CN115604670A - Signaling intercommunication method, system, device, electronic equipment and storage medium - Google Patents

Abstract

The disclosure provides a signaling intercommunication method, a system, a device, electronic equipment and a storage medium, which relate to the technical field of wireless communication, wherein a first NF network element sends a service registration message to a first NRF network element, the first NRF network element sends the service registration message to a first SEPP network element, and the first SEPP network element acts as a proxy for the first NF network element to perform service registration to a second NRF network element; when the second NF network element sends the signaling message to the first NF network element, the second NF network element acquires the address information of the first SEPP network element from the second NRF network element, and sends the second signaling message carrying the address information of the first SEPP network element to the second SEPP network element, the second SEPP network element forwards the second signaling message to the first SEPP network element according to the address information in the first SEPP network element, and the first SEPP network element sends the second signaling message to the first NF network element. The method and the device realize the intercommunication of the signaling messages among different networks.

Description

Signaling intercommunication method, system, device, electronic equipment and storage medium

Technical Field

The present disclosure relates to the field of wireless communications technologies, and in particular, to a signaling interworking method, system, apparatus, electronic device, and storage medium.

Background

A private network is a field of network communication that is independent of, and co-exists with, existing carrier networks. In order to ensure the security of the private network, the private network is generally deployed in a relatively closed network environment, isolated from the external network.

The 3GPP (3 rd Generation Partnership Project) architecture introduces SEPP (Security Edge Protection Proxy) to implement signaling Security interworking between different operator networks or between an operator Network and an enterprise private Network SNPN (Stand-alone Non-Public Network), and performs signaling routing forwarding based on PLMN (Public land mobile Network) ID (Identity) or PLMN ID + NID (Network Identifier). However, in a PNI-NPN (Public Network Integrated NPN) scenario, a 5G (5 th Generation Mobile Communication Technology, fifth Generation Mobile Communication Technology) enterprise private Network and 5G Public Network interworking scenario of two different trust areas in the same PLMN is not defined in 3 GPP.

Based on this, how to realize the signaling security intercommunication between the private network and the public network in the same PLMN becomes a technical problem which needs to be solved urgently.

It is noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure and therefore may include information that does not constitute prior art that is already known to a person of ordinary skill in the art.

Disclosure of Invention

The disclosure provides a signaling interworking method, system, device, electronic device and storage medium, which overcome, at least to some extent, the problem in the related art that signaling cannot be intercommunicated between private networks and public networks in the same PLMN.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows, or in part will be obvious from the description, or may be learned by practice of the disclosure.

According to an aspect of the present disclosure, a signaling interworking method is provided, which is applied to a first NF (Network Function) Network element, and includes: sending a service registration message to a first NRF (network element data Repository Function) network element, where the service registration message includes attribute information and address information of a first NF network element, and the first NF network element and the first NRF network element are located in a first network, so that the first NRF network element sends the service registration message to a first SEPP network element of the first network, the first SEPP network element stores the address information of the first NF network element in the service registration message, replaces the address information of the first NF network element in the service registration message with the address information of the first SEPP network element, obtains a replaced service registration message, and forwards the replaced service registration message to a second SEPP network element of a second network, and the second SEPP network element forwards the replaced service registration message to a second NRF network element of the second network; when the first SEPP network element receives a second signaling message sent by the second SEPP network element, receiving the second signaling message sent by the first SEPP network element according to the address information of the first NF network element, wherein the second NF network element of the second network sends an NF discovery request to the second NRF network element, receives an NF discovery response returned by the second NRF network element, the NF discovery response comprises the address information of the first SEPP network element, and sends the second signaling message to the first SEPP network element, and the second signaling message comprises the address information of the first SEPP network element; and the first SEPP network element sends the second signaling message to the second SEPP network element according to the address information of the first SEPP network element.

