage duration can be used to indicate the duration for which the second terminal is allowed to access the first home base station. For example, the usage duration can be 120 minutes; the usage location can be used to indicate the location where the second terminal is allowed to access the first home base station. For example, when the location of the second terminal is within a preset area, the second terminal is allowed to access the first home base station; the usage bandwidth can be used to indicate the network bandwidth that can be used after the second terminal accesses the first home base station. For example, the usage bandwidth can be 20 MHz.

[0169] In a ninth aspect, the present application provides a communication method, which is applied to a unified data management (UDM) network element. The method includes: receiving second information, where the second information indicates that indication information of a first closed access group is saved in the subscription data of a second terminal, and the first closed access group is the closed access group corresponding to the first home base station; saving the indication information of the first closed access group in the subscription data of the second terminal based on the second information.

[0170] As an example, this method may be executed by a unified data management (UDM) network element, or may be executed by a chip system, a hardware circuit, and / or a software module applied in the UDM network element.

[0171] It should be noted that the closed access group can support the network to perform access control on the terminal, or rather, the network can perform access control on the terminal through the closed access group. For example, the information of the closed access group allowed to access is saved in the terminal subscription data, and the home base station broadcasts the identification information of the corresponding closed access group. When the closed access group allowed to access by the terminal corresponds to the closed access group broadcast by the home base station, if the terminal accesses the network through this home base station, the network can allow the terminal to register and access. When the closed access group allowed to access by the terminal does not correspond to the closed access group broadcast by the home base station, the network will reject the registration request of the terminal. Among them, the fact that the closed access group allowed to access by the terminal corresponds to the closed access group broadcast by the first home base station can be understood as that the information of the closed access group allowed to access by the terminal contains the identification information of the closed access group broadcast by the first home base station.

[0172] In this technical solution, if the first closed access group is the closed access group corresponding to the first home base station, the first home base station can broadcast the identification information of the first closed access group, or rather, the identification information of the closed access group broadcast by the first home base station can contain the identification information of the first closed access group.

[0173] As an example, the second terminal can be understood as a visitor terminal allowed to access the first home base station, or the second terminal can be understood as a visitor terminal allowed to be connected to the first home base station, or the second terminal can be understood as a visitor terminal allowed to access the network through the first home base station.

[0174] In this technical solution, when the first home base station is in the closed mode, the information of the closed access group allowed to access is saved in the subscription data of the second terminal. When the closed access group allowed to access by the second terminal corresponds to the closed access group broadcast by the first home base station, the second terminal is allowed to access the network through the first home base station. Therefore, in the scenario where the user deploys the first home base station and the first home base station is in the closed mode, when there is a need to allow the visitor terminal to access the first home base station, the first terminal can actively report to the first functional network element the restriction conditions for the second terminal or the visitor terminal allowed to access the first home base station, so that the first functional network element can send the second information to the UDM network element to trigger the process of updating the subscription data of the second terminal; correspondingly, after receiving the second information, the UDM network element can update the subscription data of the second terminal based on the second information, that is, save the indication information of the first closed access group in the subscription data of the second terminal, so that the second terminal can access the network through the first home base station to obtain network services.

[0175] Combined with the ninth aspect, in some implementation manners of the ninth aspect, the second information includes the indication information of the first closed access group and the indication information of the second terminal.

[0176] In this implementation manner, the first information may include indication information of the first closed access group and indication information of the second terminal. It should be understood that the indication information of the first closed access group can be used to indicate the closed access group corresponding to the first home base station, such as the first closed access group, and the indication information of the second terminal can be used to indicate the second terminal.

[0177] In combination with the ninth aspect, in some implementation manners of the ninth aspect, the indication information of the second terminal includes the GPSI and / or GSM number of the second terminal.

[0178] In this implementation manner, the second terminal can be indicated by the GSPI and / or GMS number of the second terminal, and the GSM number can be understood as the telephone number of the second terminal.

[0179] In some embodiments, the second terminal can also be indicated by the SUCI, 5G-GUT, PEI or other identifiers of the second terminal, which is not specifically limited herein.

[0180] In combination with the ninth aspect, in some implementation manners of the ninth aspect, the indication information of the first closed access group includes the identifier of the first closed access group and / or the identifier of the first terminal, and the identifier of the first terminal is used to determine the identifier of the first closed access group, and the first terminal is the management terminal of the first home base station.

[0181] In this implementation manner, the indication information of the first closed access group may include the identifier of the first closed access group, such as the ID of the first closed access group. Among them, the ID of the first closed access group may be the closed access group ID configured by the operator for the first home base station.

[0182] In this implementation manner, since the first terminal is the management terminal of the first home base station, the closed access group information saved in the subscription data of the first terminal may include the ID of the first closed access group. Therefore, the ID of the first closed access group can be implicitly indicated by the identifier of the first terminal. As an example, the first functional network element may determine the closed access group to which the first terminal is allowed to access based on the identifier of the first terminal, and then determine the identifier of the first closed access group.

[0183] In combination with the ninth aspect, in some implementation manners of the ninth aspect, the second information further includes the restriction conditions for the second terminal to access the first home base station.

[0184] In this implementation manner, the first information may further include the restriction conditions for the second terminal to access the first home base station, so that the UDM network element can save the restriction conditions in the closed access group information or subscription data allowed for the second terminal to access, and further enable the second terminal to access the first home base station only under the restriction conditions.

[0185] In combination with the ninth aspect, in some implementations of the ninth aspect, the restriction conditions include at least one of the following conditions: usage time, usage duration, usage location, or usage bandwidth.

[0186] In this implementation, the usage time can be used to indicate the start time and / or end time when the second terminal is allowed to access the first home base station. For example, when the start time is 9 am, it can be considered that the second terminal can only access the first home base station after 9 am; the usage duration can be used to indicate the duration for which the second terminal is allowed to access the first home base station. For example, the usage duration can be 120 minutes; the usage location can be used to indicate the location where the second terminal is allowed to access the first home base station. For example, when the location of the second terminal is within a preset area, the second terminal is allowed to access the first home base station; the usage bandwidth can be used to indicate the network bandwidth that can be used after the second terminal accesses the first home base station. For example, the usage bandwidth can be 20 MHz.

[0187] In combination with the ninth aspect, in some implementations of the ninth aspect, the method further includes: sending an eighth message, where the eighth message includes indication information of the first closed access group.

[0188] In this implementation, when the subscribed data stored in the UDM network element changes, the UDM network element can trigger a UE configuration update (UCU) process to update the latest subscribed data to the second terminal. For example, the UDM network element can send an eighth message to the second terminal to indicate the closed access group information that the second terminal is allowed to access. Among them, the eighth message can include indication information of the first closed access group, such as the identifier (such as ID) of the first closed access group. It should be understood that the closed access group information that the second terminal is allowed to access can include information of the first closed access group, such as the identifier of the first closed access group.

[0189] In a tenth aspect, the present application provides a communication device, which includes various modules for implementing the method in the first aspect or any one of its implementations, and each module can be implemented in the form of hardware and / or software.

[0190] For example, the device may include: a receiving module and a sending module. The receiving module is configured to receive a first message from a first terminal, where the first message indicates a second terminal allowed to access a first home base station, and the first terminal is a management terminal of the first home base station; the sending module is configured to send a second message, where the second message indicates that indication information of a first closed access group is stored in the subscribed data of the second terminal, and the first closed access group is a closed access group corresponding to the first home base station.

[0191] In combination with the tenth aspect, in certain implementations of the tenth aspect, the first information includes indication information of the first closed access group and indication information of the second terminal.

[0192] In combination with the tenth aspect, in certain implementations of the tenth aspect, the indication information of the first closed access group includes the identifier of the first closed access group and / or the identifier of the first terminal, and the identifier of the first terminal is used to determine the identifier of the first closed access group.

[0193] In combination with the tenth aspect, in certain implementations of the tenth aspect, the indication information of the second terminal includes the GPSI and / or GSM number of the second terminal.

[0194] In combination with the tenth aspect, in certain implementations of the tenth aspect, the first information further includes the restriction conditions for the second terminal to access the first home base station.

[0195] In combination with the tenth aspect, in certain implementations of the tenth aspect, the restriction conditions include at least one of the following conditions: usage time, usage duration, usage location, or usage bandwidth.

[0196] The eleventh aspect provides a communication device, which includes various modules for implementing the method in the second aspect or any one of its implementations, and each module can be implemented in the form of hardware and / or software.

[0197] For example, the device may include a processing module and a sending module. The processing module is used to determine the first information, where the first information indicates a second terminal allowed to access the first home base station, and the first terminal is the management terminal of the first home base station; the sending module is used to send the first information to the first functional network element.

[0198] In combination with the eleventh aspect, in certain implementations of the eleventh aspect, the first information includes indication information of the first closed access group and indication information of the second terminal, and the first closed access group is the closed access group corresponding to the first home base station.

[0199] In combination with the eleventh aspect, in certain implementations of the eleventh aspect, the indication information of the first closed access group includes the identifier of the first closed access group and / or the identifier of the first terminal, and the identifier of the first terminal is used to determine the identifier of the first closed access group.

[0200] In combination with the eleventh aspect, in certain implementations of the eleventh aspect, the indication information of the second terminal includes the GPSI and / or GSM number of the second terminal.

[0201] In combination with the eleventh aspect, in some implementations of the eleventh aspect, the first information further includes the restriction conditions for the second terminal to access the first home base station.

[0202] In combination with the eleventh aspect, in some implementations of the eleventh aspect, the restriction conditions include at least one of the following conditions: usage time, usage duration, usage location, or usage bandwidth.

[0203] The twelfth aspect provides a communication device, which includes respective modules for implementing the method in the third aspect or any one of its implementations, and each module can be implemented in the form of hardware and / or software.

[0204] For example, the device may include: a receiving module and a sending module. The receiving module is configured to receive first information from a first terminal, where the first information indicates the restriction conditions for a visitor terminal to access a first home base station, and the first terminal is the management terminal of the first home base station; the receiving module is further configured to receive third information from a second terminal, where the third information includes the verification conditions for the second terminal to access the first home base station, the indication information of a first closed access group, and the indication information of the second terminal, and the first closed access group is the closed access group corresponding to the first home base station; the sending module is configured to send second information indicating that the indication information of the first closed access group is saved in the subscription data of the second terminal when the verification conditions meet the restriction conditions.

[0205] In combination with the twelfth aspect, in some implementations of the twelfth aspect, the first information includes the indication information of the first closed access group and the indication information of the restriction conditions.

[0206] In combination with the twelfth aspect, in some implementations of the twelfth aspect, the indication information of the first closed access group includes the identifier of the first closed access group and / or the identifier of the first terminal, and the identifier of the first terminal is used to determine the identifier of the first closed access group.

[0207] In combination with the twelfth aspect, in some implementations of the twelfth aspect, the restriction conditions include at least one of the following conditions: usage time, usage duration, usage location, usage key, usage password, or usage bandwidth.

[0208] In combination with the twelfth aspect, in some implementations of the twelfth aspect, the sending module is further configured to send fourth information to the second terminal indicating that the second terminal is allowed to access the first home base station when the verification conditions meet the restriction conditions.

[0209] In a thirteenth aspect, the present application provides a communication device, which includes various modules for implementing the method in the fourth aspect or any one of its implementation manners, and each module can be implemented in the form of hardware and / or software.

[0210] For example, the device may include: a processing module and a sending module. The processing module is configured to determine first information, where the first information indicates a restriction condition for a visitor terminal to access a first home base station, and the first terminal is a management terminal of the first home base station; the sending module is configured to send the first information to a first functional network element.

[0211] In combination with the thirteenth aspect, in some implementation manners of the thirteenth aspect, the first information includes indication information of a first closed access group and indication information of the restriction condition, and the first closed access group is a closed access group corresponding to the first home base station.

[0212] In combination with the thirteenth aspect, in some implementation manners of the thirteenth aspect, the indication information of the first closed access group includes an identifier of the first closed access group and / or an identifier of the first terminal, and the identifier of the first terminal is used to determine the identifier of the first closed access group.

[0213] In combination with the thirteenth aspect, in some implementation manners of the thirteenth aspect, the restriction condition includes at least one of the following conditions: usage time, usage duration, usage location, usage key, usage password, or usage bandwidth.

[0214] In a fourteenth aspect, the present application provides a communication device, which includes various modules for implementing the method in the fifth aspect or any one of its implementation manners, and each module can be implemented in the form of hardware and / or software.

[0215] For example, the device may include: a sending module and a receiving module. The sending module is configured to send third information to a first functional network element, where the third information includes a verification condition for a second terminal to access a first home base station, indication information of a first closed access group, and indication information of the second terminal, and the first closed access group is a closed access group corresponding to the first home base station; the receiving module is configured to receive fourth information from the first functional network element, and the fourth information indicates that the second terminal is allowed to access the first home base station.

[0216] In combination with the fourteenth aspect, in some implementation manners of the fourteenth aspect, the indication information of the first closed access group includes an identifier of the first closed access group and / or an identifier of a first terminal, the identifier of the first terminal is used to determine the identifier of the first closed access group, and the first terminal is a management terminal of the first home base station.

[0217] In combination with the fourteenth aspect, in some implementations of the fourteenth aspect, the indication information of the second terminal includes the GPSI and / or GSM number of the second terminal.

[0218] A fifteenth aspect provides a communication device, which includes various modules for implementing the method in the sixth aspect or any one of its implementations, and each module can be implemented in the form of hardware and / or software.

[0219] For example, the device may include a sending module and a receiving module. The sending module is used to send fifth information to a second functional network element, where the fifth information is used to request determination of whether to allow a second terminal to access a first home base station, and the fifth information includes the indication information of the second terminal; the receiving module is used to receive sixth information from the second functional network element, and the sixth information indicates whether to allow the second terminal to access the first home base station.

