CN114982311B - Data closing method, device, equipment and storage medium - Google Patents

Abstract

The application provides a data closing method, a device, equipment and a storage medium, and relates to the technical field of communication. The method comprises the following steps: transmitting a first message to a first network element, the first message comprising: first indication information. Since the first indication information is used for indicating the non-3GPP data of the terminal to be closed, the data closing function in the non-3GPP can be realized through the carried first indication information.

Description

Data closing method, device, equipment and storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method, an apparatus, a device, and a storage medium for closing data.

Background

The fifth generation (5rd generation,5G) network architecture supports not only terminal access to public land mobile network (Public Land Mobile Network, PLMN) over 3GPP access technologies, but also terminal access to PLMN over non-3GPP (non-3 GPP) access technologies. Currently, PLMNs allow terminals to access through both 3GPP access technologies and non-3GPP access technologies, and terminals may establish protocol data unit (protocol data unit, PDU) sessions based on the 3GPP access network and the non-3GPP access network, respectively.

When the 3GPP accesses the network, the network configures the exemption service for the terminal, and the data transmission of the exemption service is not affected under the condition of closing the flow. In addition, when the user wants to turn off the data traffic, the terminal initiates a PDU session modification (PDU session modification) procedure to the network for each PDU session, updating the data off state to the network. After the network receives the data closing setting of the terminal, the network does not transmit the data any more and does not charge the data.

How to perform data (or data traffic) closure when accessing the network through non-3 GPP access technologies, no related solution is currently given.

Disclosure of Invention

The embodiment of the application provides a data closing method, a device, equipment and a storage medium, which can close data in a non-3 GPP access technology and save user cost. The technical scheme is as follows:

in one aspect, a data closing method is provided and applied to a terminal, and the method includes:

transmitting a first message to a first network element, the first message comprising: and the first indication information is used for indicating the non-3 GPP data of the terminal to be closed.

In another aspect, a data closing method is provided, applied to a first network element, and the method includes:

receiving a first message from a terminal, wherein the first message comprises a data closing indication of non-3 GPP access;

and notifying a third network element that the non-3 GPP data of the terminal is closed.

In another aspect, a data closing apparatus is provided, configured in a terminal, the apparatus including:

a sending module, configured to send a first message to a first network element, where the first message includes: and the first indication information is used for indicating the non-3 GPP data of the terminal to be closed.

In another aspect, a data closing apparatus is provided, configured in a first network element, where the apparatus includes:

a receiving module, configured to receive a first message from a terminal, where the first message includes a data close indication of a non-3 GPP access;

and the sending module is used for notifying a third network element that the non-3 GPP data of the terminal is closed.

In another aspect, a terminal is provided, the terminal comprising a processor and a memory storing at least one instruction for execution by the processor to implement the method of any of the aspects described above for execution by the terminal.

In another aspect, a first network element is provided, the first network element comprising a processor and a memory, the memory storing at least one instruction for execution by the processor to implement the method of any of the aspects described above as being performed by the first network element.

In another aspect, a computer readable storage medium having instructions stored thereon which when executed by a processor implement the method performed by the terminal of the above aspect, or the method performed by the first network element, is provided.

In another aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method performed by the terminal or the method performed by the first network element as described in the above aspects.

The technical scheme provided by the embodiment of the application has the beneficial effects that at least:

the terminal may send a first message to the first network element, the first message comprising: first indication information. Since the first indication information is used for indicating the non-3 GPP data of the terminal to be closed, the data closing function in the non-3 GPP can be realized through the carried first indication information.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the architecture of a communication system provided by an exemplary embodiment of the present application;

fig. 2 is a block diagram of a 5G communication system provided by an exemplary embodiment of the present application;

FIG. 3 is a flow chart of a data shutdown method provided by an exemplary embodiment of the present application;

FIG. 4 is a flow chart of a data shutdown method provided by another exemplary embodiment of the present application;

FIG. 5 is a flow chart of a registration method provided by an exemplary embodiment of the present application;

FIG. 6 is a flow chart of a data shutdown method provided by another exemplary embodiment of the present application;

FIG. 7 is a schematic diagram of a data closing device according to another exemplary embodiment of the present application;

FIG. 8 is a schematic diagram of a data closing device according to another exemplary embodiment of the present application;

fig. 9 is a schematic structural diagram of a communication device according to an exemplary embodiment of the present application.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.

Before describing the data closing method provided by the embodiment of the present application in detail, related terms and implementation environments related to the embodiment of the present application will be briefly described.

First, a 5G core network architecture according to the present application will be explained.

The 5G (5 th Generation Wireless Systems, fifth generation mobile communication technology) core network architecture emphasizes the separation of the control plane and the user plane, including independent scaling of both capacities. For example, if more control plane capacity is needed, the control planes may be expanded separately without simultaneously expanding the user plane. Second, the 5G core network architecture uses a service-based identification approach, where services and functions are the focus of attention. The 5G core Network architecture mainly comprises NF (Network Function), and is deployed according to actual needs by adopting a distributed Function. The addition and withdrawal of new network functions does not affect the overall network functionality.

Fig. 1 is a schematic architecture diagram of a communication system according to an exemplary embodiment of the present application. As shown in fig. 1, the communication system includes user plane functions, control plane functions, and other types of functions.

The user plane functions include: UPF (User Plane Function ), which is a gateway between the RAN and external networks such as the internet, is responsible for handling data packet grab routing and forwarding, data packet detection, quality of service processing and data packet filtering, traffic measurements, etc. It may also serve as an anchor for inter-RAT (Radio Access Technology ) mobility when needed.

The control plane functions include: the SMF (Session Management Function ) handles IP-based allocation of terminals (also referred to as User equipments, UEs), policy-implemented control, general session management functions, and the like. The AMF (Access and Mobility Management Function ) is responsible for control signaling between the core network and the terminal, security of user data, idle state mobility and authorization. The functions that run between the core network (more specifically AMF) and the terminal are sometimes called NAS (Non-Access Stratum) to distinguish them from AS (Access Stratum), which handles the functions between the terminal and the Non-Access network.