In one embodiment of the present disclosure, the method further comprises: when the first NF network element sends a signaling message to the second NF network element, sending a first signaling message to the first SEPP network element so that the first SEPP network element sends the first signaling message to the second SEPP network element according to the locally configured address information of the second SEPP network element; and the second SEPP network element initiates service discovery to the second NRF network element, acquires the address information of the second NF network element, and forwards the first signaling message to the second NF network element according to the address information of the second NF network element.

According to another aspect of the present disclosure, a signaling interworking method is provided, including: applied to a second NF network element, comprising: when the second NF network element sends a signaling message to the first NF network element, sending an NF discovery request to a second NRF network element, wherein the second NF network element and the second NRF network element are positioned in a second network; receiving an NF discovery response returned by the second NRF network element, wherein the NF discovery response comprises address information of a first SEPP network element, and the first NF network element and the first SEPP network element are positioned in a first network; sending a second signaling message to a second SEPP network element of the second network, wherein the second signaling message contains address information of the first SEPP network element, so that the second SEPP network element sends the second signaling message to the first SEPP network element according to the address information of the first SEPP network element; the first SEPP network element obtains the address information of the first NF network element by initiating service discovery to a first NRF network element of the first network, and forwards the second signaling message to the first NF network element according to the address information of the first NF network element.

In one embodiment of the present disclosure, the method further comprises: when a second SEPP network element receives a first signaling message, receiving the first signaling message sent by the second SEPP network element, wherein the first signaling message is sent by a first NF network element, and the first NF network element sends the first signaling message to the first SEPP network element; the first SEPP network element sends the first signaling message to a second SEPP network element according to the routing information of the second SEPP network element configured locally; and the second SEPP network element acquires the address information of the second NF network element by initiating service discovery to the second NRF network element, and sends the first signaling message to the second NF network element according to the address information of the second NF network element.

According to still another aspect of the present disclosure, there is provided a signaling interworking system, including: the first NF network element is used for sending a service registration message to a first NRF network element, wherein the service registration message comprises attribute information and address information of the first NF network element, and the first NF network element and the first NRF network element are positioned in a first network; a first NRF network element for forwarding the service registration message to a first SEPP network element of the first network; the first SEPP network element is used for locally configuring routing information of a second SEPP network element of a second network, storing address information of a first NF network element in the service registration message after receiving the service registration message, replacing the address information of the first NF network element in the service registration message with the address information of the first SEPP network element to obtain a replaced service registration message, and sending the replaced service registration message to the SEPP network element according to the routing information of the second SEPP network element; the second SEPP network element is used for sending the replaced service registration message to a second NRF network element of a second network; the second NRF network element is configured to receive the replaced service registration message, and return an NF discovery response to a second NF network element of a second network when receiving an NF discovery request sent by the second NF network element, where the NF discovery request includes address information of the first SEPP network element; the second NF network element is configured to send the NF discovery request to the second NRF network element when the second NF network element sends a signaling message to the first NF network element, and send a second signaling message to the second SEPP after receiving an NF discovery response returned by the second NRF network element, where the NF discovery response includes address information of the first SEPP network element, and the second signaling message includes address information of the first SEPP network element; the second SEPP network element is further configured to send the second signaling message to the first SEPP network element according to the address information of the first SEPP network element; the first SEPP network element is further configured to initiate service discovery to the first NRF network element, receive address information of the first NF network element returned by the first NRF network element, and send the second signaling message to the first NF network element according to the address information of the first NF network element; the first NF network element is further configured to receive the second signaling message.

In an embodiment of the present disclosure, the first NF network element is further configured to send a first signaling message to the first SEPP network element when the first NF network element sends a signaling message to the second NF network element; the first SEPP network element is further configured to send the first signaling message to the second SEPP network element according to the locally configured routing information of the second SEPP network element; the second SEPP network element is further configured to receive the first signaling message, initiate service discovery to the first NRF network element, receive address information of a second NF network element returned by the second NRF network element, and send the first signaling message to the first NF network element according to the address information of the second NF network element; the first NF network element is further configured to receive the first signaling message.

