WO2021190217A1

WO2021190217A1 - Method and device for processing closed access group information

Info

Publication number: WO2021190217A1
Application number: PCT/CN2021/077254
Authority: WO
Inventors: 李飞
Original assignee: 华为技术有限公司
Priority date: 2020-03-27
Filing date: 2021-02-22
Publication date: 2021-09-30
Also published as: CN113453311B; CN113453311A

Abstract

Disclosed are a method and device for processing closed access group information. The method comprises: a terminal device requests access to a closed access group cell on the basis of a first closed access group identifier, when the terminal device receives a registration rejected message of a mobility management network element, if the first closed access group identifier is consistent with a second closed access group identifier actually supported by the closed access group cell, then a closed access group identifier duplicating the first closed access group identifier or the second closed access group identifier is deleted from a list of closed access group identifiers to which the terminal device is permitted, thus allowing the accurate processing of the list of CAG identifiers to which the terminal device is permitted, and preventing an inadvertent deletion of a CAG identifier among the CAG identifier to which the terminal device is permitted.

Description

Method and device for processing closed access group information

Technical field

This application relates to the field of communication technology, and in particular to a method and device for processing closed access group information.

Background technique

A non-public network (NPN) is a network that provides services for specific users that is different from a public network. Non-public networks include two types: standalone NPN (standalone NPN, SNPN) and non-standalone NPN. The NPN of the independent network does not depend on the public land mobile network (PLMN) and is operated by the SNPN operator. Non-independent networking NPN is the integration of non-public networks (public network integrated NPNs, PNiNPN) in the public network. PNiNPN relies on the PLMN network and is operated by traditional operators. NPN can realize end-to-end resource isolation, provide exclusive access networks for vertical industries, restrict non-vertical industry terminal devices from attempting to access exclusive base stations or frequency bands, and ensure the exclusive use of resources by vertical industry customers. NPN can also provide support for local area network (LAN) services, which can meet the needs of companies, residences, schools, etc. for reliable and stable private networks.

PNiNPN provides NPN services through the PLMN network, for example, by assigning one or more network slice entities to the NPN to realize the NPN function, or through a dedicated data network name (DNN) to realize the NPN function .

Since network slicing cannot restrict terminal devices from attempting to access the network in their unauthorized network slicing area, for example, an enterprise may require users to only access corporate data in the corporate campus, but not outside the campus, but the network slicing mechanism cannot guarantee The limitation of this area. Therefore, closed access group (CG) technology can be used for access control. For example, only certain base stations support specific CAG, and users can only access the corresponding services in the area where the specific base station is located. Regional restrictions on user access to the business.

A closed access group identifier (CAG ID) is used to identify a subscriber group, and the subscriber group can access one or more CAG cells associated with the CAG ID. The CAG cell will broadcast its supported CAG ID in the broadcast message.

For example, the CAG cell broadcasts the closed access group identifiers it supports: CAG ID 1, 2, 5. The terminal device locally stores the allowed CAG list (allowed CAG list) at the time of signing the contract, for example, including CAG ID 1, 2, 3, and 4. According to the broadcast message, the terminal device determines that its allowed CAG list includes the CAG IDs supported by the CAG cell (ie CAG ID 1, 2), then the terminal device considers it can access the services of the CAG cell, and therefore requests access to the CAG cell The corresponding base station. However, if the CAG ID actually supported by the CAG cell is CAG5, then the CAG list allowed by the terminal device does not overlap with the CAGID supported by the CAG cell, and the access and mobility management function (AMF) entity refuses The registration request of the terminal device. After the terminal device receives the registration rejection request, it will mistakenly delete the CAG IDs that overlap with the CAG IDs broadcast by the CAG cell in the CAG list allowed by the terminal device from the list, that is, delete CAG IDs 1 and 2. These deleted CAG IDs may be It is supported by other CAG cells.

In view of this, how to accurately process the CAG identification in the CAG list allowed by the terminal device is a problem that needs to be solved.

Summary of the invention

This application provides a method and device for processing closed access group information to accurately process the CAG identifiers in the CAG list allowed by the terminal equipment, so that the terminal equipment does not delete the CAG identifiers in the CAG list by mistake.

In order to achieve the foregoing objectives, the following technical solutions are adopted in the embodiments of the present application:

In a first aspect, a method for processing closed access group information is provided. The method includes: receiving a first closed access group identifier sent by a closed access group cell; Sending a registration request message; receiving a registration rejection message sent by the mobility management network element, the registration rejection message carrying a reason value and a second closed access group identifier; and if the reason value indicates that the terminal device is not authorized to access Enter the closed access group or only authorize access to the closed access group cells (not authorized for this CAG or authorized for CAG cells only), and the first closed access group identifier and the second closed access group If the identifiers are consistent, the closed access group identifier that overlaps with the first closed access group identifier or the second closed access group identifier is deleted from the list of allowed closed access group identifiers of the terminal device.

In this aspect, after the terminal device receives the registration rejection message of the mobility management network element, if the first closed access group identifier is consistent with the second closed access group identifier, the terminal device is allowed to accept the closed access group identifier The closed access group ID that overlaps with the first closed access group ID or the second closed access group ID is deleted from the list, so that the list of allowed CAG IDs for terminal devices can be accurately processed to avoid accidental deletion of terminal devices that are allowed The CAG logo in the CAG logo.

With reference to the first aspect, in a possible implementation, the receiving the first closed access group identifier sent by the closed access group cell includes: receiving a broadcast message sent by the closed access group cell, the broadcast message Including the first closed access group identifier.

In this implementation, the closed access group cell sends the first CAG identifier through a broadcast message. However, the broadcast message is easy to be tampered with. If the terminal device directly deletes the CAG identifier that coincides with the first CAG identifier from the list of allowed CAG identifiers of the terminal device after receiving the registration rejection message of the mobility management network element, it may cause The CAG logo in the CAG list was deleted by mistake. Therefore, after the terminal device receives the registration rejection message of the mobility management network element, if the first closed access group ID is consistent with the second closed access group ID, it will be deleted from the list of allowed closed access group IDs of the terminal device The closed access group identifier that overlaps with the first closed access group identifier or the second closed access group identifier, so that the list of allowed CAG identifiers for terminal devices can be accurately processed, and the accidental deletion of the allowed CAG identifiers for terminal devices can be avoided The CAG logo.

With reference to the first aspect, in yet another possible implementation, the method further includes: if the first closed access group identifier is inconsistent with the second closed access group identifier, reserving all information in the terminal device The allowed closed access group identifier list, or delete the closed access group identifier that overlaps with the second closed access group identifier from the allowed closed access group identifier list of the terminal device.

In this implementation, if the first CAG identification is inconsistent with the second CAG identification, the allowed CAG identification list is retained, or the second CAG identification is used as a reference, and the overlap with the second CAG identification is deleted from the allowed CAG identification list The CAG identification of the CAG, in order to realize the accurate processing of the allowed CAG identification list.

With reference to the first aspect, in yet another possible implementation, the method further includes: if the first closed access group identifier is inconsistent with the second closed access group identifier, reporting to the mobility management network element Sending first information, where the first information is used to indicate that the first closed access group identifier has been tampered with.

In this implementation, the first information is used to inform the mobility management network element that the first CAG identifier has been tampered with, so that the mobility management network element can mark the CAG cell and improve the effectiveness of CAG cell access.

In a second aspect, a method for processing closed access group information is provided, the method comprising: receiving a registration request message sent by a terminal device through a closed access group cell; and sending a registration rejection message to the terminal device, the registration The rejection message carries a reason value and a second closed access group identifier, and the reason value indicates that the terminal device is not authorized to access the closed access group or only authorized to access the closed access group cell.

In this aspect, by sending a registration rejection message to the terminal device, after the terminal device receives the registration rejection message of the mobility management network element, if the first closed access group identifier is consistent with the second closed access group identifier, the terminal will receive Delete the closed access group ID that overlaps with the first closed access group ID or the second closed access group ID from the allowed closed access group ID list of the device, so that the allowed CAG ID list of the terminal device can be accurately processed , To avoid accidentally deleting the CAG logo in the allowed CAG logo of the terminal device.

With reference to the second aspect, in a possible implementation, the method further includes: receiving the second closed access group identifier sent by the closed access group cell.

In this implementation, the CAG cell sends the CAG identifier that it actually supports to the mobility management network element, so that the mobility management network element can accurately determine whether the terminal device is allowed to access the CAG cell.

With reference to the second aspect, in another possible implementation, the method further includes: receiving first information sent by the terminal device through the closed access group cell, where the first information is used to indicate the first information A closed access group identifier is tampered with; and marking the closed access group cell.

In this implementation, by receiving the first information sent by the terminal device, the mobility management network element is notified that the first CAG identifier has been tampered with, and the mobility management network element can mark the CAG cell to improve the effectiveness of CAG cell access.

In a third aspect, a terminal device is provided, which can implement the closed access group information processing method in the first aspect or any one of the possible implementation manners of the first aspect. For example, the terminal device may be a chip (such as a communication chip, etc.) or a device. The above method can be realized by software, hardware, or by hardware executing corresponding software.

In a possible implementation, the terminal device may include a unit or module that performs corresponding actions in the foregoing method.

Among them, the terminal equipment includes:

The transceiver unit is configured to receive the first closed access group identifier sent by the closed access group cell;

The transceiving unit is further configured to send a registration request message to the mobility management network element through the closed access group cell;

The transceiver unit is further configured to receive a registration rejection message sent by the mobility management network element, where the registration rejection message carries a reason value and a second closed access group identifier;

A processing unit, configured to: if the cause value indicates that the terminal is not authorized to access the closed access group or only authorized to access the closed access group cell, and the first closed access group identifier and the first closed access group identifier If the two closed access group IDs are consistent, the closed access group ID that overlaps with the first closed access group ID or the second closed access group ID is deleted from the list of allowed closed access group IDs of the terminal device .

Optionally, the transceiver unit is configured to receive a broadcast message sent by the closed access group cell, where the broadcast message includes the first closed access group identifier.

Optionally, the processing unit is further configured to, if the first closed access group identifier is inconsistent with the second closed access group identifier, reserve the allowed closed access group identifier in the terminal Or delete the closed access group identifier that overlaps with the second closed access group identifier from the list of closed access group identifiers allowed by the terminal device.

Optionally, the transceiving unit is further configured to send first information to the mobility management network element if the first closed access group identifier is inconsistent with the second closed access group identifier, and the first A piece of information is used to indicate that the first closed access group identifier has been tampered with.

In another possible implementation, the terminal device includes:

The input interface is used to obtain the first closed access group identifier output by the closed access group cell;

An output interface, configured to output a registration request message to a mobility management network element through the closed access group cell;

The input interface is also used to obtain a registration rejection message output by the mobility management network element, where the registration rejection message carries a reason value and a second closed access group identifier;

The processing circuit is configured to, if the cause value indicates that the terminal is not authorized to access the closed access group or only authorized to access the closed access group cell, and the first closed access group identifier and the first closed access group identifier If the two closed access group IDs are consistent, the closed access group ID that overlaps with the first closed access group ID or the second closed access group ID is deleted from the list of allowed closed access group IDs of the terminal device .

Optionally, the input interface is used to obtain a broadcast message output by a cell of the closed access group, where the broadcast message includes the first closed access group identifier.

Optionally, the output interface is further configured to output first information to the mobility management network element if the first closed access group identifier is inconsistent with the second closed access group identifier. A piece of information is used to indicate that the first closed access group identifier has been tampered with.