In addition, the core network of the communication system may also handle other types of functions, such as PCF (Policy Control Function ) responsible for policy rules, UDM (Unified Data Management ) responsible for authentication and access authorization, NEF (Network Exposure Function, network capability open function), NRF (NR Repository Function, NR storage function), AUSF (Authentication Senver Function, authentication server function) handling authentication functions, and AF (Application Function ).

The specific implementation of the core network functionality may be varied. For example, all functions may be implemented in a single physical node, may be distributed across multiple nodes, or may run on a cloud platform.

The 5G core network architecture supports not only terminal access to PLMN (Public Land Mobile Network ) through 3GPP access, but also terminal access to PLMN through non-3GPP (non-3 GPP) access technology. The 3GPP access technology can be RAN (Radio Access Network ) radio access technology in a 5G system or other 3GPP access technologies in the future; the non-3GPP access technology may be Wi-Fi (Wireless Fidelity ) access technology, wiMAX (Worldwide interoperability for Microwave Access ) technology, CDMA (Code Division Multiple Access, code division multiple access) access technology, or other non-3GPP access technologies in the future, etc., as the application is not limited in this regard.

Next, an implementation environment related to the embodiment of the present application will be briefly described.

Fig. 2 is a block diagram of a 5G communication system according to an exemplary embodiment of the present application, where, as shown in fig. 2, a terminal accesses a PLMN through a RAN device when accessing the PLMN through a 3GPP access technology; when a terminal accesses a PLMN through a non-3GPP access technology, the terminal accesses the PLMN through an untrusted non-3GPP access point (untrusted non-3GPP access point) and an N3IWF (non-3 GPP Interworking Function ) device. The PLMN may include an AMF network element, an SMF network element, and a UPF network element. The RAN device or the N3IWF device may access a DN (Data Network) through a UPF Network element. The AMF network element is responsible for access, mobility management and the like, the SMF network element is responsible for session management and the like, and the UPF network element is responsible for routing, forwarding and the like of the data packet.

The terminal communicates with the AMF network element through an N1 interface (N1 for short); the RAN equipment or the N3IWF equipment communicates with the AMF network element through an N2 interface (N2 for short); the RAN equipment or the N3IWF equipment communicates with the UPF network element through an N3 interface (N3 for short); the SMF network element communicates with the UPF network element through an N4 interface (N4 for short); the AMF network element communicates with the SMF network element via an N11 interface (N11 for short). The interface names between the various network elements in fig. 1 are explained by way of example only. Furthermore, in the 3GPP standard, there is an alternative reference point description method focusing on point-to-point interaction between functions, and thus the above-mentioned interfaces may also be referred to as reference points. For example, N1 is a reference point between the UE and the AMF, and N4 is a reference point between the SMF and the UPF. The application does not limit the names of the reference points or interfaces, and can realize the interaction between the functions.

In one embodiment, the RAN device mentioned above refers to a device when accessing the PLMN through the 3GPP access technology, and may be, for example, a base station, a BNG (Broadband Network Gateway, broadband network service gateway), an aggregation switch, etc., which is not limited by the embodiment of the present application. The base stations may include various forms of base stations, for example: macro base stations, micro base stations (also referred to as small stations), relay stations, access points, and the like, as the present application is not limited in this regard.

In one embodiment, the above-mentioned N3IWF device refers to a device when accessing a PLMN through a non-3 GPP access technology, and may be, for example, a BNG, a BRAS (Broadband Remote Access Server ), a fixed network access gateway, a WLAN (Wireless Local Area Network ) access gateway, etc., which is not limited by the present application.

The RAN device, the N3IWF device, the AMF network element, the SMF network element, and the UPF network element of fig. 2 are not limited by names for functions of the network elements. In 5G networks and other networks in the future, RAN devices, N3IWF devices, AMF network elements, SMF network elements, and UPF network elements may also be other names, which are not limited by the embodiments of the present application. For example, the N3IWF device may also be replaced with NG-PDG (Next Generation Packet Data Gateway ) or N3IWF network element, non-trusted non-3 GPP access gateway, AGF (Access Gateway Function, fixed network access gateway function). For example, it is also possible that an AMF network element is replaced by an AMF or an AMF entity, etc. For example, it is also possible that the SMF network element is replaced by an SMF or an SMF entity, etc. Fig. 2 is merely illustrative and not limiting of the application.

In addition, the PLMN may further include a system UDM network element, an AUSF network element, a PCF network element, etc., which is not limited in the embodiment of the present application.

In the 5G network architecture, the terminal may access different AMF network elements in the same PLMN through a 3GPP access technology and a non-3 GPP access technology; or according to the existing mechanism, the terminal can access the same AMF network element in the same PLMN through the 3GPP access technology and the non-3 GPP access technology; or, the terminal may access different AMF network elements in different PLMNs through a 3GPP access technology and a non-3 GPP access technology, which is not limited by the embodiment of the present application.

Having described the relevant terms and the implementation environment related to the embodiments of the present application, the following describes the data closing method provided by the embodiments of the present application in detail with reference to the accompanying drawings.

Referring to fig. 3, fig. 3 is a flowchart illustrating a data closing method according to an exemplary embodiment of the present application, which may be applied to the above-described 5G communication system shown in fig. 2, and the data closing method may include at least some of the following:

step 310: the terminal sends a first message to a first network element, wherein the first message comprises: and the first indication information is used for indicating the non-3 GPP data of the terminal to be closed.

The first network element may be an SMF and the first message may be a PDU session establishment or modification request.

Wherein, the PLMN allows the terminal to access through the 3GPP access technology and the non-3 GPP access technology simultaneously, and the terminal can establish a PDU (Protocol Data Unit ) session based on the 3GPP access network and the non-3 GPP access network, respectively.

After establishing the PDU session, the terminal can reconstruct and modify the established PDU session, and when modifying, the terminal needs to send a PDU session reconstruction or modification request to the SMF of the access network, which can be a 3GPP access network and/or a non-3 GPP access network.

Because the access network is accessed with a plurality of terminals, the terminals can reconstruct and modify the established PDU session after establishing the PDU session. Therefore, each PDU session reestablishment or modification request sent by the terminal may carry a session ID (Identity) of the PDU session, and the AMF sends the terminal identifier to the SMF, so that the SMF may determine a unique session according to the session ID and the terminal identifier.

When the user needs to close the non-3 GPP data, the method can be realized by sending a PDU session establishment or modification request, namely, the request can carry first indication information for indicating the non-3 GPP data of the terminal to close.

