CN117768998A

CN117768998A - Network registration method and device

Info

Publication number: CN117768998A
Application number: CN202211147961.6A
Authority: CN
Inventors: 程志密; 宋雅琴; 刘强
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2022-09-19
Filing date: 2022-09-19
Publication date: 2024-03-26
Also published as: WO2024061075A1

Abstract

The embodiment of the application provides a network registration method and device, wherein the method applied to a terminal comprises the following steps: and sending a first registration request message to an access network entity, wherein the first registration request message is used for determining a target network node and a target access and mobility management functional entity corresponding to the target network node. According to the network registration method and device, under the scene that the access network entity is connected with a plurality of network nodes at the same time, a proper network node can be selected for the terminal, so that the terminal can access the network node, and the network node can provide service for the terminal.

Description

Network registration method and device

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a network registration method and device.

Background

The sixth generation mobile communication standard (6th generation mobile networks,6G) is oriented to various scenes and network requirements of sky, day, land and sea, and the centralized network architecture cannot uniformly meet all scenes. To cope with this challenge, the 6G network architecture needs to go beyond centralized control, gradually evolve toward a distributed architecture, extend more network functions (such as authentication) to the network edge, and build a distributed homogeneous micro cloud unit with different functional levels.

However, in the current terminal network registration method, only network registration in a scenario of one network node can be realized, so network registration in a scenario of multiple network nodes becomes a problem to be solved.

Disclosure of Invention

The embodiment of the application provides a network registration method and device, which are used for solving the defect that network registration can only be performed under the scene of connecting one network node in the prior art and realizing network registration under the condition of connecting a plurality of network nodes.

In a first aspect, an embodiment of the present application provides a network registration method, which is applied to a terminal, and includes:

and sending a first registration request message to an access network entity, wherein the first registration request message is used for determining a target network node and a target access and mobility management functional entity corresponding to the target network node.

Optionally, the first registration request message carries a target network node identifier and/or terminal information for determining the target network node.

Optionally, the target network node identification is determined based on a preconfigured list of accessible network nodes.

Optionally, the method further comprises:

and receiving the current list of accessible network nodes sent by the target access and mobility management function entity.

In a second aspect, an embodiment of the present application further provides a network registration method, applied to an access network entity, including:

receiving a first registration request message sent by a terminal;

determining a target network node based on the first registration request message;

determining a target access and mobility management function entity corresponding to the target network node based on pre-configured access and mobility management function information;

and sending a second registration request message to the target access and mobility management function entity.

Optionally, in the case that the first registration request message does not carry the target network node identifier and/or the terminal information for determining the target network node, determining the target network node based on the first registration request message includes:

determining a first network node based on the first registration request message and a first local policy;

sending the first registration request message to an access and mobility management function entity corresponding to the first network node;

receiving a first response message sent by an access and mobility management function entity corresponding to the first network node;

The target network node is determined based on the first response message.

Optionally, in case the first network node is a centralized node, the first response message comprises a target network node identification or a list of candidate network nodes for determining the target network node.

Optionally, in the case that the first network node is a distributed node, the determining, based on the first response message, the target network node includes any one of:

determining that the distributed node is the target network node based on the first response message;

determining a target network node based on the first response message carrying the target network node identification;

determining the target network node based on the first response message carrying a list of candidate network nodes;

wherein the target network node identification and the list of candidate network nodes are obtained by the distributed node requesting from a centralized node.

Optionally, in the case that the first network node is a plurality of network nodes, the first registration request message carries registration information and access inquiry indication information of the terminal;

The first response message comprises receiving information or rejecting information, and the first response message is determined by the access and mobility management function entity corresponding to each network node based on the registration information and the access inquiry indication information;

the determining the target network node based on the first response message includes:

in the network node transmitting the received information, the target network node is determined based on a second local policy.

In a third aspect, an embodiment of the present application further provides a network registration method, which is applied to an access and mobility management function entity corresponding to a centralized node, including:

receiving a first registration request message sent by a first request entity and used for requesting a target network node;

transmitting a response message for determining a target network node to the first requesting entity;

the first request entity is an access network entity or an access and mobility management function entity corresponding to a distributed node, and the first registration request message originates from a terminal.

Optionally, the sending a response message for determining a target network node to the first requesting entity further includes:

determining a target network node identity or a list of candidate network nodes for determining the target network node based on the first registration request message;

The sending a response message for determining a target network node to the first requesting entity includes:

and sending a response message carrying the target network node identification or a candidate network node list for determining the target network node to the first request entity.

Optionally, in the case that the first request entity is an access network entity, and the first registration request message carries registration information and access inquiry indication information of the terminal, the method further includes:

determining whether to receive the terminal based on the registration information and the access inquiry instruction information;

and sending a first response message carrying receiving information or rejecting information to the first request entity based on whether the terminal is received or not.

Optionally, the method further comprises:

receiving a creation context request message sent by a target access and mobility management function entity and used for requesting a current accessible network node list corresponding to the terminal;

and sending the current list of accessible network nodes to the target access and mobility management function entity.

Optionally, the method further comprises:

receiving a second registration request message for terminal registration sent by the access network entity;

determining a current list of accessible network nodes corresponding to the terminal based on the second registration request message;

and sending the current list of accessible network nodes to the terminal.

In a fourth aspect, an embodiment of the present application further provides a network registration method, which is applied to an access and mobility management function entity corresponding to a distributed node, including:

receiving a first registration request message sent by an access network entity and used for requesting a target network node, wherein the first registration request message is sourced from a terminal;

determining whether to receive the terminal based on the first registration request message;

and sending a first response message for determining a target network node to the access network entity based on whether the terminal is received.

Optionally, in a case that it is determined that the terminal is not received based on the first registration request message, the sending, based on whether the terminal is received, a first response message for determining a target network node to the access network entity includes:

sending the first registration request message to an access and mobility management function entity corresponding to the centralized node;

Receiving a second response message which is sent by the access and mobility management function entity and carries a target network node identifier or a candidate network node list for determining the target network node and corresponds to the centralized node;

and sending the first response message carrying the target network node identification candidate network node list to the access network entity.

Optionally, in the case that the first registration request message carries registration information and access inquiry indication information of a terminal, the determining whether to receive the terminal based on the first registration request message includes:

the sending, based on whether the terminal is received, a first response message for determining a target network node to the access network entity, including:

and sending the first response message carrying receiving information or rejecting information to the access network entity based on whether the terminal is received or not.

Optionally, the method further comprises:

And sending the current list of accessible network nodes to the terminal.

Optionally, the determining, based on the second registration request message, a current list of accessible network nodes corresponding to the terminal includes:

sending a creation context request message for requesting a current accessible network node list corresponding to the terminal to an access and mobility management functional entity corresponding to the centralized node;

and receiving the current list of accessible network nodes sent by the access and mobility management function entity corresponding to the centralized node.

In a fifth aspect, embodiments of the present application further provide a terminal, including a memory, a transceiver, and a processor, wherein:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; and a processor for reading the computer program in the memory and implementing the network registration method according to the first aspect.

In a sixth aspect, embodiments of the present application further provide an access network entity, including a memory, a transceiver, and a processor, where:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; and a processor for reading the computer program in the memory and implementing the network registration method according to the second aspect.

In a seventh aspect, embodiments of the present application further provide an access and mobility management function entity corresponding to a centralized node, including a memory, a transceiver, and a processor, where:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and implementing the network registration method according to the third aspect as described above.

In an eighth aspect, embodiments of the present application further provide an access and mobility management function entity corresponding to a distributed node, including a memory, a transceiver, and a processor, where:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; and a processor for reading the computer program in the memory and implementing the network registration method according to the fourth aspect.

In a ninth aspect, embodiments of the present application further provide a processor-readable storage medium storing a computer program for causing the processor to execute the network registration method according to the first aspect, the network registration method according to the second aspect, the network registration method according to the third aspect, or the network registration method according to the fourth aspect, as described above.