In another possible implementation, the terminal device includes a processor, and the processor is used for the closed access group information processing method in the first aspect or any one of the possible implementation manners of the first aspect.

In another possible implementation, the terminal device includes a processor, configured to execute a program stored in a memory, and when the program is executed, the terminal device is caused to execute the first aspect or any one of the first aspects. A closed access group information processing method in a possible implementation manner.

Exemplarily, the terminal device further includes a memory, and the memory is coupled with the at least one processor.

Exemplarily, the memory is located outside the terminal device.

Exemplarily, the terminal device further includes a communication interface, and the communication interface is used for the terminal device to communicate with other devices. The communication interface can be a transceiver, an input/output interface, or a circuit.

In another possible implementation, the terminal device includes a processor, a memory, and a computer program that is stored in the memory and can run on the processor. When the computer program is executed, the terminal is The device executes the closed access group information processing method in the foregoing first aspect or any one of the possible implementation manners of the first aspect.

Among them, the technical effects brought by any one of the implementation manners of the third aspect can be referred to the technical effects brought about by the different implementation manners of the above-mentioned first aspect, which will not be repeated here.

In a fourth aspect, a mobility management network element is provided, which can implement the closed access group information processing method in the second aspect or any of the possible implementation manners of the second aspect. For example, the mobile management network element may be a chip (such as a communication chip, etc.) or a device. The above method can be realized by software, hardware, or by hardware executing corresponding software.

In a possible implementation, the mobility management network element may include a unit or module that performs corresponding actions in the foregoing method.

Among them, the mobility management network element includes:

The transceiver unit is configured to receive a registration request message sent by a terminal device through a closed access group cell;

The transceiver unit is further configured to send a registration rejection message to the terminal device, the registration rejection message carrying a reason value and a second closed access group identifier, and the reason value indicates that the terminal device is not authorized to access the closed access group. Access group or only authorized access to closed access group cells.

Optionally, the transceiver unit is further configured to receive the second closed access group identifier sent by the closed access group cell.

Optionally, the transceiver unit is further configured to receive first information sent by the terminal device through the closed access group cell, where the first information is used to indicate that the first closed access group identifier has been tampered with ；

The mobility management network element further includes: a processing unit configured to mark the closed access group cell.

In another possible implementation, the mobility management network element includes:

The input interface is used to input the registration request message output by the terminal equipment through the closed access group cell;

The output interface is also used to output a registration rejection message to the terminal device, the registration rejection message carrying a reason value and a second closed access group identifier, and the reason value indicates that the terminal device is not authorized to access the closed access Group or only authorized to access the closed access group cell.

Optionally, the input interface is also used to input the second closed access group identifier output by the access network device.

Optionally, the input interface is also used to input first information output by the terminal device through the closed access group cell, and the first information is used to indicate that the first closed access group identifier has been tampered with ；

The mobility management network element further includes: a processing circuit for marking the closed access group cell.

In another possible implementation, the mobility management network element includes a processor, and the processor is used in the method for processing closed access group information in the foregoing second aspect or any possible implementation manner of the second aspect.

In another possible implementation, the mobility management network element includes a processor, configured to execute a program stored in a memory, and when the program is executed, the mobility management network element is caused to execute the second aspect or the second aspect. A closed access group information processing method in any possible implementation manner of the aspect.

Exemplarily, the mobility management network element further includes a memory, and the memory is coupled with the at least one processor.

Exemplarily, the memory is located outside the mobility management network element.

Exemplarily, the mobility management network element further includes a communication interface, and the communication interface is used for the mobility management network element to communicate with other devices. The communication interface can be a transceiver, an input/output interface, or a circuit.

In another possible implementation, the mobility management network element includes a processor, a memory, and a computer program stored on the memory and running on the processor. When the computer program is executed, the The mobility management network element executes the closed access group information processing method in the second aspect or any one of the possible implementation manners of the second aspect.

Among them, the technical effects brought about by any one of the implementation manners of the fourth aspect can be referred to the technical effects brought about by the different implementation manners of the above-mentioned second aspect, which will not be repeated here.

In a fifth aspect, a method for processing closed access group information is provided. The method includes: receiving a first closed access group identifier sent by a closed access group cell; Sending a registration request message; receiving an updated closed access group identification list allowed for terminal equipment; and closed access group identifications that the updated closed access group identification list allowed for terminal equipment overlaps with the first closed access group identification The access group identifier disconnects the connection with the closed access group cell.

In this aspect, when the terminal device obtains the updated closed access group identifier list that the terminal device is allowed to send from the mobility management network element, if it has a CAG identifier that overlaps with the first closed access group identifier, it does not access The closed access group cell to improve the reliability of communication.

In one implementation, the list of closed access group identifiers allowed for the updated terminal device includes any one of the following operations: receiving a configuration update message, the configuration update message including the closed access group allowed for the updated terminal device Access group identification list; or, receiving a registration rejection message, the registration rejection message including a reason value and the updated closed access group identification list allowed by the terminal device, the reason value indicating that the terminal device is not authorized Access to the closed access group or only authorized to access the closed access group cell.

In this implementation, when the mobility management network element determines that the terminal device cannot access the CAG cell, it can obtain an updated list of CAG identities allowed by the terminal device, and can send the updated information through a special configuration update message or in a registration rejection message. The list of CAG IDs allowed by the terminal device.

In yet another implementation, the method further includes: the updated closed access group identifier list allowed by the terminal device and the first closed access group identifier overlap with the closed access group identifier, and the closed access group identifier is passed through the closed access group identifier. The access group cell sends first information to the mobility management network element, where the first information is used to indicate that the first closed access group identifier has been tampered with.

In another implementation, the receiving the first closed access group identifier sent by the closed access group cell includes: receiving a broadcast message sent by the closed access group cell, the broadcast message including the first closed access group Entry ID.

In this implementation, the closed access group cell sends the first CAG identifier through a broadcast message. However, the broadcast message is easy to be tampered with, and the first CAG identifier carried in the broadcast message may be tampered with, which is different from the second CAG identifier actually supported by the closed access group cell.

In a sixth aspect, a method for processing closed access group information is provided. The method includes: receiving a registration request message sent by a terminal device through a closed access group cell; the terminal device is not authorized to access the closed access group or Only authorize access to the closed access group cell, update the configuration of the allowed closed access group identification list of the terminal device; and send the updated closed access group identification list of the terminal device to the terminal device .

In this aspect, the mobility management network element sends an updated closed access group identification list allowed by the terminal device to the terminal device, and the terminal device obtains the updated closed access group identification allowed by the terminal device sent by the mobility management network element. In the list, if there is a CAG identifier that overlaps the first closed access group identifier, the closed access group cell is not accessed, so as to improve the reliability of communication.

In an implementation, the method further includes: receiving a second closed access group identifier sent by the closed access group cell.

In another implementation, the sending an updated closed access group identification list allowed by the terminal device to the terminal device includes any one of the following operations: sending a configuration update message to the terminal device, and the configuration The update message includes the closed access group identification list allowed by the updated terminal device; or, sends a registration rejection message to the terminal device, the registration rejection message includes the reason value and the closed access group allowed by the updated terminal device Access group identification list, the reason value indicates that the terminal device is not authorized to access the closed access group or only authorized to access the closed access group cell.

In another implementation, the method further includes: receiving first information sent by the terminal device through the closed access group cell, the first information being used to indicate that the first closed access group identifier has been tampered with ; And mark the closed access group cell.

In a seventh aspect, a terminal device is provided, which can implement the closed access group information processing method in the fifth aspect or any one of the possible implementation manners of the fifth aspect. For example, the terminal device may be a chip (such as a communication chip, etc.) or a device. The above method can be realized by software, hardware, or by hardware executing corresponding software.

Among them, the terminal equipment includes:

The transceiving unit is further configured to receive an updated closed access group identification list allowed for terminal equipment; and

The processing unit is configured to: the updated closed access group identifier list of the terminal equipment allowed and the closed access group identifier overlap with the first closed access group identifier, and disconnect the closed access group identifier from the closed access group cell. connect.

Optionally, the transceiving unit is configured to perform any one of the following operations: receiving a configuration update message, the configuration update message including a closed access group identification list allowed by the updated terminal device; or, receiving registration rejection Message, the registration rejection message includes a reason value and the updated closed access group identification list allowed by the terminal device, and the reason value indicates that the terminal device is not authorized to access the closed access group or only authorized to access Closed access group cell.

Optionally, the transceiving unit is further used for the updated closed access group identifier list allowed by the terminal device and the closed access group identifier that overlaps with the first closed access group identifier, through the closed access group identifier. The access group cell sends first information to the mobility management network element, where the first information is used to indicate that the first closed access group identifier has been tampered with.

In another possible implementation, the terminal device includes:

The output interface is used to output a registration request message to the mobility management network element through the closed access group cell; the input interface is also used to obtain an updated closed access group identification list allowed by the terminal device; and a processing circuit, There is a closed access group identifier that overlaps with the first closed access group identifier for the updated list of allowed closed access group identifiers of the terminal equipment, and the connection with the closed access group cell is disconnected.

Optionally, the input interface is configured to perform any one of the following operations: obtain a configuration update message, the configuration update message including a closed access group identification list allowed by the updated terminal device; or, obtain registration rejection Message, the registration rejection message includes a reason value and the updated closed access group identification list allowed by the terminal device, and the reason value indicates that the terminal device is not authorized to access the closed access group or only authorized to access Closed access group cell.

Optionally, the output interface is also used for the closed access group identification that the updated closed access group identification list allowed by the terminal device overlaps with the first closed access group identification, through the closed access group identification. The access group cell outputs first information to the mobility management network element, where the first information is used to indicate that the first closed access group identifier has been tampered with.

In another possible implementation, the terminal device includes a processor, and the processor is used in the closed access group information processing method in the fifth aspect or any one of the possible implementation manners of the fifth aspect.

In another possible implementation, the terminal device includes a processor, configured to execute a program stored in a memory, and when the program is executed, the terminal device is caused to execute any one of the fifth aspect or the fifth aspect. A closed access group information processing method in a possible implementation manner.

Exemplarily, the memory is located outside the terminal device.

In another possible implementation, the terminal device includes a processor, a memory, and a computer program that is stored in the memory and can run on the processor. When the computer program is executed, the terminal is The device executes the closed access group information processing method in the fifth aspect or any one of the possible implementation manners of the fifth aspect.

Among them, the technical effects brought by any one of the implementation manners of the seventh aspect can be referred to the technical effects brought about by the different implementation manners of the above-mentioned fifth aspect, which will not be repeated here.

In an eighth aspect, a mobility management network element is provided, which can implement the closed access group information processing method in the sixth aspect or any one of the possible implementation manners of the sixth aspect. For example, the mobile management network element may be a chip (such as a communication chip, etc.) or a device. The above method can be realized by software, hardware, or by hardware executing corresponding software.

Among them, the mobility management network element includes:

A processing unit, used for the terminal device not authorized to access the closed access group or only authorized to access the closed access group cell, and update the configuration of the closed access group identification list allowed by the terminal device; and

The transceiving unit is further configured to send an updated closed access group identification list allowed by the terminal device to the terminal device.

Optionally, the transceiver unit is configured to receive a second closed access group identifier sent by the closed access group cell.

Optionally, the transceiving unit is configured to perform any one of the following operations: sending a configuration update message to the terminal device, the configuration update message including a closed access group identification list allowed by the updated terminal device; Or, sending a registration rejection message to the terminal device, the registration rejection message including a reason value and the updated closed access group identification list allowed by the terminal device, the reason value indicating that the terminal device is not authorized to access Enter the closed access group or only authorize access to the closed access group cell.