In addition, since NAS control plane functions are located between the terminal and the AMF of the core network and the terminal, and the control plane protocol is mainly responsible for connection establishment, mobility, and security. Therefore, in the present application, the transmitted message or request may be implemented by NAS, and the present application does not limit signaling and radio bearers and the like used in the interaction process.

The communication between the terminal and the SMF is typically indirect communication by means of an AMF in the core network. However, as the 5G network architecture evolves, the following communication systems may use other communication devices or modes to perform the communication process described above, and the embodiments of the present application are merely illustrated by way of example and not limitation.

Step 320: the first network element receives a first message from the terminal.

As shown in fig. 3, when the first network element is an SMF and the first message is a PDU session establishment or modification request, the SMF first determines whether the PDU session establishment or modification request carries first indication information when receiving the PDU session establishment or modification request, and notifies the UPF of non-3 GPP data closure of the terminal when carrying the first indication information. Or the terminal always carries the first indication information in the PDU session establishment or modification request sent to the SMF, and the SMF needs to inform the UPF of the non-3 GPP data closing of the terminal under the condition that the first indication information is used for indicating the non-3 GPP data closing.

Step 330: the first network element informs the third network element of the non-3 GPP data closure of the terminal.

Wherein the first network element may be an SMF and the third network element may be a UPF. Because the UPF functions as packet routing and forwarding, packet detection, quality of service processing, packet filtering, traffic measurement, etc., when the terminal informs the first network element that the non-3 GPP data of the terminal is closed, the first network element can inform the UPF that the data packet sent by the terminal is not transmitted any more, and also stop the traffic charging of the terminal in the non-3 GPP access network. Thus, in the non-3 GPP access network, user fees can be saved.

When the SMF informs the UPF that the non-3 GPP data of the terminal is closed, it may also carry an identification of the session that needs to be closed to the non-3 GPP data. The UPF performs non-3 GPP data closure for the session.

The communication between the SMF and the UPF may be direct communication or indirect communication through other network elements. The application is not limited in this regard.

Step 340: the first network element sends a second message to the terminal.

The first network element receives the first message, and if the first message is a PDU session establishment or modification request, the second message sent by the first network element to the terminal may be a PDU session establishment or modification completion message.

As shown in fig. 3, the SMF sends a PDU session establishment or modification completion message to the terminal, where the message is used to indicate that the non-3 GPP data of the session of the terminal is closed, and the forwarding and route establishment process of the terminal sending data packet is no longer performed, and at the same time, charging for the traffic in the terminal non-3 GPP access network is stopped.

Further, after the SMF notifies the UPF that the non-3 GPP data of the terminal is closed, the SMF may wait for the UPF to send a PDU session establishment or modification completion message to the terminal when it confirms that the data packet sent by the terminal has been transmitted. Therefore, the terminal can be notified again under the condition that the data packet sent by the terminal is ensured to be sent completely, the situation that the terminal does not complete the sending of the important message because of the closing of non-3 GPP data is avoided, and the communication effectiveness of the terminal is ensured.

Communication between the SMF and the terminal is typically indirect through the AMF. However, as the 5G network architecture evolves, the following communication systems may use other communication devices or modes to perform the communication process described above, and the embodiments of the present application are merely illustrated by way of example and not limitation.

In the embodiment of the present application, the terminal may send a first message to the first network element, where the first message includes: and the first indication information is used for indicating the non-3 GPP data of the terminal to be closed. After receiving the first indication information, the first network element informs the third network element that the non-3 GPP data of the terminal is closed, and then sends a second message to the terminal. Therefore, the data closing function in the non-3 GPP is realized between the terminal and the core network, and the user cost is saved.

Referring to fig. 4, fig. 4 is a flowchart illustrating a data closing method according to another exemplary embodiment of the present application, which may be applied to the above-described 5G communication system shown in fig. 2, and the data closing method may include at least some of the following:

step 410: the terminal sends a first message to a first network element, wherein the first message comprises: and the first indication information is used for indicating the non-3 GPP data of the terminal to be closed.

Step 420: the first network element receives a first message from a terminal.

Step 430: the first network element informs the third network element of the non-3 GPP data closure of the terminal.

Step 440: the first network element sends a second message to the terminal.

The specific implementation process of the steps 410 to 440 may refer to the embodiment shown in fig. 3, and the disclosure is not repeated here.

In one embodiment, the first network element in the steps 410-440 and the following steps may be an SMF, the first message may be a PDU session establishment or modification request, and the second message may be a PDU session establishment or modification complete message. The third network element may be a UPF.

Step 450: and the third network element receives the downlink data of the terminal.

After the terminal closes the non-3 GPP data, the application server does not know that the terminal has closed the data traffic of the non-3 GPP. There may still be downstream data sent by the application server side. If the third network element is a UPF, when the UPF receives the downlink data, determining the terminal that receives the downlink data according to the identification information carried in the downlink data or according to the previously established routing relationship.

After determining the terminal of the received downlink data, if the terminal has closed the non-3 GPP data, the UPF does not transmit the data packet. But in order to avoid that the user therefore misses the important information, the UPF will inform the terminal about the presence of downstream data through other network elements.

Step 460: the third network element informs the first network element that the downlink data of the terminal exists.

The application does not limit the mode of informing the first network element that the downlink data of the terminal exists by the third network element, so long as the first network element can know that the downlink data of the terminal arrives.

As an example, the arrival notification of the downlink data may be a paging message when the terminal is in an idle state. When the terminal is in a connected state, the arrival Notification of the downlink data may be a Notification message of the NAS layer. The third network element forwards the paging message or the Notification message to the first network element.

In addition, when the third network element informs the first network element that the downlink data arrives, the notification message may carry the terminal identifier and/or the session identifier of the terminal corresponding to the downlink data.

Step 470: the first network element inquires of the second network element whether the terminal can use the 3GPP and the non-3 GPP access technologies simultaneously.

Wherein the second network element may be an AMF. When the first network element SMF receives the downlink data of the terminal, the SMF does not determine the condition of the terminal accessing the core network, so that the SMF needs to determine the processing mode of the downlink data according to the condition of the access network registered by the terminal.

