CN115499894A

CN115499894A - Network slice adjusting method, device and equipment

Info

Publication number: CN115499894A
Application number: CN202211123405.5A
Authority: CN
Inventors: 俞一帆
Original assignee: Shenzhen Ailing Network Co ltd
Current assignee: Shenzhen Ailing Network Co ltd
Priority date: 2022-09-15
Filing date: 2022-09-15
Publication date: 2022-12-20

Abstract

The application provides a network slice adjusting method, a device and equipment, wherein the method comprises the following steps: the method comprises the steps that a network management server obtains equipment information of target equipment connected with terminal equipment, an identifier of a first network slice matched with the equipment information of the target equipment is determined, an identifier of a second network slice where a network session currently established by the terminal equipment is located is obtained, if the first network slice is different from the second network slice, a network slice adjusting request is sent to a network open function network element, the network open function network element responds to the network slice adjusting request and sends a signing data modifying request to a data management network element, so that the data management network element modifies the identifier of the second network slice in the signing data of the terminal equipment into the identifier of the first network slice, and the modified signing data are used for enabling the terminal equipment to release the network session from the second network slice and reestablish the network session in the first network slice. The network slice can be flexibly adjusted according to the connected equipment.

Description

Network slice adjusting method, device and equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method, an apparatus, and a device for adjusting a network slice.

Background

The fifth Generation Mobile Communication technology (5G) network slice divides a 5G physical network into a plurality of virtual networks, performs differentiated management on 5G network data, maintains logical independence between each virtual network, and can provide customized network services for different end users without adding a network architecture.

At present, for industrial internet scenes such as high-definition video real-time transmission, massive internet of things terminal access, low-delay precision control and the like, a 5G network can be virtually cut into a plurality of virtual networks with the characteristics of mobile bandwidth enhancement, massive internet of things, ultra-reliable low-delay communication and the like by using a 5G network slice. The virtual networks can bear services in different scenes, so that the differentiated requirements in different scenes are met.

However, the Network slice scheme based on the 5G public Network requires that the device is upgraded to a certain version, but is not well applied in an industrial scene, or a Data Network Name (DNN) is configured, but because the DNN configuration is controlled by an operator, it is difficult for a user to flexibly adjust the Network slice.

Disclosure of Invention

In view of this, embodiments of the present application provide a method, an apparatus, and a device for adjusting a network slice, so as to flexibly adjust the network slice.

In a first aspect, an embodiment of the present application provides a network slice adjusting method, which is applied to a network management server, and the method includes:

acquiring equipment information of target equipment connected with terminal equipment;

determining the identifier of a first network slice matched with the equipment information of the target equipment according to the equipment information of the target equipment;

acquiring an identifier of a second network slice where a network session currently established by the terminal equipment is located;

if the first network slice is different from the second network slice, sending a network slice adjustment request to a network open function (NEF) network element, so that the NEF network element responds to the network slice adjustment request to send a signing data modification request to a data management (UDM) network element, wherein the signing data modification request is used for enabling the UDM network element to modify the identifier of the second network slice in the signing data of the terminal equipment into the identifier of the first network slice;

the modified subscription data is used for enabling the terminal device to release the network session from the second network slice and reestablish the network session in the first network slice.

In an optional implementation manner, the obtaining an identifier of a second network slice in which a network session currently established by the terminal device is located includes:

sending a network slice query request to the NEF network element, wherein the network slice query request is used for enabling the NEF network element to query the identifier of the second network slice;

and receiving the identifier of the second network slice sent by the NEF network element.

In an optional implementation manner, the obtaining device information of a target device connected to a terminal device includes:

and receiving the equipment information of the target equipment sent by the terminal equipment through a gateway server.

In an optional embodiment, the method further comprises:

receiving an indication message that the subscription data is successfully modified and sent by the NEF network element;

and sending the network session reestablishment request to the terminal equipment according to the indication message that the subscription data is successfully modified, wherein the network session reestablishment request is used for enabling the terminal equipment to read the modified subscription data from the UDM network element, releasing the network session from the second network slice according to the modified subscription data, and reestablishing the network session in the first network slice.

In an optional implementation manner, the device information of the target device includes: a network address of the target device, the method further comprising:

receiving, by the gateway server, a device physical address of the target device sent by the terminal device, where the device physical address is a physical address obtained by the terminal device from the target device based on the network address;

and storing the network address and the device physical address.

In a second aspect, an embodiment of the present application further provides a network slice adjusting method, which is applied to a network open function NEF network element, and the method includes:

receiving a network slice adjusting request sent by a network management server, wherein the network slice adjusting request is as follows: a network slice adjustment request sent by the network management server when the first network slice and the second network slice are different; the first network slice is a network slice matched with the device information of the target device connected with the terminal device, and the second network slice is a network slice where the network session currently established by the terminal device is located;

responding to the network slice adjustment request, and sending a signing data modification request to a data management (UDM) network element so that the UDM network element modifies the identifier of the second network slice in the signing data of the terminal equipment into the identifier of the first network slice;

In an optional implementation manner, before the receiving the network slice adjustment request sent by the network management server, the method further includes:

responding to a network slice query request sent by the network management server, and querying the identifier of the second network slice;

sending an identification of the second network slice to the network management server.

In an optional embodiment, the network slice adjustment request includes: device information of the target device and an identification of the first network slice;

the sending a subscription data modification request to a data management UDM network element in response to the network slice adjustment request includes:

responding to the network slice adjustment request, sending a network identifier query request of the target device to a Session Management Function (SMF) network element, wherein the network identifier query request is used for enabling the SMF network element to query a network identifier of the target device according to the device information of the target device;

receiving a network identifier of the target equipment sent by the SMF network element;

sending the subscription data modification request to the UDM network element, wherein the subscription data modification request comprises: the subscription data modification request is used for enabling the UDM network element to determine subscription data of the terminal equipment according to the network identifier, and modifying the identifier of the second network slice in the subscription data of the terminal equipment into the identifier of the first network slice.