Optionally, the transceiving unit is configured to receive first information sent by the terminal device through the closed access group cell, where the first information is used to indicate that the first closed access group identifier has been tampered with; as well as

The mobile management network element also includes:

The processing unit is configured to mark the closed access group cell.

The input interface is used to obtain the registration request message output by the terminal device through the closed access group cell;

A processing circuit, which is used for the terminal device not authorized to access the closed access group or only authorized to access the closed access group cell, and to update the configuration of the closed access group identification list allowed by the terminal device; and

The output interface is used to output the updated closed access group identification list allowed by the terminal device to the terminal device.

Optionally, the input interface is used to obtain a second closed access group identifier output by the closed access group cell.

Optionally, the output interface is configured to perform any one of the following operations: output a configuration update message to the terminal device, where the configuration update message includes a closed access group identification list allowed by the updated terminal device; Or, output a registration rejection message to the terminal device, the registration rejection message including a reason value and the updated closed access group identification list allowed by the terminal device, the reason value indicating that the terminal device is not authorized to access Enter the closed access group or only authorize access to the closed access group cell.

Optionally, the input interface is used to obtain first information output by the terminal device through the closed access group cell, and the first information is used to indicate that the first closed access group identifier has been tampered with; And the processing circuit is used to mark the closed access group cell.

In another possible implementation, the mobility management network element includes a processor, and the processor is used in the closed access group information processing method in the sixth aspect or any one of the possible implementation manners of the sixth aspect.

In another possible implementation, the mobility management network element includes a processor, configured to execute a program stored in a memory, and when the program is executed, the mobility management network element is caused to execute the sixth aspect or the sixth aspect. A closed access group information processing method in any possible implementation manner of the aspect.

In another possible implementation, the mobility management network element includes a processor, a memory, and a computer program stored on the memory and running on the processor. When the computer program is executed, the The mobility management network element executes the closed access group information processing method in the sixth aspect or any one of the possible implementation manners of the sixth aspect.

Among them, the technical effects brought by any one of the implementation manners of the eighth aspect can be referred to the technical effects brought about by the different implementation manners of the above-mentioned sixth aspect, which will not be repeated here.

In a ninth aspect, a method for processing closed access group information is provided. The method includes: receiving a first closed access group identifier sent by a closed access group cell; Send a registration request message, the registration request message includes the first closed access group identifier; receive a registration rejection message sent by a mobility management network element, the registration rejection message includes a reason value, and the registration rejection message is also used for Indicating that the first closed access group identifier is incorrect; and if the cause value indicates that the terminal device is not authorized to access the closed access group or only authorized to access the closed access group cell, the terminal device is allowed to be closed A closed access group identifier that overlaps with the first closed access group identifier is reserved in the access group identifier list.

In this aspect, the terminal device retains the CAG identifier that coincides with the first CAG identifier in the list of allowed CAG identifiers of the terminal device according to the error of the first CAG identifier indicated by the mobility management network element, so as to identify the allowed CAG identifier. The list is processed accurately to avoid accidentally deleting the CAG logo in the allowed CAG logo.

In one implementation, the receiving the first closed access group identifier sent by the closed access group cell includes: receiving a broadcast message sent by the closed access group cell, the broadcast message including the first closed access Group ID.

In another implementation, the error of the first closed access group identifier includes: the first closed access group identifier is inconsistent with the second closed access group identifier supported by the closed access group cell.

In a tenth aspect, a method for processing closed access group information is provided, the method includes: receiving a registration request message sent by a terminal device through a closed access group cell, the registration request message including a first closed access group identifier; Determining that the first closed access group identifier is incorrect; and sending a registration rejection message to the terminal device, where the registration rejection message includes a reason value, and the registration rejection message is also used to indicate the first closed access group Identification error.

In this aspect, the mobility management network element indicates the first CAG identification error to the terminal device, so that the terminal device retains the first CAG identification error in the CAG identification list allowed by the terminal device according to the first CAG identification error indicated by the mobility management network element. A CAG logo with overlapping CAG logos can be used to accurately process the allowed CAG logo list to avoid accidentally deleting the CAG logo in the allowed CAG logo.

In yet another implementation, the determining that the first closed access group identifier is incorrect includes: the first closed access group identifier is inconsistent with the second closed access group identifier, and determining that the first closed access group identifier is inconsistent Wrong entry ID.

In an eleventh aspect, a terminal device is provided, which can implement the closed access group information processing method in the ninth aspect or any one of the possible implementation manners of the ninth aspect. For example, the terminal device may be a chip (such as a communication chip, etc.) or a device. The above method can be realized by software, hardware, or by hardware executing corresponding software.

Among them, the terminal equipment includes:

The transceiver unit is further configured to send a registration request message to a mobility management network element through the closed access group cell, where the registration request message includes the first closed access group identifier;

The transceiving unit is further configured to receive a registration rejection message sent by a mobility management network element, the registration rejection message includes a reason value, and the registration rejection message is also used to indicate that the first closed access group identifier is incorrect; and

A processing unit, configured to, if the cause value indicates that the terminal device is not authorized to access the closed access group or only authorized to access the closed access group cell, reserve and A closed access group identifier that overlaps with the first closed access group identifier.

Optionally, the error of the first closed access group identifier includes: the first closed access group identifier is inconsistent with the second closed access group identifier supported by the closed access group cell.

In another possible implementation, the terminal device includes:

An output interface, configured to output a registration request message to a mobility management network element through the closed access group cell, where the registration request message includes the first closed access group identifier;

The input interface is used to obtain the registration rejection message sent by the mobility management network element, where the registration rejection message includes the reason value, and

A processing circuit for the registration rejection message and also for indicating that the first closed access group identifier is wrong; and if the cause value indicates that the terminal device is not authorized to access the closed access group or only authorized to access the closed access group In the cell into the group, the closed access group identifier that overlaps with the first closed access group identifier is reserved in the closed access group identifier list allowed by the terminal device.

In another possible implementation, the terminal device includes a processor, and the processor is used in the closed access group information processing method in the ninth aspect or any one of the possible implementation manners of the ninth aspect.

In another possible implementation, the terminal device includes a processor, configured to execute a program stored in a memory, and when the program is executed, the terminal device is caused to execute any one of the ninth aspect or the ninth aspect. A closed access group information processing method in a possible implementation manner.

Exemplarily, the memory is located outside the terminal device.

In another possible implementation, the terminal device includes a processor, a memory, and a computer program that is stored in the memory and can run on the processor. When the computer program is executed, the terminal is The device executes the closed access group information processing method in the ninth aspect or any one of the possible implementation manners of the ninth aspect.

Among them, the technical effects brought by any one of the implementations of the eleventh aspect can be referred to the technical effects brought about by the different implementations of the ninth aspect, which will not be repeated here.

A twelfth aspect provides a mobility management network element, which can implement the closed access group information processing method in the tenth aspect or any one of the possible implementation manners of the tenth aspect. For example, the mobile management network element may be a chip (such as a communication chip, etc.) or a device. The above method can be realized by software, hardware, or by hardware executing corresponding software.

Among them, the mobility management network element includes:

A transceiver unit, configured to receive a registration request message sent by a terminal device through a closed access group cell, where the registration request message includes the first closed access group identifier;

A processing unit, configured to determine that the first closed access group identifier is wrong; and

The transceiver unit is further configured to send a registration rejection message to the terminal device, the registration rejection message includes a reason value, and the registration rejection message is also used to indicate that the first closed access group identifier is incorrect.

Optionally, the processing unit is configured to determine that the first closed access group identifier is inconsistent with the second closed access group identifier, and determine that the first closed access group identifier is incorrect.

An input interface, used to obtain a registration request message output by a terminal device through a closed access group cell, where the registration request message includes the first closed access group identifier;

A processing circuit for determining that the first closed access group identifier is wrong; and

The output interface is used to output a registration rejection message to the terminal device, the registration rejection message includes a reason value, and the registration rejection message is also used to indicate that the first closed access group identifier is wrong.

Optionally, the input interface is also used to obtain a second closed access group identifier output by the closed access group cell.

Optionally, the processing circuit is configured to determine that the first closed access group identifier is inconsistent with the second closed access group identifier, and determine that the first closed access group identifier is incorrect.

In another possible implementation, the mobility management network element includes a processor, and the processor is used in the closed access group information processing method in the tenth aspect or any one of the possible implementation manners of the tenth aspect.

In another possible implementation, the mobility management network element includes a processor, configured to execute a program stored in a memory, and when the program is executed, the mobility management network element is caused to execute the tenth aspect or the tenth aspect. A closed access group information processing method in any possible implementation manner of the aspect.

In another possible implementation, the mobility management network element includes a processor, a memory, and a computer program stored on the memory and running on the processor. When the computer program is executed, the The mobility management network element executes the closed access group information processing method in the tenth aspect or any one of the possible implementation manners of the tenth aspect.

Among them, the technical effects brought by any implementation manner of the tenth aspect can be referred to the technical effects brought about by the different implementation manners of the tenth aspect, which will not be repeated here.

In a thirteenth aspect, a communication system is provided, which includes the aforementioned terminal equipment, access network equipment, and mobility management network elements.

In a fourteenth aspect, a computer-readable storage medium is provided, which stores a computer program, and when it runs on a computer, the above-mentioned aspects or any one of the above-mentioned aspects is executed.

In a fifteenth aspect, a computer program product is provided, which, when run on a computer, enables the foregoing aspects or any one of the foregoing aspects to be executed.

In a sixteenth aspect, a computer program is provided, which, when run on a computer, enables the foregoing aspects or any one of the foregoing aspects to be executed.

In a seventeenth aspect, a method for processing closed access group information is provided. The method includes: receiving a first closed access group identifier sent by a closed access group cell; Sending a registration request message; receiving a registration rejection message sent by the mobility management function, the registration rejection message carrying a reason value and a hash value of the second closed access group identifier; and if the reason value indicates the terminal device Is not authorized to access the closed access group or only authorized for access to the closed access group cell (not authorized for this CAG or authorized for CAG cells only), and the hash value of the first closed access group identifier is equal to If the hash values of the second closed access group identifiers are consistent, the closed access group identifiers that overlap with the first closed access group identifiers are deleted from the list of allowed closed access group identifiers of the terminal device.

In this aspect, the hash value of the first closed access group identifier is obtained by the terminal device performing a hash operation on the first closed access group identifier.

In this aspect, after the terminal device receives the registration rejection message of the mobility management network element, if the hash value of the first closed access group identifier is consistent with the hash value of the second closed access group identifier, the terminal device will receive The closed access group identifier that overlaps with the first closed access group identifier is deleted from the list of allowed closed access group identifiers, so that the list of allowed CAG identifiers for terminal devices can be accurately processed to avoid accidental deletion of terminal devices that are allowed The CAG logo in the CAG logo.

In this implementation, the closed access group cell sends the first CAG identifier through a broadcast message. However, the broadcast message is easy to be tampered with. If the terminal device directly deletes the CAG identifier that coincides with the first CAG identifier from the list of allowed CAG identifiers of the terminal device after receiving the registration rejection message of the mobility management network element, it may cause The CAG logo in the CAG list was deleted by mistake. Therefore, after the terminal device receives the registration rejection message of the mobility management network element, if the hash value of the first closed access group identifier is consistent with the hash value of the second closed access group identifier, it will be allowed from the terminal device. The closed access group identifiers that overlap with the first closed access group identifiers are deleted from the closed access group identifier list, so that the list of allowed CAG identifiers for terminal devices can be accurately processed to avoid accidental deletion of CAG identifiers allowed for terminal devices The CAG logo.