According to the network registration method and device, under the scene that the access network entity is connected with a plurality of network nodes at the same time, a proper network node can be selected for the terminal, so that the terminal can access the network node, and the network node can provide service for the terminal.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief description will be given below of the drawings that are needed in the embodiments or the prior art descriptions, and it is obvious that the drawings in the following description are some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic flow chart of a network registration method according to an embodiment of the present application;

FIG. 2 is a second flowchart of a network registration method according to an embodiment of the present disclosure;

FIG. 3 is a third flow chart of a network registration method according to an embodiment of the present disclosure;

FIG. 4 is a flowchart of a network registration method according to an embodiment of the present disclosure;

FIG. 5 is a flowchart of a network registration method according to an embodiment of the present disclosure;

Fig. 6 is a flowchart of a network registration method according to an embodiment of the present application;

fig. 7 is a flowchart of a network registration method according to an embodiment of the present application;

fig. 8 is a flowchart illustrating a network registration method according to an embodiment of the present application;

fig. 9 is one of schematic structural diagrams of a network registration device according to an embodiment of the present application;

fig. 10 is a second schematic structural diagram of a network registration device according to an embodiment of the present disclosure;

FIG. 11 is a third schematic diagram of a network registration device according to an embodiment of the present disclosure;

fig. 12 is a schematic diagram of a network registration device according to an embodiment of the present disclosure;

fig. 13 is a schematic structural diagram of a terminal according to an embodiment of the present application;

fig. 14 is a schematic structural diagram of an access network entity provided in an embodiment of the present application;

fig. 15 is a schematic structural diagram of an access and mobility management function entity corresponding to a centralized node provided in an embodiment of the present application;

fig. 16 is a schematic structural diagram of an access and mobility management function entity corresponding to a distributed node according to an embodiment of the present application.

Detailed Description

In the embodiment of the application, the term "and/or" describes the association relationship of the association objects, which means that three relationships may exist, for example, a and/or B may be represented: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

The term "plurality" in the embodiments of the present application means two or more, and other adjectives are similar thereto.

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The technical scheme provided by the embodiment of the application can be suitable for various systems, in particular to a sixth generation mobile communication standard (6th generation mobile networks,6G). For example, applicable systems may be fifth generation mobile communication technology (5th Generation Mobile Communication Technology,5G) systems, global system for mobile communications (global system of mobile communication, GSM) systems, code division multiple access (code division multiple access, CDMA) systems, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) general packet Radio service (general packet Radio service, GPRS) systems, long term evolution (long term evolution, LTE) systems, LTE frequency division duplex (frequency division duplex, FDD) systems, LTE time division duplex (time division duplex, TDD) systems, long term evolution-advanced (long term evolution advanced, LTE-a) systems, universal mobile systems (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX) systems, 5G New air interface (New Radio, NR) systems, and the like. Terminal devices and network devices are included in these various systems. Core network parts such as evolved packet system (Evloved Packet System, EPS), 5G system (5 GS) etc. may also be included in the system.

The terminal device according to the embodiments 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 device connected to a wireless modem, etc. The names of the terminal devices may also be different in different systems, for example in a 5G system, the terminal devices may be referred to as User Equipment (UE). The wireless terminal device may communicate with one or more Core Networks (CNs) via a radio access Network (Radio Access Network, RAN), which may be mobile terminal devices such as mobile phones (or "cellular" phones) and computers with mobile terminal devices, e.g., portable, pocket, hand-held, computer-built-in or vehicle-mounted mobile devices that exchange voice and/or data with the radio access Network. Such as personal communication services (Personal Communication Service, PCS) phones, cordless phones, session initiation protocol (Session Initiated Protocol, SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital assistants (Personal Digital Assistant, PDAs), and the like. The wireless terminal device may also be referred to as a system, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile), remote station (remote station), access point (access point), remote terminal device (remote terminal), access terminal device (access terminal), user terminal device (user terminal), user agent (user agent), user equipment (user device), and the embodiments of the present application are not limited.

The network device according to the embodiment of the present application may be a base station, where the base station may include a plurality of cells for providing services for a terminal. A base station may also be called an access point or may be a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or other names, depending on the particular application. The network device may be operable to exchange received air frames with internet protocol (Internet Protocol, IP) packets as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiments of the present application may be a network device (Base Transceiver Station, BTS) in a global system for mobile communications (Global System for Mobile communications, GSM) or code division multiple access (Code Division Multiple Access, CDMA), a network device (NodeB) in a wideband code division multiple access (Wide-band Code Division Multiple Access, WCDMA), an evolved network device (evolutional Node B, eNB or e-NodeB) in a long term evolution (long term evolution, LTE) system, a 5G base station (gNB) in a 5G network architecture (next generation system), a home evolved base station (Home evolved Node B, heNB), a relay node (relay node), a home base station (femto), a pico base station (pico), and the like. In some network structures, the network device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node, which may also be geographically separated.

Multiple-input Multiple-output (Multi Input Multi Output, MIMO) transmissions may each be made between a network device and a terminal device using one or more antennas, and the MIMO transmissions may be Single User MIMO (SU-MIMO) or Multiple User MIMO (MU-MIMO). The MIMO transmission may be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or may be diversity transmission, precoding transmission, beamforming transmission, or the like, depending on the form and number of the root antenna combinations.

To facilitate an understanding of the embodiments of the present application, the following terms or contexts are presented in connection with the embodiments of the present application:

an important trend in the development of 6G networks is the centralized and distributed network architecture. The network architecture primary design of 5G and the previous generations is controlled in a centralized way, and with the development of the network, the architecture design of the 6G network needs to consider a distributed architecture with the dual driving force of service scene and technical development, and the control of the architecture design of the 6G network is gradually evolved towards the distributed mode. With the distributed development of intelligent and cloud computing, new connections are required and new networks will also go to distributed.

The 6G is oriented to various scenes and network requirements of sky, day, land and sea, and a centralized network architecture cannot uniformly meet all scenes. To cope with this challenge, the 6G network architecture needs to go beyond centralized control, gradually evolve toward a distributed architecture, extend more network functions (such as authentication) to the network edge, and build a distributed homogeneous micro cloud unit with different functional levels. Thus, the 6G networking design may also be referred to as a distributed autonomous network (Distributed Autonomous Network, DAN) architecture or a distributed network architecture, the DAN network architecture being composed of distributed micro Cloud units (SCUs). The SCU is the most critical module unit forming the DAN architecture, can support distributed deployment in a network, has self-contained and autonomous capabilities, and has complete control and data forwarding functions. The multiple micro cloud units can form an autonomous micro network according to service requirements, and network services can be provided in a targeted manner according to requirements of specific service scenes, user scales, geographic environments and the like.

In a distributed network architecture of 6G, multiple micro networks of SCUs may be included, each micro network being a network node. Among the plurality of micro networks, there may be one centralized network node (hereinafter, may be simply referred to as a centralized node) and a plurality of distributed network nodes (hereinafter, may be simply referred to as distributed nodes).

However, there is only one network node in the 5G network architecture, and the current intra-domain registration procedure in 5GS includes:

step 1, a terminal Equipment (UE) sends a registration request message (Registration Request) to an access network entity;

step 2, the access network entity performs the selective access and mobility management function (Access and Mobility management Function, AMF) entity;

step 3, the access network entity sends a registration request message (Registration Request) to the new AMF entity;

step 4, the new AMF entity sends an AMF Communication UE context transmission request message (Namf_communication_ UEContextTransfer Request) to the previous AMF entity;

step 5, the previous AMF entity sends AMF Communication UE context transfer response message (Namf_communication_ UEContextTransfer Response) to the new AMF entity;

step 6, the new AMF entity sends an Identity Request message (Identity Request) to the UE;

And 7, the UE sends an identity response message (Identity Response) to the new AMF entity.

Currently, when a UE performs network registration, an access network entity does not involve selection of a network node (also referred to as a network element). However, the 6G network adopts a centralized and distributed cooperative decentralized hierarchical network, the 6G network is organized in a centralized and distributed cooperative and distributed autonomous mode, on one hand, more network functions are expanded to the network edge, on the other hand, the global core functions are centralized, and more complex services are supported through cloud network fusion and distributed cooperation. When an access network entity (such as a base station) connects multiple network nodes (including distributed nodes and centralized nodes) simultaneously, how to effectively select an appropriate network node to serve as a terminal is a problem that needs to be solved by the distributed network. Therefore, the embodiment of the application provides a network registration method which is applied to a distributed network architecture scene.

Fig. 1 is a schematic flow chart of a network registration method provided in an embodiment of the present application, and as shown in fig. 1, an embodiment of the present application provides a network registration method, an execution subject of which may be a terminal, for example, a mobile phone or the like. The method comprises the following steps:

Step 110, a first registration request message is sent to an access network entity, where the first registration request message is used to determine a target network node and a target access and mobility management function entity corresponding to the target network node.

In particular, the access network entity may connect multiple network nodes at the same time, it being understood that the access network entity may connect a centralized node and a distributed node, and illustratively, the access network entity may connect one centralized node and multiple distributed nodes, or may connect multiple centralized nodes and multiple distributed nodes.

The terminal sends a first registration request message to the access network entity, wherein the first registration request message can be used for requesting the terminal to the access network entity to determine a target network node for the terminal in a plurality of network nodes, the target network node can serve the network node of the terminal, and a target access and mobility management function entity corresponding to the target network node is determined.