In an optional embodiment, the method further comprises:

receiving an indication message that the subscription data is successfully modified and sent by the UDM network element;

and sending an indication message that the subscription data is successfully modified to the network management server, so that the network management server sends a network session reestablishment request to the terminal device, where the network session reestablishment request is used to enable the terminal device to read the modified subscription data from the UDM network element, release the network session from the second network slice according to the modified subscription data, and reestablish the network session in the first network slice. The method comprises the following steps:

in a third aspect, an embodiment of the present application further provides a network slice adjusting apparatus, including:

the acquisition module is used for acquiring the equipment information of the target equipment connected with the terminal equipment;

the determining module is used for determining the identifier of the first network slice matched with the equipment information of the target equipment according to the equipment information of the target equipment;

the obtaining module is further configured to obtain an identifier of a second network slice where a network session currently established by the terminal device is located;

a sending module, configured to send a network slice adjustment request to a NEF network element of a network open function if the first network slice and the second network slice are different, so that the NEF network element sends a subscription data modification request to a data management UDM network element in response to the network slice adjustment request, where the subscription data modification request is used for enabling the UDM network element to modify an identifier of the second network slice in subscription data of the terminal device into an identifier of the first network slice;

In a fourth aspect, an embodiment of the present application further provides a network slice adjusting apparatus, including:

a receiving module, configured to receive a network slice adjustment request sent by a network management server, where the network slice adjustment request is: a network slice adjustment request sent by the network management server when the first network slice and the second network slice are different; the first network slice is a network slice matched with the equipment information of the target equipment connected with the terminal equipment, and the second network slice is a network slice where a network session currently established by the terminal equipment is located;

a sending module, configured to send, in response to the network slice adjustment request, a subscription data modification request to a data management UDM network element, so that the UDM network element modifies an identifier of the second network slice in the subscription data of the terminal device to an identifier of the first network slice;

In a fifth aspect, an embodiment of the present application further provides an electronic device, including: a processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor, when the electronic device runs, the processor and the memory communicate with each other through the bus, and the processor executes the machine-readable instructions to execute the network slice adjusting method according to any one of the first aspect.

In a sixth aspect, an embodiment of the present application further provides an electronic device, including: a processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor, the processor and the memory communicate with each other through the bus when the electronic device runs, and the processor executes the machine-readable instructions to execute the network slice adjusting method according to any one of the second aspect.

In a seventh aspect, this application embodiment further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the method for adjusting network slices according to any one of the first and second aspects is performed.

The application provides a network slice adjusting method, a device and equipment, wherein the method comprises the following steps: the method comprises the steps that a network management server obtains equipment information of target equipment connected with terminal equipment, an identifier of a first network slice matched with the equipment information of the target equipment is determined according to the equipment information of the target equipment, the network management server obtains an identifier of a second network slice where a network session currently established by the terminal equipment is located, if the first network slice is different from the second network slice, a network slice adjusting request is sent to a NEF network element, the NEF network element responds to the network slice adjusting request and sends a signing data modifying request to a UDM network element so that the UDM network element modifies the identifier of the second network slice in signing data of the terminal equipment into the identifier of the first network slice, and the modified signing data are used for enabling the terminal equipment to release the network session from the second network slice and reestablish the network session in the first network slice. The network slice can be flexibly adjusted according to the connected equipment.

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

To more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

Fig. 1 is a schematic diagram of a system architecture of a network slice adjustment method according to an embodiment of the present application;

fig. 2 is a first flowchart illustrating a network slice adjustment method according to an embodiment of the present disclosure;

fig. 3 is a second flowchart illustrating a network slice adjusting method according to an embodiment of the present disclosure;

fig. 4 is a third schematic flowchart of a network slice adjustment method according to an embodiment of the present application;

fig. 5 is a fourth flowchart illustrating a network slice adjusting method according to an embodiment of the present disclosure;

fig. 6 is a fifth flowchart illustrating a network slice adjustment method according to an embodiment of the present application;

fig. 7 is a first schematic structural diagram of a network slice adjusting apparatus according to an embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of a network slice adjustment apparatus according to an embodiment of the present application;

fig. 9 is a first schematic structural diagram of an electronic device according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a second electronic device according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.

A fifth Generation Mobile Communication technology (5G) local network is also called private 5G network, and it uses 5G technology to create a private network on the local user site, which has uniform connectivity, optimized service and secure Communication mode in a specific area, and provides high transmission speed, low delay and massive connection supported by 5G technology.

The 5G local network is constructed based on 5G equipment, and comprises 5G terminal equipment, 5G wireless base stations and 5G core network equipment, wherein the equipment is exclusive to a network owner, namely a local user, and can be independently managed and easily deployed. The 5G home network may eliminate reliance on wired devices such as ethernet, which are expensive and bulky and cannot connect large numbers of mobile devices and people.

The 5G home network may be configured locally and the network is fully controlled by the network owner, e.g. security, network resource usage, etc. The network owner may assign a higher priority to key devices to use network resources.

In an Industrial Internet of Things (IIoT) scenario, sensors will be installed in the factory to monitor environmental conditions, support quality control and custom manufacturing. Through the 5G local network, the data of the sensors can be collected and analyzed, and the information of various aspects of factory operation can be mastered in a refined manner. The analysis result can be transmitted to the intelligent robot through the 5G local network, and product manufacturing or factory goods transportation is supported; with the aid of the 5G local network, workers can wear the lightweight augmented reality equipment and complete equipment operation through a virtual environment.

The method for adjusting the Network slices aims to solve the problems that Equipment is required to be upgraded to a certain version but is not well applied in an industrial scene or special Data Network Names (DNN) are configured but the DNN configuration is controlled by an operator, so that a User is difficult to flexibly adjust the Network slices.

Before introducing the present application, an application scenario of the embodiment of the present application is first described, and the technical solution of the embodiment of the present application may be applied to various communication systems, for example: fifth generation (5 th generation, 5G) communication systems or future new radio access technology (NR), etc.

Fig. 1 is a schematic diagram of a system architecture of a network slice adjustment method according to an embodiment of the present disclosure.