With reference to the first aspect, in yet another possible implementation, the method further includes: if the hash value of the first closed access group identifier is inconsistent with the hash value of the second closed access group identifier, Then the terminal device retains the allowed closed access group identification list, or discards the registration rejection message.

With reference to the first aspect, in yet another possible implementation, the method further includes: if the hash value of the first closed access group identifier is inconsistent with the hash value of the second closed access group identifier, Then, first information is sent to the mobility management network element, where the first information is used to indicate that the first closed access group identifier has been tampered with.

In an eighteenth aspect, a method for processing closed access group information is provided, the method comprising: receiving a registration request message sent by a terminal device through a closed access group cell; and sending a registration rejection message to the terminal device, the The registration rejection message carries a cause value and a hash value of the second closed access group identifier, and the cause value indicates that the terminal device is not authorized to access the closed access group or only authorized to access the closed access group cell.

In this aspect, the hash value of the second closed access group identifier is obtained by the mobility management function performing a hash operation on the second closed access group identifier.

In this aspect, by sending a registration rejection message to the terminal device, after the terminal device receives the registration rejection message of the mobility management network element, if the hash value of the first closed access group identifier is equal to that of the second closed access group identifier Only when the hash value is consistent, the closed access group identifier that overlaps with the first closed access group identifier is deleted from the allowed closed access group identifier list of the terminal device, so that the allowed CAG identifier list of the terminal device can be accurately processed , To avoid accidentally deleting the CAG logo in the allowed CAG logo of the terminal device.

Description of the drawings

FIG. 1 is a schematic diagram of the architecture of a communication system to which the method for processing closed access group information according to an embodiment of the present application is applied;

Figure 2 shows the non-roaming architecture based on the service-oriented interface of the fifth-generation mobile communication network;

Figure 3 is a reference point-based non-roaming architecture of the fifth-generation mobile communication network;

FIG. 4 is a schematic flowchart of a method for processing closed access group information according to an embodiment of this application;

FIG. 4a is another schematic flowchart of a method for processing closed access group information provided by an embodiment of this application;

FIG. 5 is another schematic flowchart of a method for processing closed access group information provided by an embodiment of this application;

FIG. 6 is another schematic flowchart of a method for processing closed access group information provided by an embodiment of this application;

FIG. 7 is a schematic structural diagram of a communication device provided by an embodiment of the application;

FIG. 8 is a schematic structural diagram of a terminal device provided by an embodiment of this application;

FIG. 9 is another schematic structural diagram of a terminal device provided by an embodiment of the application;

FIG. 10 is another schematic structural diagram of a terminal device provided by an embodiment of this application;

FIG. 11 is a schematic structural diagram of a mobility management network element provided by an embodiment of this application;

FIG. 12 is another schematic structural diagram of a mobility management network element provided by an embodiment of this application;

FIG. 13 is another schematic structural diagram of a mobility management network element provided by an embodiment of this application.

Detailed ways

The embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

The technical solutions of the embodiments of the present application can be applied to various communication systems. For example: the 5th generation (5G) system or the new radio (NR), etc. The 5G mobile communication system involved in this application includes a non-standalone (NSA) 5G mobile communication system or Standalone (SA) 5G mobile communication system. The technical solution provided in this application can also be applied to future communication systems, such as the sixth-generation mobile communication system. The communication system can also be a public land mobile network (PLMN) network, a device-to-device (D2D) communication system, a machine-to-machine (M2M) communication system, and a device-to-device (D2D) communication system. Internet of Things (IoT) communication system or other communication systems.

FIG. 1 is a schematic diagram of the architecture of a communication system to which the method for processing closed access group information according to an embodiment of the present application is applied. As shown in Figure 1, the communication system includes a terminal device, one or more access network devices (Figure 1 takes one access network device as an example for illustration), and a mobility management network element. Among them, the network element or entity corresponding to the mobility management network element may be an access and mobility management function (AMF) entity in the 5G mobile communication system, which is not specifically limited in the embodiment of the application . The terminal device, the access network device, or the mobility management network element can communicate directly between each other, and can also communicate through the forwarding of other devices, which is not specifically limited in the embodiment of the present application. Although not shown, the communication system may also include other network elements, which are not specifically limited in the embodiment of the present application.

Specifically, taking the non-roaming architecture based on the service-oriented interface of the fifth-generation mobile communication network shown in FIG. 2 and the non-roaming architecture based on the reference point of the fifth-generation mobile communication network shown in FIG. 3 as examples, the communication system Mainly include AMF entity, session management function (Session Management Function, SMF) entity, user plane function (UPF) entity, network exposure function (NEF) entity, and application function (AF) entity. It may also include a policy control function (PCF) entity, a unified database function (unified data repository, UDR) entity, and a unified data management (unified data management, UDM) entity. It should be noted that the functional entities and functions of the functional entities included in Figure 2 and Figure 3 can be the same. Since Figure 2 is based on a service-oriented interface, the message sent by one functional entity to another functional entity needs to carry this The identification of another functional entity; in Figure 3, since it is based on a reference point, the messages between functional entities are interface messages and do not need to carry the identification of the functional entity.

Among them, the functions of each functional entity in Figure 2 and Figure 3 are as follows:

AMF entity: Mainly responsible for signaling processing, such as access control, mobility management, attachment and detachment, and gateway selection. When the AMF entity provides services for the session in the terminal, it will provide storage resources of the control plane for the session to store the session identifier, the SMF entity identifier associated with the session identifier, and so on.

SMF entity: Mainly responsible for session management, specifically responsible for the selection of user plane functional entities, the redirection of user plane functional entities, the allocation of Internet Protocol (IP) addresses, the establishment, modification and release of bearers, and the quality of service , QoS) control.

UPF entity: responsible for forwarding and receiving user data in the terminal. User data can be received from the data network and transmitted to the terminal through the access network device; user data can also be received from the terminal through the access network device and forwarded to the data network. The transmission resources and scheduling functions of the UPF entity that provide services for the terminal are managed and controlled by the SMF entity.

NEF entity: It mainly supports safe interaction between 3GPP network and third-party applications. NEF can safely open network capabilities and events to third-party applications to enhance or improve application service quality. 3GPP networks can also securely obtain relevant data from third-party applications to enhance intelligent network decision-making; at the same time, the functional entity supports Recover structured data from UDR or store structured data in UDR.

AF entity: It mainly supports interaction with 3GPP network to provide services, such as influencing data routing decisions, policy control functions, or providing some business services to the network side (these services can be a third party (3 ^rd party) or not a third party) of).

PCF entity: It mainly supports the provision of a unified policy framework to control network behavior, provides policy rules to the control layer network functions, and is responsible for obtaining user subscription information related to policy decisions.

UDR entity: Mainly responsible for storing structured data. The stored content includes contracted data and policy data, structured data exposed to the outside world, and application-related data.

UDM entity: Mainly used to manage user subscription information.

It should be noted that the above functional entity is only a name, and the name itself does not constitute a restriction on the entity. For example, the session management function entity may also be replaced with "session management function" or other names. Moreover, the session management function entity may also correspond to an entity that includes other functions in addition to the session management function. The user plane function entity may also be replaced with "user plane function" or other names, and the user plane function entity may also correspond to an entity that includes other functions in addition to the user plane function. Here is a unified description, and will not be repeated below.

Terminal equipment accesses the network through radio access network (RAN) equipment or access network (AN) equipment. The RAN device is mainly a wireless network device in the 3GPP network, and the AN may be an access network device defined by non-3GPP.

Optionally, the terminal equipment (terminal equipment) in the embodiments of the present application may refer to an access terminal, a user unit, a user station, a mobile station, a mobile station, a relay station, a remote station, a remote terminal, a mobile device, a user terminal (user terminal). ), user equipment (UE), terminal (terminal), wireless communication equipment, user agent, user device, cellular phone, cordless phone, session initiation protocol (SIP) phone, wireless local loop (wireless local loop, WLL) stations, personal digital assistants (personal digital assistants, PDAs), handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, and future 5G networks Terminal devices or terminal devices in the future evolved public land mobile network (PLMN) or terminal devices in the future Internet of Vehicles, etc., which are not limited in the embodiment of the present application.

As an example and not a limitation, in the embodiments of the present application, the terminal device may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality terminal device, an augmented reality terminal device, a wireless terminal in industrial control, and an unmanned driving vehicle. Wireless terminals in remote operations, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, and wireless terminals in smart homes.

As an example and not a limitation, in the embodiments of the present application, wearable devices can also be referred to as wearable smart devices. It is a general term for using wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, Gloves, watches, clothing and shoes, etc. A wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not only a kind of hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets and smart jewelry for physical sign monitoring.

In addition, in the embodiments of the present application, the terminal device can also be a terminal device in the IoT system. IoT is an important part of the development of information technology in the future. Its main technical feature is to connect objects to the network through communication technology to realize man-machine Interconnection, an intelligent network of interconnection of things. In the embodiments of the present application, the IOT technology can achieve massive connections, deep coverage, and power-saving terminals through, for example, narrow band (narrow band, NB) technology.

In addition, in the embodiments of this application, the terminal equipment may also include sensors such as smart printers, train detectors, gas stations, etc. The main functions include collecting data (part of the terminal equipment), receiving control information and downlink data from access network equipment, and Send electromagnetic waves to transmit uplink data to the access network equipment.

Optionally, the access network device in the embodiment of the present application may be any communication device with a wireless transceiving function that is used to communicate with a terminal device. The access network equipment includes, but is not limited to: evolved node B (evolved node B, eNB), baseband unit (BBU), access point (access point in wireless fidelity, WIFI) system, AP), wireless relay node, wireless backhaul node, transmission point (TP) or TRP, etc. The access network device may also be a gNB, TRP, or TP in the 5G system, or one or a group of (including multiple antenna panels) antenna panels of the base station in the 5G system. In addition, the access network device may also be a network node that constitutes a gNB or TP, such as a BBU, or a distributed unit (DU).

In some deployments, the gNB may include a centralized unit (CU) and a DU. In addition, the gNB may also include an active antenna unit (AAU). The CU implements some of the functions of the gNB, and the DU implements some of the functions of the gNB. For example, the CU is responsible for processing non-real-time protocols and services, and implements radio resource control (radio resource control, RRC) and packet data convergence protocol (packet data convergence protocol, PDCP) layer functions. The DU is responsible for processing the physical layer protocol and real-time services, and realizes the functions of the radio link control (RLC) layer, the media access control (MAC) layer, and the physical (PHY) layer. AAU realizes some physical layer processing functions, radio frequency processing and related functions of active antennas. Since the information of the RRC layer will eventually become the information of the PHY layer, or be transformed from the information of the PHY layer, under this architecture, high-level signaling, such as RRC layer signaling, can also be considered to be sent by the DU , Or, sent by DU and AAU. It is understandable that the access network device may be a device including one or more of the CU node, the DU node, and the AAU node.

Optionally, the access network device and the terminal device in the embodiment of the present application may communicate through a licensed spectrum, or communicate through an unlicensed spectrum, or communicate through a licensed spectrum and an unlicensed spectrum at the same time. The access network equipment and terminal equipment can communicate through the frequency spectrum below 6 gigahertz (gigahertz, GHz), communicate through the frequency spectrum above 6 GHz, and communicate using the frequency spectrum below 6 GHz and the frequency spectrum above 6 GHz at the same time. . The embodiment of the present application does not limit the spectrum resource used between the access network device and the terminal device 101.