The Access Network entity refers to a physical Network, such as a radio Access Network (Radio Access Network, RAN) entity or a (wired) Access Network (AN) entity, for implementing a bearer transport function between a user Network interface (User Network Jnterface, UNI) and a service node interface (service Network Interface, SNI).

The Access and mobility management function entity refers to an entity responsible for processing connection and mobility management tasks in a network node, and may be responsible for encryption and security of Non-Access-Stratum (NAS) messages, functions of registration, access, mobility, authentication, transparent transmission of short messages, and the like, and may also be responsible for allocation of evolved packet system Bearer identifiers (Evolved Packet System Bearer Identity, EPS Bearer ids) when interacting with an evolved packet system (Evolved Packet System, EPS) network, for example. The name of the access and mobility management function entity is not limited in the embodiments of the present application, as long as the network access and mobility management function can be implemented, for example, in a 5G network, the access and mobility management function entity may be referred to as an access and mobility management function (Access and Mobility management Function, AMF) entity, and in a 4G network, the access and mobility management function entity may be referred to as a mobility management (Mobility Management Entity, MME) entity.

According to the network registration method provided by the embodiment of the invention, under the scene that the access network entity is connected with a plurality of network nodes at the same time, a proper network node is selected for the terminal, so that the terminal can access the network node, and the network node can provide service for the terminal.

In particular, the target network node identification is used to identify the target network node, such as an Identity (ID) of the network node, etc.

The determining the terminal information of the target network node means that the target network node can be determined according to the terminal information carried by the first registration request message. The terminal information may be any one or a combination of the following: a globally unique temporary UE identity, a globally unique AMF identifier (Globally Unique AMF ID, GUAMI) and a permanent device identifier (Permanent Equipment Identifier, PEI) of the terminal.

The globally unique temporary UE identity may be referred to as a 5G globally unique temporary UE identity (5G Globally Unique Temporary UE Identity,5G-GUTI) in the 5G network and the globally unique AMF identifier may be referred to as a 5G GUAMI in the 5G network.

It should be understood that the embodiments of the present application do not limit the names as long as the identification of the UE or the identification of the access and mobility management function entity can be achieved.

It will be appreciated that the target network node identity and the terminal information used to determine the target network node should be valid, i.e. the target network node determined based on the target network node identity, or the target network node determined based on the terminal information, be able to serve the terminal. And if the target network node identification carried by the first registration request message is invalid, the target network node identification is regarded as not carrying the target network node identification, and similarly, if the target network node identification determined by the terminal information carried by the first registration request message is invalid, the target network node identification is regarded as not carrying the terminal information.

According to the network registration method provided by the embodiment of the application, the first registration request message carries the target network node identifier and/or the terminal information for determining the target network node, and the terminal can enable the access network entity to determine the access and mobility management function entity for the terminal by sending the first registration request message, so that the terminal can access the network node, and the network node can provide service for the terminal.

Specifically, the terminal side may pre-configure an accessible network node list, where the accessible network nodes may include network nodes allowing access, default network nodes, and other network nodes, and it should be understood that, in the accessible network nodes, the network node allowing access may be updated for the UE when the network node is accessed last time.

It should be appreciated that the preconfigured list of accessible network nodes may not conform to the current network due to network changes, etc., and thus there may be an invalid case based on the target network node identification determined by the preconfigured list of accessible network nodes.

Optionally, the method further comprises:

Specifically, after the terminal accesses the target access and mobility management function entity, the current list of accessible network nodes sent by the target access and mobility management function entity may be received. The current list of accessible network nodes may be determined by the target access and mobility management function entity according to a network node that is preconfigured in the network and to which the UE is allowed to access, and illustratively, subscription data of the UE may be stored in the network, and the target access and mobility management function entity may determine the current list of accessible network nodes of the UE according to the subscription data of the UE.

According to the network registration method provided by the embodiment of the invention, the terminal can update the accessible network node list, acquire the latest accessible network node list, be convenient for the terminal to directly select available network nodes when the network is switched next time, and improve the speed of accessing the terminal into the network.

Fig. 2 is a second flowchart of a network registration method provided in the embodiment of the present application, as shown in fig. 2, where an execution body of the network registration method may be an access network entity, and the method includes:

Step 210, receiving a first registration request message sent by a terminal;

specifically, the terminal sends a first registration request message to the access network entity, and the access network learns that the terminal requests to initiate registration to the network node according to the first registration request message. Since an access network entity may connect multiple network nodes simultaneously, a further determination of which network node to initiate registration with is needed.

Step 220, determining a target network node based on the first registration request message;

the first registration request message may indicate a target network node to which the terminal wants to access, and in case the first registration request message does not indicate the target network node to which the terminal wants to access or that the target network node to which the terminal wants to access is invalid, an appropriate network node (e.g. a network node capable of serving the terminal) may be selected as the target network node for the terminal by the access network entity.

Step 230, determining a target access and mobility management function entity corresponding to the target network node based on the pre-configured access and mobility management function information;

specifically, the access network entity side may be preconfigured with information of the access and mobility management functions, where the information of the access and mobility management functions may include a network node identifier to which each entity of the access and mobility management functions belongs.

Step 240, sending a second registration request message to the target access and mobility management function entity.

The second registration request message is used for requesting the access network entity to complete the registration process of the terminal from the target access and mobility management function entity.

For the description of the target network node identifier and the terminal information, reference is made to the above description, and details are not repeated here.

the target network node is determined based on the first response message.

Specifically, the case that the first registration request message does not carry the target network node identifier and/or the terminal information for determining the target network node includes any one or a combination of the following three cases:

the first case means that the first registration request message does not carry the target network node identifier and terminal information for determining the target network node;

the second case is that the access network entity needs to determine the target network node according to the target network node identifier, but the first registration request message does not carry the target network node identifier;

the third case is that the access network entity needs to determine the target network node according to the terminal information for determining the target network node, but the first registration request message does not carry the terminal information for determining the target network node.

In the above three cases, the access network entity cannot directly determine the target network node according to the first registration request message.

The first network node refers to a network node selected by an access network entity for determining a target network node. The first local policy may be preconfigured, for example, a network node with the minimum network load may be selected as the first network node according to the network load; depending on the network node type, a centralized node is selected as the first network node, for example. It should be understood that the foregoing is illustrative of the present application for ease of understanding and is not to be construed as limiting the present application in any way.

The access and mobility management function entity is used for being responsible for functions such as registration, access and mobility, etc., so that the first registration request message can be sent to the access and mobility management function entity corresponding to the first network node, and the access and mobility management function entity corresponding to the first network node is responsible for selecting the target network node.

The access and mobility management function entity corresponding to the first network node returns the selected target network node or information related to the selection of the target network node to the wireless access network entity through a first response message;

the radio access network entity determines the target network node based on the target network node carried by the first response message or information related to target network node selection.

According to the network registration method provided by the embodiment of the invention, under the condition that the access network entity cannot directly determine the target network node according to the first registration request message, the access network entity can select the first network node for determining the target network node and determine the target network node according to the first response message sent by the first network node, so that the terminal can access the network node, and the network node can provide service for the terminal under the condition that the access network entity is simultaneously connected with a plurality of network nodes.

Specifically, in the case that the access network entity selects the centralized node as the first network node, the access network entity sends a first registration request message of the terminal to the centralized node, where the first registration request message may carry registration information of the terminal, such as a service requirement, a terminal identity, and the like.

Since the access network entity sends the first registration request message to the centralized node, the centralized node can determine the location information of the terminal according to the sending end (access network entity) of the first registration request message.

The centralized node may determine the identity of the terminal through the first registration request message, determine the subscription data corresponding to the terminal based on the subscription data pre-configured in the network, combine other registration information (such as service requirements) of the terminal carried in the first registration request message, and select an appropriate network node as a target network node of the terminal based on the location information of the terminal determined by the access network entity, so as to provide services for the terminal.

Optionally, the centralized node may select one or more network nodes, where in the case that the centralized node selects one network node, the network node selected by the centralized node is the target network node; in the case where the centralized node selects a plurality of network nodes, the network node selected by the centralized node is a candidate network node.

The aggregation node may send the identity of the selected target network node (target network node identity) or a plurality of candidate network nodes (candidate network node list) to the access network entity via a first response message.

And under the condition that the first response message comprises the target network node identifier, the access network entity directly determines the target network node according to the target network node identifier, and accesses an access and mobility management functional entity corresponding to the target network node.

