Acquisition method and apparatus for subscription data

Abstract

Provided in the embodiments of the present disclosure are an acquisition method and apparatus for subscription data. The method is applied to a network data unit of a visited domain, and comprises: receiving a data acquisition request which is sent by a network control unit of a visited domain; sending a subscription request to a network data unit of a home domain, and receiving subscription data which is fed back by the network data unit of the home domain and corresponds to data feature information, wherein the subscription request carries data feature information of the visited domain, and the subscription request is used for acquiring data and a subscription data change; storing the subscription data and the data feature information in a local memory in an associated manner, and then acquiring, from the local memory, subscription data requested by the network control unit of the visited domain; and feeding the subscription data back to the network control unit of the visited domain. The problem in the related art of it being impossible to realize intra-domain data autonomy due to the fact that the acquisition of subscription data needs signaling interaction with a data management function of a home domain may be solved.

Description

Method and device for obtaining contract data

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure is based on Chinese patent application CN2023118703354, filed on December 29, 2023, entitled “A method and device for obtaining contract data”, and claims the priority of the patent application, and all the contents disclosed therein are incorporated into this disclosure by reference. Technical Field

[0003] The present disclosure relates to the field of communication technology, and in particular to a method and device for acquiring contract data. Background Art

[0004] In a mobile communication network, user home domain subscription common data such as data in Unified Data Management (UDM) and policy data such as data in Policy Control Function (PCF) are uniformly stored and managed in the home domain.

[0005] When a user obtains contract information in the home domain, he specifies which type of contract data or which types of contract data to obtain through signaling messages. The data management function in the network control unit filters, combines and processes the contract data according to needs and returns it to the service management function of the network control unit.

[0006] Figure 1 is a schematic diagram of a method for obtaining subscription data in the related art. As shown in Figure 1, when a user moves to a visited domain, the network control unit of the visited domain obtains subscription information from the home domain via signaling messages. The data management function in the network control unit of the home domain processes the subscription data as required and returns it to the network control unit of the visited domain.

[0007] 6G realizes distributed autonomy with data as the center. User-signed general data and policy data can be directly and quickly transmitted across domains, realizing data autonomy within the distributed autonomous domain.

[0008] The existing method of obtaining contract information requires the data management function of the home domain to participate in the refined data management of other domains. Any operation of contract data must interact with the home domain through signaling, which cannot meet the data autonomy requirements within the distributed autonomous domain.

[0009] There is no solution to the problem in related technologies that the acquisition of contract data requires signaling interaction with the data management function of the home domain and cannot achieve data autonomy within the domain.

[0010] Summary of the Invention

[0011] The embodiments of the present disclosure provide a method and apparatus for acquiring subscription data, so as to at least solve the problem in related technologies that the acquisition of subscription data requires signaling interaction with the data management function of the home domain and cannot achieve data autonomy within the domain.

[0012] According to one embodiment of the present disclosure, a method for acquiring subscription data is provided, which is applied to a network data unit of a visited domain. The method includes: receiving a data acquisition request sent by a network control unit of the visited domain; sending a subscription request to a network data unit of a home domain, and receiving subscription data corresponding to data feature information fed back by the network data unit of the home domain, wherein the subscription request carries the data feature information of the visited domain, and the subscription request is used to acquire data and subscribe to data changes; associating the subscription data with the data feature information and storing them in a local memory, and then acquiring the subscription data requested by the network control unit of the visited domain from the local memory; and feeding back the subscription data to the network control unit of the visited domain.

[0013] According to another embodiment of the present disclosure, a method for obtaining subscription data is also provided, which is applied to a network control unit of a visited domain. The method includes: sending a data acquisition request to a network data unit of the visited domain; receiving subscription data obtained and fed back by the network data unit of the visited domain from a local memory, wherein the subscription data is the subscription data corresponding to data feature information fed back by the network data unit of the home domain after the network data unit of the visited domain sends a subscription request to the network data unit of the home domain, and the subscription data is associated with the data feature information and stored in the local memory, the subscription request carries the data feature information of the visited domain, and the subscription request is used to obtain data and subscribe to data changes.