[0220] In combination with the fifteenth aspect, in some implementations of the fifteenth aspect, the indication information of the second terminal includes the GPSI and / or GSM number of the second terminal.

[0221] In combination with the fifteenth aspect, in some implementations of the fifteenth aspect, the fifth information further includes indication information of a first closed access group, and the first closed access group is the closed access group corresponding to the first home base station.

[0222] In combination with the fifteenth aspect, in some implementations of the fifteenth aspect, the indication information of the first closed access group includes the identifier of the first closed access group and / or the identifier of a first terminal, and the identifier of the first terminal is used to determine the identifier of the first closed access group, and the first terminal is the management terminal of the first home base station.

[0223] In combination with the fifteenth aspect, in some implementations of the fifteenth aspect, the sixth information includes indication information on whether to allow the second terminal to access the first home base station and / or the closed access group information to which the second terminal is allowed to access.

[0224] In combination with the fifteenth aspect, in some implementations of the fifteenth aspect, the device may further include a processing module. The processing module is used to allow the second terminal to access the first home base station when the sixth information includes the closed access group information to which the second terminal is allowed to access and the closed access group information to which the second terminal is allowed to access includes the closed access group information corresponding to the first home base station.

[0225] In combination with the fifteenth aspect, in some implementations of the fifteenth aspect, the receiving module is further configured to receive seventh information, where the seventh information indicates that the second terminal is a visitor terminal; the processing module is further configured to determine the fifth information according to the seventh information.

[0226] The sixteenth aspect provides a communication device, which includes each module for implementing the method in the seventh aspect or any one of its implementations, and each module can be implemented in the form of hardware and / or software.

[0227] For example, the device may include a receiving module and a sending module. The receiving module is configured to receive fifth information from a first AMF network element, where the fifth information is used to request to determine whether to allow a second terminal to access a first home base station, and the fifth information includes indication information of the second terminal; the sending module is configured to send sixth information to the first AMF network element, where the sixth information indicates whether to allow the second terminal to access the first home base station.

[0228] In combination with the sixteenth aspect, in some implementations of the sixteenth aspect, the fifth information further includes indication information of a first closed access group, and the first closed access group is the closed access group corresponding to the first home base station.

[0229] In combination with the sixteenth aspect, in some implementations of the sixteenth aspect, the sixth information includes indication information on whether to allow the second terminal to access the first home base station and / or information on the closed access group to which the second terminal is allowed to access.

[0230] In combination with the sixteenth aspect, in some implementations of the sixteenth aspect, the device may further include a processing module. The processing module is configured to determine whether to allow the second terminal to access the first home base station based on the fifth information and the information on the closed access group to which the second terminal is allowed to access before sending the sixth information to the first AMF network element.

[0231] In combination with the sixteenth aspect, in some implementations of the sixteenth aspect, the receiving module is further configured to receive first information from a first terminal, where the first information indicates a second terminal allowed to access the first home base station, and the first terminal is a management terminal of the first home base station; the processing module is further configured to determine the information on the closed access group to which the second terminal is allowed to access based on the first information.

[0232] In combination with the sixteenth aspect, in some implementations of the sixteenth aspect, the first information includes indication information of the first closed access group and indication information of the second terminal.

[0233] In combination with the sixteenth aspect, in certain implementations of the sixteenth aspect, the indication information of the second terminal includes the GPSI and / or GSM number of the second terminal.

[0234] In combination with the sixteenth aspect, in certain implementations of the sixteenth aspect, the indication information of the first closed access group includes the identifier of the first closed access group and / or the identifier of the first terminal, and the identifier of the first terminal is used to determine the identifier of the first closed access group.

[0235] In combination with the sixteenth aspect, in certain implementations of the sixteenth aspect, the first information further includes the restriction conditions for the second terminal to access the first home base station.

[0236] In combination with the sixteenth aspect, in certain implementations of the sixteenth aspect, the restriction conditions include at least one of the following conditions: usage time, usage duration, usage location, or usage bandwidth.

[0237] The seventeenth aspect provides a communication device. The device includes various modules for implementing the method in the eighth aspect or any one of its implementations, and each module can be implemented in the form of hardware and / or software.

[0238] For example, the device may include a receiving module and a processing module. The receiving module is configured to receive the seventh information from the second terminal, and the seventh information indicates that the second terminal is a visitor terminal; the processing module is configured to determine whether to allow the second terminal to access the first home base station according to the seventh information.

[0239] In combination with the seventeenth aspect, in certain implementations of the seventeenth aspect, the receiving module is further configured to receive the first information from the first terminal, and the first information indicates the visitor terminals allowed to access the first home base station, and the first terminal is the management terminal of the first home base station; the processing module is further configured to determine the closed access group information allowed for the visitor terminal to access based on the first information.

[0240] In combination with the seventeenth aspect, in certain implementations of the seventeenth aspect, the first information includes the indication information of the first closed access group and the indication information of the visitor terminal, and the first closed access group is the closed access group of the first home base station.

[0241] In combination with the seventeenth aspect, in certain implementations of the seventeenth aspect, the indication information of the visitor terminal includes the GPSI and / or GSM number of the visitor terminal.

[0242] In combination with the seventeenth aspect, in certain implementations of the seventeenth aspect, the indication information of the first closed access group includes the identifier of the first closed access group and / or the identifier of the first terminal, and the identifier of the first terminal is used to determine the identifier of the first closed access group.

[0243] In combination with the seventeenth aspect, in certain implementations of the seventeenth aspect, the first information further includes the restriction conditions for the visiting terminal to access the first home base station.

[0244] In combination with the seventeenth aspect, in certain implementations of the seventeenth aspect, the restriction conditions include at least one of the following conditions: usage time, usage duration, usage location, or usage bandwidth.

[0245] The eighteenth aspect provides a communication device, which includes various modules for implementing the method in the ninth aspect or any one of its implementations, and each module can be implemented in the form of hardware and / or software.

[0246] For example, the device may include: a receiving module and a processing module. The receiving module is configured to receive second information, where the second information indicates that indication information of a first closed access group is saved in the subscription data of a second terminal, and the first closed access group is the closed access group corresponding to the first home base station; the processing module is configured to save the indication information of the first closed access group in the subscription data of the second terminal based on the second information.

[0247] In combination with the eighteenth aspect, in certain implementations of the eighteenth aspect, the second information includes the indication information of the first closed access group and the indication information of the second terminal.

[0248] In combination with the eighteenth aspect, in certain implementations of the eighteenth aspect, the indication information of the second terminal includes the GPSI and / or GSM number of the second terminal.

[0249] In combination with the eighteenth aspect, in certain implementations of the eighteenth aspect, the indication information of the first closed access group includes the identifier of the first closed access group and / or the identifier of a first terminal, the identifier of the first terminal is used to determine the identifier of the first closed access group, and the first terminal is the management terminal of the first home base station.

[0250] In combination with the eighteenth aspect, in certain implementations of the eighteenth aspect, the second information further includes the restriction conditions for the second terminal to access the first home base station.

[0251] In combination with the eighteenth aspect, in certain implementations of the eighteenth aspect, the restriction conditions include at least one of the following conditions: usage time, usage duration, usage location, or usage bandwidth.

[0252] In combination with the eighteenth aspect, in some implementations of the eighteenth aspect, the apparatus may further include: a sending module. The sending module is configured to send eighth information, where the eighth information includes indication information of the first closed access group.

[0253] A nineteenth aspect provides a communication apparatus, including a processor, which may be coupled to a memory and is configured to call program code in the memory to execute the method as described in the first aspect or any one of its possible implementations. Optionally, the apparatus further includes a memory. Optionally, the apparatus further includes a communication interface, and the processor is coupled to the communication interface.

[0254] As an example, the apparatus may be a first functional network element, or a chip system, a hardware circuit, and / or a software module applied to the first functional network element.

[0255] A twentieth aspect provides a communication apparatus, including a processor, which may be coupled to a memory and is configured to call program code in the memory to execute the method as described in the second aspect or any one of its possible implementations. Optionally, the apparatus further includes a memory. Optionally, the apparatus further includes a communication interface, and the processor is coupled to the communication interface.

[0256] As an example, the apparatus may be a first terminal, or a chip system, a hardware circuit, and / or a software module applied to the first terminal.

[0257] A twenty - first aspect provides a communication apparatus, including a processor, which may be coupled to a memory and is configured to call program code in the memory to execute the method as described in the third aspect or any one of its possible implementations. Optionally, the apparatus further includes a memory. Optionally, the apparatus further includes a communication interface, and the processor is coupled to the communication interface.

[0258] As an example, the apparatus may be a first functional network element, or a chip system, a hardware circuit, and / or a software module applied to the first functional network element.

[0259] A twenty - second aspect provides a communication apparatus, including a processor, which may be coupled to a memory and is configured to call program code in the memory to execute the method as described in the fourth aspect or any one of its possible implementations. Optionally, the apparatus further includes a memory. Optionally, the apparatus further includes a communication interface, and the processor is coupled to the communication interface.

[0260] As an example, the apparatus may be a first terminal, or a chip system, a hardware circuit, and / or a software module applied to the first terminal.

[0261] In a twenty-third aspect, the present application provides a communication device, including a processor, which can be coupled to a memory and is configured to call program code in the memory to execute the method described in the fifth aspect or any one of its possible implementation manners. Optionally, the device further includes a memory. Optionally, the device further includes a communication interface, and the processor is coupled to the communication interface.

[0262] As an example, the device can be a second terminal, or a chip system, a hardware circuit, and / or a software module applied to the second terminal.

[0263] In a twenty-fourth aspect, the present application provides a communication device, including a processor, which can be coupled to a memory and is configured to call program code in the memory to execute the method described in the sixth aspect or any one of its possible implementation manners. Optionally, the device further includes a memory. Optionally, the device further includes a communication interface, and the processor is coupled to the communication interface.

[0264] As an example, the device can be an AMF network element, or a chip system, a hardware circuit, and / or a software module applied to the AMF network element.

[0265] In a twenty-fifth aspect, the present application provides a communication device, including a processor, which can be coupled to a memory and is configured to call program code in the memory to execute the method described in the seventh aspect or any one of its possible implementation manners. Optionally, the device further includes a memory. Optionally, the device further includes a communication interface, and the processor is coupled to the communication interface.

[0266] As an example, the device can be a second functional network element, or a chip system, a hardware circuit, and / or a software module applied to the second functional network element.

[0267] In a twenty-sixth aspect, the present application provides a communication device, including a processor, which can be coupled to a memory and is configured to call program code in the memory to execute the method described in the eighth aspect or any one of its possible implementation manners. Optionally, the device further includes a memory. Optionally, the device further includes a communication interface, and the processor is coupled to the communication interface.

[0268] As an example, the device can be a first AMF network element, or a chip system, a hardware circuit, and / or a software module applied to the first AMF network element.

[0269] In a twenty-seventh aspect, the present application provides a communication device, including a processor, which can be coupled to a memory and is configured to call program code in the memory to execute the method described in the ninth aspect or any one of its possible implementation manners. Optionally, the device further includes a memory. Optionally, the device further includes a communication interface, and the processor is coupled to the communication interface.

[0270] As an example, the device may be a UDM network element, or a chip system, a hardware circuit, and / or a software module applied to the UDM network element.

[0271] In a twenty-eighth aspect, the present application provides a communication system, which includes the device in the tenth aspect or the nineteenth aspect, includes the device in the eleventh aspect or the twentieth aspect, includes the device in the twelfth aspect or the twenty-first aspect, includes the device in the thirteenth aspect or the twenty-second aspect, includes the device in the fourteenth aspect or the twenty-third aspect, includes the device in the fifteenth aspect or the twenty-fourth aspect, includes the device in the sixteenth aspect or the twenty-fifth aspect, includes the device in the seventeenth aspect or the twenty-sixth aspect, and includes the device in the eighteenth aspect or the twenty-seventh aspect.

[0272] In a twenty-ninth aspect, the present application provides a computer program product containing instructions, which, when run on a computer, causes the computer to execute the method described in any one of the first aspect to the ninth aspect or any possible implementation manner in any one of them.

[0273] In a thirtieth aspect, the present application provides a computer-readable medium, which stores program code for a device to execute, and the program code includes instructions for executing the method described in any one of the first aspect to the ninth aspect or any possible implementation manner in any one of them.

[0274] For the technical effects that can be achieved by any one of the tenth aspect to the thirtieth aspect and any possible design in any one of them, please refer to the technical effects that can be brought by the first aspect to the ninth aspect, and will not be repeated here. Description of the Drawings

[0275] Figure 1 Schematic diagram of the network architecture of a communication system provided in an embodiment of the present application;

[0276] Figure 2 Schematic illustration of another communication system;

[0277] Figure 3 Schematic illustration of a communication method provided in an embodiment of the present application;

[0278] Figure 4 Schematic illustration of a communication method provided in another embodiment of the present application;

[0279] Figure 5 Schematic illustration of a communication method provided in yet another embodiment of the present application;

[0280] Figure 6 Schematic illustration of a communication method provided for another embodiment of the present application;

[0281] Figure 7 Schematic illustration of a communication method provided for yet another embodiment of the present application;

[0282] Figure 8 Schematic illustration of a communication method provided for another embodiment of the present application;

[0283] Figure 9 Schematic illustration of a communication method provided for yet another embodiment of the present application;

[0284] Figure 10 Schematic illustration of a communication method provided for another embodiment of the present application;

[0285] Figure 11 Schematic illustration of a communication method provided for yet another embodiment of the present application;

[0286] Figure 12 Schematic structural diagram of a communication device provided for an embodiment of the present application;

[0287] Figure 13 Schematic structural diagram of a communication device provided for another embodiment of the present application. Detailed implementation manners

[0288] Here, the exemplary embodiments will be described in detail, and the examples are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0289] In order to facilitate a clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, terms such as "first" and "second" are used to distinguish the same items or similar items with basically the same functions and roles. Those skilled in the art can understand that the terms "first" and "second" do not limit the quantity and execution order, and the terms "first" and "second" do not necessarily limit being different.