As shown in fig. 1, the system architecture may include:

1. terminal equipment (user equipment, UE): also referred to as user equipment, terminal, access terminal, subscriber unit, subscriber station, mobile, remote station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or user device. The UE may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with a wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a 5G network or a terminal device in a Public Land Mobile Network (PLMN) for future evolution, and the like, and may also be an end device, a logic entity, an intelligent device, a terminal device such as a mobile phone or an intelligent terminal, or a communication device such as a server, a gateway, a base station, a controller, and the like, or an Internet of things device, an Internet of things (IoT) device such as a sensor, an electric meter, a water meter, and the like. The embodiments of the present application do not limit this.

2. Access Network (AN): the method provides a network access function for authorized users in a specific area, and can use transmission tunnels with different qualities according to the level of the users, the requirements of services and the like. The access network may be an access network employing different access technologies. There are two types of current radio access technologies: third Generation Partnership project (3 GPP) access technologies such as those employed in 3G, 4G or 5G systems and non-third Generation Partnership project (non-3 GPP) access technologies. The 3GPP Access technology refers to an Access technology meeting 3GPP standard specifications, and an Access Network adopting the 3GPP Access technology is referred to as a Radio Access Network (RAN), where an Access Network device in a 5G system is referred to as a next generation Base station (gNB). The non-3GPP access technology refers to an access technology that does not conform to the 3GPP standard specification, for example, an air interface technology represented by an Access Point (AP) in wifi.

An access network that implements an access network function based on a wireless communication technology may be referred to as a Radio Access Network (RAN), where NG-RAN stands for a 5G access network. The radio access network can manage radio resources, provide access service for the terminal, and further complete the forwarding of control signals and user data between the terminal and the core network.

The access network equipment may include, among other things, equipment in the access network that communicates over the air-interface, through one or more sectors, with the wireless terminals. The access network system may be configured to interconvert received air frames with Internet Protocol (IP) packets as routers between the wireless terminal and the rest of the access network, which may include an IP network. The radio access network system may also coordinate attribute management for the air interface. It should be understood that access network devices include, but are not limited to: an evolved Node B (eNB), a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a Home Base Station (e.g., home evolved NodeB, or Home NodeB, HNB), a baseband Unit (Base Band, BBU), an Access Point (AP) in a Wireless Fidelity (WIFI) system, a Wireless relay Node, a Wireless backhaul Node, a Transmission Point (TP), etc., and may also be 5G, such as NR, a gbb in a system, or a transmission Point (TRP or TP), one or a group of (including multiple antennas) antennas of a Base Station in a 5G system, or may also constitute a transmission panel (NB), or a distributed baseband Unit (BBU), such as a distributed baseband Unit (NB), etc.

In some deployments, the gNB may include a Centralized Unit (CU) and a DU. The gNB may also include a Radio Unit (RU). The CU implements part of the function of the gNB, and the DU implements part of the function of the gNB, for example, the CU implements Radio Resource Control (RRC) and Packet Data Convergence Protocol (PDCP) layers, and the DU implements Radio Link Control (RLC), medium Access Control (MAC) and Physical (PHY) layers. Since the information of the RRC layer eventually becomes the information of the PHY layer or is converted from the information of the PHY layer, under this architecture, higher layer signaling, such as RRC layer signaling, can also be considered to be transmitted by the DU or by the DU + CU. It is to be understood that the access network device may be a CU node, or a DU node, or a device comprising a CU node and a DU node. In addition, the CU may be divided into access network devices in an access network (RAN), or may be divided into access network devices in a Core Network (CN), which is not limited herein.

3. An Access and Mobility Management Function (AMF) network element, which is a termination of an RAN signaling interface (N2) and a termination of an MM message interface (N1) of non-Access stratum (NAS) signaling, includes the following main functions: the encryption and integrity protection of the NAS message are responsible for functions of registration, access, mobility management, authentication, short messages and the like.

4. A Session Management Function (SMF) network element, which is a termination point of an SM message of an NAS message, and has main functions including: the method includes establishing, modifying and releasing a Session (Session), allocating and managing an Internet Protocol Address (IP) of a UE, configuring a Dynamic Host Configuration Protocol (DHCP) Function, an Address Resolution Protocol (ARP) proxy or an Internet Protocol Version 6 (ipv 6) neighbor request proxy in a Protocol Data Unit (PDU) scenario, selecting and controlling a User Port Function (UPF) for a Session, collecting and supporting a charging interface, determining a Session and Service Continuity Mode (SSC) of a Session, and indicating downlink Data.

5. A User Plane management Function (UPF) network element, mainly comprising: packet routing forwarding, quality of Service (QoS) flow mapping, session points at which external PDUs interconnect with the data network, packet routing and forwarding, e.g., supporting uplink classifiers to route traffic flows to instances of the data network, branch points to support multi-homed PDU sessions, packet inspection, e.g., application flow detection based on Service data flow templates and optional PFDs received from SMFs, user plane partial policy rule enforcement, e.g., gating, redirection, traffic steering, lawful interception (UP collection), traffic usage reporting, qoS processing for the user plane, e.g., upload (Upload, UL)/Download (DL) rate enforcement, reflected QoS tags in DL), uplink traffic verification (e.g., traffic flow (SDF) to QoS mapping traffic), transport level packet tagging in uplink and downlink, downlink packet buffering and downlink data notification triggering, sending and forwarding one or more "end tags" NG to source-RAN nodes.

6. A Policy Control Function (PCF) Network element, which supports a unified Policy framework and manages Network behavior, provides Policy rules to a Network entity, accesses subscription information of a Unified Data Repository (UDR), and the PCF can only access the UDR of the same Public Land Mobile Network (PLMN) as the PCF, and can also be used for packet routing and forwarding, or quality of service (QoS) processing of user plane Data, etc.

7. A Network element of a Network Exposure Function (NEF), the Network element mainly including: the 3GPP Network element presents the capability of the Network element to other Network elements through the NEF, the NEF stores relevant information into the UDR and can also acquire relevant information from the UDR, wherein the NEF can only access the UDR of the same PLMN as the NEF and provide corresponding security guarantee to ensure the security of external application to the 3GPP Network and the conversion of the internal and external relevant information of the 3GPP, such as the conversion of AF-Service-Identifier and Data Network Name (DNN) and S-NSSAI and the like in a 5G core Network, especially the conversion of Network and user sensitive information must be hidden from the external Network element, the NEF can acquire the relevant information of other Network elements through accessing the UDR, and the NEF can only access the UDR of the same PLMN as the NEF.