[0014] According to another embodiment of the present disclosure, a device for acquiring subscription data is also provided, which is applied to a network data unit of a visited domain, and the device includes: a first receiving module, configured to receive a data acquisition request sent by a network control unit of a visited domain; a first sending module, configured to send a subscription request to a network data unit of a home domain, wherein the subscription request carries data feature information of the visited domain, and the subscription request is used to acquire data and subscribe to data changes; a second receiving module, configured to receive the subscription data corresponding to the data feature information fed back by the network data unit of the home domain; a storage and acquisition module, configured to associate the subscription data with the data feature information and store them in a local memory, and then obtain the subscription data requested by the network control unit of the visited domain from the local memory; and a second sending module, configured to feed back the subscription data to the network control unit of the visited domain.

[0015] According to another embodiment of the present disclosure, a computer-readable storage medium is provided, in which a computer program is stored. The computer program is configured to execute the steps of any one of the above method embodiments when running.

[0016] According to another embodiment of the present disclosure, an electronic device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to perform the steps in any one of the above method embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] FIG1 is a schematic diagram of a method for acquiring contract data in the related art;

[0018] FIG2 is a hardware structure block diagram of a computer device for a method for obtaining contract data according to an embodiment of the present disclosure;

[0019] FIG3 is a flowchart of a method for acquiring contract data according to an embodiment of the present disclosure;

[0020] FIG4 is a second flowchart of a method for acquiring contract data according to an embodiment of the present disclosure;

[0021] FIG5 is a block diagram 1 of a system for acquiring contract data according to an embodiment of the present disclosure;

[0022] FIG6 is a second block diagram of a system for acquiring contract data according to an embodiment of the present disclosure;

[0023] FIG7 is a third block diagram of a system for acquiring contract data according to an embodiment of the present disclosure;

[0024] FIG8 is a fourth block diagram of a system for acquiring contract data according to an embodiment of the present disclosure;

[0025] FIG9 is a fifth block diagram of a system for acquiring contract data according to an embodiment of the present disclosure;

[0026] FIG10 is a block diagram of a system for acquiring contract data according to an embodiment of the present disclosure;

[0027] FIG11 is a block diagram of a system for acquiring contract data according to an embodiment of the present disclosure;

[0028] FIG12 is a block diagram of a device for acquiring contract data according to an embodiment of the present disclosure;

[0029] FIG13 is a second block diagram of the device for acquiring contract data according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0030] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings and in conjunction with embodiments.

[0031] It should be noted that the terms "first", "second", etc. in the specification and claims of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0032] The method embodiments provided in the embodiments of the present disclosure can be executed in a computer device or a similar computing device. Taking operation on a computer device as an example, Figure 2 is a hardware structure block diagram of a computer device for the method for obtaining contract data in an embodiment of the present disclosure. As shown in Figure 2, the computer device may include one or more (only one is shown in Figure 2) processors 202 (the processor 202 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device) and a memory 204 for storing data, wherein the above-mentioned computer device may also include a transmission device 206 and an input and output device 208 for communication functions. It can be understood by those skilled in the art that the structure shown in Figure 2 is only for illustration and does not limit the structure of the above-mentioned computer device. For example, the computer device may also include more or fewer components than those shown in Figure 2, or have a configuration different from that shown in Figure 2.

[0033] The memory 204 can be used to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the method for obtaining contract data in the embodiment of the present disclosure. The processor 202 executes various functional applications and single-board matching by running the computer program stored in the memory 204, that is, implementing the above-mentioned method. The memory 204 may include a high-speed random access memory and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 204 may further include a memory remotely located relative to the processor 202, and these remote memories may be connected to the computer device via a network. Examples of the above-mentioned network include but are not limited to the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0034] Transmission device 206 is used to receive or send data via a network. Specific examples of the aforementioned network may include a wireless network provided by a communications provider of a computer device. In one embodiment, transmission device 206 may include a network interface controller (NIC), which can be connected to other network devices via a base station to enable communication with the Internet. In another embodiment, transmission device 206 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0035] In this embodiment, a method for acquiring subscription data running on the aforementioned computer device is provided. FIG3 is a flowchart of the method for acquiring subscription data according to an embodiment of the present disclosure. As shown in FIG3 , the method is applied to a network data unit of a visited domain. The specific process includes the following steps:

[0036] Step S302: receiving a data acquisition request sent by a network control unit of the visited domain;

[0037] Step S304: Send a subscription request to the network data unit of the home domain, and receive subscription data corresponding to the data feature information fed back by the network data unit of the home domain, wherein the subscription request carries the data feature information of the visited domain, and the subscription request is used to obtain data and subscribe to data changes;

[0038] Step S306: associate the subscription data with the data feature information and store them in a local memory, and then obtain the subscription data requested by the network control unit of the visited domain from the local memory;

[0039] Step S308: Feedback the subscription data to the network control unit of the visited domain.