In the case that the first response message includes a candidate network node list for determining the target network node, the access network entity further needs to complete selection of the target network node in the candidate network node list according to a local policy, where the local policy may be preconfigured, for example, a network node with a minimum network load may be selected as the target network node according to a network load; and selecting a proper network node as a target network node according to the service requirement of the terminal. It should be understood that the foregoing is illustrative of the present application for ease of understanding and is not to be construed as limiting the present application in any way.

According to the network registration method provided by the embodiment of the invention, under the condition that the access network entity cannot directly determine the target network node according to the first registration request message, the centralized node can select the target network node or the candidate network node, so that the terminal can access the network node, and the network node can provide service for the terminal under the condition that the access network entity is simultaneously connected with a plurality of network nodes.

Specifically, in the case that the access network entity selects the distributed node as the first network node, the access network entity sends a first registration request message of the terminal to the distributed node, where the first registration request message may carry registration information of the terminal, such as a service requirement, a terminal identity, and the like.

Since the access network entity sends the first registration request message to the distributed node, the distributed node can determine the location information of the terminal according to the sending end (access network entity) of the first registration request message.

The distributed node may determine, by using the first registration request message, an identity of the terminal, determine, based on subscription data configured in advance in the network, subscription data corresponding to the terminal, and determine, in combination with other registration information (such as service requirements) of the terminal carried in the first registration request message, whether the distributed node can serve the terminal based on location information of the terminal determined by the access network entity, and the like, if the distributed node can serve the terminal, receive the terminal, send a first response message to the access network entity, and carry receiving information in the first response message, so that the access network entity can determine that the distributed node is the target network node.

And if the distributed node can not serve the terminal, the first registration request message is sent to the self-connected centralized node. And selecting a proper network node as a target network node of the terminal by the centralized node to provide service for the terminal.

The centralized node may send an identification of the selected target network node (target network node identification) or a plurality of candidate network nodes (candidate network node list) to the distributed node via a second response message.

The distributed node then sends the target network node identification or the candidate network node list to the access network entity through the first response message.

According to the network registration method provided by the embodiment of the invention, under the condition that the access network entity cannot directly determine the target network node according to the first registration request message, the distributed node can select the target network node or the candidate network node, so that the terminal can access the network node, and the network node can provide service for the terminal under the condition that the access network entity is simultaneously connected with a plurality of network nodes.

Specifically, in the case that the access network entity selects a plurality of network nodes as the first network node, the access network entity sends a first registration request message of the terminal to each network node, where the first registration request message may carry registration information of the terminal and the access inquiry indication information; the registration information of the terminal may include registration-related information such as service requirements, terminal identity, etc., and the access inquiry indication information is used to inquire of each network node whether the terminal can be received.

Since the access network entity sends the first registration request message to each network node, each network node may determine location information of the terminal according to a sender (access network entity) of the first registration request message.

Each network node may determine, by using the first registration request message, an identity of the terminal, determine, based on subscription data pre-configured in the network, subscription data corresponding to the terminal, and determine, in combination with other registration information (such as a service requirement) of the terminal carried in the first registration request message, whether the network node is capable of serving the terminal based on location information of the terminal determined by the access network entity, or the like, and if the network node is capable of serving the terminal, send a first response message including the received information to the access network entity; and if the first response message cannot be received, sending the first response message containing the rejection information to the access network entity.

And taking the network node which transmits the received information as a candidate network node, and determining the target network node in the candidate network node based on a second local strategy. The second local policy may be preconfigured, for example, a network node with the smallest network load may be selected as a target network node according to the network load; and selecting a proper network node as a target network node according to the service requirement of the terminal. It should be understood that the foregoing is illustrative of the present application for ease of understanding and is not to be construed as limiting the present application in any way.

The access network entity sends a first registration request message to the network node a, the network node B and the network node C, respectively, the network node a sends the receiving information through a first response message, the network node B sends the rejecting information through the first response message, and the network node C sends the receiving information through the first response message. The access network entity selects a target network node among network node a and network node C. The load of the network node A is larger than that of the network node C, and the second local strategy is to select the network node with the smallest current load as the target network node, and then select the network node C as the target network node.

According to the network registration method provided by the embodiment of the invention, under the condition that the access network entity cannot directly determine the target network node according to the first registration request message, the target network node can be determined according to whether each network node can receive the terminal, and the purpose of selecting a proper network node for the terminal under the condition that the access network entity is simultaneously connected with a plurality of network nodes is achieved, so that the terminal can access the network node, and the network node provides service for the terminal.

Fig. 3 is a third flowchart of a network registration method provided in the embodiment of the present application, as shown in fig. 3, where an execution body of the network registration method may be an access and mobility management functional entity corresponding to a centralized node, and the method includes:

Step 310, receiving a first registration request message sent by a first request entity and used for requesting a target network node;

specifically, for the case that the first request entity is an access network entity, the access network entity selects a centralized node as the first network node, and requests the target network node from the centralized node.

The condition that the first request entity is an access and mobility management functional entity corresponding to the distributed node refers to that the distributed node cannot serve a terminal when the access network entity selects the distributed node as the first network node, and the access and mobility management functional entity corresponding to the distributed node requests the centralized node for the target network node.

Step 320, sending a response message for determining a target network node to the first requesting entity;

specifically, when the first request entity is an access network entity, the access and mobility management function entity corresponding to the centralized node sends a first response message for determining the target network node to the access network entity.

And when the first request entity is a distributed node, the access and mobility management function entity corresponding to the centralized node sends a second response message for determining the target network node to the access and mobility management function entity corresponding to the distributed node. Alternatively, the access and mobility management function entity corresponding to the distributed node may send a first response message for determining the target network node to the access network entity.

It will be appreciated that the response message comprises a first response message and a second response message, the response messages being used to determine the target network node, e.g. may comprise a target network node identity or a list of candidate network nodes for determining the target network node.

It should be understood that in a network, the number of centralized network nodes is 1 or more. The centralized node has data of all distributed nodes in the management range, such as subscription data of the distributed nodes, and the data stored by the distributed nodes includes information such as UE context information (including context information of session), subscription data of part of UEs, and the like.

Specifically, the first registration request message is initially initiated by the terminal and sent to the access network entity, which forwards the first registration request message to the centralized node or the distributed node.

According to the network registration method provided by the embodiment of the invention, under the condition that the first request entity cannot directly determine the target network node according to the first registration request message, the centralized node sends the first response message for determining the target network node to the first request entity, so that a proper network node is selected for the terminal under the condition that the access network entity is simultaneously connected with a plurality of network nodes, the terminal can access the network node, and the network node provides services for the terminal.

Specifically, the first registration request message may carry registration information of the terminal, such as a service requirement, a terminal identity, and the like. The centralized node may also determine location information of the terminal according to the first registration request message.

The concentration node may send an identification of the selected target network node (target network node identification) or a plurality of candidate network nodes (candidate network node list) to the first requesting entity by means of a response message.

According to the network registration method provided by the embodiment of the invention, under the condition that the first request entity cannot directly determine the target network node according to the first registration request message, the centralized node can select the target network node or the candidate network node, and finally, under the condition that the access network entity is simultaneously connected with a plurality of network nodes, the terminal can select the appropriate network node, so that the terminal can access the network node, and the network node can provide service for the terminal.

Specifically, the first registration request message may carry registration information of the terminal and the access inquiry indication information; the registration information of the terminal may include registration-related information such as service requirements, terminal identity, etc., and the access inquiry indication information is used to inquire of each network node whether the terminal can be received.

The centralized node may determine location information of the terminal according to a sender (access network entity) of the first registration request message.

The centralized node may determine, by using the first registration request message, an identity of the terminal, determine, based on subscription data configured in advance in the network, subscription data corresponding to the terminal, and determine, in combination with other registration information (such as a service requirement) of the terminal carried in the first registration request message, whether the centralized node can serve the terminal based on location information of the terminal determined by the access network entity, or the like, and if the centralized node can serve the terminal, send a first response message including the received information to the access network entity; and if the first response message cannot be received, sending the first response message containing the rejection information to the access network entity.

According to the network registration method provided by the embodiment of the invention, the centralized node can send the first response message containing the receiving information or the rejecting information to the access network entity according to whether the centralized node can serve the terminal or not, so that the access network entity can select the target network node from the network nodes capable of serving the terminal based on the first response message, and the purpose of selecting the proper network node for the terminal under the condition that the access network entity is simultaneously connected with a plurality of network nodes is achieved, so that the terminal can access the network node, and the network node provides service for the terminal is achieved.

Optionally, the method further comprises:

Specifically, the target access and mobility management functional entity is an access mobility management functional entity currently serving the terminal, and after the target access and mobility management functional entity completes the registration process of the terminal, the target access and mobility management functional entity can determine to send a create context request message to the centralized node in the registration process based on a local policy, where the create context request message is used to obtain a current list of accessible network nodes of the terminal, that is, network nodes allowed to access at present.

