Network node determination method and device and storage medium

Abstract

The embodiment of the invention provides a network node determination method and device and a storage medium. The method comprises the following steps: acquiring QoS characteristic information from a QoS guarantee center; and determining a first radio access network RAN and a first network node according to the QoS characteristic information and the demand characteristic information of the terminal. According to the embodiment of the invention, the QoS guarantee problem of the service under the distributed network is effectively solved, so that the QoS guarantee requirements of the terminal under different network nodes are met.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a method, device and storage medium for determining a network node. Background Art

[0002] The trend of future 6G networks is a decentralized hierarchical network with centralized and distributed collaboration. 6G networks are organized through centralized and distributed collaboration and distributed autonomy. On the one hand, more network functions will be extended to the edge of the network. On the other hand, global core functions will be concentrated to support more complex businesses through cloud-network integration and distributed collaboration.

[0003] When the network is deployed, there will be multiple network nodes (centralized nodes and distributed nodes); different network nodes differ in functions, resources, and users they serve. For example, some network nodes only have connection functions, while others have connection functions, perception functions, and intelligent functions. Some network nodes can only guarantee high-bandwidth services, while others can guarantee both high-bandwidth services and high-reliability, low-latency services. When the terminal's services need to span multiple network nodes or the UE moves from the current network node to another network node, the QoS guarantees for user services will differ due to the differences in network nodes.

[0004] Under the existing technology, it is not considered that when a terminal accesses a new network node or the terminal's service needs to span multiple network nodes, the terminal service QoS protection requirements cannot be guaranteed due to the differentiation of network nodes. Summary of the invention

[0005] The embodiments of the present application provide a network node determination method, device and storage medium to solve the QoS guarantee problem for services in a distributed network in the prior art, thereby ensuring that the QoS guarantee requirements of terminals at different network nodes are met.

[0006] In a first aspect, an embodiment of the present application provides a network determination method, applied to a terminal, including:

[0007] Obtain QoS feature information from the QoS assurance center;

[0008] A first radio access network RAN ​​and a first network node are determined according to the QoS characteristic information and the requirement characteristic information of the terminal.

[0009] In combination with the first aspect, in some implementations of the first aspect, determining the first radio access network RAN ​​and the first network node according to the QoS characteristic information and the requirement characteristic information of the terminal includes:

[0010] Determine a first radio access network RAN ​​and a first network node according to the QoS characteristic information and the requirement characteristic information of the terminal, and obtain network access information;

[0011] The first radio access network RAN ​​and a first network node are determined according to the network access information.

[0012] In combination with the first aspect, in some implementations of the first aspect, the QoS characteristic information includes:

[0013] Functional characteristic information and / or business characteristic information;

[0014] Among them, the functional characteristic information is used to indicate one or more of the connection function, perception function, intelligent function, calculation function, prediction function, and AI function; the service characteristic information is used to indicate service bandwidth or service reliability.

[0015] In combination with the first aspect, in some implementations of the first aspect, acquiring QoS characteristic information from the QoS assurance center includes:

[0016] The terminal feeds back the obtained QoS characteristic information after requesting the QoS assurance center, or receives the QoS characteristic information sent by the QoS assurance center.

[0017] In combination with the first aspect, in some implementations of the first aspect, the terminal determines, according to the network access information, the first radio access network RAN ​​and the first network node, including:

[0018] According to the network access information, a first access request is sent to the first radio access network RAN, wherein the first access request includes the first network node information.

[0019] In combination with the first aspect, in certain embodiments of the first aspect, the method further includes:

[0020] After receiving the QoS feature information, feeding back the required feature information of the terminal to the QoS assurance center, and sending a feature activation request to the QoS assurance center;

[0021] The feature activation request is used to request the QoS assurance center to activate the feature function of the first network node according to the required feature information.

[0022] In conjunction with the first aspect, in some implementations of the first aspect, the first network node includes:

[0023] A network node that is accessed for the first time; or

[0024] Switch from the source network node to the target network node or centralized network node.

[0025] In a second aspect, an embodiment of the present application further provides a network determination method, which is applied to an access network device, including:

[0026] Receiving a first access request sent by a terminal, wherein the first access request includes information of a first network node determined by the terminal, and the first network node information is determined based on QoS characteristic information obtained from a quality of service QoS assurance center and demand characteristic information of the terminal;

[0027] According to the first access request, a second access request is sent to the first network node.

[0028] In conjunction with the second aspect, in some implementations of the second aspect, the first network node includes:

[0029] A network node that is accessed for the first time; or

[0030] Switch from the source network node to the target network node or centralized network node.

[0031] In a third aspect, an embodiment of the present application further provides a terminal, including a memory, a transceiver, and a processor:

[0032] The memory is used to store a computer program; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer program in the memory and perform the following operations:

[0033] Obtain QoS feature information from the QoS assurance center;

[0034] A first radio access network RAN ​​and a first network node are determined according to the QoS characteristic information and the requirement characteristic information of the terminal.

[0035] In combination with the third aspect, in some implementations of the third aspect, determining the first radio access network RAN ​​and the first network node according to the QoS characteristic information and the requirement characteristic information of the terminal includes:

[0036] Determine a first radio access network RAN ​​and a first network node according to the QoS characteristic information and the requirement characteristic information of the terminal, and obtain network access information;

[0037] The first radio access network RAN ​​and a first network node are determined according to the network access information.