[0290] It should be noted that in the embodiments of the present application, words such as "exemplary" or "for example" are used to give examples, illustrations or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0291] In the embodiments of the present application, "at least one" means one or more, and "a plurality" means two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone, where A and B may be singular or plural. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. "At least one (item)" or a similar expression thereof refers to any combination of these items, including any combination of single item (s) or plural items (s). For example, at least one (item) of a, b, or c may represent: a, b, c, a - b, a - c, b - c, or a - b - c, where a, b, and c may be single or multiple.

[0292] The technical solutions provided by this application can be applied to various communication systems, including but not limited to: narrow band-internet of things (NB-IoT), global system for mobile communications (GSM), enhanced data rate for GSM evolution (EDGE), wideband code division multiple access (WCDMA), code division multiple access 2000 (CDMA2000), time division-synchronization code division multiple access (TD-SCDMA), wireless fidelity (WIFI), 3rd generation (3G) mobile communication system, long term evolution (LTE) system, LTE advanced (LTE-A) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), 4th generation (4G) mobile communication system, 5th generation (5G) mobile communication system, three application scenarios of 5G new radio (NR) communication system: enhanced mobile broadband (eMBB), ultra-reliable and low latency communications (URLLC), and massive machine type communication (mMTC), as well as future 6th generation (6G) mobile communication system, such as: high frequency, terahertz, optical communication, etc. This application does not make specific restrictions on this.

[0293] The technical solution provided by this application can be applied to various communication systems, including but not limited to: narrow band-internet of things (NB-IoT) systems, long term evolution (LTE) systems, LTE advanced (LTE-A) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD), 5th generation (5G) mobile communication systems or new radio (NR), or other evolved communication systems, etc. 5G systems typically include the following three major application scenarios: enhanced mobile broadband (eMBB), ultra-reliable and low latency communications (URLLC), and massive machine type of communication (mMTC).

[0294] Taking 5G as an example, Figure 1 is a schematic diagram of the network architecture of a communication system provided by an embodiment of this application. As Figure 1 shown, the communication system includes terminal devices, access network devices, core network devices, and data networks.

[0295] Among them, the terminal device can also be referred to as a user equipment (UE), which is a device that provides voice / data connectivity to users. Currently, some examples of terminal devices are: mobile phone, tablet computer, laptop computer, handheld computer, mobile internet device (MID), wearable device, virtual reality (VR) device, augmented reality (AR) device, wireless terminal in industrial control, wireless terminal in self-driving, wireless terminal in remote medical surgery, wireless terminal in smart grid, wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home, cellular phone, cordless phone, session initiation protocol (SIP) phone, wireless local loop (WLL) station, personal digital assistant (PDA), handheld device with wireless communication function, computing device or other processing devices connected to a wireless modem, in-vehicle device, wearable device, etc. The embodiments of the present application do not make specific limitations on this.

[0296] The access network device can be a (radio) access network ((R)AN) for implementing functions related to wireless access and is located between the UE and the core network (CN). As an example, the (R)AN can be a base station, a relay station, or an access point. The base station can be a base transceiver station (BTS) in a global system for mobile communication (GSM) or a code division multiple access (CDMA) network, can also be a node base station (NB) in a wideband code division multiple access (WCDMA), can also be an evolutional NB (eNB or eNodeB) in a long term evolution (LTE), can also be a radio controller in a cloud radio access network (CRAN) scenario, can also be a base station device in a future 5G network or an access network device in a future evolved PLMN network, and can also be a wearable device or a vehicle-mounted device.

[0297] The core network device includes at least one of the following functional network elements: an access and mobility management function (AMF) network element, a session management function (SMF) network element, a policy control function (PCF) network element, an application function (AF) network element, a network slice selection function (NSSF) network element, an authentication server function (AUSF) network element, a unified data management (UDM) network element, and a UPF network element.

[0298] As an example, the AMF network element, which can also be referred to as the access and mobility management function, access and mobility management device, access and mobility management network element, access management device, or mobility management device, is mainly used for mobility management and access management, etc. It can be used to implement other functions of the mobility management entity (MME) function except session management. For example, lawful interception, or access authorization (or authentication), registration of user equipment, mobility management, tracking area update process, reachability detection, selection of session management network element, mobile state transition management, etc. For example, in 5G, the access and mobility management network element can be the AMF network element. In future communications, such as 6G, the access and mobility management network element can still be the AMF network element, or have other names, which are not limited in this application. When the access and mobility management network element is the AMF network element, the AMF network element can provide the Namf service.

[0299] The SMF network element, which can also be referred to as the SMF entity, is mainly used for the management of session-related services, such as the establishment and release of sessions. In future communication systems, the session management function network element can still be the SMF network element, or there can be other names, which are not limited in this application.

[0300] The UDM network element, which can also be referred to as the UDM entity, is used to process terminal device identification, access authentication, registration, and mobility management, etc. In 5G, the data management network element can be the UDM network element or the unified data management device. In future communication systems, the unified data management can still be the UDM network element, or there can be other names, which are not limited in this application.

[0301] The PCF network element is a policy decision point that provides rules such as service data flow and application detection, gating, quality of service (QoS), and flow-based charging control.

[0302] The AF network element is mainly responsible for interacting with the 3rd generation partnership project (3GPP) core network to provide services, and to influence service flow routing, access network capability opening, policy control, etc.

[0303] The NSSF network element mainly determines the network slice instance that the terminal is allowed to access based on the terminal's slice selection assistance information, subscription information, etc.; the AUSF network element is mainly used to provide authentication services.

[0304] The UPF network element is mainly responsible for packet routing and forwarding, mobility anchor point, uplink classifier to support routing service flows to the data network, and branch point to support multi-homed protocol data unit (PDU) sessions, etc.

[0305] A data network (DN) refers to an operator network that provides data transmission services for users, such as an Internet Protocol Multimedia Service (IMS), the Internet, etc.

[0306] Among them, the UE can access the DN by establishing a Protocol Data Unit (PDU) session between the UE and the (R)AN and between the UPF network element and the DN.

[0307] See Figure 1 , the UE and the AMF network element can communicate through the N1 interface, the (R)AN and the AMF network element can communicate through the N2 interface, the (R)AN and the UPF network element can communicate through the N3 interface, the UPF network element and the SMF network element can communicate through the N4 interface, the PCF network element and the AF network element can communicate through the N5 interface, the UPF network element and the DN can communicate through the N6 interface, the SMF network element and the PCF network element can communicate through the N7 interface, the AMF network element and the UDM network element can communicate through the N8 interface, the UPF network elements can communicate through the N9 interface, the UDM network element and the SMF network element can communicate through the N10 interface, the AMF network element and the SMF network element can communicate through the N11 interface, the AMF network element and the AUSF network element can communicate through the N12 interface, the AUSF network element and the UDM network element can communicate through the N13 interface, the AMF network elements can communicate through the N14 interface, the AMF network element and the PCF network element can communicate through the N15 interface, and the AMF network element and the NSSF network element can communicate through the N22 interface.

[0308] In some embodiments, the core network device may further include a Network Exposure Function (NEF) network element for providing external exposure of network function capabilities.

[0309] It should be noted that in the embodiments of the present application, the device for implementing the functions of the communication device may be the communication device itself or a device capable of supporting the communication device to implement its functions, such as a chip system, and this device may be installed in the communication device. In the embodiments of the present application, the chip system may be composed of chips or may include chips and other discrete devices, and the communication device may be a terminal device, an access network device, or a core network device.

[0310] Exemplarily, Figure 2 is a schematic illustration diagram of another communication system. The following combines Figure 2 , and describes the technical problems solved by the present application.

[0311] There are some areas with poor coverage in the existing base station deployment. For example, in indoor areas, users can deploy a home gNB (HgNB) to increase the signal coverage range of the indoor area. Among them, the architecture of the HgNB in the 5G communication system is the same as that of the existing ordinary base station. Additionally, in order to avoid too many HgNBs connected to the AMF network element, an HgNB gateway (GW) can be deployed in the network, so that the HgNB GW can be used as a convergence point to manage the HgNB. As Figure 2 shown, the location of the HgNB GW can be between the HgNB and the AMF network element. From the perspective of the HgNB, the HgNB GW is equivalent to the AMF network element, and from the perspective of the AMF network element, the HgNB GW is equivalent to the HgNB.

[0312] After the user deploys the HgNB at home, a closed access group mechanism can be introduced in the HgNB, and the HgNB can be set to the closed mode to restrict access to the network by visitor UEs other than the management terminal (host UE). The management terminal can be understood as the terminal of the user who purchases or owns the HgNB. Among them, the closed access group can support the network to perform access control on the terminal, or rather, the network can perform access control on the terminal through the closed access group. For example, the information of the closed access group allowed to access is saved in the terminal subscription data, and the HgNB broadcasts the corresponding closed access group identification information. When the closed access group allowed to access by the terminal corresponds to the closed access group broadcast by the HgNB, if the terminal accesses the network through the HgNB, the network can allow the terminal to register and access. When the closed access group allowed to access by the terminal does not correspond to the closed access group broadcast by the HgNB, the network will reject the terminal's registration request. Among them, the closed access group allowed to access by the terminal corresponding to the closed access group broadcast by the HgNB can be understood as that the information of the closed access group allowed to access by the terminal contains the identification information of the closed access group broadcast by the HgNB.

[0313] In some embodiments, there can be multiple cells under the HgNB. When the HgNB is in the closed mode, all the cells under the HgNB are cells that support the closed access group function. In the embodiments of the present application, the cells under the HgNB that support the closed access group function can be referred to as closed access group cells. Among them, the HgNB broadcasts the identification information of the closed access group, which can be understood as that the closed access group cells under the HgNB broadcast the identification information of the closed access group.

[0314] As an example, when a user purchases an HgNB and the HgNB introduces a closed access group mechanism, the operator selling the HgNB can configure the information of the closed access group for the HgNB, such as the identity (ID) of the closed access group, and update the corresponding information of the closed access group in the subscription data of the management terminal, or in other words, save the information of the allowed closed access group in the subscription data of the management terminal, such as the closed access group ID broadcast by the HgNB. The HgNB will broadcast the closed access group ID of the HgNB. After the management terminal and the visitor terminal receive the broadcast of the HgNB, since the subscription data of the management terminal contains the closed access group ID broadcast by the HgNB, the management terminal can choose to access the network through the HgNB, and the network allows the management terminal to register and access. Since the subscription data of the visitor terminal does not contain the closed access group ID broadcast by the HgNB, the visitor terminal cannot access the network through the HgNB.

[0315] However, when the HgNB is deployed and in the closed mode, there is a need to allow the visitor terminal to access the network through the HgNB. Therefore, how to enable the visitor terminal to access the network through the HgNB has become a technical problem to be solved urgently.

[0316] In view of this, the present application provides a communication method and a communication device. In the technical solution provided by the present application, in a scenario where a visitor terminal is allowed to access an HgNB, the visitor terminal can obtain temporary closed access group information, so that the visitor terminal can access the HgNB to obtain network services. The temporary closed access group information of the visitor terminal can also be referred to as the closed access group information allowed for the visitor terminal to access. The visitor terminal can determine the home base station that can access the network based on the temporary closed access group information. When the temporary closed access group information of the visitor terminal contains the closed access group ID broadcast by the HgNB, the visitor terminal is allowed to access or visit the HgNB. It should be noted that the visitor terminal accessing the HgNB can also be referred to as the visitor terminal visiting the HgNB, or the visitor terminal accessing the network through the HgNB.

[0317] In the field of communication, the closed access group can be referred to as a closed access group (CAG) in the fifth generation (5G) mobile communication system, a closed subscriber group (CSG) in the fourth generation (4G) mobile communication system, and may have other names in the future sixth generation (6G) mobile communication system, which is not limited here. For the convenience of understanding and description, the embodiments of the present application are described by taking the 5G CAG as an example.

[0318] In the embodiments of the present application, two solutions for dynamically providing temporary CAG information to a visitor terminal are provided. The first solution is that the management terminal actively triggers the process of dynamically providing temporary CAG information to the visitor terminal. For example, the management terminal can instruct a first functional network element to allow a visitor terminal accessing the HgNB, so that the first functional network element can trigger the process of updating the subscription data of the visitor terminal based on the instruction information sent by the management terminal, and thus save the temporary CAG information in the subscription data of the visitor terminal; and after the update of the subscription data of the visitor terminal is completed, trigger a UE configuration update (UCU) process, so that the visitor terminal can obtain the temporary CAG information; The second solution is that the visitor terminal actively requests to obtain temporary CAG information. For example, the management terminal can instruct the first functional network element about the access restriction conditions of the visitor terminal to the HgNB. If the visitor terminal needs to access the HgNB, the visitor terminal can send verification conditions to the first functional network element. If the verification conditions meet the restriction conditions, the visitor terminal can obtain the temporary CAG information and thus access the HgNB. Among them, the first functional network element can be understood as an application server (AS) of a third-party application providing services for the HgNB or an AF network element. As an example, the first functional network element can be provided by the operator corresponding to the HgNB or the vendor corresponding to the HgNB, and the present application does not limit this.

[0319] Embodiment 1: The management terminal actively triggers the process of dynamically providing temporary CAG information to the visitor terminal. Embodiment 1 includes two parts. The first part is that the management terminal instructs the first functional network element to allow a visitor terminal accessing the HgNB; The second part is that the first functional network element triggers the process of the UDM network element updating the subscription data of the visitor terminal, so that the visitor terminal obtains the temporary CAG information.