It should be appreciated that in this case the access and mobility management function corresponding to the centralized node is not the target access and mobility management function.

According to the network registration method provided by the embodiment of the invention, the access and mobility management function entity corresponding to the centralized node can provide the current accessible network node list corresponding to the terminal for the target access and mobility management function entity, so that the update of the accessible network node list of the terminal is realized, the terminal can acquire the latest accessible network node list, the available network nodes can be directly selected when the terminal is switched to the network next time, and the network access speed of the terminal is improved.

Optionally, the method further comprises:

and sending the current list of accessible network nodes to the terminal.

Specifically, in this case, the access and mobility management function entity corresponding to the centralized node is a target access and mobility management function entity. The second registration request message is used for requesting the access network entity to complete the registration process of the terminal from the access and mobility management function entity corresponding to the centralized node.

The target access and mobility management function entity completes the registration process of the terminal based on the second registration request message.

The second registration request message may also carry registration information of the terminal. The access and mobility management function entity corresponding to the centralized node determines based on the local policy, and obtains the current accessible network node list of the terminal, namely the network node which is allowed to be accessed at present, based on the subscription data of the terminal and the related network policy in the registration process. And sending the current list of accessible network nodes to the terminal.

According to the network registration method provided by the embodiment of the invention, the access and mobility management function entity corresponding to the centralized node can provide the current accessible network node list corresponding to the terminal, so that the accessible network node list of the terminal is updated, the terminal can acquire the latest accessible network node list, the available network nodes can be directly selected when the terminal is switched to the network next time, and the network access speed of the terminal is improved.

Fig. 4 is a flowchart of a network registration method provided in the embodiment of the present application, as shown in fig. 4, where an execution body of the network registration method may be an access and mobility management function entity corresponding to a distributed node, and the method includes:

step 410, receiving a first registration request message sent by an access network entity and used for requesting a target network node;

step 420, determining whether to receive the terminal based on the first registration request message;

the first registration request message may carry registration information of the terminal, such as a service requirement, a terminal identity, and the like.

The distributed node may determine, by using the first registration request message, an identity of the terminal, determine, based on subscription data pre-configured in the network, subscription data corresponding to the terminal, and determine, in combination with other registration information (such as a service requirement) of the terminal carried in the first registration request message, whether the distributed node is capable of serving the terminal based on location information of the terminal determined by the access network entity, and so on.

Step 430, based on whether the terminal is received, a first response message for determining a target network node is sent to the access network entity.

If the terminal can be served, the terminal is received, a first response message is sent to the access network entity, and the first response message carries the received information, so that the access network entity can determine that the distributed node is the target network node. If the distributed node cannot serve the terminal, information related to the target network node can be provided for the access network entity through other methods. Such as the first registration request message may be sent to the self-connected centralized node. And selecting a proper network node as a target network node of the terminal by the centralized node to provide service for the terminal.

and sending the first response message carrying the target network node identification or the candidate network node list to the access network entity.

For the method for determining the target network node identifier or the candidate network node list for determining the target network node by the access and mobility management function entity corresponding to the centralized node, reference is made to the above embodiments, and details are not repeated here.

the first registration request message may carry registration information of the terminal and the access inquiry indication information; the registration information of the terminal may include registration-related information such as service requirements, terminal identity, etc., and the access inquiry indication information is used to inquire of each network node whether the terminal can be received.

The access and mobility management function entity corresponding to the distributed node may determine the identity of the terminal through the first registration request message, determine the subscription data corresponding to the terminal based on the subscription data pre-configured in the network, and determine whether the terminal can serve the terminal by combining other registration information (such as service requirements) of the terminal carried in the first registration request message, and based on the location information of the terminal determined by the access network entity, etc.

If the terminal can be served, a first response message containing the received information is sent to an access network entity; and if the first response message cannot be received, sending the first response message containing the rejection information to the access network entity.

According to the network registration method provided by the embodiment of the invention, the distributed node can send the first response message containing the receiving information or the rejecting information to the access network entity according to whether the distributed node can serve the terminal or not, so that the access network entity can select the target network node from the network nodes capable of serving the terminal based on the first response message, and the purpose of selecting the proper network node for the terminal under the condition that the access network entity is simultaneously connected with a plurality of network nodes is achieved, so that the terminal can access the network node, and the network node provides service for the terminal is achieved.

Optionally, the method further comprises:

and sending the current list of accessible network nodes to the terminal.

Specifically, in this case, the access and mobility management function entity corresponding to the distributed node is a target access and mobility management function entity. The second registration request message is used for requesting the access network entity to complete the registration process of the terminal from the distributed corresponding access and mobility management function entity.

The target access and mobility management function completes the registration process of the terminal based on the second registration request message.

The second registration request message may also carry registration information of the terminal. The distributed corresponding access and mobility management functional entity determines based on the local policy, and obtains the current accessible network node list of the terminal, namely the network node which is allowed to be accessed at present, based on the subscription data of the terminal and related network policies in the registration process. And sending the current list of accessible network nodes to the terminal.

Specifically, the access and mobility management functional entity corresponding to the distributed node is a target access and mobility management functional entity. The access and mobility management function entity corresponding to the distributed node completes the registration process of the UE, and sends a request message for creating the context to the centralized node in the registration process based on the local policy determination, so as to acquire the network node which is allowed to be accessed by the UE at present.

According to the network registration method provided by the embodiment of the invention, the access and mobility management function entity corresponding to the distributed node can provide the current accessible network node list corresponding to the terminal, so that the accessible network node list of the terminal is updated, the terminal can acquire the latest accessible network node list, the available network nodes can be directly selected when the terminal is switched to the network next time, and the network access speed of the terminal is improved.

Fig. 5 is a fifth flowchart of a network registration method provided in the embodiment of the present application, as shown in fig. 5, where the method is applied to a scenario where an access network entity performs target network node selection based on information carried by a UE, and includes:

step 0: the information to be configured in advance is specifically as follows:

step 0-1, firstly, configuring a network node which is allowed to be accessed by the UE in a network, such as configuring the network node which is allowed to be accessed by a terminal in the form of subscription data;

step 0-2, configuring network nodes at the UE side, wherein the network nodes comprise network nodes allowing access, default network nodes and the like;

and step 0-3, the access and mobility management function information configured at the access network entity side comprises the network node identification to which the access and mobility management function information belongs.

Step 1, a terminal sends a first registration request message to an access network entity, wherein the carried information comprises a requested target network node identifier and/or terminal information, and the terminal information can comprise information such as a UE identifier, an effective globally unique temporary UE identifier, an effective globally unique AMF identifier, and configured default network node identifier information (list). The target network node identifier may include a target network node identifier or may be a list of network node identifiers of target network nodes.

Step 2, selecting a target network node: when the access network entity receives the first registration request message of the UE, based on the effective target network node information or other effective terminal information carried in the first registration request message, such as a UE identifier, an effective globally unique temporary UE identifier, an effective globally unique AMF identifier, or further combined with information such as a load or a local policy of the network node, a corresponding network node is selected as the target network node. And then selecting an access and mobility management function entity corresponding to the target network node identifier based on the locally configured access and mobility management function information and the target network node identifier.

And step 3, the access network entity sends a second registration request message to the selected target access and mobility management functional entity and carries the UE identification or effective global unique temporary identification, the requested network node identification information, the UE position information and other information.

And step 4, the target access and mobility management function entity receiving the second registration request message completes the registration process of the UE.

In case that the current network node of the UE allowing access is determined by the centralized node, performing step 5 and step 6; when the current allowed access network node of the UE is determined by the target network node, step 7 is performed, and step 5 and step 6 are omitted.

When the network node to which the UE is currently allowed access is determined by the centralized node:

and 5, if the target access and mobility management functional entity cannot determine the current accessible network node list of the terminal based on the local policy, sending a context creation request message to the centralized node, wherein the carried information comprises the information such as the UE identifier or the effective globally unique temporary UE identifier, the current target network node identifier, the position information of the UE and the like.

And 6, the centralized node determines a current accessible network node list of the UE based on the subscription data of the UE, the position information of the UE, related network strategies and the like. The access and mobility management function entity corresponding to the centralized node sends a create context response message to the target access and mobility management function entity, wherein the create context response message can carry information such as a current accessible network node list of the UE.

When the network node currently allowed to access by the UE is determined by the target network node:

and 7, the target network node determines the current accessible network node list of the UE according to the acquired subscription data of the UE, the position information of the UE, related network strategies and the like.