[0038] In conjunction with the third aspect, in some implementations of the third aspect, the QoS characteristic information includes:

[0039] Functional characteristic information and / or business characteristic information;

[0040] Among them, the functional characteristic information is used to indicate one or more of the connection function, perception function, intelligent function, calculation function, prediction function, and AI function; the service characteristic information is used to indicate service bandwidth or service reliability.

[0041] In combination with the third aspect, in some implementations of the third aspect, acquiring QoS characteristic information from the QoS assurance center includes:

[0042] The QoS characteristic information is fed back after requesting the QoS assurance center, or the QoS characteristic information is received from the QoS assurance center.

[0043] In combination with the third aspect, in some implementations of the third aspect, determining the first radio access network RAN ​​and the first network node according to the network access information includes:

[0044] According to the network access information, a first access request is sent to the first radio access network RAN, wherein the first access request includes the first network node information.

[0045] In combination with the third aspect, in some implementations of the third aspect, the processor executes obtaining QoS characteristic information from the QoS assurance center, including:

[0046] After receiving the QoS characteristic information, the terminal's demand characteristic information is fed back to the QoS assurance center, and a characteristic activation request is issued to the QoS assurance center, wherein the characteristic activation request is used to request the QoS assurance center to activate the characteristic function of the first network node according to the demand characteristic information.

[0047] In conjunction with the third aspect, in some implementations of the third aspect, the first network node includes:

[0048] A network node that is accessed for the first time; or

[0049] Switch from the source network node to the target network node or centralized network node.

[0050] In a fourth aspect, an embodiment of the present application further provides an access network device, including a memory, a transceiver, and a processor:

[0051] A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0052] Receiving a first access request sent by a terminal, wherein the first access request includes the first network node information determined by the terminal, and the first network node information is determined based on QoS characteristic information obtained from a quality of service QoS assurance center and demand characteristic information of the terminal;

[0053] According to the first access request, a second access request is sent to the first network node.

[0054] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the first network node includes:

[0055] A network node that is accessed for the first time; or

[0056] Switch from the source network node to the target network node or centralized network node.

[0057] In a fifth aspect, an embodiment of the present application further provides a network determination device, applied to a terminal, including:

[0058] An acquisition module is used to obtain QoS characteristic information from a service quality QoS assurance center;

[0059] The determination module is used to determine a first radio access network RAN ​​and a first network node according to the QoS characteristic information and the requirement characteristic information of the terminal.

[0060] In a sixth aspect, an embodiment of the present application further provides a network determination device, applied to an access network device, including:

[0061] A receiving module, configured to receive a first access request sent by a terminal, wherein the first access request includes information of a first network node determined by the terminal, and the first network node information is determined based on QoS characteristic information obtained from a quality of service QoS assurance center and demand characteristic information of the terminal;

[0062] A sending module is used to send a second access request to the first network node according to the first access request.

[0063] In the seventh aspect, an embodiment of the present application further provides a processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the method as described above.

[0064] The embodiments of the present application provide a method, device and storage medium for determining a network node, which obtains QoS characteristic information from a service quality QoS assurance center through a terminal to determine a wireless access network and a network node, thereby meeting the QoS assurance requirements of the terminal at different network nodes. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0066] Figure 1 This is a schematic diagram of an application scenario of the network node determination method provided in an embodiment of the present application;

[0067] Figure 2 is a flowchart of a method for determining a network node according to an embodiment of the present application;

[0068] Figure 3a This is one of the flowcharts of the network node determination method in Embodiment 1 of the present application;

[0069] Figure 3b This is the second flowchart of the network node determination method of the first embodiment of the present application;

[0070] Figure 4a This is one of the flowcharts of the network node determination method in Embodiment 2 of the present application;

[0071] Figure 4b This is the second flowchart of the network node determination method of the second embodiment of the present application;

[0072] Figure 5a This is one of the flowcharts of the network node determination method of Embodiment 3 of the present application;

[0073] Figure 5b This is the second flowchart of the network node determination method of the third embodiment of the present application;

[0074] Figure 6a This is one of the flowcharts of the network node determination method of Embodiment 4 of the present application;

[0075] Figure 6b This is the second flowchart of the network node determination method of the fourth embodiment of the present application;

[0076] Figure 7 is a schematic diagram of the structure of a terminal device provided in an embodiment of the present application;

[0077] Figure 8 It is a structural diagram of an access network device provided in an embodiment of the present application;

[0078] Fig. 9 is a schematic diagram of the structure of a network node determination device provided in an embodiment of the present application;

[0079] Fig.10It is a structural diagram of another network node determination device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0080] In the embodiments of the present application, the term "and / or" describes the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0081] In the embodiments of the present application, the term "plurality" refers to two or more than two, and other quantifiers are similar.

[0082] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0083] The important trend of 6G network development is centralized and distributed network architecture. The initial design of 5G and previous generations of network architecture is centralized control. With the development of the network, facing the dual driving forces of business scenarios and technology development, the design of 6G network needs to consider distributed architecture, and its control gradually evolves towards distributed. With the distributed development of intelligence and cloud computing, new connections and new networks will also move towards distributed.

[0084] 6G will be oriented to various scenarios and network requirements in the air, space, land and sea, and the centralized network architecture cannot uniformly meet all scenarios. Figure 1 As shown in the figure, the 6G network architecture needs to go beyond centralized control and gradually evolve to a distributed architecture, extending more network functions (such as authentication) to the edge of the network, and establishing distributed homogeneous micro-cloud units with different functional levels. Each micro-cloud unit is self-contained and has complete control and data forwarding functions. Multiple micro-cloud units can form autonomous micro-networks according to business needs, and provide targeted network services according to specific business scenarios, user scale, geographical environment and other requirements. Among them, the above-mentioned micro-cloud units are also called distributed network nodes, representing an on-demand customized or fully functional core network.