Optionally, the terminal equipment, access network equipment, or positioning management equipment in the embodiments of the present application can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; it can also be deployed on the water; it can also be deployed on an aircraft in the air , Balloons and satellites. The embodiments of the present application do not limit the application scenarios of terminal devices, access network devices, or positioning management devices.

Optionally, in the embodiment of the present application, the terminal device or the access network device or the location management device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also referred to as main memory). The operating system can be any one or more computer operating systems that implement business processing through processes, for example, Linux operating systems, Unix operating systems, Android operating systems, iOS operating systems, or windows operating systems. The application layer includes applications such as browsers, address books, word processing software, and instant messaging software. Moreover, the embodiments of the present application do not specifically limit the specific structure of the execution body of the method provided in the embodiments of the present application, as long as the program that records the code of the method provided in the embodiments of the present application can be provided in accordance with the embodiments of the present application. For example, the execution subject of the method provided in this embodiment of the application may be a terminal device, an access network device, or a positioning management device, or a terminal device, an access network device, or a positioning management device that can be called Program and execute the functional modules of the program.

In other words, the related functions of the terminal device, access network device, or location management device in the embodiments of the present application can be implemented by one device, or by multiple devices, or by one or more functions in one device. Module implementation, which is not specifically limited in the embodiment of this application. It is understandable that the above functions can be network elements in hardware devices, software functions running on dedicated hardware, or a combination of hardware and software, or instantiated on a platform (for example, a cloud platform) Virtualization function.

The method for processing closed access group information provided by the embodiments of the present application will be specifically described below in conjunction with FIG. 1 to FIG. 3.

It should be noted that the name of the message between each network element or the name of each parameter in the message in the following embodiments of the present application is just an example, and other names may also be used in specific implementation, which is not done in the embodiments of the present application. Specific restrictions.

FIG. 4 is a schematic flowchart of a method for processing closed access group information provided by an embodiment of this application. The method may include the following steps:

S101. The closed access group cell sends a first closed access group identifier.

Correspondingly, the terminal device receives the first closed access group identifier sent by the closed access group cell.

The CAG cell is to receive the access of the terminal equipment, and the terminal equipment needs to know the CAG identifiers actually supported by the CAG cell. There may be one or more CAG identifiers actually supported by the CAG cell. Therefore, the CAG cell sends the first CAG identifier, and the first CAG identifier may be the same as or different from the CAG identifier actually supported by the CAG cell. The first CAG identifier may also be one or more. Because when the CAG cell sends the actual CAG identifier that it actually supports, the actual CAG identifier that it actually supports may be tampered with to the first CAG identifier.

In order to reduce transmission overhead, the CAG cell may carry the first CAG identifier through a broadcast message. Specifically, in one implementation, the closed access group cell may send a broadcast message, and the broadcast message includes the first closed access group identifier. Correspondingly, the terminal equipment within the coverage of the CAG cell can receive the broadcast message and obtain the first closed access group identifier carried in the broadcast message.

In FIG. 4, it is shown that the access network device sends the first CAG identifier. In fact, the access network device may include one or more CAG cells, and the CAG cell itself actually sends the first CAG identifier.

S102. The closed access group cell sends a second closed access group identifier to the mobility management network element.

Correspondingly, the mobility management network element receives the second closed access group identifier.

This step is optional. In order for the mobility management network element to accurately determine whether the terminal device can access the CAG cell, the CAG cell sends a second CAG identifier to the mobility management network element, and the second CAG identifier is a CAG identifier actually supported by the CAG cell.

S103: The terminal device sends a registration request message to the mobility management network element through the closed access group cell.

Correspondingly, the mobility management network element receives the registration request message.

The terminal device obtains the first CAG identifier sent by the CAG cell in step S101, and the first CAG identifier may be one or more. The terminal device compares with one or more first CAG identifiers according to the allowed CAG identifier list obtained through the contract. If the CAG identifier list allowed by the terminal device and the first CAG identifier have overlapping CAG identifiers, it indicates that the terminal The device can access the CAG cell. Therefore, the terminal device sends a registration request message to the mobility management network element through the CAG cell to request access to or access to the CAG cell.

For example, the list of CAG identities allowed by the terminal equipment includes CAG identities 1, 2, 3, and 4. The CAG identities actually supported by the CAG cell are CAG identities 5, but the first CAG identities sent by the CAG cell are CAG identities 1, 2 , 5. Therefore, the terminal device determines that they have the same CAG ID 1, 2 according to the allowed CAG IDs 1, 2, 3, 4 and the first CAG IDs 1, 2, and 5. Therefore, the terminal device considers that the CAG cell supports The CAG identifies 1 and 2. Therefore, it is considered that the CAG cell can be accessed, and a registration request message is sent to the mobility management network element to request access to or access to the CAG cell.

S104. The mobility management network element sends a registration rejection message to the terminal device, where the registration rejection message carries the reason value and the second closed access group identifier.

Correspondingly, the terminal device receives the registration rejection message.

Wherein, the cause value indicates that the terminal device is not authorized to access the closed access group or only authorized to access the closed access group cell.

After the mobile management network element receives the registration request message sent by the terminal device, it can know that the terminal device wants to access or visit the CAG cell. Therefore, it obtains the terminal according to the second CAG identifier actually supported by the CAG cell obtained previously. The subscription data of the device. The subscription data includes a list of CAG IDs allowed by the terminal device. By comparing the second CAG ID and the allowed CAG ID list of the terminal device, if the CAG ID list allowed by the terminal device and the second CAG ID are the same Or the overlapped CAG identifier, it is considered that the terminal device can access or visit the CAG cell, and a registration success message is sent to the terminal device. The registration success message is used to indicate that the terminal device is successfully registered.

However, if the CAG ID list and the second CAG ID allowed by the terminal device do not have the same or overlapping CAG ID, it is considered that the terminal device cannot access or visit the CAG cell, and a registration rejection message is sent to the terminal device. The registration rejection message includes the 76# reason value, and also includes the second CAG identifier. The 76# reason value indicates that the terminal device is not authorized to access the closed access group or only authorized to access the closed access group cell (not authorized for this CAG or authorized for CAG cells only), that is, the terminal device is not authorized to access The CAG cell, or only authorized to access the CAG cell (the CAG cell may not be limited to the CAG cell requested for registration, and may be any CAG cell), and cannot access the PLMN.

S105. If the cause value indicates that the terminal device is not authorized to access the closed access group or only authorized to access the closed access group cell, and the first closed access group identifier is consistent with the second closed access group identifier, then The closed access group identifier that overlaps with the first closed access group identifier or the second closed access group identifier is deleted from the list of allowed closed access group identifiers of the terminal device.

After receiving the registration rejection message, the terminal device considers that it cannot access or visit the CAG cell. However, in this embodiment, the terminal device does not directly delete the CAG identifier that coincides with the first CAG identifier from the list of closed access group identifiers allowed by the terminal device, but rather according to the first CAG identifier carried in the registration rejection message by the mobility management network element. Second, the CAG identifier, to determine whether the first CAG identifier is consistent with the second CAG identifier. If the terminal device receives the above cause value, and the first CAG identifier is consistent with the second CAG identifier, it indicates that the terminal device is indeed unable to access or access the CAG cell. Therefore, the terminal device deletes the closed access group identity that overlaps the first closed access group identity or the second closed access group identity from the closed access group identity list allowed by the terminal device.

In this way, it is possible to avoid accidentally deleting the CAG identifier in the list of allowed closed access group identifiers of the terminal device. And by deleting the closed access group ID that overlaps with the first closed access group ID or the second closed access group ID from the list of closed access group IDs allowed by the terminal device, the closed access allowed to the terminal device can be obtained. The group identification list is effectively managed to prevent the terminal device from constantly trying to access the CAG cell.

S105. If the first closed access group identifier is inconsistent with the second closed access group identifier, the terminal device retains a list of allowed closed access group identifiers, or deletes it from the list of allowed closed access group identifiers of the terminal device A closed access group identifier that overlaps with the second closed access group identifier.

This step is optional. If the first CAG identifier is inconsistent with the second CAG identifier, the terminal device does not process its allowed CAG identifier list and retains its allowed CAG identifier list. Alternatively, the terminal device deletes the closed access group identifier that overlaps with the second closed access group identifier from the list of closed access group identifiers allowed by the terminal device according to the second CAG identifier actually supported by the CAG cell carried in the registration rejection message , In order to accurately process the allowed CAG identification list of the terminal device, and avoid accidentally deleting the CAG identification in the allowed CAG identification list of the terminal device.

S106. The terminal device sends first information to the mobility management network element, where the first information is used to indicate that the first closed access group identifier has been tampered with.

Correspondingly, the mobility management network element receives the first information.

This step is optional. If the first CAG identifier is inconsistent with the second CAG identifier, it indicates that the first CAG identifier sent by the CAG cell is incorrect or has been tampered with. The terminal device sends the first information to the mobility management network element to notify the mobility management network element of the first CAG identifier sent by the CAG cell. A CAG logo has been tampered with.

S107. The mobility management network element marks the closed access group cell.

This step is optional. After the mobile management network element receives the first information sent by the terminal device, it marks the CAG cell, so that the mobile management network element can process subsequent registration requests that attempt to access the CAG cell, for example, deny access or access The CAG cell, thereby improving the effectiveness of CAG cell access.

According to a method for processing closed access group information provided by an embodiment of the present application, after a terminal device receives a registration rejection message of a mobility management network element, if the first closed access group identifier is consistent with the second closed access group identifier, Only the closed access group identifiers that overlap with the first closed access group identifier or the second closed access group identifier are deleted from the list of allowed closed access group identifiers of the terminal device, so that the allowed CAG identifier list of the terminal device can be checked. Perform accurate processing to avoid accidentally deleting the CAG logo in the allowed CAG logo of the terminal device.

FIG. 4a is another schematic flowchart of a method for processing closed access group information provided by an embodiment of this application. The method may include the following steps:

S101a. The closed access group cell sends a first closed access group identifier.

In Figure 4a, it is shown that the access network device sends the first CAG identifier. In fact, the access network device may include one or more CAG cells, and the CAG cell itself actually sends the first CAG identifier.

S102a. The closed access group cell sends a second closed access group identifier to the mobility management network element.

S103a: The terminal device sends a registration request message to the mobility management network element;

For example, the terminal device may send a registration request message to the mobility management network element through the closed access group cell.

The terminal device obtains the first CAG identifier sent by the CAG cell in step S101a, and the first CAG identifier may be one or more. The terminal device compares with one or more first CAG identifiers according to the allowed CAG identifier list obtained through the contract. If the CAG identifier list allowed by the terminal device and the first CAG identifier have overlapping CAG identifiers, it indicates that the terminal The device can access the CAG cell. Therefore, the terminal device sends a registration request message to the mobility management network element through the CAG cell to request access to or access to the CAG cell.

S104a. The mobility management network element sends a registration rejection message to the terminal device, where the registration rejection message carries the reason value and the hash value of the second closed access group identifier.

Wherein, the hash value may be obtained by performing a hash operation on the second closed access group by the mobility management network element.