[0040] Through the above steps S302 to S308, the problem in related technologies that the acquisition of contract data requires signaling interaction with the data management function of the home domain and cannot achieve data autonomy within the domain can be solved, thereby achieving data autonomy within the domain and ensuring data isolation and data security.

[0041] Specifically, the existing technology is driven by service signaling. According to different scenarios, the network data unit selects an appropriate data set, processes it, and then transmits it to the network control unit. In particular, when cross-domain access occurs, the network control unit of the home domain needs to participate in the selection or customization of the network data unit, and domain autonomy cannot be achieved. The embodiment of the present disclosure is data-centric, with the network data unit managing data and providing different data according to the characteristics of the service. The network data unit does not simply store data, but classifies the data according to data characteristics and stores it according to templates. When there is a request to query data, the stored data is integrated according to the characteristic information carried in the request, and all information or instructions that meet the characteristics are returned. This not only satisfies the data acquisition request, but also achieves the effect of data isolation, avoids exposing excessive information, and improves data security. When cross-domain access occurs, the network data unit of the visited domain carries the data characteristics of the visited domain and subscribes to the data of the visited domain from the network data unit of the home domain. After obtaining the data of the visited domain, the network data unit of the visited domain completes the data autonomy within the domain, which can achieve data autonomy within the distributed autonomous domain and ensure data isolation and data security.

[0042] In one embodiment, before sending the subscription request to the network data unit of the home domain, the method further includes:

[0043] If the subscription data requested by the network control unit of the visited domain exists in the local memory, the subscription data is directly fed back to the network control unit of the visited domain.

[0044] In one embodiment, the method further comprises:

[0045] The network data unit of the visited domain receives a request for changing subscription data sent by the network control unit of the visited domain;

[0046] The network data unit of the visited domain receives the changed subscription data fed back by the network data unit of the home domain, and feeds back the changed subscription data to the network control unit of the visited domain.

[0047] The present disclosure also provides a method for acquiring subscription data. FIG4 is a second flowchart of the method for acquiring subscription data according to an optional embodiment of the present disclosure. As shown in FIG4 , the method is applied to a network control unit of a visited domain. The specific process includes the following steps:

[0048] Step S402: Send a data acquisition request to the network data unit of the visited domain;

[0049] Step S404: Receive subscription data obtained and fed back by the network data unit of the visited domain from the local memory, wherein the subscription data is the subscription data corresponding to data feature information fed back by the network data unit of the home domain after the network data unit of the visited domain sends a subscription request to the network data unit of the home domain. The subscription data is stored in the local memory in association with the data feature information. The subscription request carries the data feature information of the visited domain, and the subscription request is used to obtain data and subscribe to data changes.

[0050] Through the above steps S402 to S404, the problem in related technologies that the acquisition of contract data requires signaling interaction with the data management function of the home domain and cannot achieve data autonomy within the domain can be solved, thereby achieving data autonomy within the domain and ensuring data isolation and data security.

[0051] In one embodiment, the method further comprises:

[0052] Sending a request for subscription data change to a network data unit of the visited domain;

[0053] Receive changed subscription data fed back by the network data unit of the visited domain, wherein the changed subscription data is fed back by the network data unit of the home domain after the network data unit of the visited domain sends the subscription request to the network data unit of the home domain.

[0054] The present disclosure also provides a subscription data acquisition system. FIG5 is a block diagram of the subscription data acquisition system according to the present disclosure. As shown in FIG5 , the system includes: a visited domain network control unit 52, a visited domain network data unit 54, a home domain network data unit 56, and a home domain network data unit 58, wherein:

[0055] The network control unit 52 of the visited domain is used to send a data acquisition request to the network data unit of the visited domain;

[0056] a visited domain network data unit 54, configured to receive the data acquisition request sent by the visited domain network control unit, and send a subscription request to the home domain network data unit, wherein the subscription request carries data feature information of the visited domain, and the subscription request is used to obtain data and subscribe to data changes;

[0057] a home domain network data unit 58, configured to receive the subscription request sent by the visited domain network data unit, obtain the subscription data corresponding to the data characteristic information from a local memory, and feed the subscription data corresponding to the data characteristic information back to the visited domain network data unit, wherein the subscription data and the data characteristic information are stored in association in the local memory;

[0058] The visited domain network data unit 54 is further configured to receive the subscription data corresponding to the data feature information fed back by the home domain network data unit, associate the subscription data with the data feature information and store it in a local memory, then retrieve the subscription data requested by the visited domain network control unit from the local memory, and feed the subscription data back to the visited domain network control unit.