[0320] The following combines Figures 3 to 5 , and details the technical solution of Embodiment 1. Among them, Figure 3 and Figure 4 are the first part of Embodiment 1, Figure 3 in which the management terminal instructs the visitor terminal accessing the HgNB through the user plane towards the AS, Figure 4 in which the management terminal instructs the visitor terminal accessing the HgNB through the control plane towards the AF network element, Figure 5 is the second part of Embodiment 1.

[0321] Figure 3 This is a schematic illustration of a communication method provided by an embodiment of the present application. As Figure 3 shown, the method may include S301 and S302.

[0322] S301, The first terminal establishes a session with the AS.

[0323] As an example, the first terminal can be the management terminal of the first home base station.

[0324] In this embodiment, after the first terminal obtains the information of the AS, it can establish a session with the AS. As an example, the information of the AS can be pre-configured in the first terminal, or after the user purchases the first home base station, the user can obtain the information of the AS through the website information or application (APP) provided by the operator.

[0325] This embodiment does not specifically limit the implementation manner of the first terminal to establish a session with the AS. For example, the first terminal can connect to the AS through the downloaded APP.

[0326] S302, The first terminal sends the first information to the AS, and the first information indicates the second terminal that is allowed to access the first home base station.

[0327] In this embodiment, after the first terminal establishes a session with the AS, if there is a need to allow a visitor terminal to access the first home base station, the first terminal can send the first information to the AS to indicate the second terminal that is allowed to access the first home base station. The second terminal can also be referred to as a visitor terminal, that is, the second terminal can be understood as a visitor terminal that is allowed to access the first home base station.

[0328] As an example, the first information can include the indication information of the first CAG and the indication information of the second terminal. The indication information of the first CAG can be used to indicate the CAG corresponding to the first home base station, such as the first CAG, and the indication information of the second terminal can be used to indicate the second terminal. Among them, the CAG corresponding to the first home base station can be understood as the CAG broadcast by the first home base station or the CAG cell of the first home base station.

[0329] As an example, the first home base station can be explicitly indicated by the identity (ID) of the first CAG. The ID of the first CAG can be understood as the CAG ID configured by the operator for the first home base station.

[0330] As an example, since the first terminal is the management terminal of the first home base station, the CAG information saved in the subscription data of the first terminal can include the ID of the first CAG. Therefore, the ID of the first CAG can be implicitly indicated by the identity of the first terminal. Correspondingly, the AS can determine the CAG allowed to be accessed by the first terminal based on the identity of the first terminal, and then determine the identity of the first CAG.

[0331] As an example, the indication information of the first CAG can include the identity of the first CAG and / or the identity of the first terminal.

[0332] Among them, the first CAG is the CAG corresponding to the first home base station. Then, the first home base station can broadcast the identification information of the first CAG, or in other words, the identification information of the CAG broadcast by the first home base station can include the identification of the first CAG.

[0333] As an example, the second terminal can be indicated by at least one of the following identifiers: the generic public subscription identifier (GSPI) of the second terminal, the global system for mobile communications (GSM) number, the subscription concealed identifier (SUCI), the 5G globally unique temporary UE identity (5G-GUT), or the permanent equipment identifier (PEI). The GSM number can be understood as the phone number of the second terminal. Therefore, the indication information of the second terminal can include at least one identifier of the second terminal.

[0334] In some embodiments, the first information may further include the restriction conditions for the second terminal to access the first home base station. The restriction conditions may include at least one of the following conditions: usage time, usage duration, usage location, or usage bandwidth. Among them, the usage time can be used to indicate the start time and / or end time when the second terminal is allowed to access the first home base station. For example, when the start time is 9 am, it can be considered that the second terminal can only access the first home base station after 9 am. The usage duration can be used to indicate the duration for which the second terminal is allowed to access the first home base station. For example, the usage duration can be 120 minutes. The usage location can be used to indicate the location where the second terminal is allowed to access the first home base station. For example, when the location of the second terminal is within a preset area, the second terminal is allowed to access the first home base station. The usage bandwidth can be used to indicate the network bandwidth that the second terminal can use after accessing the first home base station. For example, the usage bandwidth can be 20 megahertz (MHz). In the embodiments of the present application, the second terminal accessing the first home base station can also be referred to as the second terminal accessing the first home base station.

[0335] Correspondingly, the AS can receive the first information and transmit the first information to the AF network element, so that the AF network element can know the information of the first home base station and the information of the second terminal allowed to access the first home base station. The present application does not limit the transmission method between the AS and the AF network element.

[0336] In this embodiment, the management terminal may transmit the information of the first home base station and the information of the second terminal allowed to access the first home base station to the AF network element through the user plane.

[0337] Figure 4 It is a schematic illustration diagram of a communication method provided by another embodiment of this application. As Figure 4 shown, the method may include S401, S402, and S403.

[0338] S401, the first terminal sends first information to the AMF network element, and the first information indicates the second terminal allowed to access the first home base station.

[0339] As an example, the first terminal may be the management terminal of the first home base station.

[0340] In this embodiment, when there is a need to allow a visitor terminal to access the first home base station, the first terminal may send a non-access stratum (NAS) message to the AMF network element. The NAS message may include the first information, and the first information indicates the second terminal allowed to access the first home base station. Among them, the first information may refer to the relevant description of the first information in S302, which will not be elaborated here. Correspondingly, the AMF network element may receive the first information.

[0341] In some embodiments, the first terminal may send the first information to the AMF network element through an access network device. Among them, the access network device may be the first home base station, and the access network device is used to forward the first information.

[0342] S402, the AMF network element sends an event notification message to the NEF network element, and the event notification message contains the first information.

[0343] As an example, before executing the method provided in this embodiment, or before executing S401 or S402, the NEF network element may send a first event subscription request to the AMF network element. For example, the NEF network element may send an event subscription (Namf_EventExposure_Subscribe) message to the AMF network element to subscribe to an event, and the event is, for example, that any terminal updates the information of the visitor terminal to the network. Among them, any terminal may include the first terminal. It should be understood that the first terminal updating the information of the visitor terminal to the network is only an example rather than a limitation, and other terminals may also update the information of the visitor terminal to the network.

[0344] Therefore, after the AMF network element receives the first piece of information, since the NEF network element has subscribed to this event, the AMF network element can send an event notification (Namf_EventExposure_Notify) message to the NEF network element, and this message can include the first piece of information. Correspondingly, the NEF network element can receive the first piece of information.

[0345] S403, the NEF network element sends an event notification message to the AF network element, and the event notification message includes the first piece of information.

[0346] As an example, before executing the method provided in this embodiment, or rather, before executing S401, S402 or S403, the AF network element can send a second event subscription request to the NEF network element. For example, the AF network element can send an event subscription (Nnef_EventExposure_Subscribe) message to the NEF network element to subscribe to an event on the NEF, and this event is, for example, that any terminal updates the information of a visiting terminal to the network. Among them, any terminal can include the first terminal. It should be understood that the first terminal updating the information of the visiting terminal to the network is only an example rather than a limitation, and other terminals can also update the information of the visiting terminal to the network.

[0347] As an example, after the NEF network element receives the second event subscription request sent by the AF network element, the NEF network element can send a first event subscription request to the AMF network element. Therefore, the subscribed event in the first event subscription request can be related to the subscribed event in the second event subscription request.

[0348] Therefore, after the NEF network element receives the first piece of information, since the AF network element has subscribed to this event, the NEF network element can send an event notification (Nnef_EventExposure_Notify) message to the AF network element, and this message can include the first piece of information.

[0349] In this embodiment, the management terminal can transmit the information of the first home base station and the information of the second terminal allowed to access the first home base station to the AF network element through the control plane.

[0350] Figure 5 It is a schematic illustration diagram of a communication method provided for another embodiment of this application. As Figure 5 shown, this method can include S501 to S507.

[0351] S501, the AF network element sends second information to the NEF network element, and the second information indicates to save the indication information of the first CAG in the subscription data of the second terminal.

[0352] In this embodiment, after receiving the first piece of information, the AF network element may trigger an external parameter provision / grant / issuance process. For example, the AF network element may send a request message to the NEF network element, such as an external parameter creation request (Nnef_ParameterProvision_Create request) message. The request message may contain a second piece of information, which may be used to indicate the indication information of the first CAG to be saved in the subscription data of the second terminal. The indication information of the first CAG is, for example, the identifier of the first CAG.

[0353] As an example, the second piece of information may contain the indication information of the first CAG and the indication information of the second terminal. The indication information of the first CAG may be used to indicate the CAG corresponding to the first home base station, such as the first CAG, and the indication information of the second terminal may be used to indicate the second terminal.

[0354] As an example, the second piece of information may also contain the condition information for the second terminal to access the first home base station, such as one or more of usage time, usage duration, usage location, and usage bandwidth.

[0355] In this embodiment, the description of the indication information of the first CAG, the indication information of the second terminal, and the relevant restrictions can refer to the relevant description in S302, which will not be elaborated here.

[0356] It should be noted that the number of second terminals indicated by the first piece of information may be multiple, and each second terminal may belong to different operator networks. Therefore, after receiving the first piece of information, the AF network element may determine the home operator network of each second terminal indicated by the first piece of information, and send a request message to the NEF network element in the determined home operator network. The request message may contain the second piece of information. It should be understood that the second terminals indicated by the second piece of information may be part or all of the second terminals indicated by the first piece of information, and the AF network element may execute S501 multiple times.

[0357] As an example, the AF network element may send the second piece of information to the NEF network element in the home operator network of each second terminal for each second terminal, and the second piece of information may only indicate one second terminal; or the AF network element may send the second piece of information to the NEF network element in each home operator network for each home operator network, and the second piece of information may indicate one or more second terminals belonging to each operator network.

[0358] S502, the NEF network element sends the second piece of information to the UDM network element, and the second piece of information indicates that the indication information of the first CAG is to be saved in the subscription data of the second terminal.

[0359] In this embodiment, after receiving the second piece of information, the NEF network element may send a request message to the UDM network element, such as an external parameter creation request (Nudm_ParameterProvision_Create request) message, which may contain the second piece of information indicating the indication information of the first CAG to be saved in the subscription data of the second terminal. Correspondingly, the UDM network element may receive the second piece of information.

[0360] S503, the UDM network element updates the subscription data of the second terminal.

[0361] In this embodiment, after receiving the second piece of information, the UDM network element determines the second terminal for which the subscription data needs to be updated based on the indication information of the second terminal in the second piece of information, and updates the subscription data of the second terminal. As an example, the UDM network element may save the temporary CAG information in the subscription data of the second terminal, thereby completing the update of the subscription data of the second terminal. The temporary CAG information of the second terminal may also be referred to as the CAG information allowed for the second terminal to access. The UDM network element may determine the temporary CAG information of the second terminal based on the second piece of information. For example, the temporary CAG information may include the identifier of the first CAG and / or the restriction conditions for the second terminal to access the first home base station, etc. Among them, the identifier of the first CAG may be used to indicate the CAG allowed for the second terminal to access, and the restriction conditions for the second terminal to access the first home base station may include one or more of the usage time, usage duration, usage location, and usage bandwidth.

[0362] S504, the UDM network element sends a subscription data management notification message to the AMF network element, which includes the indication information of the second terminal and the temporary CAG information of the second terminal.

[0363] In this embodiment, when the subscription data saved in the UDM network element changes, the UDM network element may trigger the UCU process to update the latest subscription data to the second terminal. As an example, the UDM network element may update the latest subscription data to the second terminal through the AMF network element, and the latest subscription data may include the temporary CAG information of the second terminal. For example, the UDM network element may send a subscription data management notification (Nudm_SDM_Notification Notify) message to the AMF network element, and the notification message may include the indication information of the second terminal and the temporary CAG information of the second terminal. Correspondingly, the AMF network element may receive the subscription data management notification message.

[0364] S505, the AMF network element updates the latest subscription data to the second terminal.

[0365] In this embodiment, after receiving the subscription data management notification message, the AMF network element can trigger the UCU process to update the latest subscription data for the second terminal. The latest subscription data can include the temporary CAG information of the second terminal. For example, the AMF network element can determine the second terminal based on the indication information of the second terminal in the subscription data management notification message and send the temporary CAG information to the second terminal.

[0366] Correspondingly, the second terminal can receive the temporary CAG information and execute the registration process to obtain services by accessing the network through the first home base station.

[0367] S506. The UDM network element sends a response message to the NEF network element, and the response message indicates that the subscription data update of the second terminal is completed.

[0368] In this embodiment, after the UDM network element updates the subscription data of the second terminal, it can send a response message (such as Nudm_ParameterProvision_Create response) to the NEF network element, thereby indicating to the NEF network element that the subscription data of the second terminal has been updated. Correspondingly, the NEF network element can receive this response message.

[0369] S507. The NEF network element sends a response message to the AF network element, and the response message indicates that the subscription data update of the second terminal is completed.

[0370] In this embodiment, after receiving the response message from the UDM network element, the NEF network element can send a response message (such as Nnef_ParameterProvision_Create response) to the AF network element, thereby indicating to the AF network element that the subscription data of the second terminal has been updated. Correspondingly, the AF network element can receive this response message.

[0371] In the embodiment of this application, there is no limitation on the execution order of S504 and S506. S504 can be executed first and then S506, or S506 can be executed first and then S504, or S504 and S506 can be executed simultaneously.

[0372] In this embodiment, after receiving the first information, the AF network element can trigger the external parameter granting process, send the second information to the UDM network element in the home operator network of the second terminal, to instruct the UDM network element to determine the temporary CAG information of the second terminal and save the CAG information in the subscription data of the second terminal. Since the subscription data of the second terminal is updated, the UDM network element can trigger the UCU process, so that the UDM network element can indicate the temporary CAG information of the second terminal to the second terminal, so that the second terminal can access the core network through the first home base station based on the obtained temporary CAG information to obtain services.

