Information exchange methods and systems, data management network elements, and network function network elements
By sending UECM-related information to the first network function network element through the data management network element, the problem that other network elements cannot obtain UECM information in the prior art is solved, and a wider range of information interaction and communication support is realized.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA TELECOM CORP LTD
- Filing Date
- 2022-03-24
- Publication Date
- 2026-07-17
AI Technical Summary
In the existing technology, network elements other than NEF, SMSF, GMLC and NWDAF cannot obtain UECM-related information from data management network elements.
The data management network element receives an acquisition request from the first network function network element and sends UECM-related information to it. The first network function network element includes network elements other than NEF, SMSF, GMLC and NWDAF network elements.
This enables network elements other than NEF, SMSF, GMLC, and NWDAF to obtain UECM-related information from data management network elements, supporting a wider range of information interaction and communication processes.
Smart Images
Figure CN116847369B_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to the field of communication technology, and in particular to an information interaction method and system, a data management network element, and a network function network element. Background Technology
[0002] The data management network element provides User Equipment Context Management (UECM) services. UECM services include allowing other network elements to obtain UECM-related information from the data management network element through a Get operation.
[0003] Among the relevant technologies, only the Network Exposure Function (NEF) network element, the Short Message Service Function (SMSF) network element, the Gateway Mobile Location Center (GMLC) network element, and the Network Data Analytics Function (NWDAF) network element can obtain UECM-related information from the data management network element. Summary of the Invention
[0004] The inventors noted that in practice, various types of network elements have a need to obtain information related to the UECM of the data management network element.
[0005] In view of this, the present disclosure proposes the following solutions.
[0006] According to one aspect of the present disclosure, an information interaction method is provided, comprising: a data management network element receiving an acquisition request from a first network function network element, the acquisition request being used to acquire user equipment context management related information of the data management network element, wherein the first network function network element is a network element other than a network open function network element, a short message service function network element, a gateway mobile location center network element, and a network data analysis function network element; and the data management network element sending the information to the first network function network element.
[0007] According to another aspect of the embodiments of this disclosure, an information interaction method is provided, comprising: a first network function network element sending an acquisition request to a data management network element, the acquisition request being used to acquire information related to user equipment context management of the data management network element, wherein the first network function network element is a network element other than a network open function network element, a short message service function network element, a gateway mobile location center network element, and a network data analysis function network element; and the first network function network element receiving the information from the data management network element.
[0008] In some embodiments, the data management network element and the first network function network element belong to different core networks.
[0009] In some embodiments, the first network function element includes at least one of a session management function element, an access and mobility management function element, and a policy control function element.
[0010] In some embodiments, the first network function element includes a first session management function element.
[0011] In some embodiments, the information includes the identifier of at least one second network function element.
[0012] In some embodiments, the at least one second network function element includes a second session management function element.
[0013] In some embodiments, the first network function element provides services to the first user equipment, and one of the at least one second network function element provides services to the second user equipment communicating with the first user equipment.
[0014] In some embodiments, the first network function element is a first session management function element, and the second network function element is a second session management function element.
[0015] According to another aspect of the present disclosure, a data management network element is provided, comprising: a receiving module configured to receive an acquisition request from a first network function network element, the acquisition request being used to acquire user equipment context management related information of the data management network element, wherein the first network function network element is a network element other than a network open function network element, a short message service function network element, a gateway mobile location center network element, and a network data analysis function network element; and a sending module configured to send the information to the first network function network element.
[0016] According to another aspect of the present disclosure, a network function element is provided, including: a sending module configured to send an acquisition request to a data management element, the acquisition request being used to acquire user equipment context management related information of the data management element, wherein the network function element is an element other than a network open function element, a short message service function element, a gateway mobile location center element, and a network data analysis function element; and a receiving module configured to receive the information from the data management element.
[0017] According to another aspect of the present disclosure, an electronic device is provided, including: a memory; and a processor coupled to the memory, the processor being configured to execute the information interaction method described in any of the above embodiments based on instructions stored in the memory.
[0018] According to another aspect of the present disclosure, an information interaction system is provided, including: a data management network element as described in any of the above embodiments; and a first network function network element, which is a network function network element as described in any of the above embodiments.
[0019] According to another aspect of the present disclosure, an information interaction system is provided, including: the electronic device described in any of the above embodiments.
[0020] According to another aspect of the present disclosure, a computer-readable storage medium is provided, including computer program instructions, wherein the computer program instructions, when executed by a processor, implement the information interaction method described in any of the above embodiments.