8. A network storage function (NF) relocation function (NRF) network element, the network element having: the method supports the service Discovery function, that is, receives a service Discovery Request (NF-Discovery-Request) sent by a network element, and then provides the discovered network element information to a requesting party, maintains the characteristics of available network element instances and the service capabilities supported by the network element instances, wherein the characteristic parameters of one network element mainly include: the IDentifier includes an Identity (ID) of a Network element Instance, a Network element type, a PLMN, and a related ID of a Network segment, such as Single Network Slice Selection auxiliary Information (S-NSSAI), a Network Slice Instance IDentifier (NSIID), an IP or domain name of the Network element, capability Information of the Network element, a service capability name supported, and the like.

9. A Unified Data Manager (UDM) network element having the main functions of: generating a 3GPP authentication certificate/authentication parameter, storing and managing a Permanent user ID of the 5G system, such as a user Permanent Identifier (SUPI), subscription information management, mobile authorization-Short Messaging Service (MT-SMS) delivery, SMS management, and Service network element registration management of a user, such as AMF, SMF, etc., which currently provides a Service for a terminal.

10. An Authentication Server Function (AUSF) network element supporting Authentication of 3GPP access and Authentication of trusted non-3GPP (unlicensed non3 GPP) access.

11. An Application Function (AF) network element, configured to perform application-influenced data routing, access a network element with an open network function, or perform policy control by interacting with a policy framework.

12. A Network Slice Selection Function (NSSF) Network element configured to manage Network Slice related information.

It should be noted that the N1 interface is a reference point between the UE and the AMF network element; the N2 interface is a reference point of NG-RAN and AMF network elements and is used for sending NAS information and the like; the N3 interface is a reference point between the NG-RAN and the UPF entity and is used for transmitting data of a user plane and the like; the N4 interface is a reference point between the SMF network element and the UPF network element, and is used to transmit information such as tunnel identifier information, data cache indicator information, and downlink data notification message for the N3 connection; the N5 interface is a reference point between the UPF network element and the gateway server.

The Nnef interface is a service access interface provided by the AMF network element; the Nnrf interface is a service access interface provided by the NRF network element; the Npef interface is a service access interface provided by the PCF network element to the outside; the Nudm interface is a service access interface provided by the UDM network element; the Naf interface is a service access interface provided by the AF network element; the Nausf interface is a service access interface provided by the AUSF network element; the Namf interface is a service access interface provided by the AMF network element; the Nsmf interface is a service access interface provided by the SMF network element; the NSSF interface is a service access interface externally provided by the NSSF network element.

It should be understood that the above-described architecture applied to the embodiments of the present application is only an example of a network architecture described in terms of a conventional point-to-point architecture and a service architecture, and the network architecture to which the embodiments of the present application are applied is not limited thereto, and any network architecture capable of implementing the functions of the above-described network elements is applicable to the embodiments of the present application. It should be understood that the above network elements may communicate with each other through a preset interface, which is not described herein again.

It should also be understood that the network elements in the core network shown in fig. 1 for implementing different functions may be combined into network slices, for example, as desired. The core network elements may be independent devices, or may be integrated in the same device to implement different functions, which is not limited in this application.

It should be understood that the above-mentioned names are only used for distinguishing different functions, and do not represent that these network elements are separate physical devices, and the present application is not limited to the specific form of the above-mentioned network elements, for example, the network elements may be integrated in the same physical device, or may be different physical devices. Furthermore, the above nomenclature is only used to distinguish between different functions, and should not be construed as limiting the application in any way, and this application does not exclude the possibility of other nomenclature being used in 5G networks and other networks in the future. For example, in a 6G network, some or all of the above network elements may follow the terminology in 5G, and may also adopt other names, etc. The description is unified here, and will not be repeated below.

It should also be understood that the name of the interface between each network element in fig. 1 is only an example, and the name of the interface in the specific implementation may be other names, which is not specifically limited in this application. In addition, the name of the transmitted message (or signaling) between the network elements is only an example, and the function of the message itself is not limited in any way.

In addition, the system architecture further comprises: industrial equipment, a gateway server, an industrial application server and a network management server, wherein the network management server can be a 5G local network management server.

In the system, an industrial application server is accessed to a gateway server, the gateway server is connected with a 5G network through a UPF network element, industrial equipment is connected with the 5G network through UE, and data connection is established with the gateway server through the 5G network; the gateway server assists the industrial equipment to complete data interaction with the industrial application server and the network management server; and the 5G local network management server writes the network slice configuration information into the UDM network element through the NEF network element.

In a possible application scenario, the industrial device may be a sensor device, and may be configured to collect environmental information in an industrial environment, where the environmental information may be, for example, a plant environment video, a plant environment image, a plant environment temperature and humidity, and the like, the industrial device may send the environmental information to the UE, and the UE sends the environmental information to the industrial application server through the gateway server via the 5G network, so that an engineer may obtain the environmental information in the industrial environment from the industrial application server, and perform operation guidance on workers in the plant based on the environmental information, for example, guide the workers to carry articles and the like.

In the data transmission process, a network slice used by the UE can be determined based on equipment information of the industrial equipment, in the application, the equipment information of the industrial equipment is sent to a 5G local network management server by the UE, the 5G local network management server determines available network slice configuration according to the equipment information reported by the UE, a network slice adjusting instruction is packaged into user signed data, the user signed data is sent to the UDM through the 5G local network management server through NEF, and after the user signed data in the UDM is changed, PDU session change is triggered, so that the UE can establish a new PDU session on the adjusted network slice, namely data transmission is carried out on the adjusted network slice, the 5G network can bear services under different scenes, and the difference under different scenes is met.

The technical scheme of the application has the following characteristics:

(1) The process of adjusting the network slices according to different service requirements under the 5G local network environment is simplified; the terminal can call the network slicing capability without upgrading to the R16 version or configuring a special DNN.