[0059] The network control unit 52 of the visited domain is further configured to receive the subscription data fed back by the network data unit.

[0060] Through the above system, the problem in the related art that the acquisition of contract data requires signaling interaction with the data management function of the home domain and the autonomy of the data within the domain cannot be achieved can be solved, thereby achieving data autonomy within the domain and ensuring data isolation and data security. Specifically, the existing technology is driven by business signaling. According to different scenarios, the network data unit selects a suitable data set, which is processed and then passed to the network control unit. Especially when cross-domain access occurs, the network control unit of the home domain needs to participate in the selection or customization of the network data unit, and autonomy within the domain cannot be achieved. The embodiment of the present disclosure is data-centric, and the network data unit manages the data and provides different data according to the characteristics of the business. The network data unit does not only store the data, but classifies the data according to the data characteristics and stores it in a template manner; when there is a request to query data, the stored data is integrated according to the characteristic information carried in the request, and all information or instructions that meet the characteristics are returned, which not only meets the data acquisition request, but also achieves the effect of data isolation, avoids exposing too much information, and improves data security. When cross-domain access occurs, the network data unit of the visited domain carries the data characteristics of the visited domain and subscribes to the data of the visited domain from the network data unit of the home domain. After obtaining the data of the visited domain, the network data unit of the visited domain completes the data autonomy within the domain.

[0061] In one embodiment, the network data unit 54 of the visited domain is further configured to, before sending the subscription request to the network data unit of the home domain, directly feed back the subscription data requested by the network control unit of the visited domain to the network control unit of the visited domain if the subscription data requested by the network control unit of the visited domain exists in the local memory.

[0062] The present disclosure also provides a subscription data acquisition system. FIG6 is a block diagram of the subscription data acquisition system according to the present disclosure. As shown in FIG6 , the system includes: a visited domain network control unit 52, a visited domain network data unit 54, a home domain network data unit 56, and a home domain network data unit 58, wherein:

[0063] The network control unit 52 of the visited domain is configured to send a subscription request for subscription data change to the network data unit 54 of the visited domain;

[0064] The network data unit 54 of the visited domain is configured to receive the subscription request for the subscription data change sent by the network control unit 52;

[0065] The network data unit 58 of the home domain is configured to feed back the changed subscription data to the network data unit 54 of the visited domain when the subscription subscription data changes;

[0066] The network data unit 54 of the visited domain is further configured to receive the changed subscription data fed back by the network data unit 58 of the home domain, and feed back the changed subscription data to the network control unit 52 of the visited domain;

[0067] The network control unit 52 of the visited domain is further configured to receive the changed subscription data fed back by the network data unit 54 of the visited domain.

[0068] The present disclosure also provides a system for acquiring subscription data. FIG7 is a block diagram of the system for acquiring subscription data according to the present disclosure. As shown in FIG7 , in the case of non-cross-domain access, the system includes: a network control unit 52 and a network data unit 54, wherein:

[0069] The network control unit 52 is configured to send a data acquisition request to the network data unit 54, wherein the data acquisition request includes data feature information;

[0070] The network data unit 54 is configured to receive the data acquisition request sent by the network control unit 52; directly obtain the contract data corresponding to the data feature information from the local memory according to the data acquisition request, wherein the contract data and the data feature information are stored in association with each other in the local memory; and feed the contract data back to the network control unit 52;

[0071] The network control unit 52 is further configured to receive the subscription data fed back by the network data unit 54 .

[0072] The system of the disclosed embodiment is data-centric, and the network data unit manages the data and provides different data according to the characteristics of the business. The network data unit not only stores the data, but also classifies the data according to the data characteristics and stores it in a template manner. When there is a request to query data, the stored data is integrated according to the characteristic information carried in the request, and all information or instructions that meet the characteristics are returned, which not only meets the data acquisition request, but also achieves the effect of data isolation, avoids exposing too much information, and improves data security.