According to still another aspect of the present disclosure, a signaling interworking apparatus is provided, which is applied to a first NF network element side, and includes: a service registration message sending module, configured to send a service registration message to a first NRF network element, where the service registration message includes attribute information and address information of a first NF network element, and the first NF network element and the first NRF network element are located in a first network, so that the first NRF network element sends the service registration message to a first SEPP network element of the first network, the first SEPP network element stores the address information of the first NF network element in the service registration message, replaces the address information of the first NF network element in the service registration message with the address information of the first SEPP network element, obtains a replaced service registration message, and forwards the replaced service registration message to a second SEPP network element of a second network, and the second SEPP network element forwards the replaced service registration message to a second NRF network element of the second network; a second signaling message receiving module, configured to receive, when the first SEPP network element receives a second signaling message sent by the second SEPP network element, the second signaling message sent by the first SEPP network element according to the address information of the first NF network element, where a second NF network element of the second network sends an NF discovery request to the second NRF network element, receives an NF discovery response returned by the second NRF network element, where the NF discovery response includes the address information of the first SEPP network element, and sends the second signaling message to the first SEPP network element, and the second signaling message includes the address information of the first SEPP network element; and the first SEPP network element sends the second signaling message to the second SEPP network element according to the address information of the first SEPP network element.

In an embodiment of the present disclosure, the apparatus further includes a first signaling message sending module, where the first signaling message sending module is configured to send a first signaling message to the first SEPP network element when the first NF network element sends a signaling message to the second NF network element, so that the first SEPP network element sends the first signaling message to the second SEPP network element according to locally configured address information of the second SEPP network element; and the second SEPP network element initiates service discovery to the second NRF network element, acquires the address information of the second NF network element, and forwards the first signaling message to the second NF network element according to the address information of the second NF network element.

According to still another aspect of the present disclosure, a signaling interworking apparatus is provided, which is applied to a second NF network element side, and includes: a NF discovery request sending module, configured to send a NF discovery request to a second NRF network element when the second NF network element sends a signaling message to a first NF network element, where the second NF network element and the second NRF network element are located in a second network; an NF discovery response receiving module, configured to receive an NF discovery response returned by the second NRF network element, where the NF discovery response includes address information of a first SEPP network element, and the first NF network element and the first SEPP network element are located in a first network; a second signaling message sending module, configured to send a second signaling message to a second SEPP network element of the second network, where the second signaling message includes address information of the first SEPP network element, so that the second SEPP network element sends the second signaling message to the first SEPP network element according to the address information of the first SEPP network element; the first SEPP network element obtains the address information of the first NF network element by initiating service discovery to a first NRF network element of the first network, and forwards the second signaling message to the first NF network element according to the address information of the first NF network element.

In an embodiment of the present disclosure, the apparatus further includes a first signaling message receiving module, where the first signaling message receiving module is configured to receive a first signaling message sent by a second SEPP network element when the second SEPP network element receives the first signaling message, where the first signaling message is sent by a first NF network element, and the first NF network element sends the first signaling message to the first SEPP network element; the first SEPP network element sends the first signaling message to a second SEPP network element according to the routing information of the second SEPP network element configured locally; and the second SEPP network element acquires the address information of the second NF network element by initiating service discovery to the second NRF network element, and sends the first signaling message to the second NF network element according to the address information of the second NF network element.

According to still another aspect of the present disclosure, there is provided an electronic device including: a processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to perform the above signaling interworking method via execution of the executable instructions.

According to yet another aspect of the present disclosure, there is provided a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the above-described signaling interworking method.

The embodiment of the disclosure provides a signaling intercommunication method, a signaling intercommunication system, a signaling intercommunication device, electronic equipment and a storage medium, wherein a first NF network element sends a service registration message to a first NRF network element, the first NRF network element sends the service registration message to a first SEPP network element, the first SEPP network element acts on the first NF network element to perform service registration to a second NRF network element, when a second NF network element sends a signaling message to the first NF network element, the second NF network element obtains address information of the first SEPP network element from the second NRF network element, sends a second signaling message carrying the address information of the first SEPP network element to the second SEPP network element, the second SEPP network element forwards the second signaling message to the first SEPP network element according to the address information in the first SEPP network element, and the first SEPP network element sends the second signaling message to the first NF network element. The present disclosure enables interworking of signaling messages between different networks.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.