(2) The method can flexibly meet different scene requirements, and network slice distribution and configuration can be carried out aiming at specific services without a network administrator mastering a complex 5G network signaling configuration flow; the network administrator only needs to set a corresponding service mapping relation and a network slicing requirement in the 5G local network management server in advance according to the service requirement, and then network slicing management can be completed; the terminal can automatically detect the connected industrial equipment and automatically transmit the associated data on the designated network slice, and the process does not need manual intervention.

The network slice adjusting method provided by the present application is described below with reference to several specific embodiments.

Fig. 2 is a first schematic flow chart of a network slice adjustment method according to an embodiment of the present disclosure, as shown in fig. 2, the method may include:

s101, the network management server acquires the device information of the target device connected with the terminal device.

The target device may be an industrial device connected with the terminal device in a wired or wireless manner, for example, a sensor device, and is configured to collect environmental information of an environment where the target device is located.

The device information of the target device may include a network Address of the target device, such as an Internet Protocol Address (IP), and the terminal device may obtain the device information of the target device and report the device information to the network management server.

In an optional implementation manner, acquiring device information of a target device connected to a terminal device includes: and receiving the equipment information of the target equipment sent by the terminal equipment through the gateway server.

The gateway server is used for assisting the target device to complete data interaction with the network management server, that is, the terminal device is in communication connection with the gateway server, the gateway server is in communication connection with the network management server, the terminal device can automatically detect the connected target device and send an acquisition request to the target device to acquire device information of the target device, and the device information of the target device can be sent to the network management server through the gateway server.

S102, the network management server determines the identifier of the first network slice matched with the device information of the target device according to the device information of the target device.

The network management server may determine, according to the device information of the target device, an identifier of a first network slice matched with the device information of the target device, where the network management server may query preconfigured network slice information by using the device information of the target device as an index to determine the identifier of the first network slice matched with the device information of the target device.

Wherein, the preset network slice information comprises: the device information of a plurality of devices and the identifier of the network slice matched with the device information, that is, the device information and the network slice have a mapping relationship, the device information of a corresponding service terminal and the mapping relationship of the network slice can be configured on a network management server in advance according to service requirements, so that the network slice management can be completed, and the network slice is used for enabling the corresponding device to establish a network session so as to realize data interaction on the corresponding network slice, wherein the network session can be a PDU session.

For example, the concrete expression of the network slice information may be < slice ID, IP address >, the slice ID represents the identification of the network slice, and the device information of the target device may be the IP address of the target device.

If the network management server does not inquire the identifier of the first network slice matched with the device information of the target device, the operation flow may be ended.

S103, the network management server obtains the identifier of the second network slice where the network session currently established by the terminal equipment is located.

And S104, if the first network slice is different from the second network slice, the network management server sends a network slice adjustment request to the NEF network element, so that the NEF network element sends a signing data modification request to the UDM network element in response to the network slice adjustment request.

The identifier of the second network slice may be a network slice in which the network session currently established by the terminal device is located, that is, the network session currently established is established on the second network slice.

The network management server obtains a second network slice, and determines whether the first network slice is the same as the second network slice, if the first network slice is different from the second network slice, the network management server may send a network slice adjustment request to the NEF network element, so that the NEF network element responds to the network slice adjustment request, and sends a subscription data modification request to the UDM network element, where the subscription data modification request is used to make the UDM network element modify an identifier of the second network slice in the subscription data of the terminal device into an identifier of the first network slice, where the subscription data may include: an identification of a network slice in which a network session of the terminal device is located.

If the first network slice and the second network slice are the same, the network slice does not need to be adjusted.

And S105, the NEF network element responds to the network slice adjusting request and sends a signing data modifying request to the UDM network element so that the UDM network element modifies the identifier of the second network slice in the signing data of the terminal equipment into the identifier of the first network slice.

Correspondingly, the NEF network element receives a network slice adjustment request sent by the network management server, where the network slice adjustment request is: and the network management server sends a network slice adjustment request when a first network slice and a second network slice are different, wherein the first network slice is a network slice matched with the device information of the target device connected with the terminal device, and the second network slice is a network slice where a network session currently established by the terminal device is located.

And the NEF network element responds to the network slice adjustment request and sends a signing data modification request to the UDM network element, and the UDM network element is used for modifying the identifier of the second network slice in the signing data of the terminal equipment into the identifier of the first network slice.

The modified subscription data is used for enabling the terminal device to release the network session from the second network slice and reestablish the network session in the first network slice, where the modified subscription data may include: and after the UDM network element modifies the subscription data, the terminal equipment can read the modified subscription data from the UDM network element so as to release the network session from the second network slice and reestablish the network session in the first network slice.

In the network slice adjustment method of this embodiment, a first network slice that matches may be determined according to device information of a target device to which a terminal is connected, and when a second network slice in which a network session currently established by the terminal device is located is different from the first network slice, the network session is released from the second network slice through a network slice adjustment instruction, and the network session is reestablished in the first network slice. The process does not need manual intervention, and simplifies the process of adjusting the network slices according to different service requirements under the 5G local network environment; the terminal can realize the calling of the network slice capability without upgrading to the R16 version and configuring a special DNN, can flexibly meet the requirements of different scenes, and can carry out network slice distribution and configuration aiming at specific services without a network administrator to master a complex 5G network signaling configuration flow; the network administrator only needs to set corresponding service mapping relation and network slicing requirements in the 5G local network management server in advance according to service requirements, and then network slicing management can be completed.

A method for obtaining the identifier of the second network slice is described below with reference to the embodiment of fig. 3.

Fig. 3 is a second flowchart of a network slice adjustment method provided in an embodiment of the present application, and as shown in fig. 2, the acquiring, by a network management server, an identifier of a second network slice in which a network session currently established by a terminal device is located may include:

s201, the network management server sends a network slice query request to the NEF network element.

Wherein the network slice query request is used for enabling the NEF network element to query the identifier of the second network slice.

If the network management server queries the identifier of the first network slice matched with the device information of the target device, a network slice query request may be sent to the NEF network element to request the NEF to query the identifier of the second network slice, where the network slice adjustment request may include: device information of the target device, such as an IP address.