As an example, the SMF may send a query message to the AMF, where the query message carries a terminal identifier corresponding to the downlink data. The AMF determines the corresponding terminal according to the terminal identification and inquires the access network registered by the terminal.

If the terminal only registers the non-3 GPP, the terminal does not transmit any data packet after closing the non-3 GPP data. That is, the subsequent steps 480-490 are not performed.

In one embodiment, the SMF receives a subscription notification sent by the second network element, where the subscription notification is used to notify the terminal whether the 3GPP and non-3 GPP access technologies are used simultaneously.

As an example, when the second network element is an AMF, since the SMF subscribes to the registration situation of the terminal in advance, when the AMF receives the registration request of the terminal, the SMF is informed about the access network situation of the terminal. The access network situation of the terminal may include at least one of using a 3GPP access technology, using both a non-3 GPP and a 3GPP access technology, and using a non-3 GPP access technology.

In summary, after the non-3 GPP data of the terminal is turned off, and the user also uses the 3GPP access technology, the following steps 480 to 490 are performed. That is, when the terminal registers 3GPP and non-3 GPP at the same time and downlink data arrives, the first network element triggers the second network element to send an arrival notification of the downlink data to the terminal.

Step 480: and the second network element sends the arrival notification of the downlink data to the terminal.

The arrival notification may carry indication information of downlink data, for example, a service identifier or a data identifier corresponding to the downlink data, which is not limited in the present application.

In addition, the arrival notification of the downlink data may be a paging message when the terminal is in an idle state. When the terminal is in a connected state, the arrival Notification of the downlink data may be a Notification message of the NAS layer.

Step 490: and the terminal receives the arrival notification of the downlink data sent by the second network element.

In one embodiment, a PDU session corresponding to downlink data is switched from a non-3 GPP access to a 3GPP access, and the downlink data is received using the switched PDU session.

That is, when the terminal receives the arrival notification of the downlink data, the terminal may choose to receive the downlink data through the registered 3GPP access network, so as to avoid missing the important session message.

In one embodiment, the indication information of the downlink data may be carried in the arrival notification of the downlink data, so that a user may determine whether to need to perform reception switching according to the indication information.

In the embodiment of the application, when the non-3 GPP data of the terminal is closed and the downlink data of the terminal exists, whether the terminal uses the 3GPP and the non-3 GPP access technology at the same time can be further determined. Under the condition that the terminal uses the 3GPP and the non-3 GPP access technologies at the same time and downlink data arrives, the first network element triggers the second network element to send the arrival notification of the downlink data to the terminal. The terminal receives the arrival notice of the downlink data, and can switch the PDU session corresponding to the downlink data from the non-3 GPP to the 3GPP, and receive the downlink data by using the switched PDU session. Therefore, on the basis of realizing the non-3 GPP data closing function, the terminal using the 3GPP and the non-3 GPP access technology can be notified that the arrival information of the downlink data of the terminal exists, and the terminal can receive the downlink data through switching of different access networks, so that the missing of important session information is avoided.

Based on the embodiments shown in fig. 3 and fig. 4, in the non-3 GPP access network, there is currently no unified regulation and limitation on whether the terminal and the core network have the capability of closing non-3 GPP data, so the terminal may report whether itself has the capability of closing non-3 GPP data when accessing the core network. Meanwhile, the second network element can also inform whether the core network to be accessed by the terminal has the capability of closing the non-3 GPP data.

Referring to fig. 5, fig. 5 is a flowchart illustrating a registration method according to an exemplary embodiment of the present application, which may be applied to the 5G communication system shown in fig. 2, and the data closing method may include at least some of the following:

step 510: the terminal sends a third message to the second network element, wherein the third message comprises capability information, and the capability information is used for indicating whether the terminal has the capability of closing the non-3 GPP data.

Since the terminal needs to register with the AMF each time it accesses the core network, the second network element may be the AMF, and the third message may be a registration request, where the registration request is used to request access to the core network using a non-3 GPP access technology, or the registration request is used to request access to the core network using a 3GPP access technology. It should be noted that, the terminal may access the core network by using both 3GPP and non-3 GPP access technologies, and the present application does not limit the access technologies adopted by the terminal.

If the third message is a registration request, the trigger time of the terminal sending the registration request may be when the terminal leaves the current registration area or when the terminal needs to re-register to the core network each time when the terminal registration fails.

The terminal may carry the capability information in the sent registration request, or may carry the capability information in other message requests, which is not limited in the present application, but only by the fact that the terminal and the core network interactively determine whether the above has the capability of closing the non-3 GPP data.

Step 520: the second network element receives a third message from the terminal.

When the AMF receives the third message of the terminal, it needs to determine whether the terminal uses the non-3 GPP access network, and further, it needs to determine whether there is a service supporting the non-3 GPP access network in the subscription information of the terminal.

The subscription information includes the service information of the terminal subscription, the identity information of the terminal, and the like, which is not limited in the present application. The service information of the terminal is stored in a fourth network element, which may be unified data management as an example.

The second network element may be obtained from the fourth network element UDM when needed. And secondly, after the terminal is registered with the second network element, the second network element also stores the subscription information of the terminal, but the subscription information stored in the second network element is also invalid when the registered access network is invalid.

As an example, when the terminal is a mobile phone, the subscription information of the terminal stored by the second network element is valid according to the old time during the short power-on restarting process of the terminal.

Therefore, if the third message is a registration request, the second network element determines whether the subscription information of the terminal is valid after receiving the registration request from the terminal, and if the subscription information of the terminal is invalid, the subscription information of the terminal is acquired from the UDM.

Step 530: the second network element sends a fourth message to the terminal, wherein the fourth message comprises: and second indication information for indicating whether the core network has a capability of non-3 GPP data closure.

If the third message sent by the terminal is a registration request, the fourth message sent by the second network element to the terminal may be a registration completion message.

As one example, when subscription information of a terminal is determined and the terminal has a capability of non-3 GPP data closure, the AMF transmits a registration completion message to the terminal. The registration completion message is used to inform that the terminal has successfully accessed to the core network through the non-3 GPP access technology, and can use the network for communication.

Step 540: the terminal receives a fourth message from the second network element.