[0073] In an embodiment of the present disclosure, in the above-mentioned contract data acquisition system, the network control unit is a unified aggregated network control function entity, including at least one of the following: Access and Mobility Management Function (AMF), Session Management Function (SMF), Network Exposure Function (NEF), and Policy Control Function PCF and Unified Data Management UDM logical processing parts in the 5G network; the network data unit is a unified aggregated data plane, including at least one of the following: static contract data and Unified Data Repository (UDR) of the Policy Control Function PCF and Unified Data Management UDM in the 5G network.

[0074] In the embodiment of the present disclosure, the contract data includes at least one of the following: contract general data and contract policy data.

[0075] In order to facilitate the understanding of the technical solutions provided by the present disclosure, a description will be given below in conjunction with specific embodiments.

[0076] FIG8 is a fourth block diagram of a system for acquiring subscription data according to an optional embodiment of the present disclosure. As shown in FIG8 , the system includes: a network control unit 52 for a visited domain, a network data unit 54 for a visited domain, a network data unit 56 for a home domain, and a network data unit 58 for a home domain. The network control unit 52 for the visited domain includes AMF1 and UDM1, the network data unit 54 for the visited domain includes UDR1, the network data unit 56 for the home domain includes AMF2 and UDM2, and the network data unit 58 for the home domain includes UDR2. The specific process for acquiring user subscription general information through the visited domain includes the following steps:

[0077] Step S801: A user goes online in a visited domain and obtains subscription information from a visited domain UDM1 through the visited domain AMF1.

[0078] Step S802: Visited domain UDM1 obtains the user's subscription data from visited domain UDR1 and subscribes to change notifications.

[0079] Step S803: The visited domain UDR1 carries the data characteristics of the visited domain and subscribes to the data of the visited domain from the home domain UDR2.

[0080] Step S804: The home domain UDR2 returns the subscription data of the visited domain according to the data characteristics of the visited domain, and adds it to the subscription list.

[0081] Step S805: The visited domain UDR1 records the returned data locally and returns the subscription data of the user to the visited domain UDM1.

[0082] Step S806: The visited domain UDM1 processes the visited domain data according to the specific data requirements of the visited domain AMF1.

[0083] In step S807, the visited domain UDM1 returns the processed data to the visited domain AMF1 for use, and the user goes online.

[0084] FIG9 is a fifth block diagram of a system for acquiring subscription data according to an optional embodiment of the present disclosure. As shown in FIG9 , the system includes: a network control unit 52 for a visited domain, a network data unit 54 for a visited domain, a network data unit 56 for a home domain, and a network data unit 58 for a home domain. The network control unit 52 for the visited domain includes AMF1 and UDM1, the network data unit 54 for the visited domain includes UDR1, the network data unit 56 for the home domain includes AMF2 and UDM2, and the network data unit 58 for the home domain includes UDR2. The specific process for acquiring changes to user subscription general information via the visited domain includes the following steps:

[0085] Step S901: The visited domain AMF1 subscribes to the subscription data change from the visited domain UDM1.

[0086] Step S902: After the home domain subscription data is changed, the home domain UDR2 synchronously pushes the changed data containing the visited domain characteristics to the visited domain UDR1.

[0087] Step S903: The visited domain UDR1 notifies the visited domain UDM1 of the data change.

[0088] Step S904: The visited domain UDM1 processes the data.

[0089] Step S905: The visited domain UDM1 triggers a data change event to the visited domain AMF1 according to the specific data change. The visited domain AMF1 performs different business processing according to the changed data.

[0090] FIG10 is a block diagram of a subscription data acquisition system according to an embodiment of the present disclosure. As shown in FIG10 , the system includes: a visited domain network control unit 52, a visited domain network data unit 54, a home domain network data unit 56, and a home domain network data unit 58. The visited domain network control unit 52 includes SMF1 and PCF1, the visited domain network data unit 54 includes UDR1, the home domain network data unit 56 includes SMF2 and PCF2, and the home domain network data unit 58 includes UDR2. The specific process of acquiring user subscription policy information through the visited domain includes the following steps:

[0091] Step S1001: A user goes online in a visited domain and obtains subscription policy information from a visited domain PCF1 through the visited domain SMF1.