[0085] About distributed networks:

[0086] A distributed network is formed by interconnecting nodes with multiple terminals distributed in different locations. Any point in the network is connected to at least two lines. When any line fails, the communication can be completed through other links, which has high reliability. At the same time, the network is easy to expand. A distributed network is also called a mesh network. It is formed by interconnecting computer systems distributed in different locations, and there is no central node in the network. The communication subnet is a closed structure, and the communication control function is distributed on each node. The characteristics of a distributed network are: high reliability; easy resource sharing among nodes in the network; improved information flow distribution of the line; the best path can be selected, and the transmission delay is small; complex control: complex software; high line cost and difficult to expand. Local area networks usually have only four types of bus, ring, star and tree networks. When actually building a local area network, the topology is not necessarily a single one. It is usually a comprehensive utilization of these four topologies. Especially after the local area network interconnection technology has been vigorously developed, a composite form of a certain topology will appear. Distributed networks are often the topology used by wide area networks.

[0087] About Centralized Networks:

[0088] Centralized network is a network with star or tree topology, in which all information must pass through the central node switch, and all kinds of links originate from the central node switch. Centralized network management is to establish a perfect data system and information sharing mechanism for enterprise decision-making through a centralized management system with the help of modern network communication technology. The centralized management system is installed on a server. Users of each system log in to use the system through the wide area network to achieve common operation of the same system, use and share the same database, and achieve data management permissions that conform to the existing organizational structure through strict authority management and security mechanisms.

[0089] About QoS in mobile communication networks:

[0090] QoS: Quality of Service is a description of the quality of service transmission and a guarantee mechanism for service transmission quality. Its purpose is to provide end-to-end service quality assurance for various services according to their different needs. The concept of QoS flow is introduced in the 5G QoS model. QoS flow is the minimum granularity of QoS processing. 5G performs QoS processing based on the granularity of flow, and the network side performs data packet forwarding based on QFI (QoS Flow ID, QoS flow code).

[0091] The QoS assurance center can be a network element deployed in a centralized network node; it can also be a functional module deployed in a pipe, or an independent functional module deployed separately. The closer the network element is to the network node, the faster it can obtain QoS information, and the shorter the delay; the higher the location of the independent entity, the longer the delay in obtaining QoS information.

[0092] The terminal device involved in the embodiment of the present application may be a device that provides voice and / or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. In different systems, the name of the terminal device may also be different. For example, in a 5G system, the terminal device may be called a user equipment (UE). A wireless terminal device can communicate with one or more core networks (CN) via a radio access network (RAN entity). The wireless terminal device may be a mobile terminal device, such as a mobile phone (or a "cellular" phone) and a computer with a mobile terminal device. For example, it may be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges language and / or data with a radio access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs) and other devices. The wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal device, an access terminal device, a user terminal device, a user agent, and a user device, but is not limited in the embodiments of the present application.

[0093] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0094] Among them, the method and the device are based on the same application concept. Since the method and the device solve the problem in a similar principle, the implementation of the device and the method can refer to each other, and the repeated parts will not be repeated.

[0095] Figure 2 Flow chart of the network node determination method provided in this embodiment. Figure 2 As shown, this embodiment provides a method for determining a network node, the execution subject is a network function entity, wherein the network function entity can be a RAN entity (radio access network) entity or other network function entities. The specific steps of the network node determination method are as follows:

[0096] S201. The terminal obtains QoS characteristic information from the QoS assurance center; wherein the QoS characteristic information includes functional characteristic information and / or service characteristic information of both the selected radio access network RAN ​​and the network node; wherein the functional characteristic information is used to indicate one or more of the connection function, perception function, intelligent function, computing function, prediction function, and AI function; and the service characteristic information is used to indicate service bandwidth or service reliability.

[0097] Optionally, the terminal feeds back the obtained QoS characteristic information after requesting the QoS assurance center, or the QoS characteristic information is actively provided by the QoS assurance center.

[0098] S202, the terminal determines the first radio access network RAN ​​and the first network node according to the QoS characteristic information and the demand characteristic information of the terminal. The first radio access network RAN ​​and the first network node are the radio access network RAN ​​and the network node selected by the terminal to be accessed. The terminal selects the radio access network RAN ​​and the network node to be accessed from the selected radio access network RAN ​​and the network node according to the QoS characteristic information and the demand characteristic information of the terminal, and obtains the network access information; the terminal determines the radio access network RAN ​​and the network node to be accessed according to the network access information. The network node to be accessed includes: a network node accessed for the first time, or switching from a source network node to a target network node or a centralized network node. The network node mentioned here is also called a distributed or centralized network node, representing an on-demand customized or fully functional core network. The centralized node has complete functions and business characteristics, and can manage and control all distributed network nodes at the same time.

[0099] Optionally, the terminal sends a first access request to the first radio access network RAN ​​to be accessed according to the network access information, wherein the first access request includes the first network node information.

[0100] In another optional embodiment, after receiving the QoS characteristic information, the terminal feeds back the required characteristic information of the terminal to the QoS assurance center, and sends a characteristic activation request to the QoS assurance center; wherein the characteristic activation request is used to request the QoS assurance center to activate the characteristic function of the network node according to the required characteristic information. At the same time, a new network node that meets the requirements can also be created according to the requirements in the characteristic information.