After receiving the fourth message, the terminal can determine whether the core network has the capability of closing the non-3 GPP data. After the terminal and the core network have the capability of closing the non-3 GPP data at the same time, the embodiments shown in fig. 3 or fig. 4 may be used to perform the non-3 GPP data closing operation.

In the embodiment of the application, when the terminal sends the third message to the second network element to connect to the core network through the non-3 GPP access technology, the third message includes capability information, and the capability information is used for indicating whether the terminal has the capability of closing the non-3 GPP data. Meanwhile, the second network element can also inform the terminal through the fourth message whether the core network to be accessed has the capability of closing the non-3 GPP data. In the application, the terminal and the core network can mutually determine whether each other has the capability of closing the non-3 GPP data, so that the effectiveness of closing the non-3 GPP data can be improved. Avoiding the generation of more expenses in the process of using network communication due to the fact that one party does not have the capability of closing non-3 GPP data.

Based on the several embodiments shown above, there may be exemption services in the subscription information of the terminal that are configured by the operator and the core network to the user. After the non-3 GPP data is closed, the terminal can still use the network to communicate by the exemption service. Therefore, when the terminal closes the non-3 GPP data, the exemption service of the terminal can be further determined, and the exemption service can still be normally used after the terminal closes the non-3 GPP data. For example, the exemption service configured by the core network includes telephone, short message, file, etc.

Referring to fig. 6, fig. 6 is a flowchart of a data closing method according to another exemplary embodiment of the present application, which may be applied to the 5G communication system shown in fig. 2, where the data closing method is based on the above embodiments, and may further include at least some of the following:

step 610: and obtaining the second exemption service from the fourth network element.

The second exemption service is stored in the subscription information of the terminal, and in one embodiment, the second exemption service may be all exemption services subscribed by the terminal, or may be part of exemption services subscribed by the terminal, which is not limited in the present application.

The second exemption service may be that the second network element obtains from the fourth network element and sends the second exemption service to the terminal through the fourth message.

Step 620: the second network element sends a fourth message to the terminal, wherein the fourth message comprises: second indication information and service information of a second exemption service.

The second indication information is used for indicating whether the core network has the capability of closing non-3 GPP data, and the second exemption service is a whole set or a subset of the exemption service subscribed by the terminal.

In addition, in step 610, the second exemption service may also be that the first network element obtains from the fourth network element and sends the second exemption service to the terminal through the second message. As such, the above step 620 may be replaced with the following step 630:

Step 630: the first network element sends a second message to the terminal, the second message comprising: and the service information of the second exemption service.

Fig. 6 further includes a registration process of the terminal to the second network element, a non-3 GPP data closing process of the terminal, and a case when there is downlink data after the data closing, where the above processes may refer to the embodiments shown in fig. 3, fig. 4, and fig. 5, which are not described herein again, and the above steps 610 to 630 only explain the second exemption service acquisition process.

In summary, the terminal may obtain the second exemption service from the fourth message, or may obtain the second exemption service from the second message, or may obtain the second exemption service in other manners. In addition, the core network can also inform the terminal of the corresponding second exemption service through other network elements, and the application does not limit the time and the mode of the terminal for acquiring the second exemption service or the core network for issuing the second exemption service.

Based on the embodiment shown in fig. 6, in the non-3 GPP access network, the terminal may also determine its own exemption service, and inform the core network of the determined exemption service.

The terminal may inform the core network of the exemption service determined by itself when sending the third message to the second network element. The terminal may also send a first message to the first network element, informing the core network of the exemption service determined by the terminal, where the first message may be a PDU session establishment or modification request. These two possible implementations are explained below.

(1) The terminal sends a third message to the second network element, wherein the third message comprises capability information, and the capability information is used for indicating whether the terminal has the capability of closing the non-3 GPP data.

In one embodiment, the third message further comprises: and the first exemption service is the exemption service determined by the terminal.

That is, the terminal may send the third message including capability information and service information of the first exemption service, where the service information of the first exemption service may be a service identifier, a service class, a service attribute, and so on. The third message may be a registration request, and in the case where the third message sent by the terminal to the second network element is a registration request, the fourth message sent by the second network element to the terminal may be a registration completion message.

Therefore, in one possible implementation manner, after the second network element receives the third message, the second network element obtains subscription information of the terminal from the fourth network element, determines a second exemption service according to the subscription information of the terminal, and sends a fourth message to the terminal, where the fourth message includes: the second indication information is used for indicating whether the core network has the capability of closing non-3 GPP data or not, and the second exemption service is the whole set or subset of the exemption service subscribed by the terminal.

As an example, the exemption service for the subscription of the terminal includes: service 1, service 2, service 3, service 4 and service 5. The second network element determines that the second exemption service available by the terminal at the moment is: and if the service 1, the service 2 and the service 4 are sent to the terminal through the registration completion message by the second network element, and the service 1, the service 2 and the service 4 can be normally used after the terminal closes the non-3 GPP data.

In the above implementation manner, the second network element informs the terminal of what the first exemption service sent by the terminal is, and at this time, the second exemption service can be used in the core network. Therefore, the terminal can be ensured to confirm the normal use of the exemption service after closing the non-3 GPP data.

In another possible implementation manner, after the second network element receives the third message, subscription information of the terminal is obtained from the fourth network element. And then sending a fourth message to the terminal, wherein the fourth message comprises: the second indication information is used for indicating whether the core network has the capability of closing non-3 GPP data or not, the third exemption service is determined according to the first exemption service and the second exemption service, the first exemption service is the exemption service determined by the terminal, and the second exemption service is the whole set or subset of the exemption service subscribed by the terminal.

As an example, the exemption service for the subscription of the terminal includes: service 1, service 2, service 3, service 4 and service 5. The second network element determines that the second exemption service available by the terminal at the moment is: service 1, service 2 and service 4, and the first exemption service sent by the terminal includes: service 1 and service 3. The second network element sends the service 1 to the terminal through the registration completion message, and the terminal can normally use the service 1 after closing the non-3 GPP data.

In the implementation manner, when the exemption service that the terminal can use is determined, the decision of the terminal is fully considered, and the service that the terminal can normally use after closing the non-3 GPP data is decided according to the first exemption service determined by the terminal and the second exemption service configured by the core network, so that the determined third exemption service is more suitable for the target requirement of the user under the condition of ensuring availability.