[0021] According to another aspect of the present disclosure, a computer program product is provided, including a computer program, wherein when the computer program is executed by a processor, it implements the information interaction method described in any of the above embodiments.
[0022] In this embodiment of the disclosure, the data management network element receives acquisition requests from network function network elements other than the NEF network element, SMSF network element, GMLC network element, and NWDAF network element, and sends UECM-related information to the network function network element. This enables network elements other than the NEF network element, SMSF network element, GMLC network element, and NWDAF network element to acquire UECM-related information from the data management network element.
[0023] The technical solutions of this disclosure will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0025] Figure 1 This is a flowchart illustrating an information interaction method according to some embodiments of the present disclosure;
[0026] Figure 2 This is a flowchart illustrating an information interaction method according to other embodiments of this disclosure;
[0027] Figure 3 This is a flowchart illustrating an information interaction method according to some embodiments of the present disclosure;
[0028] Figure 4 This is a schematic diagram of the structure of a data management network element according to some embodiments of this disclosure;
[0029] Figure 5 This is a schematic diagram of the structure of network functional elements according to some embodiments of this disclosure;
[0030] Figure 6 These are schematic diagrams of the structure of an electronic device according to some embodiments of the present disclosure;
[0031] Figure 7 This is a schematic diagram of the structure of an information interaction system according to some embodiments of the present disclosure. Detailed Implementation
[0032] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.
[0033] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps set forth in these embodiments do not limit the scope of this disclosure.
[0034] At the same time, it should be understood that, for ease of description, the dimensions of the various parts shown in the accompanying drawings are not drawn according to actual scale.
[0035] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.
[0036] In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.
[0037] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.
[0038] Figure 1 This is a flowchart illustrating an information interaction method according to some embodiments of the present disclosure.
[0039] like Figure 1 As shown, the information interaction method includes steps 102 to 104.
[0040] In step 102, the data management network element receives an acquisition request from the first network function network element.
[0041] Here, the request is used to obtain information related to the UECM of the data management network element.
[0042] In some embodiments, the first network function (NF) element is a network element other than the NEF element, SMSF element, GMLC element, and NWDAF element.
[0043] In other embodiments, the first network function element is a network element other than at least one of the NEF, SMSF, GMLC, and NWDAF network elements. For example, the first network function element is a network element other than the NEF network element; another example is a network element other than the SMSF network element; yet another example is a network element other than the GMLC network element; and yet another example is a network element other than the NWDAF network element.
[0044] For example, the data management network element may include the Unified Data Management (UDM) network element in the 5G core network, and the request may be a "Nudm_UECM_Get_Request" message. In some embodiments, UECM-related information may include the identifier of the network element providing services to the UE. It should be understood that UECM-related information may also include other information.
[0045] In step 104, the data management network element sends UECM-related information to the first network function network element.
[0046] For example, a UDM network element can send a “Nudm_UECM_Get_Response” message carrying UECM-related information to a first network function network element.
[0047] In the above embodiments, the data management network element receives acquisition requests from network function network elements other than the NEF network element, SMSF network element, GMLC network element, and NWDAF network element, and sends UECM-related information to the network function network elements. This enables network elements other than the NEF network element, SMSF network element, GMLC network element, and NWDAF network element to acquire UECM-related information from the data management network element.
[0048] Figure 2 This is a flowchart illustrating an information interaction method according to other embodiments of this disclosure.
[0049] like Figure 2 As shown, the information interaction method includes steps 202 to 204.
[0050] In step 202, the first network function element sends an acquisition request to the data management element.
[0051] In step 204, the first network function element receives UECM-related information from the data management element.
[0052] Here, the request is used to obtain information related to the UECM of the data management network element. The first network function element can be a network element other than NEF, SMSF, GMLC, and NWDAF elements.
[0053] Other explanations can be found in [link to other explanations]. Figure 1 Further explanations regarding the relevant details are omitted here.
[0054] In the above embodiments, network function network elements other than NEF, SMSF, GMLC, and NWDAF network elements send acquisition requests to the data management network element and receive UECM-related information from the data management network element. Thus, network elements other than NEF, SMSF, GMLC, and NWDAF network elements can obtain UECM-related information from the data management network element when needed.
[0055] The following description, in conjunction with some embodiments, further illustrates the point. Figure 1 and Figure 2 The information interaction method shown.
[0056] In some embodiments, the data management network element and the first network function network element belong to the same core network. Thus, the first network function network element can obtain information related to the UECM of the data management network element located in the same core network as the first network function network element.