[0101] In the embodiment of the present application, all RANs and network nodes (distributed network nodes and centralized network nodes) must report or register with the QoS assurance center. The information reported or registered is its QoS assurance information. The QoS assurance information includes functional QoS assurance characteristics and service QoS assurance characteristics. Among them, the functional QoS characteristics refer to the functions possessed by the network nodes. For example, some network nodes only have connection functions, while some network nodes have connection functions, perception functions, intelligent functions, etc.; the service QoS assurance characteristics refer to the services that the network nodes can guarantee. Some network nodes can only guarantee large-bandwidth services; some network nodes can guarantee both large-bandwidth services and high-reliability and low-latency services. The terminal requests the QoS assurance center to obtain or the QoS assurance center actively sends the QoS assurance information of the RAN and network nodes to the terminal. The terminal selects the RAN and network nodes that can meet its own services based on the received QoS assurance information and its own services to complete service access. The RAN and network nodes selected by the terminal in this embodiment solve the problem of inability to meet its service access or service interruption due to the differentiation of RAN and network nodes in a distributed network, and improves the continuity and reliability of terminal services. At the same time, the function of the QoS assurance center is to manage the QoS assurance information of all RANs and network nodes (distributed network nodes and centralized network nodes). It is an independent functional module that can be deployed inside the pipe or on a centralized network node, with no limitation on its location.

[0102] In another embodiment of the present application, a network determination method is applied to an access network device, including:

[0103] Step 1: receiving a first access request sent by a terminal, wherein the first access request includes information of a first network node selected by the terminal;

[0104] Step 2: Send a second access request to the first network node according to the first access request. The first network node includes: a network node accessed for the first time; or a target network node or a centralized network node switched from a source network node.

[0105] The above process of the embodiment of the present application will be described in detail below in conjunction with specific embodiments.

[0106] Embodiment 1

[0107] Figure 3a This is one of the specific implementation flow diagrams of the network node determination method of the first embodiment of the present application. This embodiment only considers that when the terminal's service needs to span multiple nodes, it is necessary to go to the QoS assurance center to obtain network nodes that meet its service characteristics based on the terminal's service characteristics, and then complete service access based on multiple network nodes, such as: PDU session establishment, service request, switching, etc. The UE can directly connect to the QoS assurance center to obtain the QoS information of each network node, or the UE can first select a default RAN access, and then connect to the QoS assurance center through the default RAN to obtain the QoS information of each network node. Figure 3a As shown, the specific process is as follows:

[0108] Step 1: The terminal obtains QoS information of RAN and network nodes from the QoS center. The QoS information mainly carries the identification, functional characteristics (such as connection function, perception function, computing function, AI function, etc.), service characteristics (large bandwidth, high reliability and low latency, etc.), attributes of network functions in network nodes, location and other information of RAN and network nodes. Before this step, RAN and network nodes have completed registration with the QoS assurance center.

[0109] Step 2: After receiving the QoS information from the RAN and the network node, the terminal responds to it.

[0110] Step 3: The terminal selects a suitable RAN based on RAN QoS information and network performance parameters. The terminal selects a suitable RAN based on its own service characteristics or required functional characteristics, whether the QoS information received from the RAN can meet its own characteristics, and finally combines factors such as network performance (such as signal strength). In other words, select the RAN that can meet and guarantee the service needs of the terminal. If there are multiple RANs, select one at random.

[0111] Step 4: The terminal sends an access request to the selected RAN and sends the selected network node information to the RAN (this message carries information of multiple network nodes selected by the terminal according to its own services and the received QoS information of the network nodes).

[0112] Step 5: After receiving the access request sent by the terminal, the RAN selects a suitable network node according to the network node information carried in the message.

[0113] Step 6: RAN sends an access request to the selected network node.

[0114] Step 7: After receiving the access request from the RAN, the network node sends an access response to it, approving its access.

[0115] Step 8: RAN sends an access response to the terminal, approving its access.

[0116] Step 9: The terminal accesses services to the selected multiple network nodes (this process includes registration, session establishment, etc.).

[0117] Figure 3b This is the second flowchart of the network node determination method of the first embodiment of the present application. Figure 3b As shown, in the specific process of this embodiment, Figure 3a The difference lies in step 1-2, and the specific differences include: the QoS assurance center sends the QoS information of RAN and network nodes to the terminal, instead of the terminal actively obtaining it. The QoS assurance center actively sends QoS information instead of the terminal actively obtaining it, which can effectively reduce the complexity of the terminal itself.

[0118] Embodiment 2

[0119] Figure 4a This is one of the flow diagrams of the network node determination method of the second embodiment of the present application. This embodiment is aimed at the scenario where the terminal has accessed the service at the source network node and needs to select a new network node, that is, the target network node, to initiate access and service access due to the mobility of the terminal. Figure 4a As shown, the specific process is as follows:

[0120] Step 0: The terminal has accessed the service at the source network node, and the RAN and network nodes have completed registration with the QoS assurance center. Both the source network node and the target network node need to register with the QoS assurance center or report their QoS information to the QoS assurance center. That is, all RAN and network nodes need to report their QoS information to the QoS assurance center.

[0121] Step 1: The terminal obtains QoS information of RAN and network nodes from the QoS assurance center, which mainly carries the identification, functional characteristics (for example, connection function, perception function, computing function, AI function, etc.), service characteristics (large bandwidth, high reliability and low latency, etc.), attributes of network functions in network nodes, and location information of RAN and network nodes.

[0122] Step 2: After receiving the QoS information from the RAN and the network node, the terminal responds to it.

[0123] Step 3: The terminal selects a suitable RAN based on parameters such as RAN QoS information and network performance.