(2) The terminal sends a first message to a first network element, wherein the first message comprises: and the first indication information is used for indicating the non-3 GPP data of the terminal to be closed.

In one embodiment, the first message further comprises: and the first exemption service is the exemption service determined by the terminal.

That is, the terminal sending the first message may include the first indication information and the service information of the first exemption service, and the service information of the first exemption service may be a service identifier, a service class, a service attribute, and so on. The first message may be a PDU session establishment or modification request, and the second message sent by the first network element to the terminal may be a PDU session establishment or modification complete message in case that the first message sent by the terminal to the first network element is a PDU session establishment or modification request.

Thus, in one possible implementation, after receiving the first message, the first network element obtains subscription information (second exemption service) of the terminal from the fourth network element, and sends a second message to the terminal, where the second message includes service information of the second exemption service, and the second exemption service is a complete set or a subset of the exemption services subscribed to by the terminal.

In one embodiment, the first network element may further obtain subscription information of the terminal from the second network element.

As an example, the exemption service for the subscription of the terminal includes: service 1, service 2, service 3, service 4 and service 5. The first network element determines that the second exemption service available at the moment by the terminal is: and if the service 1, the service 2 and the service 4 are the service 1, the service 2 and the service 4, the first network element sends the establishment or modification completion message of the PDU session to the terminal, and the service 1, the service 2 and the service 4 can be normally used after the terminal closes the non-3 GPP data.

In the above implementation manner, the first network element informs the terminal of the first exemption service transmitted by the terminal, and at this time, the second exemption service can be used in the core network. Therefore, the terminal can be ensured to confirm the normal use of the exemption service after closing the non-3 GPP data.

In another possible implementation manner, after the first network element receives the first message, the subscription information (second exemption service) of the terminal is obtained from the fourth network element or the second network element, and then the second message is sent to the terminal, where the second message includes service information of a third exemption service, and the third exemption service is determined according to the first exemption service and the second exemption service, where the first exemption service is an exemption service determined by the terminal, and the second exemption service is a complete set or a subset of the exemption services subscribed by the terminal.

As an example, the exemption service for the subscription of the terminal includes: service 1, service 2, service 3, service 4 and service 5. The first network element determines that the second exemption service available at the moment by the terminal is: service 1, service 2 and service 4, and the first exemption service sent by the terminal includes: service 1 and service 3. The first network element sends the service 1 to the terminal through the PDU session establishment or modification completion message, and the terminal can normally use the service 1 after closing the non-3 GPP data.

In the implementation manner, when the exemption service which can be used by the terminal is determined, the decision of the terminal is fully considered. And determining the service which can be normally used by the terminal after closing the non-3 GPP data according to the first exemption service determined by the terminal and the second exemption service configured by the core network, so that the determined third exemption service is more in accordance with the target requirement of the user under the condition of ensuring availability.

It should be understood that any combination of the above registration procedure, the first exempt service sending method, the data closing method, the second exempt service sending method, and the third exempt service sending method is within the scope of the present application, and the above embodiments are only for illustration purposes and not limitation. It should be appreciated that other trigger occasions may be employed, and other implementations may be employed, including but not limited to any combination of the above.

Fig. 7 is a schematic structural diagram of a data closing apparatus according to an exemplary embodiment, the apparatus 700 may be configured in a terminal, and the apparatus 700 includes:

a sending module 710, configured to send a first message to a first network element, where the first message includes: and the first indication information is used for indicating the non-3 GPP data of the terminal to be closed.

In one embodiment, the first message further comprises: and the first exemption service is the exemption service determined by the terminal.

In an embodiment the first network element is a session management function SMF and the first message is a protocol data unit PDU session establishment or modification request.

In one embodiment, the apparatus 700 further comprises:

a receiving module 720, configured to receive a second message from the first network element, where the second message includes: and the second exemption service is the whole set or subset of the exemption service signed by the terminal.

In one embodiment, the receiving module 720 is further configured to:

receiving a second message from the first network element, the second message comprising: and the third exemption service is determined according to the first exemption service and the second exemption service, wherein the first exemption service is the exemption service determined by the terminal, and the second exemption service is the whole set or subset of the exemption services subscribed by the terminal.

In one embodiment, the second message is a protocol data unit, PDU, session setup or modification complete message.

In one embodiment, the terminal may use both 3GPP and non-3 GPP access technologies, and the apparatus 700 further comprises:

A receiving module 720, configured to receive an arrival notification of downlink data sent by the second network element;

a switching module 730, configured to switch the PDU session corresponding to the downlink data from the non-3 GPP to the 3GPP, and receive the downlink data using the PDU session after the switching.

In one embodiment, the sending module 710 is further configured to:

and sending a third message to the second network element, wherein the third message comprises capability information, and the capability information is used for indicating whether the terminal has the capability of closing the non-3 GPP data.

In one embodiment, the third message further comprises: and the first exemption service is the exemption service determined by the terminal.

In one embodiment, the second network element is an access and mobility management function AMF and the third message is a registration request.

In one embodiment, the receiving module 720 is further configured to:

receiving a fourth message from the second network element, the fourth message comprising: and second indication information for indicating whether the core network has a capability of non-3 GPP data closure.

In one embodiment, the fourth message further comprises: and the second exemption service is the whole set or subset of the exemption service signed by the terminal.

In one embodiment, the fourth message further comprises: and the third exemption service is determined according to the first exemption service and the second exemption service, wherein the first exemption service is the exemption service determined by the terminal, and the second exemption service is the whole set or subset of the exemption services subscribed by the terminal.

In one embodiment, the fourth message is a registration complete message.

In the embodiment of the present application, the terminal may send a first message to the first network element, where the first message includes: first indication information. The first indication information is used for indicating the non-3 GPP data of the terminal to be closed, so that the data closing function in the non-3 GPP can be realized through the carried first indication information.

Fig. 8 is a schematic structural diagram of a data closing device, according to an exemplary embodiment, on which a first network element is running, the device 800 includes:

a receiving module 810, configured to receive a first message from a terminal, where the first message includes a data close indication of a non-3 GPP access;

a sending module 820, configured to notify the third network element that the non-3 GPP data of the terminal is closed.

Optionally, the sending module 820 is further configured to:

and notifying the third network element of the service information of the exemption service of the terminal.