And S202, the NEF network element responds to the network slice query request sent by the network management server and queries the identifier of the second network slice.

For the NEF network element, before receiving the network slice adjustment request sent by the network management server, the NEF network element may further receive a network slice query request sent by the network management server, and query the identifier of the second network slice in response to the network slice query request.

After receiving the network slice query request, the NEF network element may send a network slice query request to the SMF, and after receiving the network slice query request, the SMF may query pre-stored network slice information of the current network session to obtain an identifier of a second network slice where the network session currently established by the terminal device is located, where the network slice information of the current network session may be: the identifier of the network slice where the plurality of currently established network sessions are located, and the corresponding device information.

And S203, the NEF network element sends the identifier of the second network slice to the network management server.

And the NEF network element sends the inquired identifier of the second network slice to the network management server, and correspondingly, the network management server receives the identifier of the second network slice sent by the NEF network element.

An implementation manner of sending the subscription data modification request is described below with reference to the embodiment of fig. 4.

Fig. 4 is a third schematic flowchart of a network slice adjustment method provided in an embodiment of the present application, and as shown in fig. 4, the sending, by an NEF network element, a subscription data modification request to a data management UDM network element in response to a network slice adjustment request may include:

s301, the NEF network element responds to the network slice adjustment request and sends a network identifier query request of the target equipment to the SMF network element.

S302, the NEF network element receives the network identifier of the target equipment sent by the SMF network element.

The NEF network element may send, to the SMF network element, a network identifier query request of the target device in response to the network slice adjustment request, where the network identifier query request is used to enable the SMF network element to query, according to the device information of the target device, the network identifier of the target device, and the network slice adjustment request includes: device information of the target device and an identification of the first network slice.

After the SMF network element queries the network identifier of the target device according to the device information of the target device, the network identifier of the target device is sent to the NEF network element, and accordingly the NEF network element receives the network identifier of the target device sent by the SMF network element.

The network Identifier of the target device may be a subscriber Permanent Identifier (SUPI).

And S303, the NEF network element sends a signing data modification request to the UDM network element.

The NEF network element sends a subscription data modification request to the UDM network element, wherein the subscription data modification request comprises: a network identifier and an identification of the first network slice.

The subscription data modification request is used for enabling the UDM network element to determine the subscription data of the terminal device according to the network identifier, and modifying the identifier of the second network slice in the subscription data of the terminal device into the identifier of the first network slice, that is, after receiving the subscription data modification request, the UDM firstly determines the subscription data of the terminal device according to the network identifier, and then modifies the subscription data of the terminal device so as to modify the identifier of the second network slice into the identifier of the first network slice.

Fig. 5 is a fourth schematic flowchart of a network slice adjustment method provided in an embodiment of the present application, where as shown in fig. 5, after the NEF network element sends a subscription data modification request to the data management UDM network element in response to the network slice adjustment request, the method may further include:

s401, the NEF network element receives the indication message that the subscription data is successfully modified and sent by the UDM network element.

S402, the NEF network element sends the indication message of successful subscription data modification to the network management server, so that the network management server sends a network session reestablishment request to the terminal equipment.

After the UDM network element completes the subscription data of the terminal device, the UDM network element may send an indication message that the subscription data is successfully modified to the NEF network element, and accordingly, the NEF network element receives the indication message that the subscription data is successfully modified and sent by the UDM network element, and forwards the indication message that the subscription data is successfully modified to the network management server, so that the network management server sends a network session reestablishment request to the terminal device.

And S403, the network management server sends a network session reestablishment request to the terminal equipment according to the indication message that the subscription data is successfully modified.

And the network management server receives the indication message of successful subscription data modification sent by the NEF network element and sends a network session reestablishment request to the terminal equipment according to the indication message of successful subscription data modification, wherein the network session reestablishment request is used for enabling the terminal equipment to read the modified subscription data from the UDM network element, release the network session from the second network slice according to the modified subscription data and reestablish the network session in the first network slice.

That is to say, after receiving a network session reestablishment request from the network management server, the terminal device initiates a network session release procedure to release the network session from the second network slice, and after the session release procedure is completed, reads the modified subscription data from the UDM network element, and initiates a network session establishment procedure to reestablish the network session on the first network slice, where the modified subscription data includes: identification of a first network slice.

Fig. 6 is a flowchart of a fifth method for adjusting a network slice according to an embodiment of the present disclosure, and as shown in fig. 6, the method may further include:

s501, the network management server receives the device physical address of the target device sent by the terminal device through the gateway server.

S502, the network management server stores the network address and the device physical address.

Wherein the device information of the target device includes: the network address of the target device, which may be, for example, an IP address.

In order to implement data communication between different devices, each device needs to know a physical device physical Address of another device performing data communication, and the device physical Address may be a Media Access Control Address (MAC).

The device physical address is a physical address acquired by the terminal device from the target device based on the network address, and the terminal device may send a device physical address acquisition request to the target device to acquire the device physical address of the target device, where the device physical address acquisition request includes: the IP Address of the target device and the device physical Address obtaining request may be Address Resolution Protocol (ARP) requests.

The terminal device sends the device physical address of the target device to the network management server through the gateway server, and the network management server can store the device information and the device physical address of the target device, so that when the subsequent target device performs data communication with other devices, the other devices acquire the device physical address of the target device from the network management server based on the device information of the target device.

It should be noted that the number of target devices connected to the terminal device includes, but is not limited to, one, and if the number of target devices is multiple, multiple ARP requests may be sent to multiple target devices, where each ARP request includes: the method comprises the steps of obtaining equipment information of one target device, receiving a plurality of ARP responses sent by the target devices, extracting corresponding equipment physical addresses from the ARP responses, and reporting the equipment physical addresses to a network management server, wherein in order to reduce reporting frequency, the terminal device can report the equipment physical addresses extracted from the ARP responses to the network management server in a unified mode.

On the basis of the foregoing embodiment, the following describes in detail a network slice adjustment method provided by the present application, where the method includes the following steps:

1. and after the UE is started, initiating a PDU session establishment flow to complete the establishment of the PDU session with the UPF network element.