[0373] In this embodiment, by defining a process in which the management terminal actively reports information about the visitor terminal allowed to access the first home base station to the network, the first functional network element can update the information of the visitor terminal to the UDM network element, so that the UDM network element updates the subscription data of the visitor terminal, and the visitor terminal can obtain temporary CAG information, and further the visitor terminal can join the network through the first home base station to obtain network services.

[0374] The following combines Figure 6 , and details the method for the second terminal to register and access the core network through the first home base station.

[0375] Figure 6 It is a schematic illustration of a communication method provided in another embodiment of the present application. As Figure 6 shown, the method may include S601 to S608.

[0376] S601, the second terminal sends a registration request message to the first home base station.

[0377] In this embodiment, when the second terminal obtains temporary CAG information and the temporary CAG information is saved in the subscription data of the second terminal, the second terminal can send a registration request message to the first home base station to request to access the first home base station to obtain network services.

[0378] As an example, the registration request message may include a registration type and indication information of the second terminal.

[0379] S602, the first home base station selects an AMF network element.

[0380] S603, the first home base station sends the registration request message of the second terminal to the AMF network element.

[0381] In this embodiment, after the first home base station selects the AMF network element, it can send the received registration request message of the second terminal to the AMF network element.

[0382] As an example, the first home base station can also send the CAG ID broadcast by the first home base station to the AMF network element.

[0383] S604, the AMF network element selects an AUSF network element.

[0384] S605, the second terminal, the AMF network element, the AUSF network element, and the UDM network element interact to complete the authentication process.

[0385] In S606, the AMF network element and the UDM network element interact to obtain the subscription data of the second terminal.

[0386] In this embodiment, after the second terminal and core network elements such as the AMF network element, the AUSF network element, and the UDM network element authenticate each other successfully, the AMF network element can communicate with the UDM network element so that the AMF network element can obtain the subscription data of the second terminal.

[0387] In S607, the AMF network element sends an N2 message to the first home base station to indicate whether to allow the second terminal to access the first home base station.

[0388] In this embodiment, after the AMF network element obtains the subscription data of the second terminal, it can match the CAG information in the subscription data with the CAG ID broadcast by the first home base station. If the CAG information in the subscription data contains the CAG ID broadcast by the first home base station, it is considered that the second terminal is allowed to access the first home base station. If the CAG information in the subscription data does not contain the CAG ID broadcast by the first home base station, it is considered that the second terminal is not allowed to access the first home base station.

[0389] As an example, if the second terminal is allowed to access the first home base station, the AMF network element can send an N2 message to the first home base station. The N2 message can contain a registration acceptance message (NAS message) that needs to be forwarded by the first home base station. The registration acceptance message can be a Registration Accept message.

[0390] As an example, if the second terminal is not allowed to access the first home base station, the AMF network element can send an N2 message to the first home base station. The N2 message can contain a registration rejection message (NAS message) that needs to be forwarded by the first home base station.

[0391] In S608, the first home base station sends a registration acceptance / rejection message to the second terminal.

[0392] In this embodiment, after the first home base station receives the registration acceptance message, it can forward the registration acceptance message to the second terminal, so that the second terminal can access the first home base station to obtain network services.

[0393] In this embodiment, after the second terminal obtains the temporary CAG information, it can request to access the network through the first home base station through the registration process to obtain network services.

[0394] Embodiment 2: In some implementation manners, a new functional network element may be added to the core network. This functional network element can be used to store the temporary CAG information of the visitor terminal. Thus, when the visitor terminal requests to access the first home base station, it can be determined whether to allow the visitor terminal to access the first home base station based on the temporary CAG information of the visitor terminal stored in the second functional network element. The following will be combined with Figure 7 , and this solution will be described in detail.

[0395] Figure 7 FIG. is a schematic illustration diagram of a communication method provided by another embodiment of the present application. As Figure 7 shown, this method may include S701 to S711.

[0396] S701, the second AMF network element receives a first piece of information from the first terminal, and the first piece of information indicates a visitor terminal allowed to access the first home base station.

[0397] As an example, the first terminal may be the management terminal of the first home base station.

[0398] In this embodiment, the specific implementation manner of S701 may refer to S401, which will not be elaborated here.

[0399] S702, the second AMF network element sends a seventh piece of information to the second functional network element, and the seventh piece of information is used to indicate the CAG information for determining that the visitor terminal is allowed to access.

[0400] As an example, the second functional network element may be understood as a newly added functional network element in the core network for storing visitor terminal information. The second functional network element may also be referred to as other names such as the second functional entity, CAG management function, etc., which are not limited in the present application.

[0401] In this embodiment, after receiving the first piece of information, the second AMF network element may send the seventh piece of information to the second functional network element to instruct the second functional network element to determine the CAG information or temporary CAG information for which the visitor terminal is allowed to access. Correspondingly, the second functional network element may receive the seventh piece of information.

[0402] As an example, the seventh piece of information may include the first piece of information. For example, the seventh piece of information may include the indication information of the first CAG and the indication information of the visitor terminal; or the seventh piece of information may further include the restriction conditions for the visitor terminal to access the first home base station.

[0403] S703, the second functional network element determines the CAG information for which the visitor terminal is allowed to access based on the seventh piece of information.

[0404] In this embodiment, after receiving the seventh piece of information, the second functional network element may determine the CAG information allowed for the visitor terminal based on the seventh piece of information, and save the determined CAG information allowed for the visitor terminal for subsequent invocation.

[0405] As an example, the CAG information allowed for the visitor terminal may include the CAG information corresponding to the first home base station, such as the identifier of the first CAG.

[0406] S704, the first AMF network element receives a registration request message from the second terminal.

[0407] As an example, the second terminal may be an access terminal requesting to access the first home base station, or the second terminal may be a visitor terminal requesting to access the first home base station, or the second terminal may be a visitor terminal requesting to access the network through the first home base station.

[0408] In this embodiment, after the user deploys the first home base station, if the second terminal is allowed to access the first home base station, the second terminal may obtain the ID of the first CAG or the CAG ID broadcast by the first home base station from the first terminal. The first CAG is the CAG corresponding to the first home base station, so that the second terminal can (manually) select the first home base station or a CAG cell under the first home base station based on the obtained CAG ID, and send a registration request message to the first AMF network element to request to access the network through the selected first home base station or a CAG cell under the first home base station. Correspondingly, the first AMF network element may receive the registration request message.

[0409] As an example, the registration request message may include an eighth piece of information, and the eighth piece of information may indicate that the second terminal is a visitor terminal.

[0410] As an example, the eighth piece of information may be a specific field, and this field may be a terminal type identifier or a registration type identifier. This field may be an N-bit length field, where N is a positive integer. For example, when this field is a terminal type identifier and the bit length of this field is 1, when the value of this field is "0", it indicates that the terminal type of the second terminal is a visitor terminal, or when the value of this field is "1", it indicates that the terminal type of the second terminal is a visitor terminal. This application does not make specific limitations in this regard. Another example is that when this field is a registration type identifier and the bit length of this field is 1, when the value of this field is "0", it indicates that the registration type is a temporary CAG registration, or when the value of this field is "1", it indicates that the registration type is a temporary CAG registration. This application does not make specific limitations in this regard. Among them, the temporary CAG registration can be understood as a registration method for the second terminal to access the first home base station through temporary CAG information. The temporary CAG registration may also have other names, and no specific limitations are made here.

[0411] S705. The first AMF network element sends a fifth piece of information to the second functional network element. The fifth piece of information is used to request to determine whether to allow a second terminal to access a first home base station, and the fifth piece of information includes indication information of the second terminal.

[0412] In this embodiment, after the first AMF network element receives the eighth piece of information and determines that the second terminal is a visitor terminal, the first AMF network element may send the fifth piece of information to the second functional network element to request to determine whether to allow the second terminal to access the first home base station. Correspondingly, the second functional network element may receive the fifth piece of information.

[0413] As an example, the fifth piece of information may include indication information of the second terminal. The indication information of the second terminal may refer to the relevant description in the foregoing embodiments and will not be elaborated here.

[0414] In some embodiments, the fifth piece of information may further include indication information of a first CAG. The first CAG is the CAG corresponding to the first home base station. The indication information of the first CAG may refer to the relevant description in the foregoing embodiments and will not be elaborated here.

[0415] In some embodiments, if the registration request message sent by the second terminal does not include the eighth piece of information, the first AMF network element may obtain the subscription data of the second terminal from the UDM network element. If the allowed access CAG information is not saved in the subscription data of the second terminal, or the allowed access CAG information saved in the subscription data of the second terminal does not include the CAG ID broadcast by the first home base station, then the second terminal is considered a visitor terminal of the first home base station. Among them, the method for the first AMF network element to obtain the subscription data of the second terminal from the UDM network element may refer to the description of S604 to S606 and will not be elaborated here.

[0416] S706. The second functional network element sends a sixth piece of information to the first AMF network element. The sixth piece of information indicates whether to allow the second terminal to access the first home base station.

[0417] In this embodiment, after the second functional network element receives the fifth piece of information, it may determine whether to allow the second terminal to access the first home base station based on the fifth piece of information and indicate the determination result to the first AMF network element through the sixth piece of information. Correspondingly, the first AMF network element may receive the sixth piece of information.

[0418] As an example, after receiving the fifth piece of information, the second functional network element may determine that the visiting terminal is the second terminal based on the indication information of the second terminal in the fifth piece of information, and call the CAG information that the second functional network element determines and stores in S703 and that the visiting terminal is allowed to access. If the second functional network element does not save the CAG information that the second terminal is allowed to access, it is considered that the second terminal is not allowed to access the first home base station; if the second functional network element saves the CAG information that the second terminal is allowed to access, and the CAG information that the second terminal is allowed to access contains the indication information (such as the identifier of the first CAG) of the first CAG, it is considered that the second terminal is allowed to access the first home base station; if the second functional network element saves the CAG information that the second terminal is allowed to access, but the CAG information that the second terminal is allowed to access does not contain the indication information of the first CAG, it is considered that the second terminal is not allowed to access the first home base station.

[0419] As an example, the sixth piece of information may explicitly indicate whether the second terminal is allowed to access the first home base station. For example, the sixth piece of information may contain the indication information that the second terminal is allowed to access the first home base station, or may contain the indication information that the second terminal is not allowed to access the first home base station. For example, the sixth piece of information may be a field with a length of 1 bit. When the sixth piece of information is "1", it indicates that the second terminal is allowed to access the first home base station. When the sixth piece of information is "0", it indicates that the second terminal is not allowed to access the first home base station; or, when the sixth piece of information is "0", it indicates that the second terminal is allowed to access the first home base station. When the sixth piece of information is "1", it indicates that the second terminal is not allowed to access the first home base station. This is not limited here.

[0420] As an example, the sixth piece of information may implicitly indicate whether the second terminal is allowed to access the first home base station. For example, the sixth piece of information may contain the CAG information that the second terminal is allowed to access, so that the first AMF network element can independently determine whether to allow the second terminal to access the first home base station based on the sixth piece of information.

[0421] S707. The first AMF network element determines whether to allow the second terminal to access the first home base station based on the sixth piece of information.

[0422] In this embodiment, when the sixth piece of information includes indication information on whether to allow the second terminal to access the first home base station, the first AMF can directly determine whether to allow the second terminal to access the first home base station based on the sixth piece of information. When the sixth piece of information includes the CAG information to which the second terminal is allowed to access, the first AMF network element needs to independently determine whether the CAG information to which the second terminal is allowed to access includes the indication information of the first CAG (such as the identifier of the first CAG). If the CAG information to which the second terminal is allowed to access includes the indication information of the first CAG, it is considered that the second terminal is allowed to access the first home base station. If the CAG information to which the second terminal is allowed to access does not include the indication information of the first CAG, it is considered that the second terminal is not allowed to access the first home base station. Among them, the first AMF network element can directly obtain the indication information of the first CAG from the first home base station, and the indication information of the first CAG can be used to indicate the CAG corresponding to the first home base station.

[0423] In this embodiment, if the first AMF network element determines to allow the second terminal to access the first home base station, it can execute S708 to S711. If the first AMF network element determines not to allow the second terminal to access the first home base station, it can directly execute S711 without executing S708 to S710.

[0424] S708, the first AMF network element selects an AUSF network element.

[0425] S709, the second terminal, the first AMF network element, the AUSF network element, and the UDM network element interact to complete the authentication process.

[0426] S710, the first AMF network element and the UDM network element interact to obtain the subscription data of the second terminal.

[0427] In this embodiment, the subscription data of the second terminal obtained by the first AMF network element from the UDM network element may include information such as the traffic package subscribed by the second terminal and the services purchased by the second terminal. It should be understood that the subscription data of the second terminal in this embodiment does not include the CAG information to which the second terminal is allowed to access.

[0428] In this embodiment, the specific implementation manners of S708 to S710 can respectively refer to S604 to S606, which will not be elaborated here.

[0429] S711, the first AMF network element sends a registration acceptance message or a registration rejection message to the second terminal.

[0430] In this embodiment, if the first AMF network element determines that the second terminal is not allowed to access the first home base station, the first AMF network element may send a registration rejection message to the second terminal through a NAS message, or the first AMF network element may send a registration rejection message to the second terminal through the first home base station; if the first AMF network element determines that the second terminal is allowed to access the first home base station, the first AMF network element may send a registration acceptance message to the second terminal through a NAS message, or the first AMF network element may send a registration acceptance message to the second terminal through the first home base station, so that the second terminal can access the first home base station to obtain network services.