Optionally, the first network element is a session management function SMF, the third network element is a user plane function UPF, and the first message is a protocol data unit PDU session establishment or modification request.

Optionally, the service information of the exemption service of the terminal includes: and the first exemption service is the exemption service determined by the terminal.

Optionally, the service information of the exemption service of the terminal includes: and the second exemption service is the whole set or subset of the exemption service signed by the terminal.

Optionally, the sending module 820 is further configured to:

sending a second message to the terminal, the second message comprising: and the service information of the second exemption service.

Optionally, the service information of the exemption service of the terminal includes: and the third exemption service is determined by a first exemption service and a second exemption service, wherein the first exemption service is determined by the terminal, and the second exemption service is a complete set or a subset of the exemption services subscribed by the terminal.

Optionally, the sending module 820 is further configured to:

sending a second message to the terminal, the second message comprising: and the service information of the third exemption service.

Optionally, the first message carries service information of the first exemption service.

Optionally, the apparatus 800 further comprises:

and the obtaining module 830 is configured to obtain the second exemption service from the fourth network element.

Optionally, the fourth network element is a unified data management, UDM.

Optionally, the apparatus 800 further comprises:

and the triggering module 840 is configured to trigger the second network element to send an arrival notification of the downlink data to the terminal when the terminal uses the 3GPP and the non-3 GPP access technologies at the same time and there is an arrival of the downlink data.

Optionally, the apparatus 800 further comprises:

a query module 850 configured to query the second network element whether the terminal uses the 3GPP and the non-3 GPP access technologies simultaneously;

or alternatively, the first and second heat exchangers may be,

and a receiving module 810, configured to receive a subscription notification sent by the second network element, where the subscription notification is used to notify whether the terminal uses the 3GPP and the non-3 GPP access technologies at the same time.

Optionally, the second network element is an access and mobility management function AMF.

In the embodiment of the application, a first network element receives a first message from a terminal, wherein the first message comprises a data closing instruction of non-3 GPP access; and notifying the third network element of non-3 GPP data closing of the terminal. Therefore, after the third network element knows that the non-3 GPP data of the terminal is closed, the data charging in the non-3 GPP access network can be stopped, the data closing function in the non-3 GPP can be realized, and meanwhile, the network charge of the user is saved.

Referring to fig. 9, a schematic structural diagram of a communication device (terminal or access network device) according to an exemplary embodiment of the present application is shown, where the communication device includes: a processor 901, a receiver 902, a transmitter 903, a memory 904, and a bus 905.

The processor 901 includes one or more processing cores, and the processor 901 executes various functional applications and information processing by running software programs and modules.

The receiver 902 and the transmitter 903 may be implemented as one communication component, which may be a communication chip.

The memory 904 is coupled to the processor 901 via a bus 905.

The memory 904 may be used for storing at least one instruction that the processor 901 is configured to execute to implement the steps performed by the first IAB network device in the various method embodiments described above.

Further, the memory 904 may be implemented by any type of volatile or nonvolatile storage device, including but not limited to: magnetic or optical disks, EEPROMs (Electrically Erasable Programmable Read Only Memory ), EPROMs (Erasable Programmable Read-Only Memory, erasable programmable Read Only Memory), SRAMs (Static Random Access Memory ), ROMs (Read Only Memory), magnetic memories, flash memories, PROMs (Programmable Read-Only Memory, programmable Read Only Memory).

The present application provides a computer readable storage medium having stored therein at least one instruction that is loaded and executed by the processor to implement the data shutdown method provided by the above-described method embodiments.

The application also provides a computer program product which, when run on a computer, causes the computer to perform the data closing method provided by the above method embodiments.

Those skilled in the art will appreciate that in one or more of the examples described above, the functions described in the embodiments of the present application may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, these functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

The foregoing description of the preferred embodiments of the present application is not intended to limit the application, but rather, the application is to be construed as limited to the appended claims.

Claims (40)

1. A data closing method, characterized in that it is applied in a terminal, the method comprising:

transmitting a first message to a first network element, the first message comprising: the first indication information is used for indicating the non-3 GPP data of the terminal to be closed;

wherein the first message further comprises: the service information of a first exemption service, wherein the first exemption service is the exemption service determined by the terminal;

wherein the method further comprises:

receiving a second message from the first network element, the second message comprising: and the second exemption service is a complete set or a subset of exemption services subscribed by the terminal, and the third exemption service is determined according to the first exemption service and the second exemption service.

2. The method according to claim 1, wherein the first network element is a session management function, SMF, and the first message is a protocol data unit, PDU, session establishment or modification request.

3. The method of claim 1, wherein the second message is a protocol data unit, PDU, session setup or modification complete message.

4. A method according to any of claims 1-3, wherein the terminal can use both 3GPP and non-3 GPP access technologies, the method further comprising:

receiving an arrival notification of downlink data sent by a second network element;

and switching the PDU session corresponding to the downlink data from the non-3 GPP to the 3GPP, and receiving the downlink data by using the PDU session after switching.

5. A method according to any one of claims 1-3, wherein the method further comprises:

and sending a third message to the second network element, wherein the third message comprises capability information, and the capability information is used for indicating whether the terminal has the capability of closing the non-3 GPP data.

6. The method of claim 5, wherein the third message further comprises: and the service information of the first exemption service.

7. The method of claim 4, wherein the second network element is an access and mobility management function, AMF, and the third message is a registration request.

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

receiving a fourth message from the second network element, the fourth message comprising: and second indication information, wherein the second indication information is used for indicating whether the core network has the capability of closing non-3 GPP data.

9. The method of claim 8, wherein the fourth message further comprises: and the service information of the second exemption service.

10. The method of claim 8, wherein the fourth message further comprises: and the service information of the third exemption service.

11. The method of claim 8, wherein the fourth message is a registration complete message.

12. A method for closing data, applied to a first network element, the method comprising:

receiving a first message from a terminal, wherein the first message comprises a data closing instruction of non-3 GPP access and carries service information of a first exemption service;

notifying a third network element that the data of the non-3 GPP access of the terminal is closed;

wherein the method further comprises:

notifying the third network element of service information of the exemption service of the terminal;

the service information of the exemption service of the terminal comprises: the service information of a first exemption service, wherein the first exemption service is the exemption service determined by the terminal; the service information of a second exemption service, wherein the second exemption service is a complete set or a subset of the exemption service subscribed by the terminal; and service information of a third exemption service, wherein the third exemption service is determined by the first exemption service and the second exemption service;

Wherein the method further comprises:

sending a second message to the terminal, wherein the second message comprises: and the service information of the second exemption service and the service information of the third exemption service.