[0057] In other embodiments, the data management network element and the first network function network element belong to different core networks. Thus, the first network function network element located in one core network can obtain UECM-related information from the data management network element located in another core network.
[0058] In some embodiments, the first network function element includes at least one of a Session Management Function (SMF) element, an Access and Mobility Management Function (AMF) element, and a Policy Control Function (PCF) element.
[0059] For example, the first network function element can be an SMF element, an AMF element, or a PCF element.
[0060] In this way, at least one of the SMF, AMF, and PCF network elements can obtain UECM-related information from the data management network element.
[0061] In some embodiments, the UECM-related information of the data management network element includes the identifier of at least one second network function network element. Thus, the first network function network element can obtain the identifier of a second network function network element other than itself, in order to perform operations on the second network function network element based on the identifier, such as interacting with the second network function network element.
[0062] It should be understood that the type of the first network function element and the type of the second network function element can be the same or different.
[0063] For example, the first network function element is an SMF element (hereinafter referred to as the first SMF element), and the second network function element includes another SMF element that is different from the first SMF element (hereinafter referred to as the second SMF element). In this case, the type of the first network function element is the same as the type of the second network function element.
[0064] For example, the first network function element is an AMF (Advanced Network Function) element, and the second network function element includes an SMF (Self-Functional Network Function) element. In this case, the types of the first and second network function elements are different.
[0065] In some embodiments, a first network function element provides services to a first UE, and one of at least one second network function element provides services to a second UE communicating with the first UE. For example, communication between the first UE and the second UE includes voice calls, video calls, sending SMS messages, etc.
[0066] As one implementation, a first network function element providing services to the first UE is called a first SMF element, and a second network function element providing services to the second UE is called a second SMF element. The following text will combine... Figure 3 Further explanation.
[0067] In these embodiments, a first network function element providing services to a first UE can obtain the identifier of a second network function element providing services to a second UE communicating with the first UE, so as to perform operations on the second network function element based on the identifier of the second network function element. This facilitates communication between the first UE and the second UE.
[0068] Figure 3 This is a flowchart illustrating an information interaction method according to some embodiments of the present disclosure.
[0069] exist Figure 3In the diagram, the data management network element is shown as a UDM network element, the first network function network element is shown as a first SMF network element, and the second network function network element is shown as a second SMF network element. The first SMF network element is located in the first core network and provides services to the first UE; the second SMF network element is located in a second core network different from the first core network and provides services to the second UE that communicates with the first UE.
[0070] In step 301, the first UE and the first SMF network element execute the Protocol Data Unit (PDU) session establishment process to establish the first PDU session.
[0071] In step 302, the second UE and the second SMF network element execute the PDU session establishment procedure to establish the second PDU session.
[0072] In step 303, the second SMF network element and the UDM network element perform the registration process for the second PDU session.
[0073] For example, the second SMF network element can send a registration request for the second PDU session to the UDM network element, and the UDM network element can send a response message corresponding to the registration request to the second SMF network element, thereby completing the registration process of the second PDU session.
[0074] The registration request can be a "Nudm_UECM_Registration_Request" message carrying information such as the second UE's Subscription Permanent Identifier (SUPI), the second UE's Data Network Name (DNN), the identifier of the second PDU session, and the identifier of the second SMF.
[0075] Upon receiving the "Nudm_UECM_Registration_Request" message, the UDM network element can store the information carried in the "Nudm_UECM_Registration_Request" message as UECM-related information in the Unified Data Repository (UDR) network element of the second core network. Figure 3 (Not shown in the image) for subsequent use (e.g., upon receiving an acquisition request, the UDM network element can obtain UECM-related information, including the identifier of the second SMF, from the UDR network element in order to send UECM-related information).
[0076] In addition, the UDM network element can also send a “Nudm_UECM_Registration_Response” message as a response message to the second SMF network element to complete the registration process of the second PDU session.
[0077] Then, the first SMF network element executes step 202, and the UDM network element executes step 102. That is, the first SMF network element sends an acquisition request to the UDM network element, and the UDM network element receives the acquisition request from the first SMF network element.
[0078] For example, the first SMF network element sends a "Nudm_UECM_Get_Request" message to the UDM network element. The "Nudm_UECM_Get_Request" message may carry at least one of the second UE's SUPI and the identifier of the second PDU session, so that the UDM network element can determine the UECM-related information for the second UE.
[0079] In some embodiments, the "Nudm_UECM_Get_Request" message may also carry the network function type (NFType) so that the UDM network element can identify the network function network element of a specific type that provides services to the second UE, and subsequently send UECM-related information including this identifier.