Step 8, finally, the access and mobility management function entity corresponding to the target network node sends a registration acceptance message to the UE, where the registration acceptance message may carry: current list of accessible network nodes, globally unique temporary UE identity, etc.

Note that: the network nodes may be distributed network nodes or centralized network nodes. The description is not intended to be limiting.

Fig. 6 is a sixth flowchart of a network registration method provided in the embodiment of the present application, as shown in fig. 6, where the method is applied to a scenario where an access network entity is connected to a centralized node, and the centralized node is selected to be a first network node based on a first local policy, and includes:

step 0: the information to be configured in advance is specifically as follows:

Step 1, a terminal sends a first registration request message to an access network entity, wherein the carried information comprises a requested target network node identifier and/or terminal information, and the terminal information can comprise information such as a UE identifier, an effective globally unique temporary UE identifier, an effective globally unique AMF identifier, and configured default network node identifier information (list). Wherein the target network node identification may comprise a target network node identification or a list of network nodes that may be target network nodes.

Step 2a, when the access network entity receives the first registration request message of the UE, based on the effective target network node identifier carried in the first registration request message, or other effective terminal information, such as the UE identifier or the effective globally unique temporary UE identifier, the corresponding target network node cannot be selected. The access network entity may select the centralized node as the first network node based on the first local policy and send a first registration request message to an access and mobility management function entity of the centralized node. The carried information includes the requested network node identification information, the UE identification or the valid globally unique temporary UE identification, the configured default network node identification (list) information, the location information of the UE, etc.

Step 2b, after the centralized node receives the first registration request message, selecting a proper network (list) based on the subscription data, the requested network node identifier, the network policy, the service requirement and the location information, and sending the selected target network node (or candidate network node list) to the access network entity through the first response message, wherein the included information comprises the candidate target network node identifier or candidate network node list, and also can comprise information such as network node load.

And 3, the access network entity selects a proper network node as a target network node based on the information obtained in the step 2, based on the local strategy, the load of the network node and the like, and sends a second registration request message to an access mobility management function entity of the target network node, wherein the carried information comprises UE registration information and UE position information.

And (3) injection: the network nodes may be distributed network nodes or centralized network nodes. The description is not intended to be limiting.

Fig. 7 is a flowchart of a network registration method provided by an embodiment of the present application, and as shown in fig. 7, the embodiment of the present application provides a network registration method, where the method is applied to a scenario that an access network entity selects a distributed node as a first network node based on a first local policy, and includes:

step 0: the information to be configured in advance is specifically as follows:

Step 2a, when the access network entity receives the first registration request message of the UE, based on the effective target network node identifier carried in the first registration request message, or other effective terminal information, such as the UE identifier or the effective globally unique temporary UE identifier, the corresponding target network node cannot be selected. The access network entity may select the distributed node as the first network node based on the first local policy and send a first registration request message to an access and mobility management function entity of the distributed node.

Step 3, the distributed network node serving as the first network node determines whether the distributed network node can serve the UE or not based on subscription data or load conditions, and if the distributed network node can serve the UE, the distributed network node receives the subscription data or the load conditions; and if the UE cannot be served, sending a first registration request message to the centralized node. After receiving the first registration request message, the access and mobility management functional entity corresponding to the centralized node selects a target network node or a candidate network node list based on subscription data, service demand, location information and network node load, and sends a second response message to the access and mobility management functional entity corresponding to the distributed node, wherein the second response message carries the target network node or the candidate network node list.

Step 2b, the distributed node sends the target network node or the candidate network node list selected by the centralized node to the access network entity through the first response message, and can also send information such as network node load and the like to the access network entity.

And 4, the access network entity determines the target network node according to the target network node or the candidate network node list and combining the information such as the local strategy, the network node load and the like, selects the access and mobility management function entity corresponding to the target network node, and sends a second registration request message to the selected access and mobility management function entity of the target network node.

And step 5, the target access and mobility management function entity receiving the second registration request message completes the registration process of the UE.

When the network node which is allowed to be accessed by the UE at present is determined by the centralized node, executing the step 6 and the step 7; when the network node currently allowed to access by the UE is determined by the target network node, step 8 is performed and step 6 and step 7 are omitted.

and 6, if the target access and mobility management functional entity cannot determine the current accessible network node list of the terminal based on the local policy, sending a context creation request message to the centralized node, wherein the carried information comprises the information such as the UE identifier or the effective globally unique temporary UE identifier, the current target network node identifier, the position information of the UE and the like.

And 7, the centralized node determines a current accessible network node list of the UE based on the subscription data of the UE, the position information of the UE, related network strategies and the like. The access and mobility management function entity corresponding to the centralized node sends a create context response message to the target access and mobility management function entity, wherein the create context response message can carry information such as a current accessible network node list of the UE.

and 8, the target network node determines a current accessible network node list of the UE according to the acquired subscription data of the UE, the position information of the UE, related network strategies and the like.

Step 9, finally, the access and mobility management function entity corresponding to the target network node sends a registration acceptance message to the UE, where the registration acceptance message may carry: current list of accessible network nodes, globally unique temporary UE identity, etc.

Fig. 8 is a flowchart of a network registration method provided in the embodiment of the present application, as shown in fig. 8, where the method is applied to an access network entity to select a plurality of network nodes as first network nodes, and then determine a scenario of a target network node according to a response situation of the first network nodes, where the method includes:

Step 0: the information to be configured in advance is specifically as follows:

Step 2, when the access network entity receives the first registration request message of the UE, based on the effective target network node identifier carried in the first registration request message, or other effective terminal information, such as the UE identifier or the effective globally unique temporary UE identifier, the corresponding target network node cannot be selected. The access network entity may select a plurality of network nodes as the first network nodes based on the information such as the first local policy or the network node load, and send a first registration request message to the access and mobility management functional entities of the first network nodes, where the information carried by the first registration request message includes information such as registration information and access query indication.

And step 3, determining whether the first registration request message can be accepted or not by the access and mobility management function entities of the first network nodes according to the access inquiry indication information. And then, based on the first registration request message and the UE position information, determining whether the UE can be served or not, and sending the determined result to an access network entity through a first response message, wherein the carried information comprises receiving information or rejecting information, and the first response message can also carry information such as network node identification, load information and the like.

And 4, the access network entity determines the network node capable of serving the UE as a target network node based on the information received in the step 3 and based on the information such as the second local configuration, the network node load and the like. And sending a second registration request message to the target access and mobility management function entity of the selected target network node.

When the network node which is allowed to be accessed by the UE at present is determined by the centralized node, executing the step 5 and the step 6; when the network node currently allowed to access by the UE is determined by the target network node, step 7 is performed, and step 5 and step 6 are omitted.

The apparatus provided in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

Referring to fig. 9, fig. 9 is one of schematic structural diagrams of a network registration device provided in an embodiment of the present application, where the embodiment of the present application provides a network registration device, which may be applied to a terminal, including:

a first sending unit 910, configured to send a first registration request message to an access network entity, where the first registration request message is used to determine a target network node and a target access and mobility management function entity corresponding to the target network node.

Optionally, the apparatus further comprises:

and the first receiving unit is used for receiving the current list of the accessible network nodes sent by the target access and mobility management functional entity.

The method and the device provided in the embodiments of the present application are based on the same application conception, and because the principle of solving the problem by the network registration method and the network registration device is similar and the same technical effect can be achieved, the implementation of the device and the method can be mutually referred to, and the repetition is omitted.

Referring to fig. 10, fig. 10 is a second schematic structural diagram of a network registration device provided in an embodiment of the present application, where the embodiment of the present application provides a network registration device, which may be applied to an access network entity, including:

a second receiving unit 1010, configured to receive a first registration request message sent by a terminal;

a second determining unit 1020, configured to determine a target network node based on the first registration request message;

the second determining unit 1020 is further configured to determine a target access and mobility management function entity corresponding to the target network node based on the pre-configured access and mobility management function information;

A second sending unit 1030 is configured to send a second registration request message to the target access and mobility management function entity.

the second determining unit 1020 is configured to determine a first network node based on the first registration request message and a first local policy;

the second sending unit 1030 is configured to send the first registration request message to an access and mobility management function entity corresponding to the first network node;

the second receiving unit 1010 is configured to receive a first response message sent by an access and mobility management function entity corresponding to the first network node;

the second determining unit 1020 is configured to determine the target network node based on the first response message.

Optionally, in the case that the first network node is a distributed node, the second determining unit 1020 is configured to determine, based on the first registration request message, a target network node, including any one of the following:

the second determining unit 1020 is configured to determine, based on the first response message, that the distributed node is the target network node;

the second determining unit 1020 is configured to determine, based on the first response message carrying the target network node identifier, the target network node;

the second determining unit 1020 is configured to determine the target network node based on the first response message carrying the candidate network node list;

The second determining unit 1020, configured to determine the target network node based on the first response message, includes:

the second determining unit 1020 is configured to determine, in a network node that sends the received information, the target network node based on a second local policy.