[0431] In this embodiment, by defining a newly added second functional network element in the core network, the management terminal can dynamically update the information of the visiting terminal to the second functional network element, and the second functional network element can be used as the storage space for the temporary CAG information of the visiting terminal. Thus, when the second terminal performs registration access, it can be determined whether to allow the second terminal to access the first home base station based on the stored temporary CAG information of the visiting terminal, without the need to update the subscription data of the second terminal, reducing power consumption. In this embodiment, the first AMF network element can determine whether the second terminal is a visiting terminal based on the indication information carried in the registration request message of the second terminal, and when it is determined that the second terminal is a visiting terminal, send the fifth information to the second functional network element to determine whether to allow the second terminal to access the first home base station.

[0432] In a possible implementation, the second functional network element can be deployed separately in the core network, or co-located with the AMF network element. That is to say, the second functional network element can be deployed in the AMF network element as part of the functions of the AMF network element. It should be understood that when the second functional network element is co-located with the AMF network element, the second AMF network element and the first AMF network element can be the same device, and are uniformly referred to as the AMF network element for convenience of description.

[0433] As an example, if the AMF network element can implement the functions of the second functional network element, after the AMF network element executes S701 to receive the first information from the first terminal, it executes S702a to determine the CAG information allowed for the visiting terminal to access based on the first information. It should be understood that in this example, S702a can replace S702 and S703. The specific implementation process of the AMF network element executing S702a can refer to the relevant descriptions in S702 and S703, and will not be elaborated here.

[0434] As an example, if the AMF network element can implement the functions of the second functional network element, after receiving the registration request message from the second terminal in S704, the AMF network element can execute S705a to determine whether to allow the second terminal to access the first home base station based on the registration request message. It should be understood that in this example, S705a can be used to replace S705 to S707. Among them, the specific implementation process of the AMF network element executing S705a can refer to the relevant content in S705 to S707, which will not be elaborated here. It should be understood that after the AMF network element executes S701, S702a, S704, and S705a, it can continue to execute at least one of S708 to S711, which will not be elaborated here.

[0435] Embodiment 3: The visitor terminal actively requests to obtain temporary CAG information. For example, the management terminal can indicate the access restriction conditions of the visitor terminal to the first functional network element. If the visitor terminal needs to access the HgNB, the visitor terminal can send verification conditions to the first functional network element. If the verification conditions meet the restriction conditions, the visitor terminal can obtain temporary CAG information, so as to access the HgNB to obtain services. Compared with the solution in Embodiment 1, in Embodiment 3, the management terminal does not need to indicate to the first functional network element the visitor terminals allowed to access the HgNB every time there is a need to allow the visitor terminal to access the HgNB, thus saving power consumption. Embodiment 3 includes two parts. The first part is that the management terminal indicates the restriction conditions when the visitor terminal accesses the first home base station to the first functional network element; the second part is that the visitor terminal actively obtains CAG information.

[0436] Next, in combination with Figures 8 to 11 , the technical solution of Embodiment 3 will be described in detail. Among them, Figure 8 and Figure 9 are the first part of Embodiment 3. Figure 8 In, the management terminal indicates the restriction conditions when the visitor terminal accesses the first home base station to the first functional network element through the user plane towards the AS. Figure 9 In, the management terminal indicates the restriction conditions when the visitor terminal accesses the first home base station to the first functional network element through the control plane towards the AF network element. Figure 10 and Figure 11 are the second part of Embodiment 3. Figure 10 In, the visitor terminal obtains temporary CAG information through the user plane. Figure 11 In, the visitor terminal obtains temporary CAG information through the control plane.

[0437] Figure 8 This is a schematic illustration diagram of a communication method provided by another embodiment of the present application. As Figure 8 shown, the method may include S801 and S802.

[0438] S801, the first terminal establishes a session with the AS.

[0439] In this embodiment, the specific implementation of S801 can refer to S301, which will not be elaborated here.

[0440] S802, the first terminal sends first information to the AS, and the first information indicates the restriction conditions for the visitor terminal to access the first home base station.

[0441] In this embodiment, after the first terminal establishes a session with the AS, if there is a need to allow the visitor terminal to access the first home base station, the first terminal can send first information to the AS to indicate the restriction conditions for the visitor terminal to access the first home base station.

[0442] As an example, the first information may include the indication information of the first CAG and the indication information of the restriction conditions. Among them, the indication information of the first CAG can be used to indicate the CAG corresponding to the first home base station, such as the first CAG. Among them. The indication information of the first CAG can refer to the relevant description in S302, which will not be elaborated here.

[0443] As an example, the restriction conditions for the visitor terminal to access the first home base station may include using a key and / or using a password. The key may include a public key and a private key. When the restriction condition includes using a key, the visitor terminal can use the public key to generate encrypted data. If the AS can decrypt the encrypted data using the private key, it is considered that the visitor terminal can access the first home base station. When the restriction condition includes using a password, when the visitor terminal inputs the correct password information, it is considered that the visitor terminal can access the first home base station. The correct password information can be understood as using the password in the restriction conditions.

[0444] As an example, the restriction conditions may further include at least one of the following conditions: usage time, usage duration, usage location, or usage bandwidth. For details, reference can be made to the relevant description of the restriction conditions in S302, which will not be elaborated here.

[0445] In this embodiment, the management terminal can transmit the information of the first home base station and the restriction conditions for the visitor terminal to access the first home base station to the AF network element through the user plane.

[0446] Figure 9 This is a schematic illustration of a communication method provided by another embodiment of the present application. As Figure 9 shown, the method may include S901, S902, and S903.

[0447] S901, the first terminal sends first information to the AMF network element, and the first information indicates the restriction conditions for the visitor terminal to access the first home base station.

[0448] As an example, the first terminal may be the management terminal of the first home base station.

[0449] In this embodiment, the first terminal may send a NAS message to the AMF network element. The NAS message may include first information, and the first information indicates the restriction conditions for the visiting terminal to access the first home base station. The first information may refer to the relevant description of the first information in S802, which will not be elaborated here. Correspondingly, the AMF network element may receive the first information.

[0450] In some embodiments, the first terminal may send the first information to the AMF network element through an access network device. The access network device may be the first home base station, and the access network device is used to forward the first information.

[0451] S902. The AMF network element sends an event notification message to the NEF network element, and the event notification message includes the first information.

[0452] As an example, before executing the method provided in this embodiment, or before executing S901 or S902, the NEF network element may send a first event subscription request to the AMF network element. For example, the NEF network element may send an event subscription (Namf_EventExposure_Subscribe) message to the AMF network element to subscribe to an event. The event is, for example, that there is any terminal updating the restriction conditions for the visiting terminal to access the first home base station to the network. Any terminal may include the first terminal. It should be understood that the first terminal updating the restriction conditions to the network is only an example rather than a limitation, and other terminals may also update the restriction conditions to the network.

[0453] Therefore, after the AMF network element receives the first information, because the NEF network element has subscribed to this event, the AMF network element may send an event notification (Namf_EventExposure_Notify) message to the NEF network element, and the message may include the first information. Correspondingly, the NEF network element may receive the first information.

[0454] S903. The NEF network element sends an event notification message to the AF network element, and the event notification message includes the first information.

[0455] As an example, before executing the method provided in this embodiment, or before executing S901, S902 or S903, the AF network element may send a second event subscription request to the NEF network element. For example, the AF network element may send an event subscription (Nnef_EventExposure_Subscribe) message to the NEF network element to subscribe to an event. The event is, for example, that there is any terminal updating the restriction conditions for the visiting terminal to access the first home base station to the network. Any terminal may include the first terminal. It should be understood that the first terminal updating the restriction conditions to the network is only an example rather than a limitation, and other terminals may also update the restriction conditions to the network.

[0456] As an example, after receiving the second event subscription request sent by the AF network element, the NEF network element may send a first event subscription request to the AMF network element. Therefore, the subscribed events in the first event subscription request may be related to the subscribed events in the second event subscription request.

[0457] Therefore, after the NEF network element receives the first piece of information, since the AF network element has subscribed to the event, the NEF network element may send an event notification (Nnef_EventExposure_Notify) message to the AF network element, and the message may include the first piece of information.

[0458] In this embodiment, the management terminal may transmit the information of the first home base station and the information of the second terminal allowed to access the first home base station to the AF network element through the control plane.

[0459] Figure 10 It is a schematic illustration diagram of a communication method provided for another embodiment of this application. As Figure 10 shown, the method may include S1001 to S1008.

[0460] S1001, the second terminal establishes a session with the AS.

[0461] In this embodiment, when the second terminal needs to access the first home base station, the second terminal may establish a session with the AS to obtain temporary CAG information. Among them, the way for the second terminal to establish a session with the AS is similar to the way for the first terminal to establish a session with the AS, and the specific description in S301 may be referred to, which will not be elaborated here.

[0462] S1002, the second terminal sends the third piece of information to the AS, and the third piece of information indicates the verification conditions for the second terminal to access the first home base station.

[0463] In this embodiment, after the second terminal establishes a session with the AS, the second terminal may send the third piece of information to the AS to indicate the verification conditions for the second terminal to access the first home base station. Correspondingly, the AS may receive the third piece of information.

[0464] As an example, the third piece of information may include the verification conditions for the second terminal to access the first home base station, the indication information of the first CAG, and the indication information of the second terminal, where the first CAG is the CAG corresponding to the first home base station. Among them, the indication information of the first CAG and the indication information of the second terminal may refer to the relevant descriptions in the foregoing embodiments, which will not be elaborated here.

[0465] In this embodiment, the second terminal may obtain the indication information of the first CAG from the management terminal of the first home base station, such as the ID of the first CAG or the CAG ID broadcast by the first home base station. It should be understood that when the verification condition reported by the second terminal corresponds to the restriction condition set by the first terminal, the second terminal may be allowed to access the network through the first home base station. As an example, when the restriction condition includes using a key, the verification condition may be the encrypted data generated by the second terminal using the public key. For example, the second terminal may encrypt the indication information of the first CAG and the indication information of the second terminal using the public key. If the AS can decrypt the encrypted data using the private key, it is considered that the verification condition meets the restriction condition. If the AS cannot decrypt the verification condition using the private key, it is considered that the verification condition does not meet the restriction condition. As an example, when the restriction condition includes using a password, the verification condition may be using the password. If the password used in the verification condition is the same as the password used in the restriction condition, it is considered that the verification condition meets the restriction condition. If the password used in the verification condition is different from the password used in the restriction condition, it is considered that the verification condition does not meet the restriction condition.

[0466] S1003. The second terminal receives the fourth information sent by the AS, and the fourth information indicates that the second terminal is allowed to access the first home base station.

[0467] In this embodiment, after receiving the third information, the AS may verify the verification condition indicated by the third information. If the verification condition meets the restriction condition, the AS sends the fourth information to the second terminal to indicate that the second terminal is allowed to access the first home base station.

[0468] As an example, the fourth information may include the temporary CAG information of the second terminal, and the temporary CAG information of the second terminal may include the CAG ID broadcast by the first home base station.

[0469] Correspondingly, the second terminal may receive the fourth information, and after receiving the fourth information, it may select the first home base station or the CAG cell under the first home base station to access the network according to the CAG ID in the fourth information.

[0470] S1004. The AF network element sends the second information to the NEF network element, and the second information indicates to save the indication information of the first CAG in the subscription data of the second terminal.

[0471] In this embodiment, if the AS determines that the verification condition of the second terminal meets the restriction condition, it can inform the AF network element that this application does not limit the transmission method between the AS and the AF network element. After the AF network element knows that the verification condition of the second terminal meets the restriction condition, it can trigger an external parameter provision / grant / distribution process. For example, the AF network element can determine the home operator network of the second terminal based on the indication information of the second terminal in the third information, and send a request message, such as an external parameter creation request (Nnef_ParameterProvision_Create request) message, to the NEF network element in the home operator network. The request message can include the second information, and the second information indicates to save the indication information of the first CAG in the subscription data of the second terminal. The indication information of the first CAG is, for example, the identifier of the first CAG.

[0472] As an example, the second information may include the indication information of the first CAG and the indication information of the second terminal.

[0473] As an example, the second information may further include the condition information for the second terminal to access the first home base station, such as usage time, usage duration, usage location, or usage bandwidth.

[0474] In this embodiment, the relevant descriptions of the indication information of the first CAG, the indication information of the second terminal, and the restriction condition can refer to the relevant descriptions in S302, which will not be elaborated here.

[0475] S1005, the NEF network element sends the second information to the UDM network element, and the second information indicates to save the indication information of the first CAG in the subscription data of the second terminal.

[0476] S1006, the UDM network element updates the subscription data of the second terminal.

[0477] In this embodiment, the specific implementation manners of S1005 and S1006 can refer to S502 and S503 respectively, which will not be elaborated here.

[0478] S1007, the UDM network element sends a response message to the NEF network element, and the response message indicates that the update of the subscription data of the second terminal is completed.

[0479] S1008, the NEF network element sends a response message to the AF network element, and the response message indicates that the update of the subscription data of the second terminal is completed.

[0480] In this embodiment, the specific implementation manners of S1007 and S1008 can refer to S506 and S507 respectively, which will not be elaborated here.

[0481] In a possible implementation, when the subscribed data stored in the UDM network element changes, the UDM network element can trigger the UCU process to update the latest subscribed data to the second terminal, such as the methods shown in S504 and S505.

[0482] In this implementation, S504 and S505 can be used to replace S1003, that is, after executing S1001 and S002, S1004 to S1008 can be directly executed, and then S504 and S505 are executed, or after executing S1001 and S002, S1004 to S1006 can be directly executed, and S1007 and S1008 are executed after executing S504 and S505. This application does not make specific restrictions on this.

[0483] In this embodiment, the second terminal can obtain the temporary CAG information through the user plane. After the second terminal obtains the temporary CAG information, it can register and access the core network where the first home base station is located based on the temporary CAG information. The registration process can refer to Figure 6 the relevant descriptions therein, which will not be elaborated here.