13. The method according to claim 12, characterized in that the first network element is a session management function, SMF, the third network element is a user plane function, UPF, and the first message is a protocol data unit, PDU, session establishment or modification request.

14. The method according to claim 12, wherein the method further comprises:

and acquiring the second exemption service from the fourth network element.

15. The method of claim 14, wherein the fourth network element is a unified data management, UDM.

16. The method according to any one of claims 12-15, further comprising:

and triggering a second network element to send an arrival notification of the downlink data to the terminal under the condition that the terminal uses the 3GPP and the non-3 GPP access technologies at the same time and the downlink data arrives.

17. The method according to claim 12, wherein the method further comprises:

querying a second network element whether the terminal uses the 3GPP and non-3 GPP access technologies simultaneously;

Or alternatively, the first and second heat exchangers may be,

and receiving a subscription notification sent by a second network element, wherein the subscription notification is used for notifying whether the terminal uses the 3GPP and the non-3 GPP access technologies at the same time.

18. The method according to claim 16, wherein the second network element is an access and mobility management function, AMF.

19. A data closing apparatus, configured in a terminal, the apparatus comprising:

a sending module, configured to send a first message to a first network element, where the first message includes: the first indication information is used for indicating the non-3 GPP data of the terminal to be closed;

wherein the first message further comprises: the service information of a first exemption service, wherein the first exemption service is the exemption service determined by the terminal;

wherein the apparatus further comprises:

a receiving module, configured to receive a second message from the first network element, where the second message includes: and the second exemption service is a complete set or a subset of the exemption services signed by the terminal, and the third exemption service is determined according to the first exemption service and the second exemption service.

20. The apparatus of claim 19, wherein the first network element is a session management function, SMF, and wherein the first message is a protocol data unit, PDU, session establishment or modification request.

21. The apparatus of claim 19, wherein the second message is a protocol data unit PDU session setup or modification complete message.

22. The apparatus according to any of claims 19-21, wherein the terminal can use both 3GPP and non-3 GPP access technologies, the apparatus further comprising:

the receiving module is used for receiving the arrival notification of the downlink data sent by the second network element;

and the switching module is used for switching the PDU session corresponding to the downlink data from the non-3 GPP to the 3GPP, and receiving the downlink data by using the PDU session after switching.

23. The apparatus of any one of claims 19-21, wherein the sending module is further configured to:

and sending a third message to the second network element, wherein the third message comprises capability information, and the capability information is used for indicating whether the terminal has the capability of closing the non-3 GPP data.

24. The apparatus of claim 23, wherein the third message further comprises: and the service information of the first exemption service.

25. The apparatus of claim 22, wherein the second network element is an access and mobility management function, AMF, and the third message is a registration request.

26. The apparatus of claim 22, wherein the receiving module is further configured to:

receiving a fourth message from the second network element, the fourth message comprising: and second indication information, wherein the second indication information is used for indicating whether the core network has the capability of closing non-3 GPP data.

27. The apparatus of claim 26, wherein the fourth message further comprises: and the service information of the second exemption service.

28. The apparatus of claim 26, wherein the fourth message further comprises: and the service information of the third exemption service.

29. The apparatus of claim 26, wherein the fourth message is a registration complete message.

30. A data closing device, configured in a first network element, the device comprising:

the receiving module is used for receiving a first message from the terminal, wherein the first message comprises a data closing instruction of non-3 GPP access and carries service information of a first exemption service;

A sending module, configured to notify a third network element that the data of the non-3 GPP access of the terminal is closed;

wherein, the sending module is further configured to:

notifying the third network element of service information of the exemption service of the terminal;

the service information of the exemption service of the terminal comprises: the service information of a first exemption service, wherein the first exemption service is the exemption service determined by the terminal; the service information of a second exemption service, wherein the second exemption service is a complete set or a subset of the exemption service subscribed by the terminal; and service information of a third exemption service, wherein the third exemption service is determined by the first exemption service and the second exemption service;

wherein, the sending module is further configured to:

sending a second message to the terminal, wherein the second message comprises: and the service information of the second exemption service and the service information of the third exemption service.

31. The apparatus of claim 30, wherein the first network element is a session management function, SMF, the third network element is a user plane function, UPF, and the first message is a protocol data unit, PDU, session establishment or modification request.

32. The apparatus of claim 30, wherein the apparatus further comprises:

And the acquisition module is used for acquiring the second exemption service from the fourth network element.

33. The apparatus of claim 32, wherein the fourth network element is a unified data management, UDM.

34. The apparatus according to any one of claims 30-33, wherein the apparatus further comprises:

and the triggering module is used for triggering the second network element to send the arrival notification of the downlink data to the terminal under the condition that the terminal simultaneously uses the 3GPP and the non-3 GPP access technologies and the downlink data arrives.

35. The apparatus of claim 30, wherein the apparatus further comprises:

a query module, configured to query a second network element whether the terminal uses the 3GPP and non-3 GPP access technologies simultaneously;

or alternatively, the first and second heat exchangers may be,

the receiving module is configured to receive a subscription notification sent by a second network element, where the subscription notification is used to notify whether the terminal uses the 3GPP and the non-3 GPP access technologies at the same time.

36. The apparatus of claim 34, wherein the second network element is an access and mobility management function, AMF.

37. A terminal comprising a processor and a memory storing at least one instruction for execution by the processor to implement the steps of the method of any one of claims 1-11.

38. A first network element, characterized in that it comprises a processor and a memory, said memory storing at least one instruction for execution by said processor to implement the steps of the method of any of claims 12-18.

39. A computer readable storage medium having instructions stored thereon, which when executed by a processor cause an apparatus having the storage medium installed to implement the steps of the method of any of claims 1-11.

40. A computer readable storage medium having instructions stored thereon, which when executed by a processor cause an apparatus having the storage medium installed to implement the steps of the method of any of claims 12-18.