Referring to fig. 11, fig. 11 is a third schematic structural diagram of a network registration device provided in an embodiment of the present application, where the embodiment of the present application provides a network registration device, which may be applied to an access and mobility management function entity corresponding to a centralized node, and includes:

a third receiving unit 1110, configured to receive a first registration request message sent by a first requesting entity and used for requesting a target network node;

a third sending unit 1120, configured to send a response message for determining a target network node to the first requesting entity;

Optionally, the apparatus further comprises:

a third determining unit, configured to determine a target network node identifier or a candidate network node list for determining the target network node based on the first registration request message;

the third sending unit 1120, configured to send, to the first requesting entity, a response message for determining a target network node includes:

the third sending unit 1120 is configured to send a response message carrying the target network node identifier or a candidate network node list for determining the target network node to the first requesting entity.

Optionally, in the case that the first request entity is an access network entity and the first registration request message carries registration information and access inquiry indication information of the terminal, the third determining unit is further configured to: determining whether to receive the terminal based on the registration information and the access inquiry instruction information;

the third sending unit 1120, configured to send a response message for determining a target network node to the first requesting entity, includes:

the third sending unit 1120 is configured to send, to the first requesting entity, a first response message carrying receiving information or rejecting information based on whether the terminal is received.

Optionally, the third receiving unit 1110 is further configured to receive a create context request message sent by the target access and mobility management function entity and used for requesting a current list of accessible network nodes corresponding to the terminal;

the third sending unit 1120 is configured to send the current list of accessible network nodes to the target access and mobility management function entity.

Optionally, the third receiving unit 1110 is further configured to receive a second registration request message sent by the access network entity and used for terminal registration;

the third determining unit is further configured to determine a current list of accessible network nodes corresponding to the terminal based on the second registration request message;

the third sending unit 1120 is further configured to send the current list of accessible network nodes to the terminal.

Referring to fig. 12, fig. 12 is a fourth schematic structural diagram of a network registration device provided in an embodiment of the present application, where the embodiment of the present application provides a network registration device, which may be applied to an access and mobility management function entity corresponding to a distributed node, and includes:

A fourth receiving unit 1210, configured to receive a first registration request message sent by an access network entity and used for requesting a target network node, where the first registration request message originates from a terminal;

a fourth determining unit 1220 for determining whether to receive the terminal based on the first registration request message;

a fourth sending unit 1230 is configured to send a first response message for determining a target network node to the access network entity based on whether the terminal is received.

the fourth sending unit 1230 is configured to send the first registration request message to an access and mobility management function entity corresponding to the centralized node;

the fourth receiving unit 1210 is configured to receive a second response message carrying a target network node identifier or a candidate network node list for determining the target network node sent by an access and mobility management function entity corresponding to the centralized node;

the fourth sending unit 1230 sends the first response message carrying the target network node identifier or the candidate network node list to the access network entity.

the fourth determining unit 1220 is configured to determine whether to receive the terminal based on the registration information and the access inquiry instruction information;

the fourth sending unit 1230 is configured to send, to the access network entity, a first response message for determining a target network node based on whether the terminal is received, including:

the fourth sending unit 1230 is configured to send, to the access network entity, the first response message carrying reception information or rejection information, based on whether the terminal is received.

Optionally, the fourth receiving unit 1210 is further configured to receive a second registration request message sent by the access network entity and used for terminal registration;

the fourth determining unit 1220 is further configured to determine, based on the second registration request message, a current list of accessible network nodes corresponding to the terminal;

the fourth sending unit 1230 is further configured to send the current list of accessible network nodes to the terminal.

the fourth sending unit 1230 is configured to send, to an access and mobility management function entity corresponding to the centralized node, a create context request message for requesting a current list of accessible network nodes corresponding to the terminal;

the fourth sending unit 1230 is configured to receive the current list of accessible network nodes sent by the access and mobility management function entity corresponding to the centralized node.

It should be noted that, in the embodiment of the present application, the division of the units is schematic, which is merely a logic function division, and other division manners may be implemented in actual practice. In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a processor-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution, in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to perform all or part of the steps of the methods described in 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 (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

Fig. 13 is a schematic structural diagram of a terminal provided in an embodiment of the present application, and as shown in fig. 13, the terminal includes a memory 1320, a transceiver 1300 and a processor 1310; wherein the processor 1310 and the memory 1320 may also be physically separate.

A memory 1320 for storing a computer program; a transceiver 1300 for transceiving data under the control of the processor 1310; the processor 1310 is configured to execute any of the operations corresponding to the network registration method applied to the terminal provided in the embodiment of the present application according to the obtained executable instructions by calling a computer program stored in the memory 1320, for example:

In particular, transceiver 1300 is configured to receive and transmit data under the control of processor 1310.

Wherein in FIG. 13, bus interface 1340 may include any number of interconnected buses and bridges, with the various circuits of the one or more processors, represented by processor 1310, and the memory, represented by memory 1320, being coupled together. Bus interface 1340 may also connect together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. Transceiver 1300 may be a number of elements, i.e., including a transmitter and a receiver, providing a means for communicating with various other apparatus over transmission media, including wireless channels, wired channels, optical cables, etc. For different terminals, a user interface 1330 may also be included, the user interface 1330 may also be an interface capable of interfacing with an inscribed desired device, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 1310 is responsible for managing the bus architecture and general processing, and the memory 1320 may store data used by the processor 1310 in performing operations.

Alternatively, the processor 1310 may be a CPU (central processing unit), ASIC (Application Specific Integrated Circuit ), FPGA (Field-Programmable Gate Array, field programmable gate array) or CPLD (Complex Programmable Logic Device ), and the processor may also employ a multi-core architecture.

Optionally, the operations further comprise:

It should be noted that, the terminal provided in this embodiment of the present application can implement all the method steps implemented in the network registration method embodiment and achieve the same technical effects, and specific details of the same parts and beneficial effects as those of the method embodiment in this embodiment are not described here.

Fig. 14 is a schematic structural diagram of an access network entity provided in an embodiment of the present application, and as shown in fig. 14, the access network entity includes a memory 1420, a transceiver 1400, and a processor 1410.

Wherein the memory 1420 is used for storing a computer program; a transceiver 1400 for transceiving data under the control of the processor 1410; a processor 1410 for reading the computer program in the memory 1420 and performing the following operations:

receiving a first registration request message sent by a terminal;

In particular, the transceiver 1400 is configured to receive and transmit data under the control of the processor 1410.

Where in FIG. 14, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by the processor 1410 and various circuits of the memory represented by the memory 1420, are linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. Bus interface 1430 provides an interface. Transceiver 1400 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium, including wireless channels, wired channels, optical cables, etc. The processor 1410 is responsible for managing the bus architecture and general processing, and the memory 1420 may store data used by the processor 1410 in performing operations.

The processor 1410 may be a central processing unit (Central Processing Unit, CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a Field programmable gate array (Field-Programmable Gate Array, FPGA), or a complex programmable logic device (Complex Programmable Logic Device, CPLD), and the processor may also employ a multi-core architecture.

the target network node is determined based on the first response message.

It should be noted that, the access network entity provided in this embodiment of the present application can implement all the method steps implemented by the network registration method embodiment and achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those of the method embodiment in this embodiment are omitted.

Fig. 15 is a schematic structural diagram of an access and mobility management function entity corresponding to a centralized node according to an embodiment of the present application, as shown in fig. 15, where the access and mobility management function entity corresponding to the centralized node includes a memory 1520, a transceiver 1500, and a processor 1510.

Wherein the memory 1520 is used for storing a computer program; a transceiver 1500 for transceiving data under the control of the processor 1510; a processor 1510 for reading the computer program in the memory 1520 and performing the following operations:

In particular, the transceiver 1500 is configured to receive and transmit data under the control of the processor 1510.

Wherein in fig. 15, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 1510 and various circuits of memory represented by memory 1520, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. Bus interface 1530 provides an interface. Transceiver 1500 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium, including wireless channels, wired channels, optical cables, etc. The processor 1510 is responsible for managing the bus architecture and general processing, and the memory 1520 may store data used by the processor 1510 in performing operations.

The processor 1510 may be a central processing unit (Central Processing Unit, CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a Field programmable gate array (Field-Programmable Gate Array, FPGA), or a complex programmable logic device (Complex Programmable Logic Device, CPLD), or may employ a multi-core architecture.