[0080] Figure 3 The NF Type is schematically shown as SMF. That is, after receiving an acquisition request, the UDM network element can determine the identifier of the second SMF network element that provides services to the second UE.
[0081] Subsequently, the UDM network element executes step 104, and the first SMF network element executes step 204. That is, the UDM network element sends UECM-related information to the first SMF network element, and the first SMF network element receives UECM-related information from the UDM network element.
[0082] For example, the UECM-related information is specific to the second UE. This UECM-related information may include the identifier of the second network function element (SMF) that provides services to the second UE. The UECM-related information can be carried in the "Nudm_UECM_Get_Response" message sent by the UDM element to the first SMF element.
[0083] After receiving information related to the UECM, the first SMF network element can interact with the second SMF network element based on the identifier of the second SMF network element included in the information, so that the first SMF network element and the second SMF network element can each associate the first PDU session with the second PDU session, thereby facilitating communication between the first UE and the second UE.
[0084] For example, the first UE and the second UE need to communicate, or the communication between the first UE and the second UE is interrupted and needs to be reconnected. In these scenarios, the first UE and the second UE respectively execute the PDU session establishment process (i.e., the first UE executes step 301, and the second UE executes step 302). Then, the first SMF network element executes steps 202 and 204 to obtain the identifier of the second SMF network element, and interacts with the second SMF network element according to the identifier of the second SMF network element. This enables the first SMF network element and the second SMF network element to associate the first PDU session with the second PDU session, thereby helping the first UE and the second UE to communicate faster and improving the user experience.
[0085] Figure 4 This is a schematic diagram of the structure of a data management network element according to some embodiments of the present disclosure.
[0086] like Figure 4 As shown, the data management network element 400 includes a receiving module 401 and a transmitting module 402.
[0087] The receiving module 401 can be configured to receive an acquisition request from a first network function element. Here, the acquisition request is used to obtain UECM-related information of the data management element. The first network function element is a network element other than the NEF element, SMSF element, GMLC element, and NWDAF element.
[0088] The sending module 402 can be configured to send information to the first network function element.
[0089] It should be understood that the data management network element 400 may also include various other modules to perform the operations performed by the data management network element in any of the above embodiments.
[0090] Figure 5 This is a schematic diagram of the structure of network functional elements according to some embodiments of the present disclosure.
[0091] like Figure 5 As shown, the network function element 500 includes a transmitting module 501 and a receiving module 502.
[0092] The sending module 501 can be configured to send an acquisition request to the data management network element. Here, the acquisition request is used to obtain UECM-related information of the data management network element. The first network function network element is a network element other than the NEF network element, SMSF network element, GMLC network element, and NWDAF network element.
[0093] The receiving module 502 can be configured to receive information from data management network elements.
[0094] The structure of the first network functional element mentioned above can be referred to Figure 5 The structure of the network function element 500 shown is illustrated. It should be understood that the network function element 500 may also include various other modules to perform the operations performed by the first network function element in any of the above embodiments.
[0095] Figure 6 This is a schematic diagram of the structure of an electronic device according to some embodiments of the present disclosure.
[0096] like Figure 6 As shown, the electronic device 600 includes a memory 601 and a processor 602 coupled to the memory 601. The processor 602 is configured to execute the information interaction method of any of the above embodiments based on instructions stored in the memory 601.
[0097] The memory 601 may include, for example, system memory, fixed non-volatile storage media, etc. The system memory may store, for example, an operating system, application programs, a boot loader, and other programs.
[0098] Electronic device 600 may also include input / output interface 603, network interface 604, storage interface 605, etc. These interfaces 603, 604, and 605, as well as the memory 601 and processor 602, can be connected via, for example, a bus 606. Input / output interface 603 provides a connection interface for input / output devices such as monitors, mice, keyboards, and touchscreens. Network interface 604 provides a connection interface for various networked devices. Storage interface 605 provides a connection interface for external storage devices such as SD cards and USB flash drives.
[0099] It should be understood that the electronic device 600 can be a data management network element or a first network function network element in any of the above embodiments.
[0100] Figure 7 This is a schematic diagram of the structure of an information interaction system according to some embodiments of the present disclosure.
[0101] like Figure 7As shown, the information interaction system includes a data management network element (e.g., data management network element 400) of any of the above embodiments, and a first network function network element (e.g., network function network element 500) of any of the above embodiments.