However, if the CAG ID list and the second CAG ID allowed by the terminal device do not have the same or overlapping CAG ID, it is considered that the terminal device cannot access or visit the CAG cell, and a registration rejection message is sent to the terminal device. The registration rejection message includes the 76# reason value, and also includes the hash value of the second CAG identifier. The 76# reason value indicates that the terminal device is not authorized to access the closed access group or only authorized to access the closed access group cell (not authorized for this CAG or authorized for CAG cells only), that is, the terminal device is not authorized to access The CAG cell, or only authorized to access the CAG cell (the CAG cell may not be limited to the CAG cell requested for registration, and may be any CAG cell), and cannot access the PLMN.

S105a. If the cause value indicates that the terminal device is not authorized to access the closed access group or only authorized to access the closed access group cell, and the hash value of the first closed access group identifier is the same as the second closed access If the hash value of the group identifier matches, the closed access group identifier that overlaps with the first closed access group identifier is deleted from the list of allowed closed access group identifiers of the terminal device.

Wherein, the terminal device can calculate the hash value of the first closed access group identifier at any time after the terminal device receives the first closed access group identifier, and it is not limited.

Wherein, the hash value of the first closed access group identifier matches the hash value of the second closed access group identifier, including: the hash value of the first closed access group identifier and the hash value of the second closed access group identifier. Hope that the value is the same or the same.

After receiving the registration rejection message, the terminal device considers that it cannot access or visit the CAG cell. However, in this embodiment, the terminal device does not directly delete the CAG identifier that coincides with the first CAG identifier from the list of closed access group identifiers allowed by the terminal device, but rather according to the first CAG identifier carried in the registration rejection message by the mobility management network element. 2. The hash value of the CAG identifier, to determine whether the hash value of the first CAG identifier is consistent with the hash value of the second CAG identifier. If the terminal device receives the above-mentioned cause value, and the hash value of the first CAG identifier is consistent with the hash value of the second CAG identifier, it indicates that the terminal device is indeed unable to access or access the CAG cell. Therefore, the terminal device deletes the closed access group identifier that overlaps the first closed access group identifier from the list of closed access group identifiers allowed by the terminal device.

In this way, it is possible to avoid accidentally deleting the CAG identifier in the list of allowed closed access group identifiers of the terminal device. And by deleting the closed access group identifier that overlaps with the first closed access group identifier from the list of allowed closed access group identifiers of the terminal device, the list of allowable closed access group identifiers of the terminal device can be effectively managed. In order to avoid the terminal equipment constantly trying to access the CAG cell.

S105a: If the hash value of the first closed access group identifier is inconsistent with the hash value of the second closed access group identifier, the terminal device retains a list of allowed closed access group identifiers.

This step is optional. If the hash value of the first CAG identifier is inconsistent with the hash value of the second CAG identifier, the terminal device does not process its allowed CAG identifier list and retains its allowed CAG identifier list to avoid accidentally deleting the terminal device and being allowed The CAG ID in the list of CAG IDs.

S106a. The terminal device sends first information to the mobility management network element, where the first information is used to indicate that the first closed access group identifier has been tampered with.

This step is optional. If the hash value of the first CAG identifier is inconsistent with the hash value of the second CAG identifier, it indicates that the first CAG identifier sent by the CAG cell is incorrect or has been tampered with, and the terminal device sends the first information to the mobility management network element to notify the mobile The first CAG identifier sent by the CAG cell of the management network element is tampered with.

S107a. The mobility management network element marks the closed access group cell.

According to a method for processing closed access group information provided by an embodiment of the present application, after a terminal device receives a registration rejection message from a mobility management network element, if the hash value of the first closed access group identifier is equal to that of the second closed access group When the hash value of the group ID is consistent, the closed access group ID that overlaps with the first closed access group ID is deleted from the list of allowed closed access group IDs of the terminal device, so that the list of CAG IDs allowed for the terminal device can be checked. Perform accurate processing to avoid accidentally deleting the CAG logo in the allowed CAG logo of the terminal device.

FIG. 5 is another schematic flowchart of a method for processing closed access group information provided by an embodiment of this application. The method may include the following steps:

S201: The closed access group cell sends a first closed access group identifier.

Specifically, in one implementation, the closed access group cell sends a broadcast message, and the broadcast message includes the first closed access group identifier. Correspondingly, the terminal device receives the broadcast message, and obtains the first closed access group identifier carried in the broadcast message.

For the specific implementation of this step, reference may be made to step S101 of the embodiment shown in FIG. 4, which will not be repeated here.

S202: The closed access group cell sends a second closed access group identifier to the mobility management network element.

This step is optional. For the specific implementation of this step, reference may be made to step S102 of the embodiment shown in FIG. 4, which will not be repeated here.

S203. The terminal device sends a registration request message to the mobility management network element through the closed access group cell.

Correspondingly, the mobility management network element receives the registration request message. For the specific implementation of this step, reference may be made to step S103 of the embodiment shown in FIG. 4, which will not be repeated here.

S204: The mobility management network element sends an updated closed access group identification list allowed by the terminal device to the terminal device.

Correspondingly, the terminal device receives the updated closed access group identification list allowed by the terminal device.

The difference from the embodiment shown in FIG. 4 is that after the mobility management network element obtains the second CAG identifier actually supported by the CAG cell and the subscription data of the terminal device, the subscription data includes the CAG identifier allowed by the terminal device. If it is determined that the CAG identifier list allowed by the terminal device and the second CAG identifier do not have the same or overlapping CAG identifiers, the updated CAG identifier list allowed by the terminal device is obtained. Obtaining the updated list of allowed CAG identities of the terminal device may specifically be that the mobility management network element interacts with other network elements (for example, a subscription server) to obtain the updated list of allowed CAG identities of the terminal device.

The mobile management network element sends an updated list of CAG identifiers allowed by the terminal device to the terminal device, which may be implemented in multiple ways. Specifically, in an implementation, S204 specifically includes:

The mobile management network element sends a configuration update message to the terminal device, where the configuration update message includes the updated closed access group identification list allowed by the terminal device.

Correspondingly, the terminal device receives the configuration update message, and obtains the closed access group identification list allowed by the updated terminal device.

That is, the mobility management network element can send a special configuration update message to notify the terminal device of the updated CAG identifier list of the terminal device.

Further, the mobility management network element may also send a registration rejection message to the terminal device. The registration rejection message includes the reason value. The cause value indicates that the terminal device is not authorized to access the closed access group or only authorized to access the closed access group cell. The mobility management network element sends an updated list of CAG identifiers allowed by the terminal device to the terminal device, but the current terminal device cannot access or access the CAG cell, and therefore, sends a registration rejection message to the terminal device.

After receiving the registration rejection message, the terminal device disconnects the access network device corresponding to the CAG cell. And it can try to access the CAG cell in other access network equipment according to the updated CAG identifier list allowed by the terminal equipment.

In another implementation, S204 specifically includes:

The mobile management network element sends a registration rejection message to the terminal device. The registration rejection message includes the reason value and the updated closed access group identification list allowed by the terminal device. The reason value indicates that the terminal device is not authorized to access the closed access group. Or only authorize access to closed access group cells.

Correspondingly, the terminal device receives the registration rejection message, and obtains the updated closed access group identification list allowed by the terminal device.

In this implementation, the mobility management network element does not need to send a special message to notify the terminal device of the updated CAG identifier list of the terminal device. The registration rejection message can carry the updated CAG identifier list of the terminal device to save Transmission signaling.

S205. The updated closed access group identifier list allowed by the terminal equipment and the first closed access group identifier have closed access group identifiers that overlap with the first closed access group identifier, and the terminal equipment disconnects from the closed access group cell.

After obtaining the updated CAG identifier list allowed by the terminal device, the terminal device compares the updated CAG identifier list allowed by the terminal device with the first CAG identifier sent by the CAG cell to see if there is an overlapped CAG identifier. If the updated CAG identifier list of the terminal equipment is allowed to overlap with the first CAG identifier sent by the CAG cell, but the terminal equipment has learned that it cannot access the CAG cell, it indicates that the first CAG identifier sent by the CAG cell is incorrect or Is tampered with, therefore, the terminal device disconnects from the CAG cell.

Further, the terminal device can try to access the CAG cell in other access network devices according to the updated CAG identifier list allowed by the terminal device.

S206. The terminal device sends first information to the mobility management network element through the closed access group cell, where the first information is used to indicate that the first closed access group identifier has been tampered with.

For the specific implementation of this step, refer to step S106' of the embodiment shown in FIG. 4, which will not be repeated here.

S207. The mobility management network element marks the closed access group cell.

For the specific implementation of this step, refer to step S107' of the embodiment shown in FIG. 4, which will not be repeated here.

According to a method for processing closed access group information provided by an embodiment of the present application, when a terminal device obtains an updated closed access group identification list that is allowed by the terminal device sent by a mobility management network element, if it is connected with the first closed access group identification list If there is a CAG identity that overlaps the group identity, the closed access group cell is not accessed, so as to improve the reliability of communication.

FIG. 6 is another schematic flowchart of a method for processing closed access group information provided by an embodiment of this application. The method may include the following steps:

S301. The closed access group cell sends a first closed access group identifier.

For the specific implementation of this step, refer to step S101 of the embodiment shown in FIG. 4, or refer to step S201 of the embodiment shown in FIG. 5, which will not be repeated here.

S302. The closed access group cell sends a second closed access group identifier to the mobility management network element.

This step is optional. For the specific implementation of this step, refer to step S102 of the embodiment shown in FIG. 4, or refer to step S202 of the embodiment shown in FIG. 5, which will not be repeated here.

S303. The terminal device sends a registration request message to the mobility management network element through the closed access group cell.

For the specific implementation of this step, refer to step S103 of the embodiment shown in FIG. 4, or refer to step S203 of the embodiment shown in FIG. 5, which will not be repeated here.

The difference from the embodiment shown in FIG. 4 or FIG. 5 is that in this embodiment, the registration request message includes the above-mentioned first closed access group identifier. That is, the terminal device requests to access or visit the CAG cell because its allowed CAG identifier list and the first CAG identifier overlap with the CAG identifier.

S304. The mobility management network element determines that the first closed access group identifier is incorrect.

After receiving the registration request message sent by the terminal device, the mobility management network element learns the CAG cell that the terminal device intends to access or visit, and obtains the first CAG identifier carried in the registration request message.

The mobility management network element obtains the subscription data of the terminal device, where the subscription data includes a list of CAG identifiers allowed by the terminal device, and determines that the first CAG identifier is wrong.

Specifically, the mobility management network element determines that the first closed access group identifier is inconsistent with the second closed access group identifier supported by the closed access group cell, and determines that the first closed access group identifier is wrong.

S305. The mobility management network element sends a registration rejection message to the terminal device.

The mobility management network element judges that the first closed access group ID is inconsistent with the second closed access group ID supported by the closed access group cell, and the list of allowed CAG IDs of the terminal device does not have the same or overlapped CAG ID with the second CAG ID. ID, the mobility management network element determines that the terminal device cannot access or access the CAG cell, and therefore, sends a registration rejection message to the terminal device. Wherein, the registration rejection message includes the reason value, and the registration rejection message is also used to indicate that the first closed access group identifier is incorrect.

That is, the terminal device carries the first CAG identifier in the registration request message, and the mobility management network element instructs the terminal device that the first CAG identifier is incorrect.

S306. If the cause value indicates that the terminal device is not authorized to access the closed access group or only authorized to access the closed access group cell, the first closed access group identifier is reserved in the list of allowed closed access group identifiers of the terminal device The overlapped closed access group ID.

After receiving the registration rejection message sent by the mobility management network element, the terminal device learns that the terminal device cannot access the CAG cell.