Optionally, in the case that the first request entity is an access network entity and the first registration request message carries registration information and access inquiry indication information of the terminal, the operations further include:

Optionally, the operations further comprise:

and sending the current list of accessible network nodes to the terminal.

It should be noted that, the access and mobility management functional entity corresponding to the centralized node provided in the embodiment of the present application can implement all the method steps implemented in the embodiment of the network registration method, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those of the embodiment of the method in the embodiment are omitted herein.

Fig. 16 is a schematic structural diagram of an access and mobility management function entity corresponding to a distributed node according to an embodiment of the present application, as shown in fig. 16, where the access and mobility management function entity corresponding to the distributed node includes a memory 1620, a transceiver 1600, and a processor 1610.

Wherein the memory 1620 is configured to store a computer program; a transceiver 1600 for receiving and transmitting data under the control of the processor 1610; a processor 1610 configured to read the computer program in the memory 1620 and perform the following operations:

In particular, transceiver 1600 is configured to receive and transmit data under the control of processor 1610.

Wherein in fig. 16, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 1610, and various circuits of memory represented by memory 1620, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. Bus interface 1630 provides an interface. The transceiver 1600 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over transmission media, including wireless channels, wired channels, optical cables, and the like. The processor 1610 is responsible for managing the bus architecture and general processing, and the memory 1620 may store data used by the processor 1610 in performing operations.

Processor 1610 may be a central processing unit (Central Processing Unit, CPU), application specific integrated circuit (Application Specific Integrated Circuit, ASIC), field programmable gate array (Field-Programmable Gate Array, FPGA) or complex programmable logic device (Complex Programmable Logic Device, CPLD), or it may employ a multi-core architecture.

Optionally, the operations further comprise:

and sending the current list of accessible network nodes to the terminal.

It should be noted that, the access and mobility management functional entity corresponding to the distributed node provided in this embodiment of the present application may implement all the method steps implemented by the network registration method embodiment and may achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those of the method embodiment in this embodiment are omitted herein.

In another aspect, an embodiment of the present application further provides a processor readable storage medium, where a computer program is stored, where the computer program is configured to cause the processor to execute the network registration method applied to a terminal provided in the foregoing embodiments, where the method includes:

In another aspect, an embodiment of the present application further provides a processor readable storage medium, where the processor readable storage medium stores a computer program, where the computer program is configured to cause the processor to execute the network registration method applied to an access network entity provided in the foregoing embodiments, where the method includes:

Receiving a first registration request message sent by a terminal;

In another aspect, an embodiment of the present application further provides a processor readable storage medium, where the processor readable storage medium stores a computer program, where the computer program is configured to cause the processor to execute a network registration method provided in the foregoing embodiments and applied to an access and mobility management function entity corresponding to a centralized node, where the network registration method includes:

In another aspect, an embodiment of the present application further provides a processor readable storage medium, where the processor readable storage medium stores a computer program, where the computer program is configured to cause the processor to execute the network registration method provided in the foregoing embodiments and applied to an access and mobility management function entity corresponding to a distributed node, where the network registration method includes:

The processor-readable storage medium may be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic storage (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical storage (e.g., CD, DVD, BD, HVD, etc.), semiconductor storage (e.g., ROM, EPROM, EEPROM, nonvolatile storage (NAND FLASH), solid State Disk (SSD)), and the like.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims

1. A network registration method, applied to a terminal, comprising:

2. The network registration method according to claim 1, wherein the first registration request message carries a target network node identification and/or terminal information for determining the target network node.

3. The network registration method of claim 2, wherein the target network node identification is determined based on a preconfigured list of accessible network nodes.

4. A network registration method according to any one of claims 1-3, characterized in that the method further comprises:

5. A network registration method, applied to an access network entity, comprising:

receiving a first registration request message sent by a terminal;

6. The network registration method according to claim 5, wherein the first registration request message carries a target network node identification and/or terminal information for determining the target network node.

7. The network registration method according to any one of claims 5 or 6, wherein in case the first registration request message does not carry a target network node identity and/or terminal information for determining the target network node, the determining the target network node based on the first registration request message comprises:

the target network node is determined based on the first response message.

8. The network registration method according to claim 7, wherein in case the first network node is a centralized node, the first response message comprises a target network node identity or a list of candidate network nodes for determining the target network node.

9. The network registration method of claim 7, wherein, in the case where the first network node is a distributed node, the determining the target network node based on the first response message includes any one of:

10. The network registration method according to claim 7, wherein in the case where the first network node is a plurality of network nodes, the first registration request message carries registration information and access inquiry instruction information of the terminal;

11. The network registration method is characterized by being applied to an access and mobility management functional entity corresponding to a centralized node, and comprising the following steps:

12. The network registration method of claim 11, wherein the sending a response message to the first requesting entity for determining a target network node further comprises:

13. The network registration method according to claim 11, wherein in case the first requesting entity is an access network entity and the first registration request message carries registration information and access inquiry indication information of the terminal, the method further comprises:

14. The network registration method according to any one of claims 11-13, wherein the method further comprises:

15. The network registration method according to any one of claims 11-13, wherein the method further comprises:

and sending the current list of accessible network nodes to the terminal.

16. The network registration method is characterized by being applied to an access and mobility management functional entity corresponding to a distributed node, and comprising the following steps:

17. The network registration method according to claim 16, wherein in case it is determined not to receive the terminal based on the first registration request message, the transmitting a first response message for determining a target network node to the access network entity based on whether to receive the terminal, comprises:

18. The network registration method according to claim 16, wherein in the case where the first registration request message carries registration information and access inquiry instruction information of a terminal, the determining whether to receive the terminal based on the first registration request message includes:

19. The network registration method according to any one of claims 16-18, wherein the method further comprises:

And sending the current list of accessible network nodes to the terminal.

20. The network registration method according to claim 19, wherein the determining, based on the second registration request message, a current list of accessible network nodes corresponding to the terminal includes:

21. A terminal comprising a memory, a transceiver, and a processor:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

22. The terminal according to claim 21, wherein the first registration request message carries a target network node identity and/or terminal information for determining a target network node.

23. The terminal of any of claims 21 or 22, wherein the operations further comprise:

24. An access network entity comprising a memory, a transceiver, and a processor:

receiving a first registration request message sent by a terminal;

25. The access network entity of claim 24, wherein the first registration request message carries a target network node identity and/or terminal information for determining the target network node.

26. The access network entity according to any of claims 24 or 25, wherein, in case the first registration request message does not carry a target network node identity and/or terminal information for determining the target network node, the determining the target network node based on the first registration request message comprises:

the target network node is determined based on the first response message.

27. The access network entity of claim 26, wherein the first response message comprises a target network node identity or a list of candidate network nodes for determining the target network node in case the first network node is a centralized node.

28. The access network entity of claim 26, wherein, in the case where the first network node is a distributed node, the determining the target network node based on the first response message comprises any one of:

29. The access network entity according to claim 26, wherein in case the first network node is a plurality of network nodes, the first registration request message carries registration information and access inquiry indication information of the terminal;

30. An access and mobility management function entity corresponding to a centralized node, comprising a memory, a transceiver and a processor:

31. An access and mobility management functional entity corresponding to a distributed node, comprising a memory, a transceiver and a processor:

32. A network registration apparatus, applied to a terminal, comprising:

A first sending unit, configured to send a first registration request message to an access network entity, where the first registration request message is used to determine a target network node and a target access and mobility management function entity corresponding to the target network node.

33. A network registration apparatus, for application to an access network entity, comprising:

a second receiving unit, configured to receive a first registration request message sent by a terminal;

a second determining unit, configured to determine a target network node based on the first registration request message;

the second determining unit is further configured to determine a target access and mobility management function entity corresponding to the target network node based on the pre-configured access and mobility management function information;

and the second sending unit is used for sending a second registration request message to the target access and mobility management functional entity.

34. A network registration device, which is applied to an access and mobility management function entity corresponding to a centralized node, comprising:

a third receiving unit, configured to receive a first registration request message sent by a first requesting entity and used for requesting a target network node;

A third sending unit, configured to send a response message for determining a target network node to the first requesting entity;

35. A network registration device, which is applied to an access and mobility management function entity corresponding to a distributed node, comprising:

a fourth receiving unit, configured to receive a first registration request message sent by an access network entity and used for requesting a target network node, where the first registration request message originates from a terminal;

a fourth determining unit configured to determine whether to receive the terminal based on the first registration request message;

and the fourth sending unit is used for sending a first response message for determining the target network node to the access network entity based on whether the terminal is received or not.

36. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing the processor to execute the network registration method of any one of claims 1 to 20.