[0124] Step 4: The terminal sends an access request to the selected RAN and sends the selected target network node information to the RAN (this message carries the target network node information selected by the terminal according to its own service and the received QoS information of the network node).

[0125] Step 5: After receiving the access request sent by the terminal, the RAN selects a target network node according to the target network node information carried in the message.

[0126] Step 6: RAN sends an access request to the selected target network node.

[0127] Step 7: After receiving the access request from the RAN, the target network node sends an access response to it, approving its access.

[0128] Step 8: RAN sends an access response to the terminal, approving its access.

[0129] Step 9: The terminal accesses services to the selected target network node (this process includes registration, session establishment, etc.).

[0130] Figure 4b This is a second flow chart of a method for determining a network node in a distributed network according to the second embodiment of the present application. Figure 4b As shown, in the specific process of this embodiment, Figure 4a The difference lies in step 1-2, and the specific differences include: the QoS assurance center sends the QoS information of RAN and network nodes to the terminal, instead of the terminal actively obtaining it. The QoS assurance center actively sends QoS information instead of the terminal actively obtaining it, which can effectively reduce the complexity of the terminal itself.

[0131] Embodiment 3

[0132] Figure 5a This is one of the specific implementation flow diagrams of the network node determination method of the third embodiment of the present application. This embodiment is aimed at the scenario where the terminal has accessed the service at the source network node, and needs to select a new network node, that is, the target network node, due to the mobility of the terminal, but the network node QoS information obtained from the QoS assurance center does not meet the requirements, and the terminal selects a centralized network node for service access. Figure 5a As shown, the specific process is as follows:

[0133] Step 0: The terminal has accessed services at the source network node, and the RAN and network node have completed registration with the QoS assurance center.

[0134] Step 1: The terminal obtains QoS information of RAN and network nodes from the QoS center, which mainly carries the identification, functional characteristics (for example, connection function, perception function, computing function, AI function, etc.), service characteristics (large bandwidth, high reliability and low latency, etc.), attributes of network functions in network nodes, location and other information of RAN and network nodes.

[0135] Step 2: After receiving the QoS information from the RAN and the network node, the terminal responds to it.

[0136] Step 3: The terminal selects a suitable RAN based on parameters such as RAN QoS information and network performance.

[0137] Step 4: The terminal sends an access request to the selected RAN and sends the selected centralized network node information to the RAN (because no suitable network node is selected from the network nodes received from the QoS assurance center, a centralized network node is selected).

[0138] Step 5: After receiving the access request sent by the terminal, the RAN selects a centralized network node according to the centralized network node information carried in the message.

[0139] Step 6: RAN sends an access request to the selected centralized network node.

[0140] Step 7: After receiving the access request from the RAN, the centralized network node sends an access response to the RAN, approving its access.

[0141] Step 8: RAN sends an access response to the terminal, approving its access.

[0142] Step 9: The terminal accesses services to the selected centralized network node (this process includes registration, session establishment, etc.).

[0143] It should be noted here that the centralized network node has complete and powerful network functions, has comprehensive global data information, has the highest control authority, can control all distributed network nodes, and supports collaboration between distributed network nodes. Distributed network nodes have basic control plane functions and user plane functions, can exist independently to provide connection services to users, other network functions can be selectively deployed, have data information and control authority of this node, and optionally have data information and control authority of some other network nodes.

[0144] The essential difference between the selection of centralized network nodes and distributed network nodes is that when selecting network nodes, distributed network nodes are given priority. When there are no distributed nodes that meet the requirements, centralized network nodes will be selected. Because centralized network nodes are deployed at a higher position, and distributed network nodes are located at the edge, closer to the terminal, giving priority to distributed network nodes greatly reduces network latency.

[0145] Figure 5b This is the second flowchart of the network node determination method of the third embodiment of the present application. Figure 5b As shown, in the specific process of this embodiment, Figure 5a The only difference is in step 1-2, which specifically includes: the QoS assurance center sends the QoS information of the RAN and network nodes to the terminal, instead of the terminal actively obtaining it. The QoS assurance center actively sends the QoS information, instead of the terminal actively obtaining it, which can effectively reduce the complexity of the terminal itself.

[0146] Embodiment 4

[0147] Figure 6a This is one of the specific implementation flow diagrams of the network node determination method of the fourth embodiment of the present application. In this embodiment, when the network node received by the terminal from the QoS assurance center cannot meet its service, the terminal feeds back its own service characteristics to the QoS assurance center. The QoS assurance center activates the unactivated characteristic functions in the network node according to the terminal's service, and then feeds back the network node after the activated characteristic function to the terminal. Figure 6a As shown, the specific process is as follows:

[0148] Step 0: The terminal has accessed services at the source network node, and the RAN and network node have completed registration with the QoS assurance center.

[0149] Step 1: The terminal obtains QoS information of RAN and network nodes from the QoS center, which mainly carries the identification, functional characteristics (for example, connection function, perception function, computing function, AI function, etc., including activated or inactivated functions), service characteristics (large bandwidth, high reliability and low latency, etc.), attributes of network functions in network nodes, location and other information of RAN and network nodes.

[0150] Step 2: After receiving the QoS information from the RAN and the network node, the terminal responds to it.

[0151] Step 3: The terminal determines that there is no network node that meets its service requirements, and makes a request to the QoS assurance center to notify the QoS assurance center of its ongoing services.