[0484] Figure 11 It is a schematic diagram of a communication method provided by another embodiment of this application. As Figure 11 shown, this method may include S1101 to S1111.

[0485] S1101, the second terminal sends the third information to the AMF network element, and the third information indicates the verification conditions for the second terminal to access the first home base station.

[0486] In this embodiment, when the second terminal needs to access the first home base station, it can send a NAS message to the AMF network element. The NAS message may include the third information, and the third information indicates the verification conditions for the second terminal to access the first home base station. Among them, the third information can refer to the relevant descriptions in S1002, which will not be elaborated here.

[0487] In some embodiments, the first terminal can also send the third information to the AMF network element through the access network device. Among them, the access network device can be the first home base station, and the access network device is used to forward the third information.

[0488] Correspondingly, the AMF network element can receive the third information.

[0489] S1102, the AMF network element sends an event notification message to the NEF network element, and the event notification message includes the third information.

[0490] As an example, before executing the method provided in this embodiment, or before executing S1101 or S1102, the NEF network element may send a first event subscription request to the AMF network element. For example, the NEF network element may send an event subscription (Namf_EventExposure_Subscribe) message to the AMF network element to subscribe to an event that there is any terminal updating the authentication condition for accessing the first home base station to the network. Among them, any terminal may include a second terminal.

[0491] Therefore, after receiving the third information, since the NEF network element has subscribed to this event, the AMF network element may send an event notification (Namf_EventExposure_Notify) message to the NEF network element, and this message may include the third information. Correspondingly, the NEF network element may receive the third information.

[0492] S1103. The NEF network element sends an event notification message to the AF network element, and the event notification message includes the third information.

[0493] As an example, before executing the method provided in this embodiment, or before executing S1101, S1102 or S1103, the AF network element may send a second event subscription request to the NEF network element. For example, the AF network element may send an event subscription (Nnef_EventExposure_Subscribe) message to the NEF network element to subscribe to an event that there is any terminal updating the authentication condition for accessing the first home base station to the network. Among them, any terminal may include a second terminal.

[0494] As an example, after receiving the second event subscription request sent by the AF network element, the NEF network element may send a first event subscription request to the AMF network element. Therefore, the subscribed event in the first event subscription request may be related to the subscribed event in the second event subscription request.

[0495] Therefore, after receiving the third information, since the AF network element has subscribed to this event, the NEF network element may send an event notification (Nnef_EventExposure_Notify) message to the AF network element, and this message may include the third information. Correspondingly, the AF network element may receive the third information.

[0496] S1104. The AF network element verifies the authentication condition.

[0497] In this embodiment, after receiving the third piece of information, the AF network element can verify the verification conditions in the third piece of information to determine whether to allow the second terminal to access the first home base station. Among them, when the verification conditions reported by the second terminal correspond to the restriction conditions set by the first terminal, the second terminal can be allowed to access the network through the first home base station. In this embodiment, the manner in which the AF network element verifies the verification conditions can refer to the relevant description in S1002, which will not be elaborated here.

[0498] S1105. The AF network element sends the second piece of information to the NEF network element, and the second piece of information indicates to save the indication information of the first CAG in the subscription data of the second terminal.

[0499] In this embodiment, if the AF network element determines that the verification conditions of the second terminal meet the restriction conditions, it can trigger an external parameter provision / grant / issuance process and send the second piece of information to the NEF network element. The second piece of information indicates to save the indication information of the first CAG in the subscription data of the second terminal.

[0500] In this embodiment, the specific implementation manner of S1105 can refer to S1004, which will not be elaborated here.

[0501] S1106. The NEF network element sends the second piece of information to the UDM network element, and the second piece of information indicates to save the indication information of the first CAG in the subscription data of the second terminal.

[0502] S1107. The UDM network element updates the subscription data of the second terminal.

[0503] S1108. The UDM network element sends a subscription data management notification message to the AMF network element, and the message contains the indication information of the second terminal and the temporary CAG information of the second terminal.

[0504] S1109. The AMF network element updates the latest subscription data to the second terminal.

[0505] S1110. The UDM network element sends a response message to the NEF network element, and the response message indicates that the subscription data update of the second terminal is completed.

[0506] S1111. The NEF network element sends a response message to the AF network element, and the response message indicates that the subscription data update of the second terminal is completed.

[0507] In this embodiment, the specific implementation manners of S1106 to S1111 can refer to S502 to S507, which will not be elaborated here.

[0508] In this embodiment, the second terminal can obtain the temporary CAG information through the control plane. After obtaining the temporary CAG information, the second terminal can register and access the core network where the first home base station is located based on the temporary CAG information. The registration process can refer toFigure 6 The relevant descriptions in [reference] are not elaborated here.

[0509] In this embodiment, the management terminal can set a static restriction condition for a visitor terminal to access the first home base station in the first functional network element. Thus, when the second terminal provides verification conditions to the first functional network element, the restriction condition can be used to verify the verification conditions. If the verification conditions meet the restriction conditions, the AS can send temporary CAG information to the second terminal, enabling the second terminal to obtain the temporary CAG information. Alternatively, the AF network element can trigger an external parameter provisioning process, enabling the UDM network element to save the temporary CAG information in the subscription data of the second terminal and update the latest subscription data to the second terminal through the UCU process, so that the second terminal can obtain the temporary CAG information, thereby enabling the second terminal to access the first home base station to obtain network services. In this embodiment, the visitor terminal can actively trigger the process of obtaining temporary CAG information. As long as the visitor terminal meets the restriction conditions set by the management terminal of the first home base station, the visitor terminal can trigger this process to obtain the temporary CAG information at any moment when the temporary CAG information is needed, improving the flexibility of the visitor terminal to obtain the temporary CAG information.

[0510] Figure 12 It is a schematic structural diagram of a communication device provided by an embodiment of the present application. As Figure 12 shown, the device 1200 may include: a receiving module 1210, a sending module 1220, and a processing module 1230.

[0511] In a possible implementation, the device 1200 can be used to implement Figure 3 each step / operation performed by the first terminal or the AS in [reference].

[0512] As an example, when the device 1200 is used to implement the method performed by the first terminal in [reference], one or more of the receiving module 1210, the sending module 1220, and the processing module 1230 can be used to implement the operations performed by the first terminal in S301, and the sending module 1220 can be used to implement the operations performed by the first terminal in S302. Figure 3 When the device 1200 is used to implement the method performed by the AS in [reference], one or more of the receiving module 1210, the sending module 1220, and the processing module 1230 can be used to implement the operations performed by the AS in S301, and the receiving module 1210 can be used to implement the operations performed by the AS in S302.

[0513] In a possible implementation, the device 1200 can be used to implement Figure 3 each step / operation performed by the first terminal or the AS in [reference].

[0514] In a possible implementation, the device 1200 can be used to implement Figure 4Each step / operation performed by the first terminal, AMF network element, NEF network element, or AF network element in

[0515] As an example, when the apparatus 1200 is used to implement Figure 4 the method implemented by the first terminal in

[0516] As an example, when the apparatus 1200 is used to implement Figure 4 the method implemented by the AMF network element in

[0517] As an example, when the apparatus 1200 is used to implement Figure 4 the method implemented by the NEF network element in

[0518] As an example, when the apparatus 1200 is used to implement Figure 4 the method implemented by the AF network element in

[0519] Optionally, the apparatus 1200 may also implement Figure 4 each step / operation performed by the first home base station in

[0520] In a possible implementation, the apparatus 1200 may be used to implement Figure 5 each step / operation performed by the AF network element, NEF network element, UDM network element, AMF network element, or second terminal in

[0521] As an example, when the apparatus 1200 is used to implement Figure 5 the method implemented by the AF network element in

[0522] As an example, when the apparatus 1200 is used to implement Figure 5 the method implemented by the NEF network element in

[0523] As an example, when the apparatus 1200 is used to implement Figure 5When the method implemented by the UDM network element, the receiving module 1210 can be used to implement the operations performed by the UDM network element in S502, the sending module 1220 can be used to implement the operations performed by the UDM network element in S504 and S506, and the processing module 1230 can be used to implement S503.

[0524] As an example, the apparatus 1200 is used to implement Figure 5 When the method implemented by the AMF network element, the receiving module 1210 can be used to implement the operations performed by the AMF network element in S504, and the sending module 1220 can be used to implement the operations performed by the AMF network element in S505.

[0525] As an example, the apparatus 1200 is used to implement Figure 5 When the method implemented by the second terminal, the receiving module 1210 can be used to implement the operations performed by the second terminal in S505.

[0526] Optionally, the apparatus 1200 can also implement Figure 5 Each step / operation performed by the base station in

[0527] In a possible implementation, the apparatus 1200 can be used to implement Figure 6 Each step / operation performed by the second terminal, the first home base station, the AMF network element, the AUSF network element, or the UDM network element in

[0528] As an example, the apparatus 1200 is used to implement Figure 6 When the method implemented by the second terminal, the receiving module 1210 can be used to implement the operations performed by the second terminal in S608, the sending module 1220 can be used to implement the operations performed by the second terminal in S601, and one or more of the receiving module 1210, the sending module 1220, and the processing module 1230 can be used to implement the operations performed by the second terminal in S605.

[0529] As an example, the apparatus 1200 is used to implement Figure 6 When the method implemented by the first home base station, the receiving module 1210 can be used to implement the operations performed by the first home base station in S601 and S607, the sending module 1220 can be used to implement the operations performed by the first home base station in S603 and S608, and the processing module 1230 can be used to implement S602.

[0530] As an example, the apparatus 1200 is used to implement Figure 6When implementing the method by the AMF network element, the receiving module 1210 can be used to implement the operations performed by the AMF network element in S603, the sending module 1220 can be used to implement the operations performed by the AMF network element in S607, the processing module 1230 can be used to implement S604, and one or more of the receiving module 1210, the sending module 1220, and the processing module 1230 can be used to implement the operations performed by the AMF network element in S605 and S606.

[0531] As an example, the apparatus 1200 is used to implement Figure 6 When implementing the method by the AUSF network element, one or more of the receiving module 1210, the sending module 1220, and the processing module 1230 can be used to implement the operations performed by the AUSF network element in S605.

[0532] As an example, the apparatus 1200 is used to implement Figure 6 When implementing the method by the UDM network element, one or more of the receiving module 1210, the sending module 1220, and the processing module 1230 can be used to implement the operations performed by the UDM network element in S605 and S606.

[0533] In a possible implementation, the apparatus 1200 can be used to implement Figure 7 Each step / operation performed by the first terminal, the second AMF network element, the second functional network element, the second terminal, the first AMF network element, the AUSF network element, or the UDM network element in

[0534] As an example, the apparatus 1200 is used to implement Figure 7 When implementing the method by the first terminal, the sending module 1220 can be used to implement the operations performed by the first terminal in S701.

[0535] As an example, the apparatus 1200 is used to implement Figure 7 When implementing the method by the second AMF network element, the receiving module 1210 can be used to implement the operations performed by the second AMF network element in S701, and the sending module 1220 can be used to implement the operations performed by the second AMF network element in S702.

[0536] As an example, the apparatus 1200 is used to implement Figure 7 When implementing the method by the second functional network element, the receiving module 1210 can be used to implement the operations performed by the second functional network element in S702 and S705, the sending module 1220 can be used to implement the operations performed by the second functional network element in S706, and the processing module 1230 can be used to implement the operations performed by the second functional network element in S703.

[0537] As an example, the apparatus 1200 is used to implement Figure 7When implementing the method by the second terminal, the receiving module 1210 can be used to implement the operations performed by the second terminal in S711, the sending module 1220 can be used to implement the operations performed by the second terminal in S704, and one or more of the receiving module 1210, the sending module 1220, and the processing module 1230 can be used to implement the operations performed by the second terminal in S709.

[0538] As an example, the apparatus 1200 is used to implement Figure 7 When implementing the method by the first AMF network element, the receiving module 1210 can be used to implement the operations performed by the first AMF network element in S704, S706, and S710, the sending module 1220 can be used to implement the operations performed by the first AMF network element in S705 and S711, the processing module 1230 can be used to implement the operations performed by the first AMF network element in S707 and S708, and one or more of the receiving module 1210, the sending module 1220, and the processing module 1230 can be used to implement the operations performed by the first AMF network element in S709 and S710.

[0539] As an example, the apparatus 1200 is used to implement Figure 7 When implementing the method by the AUSF network element, one or more of the receiving module 1210, the sending module 1220, and the processing module 1230 can be used to implement the operations performed by the AUSF network element in S709.

[0540] As an example, the apparatus 1200 is used to implement Figure 7 When implementing the method by the UDM network element, one or more of the receiving module 1210, the sending module 1220, and the processing module 1230 can be used to implement the operations performed by the AUSF network element in S709 and S710.

[0541] Optionally, the apparatus 1200 can also implement Figure 7 Each step / operation performed by the first home base station.

[0542] In a possible implementation, the apparatus 1200 can be used to implement Figure 8 Each step / operation performed by the first terminal or the AS.

[0543] As an example, the apparatus 1200 is used to implement Figure 8 When implementing the method by the first terminal, one or more of the receiving module 1210, the sending module 1220, and the processing module 1230 can be used to implement the operations performed by the first terminal in S801, and the sending module 1220 can be used to implement the operations performed by the first terminal in S802.

[0544] As an example, the apparatus 1200 is used to implementFigure 8 When implementing the method by the AS, one or more of the receiving module 1210, the sending module 1220, and the processing module 1230 can be used to implement the operations performed by the AS in S801, and the receiving module 1210 can be used to implement the operations performed by the AS in S802.