In addition, the mobility management network element also indicates to the terminal device that the first CAG identifier is incorrect through a registration rejection message, and the first CAG identifier is not a CAG identifier actually supported by the CAG cell. Therefore, the terminal device cannot delete the CAG identifier that coincides with the first CAG identifier from the CAG identifier list allowed by the terminal device, so as to avoid accidentally deleting the CAG identifier in the CAG identifier list allowed by the terminal device. That is, the terminal device retains the CAG identifier that coincides with the first CAG identifier in the list of CAG identifiers allowed by the terminal device.

According to a method for processing closed access group information provided by an embodiment of the present application, the terminal device keeps the first CAG identifier to coincide with the first CAG identifier in the allowed CAG identifier list of the terminal device according to the error of the first CAG identifier indicated by the mobility management network element The CAG identification of the CAG is used to accurately process the allowed CAG identification list to avoid accidental deletion of the CAG identification in the allowed CAG identification.

It can be understood that, in the above embodiments, the methods and/or steps implemented by the terminal device can also be implemented by components (such as chips or circuits) that can be used in the terminal device; the methods and/or steps implemented by the mobile management network element The steps can also be implemented by components (such as chips or circuits) that can be used for mobile management network elements.

The foregoing mainly introduces the solutions provided by the embodiments of the present application from the perspective of interaction between various network elements. Correspondingly, an embodiment of the present application also provides a device, which is used to implement the above-mentioned various methods. The device may be the terminal device in the foregoing method embodiment, or a device including the foregoing terminal device, or a component that can be used in a terminal device; or, the device may be the mobility management network element in the foregoing method embodiment, or may include the foregoing A device for mobile management of network elements, or a component that can be used for mobile management of network elements. It can be understood that, in order to realize the above-mentioned functions, the device includes hardware structures and/or software modules corresponding to each function. Those skilled in the art should easily realize that in combination with the units and algorithm steps of the examples described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

The embodiments of the present application may divide the device into functional modules according to the foregoing method embodiments. For example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The above-mentioned integrated modules can be implemented in the form of hardware or software function modules. It should be noted that the division of modules in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.

The related functions of the terminal equipment and the mobility management network element in the embodiment of the present application may be implemented by the communication device 100 in FIG. 7. FIG. 7 is a schematic structural diagram of a communication device 100 provided by an embodiment of the application. The communication device 100 includes one or more processors 11, a communication line 12, and at least one communication interface (in FIG. 7 it is only an example that includes a communication interface 14 and a processor 11 as an example), optional The memory 13 may also be included.

The processor 11 may be a CPU, a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the present application.

The communication line 12 may include a path for connecting between different components.

The communication interface 14 may be a transceiver module for communicating with other devices or communication networks, such as Ethernet, RAN, wireless local area networks (WLAN), and so on. For example, the transceiver module may be a device such as a transceiver or a transceiver. Optionally, the communication interface 14 may also be a transceiver circuit located in the processor 11 to implement signal input and signal output of the processor.

The memory 13 may be a device having a storage function. For example, it can be read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM), or other types that can store information and instructions Dynamic storage devices can also be electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM), or other optical disk storage, optical disc storage ( Including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program codes in the form of instructions or data structures and can be stored by a computer Any other media taken, but not limited to this. The memory can exist independently and is connected to the processor through the communication line 12. The memory can also be integrated with the processor.

The memory 13 is used to store computer-executed instructions for executing the solution of the present application, and the processor 11 controls the execution. The processor 11 is configured to execute computer-executable instructions stored in the memory 13, so as to implement the closed access group information processing method provided in the embodiment of the present application.

Alternatively, in the embodiment of the present application, the processor 11 may also perform processing-related functions in the closed access group information processing method provided in the following embodiments of the present application. The communication interface 14 is responsible for communicating with other devices or communication networks. The application embodiment does not specifically limit this.

The computer execution instructions in the embodiments of the present application may also be referred to as application program codes, which are not specifically limited in the embodiments of the present application.

In a specific implementation, as an embodiment, the processor 11 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 7.

In a specific implementation, as an embodiment, the communication device 100 may include multiple processors, such as the processor 11 and the processor 17 in FIG. 7. Each of these processors can be a single-CPU (single-CPU) processor or a multi-core (multi-CPU) processor. The processor here may refer to one or more devices, circuits, and/or processing cores for processing data (for example, computer program instructions).

In a specific implementation, as an embodiment, the communication apparatus 100 may further include an output device 15 and an input device 16. The output device 15 communicates with the processor 11 and can display information in a variety of ways.

The aforementioned communication device 100 may be a general-purpose device or a dedicated device. For example, the communication device 100 may be a desktop computer, a portable computer, a network server, a personal digital assistant (PDA), a mobile phone, a tablet computer, a wireless terminal device, an embedded device, or a device with a similar structure in FIG. 7. The embodiment of the present application does not limit the type of the communication device 100.

FIG. 8 shows a schematic structural diagram of another terminal device 200. The terminal device 200 includes a transceiver unit 21 and a processing unit 22. The transceiver unit 21, which may also be called a transceiver module, is used to implement a transceiver function, and may be, for example, a transceiver circuit, a transceiver, a transceiver, or a communication interface.

The transceiver unit 21 is configured to receive the first closed access group identifier sent by the closed access group cell;

The transceiver unit 21 is further configured to send a registration request message to the mobility management network element through the closed access group cell;

The transceiver unit 21 is further configured to receive a registration rejection message sent by the mobility management network element, where the registration rejection message carries a reason value and a second closed access group identifier;

The processing unit 22 is configured to, if the cause value indicates that the terminal is not authorized to access the closed access group or only authorized to access the closed access group cell, and the first closed access group identifier is the same as the If the second closed access group ID is consistent, the closed access group that overlaps with the first closed access group ID or the second closed access group ID is deleted from the list of allowed closed access group IDs of the terminal device Logo.

In one implementation, the transceiver unit 21 is configured to receive a broadcast message sent by the closed access group cell, where the broadcast message includes the first closed access group identifier.

In one implementation, the processing unit 22 is further configured to reserve the allowed closed access in the terminal if the first closed access group identifier is inconsistent with the second closed access group identifier. The group identification list, or the closed access group identification that overlaps with the second closed access group identification is deleted from the allowed closed access group identification list of the terminal device.

In one implementation, the transceiving unit 21 is further configured to send first information to the mobility management network element if the first closed access group identifier is inconsistent with the second closed access group identifier, so The first information is used to indicate that the first closed access group identifier has been tampered with.

For the specific implementation of the foregoing transceiver unit 21 and processing unit 22, reference may be made to the description of the terminal device in the embodiment shown in FIG. 4.

According to a terminal device provided by an embodiment of the present application, after the terminal device receives the registration rejection message of the mobility management network element, if the first closed access group identifier is consistent with the second closed access group identifier, the terminal device will be removed from the terminal device. In the list of allowed closed access group IDs, the closed access group IDs that overlap with the first closed access group ID or the second closed access group ID are deleted, so that the list of allowed CAG IDs for terminal devices can be processed accurately and avoid The CAG mark in the allowed CAG mark of the terminal device is deleted by mistake.

FIG. 9 shows a schematic structural diagram of another terminal device 300. The terminal device 300 includes a transceiver unit 31 and a processing unit 32. The transceiver unit 31, which may also be called a transceiver module, is used to implement a transceiver function, for example, it may be a transceiver circuit, a transceiver, a transceiver, or a communication interface.

The transceiver unit 31 is configured to receive the first closed access group identifier sent by the closed access group cell;

The transceiving unit 31 is further configured to send a registration request message to the mobility management network element through the closed access group cell;

The transceiving unit 31 is further configured to receive an updated closed access group identification list allowed for terminal equipment; and

The processing unit 32 is configured to: the updated closed access group identification list of the terminal equipment and the first closed access group identification overlap with the closed access group identification, and disconnect the closed access group cell from the closed access group. Connection.

In one implementation, the transceiving unit 31 is configured to perform any one of the following operations: receiving a configuration update message, the configuration update message including a closed access group identification list allowed by the updated terminal device; or, receiving A registration rejection message, the registration rejection message includes a reason value and the updated closed access group identification list allowed by the terminal device, and the reason value indicates that the terminal device is not authorized to access the closed access group or is only authorized Access the closed access group cell.

In one implementation, the transceiving unit 31 is also used for the updated closed access group identification list allowed by the terminal equipment and the closed access group identification that overlaps with the first closed access group identification. The closed access group cell sends first information to the mobility management network element, where the first information is used to indicate that the first closed access group identifier has been tampered with.

In one implementation, the transceiver unit 31 is configured to receive a broadcast message sent by the closed access group cell, where the broadcast message includes the first closed access group identifier.

For the specific implementation of the foregoing transceiver unit 31 and processing unit 32, reference may be made to the description of the terminal device in the embodiment shown in FIG. 5.

According to a terminal device provided by an embodiment of the present application, when the terminal device obtains the updated closed access group identification list that is allowed by the terminal device sent by the mobility management network element, if it overlaps with the first closed access group identification If the CAG is identified, the closed access group cell is not accessed, so as to improve the reliability of communication.

FIG. 10 shows a schematic structural diagram of another terminal device 400. The terminal device 400 includes a transceiver unit 41 and a processing unit 42. The transceiver unit 41, which may also be called a transceiver module, is used to implement a transceiver function, and may be, for example, a transceiver circuit, a transceiver, a transceiver, or a communication interface.

The transceiver unit 41 is configured to receive the first closed access group identifier sent by the closed access group cell;

The transceiver unit 41 is further configured to send a registration request message to a mobility management network element through the closed access group cell, where the registration request message includes the first closed access group identifier;

The transceiving unit 41 is further configured to receive a registration rejection message sent by a mobility management network element, the registration rejection message includes a reason value, and the registration rejection message is also used to indicate that the first closed access group identifier is wrong; as well as

The processing unit 42 is configured to, if the cause value indicates that the terminal device is not authorized to access the closed access group or only authorized to access the closed access group cell, keep it in the list of closed access group identifiers allowed by the terminal device A closed access group identifier that overlaps with the first closed access group identifier.

In one implementation, the transceiver unit 41 is configured to receive a broadcast message sent by the closed access group cell, where the broadcast message includes the first closed access group identifier.

In one implementation, the error of the first closed access group identifier includes: the first closed access group identifier is inconsistent with the second closed access group identifier supported by the closed access group cell.

For the specific implementation of the foregoing transceiver unit 41 and processing unit 42, reference may be made to the related description of the terminal device in the embodiment shown in FIG. 6.

According to a terminal device provided by an embodiment of the present application, the terminal device retains the CAG identifier that coincides with the first CAG identifier in the CAG identifier list allowed by the terminal device according to the error of the first CAG identifier indicated by the mobility management network element, to Accurately process the list of allowed CAG marks to avoid accidentally deleting the CAG marks in the allowed CAG marks.

FIG. 11 shows a schematic structural diagram of yet another mobility management network element 500. The mobility management network element 500 includes a transceiver unit 51 and a processing unit 52. The transceiver unit 51, which may also be referred to as a transceiver module, is used to implement a transceiver function, and may be, for example, a transceiver circuit, a transceiver, a transceiver, or a communication interface.

The transceiver unit 51 is configured to receive a registration request message sent by a terminal device through a closed access group cell;

The transceiver unit 51 is further configured to send a registration rejection message to the terminal device, the registration rejection message carrying a reason value and a second closed access group identifier, and the reason value indicates that the terminal device is not authorized to access Closed access group or only authorized to access closed access group cells.

In an implementation, the transceiver unit 51 is further configured to receive the second closed access group identifier sent by the closed access group cell.