[0152] Step 4: The QoS assurance center sends a function activation request to the network node that has this function but has not been started, based on the functional characteristics required by the terminal's ongoing business. In addition, if the QoS assurance center finds a network node without this function, it can automatically or manually pull up or create a network node to the management orchestration center or related management module. According to the terminal's business needs, some terminal services may require the collaboration of multiple network nodes to complete, so multiple nodes are selected and sent to multiple network nodes; if the terminal's business can be completed by one network node, it is sent to one of them. If there are multiple nodes that meet the requirements, one is randomly selected.

[0153] Step 5: After receiving the activation request sent by QoS, the target network node activates the corresponding function and sends a response to the QoS assurance center.

[0154] Step 6: The QoS assurance center sends a QoS service feature notification response to the terminal, and sends the QoS information of the network node that activates the corresponding function to the terminal.

[0155] Step 7: The terminal selects a suitable RAN based on parameters such as RAN QoS information and network performance.

[0156] Step 8: The terminal sends an access request to the selected RAN, and at the same time sends the selected target network node information to the RAN (this message carries the target network node information selected by the terminal according to the received QoS information of the network node).

[0157] Step 9: After receiving the access request sent by the terminal, the RAN selects a network node according to the target network node information carried in the message.

[0158] Step 10: The RAN sends an access request to the selected target network node.

[0159] Step 11: After receiving the access request from the RAN, the target network node sends an access response to it, approving its access.

[0160] Step 12: RAN sends an access response to the terminal, approving its access. After step 12, the source network node is exited, releasing the resources between it and the terminal.

[0161] Step 13: The terminal accesses services to the selected target network node (this process includes registration, session establishment, etc.).

[0162] Embodiment 4: The network node can serve the terminal only when it provides the connection function, but other network functions (sensing function, intelligent function, etc.) are not activated or started. Only the connection function is started but other functions are not started in order to reduce network overhead and save energy. The corresponding function is started only when the terminal service requires it. At the same time, a new network node that meets the requirements can also be created according to the requirements in the characteristic information.

[0163] Figure 6b This is the second flowchart of the network node determination method of the fourth embodiment of the present application. Figure 6b As shown, in the specific process of this embodiment, Figure 6a The only difference is in step 1-2, which specifically includes: the QoS assurance center sends the QoS information of the RAN and network nodes to the terminal, instead of the terminal actively obtaining it. The QoS assurance center actively sends the QoS information, instead of the terminal actively obtaining it, which can effectively reduce the complexity of the terminal itself.

[0164] Figure 7 is a schematic diagram of the structure of the terminal device provided in the embodiment of the present application; Figure 7 As shown, it includes a memory 71, a transceiver 72 and a processor 73:

[0165] The memory 71 is used to store computer programs; the transceiver 72 is used to send and receive data under the control of the processor 73; the processor 73 is used to read the computer program in the memory 71 and perform the following operations:

[0166] Obtain QoS feature information from the QoS assurance center;

[0167] The terminal determines a first radio access network RAN ​​and a first network node according to the QoS characteristic information and the requirement characteristic information of the terminal.

[0168] Specifically, the transceiver 72 is used to receive and send data under the control of the processor 73.

[0169] Among them, Figure 7In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 73 and various circuits of memory represented by memory 71 are linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 72 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, such as a wireless channel, a wired channel, an optical cable, and other transmission media. For different user devices, the user interface 74 may also be an interface capable of externally and internally connecting required devices, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0170] The processor 73 is responsible for managing the bus architecture and general processing, and the memory 71 can store data used by the processor 73 when performing operations.

[0171] Optionally, the processor 73 can be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or a complex programmable logic device (CPLD), and the processor can also adopt a multi-core architecture.

[0172] The processor calls the computer program stored in the memory to execute any of the methods provided in the embodiments of the present application according to the obtained executable instructions. The processor and the memory can also be arranged physically separately.

[0173] Optionally, determining the first radio access network RAN ​​and the first network node according to the QoS characteristic information and the requirement characteristic information of the terminal includes:

[0174] Determine a first radio access network RAN ​​and a first network node according to the QoS characteristic information and the requirement characteristic information of the terminal, and obtain network access information;

[0175] A first radio access network RAN ​​and a first network node are determined according to the network access information.

[0176] Optionally, the QoS characteristic information includes:

[0177] Functional characteristic information and / or business characteristic information;

[0178] Among them, the functional characteristic information is used to indicate one or more of the connection function, perception function, intelligent function, calculation function, prediction function, and AI function; the service characteristic information is used to indicate service bandwidth or service reliability.

[0179] Optionally, the acquiring QoS characteristic information from the QoS assurance center includes:

[0180] The terminal feeds back the obtained QoS characteristic information after requesting the QoS assurance center, or receives the QoS characteristic information sent by the QoS assurance center.

[0181] Optionally, the determining the first radio access network RAN ​​and the first network node according to the network access message includes:

[0182] According to the network access information, a first access request is sent to the first radio access network RAN, wherein the first access request includes information of the selected first network node.

[0183] Optionally, the processor executes acquiring QoS characteristic information from the QoS assurance center, including:

[0184] After receiving the QoS characteristic information, the terminal's demand characteristic information is fed back to the QoS assurance center, and a characteristic activation request is issued to the QoS assurance center, wherein the characteristic activation request is used to request the QoS assurance center to activate the characteristic function of the network node according to the demand characteristic information. At the same time, a new network node that meets the requirements can also be created according to the requirements in the characteristic information.

[0185] Optionally, the first network node includes:

[0186] A network node that is accessed for the first time; or

[0187] Switch from the source network node to the new target network node or centralized network node.