[0092] Step S1002: Visited domain PCF1 obtains the user's subscription policy data from visited domain UDR1 and subscribes to change notifications.

[0093] Step S1003: The visited domain UDR1 carries the data characteristics of the visited domain and subscribes to the data of the visited domain from the home domain UDR2.

[0094] Step S1004: The home domain UDR2 returns the subscription data of the visited domain UDR1 according to the data characteristics of the visited domain, and adds it to the subscription list.

[0095] Step S1005 , the visited domain UDR1 records the returned data locally and returns the subscription policy data of the user to the visited domain PCF1 .

[0096] Step S1006: The visited domain PCF1 processes the data of the visited domain according to the specific data requirements of the visited domain SMF1.

[0097] Step S1007: The visited domain PCF1 returns the processed data to the visited domain SMF1 for use, and the user goes online.

[0098] Figure 11 is a seventh block diagram of a system for acquiring subscription data according to an optional embodiment of the present disclosure. As shown in Figure 11, the system includes: a network control unit 52 for a visited domain, a network data unit 54 for a visited domain, a network data unit 56 for a home domain, and a network data unit 58 for a home domain. The network control unit 52 for the visited domain includes AMF1 and UDM1, the network data unit 54 for the visited domain includes UDR1, the network data unit 56 for the home domain includes AMF2 and UDM2, and the network data unit 58 for the home domain includes UDR2.

[0099] As shown in Figure 11, the process of obtaining user subscription policy change information through the visited domain includes the following steps:

[0100] Step S1101: After the HDN subscription policy data is changed, the HDN UDR2 synchronously pushes the changed data containing the VDN characteristics to the VDN UDR1.

[0101] Step S1102: Visited domain UDR1 notifies visited domain PCF1 of the policy data change.

[0102] Step S1103: The visited domain PCF1 processes the data.

[0103] Step S1104: The visited domain PCF1 triggers a data change event to the visited domain SMF1 according to the specific data change. The visited domain SMF1 performs different service processing according to the changed data.

[0104] This embodiment further provides a device for acquiring subscription data, which is applied to a network data unit in a visited domain. FIG12 is a block diagram of the device for acquiring subscription data according to an embodiment of the present disclosure. As shown in FIG12 , the device includes:

[0105] A first receiving module 122 is configured to receive a data acquisition request sent by a network control unit of a visited domain;

[0106] A first sending module 124 is configured to send a subscription request to a network data unit of a home domain, wherein the subscription request carries data feature information of a visited domain, and the subscription request is used to obtain data and subscribe to data changes;

[0107] The second receiving module 126 is configured to receive the subscription data corresponding to the data feature information fed back by the network data unit of the home domain;

[0108] a storage and acquisition module 128 configured to associate the subscription data with the data feature information and store them in a local memory, and then acquire the subscription data requested by the network control unit of the visited domain from the local memory;

[0109] The second sending module 129 is configured to feed back the subscription data to the network control unit of the visited domain.

[0110] This embodiment further provides a device for acquiring subscription data, which is applied to a network data unit. FIG13 is a second block diagram of the device for acquiring subscription data according to an embodiment of the present disclosure. As shown in FIG13 , the device includes:

[0111] A sending module 132 is configured to send a data acquisition request to a network data unit of a visited domain;

[0112] The receiving module 134 is configured to receive subscription data obtained and fed back by the network data unit of the visited domain from the local memory, wherein the subscription data is the subscription data corresponding to data feature information fed back by the network data unit of the home domain after the network data unit of the visited domain sends a subscription request to the network data unit of the home domain. The subscription data is stored in the local memory in association with the data feature information, wherein the subscription request carries the data feature information of the visited domain, and the subscription request is used to obtain data and subscribe to data changes.

[0113] An embodiment of the present disclosure further provides a computer-readable storage medium, in which a computer program is stored. The computer program is configured to execute the steps of any one of the above method embodiments when run.

[0114] In an exemplary embodiment, the computer-readable storage medium may include, but is not limited to, various media that can store computer programs, such as a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk, or an optical disk.

[0115] An embodiment of the present disclosure further provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to perform the steps in any of the above method embodiments.

[0116] In an exemplary embodiment, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor, and the input / output device is connected to the processor.

[0117] For specific examples in this embodiment, reference may be made to the examples described in the above embodiments and exemplary implementation modes, and this embodiment will not be described in detail here.