2. After the UE completes the PDU session establishment, an acquisition request is sent to the 5G local network management server according to the IP address of the pre-configured 5G local network management server, so as to acquire the equipment information of the industrial equipment deployed in the 5G local network, such as the IP address of the industrial equipment.

3. And after the UE acquires the equipment information of the industrial equipment, initiating a tunnel establishment process with the gateway server according to the pre-configured IP address of the gateway server to complete the tunnel establishment. Wherein, the tunnel between UE and gateway server includes: vxLAN tunnel and GRETAP tunnel.

4. After the UE completes the establishment of the tunnel, the identification information of the industrial equipment connected with the UE is periodically detected, wherein the identification information comprises the MAC address of the industrial equipment.

The UE sends an ARP request on an Ethernet interface connected with the industrial equipment according to the acquired IP address of the industrial equipment, and acquires a corresponding MAC address through an ARP response received from the interface.

5. The UE extracts the MAC address in the ARP response and sends it to the 5G local network management server.

In order to reduce the reporting frequency, the UE can report the IP addresses extracted from multiple ARP responses to the 5G local network management server in a unified manner.

6. And the 5G local network management server searches the pre-configured network slice information by taking the IP address of the industrial equipment reported by the UE as an index. The concrete expression form of the network slice configuration information is as follows: < slice ID, IP address >.

7. And if the 5G local network management server does not inquire the matched configuration information record, ending the operation flow.

8. And if the 5G local network management server inquires the matched configuration information record, initiating an inquiry request to the NEF network element by taking the IP address of the UE as an index so as to obtain the network slice ID where the PDU session currently established by the UE is located.

9. And after receiving the request, the NEF network element initiates a request to the SMF network element by taking the IP address of the UE as an index so as to acquire the network slice ID where the PDU session currently established by the UE is located.

10. And after receiving the request, the SMF network element returns the network slice ID where the PDU session currently established by the UE is located to the NEF network element.

11. And after receiving the network slice ID information fed back by the SMF network element, the NEF network element returns the network slice ID where the PDU session currently established by the UE is located to the 5G local network management server.

12. And the 5G local network management server compares the network slice ID returned by the NEF with the slice ID inquired locally, if the network slice ID is the same as the slice ID, the operation flow is ended, and if the network slice ID is different from the slice ID, the 5G local network management server sends a network slice adjusting request to the NEF.

13. The 5G local network management server sends a network slice adjustment request to the NEF, and writes the IP address of the UE and the network slice ID needing to be adjusted into the adjustment request.

14. After receiving the network slice adjustment request, the NEF network element initiates a query request to the SMF by taking the IP address of the UE as an index so as to acquire the SUPI information of the UE.

15. And the SMF network element returns the SUPI information of the UE to the NEF network element.

16. And the NEF network element takes the SUPI information of the UE as an index, initiates a UE subscription data modification request to the UDM network element and requires to establish the PDU session of the UE on the network slice with the specified ID. The specified network slice ID is the network slice ID notified by the 5G local network management server.

17. And the UDM network element receives the UE subscription data modification request sent by the NEF network element, modifies the UE subscription data, and informs the NEF network element of the successful modification response.

18. And after receiving the response that the UE subscription data is successfully modified, the NEF network element returns the response that the UE subscription data is successfully modified to the 5G local network management server.

19. And after receiving the response of successful modification of the subscription data of the UE, the 5G local network management server informs the UE to reestablish the PDU session.

20. And after receiving the PDU session reestablishment request from the 5G local network management server, the UE initiates a PDU session release flow to the 5G local network.

21. And after the PDU session release process is finished, the UE initiates a PDU session establishment process to the 5G local network so as to finish the establishment of the PDU session with the UPF network element.

22. And in the PDU session establishment process, the SMF network element reads the updated UE subscription data from the UDM network element.

23. And after the PDU session establishment process is completed, the UE performs data transmission on the network slice with the specified ID.

Based on the same inventive concept, the embodiment of the present application further provides a network slice adjusting device corresponding to the network slice adjusting method, and since the principle of solving the problem of the device in the embodiment of the present application is similar to that of the network slice adjusting method in the embodiment of the present application, the implementation of the device can refer to the implementation of the method, and repeated details are not repeated.

Fig. 7 is a schematic structural diagram of a first network slice adjusting apparatus according to an embodiment of the present application, where the apparatus may be implemented by the network management server, and as shown in fig. 7, the apparatus may include:

an obtaining module 601, configured to obtain device information of a target device connected to a terminal device;

a determining module 602, configured to determine, according to the device information of the target device, an identifier of a first network slice matched with the device information of the target device;

the obtaining module 601 is further configured to obtain an identifier of a second network slice where a network session currently established by the terminal device is located;

a sending module 603, configured to send a network slice adjustment request to a NEF network element with a network open function if the first network slice and the second network slice are different, so that the NEF network element sends a subscription data modification request to a UDM network element in response to the network slice adjustment request, where the subscription data modification request is used for causing the UDM network element to modify an identifier of the second network slice in subscription data of the terminal device into an identifier of the first network slice;

the modified subscription data is used to cause the terminal device to release the network session from the second network slice and reestablish the network session at the first network slice.

In an optional implementation manner, the obtaining module 601 is specifically configured to:

and receiving the identification of the second network slice sent by the NEF network element.

and receiving the equipment information of the target equipment sent by the terminal equipment through the gateway server.

In an optional embodiment, the apparatus further comprises:

a receiving module 604, configured to receive an indication message that subscription data sent by an NEF network element is successfully modified;

a sending module 603, configured to send a network session reestablishment request to the terminal device according to the indication message that the subscription data is successfully modified, where the network session reestablishment request is used to enable the terminal device to read the modified subscription data from the UDM network element, release the network session from the second network slice according to the modified subscription data, and reestablish the network session in the first network slice.

In an optional implementation manner, the device information of the target device includes: the network address of the target device, the receiving module 604, is further configured to:

receiving a device physical address of target equipment sent by the terminal equipment through a gateway server, wherein the device physical address is a physical address obtained by the terminal equipment from the target equipment based on a network address;

a storage module 605, configured to store the network address and the device physical address.