[0102] Other embodiments of this disclosure also provide an information interaction system, including an electronic device (e.g., electronic device 600) from any of the above embodiments. In some embodiments, the information interaction system includes a data management network element and a first network function network element, both of which include... Figure 6 The diagram shows a memory 601 and a processor 602 coupled to the memory 601. For example, the processor 602 in a data management network element is configured to execute instructions stored in the memory 601. Figure 1 The information interaction method shown; for example, the processor 602 in the first network function element is configured to execute instructions based on instructions stored in the memory 601. Figure 2 The information interaction method shown.
[0103] In some embodiments, the information interaction system further includes a second network function element from any of the above embodiments. The second network function element can be configured to send a registration request carrying UECM-related information to the data management network element 400, so that the data management network element 400, upon receiving an acquisition request from the first network function element, sends the UECM-related information to the first network function element.
[0104] This disclosure also provides a computer-readable storage medium including computer program instructions that, when executed by a processor, implement the information interaction method of any of the above embodiments.
[0105] This disclosure also provides a computer program product, including a computer program that, when executed by a processor, implements the information interaction method of any of the above embodiments.
[0106] The embodiments of this disclosure have now been described in detail. To avoid obscuring the concept of this disclosure, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.
[0107] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the embodiments of data management network elements, network function network elements, and information interaction systems, since they basically correspond to the information interaction method embodiments, the descriptions are relatively simple; relevant parts can be referred to the descriptions in the method embodiments.
[0108] Those skilled in the art will understand that embodiments of this disclosure can be provided as methods, systems, or computer program products. Therefore, this disclosure can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this disclosure can take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.
[0109] This disclosure is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It should be understood that the functions specified in one or more flowchart illustrations and / or one or more blocks in a block diagram can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate functions for implementing the functions in the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.
[0110] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.
[0111] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.
[0112] While specific embodiments of this disclosure have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of this disclosure. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this disclosure. The scope of this disclosure is defined by the appended claims.
Claims
1. An information exchange method, comprising: The data management network element receives an acquisition request from the first session management function network element. The acquisition request is used to acquire user equipment context management related information of the data management network element. The information includes the identifier of the second session management function network element. The first session management function network element and the second session management function network element belong to different core networks. The first session management function network element provides services to the first user equipment, and the second session management function network element provides services to the second user equipment that communicates with the first user equipment. The data management network element sends the information to the first session management function network element, so that the first session management function network element can interact with the second session management function network element based on the identifier in the information.
2. An information exchange method, comprising: The first session management function network element sends an acquisition request to the data management network element. The acquisition request is used to acquire information related to user equipment context management of the data management network element. The information includes the identifier of the second session management function network element. The first session management function network element and the second session management function network element belong to different core networks. The first session management function network element provides services to the first user equipment, and the second session management function network element provides services to the second user equipment that communicates with the first user equipment. The first session management function network element receives the information from the data management network element and interacts with the second session management function network element based on the identifier in the information.
3. The method according to claim 1 or 2, wherein, The data management network element and the first session management function network element belong to different core networks.
4. A data management network element, comprising: The receiving module is configured to receive an acquisition request from a first session management function network element. The acquisition request is used to acquire user equipment context management related information of the data management network element. The information includes the identifier of a second session management function network element. The first session management function and the second session management function network element belong to different core networks. The first session management function network element provides services to a first user equipment, and the second session management function network element provides services to a second user equipment that communicates with the first user equipment. The sending module is configured to send the information to the first session management function network element, so that the first session management function network element can interact with the second session management function network element based on the identifier in the information.
5. A network function element, wherein the network function element is a first session management function element, comprising: The sending module is configured to send an acquisition request to the data management network element. The acquisition request is used to acquire information related to the user equipment context management of the data management network element. The information includes the identifier of the second session management function network element. The first session management function network element and the second session management function network element belong to different core networks. The first session management function network element provides services to the first user equipment, and the second session management function network element provides services to the second user equipment that communicates with the first user equipment. The receiving module is configured to receive the information from the data management network element, so that the first session management function network element can interact with the second session management function network element based on the identifier in the information.
6. An electronic device, comprising: Memory; as well as A processor coupled to the memory is configured to execute the information interaction method of any one of claims 1-3 based on instructions stored in the memory.
7. An information interaction system, comprising: The data management network element as described in claim 4; as well as The network function element as described in claim 5.
8. An information interaction system, comprising: The electronic device according to claim 6.
9. A computer-readable storage medium comprising computer program instructions, wherein, When the computer program instructions are executed by the processor, they implement the method described in any one of claims 1-3.
10. A computer program product comprising a computer program, wherein, When the computer program is executed by a processor, it implements the method described in any one of claims 1-3.