[0118] Obviously, those skilled in the art should understand that the modules or steps of the present disclosure described above can be implemented using a general-purpose computing device, they can be concentrated on a single computing device, or distributed across a network composed of multiple computing devices, they can be implemented using program code executable by the computing device, and thus, they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be performed in a different order than herein, or they can be fabricated into separate integrated circuit modules, or multiple modules or steps can be fabricated into a single integrated circuit module for implementation. Thus, the present disclosure is not limited to any particular combination of hardware and software.

[0119] The foregoing description is merely a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. Those skilled in the art will readily appreciate that various modifications and variations of the present disclosure are possible. Any modifications, equivalent substitutions, or improvements made within the principles of the present disclosure shall be included within the scope of protection of the present disclosure.

Claims

1. A method for obtaining subscription data, which is applied to a network data unit in a visited domain, includes: Receiving a data acquisition request sent by a network control unit in the visited domain; Sending a subscription request to a network data unit in the home domain and receiving the subscription data corresponding to the data feature information fed back by the network data unit in the home domain, where the subscription request carries the data feature information in the visited domain, and the subscription request is used to obtain data and subscribe to data changes; Associatively storing the subscription data and the data feature information in a local memory, and then obtaining the subscription data requested by the network control unit in the visited domain from the local memory; Feeding back the subscription data to the network control unit in the visited domain.

2. The method according to claim 1, wherein, Before sending the subscription request to the network data unit in the home domain, the method further includes: When the subscription data requested by the network control unit in the visited domain exists in the local memory, directly feeding back the subscription data to the network control unit in the visited domain.

3. The method according to claim 1, wherein, The method further includes: Receiving a request for subscribing to changes in subscription data sent by the network control unit in the visited domain; Receiving the changed subscription data fed back by the network data unit in the home domain, and feeding back the changed subscription data to the network control unit in the visited domain.

4. A method for obtaining subscription data, which is applied to a network control unit in a visited domain, wherein, Includes: Sending a data acquisition request to a network data unit in the visited domain; Receiving the subscription data obtained from and fed back by the local memory by the network data unit in the visited domain, where the subscription data is associatively stored in the local memory after the network data unit in the visited domain sends a subscription request to the network data unit in the home domain and receives the subscription data corresponding to the data feature information fed back by the network data unit in the home domain, the subscription request carries the data feature information in the visited domain, and the subscription request is used to obtain data and subscribe to data changes.

5. The method according to claim 4, wherein, The method further includes: Sending a request for subscribing to changes in subscription data to the network data unit in the visited domain; Receiving the changed subscription data fed back by the network data unit in the visited domain, where the changed subscription data is fed back by the network data unit in the home domain after the network data unit in the visited domain sends the subscription request to the network data unit in the home domain.

6. The method according to any one of claims 1 to 5, wherein The subscription data includes at least one of the following: subscription general data and subscription policy data.

7. The method according to any one of claims 1 to 5, wherein The network control unit is a unified aggregated network control function entity, including at least one of the following: the access and mobility management function AMF, session management function SMF, network exposure function NEF, and the logical processing parts of the policy control function PCF and unified data management UDM in a 5G network; the network data unit is a unified aggregated data plane, including at least one of the following: the static subscription data of the policy control function PCF and unified data management UDM, and unified data repository UDR in a 5G network.

8. An apparatus for obtaining subscription data, which is applied to a network data unit in a visited domain, includes: A first receiving module configured to receive a data acquisition request sent by a network control unit in the visited domain; A first sending module, configured to send a subscription request to a network data unit in a home domain, where the subscription request carries data feature information of a visited domain, and the subscription request is used to obtain data and subscribe to data changes; A second receiving module, configured to receive the subscribed data corresponding to the data feature information fed back by the network data unit in the home domain; A storage and acquisition module, configured to associatively store the subscribed data and the data feature information in a local memory, and then acquire the subscribed data requested by a network control unit in the visited domain from the local memory; A second sending module, configured to feed back the subscribed data to the network control unit in the visited domain.

9. A computer-readable storage medium storing a computer program therein, wherein, When the computer program is executed by a processor, the steps of the method described in any one of claims 1 to 7 are implemented.

10. An electronic device, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein, When the processor executes the computer program, the steps of the method described in any one of claims 1 to 7 are implemented.

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