In one implementation, the transceiving unit 51 is further configured to receive first information sent by the terminal device through the closed access group cell, where the first information is used to indicate the first closed access group identifier Tampered with

In one implementation, the processing unit 52 is configured to mark the closed access group cell.

For the specific implementation of the foregoing transceiver unit 51 and processing unit 52, reference may be made to the description of the mobility management network element in the embodiment shown in FIG. 4.

According to a mobility management network element provided by an embodiment of the present application, by sending a registration rejection message to a terminal device, after the terminal device receives the registration rejection message of the mobility management network element, if the first closed access group identifier and the second closed access group identifier are Only when the access group IDs are consistent, the closed access group IDs that overlap with the first closed access group ID or the second closed access group ID can be deleted from the list of allowed closed access group IDs of the terminal device, so that the terminal device can be The allowed CAG identification list is processed accurately to avoid accidentally deleting the CAG identification in the allowed CAG identification of the terminal device.

FIG. 12 shows a schematic structural diagram of yet another mobility management network element 600. The mobility management network element 600 includes a transceiver unit 61 and a processing unit 62. The transceiver unit 61, which may also be called a transceiver module, is used to implement the transceiver function, and may be, for example, a transceiver circuit, transceiver, transceiver, or communication interface.

The transceiver unit 61 is configured to receive a registration request message sent by a terminal device through a closed access group cell;

The processing unit 62 is used for the terminal device is not authorized to access the closed access group or only authorized to access the closed access group cell, and configured to update the closed access group identification list allowed by the terminal device; and

The transceiving unit 61 is further configured to send an updated closed access group identification list allowed by the terminal device to the terminal device.

In one implementation, the transceiver unit 61 is configured to receive the second closed access group identifier sent by the closed access group cell.

In one implementation, the transceiver unit 61 is configured to perform any of the following operations: send a configuration update message to the terminal device, the configuration update message including the closed access group identifier that the updated terminal device is allowed to List; or, sending a registration rejection message to the terminal device, the registration rejection message including a reason value and the updated closed access group identification list allowed by the terminal device, the reason value indicating that the terminal device is not Authorize access to the closed access group or only authorized access to the closed access group cell.

In one implementation, the transceiving unit 61 is configured to receive first information sent by the terminal device through the closed access group cell, and the first information is used to indicate that the first closed access group identifier is Tampering; and

In an implementation, the processing unit 62 is configured to mark the closed access group cell.

For the specific implementation of the foregoing transceiver unit 61 and processing unit 62, reference may be made to the related description of the mobility management network element in the embodiment shown in FIG. 5.

According to a mobility management network element provided by an embodiment of the present application, the mobility management network element sends an updated closed access group identification list allowed by the terminal device to the terminal device, and the terminal device obtains the updated information sent by the mobility management network element. In the list of allowed closed access group identifiers of the terminal device, if there is a CAG identifier that overlaps with the first closed access group identifier, it will not access the closed access group cell, so as to improve the reliability of communication.

FIG. 13 shows a schematic structural diagram of yet another mobility management network element 700. The mobility management network element 700 includes a transceiver unit 71 and a processing unit 72. The transceiver unit 71, which may also be referred to as a transceiver module, is used to implement a transceiver function, and may be, for example, a transceiver circuit, a transceiver, a transceiver, or a communication interface.

The transceiving unit 71 is configured to receive a registration request message sent by a terminal device through a closed access group cell, where the registration request message includes the first closed access group identifier;

The processing unit 72 is configured to determine that the first closed access group identifier is incorrect; and

The transceiving unit 71 is further configured to send a registration rejection message to the terminal device, the registration rejection message includes a reason value, and the registration rejection message is also used to indicate that the first closed access group identifier is incorrect.

In one implementation, the transceiver unit 71 is configured to receive the second closed access group identifier sent by the closed access group cell.

In one implementation, the processing unit 72 is configured to determine that the first closed access group identifier is inconsistent with the second closed access group identifier, and determine that the first closed access group identifier is incorrect.

For the specific implementation of the foregoing transceiver unit 71 and processing unit 72, reference may be made to the related description of the mobility management network element in the embodiment shown in FIG. 6.

According to a mobility management network element provided by an embodiment of the present application, the mobility management network element indicates an error in the first CAG identifier to the terminal device, so that the terminal device is wrong according to the first CAG identifier indicated by the mobility management network element. The CAG identifiers that overlap with the first CAG identifiers are retained in the allowed CAG identifier list to accurately process the allowed CAG identifier lists to avoid accidentally deleting the CAG identifiers in the allowed CAG identifiers.

Optionally, an embodiment of the present application further provides a chip system, including: at least one processor and an interface, the at least one processor is coupled to the memory through the interface, and when the at least one processor executes a computer program or instruction in the memory At this time, the method in any of the foregoing method embodiments is executed. Optionally, the chip system may be composed of chips, or may include chips and other discrete devices, which are not specifically limited in the embodiment of the present application.

It should be understood that, in the description of this application, unless otherwise specified, "/" means that the associated objects before and after are in an "or" relationship, for example, A/B can mean A or B; where A and B can be singular Or plural. Also, in the description of this application, unless otherwise specified, "plurality" means two or more than two. "The following at least one item (a)" or similar expressions refers to any combination of these items, including any combination of a single item (a) or a plurality of items (a). For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple . In addition, 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, words such as "first" and "second" are used to distinguish the same or similar items with substantially the same function and effect. Those skilled in the art can understand that words such as "first" and "second" do not limit the quantity and order of execution, and words such as "first" and "second" do not limit the difference. Meanwhile, in the embodiments of the present application, words such as "exemplary" or "for example" are used as examples, illustrations, or illustrations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present application should not be construed as being more preferable or advantageous than other embodiments or design solutions. To be precise, words such as "exemplary" or "for example" are used to present related concepts in a specific manner to facilitate understanding.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using a software program, it can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may 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 may be transmitted from a website, computer, server, or data center. Transmission to another website, computer, server, or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or includes one or more data storage devices such as servers, data centers, etc. that can be integrated with the medium. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a digital versatile disc (DVD)), or a semiconductor medium (for example, a solid state disk (SSD)) Wait.

Although this application has been described in conjunction with various embodiments, in the process of implementing the claimed application, those skilled in the art can understand and understand by viewing the drawings, the disclosure, and the appended claims in the process of implementing the claimed application. Implement other changes of the disclosed embodiment. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "one" does not exclude a plurality. A single processor or other unit may implement several functions listed in the claims. Certain measures are described in mutually different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

Although the application has been described in combination with specific features and embodiments, it is obvious that various modifications and combinations can be made without departing from the spirit and scope of the application. Accordingly, the specification and drawings are merely exemplary descriptions of the application as defined by the appended claims, and are deemed to cover any and all modifications, changes, combinations or equivalents within the scope of the application. Obviously, those skilled in the art can make various changes and modifications to the application without departing from the spirit and scope of the application. In this way, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, then this application is also intended to include these modifications and variations.

Claims

A method for processing closed access group information, characterized in that the method includes:

Receiving the first closed access group identifier sent by the closed access group cell;

Sending a registration request message to the mobility management network element through the closed access group cell;

Receiving a registration rejection message sent by the mobility management network element, where the registration rejection message carries a reason value and a second closed access group identifier;

If the cause value indicates that the terminal device is not authorized to access the closed access group or only authorized to access the closed access group cell, and the first closed access group identifier and the second closed access If the group identifiers are consistent, the closed access group identifiers that overlap with the first closed access group identifier or the second closed access group identifier are deleted from the list of allowed closed access group identifiers of the terminal device.
The method according to claim 1, wherein the receiving the first closed access group identifier sent by the closed access group cell comprises:

Receiving a broadcast message sent by the closed access group cell, where the broadcast message includes the first closed access group identifier.
The method according to claim 1 or 2, wherein the method further comprises:

If the first closed access group identification is inconsistent with the second closed access group identification, the list of allowed closed access group identifications is retained in the terminal device, or the list of allowed closed access group identifications is allowed from the terminal device The closed access group identifier that overlaps with the second closed access group identifier is deleted from the closed access group identifier list.
The method according to claim 3, wherein the method further comprises:

If the first closed access group identifier is inconsistent with the second closed access group identifier, send first information to the mobility management network element, where the first information is used to indicate the first closed access The group ID has been tampered with.
A method for processing closed access group information, characterized in that the method includes:

Receiving a registration request message sent by a terminal device through a closed access group cell;

Sending a registration rejection message to the terminal device, the registration rejection message carrying a reason value and a second closed access group identifier, and the reason value indicates that the terminal device is not authorized to access the closed access group or only authorized to access Closed access group cell.
The method according to claim 5, wherein the method further comprises:

Receiving the second closed access group identifier sent by the closed access group cell.
The method according to claim 5 or 6, wherein the method further comprises:

Receiving first information sent by the terminal device through the closed access group cell, where the first information is used to indicate that the first closed access group identifier has been tampered with;

Mark the closed access group cell.
A terminal device, characterized in that it comprises:

The transceiver unit is configured to receive the first closed access group identifier sent by the closed access group cell;

The transceiving unit is further configured to send a registration request message to the mobility management network element through the closed access group cell;

The transceiver unit is further configured to receive a registration rejection message sent by the mobility management network element, where the registration rejection message carries a reason value and a second closed access group identifier;

A processing unit, configured to: if the cause value indicates that the terminal is not authorized to access the closed access group or only authorized to access the closed access group cell, and the first closed access group identifier and the first closed access group identifier If the two closed access group IDs are consistent, the closed access group ID that overlaps with the first closed access group ID or the second closed access group ID is deleted from the list of allowed closed access group IDs of the terminal device .
The terminal device according to claim 8, wherein the transceiver unit is configured to receive a broadcast message sent by the closed access group cell, and the broadcast message includes the first closed access group identifier.
The terminal device according to claim 8 or 9, wherein the processing unit is further configured to: if the first closed access group identifier is inconsistent with the second closed access group identifier, The terminal retains the allowed closed access group identification list, or deletes the closed access group identification that overlaps the second closed access group identification from the allowed closed access group identification list of the terminal device.
The terminal device according to claim 10, wherein the transceiving unit is further configured to: if the first closed access group identifier is inconsistent with the second closed access group identifier, report to the mobility management The network element sends first information, where the first information is used to indicate that the first closed access group identifier has been tampered with.
A mobile management network element, which is characterized in that it includes:

The transceiver unit is configured to receive a registration request message sent by a terminal device through a closed access group cell;

The transceiver unit is further configured to send a registration rejection message to the terminal device, the registration rejection message carrying a reason value and a second closed access group identifier, and the reason value indicates that the terminal device is not authorized to access the closed access group. Access group or only authorized access to closed access group cells.
The mobility management network element according to claim 12, wherein the transceiver unit is further configured to receive the second closed access group identifier sent by the closed access group cell.
The mobility management network element according to claim 12 or 13, wherein the transceiver unit is further configured to receive first information sent by the terminal device through the closed access group cell, and the first information Used to indicate that the first closed access group identifier has been tampered with;

The mobile management network element further includes:

The processing unit is configured to mark the closed access group cell.
A terminal device, characterized in that it includes a processor, a memory, and a computer program stored on the memory and capable of running on the processor. When the computer program is run, the terminal device is made to execute The method of any one of claims 1 to 4.
A mobility management network element, characterized in that it comprises a processor, a memory, and a computer program stored on the memory and capable of running on the processor. When the computer program is run, the mobility management The network element executes the method according to any one of claims 5-7.