The description of the processing flow of each module in the device and the interaction flow between the modules may refer to the related description in the above method embodiments, and will not be described in detail here.

Fig. 8 is a schematic structural diagram of a second network slice adjustment apparatus provided in the embodiment of the present application, where the apparatus may be implemented by the NEF network element, and as shown in fig. 8, the apparatus may include:

a receiving module 701, configured to receive a network slice adjustment request sent by a network management server, where the network slice adjustment request is: a network slice adjusting request sent by the network management server when the first network slice and the second network slice are different; the first network slice is a network slice matched with the equipment information of the target equipment connected with the terminal equipment, and the second network slice is a network slice where a network session currently established by the terminal equipment is located;

a sending module 702, configured to send a signing data modification request to a data management UDM network element in response to a network slice adjustment request, so that the UDM network element modifies an identifier of a second network slice in the signing data of the terminal device into an identifier of a first network slice;

In an optional embodiment, the apparatus further comprises:

the query module 703 is configured to query, in response to a network slice query request sent by the network management server, an identifier of a second network slice;

the sending module 702 is further configured to send the identifier of the second network slice to the network management server.

the sending module 702 is specifically configured to:

responding to the network slice adjustment request, sending a network identifier query request of the target equipment to a Session Management Function (SMF) network element, wherein the network identifier query request is used for enabling the SMF network element to query the network identifier of the target equipment according to the equipment information of the target equipment;

receiving a network identifier of a target device sent by an SMF network element;

sending a signing data modification request to a UDM network element, wherein the signing data modification request comprises: the subscription data modification request is used for enabling the UDM network element to determine subscription data of the terminal equipment according to the network identifier and modify the identifier of a second network slice in the subscription data of the terminal equipment into the identifier of the first network slice.

In an optional implementation, the receiving module 701 is further configured to:

receiving an indication message of successful subscription data modification sent by a UDM network element;

the sending module 702 is further configured to send an indication message indicating that the subscription data is successfully modified to the network management server, so that the network management server sends a network session reestablishment request to the terminal device, where the network session reestablishment request is used to enable the terminal device to read the modified subscription data from the UDM network element, release the network session from the second network slice according to the modified subscription data, and reestablish the network session in the first network slice.

Fig. 9 is a first schematic structural diagram of an electronic device according to an embodiment of the present application, where the electronic device may be implemented by using the network management server. As shown in fig. 9, the apparatus may include: a processor 801, a memory 802 and a bus 803, wherein the memory 802 stores a computer program executable by the processor 801, when the electronic device runs, the processor 801 communicates with the memory 802 through the bus 803, and the processor 801 executes the computer program to execute the network slice adjusting method executed by the network management server.

Fig. 10 is a schematic structural diagram of a second electronic device according to an embodiment of the present application, where the device may be implemented by using the NEF network element. As shown in fig. 10, the apparatus may include: a processor 901, a memory 902 and a bus 903, where the memory 902 stores a computer program executable by the processor 901, when the electronic device runs, the processor 901 communicates with the memory 902 through the bus 903, and the processor 901 executes the computer program to execute the network slice adjusting method executed by the NEF network element.

An embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and the computer program is executed when executed by a processor, where the processor executes the network slice adjusting method executed by the network management server or the network slice adjusting method executed by the NEF network element in the foregoing method embodiment.

In the embodiments of the present application, when being executed by a processor, the computer program may further execute other machine-readable instructions to perform other methods as described in the embodiments, and for details of the method steps and principles of the specific execution, reference is made to the description of the embodiments and detailed descriptions are omitted here.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments provided in the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus once an item is defined in one figure, it need not be further defined and explained in subsequent figures, and moreover, the terms "first", "second", "third", etc. are used merely to distinguish one description from another and are not to be construed as indicating or implying relative importance.

Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present application, and are used for illustrating the technical solutions of the present application, but not limiting the same, and the scope of the present application is not limited thereto, and although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope disclosed in the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the present disclosure, which should be construed in light of the above teachings. Are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A network slice adjusting method is applied to a network management server, and comprises the following steps:

acquiring equipment information of target equipment connected with the terminal equipment;

determining the identifier of the first network slice matched with the equipment information of the target equipment according to the equipment information of the target equipment;

2. The method of claim 1, wherein the obtaining the identifier of the second network slice in which the network session currently established by the terminal device is located comprises:

3. The method of claim 1, wherein the obtaining device information of a target device connected to a terminal device comprises:

4. The method of claim 1, further comprising:

5. A network slice adjusting method is applied to a network open function (NEF) network element, and the method comprises the following steps:

receiving a network slice adjusting request sent by a network management server, wherein the network slice adjusting request is as follows: a network slice adjustment request sent by the network management server when the first network slice and the second network slice are different; the first network slice is a network slice matched with the equipment information of the target equipment connected with the terminal equipment, and the second network slice is a network slice where a network session currently established by the terminal equipment is located;

6. The method of claim 5, wherein before receiving the network slice adjustment request sent by the network management server, the method further comprises:

7. The method of claim 5, wherein the network slice adjustment request comprises: device information of the target device and an identification of the first network slice;

receiving a network identifier of the target device sent by the SMF network element;

8. A network slice adjustment apparatus, comprising:

the determining module is used for determining the identifier of the first network slice matched with the device information of the target device according to the device information of the target device;

the acquisition module is further configured to acquire an identifier of a second network slice where a network session currently established by the terminal device is located;

9. A network slice adjustment apparatus, comprising:

a receiving module, configured to receive a network slice adjustment request sent by a network management server, where the network slice adjustment request is: a network slice adjustment request sent by the network management server when the first network slice and the second network slice are different; the first network slice is a network slice matched with the device information of the target device connected with the terminal device, and the second network slice is a network slice where the network session currently established by the terminal device is located;

10. An electronic device, comprising: a processor, a memory and a bus, the memory storing a computer program executable by the processor, the processor and the memory communicating via the bus when the electronic device is running, the processor executing the computer program to perform the network slice adjustment method of any one of claims 1-4 or 5-7.