[0545] In a possible implementation, the apparatus 1200 can be used to implement Figure 9 each step / operation performed by the first terminal, the AMF network element, the NEF network element, or the AF network element in

[0546] As an example, when the apparatus 1200 is used to implement Figure 9 the method implemented by the first terminal in

[0547] As an example, when the apparatus 1200 is used to implement Figure 9 the method implemented by the AMF network element in

[0548] As an example, when the apparatus 1200 is used to implement Figure 9 the method implemented by the NEF network element in

[0549] As an example, when the apparatus 1200 is used to implement Figure 9 the method implemented by the AF network element in

[0550] Optionally, the apparatus 1200 can also implement Figure 9 each step / operation performed by the first home base station in

[0551] In a possible implementation, the apparatus 1200 can be used to implement Figure 10 each step / operation performed by the second terminal, the AS, the UDM network element, the NEF network element, or the AF network element in

[0552] As an example, when the apparatus 1200 is used to implement Figure 10When the method implemented by the second terminal, one or more of the receiving module 1210, the sending module 1220, and the processing module 1230 can be used to implement the operations performed by the second terminal in S1001, the receiving module 1210 can be used to implement the operations performed by the second terminal in S1003, and the sending module 1220 can be used to implement the operations performed by the second terminal in S1002.

[0553] As an example, the apparatus 1200 is used to implement Figure 10 When the method implemented by the AS, one or more of the receiving module 1210, the sending module 1220, and the processing module 1230 can be used to implement the operations performed by the AS in S1001, the receiving module 1210 can be used to implement the operations performed by the AS in S1002, and the sending module 1220 can be used to implement the operations performed by the AS in S1003.

[0554] As an example, the apparatus 1200 is used to implement Figure 10 When the method implemented by the AF network element, the receiving module 1210 can be used to implement the operations performed by the AF network element in S1008, and the sending module 1220 can be used to implement the operations performed by the AF network element in S1004.

[0555] As an example, the apparatus 1200 is used to implement Figure 10 When the method implemented by the NEF network element, the receiving module 1210 can be used to implement the operations performed by the NEF network element in S1004 and S1007, and the sending module 1220 can be used to implement the operations performed by the NEF network element in S1005 and S1008.

[0556] As an example, the apparatus 1200 is used to implement Figure 10 When the method implemented by the UDM network element, the receiving module 1210 can be used to implement the operations performed by the UDM network element in S1005, the sending module 1220 can be used to implement the operations performed by the UDM network element in S1007, and the processing module 1230 can be used to implement the operations performed by the UDM network element in S1006.

[0557] Optionally, the apparatus 1200 can also implement Figure 10 Each step / operation performed by the base station or the AMF.

[0558] In a possible implementation, the apparatus 1200 can be used to implement Figure 11 Each step / operation performed by the second terminal, the AMF network element, the UDM network element, the NEF network element, or the AF network element.

[0559] As an example, the apparatus 1200 is used to implement Figure 11When the method implemented by the second terminal, the receiving module 1210 can be used to implement the operations performed by the second terminal in S1109, and the sending module 1220 can be used to implement the operations performed by the second terminal in S1101.

[0560] As an example, the apparatus 1200 is used to implement Figure 11 When the method implemented by the AMF network element, the receiving module 1210 can be used to implement the operations performed by the AMF network element in S1101 and S1108, and the sending module 1220 can be used to implement the operations performed by the AMF network element in S1102 and S1109.

[0561] As an example, the apparatus 1200 is used to implement Figure 11 When the method implemented by the UDM network element, the receiving module 1210 can be used to implement the operations performed by the UDM network element in S1106, the sending module 1220 can be used to implement the operations performed by the UDM network element in S1108 and S1110, and the processing module 1230 can be used to implement the operations performed by the UDM network element in S1107.

[0562] As an example, the apparatus 1200 is used to implement Figure 11 When the method implemented by the NEF network element, the receiving module 1210 can be used to implement the operations performed by the NEF network element in S1102, S1105 and S1110, and the sending module 1220 can be used to implement the operations performed by the NEF network element in S1103, S1106 and S1111.

[0563] As an example, the apparatus 1200 is used to implement Figure 11 When the method implemented by the AF network element, the receiving module 1210 can be used to implement the operations performed by the AF network element in S1103 and S1111, the sending module 1220 can be used to implement the operations performed by the AF network element in S1105, and the processing module 1230 can be used to implement the operations performed by the AF network element in S1104.

[0564] Figure 13 This is a schematic structural diagram of a communication device provided in another embodiment of the present application. Figure 13 The shown apparatus 1300 can be used to implement the methods performed by the first terminal, the second terminal or each core network element in any of the foregoing embodiments.

[0565] As Figure 13 shown, the apparatus 1300 of this embodiment includes: a memory 1310, a processor 1320, a communication interface 1330, and a bus 1340. Among them, the memory 1310, the processor 1320, and the communication interface 1330 are communicatively connected to each other through the bus 1340.

[0566] The memory 1310 may be a read only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM). The memory 1310 may store a program. When the program stored in the memory 1310 is executed by the processor 1320, the processor 1320 is configured to execute each step / operation performed by the first terminal, the second terminal, or each core network element in any of the foregoing embodiments.

[0567] The processor 1320 may be a general-purpose central processing unit (CPU), a microprocessor, an application specific integrated circuit (ASIC), or one or more integrated circuits, and is configured to execute relevant programs to implement the communication method shown in the method embodiments of this application.

[0568] The processor 1320 may also be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the communication method shown in the method embodiments of this application may be completed by the integrated logic circuit in the hardware of the processor 1320 or by instructions in software form.

[0569] The foregoing processor 1320 may also be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. It can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0570] The steps of the method disclosed in combination with the embodiments of this application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor. The software module may be located in a mature storage medium in the art such as a random access memory, a flash memory, a read only memory, a programmable read only memory, or an electrically erasable programmable memory, a register, etc. This storage medium is located in the memory 1310. The processor 1320 reads the information in the memory 1310 and combines its hardware to complete the functions required to be executed by the units included in the communication device of this application. For example, it can execute each step / function performed by the first terminal, the second terminal, or each core network element in the foregoing embodiments.

[0571] Optionally, the memory 1310 and the processor 1320 may be integrated together.

[0572] The communication interface 1330 may use, but is not limited to, a transceiver device such as a transceiver to implement communication between the device 1300 and other devices or apparatuses.

[0573] The bus 1340 may include a path for transmitting information between various components of the device 1300 (e.g., the memory 1310, the processor 1320, the communication interface 1330).

[0574] In some embodiments of the present application, a computer program product is further provided. When the computer program product runs on a processor, the methods shown in the foregoing embodiments may be implemented. In some embodiments of the present application, a computer-readable storage medium is further provided. The computer-readable storage medium contains computer instructions. When the computer instructions run on a processor, the methods shown in the foregoing embodiments may be implemented.

[0575] It should be noted that the modules or components shown in the foregoing embodiments may be one or more integrated circuits configured to implement the above methods. For example: one or more application specific integrated circuits (ASICs), or, one or more digital signal processors (DSPs), or, one or more field programmable gate arrays (FPGAs), etc. Again, when a certain module above is implemented in the form of a processing element calling program code, the processing element may be a general-purpose processor, such as a central processing unit (CPU) or other processors such as a controller that can call program code. Again, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).

[0576] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware, software modules, or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions according to the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wirelessly (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more integrated available media. The available medium can be a magnetic medium (such as a floppy disk, hard disk, magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state disk (SSD)).

[0577] It can be understood that the various numerical numbers involved in the embodiments of the present application are only for the convenience of description and are not used to limit the scope of the embodiments of the present application.

[0578] It can be understood that in the embodiments of the present application, the magnitudes of the serial numbers of the above processes do not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

Claims

1. A communication method, characterized in that, The method is applied to a first functional network element, and the method includes: Receiving first information from a first terminal, where the first information indicates a second terminal allowed to access a first home base station, and the first terminal is a management terminal of the first home base station; Sending second information, where the second information indicates that indication information of a first closed access group is saved in the subscription data of the second terminal, and the first closed access group is a closed access group corresponding to the first home base station.

2. The method according to claim 1, characterized in that The first information includes indication information of the first closed access group and indication information of the second terminal.

3. The method according to claim 1 or 2, characterized in that, The first information further includes a restriction condition for the second terminal to access the first home base station.

4. A communication method, characterized in that, The method is applied to a first functional network element, and the method includes: Receiving first information from a first terminal, where the first information indicates a restriction condition for a visitor terminal to access a first home base station, and the first terminal is a management terminal of the first home base station; Receiving third information from a second terminal, where the third information includes a verification condition for the second terminal to access the first home base station, indication information of a first closed access group, and indication information of the second terminal, and the first closed access group is a closed access group corresponding to the first home base station; When the verification condition meets the restriction condition, sending second information, where the second information indicates that the indication information of the first closed access group is saved in the subscription data of the second terminal.

5. The method according to claim 4, characterized in that, The first information includes indication information of the first closed access group and indication information of the restriction condition.

6. The method according to any one of claims 3 to 5, characterized in that, The restriction condition includes at least one of the following conditions: usage time, usage duration, usage location, usage key, usage password, or usage bandwidth.

7. A communication method, characterized in that, The method is applied to a first terminal, and the method includes: Determining first information, where the first information indicates a second terminal allowed to access a first home base station, and the first terminal is a management terminal of the first home base station; Sending the first information to a first functional network element.

8. The method according to claim 7, wherein The first information includes indication information of a first closed access group and indication information of the second terminal, and the first closed access group is a closed access group corresponding to the first home base station.

9. The method according to claim 7 or 8, characterized in that, The first information further includes a restriction condition for the second terminal to access the first home base station.

10. A communication method, characterized in that, The method is applied to a first terminal, and the method includes: Determining first information, where the first information indicates a restriction condition for a visitor terminal to access a first home base station, and the first terminal is a management terminal of the first home base station; Sending the first information to a first functional network element.

11. The method according to claim 10, wherein The first information includes indication information of a first closed access group and indication information of the restriction condition, and the first closed access group is a closed access group corresponding to the first home base station.

12. The method according to any one of claims 9 to 11, characterized in that, The restriction condition includes at least one of the following conditions: usage time, usage duration, usage location, usage key, usage password, or usage bandwidth.

13. A communication method, characterized in that, The method is applied to a second terminal, and the method further includes: Send third information to a first functional network element, where the third information includes verification conditions for the second terminal to access a first home base station, indication information of a first closed access group, and indication information of the second terminal, and the first closed access group is the closed access group corresponding to the first home base station; Receive fourth information from the first functional network element, where the fourth information indicates that the second terminal is allowed to access the first home base station.

14. The method according to claim 13, wherein The indication information of the first closed access group includes an identifier of the first closed access group and / or an identifier of a first terminal, and the identifier of the first terminal is used to determine the identifier of the first closed access group, and the first terminal is a management terminal of the first home base station.

15. A communication method, characterized in that, The method is applied to an access and mobility management function (AMF) network element, and the method includes: Send fifth information to a second functional network element, where the fifth information is used to request to determine whether to allow a second terminal to access a first home base station, and the fifth information includes indication information of the second terminal; Receive sixth information from the second functional network element, where the sixth information indicates whether to allow the second terminal to access the first home base station.

16. The method according to claim 15, wherein The fifth information further includes indication information of a first closed access group, and the first closed access group is the closed access group corresponding to the first home base station.

17. The method according to claim 15 or 16, characterized in that, The sixth information includes indication information on whether to allow the second terminal to access the first home base station and / or information on the closed access group to which the second terminal is allowed to access.

18. The method according to claim 17, wherein When the sixth information includes information on the closed access group to which the second terminal is allowed to access, the method further includes: When the information on the closed access group to which the second terminal is allowed to access includes information on the closed access group corresponding to the first home base station, allow the second terminal to access the first home base station.

19. A communication method, characterized in that, The method is applied to a second functional network element, and the method includes: Receive fifth information from an access and mobility management function (AMF) network element, where the fifth information is used to request to determine whether to allow a second terminal to access a first home base station, and the fifth information includes indication information of the second terminal; Send sixth information to the AMF network element, where the sixth information indicates whether to allow the second terminal to access the first home base station.

20. The method according to claim 19, wherein The fifth information further includes indication information of a first closed access group, and the first closed access group is the closed access group corresponding to the first home base station.

21. The method according to claim 20, wherein The sixth information includes indication information on whether to allow the second terminal to access the first home base station and / or information on the closed access group to which the second terminal is allowed to access.

22. The method according to claim 20 or 21, characterized in that, Before sending the sixth information to the AMF network element, the method further includes: Determine whether to allow the second terminal to access the first home base station based on the fifth information and the information on the closed access group to which the second terminal is allowed to access.

23. The method according to claim 22, characterized in that, The method further includes: Receive first information from a first terminal, where the first information indicates a second terminal allowed to access the first home base station; Determine the information on the closed access group to which the second terminal is allowed to access based on the first information.

24. The method according to claim 23, wherein The first information includes indication information of the first closed access group and indication information of the second terminal.

25. The method according to claim 23 or 24, characterized in that, The first information further includes a restriction condition for the second terminal to access the first home base station, and the restriction condition includes at least one of the following conditions: usage time, usage duration, usage location, or usage bandwidth.

26. A communication system, characterized in that, A communication device for performing the method according to any one of claims 1 to 25.

27. A communication device, characterized in that, Each functional module for implementing the method according to any one of claims 1 to 25.

28. A communication device, characterized in that, Comprising: A processor coupled to a memory for storing a computer program, and when the processor calls the computer program, the device is caused to perform the method according to any one of claims 1 to 25.

29. A computer program product, characterized in that, Comprising computer program code which, when running on a computer, causes the computer to implement the method according to any one of claims 1 to 25.

30. A computer-readable medium, characterized in that, The computer-readable medium stores program code for execution by a computer, the program code including instructions for performing the method according to any one of claims 1 to 25.

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