[0188] It should be noted here that the above-mentioned terminal provided in the embodiment of the present application can implement all the method steps implemented by the method embodiment in which the above-mentioned execution subject is the terminal, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0189] Figure 8 is a schematic diagram of the structure of the access network device provided in the embodiment of the present application; Figure 8 As shown, Figure 8 As shown, the access network device includes a memory 81, a transceiver 82, and a processor 83, wherein:

[0190] The memory 81 is used to store computer programs; the transceiver 82 is used to send and receive data under the control of the processor 83; the processor 83 is used to read the computer program in the memory 81 and perform the following operations:

[0191] Receiving a first access request sent by a terminal, wherein the first access request includes information of a first network node selected by the terminal;

[0192] According to the first access request, a second access request is sent to the first network node.

[0193] Specifically, the transceiver 82 is used to receive and send data under the control of the processor 83.

[0194] Among them, Figure 8 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors 83 represented by processor 83 and memory represented by memory 81. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 82 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, such as a wireless channel, a wired channel, an optical cable, and the like. The processor 83 is responsible for managing the bus architecture and general processing, and the memory 81 may store data used by the processor 83 when performing operations.

[0195] Optionally, the processor 83 can be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or a complex programmable logic device (CPLD), and the processor can also adopt a multi-core architecture.

[0196] The processor is used to execute any of the methods provided in the embodiments of the present application according to the obtained executable instructions by calling the computer program stored in the memory 81. The processor 83 and the memory 81 can also be arranged physically separately.

[0197] Optionally, the first network node includes:

[0198] A network node that is accessed for the first time; or

[0199] Switch from the source network node to the new target network node or centralized network node.

[0200] It should be noted here that the above-mentioned access network device provided in the embodiment of the present application can implement all the method steps implemented by the method embodiment in which the above-mentioned execution subject is the access network device, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0201] Fig. 9 is a schematic diagram of the structure of a network node determination device provided in an embodiment of the present application; Fig. 9 As shown, it is applied to the terminal, including:

[0202] An acquisition module 91 is used to obtain QoS characteristic information from a QoS assurance center;

[0203] The determination module 92 is configured to determine a first radio access network RAN ​​and a first network node according to the QoS characteristic information and the requirement characteristic information of the terminal.

[0204] Optionally, determining the first radio access network RAN ​​and the first network node according to the QoS characteristic information and the requirement characteristic information of the terminal includes:

[0205] Determine a first radio access network RAN ​​and a first network node according to the QoS characteristic information and the requirement characteristic information of the terminal, and obtain network access information;

[0206] The first radio access network RAN ​​and a first network node are determined according to the network access information.

[0207] Optionally, the QoS characteristic information includes:

[0208] Functional characteristic information and / or business characteristic information;

[0209] Among them, the functional characteristic information is used to indicate one or more of the connection function, perception function, intelligent function, calculation function, prediction function, and AI function; the service characteristic information is used to indicate service bandwidth or service reliability.

[0210] Optionally, the acquiring QoS characteristic information from the QoS assurance center includes:

[0211] The terminal feeds back the obtained QoS characteristic information after requesting the QoS assurance center, or receives the QoS characteristic information sent by the QoS assurance center.

[0212] Optionally, the determining the first radio access network RAN ​​and the first network node according to the network access information includes:

[0213] According to the network access information, a first access request is sent to the first radio access network RAN, wherein the first access request includes information of the selected first network node.

[0214] Optionally, the processor executes acquiring QoS characteristic information from the QoS assurance center, including:

[0215] After receiving the QoS feature information, the terminal's required feature information is fed back to the QoS assurance center, and a feature activation request is sent to the QoS assurance center, wherein the feature activation request is used to request the QoS assurance center to activate the feature function of the network node according to the required feature information. At the same time, a new network node that meets the requirements can also be created according to the requirements in the feature information.

[0216] Optionally, the first network node includes:

[0217] A network node that is accessed for the first time; or

[0218] Switch from the source network node to the new target network node or centralized network node.

[0219] It should be noted here that the above-mentioned device provided in the embodiment of the present application can implement all the method steps implemented in the above-mentioned method embodiment, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0220] Fig.10 is a schematic diagram of the structure of another network node determination device provided in an embodiment of the present application, such as Fig.10 As shown, it is applied to access network equipment, including:

[0221] The receiving module 101 is configured to receive a first access request sent by a terminal, wherein the first access request includes information of a first network node selected by the terminal;

[0222] The sending module 102 is configured to send a second access request to the first network node according to the first access request.

[0223] Optionally, the first network node includes:

[0224] A network node that is accessed for the first time; or

[0225] Switch from the source network node to the new target network node or centralized network node.

[0226] It should be noted here that the above-mentioned device provided in the embodiment of the present application can implement all the method steps implemented in the above-mentioned method embodiment, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0227] It should be noted that the division of units in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional unit in each embodiment of the present application may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0228] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0229] On the other hand, an embodiment of the present application further provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the methods provided in the above embodiments.

[0230] The processor-readable storage medium can be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic storage (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical storage (such as CD, DVD, BD, HVD, etc.), and semiconductor storage (such as ROM, EPROM, EEPROM, non-volatile memory (NANDFLASH), solid-state drive (SSD)), etc.

[0231] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) that contain computer-usable program code.

[0232] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer executable instructions. These computer executable instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0233] These processor executable instructions may also be stored in a processor readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the processor readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0234] These processor-executable instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable device to implement the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0235] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the scope of protection of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A network determination method, characterized in that: Applied to terminals, including: Obtain QoS feature information from the QoS assurance center; A first radio access network RAN ​​and a first network node are determined according to the QoS characteristic information and the requirement characteristic information of the terminal.

2. The network determination method according to claim 1, characterized in that: The determining, according to the QoS characteristic information and the requirement characteristic information of the terminal, a first radio access network RAN ​​and a first network node comprises: Determine a first radio access network RAN ​​and a first network node according to the QoS characteristic information and the requirement characteristic information of the terminal, and obtain network access information; The first radio access network RAN ​​and a first network node are determined according to the network access information.

3. The network determination method according to claim 1, characterized in that: The QoS characteristic information includes: Functional characteristic information and / or business characteristic information; Among them, the functional characteristic information is used to indicate one or more of the connection function, perception function, intelligent function, calculation function, prediction function, and AI function; the service characteristic information is used to indicate service bandwidth or service reliability.

4. The network determination method according to claim 3, characterized in that: The obtaining of QoS characteristic information from the QoS assurance center includes: The terminal feeds back the obtained QoS characteristic information after requesting the QoS assurance center, or receives the QoS characteristic information sent by the QoS assurance center.

5. The network determination method according to claim 2, characterized in that: The terminal determines, according to the network access information, the first radio access network RAN ​​and the first network node, including: According to the network access information, a first access request is sent to the first radio access network RAN, wherein the first access request includes the first network node information.

6. The network determination method according to claim 2, characterized in that: The method further comprises: After receiving the QoS feature information, feeding back the required feature information of the terminal to the QoS assurance center, and sending a feature activation request to the QoS assurance center; The feature activation request is used to request the QoS assurance center to activate the feature function of the first network node according to the required feature information.

7. The network determination method according to claims 1-6, characterized in that: The first network node includes: A network node that is accessed for the first time; or Switch from the source network node to the target network node or centralized network node.

8. A network determination method, characterized in that: Applied to access network equipment, including: Receiving a first access request sent by a terminal, wherein the first access request includes information of a first network node determined by the terminal, and the first network node information is determined based on QoS characteristic information obtained from a quality of service QoS assurance center and demand characteristic information of the terminal; According to the first access request, a second access request is sent to the first network node.

9. The network determination method according to claim 8, characterized in that: The first network node includes: A network node that is accessed for the first time; or Switch from the source network node to the target network node or centralized network node.

10. A terminal, characterized in that: Includes memory, transceiver and processor: The memory is used to store a computer program; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer program in the memory and perform the following operations: Obtain QoS feature information from the QoS assurance center; A first radio access network RAN ​​and a first network node are determined according to the QoS characteristic information and the requirement characteristic information of the terminal.

11. The terminal according to claim 10, characterized in that: The determining, according to the QoS characteristic information and the requirement characteristic information of the terminal, a first radio access network RAN ​​and a first network node comprises: Determine a first radio access network RAN ​​and a first network node according to the QoS characteristic information and the requirement characteristic information of the terminal, and obtain network access information; The first radio access network RAN ​​and a first network node are determined according to the network access information.

12. The terminal according to claim 10, characterized in that: The QoS characteristic information includes: Functional characteristic information and / or business characteristic information; Among them, the functional characteristic information is used to indicate one or more of the connection function, perception function, intelligent function, calculation function, prediction function, and AI function; the service characteristic information is used to indicate service bandwidth or service reliability.

13. The terminal according to claim 12, characterized in that: The obtaining of QoS characteristic information from the QoS assurance center includes: The terminal feeds back the obtained QoS characteristic information after requesting the QoS assurance center, or receives the QoS characteristic information sent by the QoS assurance center.

14. The terminal according to claim 11, characterized in that: The determining, according to the network access information, the first radio access network RAN ​​and the first network node includes: According to the network access information, a first access request is sent to the first radio access network RAN, wherein the first access request includes the first network node information.

15. The terminal according to claim 11, characterized in that: The processor executes obtaining QoS characteristic information from the QoS guarantee center, including: After receiving the QoS characteristic information, the terminal's demand characteristic information is fed back to the QoS assurance center, and a characteristic activation request is issued to the QoS assurance center, wherein the characteristic activation request is used to request the QoS assurance center to activate the characteristic function of the first network node according to the demand characteristic information.

16. The terminal according to claims 10-15, characterized in that: The first network node includes: A network node that is accessed for the first time; or Switch from the source network node to the target network node or centralized network node.

17. An access network device, comprising a memory, a transceiver, and a processor: A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations: A first access request sent by a terminal is received, wherein: The first access request includes information of a first network node determined by the terminal, where the first network node information is determined based on QoS characteristic information obtained from a quality of service (QoS) assurance center and demand characteristic information of the terminal; According to the first access request, a second access request is sent to the first network node.

18. The access network device according to claim 17, characterized in that: The first network node includes: A network node that is accessed for the first time; or Switch from the source network node to the target network node or centralized network node.

19. A network determination device, characterized in that: Applied to terminals, including: An acquisition module is used to obtain QoS characteristic information from a service quality QoS assurance center; The determination module is used to determine a first radio access network RAN ​​and a first network node according to the QoS characteristic information and the requirement characteristic information of the terminal.

20. A network determination device, characterized in that: Applied to access network equipment, including: A receiving module, configured to receive a first access request sent by a terminal, wherein the first access request includes information of a first network node determined by the terminal, and the first network node information is determined based on QoS characteristic information obtained from a quality of service QoS assurance center and demand characteristic information of the terminal; A sending module is used to send a second access request to the first network node according to the first access request.

21. A processor-readable storage medium, characterized in that: The processor-readable storage medium stores a computer program, and the computer program is used to cause the processor to execute the method of any one of claims 1-7 or 8-9.

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