Fig. 1 illustrates a communication system architecture diagram in an embodiment of the present disclosure;

fig. 2 shows a flow chart of a signaling interworking method in an embodiment of the present disclosure;

fig. 3 shows a flow chart of another signaling interworking method in an embodiment of the present disclosure;

fig. 4 is a schematic diagram illustrating a signaling interworking method in an embodiment of the present disclosure;

fig. 5 is a schematic diagram of a signaling interworking system in an embodiment of the present disclosure;

fig. 6 is a schematic diagram of a signaling interworking apparatus in an embodiment of the present disclosure;

fig. 7 is a schematic diagram of another signaling interworking apparatus in an embodiment of the present disclosure; and

fig. 8 shows a block diagram of an electronic device in an embodiment of the present disclosure.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.

With the 5G continuous enabling of the vertical industry, the client of the important point industries such as energy, port, aviation and the like has high requirements on network security isolation and function customization, and the 5G core network part customized network element is in a hybrid private network mode which is stationed and deployed at the client side, so that the requirements can be better met. However, the deployment method will cause the boundary of the operator core network to extend to the user side, and the network element of the 5GC (5G core,5G core network) private network residing and deployed in the enterprise campus (untrusted area) belongs to untrusted access relative to the 5G public network of the operator, thereby bringing greater challenges to the operator in terms of network and device security, user and service data security, operation and maintenance, and the like.

Based on this, the disclosure provides a signaling intercommunication method, system, device, electronic equipment and storage medium, SEPP network elements are respectively arranged at the boundaries of 5G public networks and 5G private networks of two trust areas in PLMN, in order to realize the addressing routing of the SEPP network elements of the public networks to the SEPP network elements of the private networks, the NF network elements of the private networks are firstly subjected to service registration in NRF network elements of a local private network, the NRF network elements of the private networks simultaneously trigger registration agent messages sent to the SEPP network elements of the private networks, the SEPP network elements of the private networks send service registration messages of the NF network elements of the private networks to the NRF network elements of the public networks through the SEPP network elements of the public networks, and the address information registered corresponding to the NF network elements of the private networks is the address of the SEPP network elements of the private networks.

When the NF network element of the public network sends a signaling message to the private network, the NF network element of the public network initiates a service discovery message to the NRF network element of the public network, judges to send the signaling message to the SEPP network element of the public network according to the address information of the SEPP network element of the private network returned by the NRF network element of the public network, and carries the address information of the SEPP network element of the private network in the message header domain.

And the public network SEPP network element forwards the signaling message to the private network SEPP network element according to the message header domain address information, and the private network SEPP network element forwards the message to the target private network NF network element after service discovery is carried out on the private network NRF network element.

The method realizes signaling intercommunication between the 5G public networks of two different trust areas in the same PLMN and the 5GC private network of the enterprise park through the SEPP network element, and solves the problem that the prior art can not perform signaling routing according to the PLMN ID. The method and the device enhance the routing logic of NF and SEPP of the 5G network, realize signaling forwarding and safe access of the 5G public network and the private network in the PLMN, and do not need to add new network functions.

Fig. 1 illustrates a schematic diagram of a communication system architecture provided by the present disclosure. As shown in fig. 1, the communication system may include a data analysis network element, a data management network element, a network storage function network element, a session management function network element, a user plane function network element, and a terminal device. The data analysis network element, the data management network element, the network storage function network element and the session management function network element can be connected through a bus. The bus here means that connection communication of network elements in the communication system can be logically realized, and connection communication between network elements in the communication system can be realized through an interface or a network. The session management function network element may be configured to control the user plane function network element to execute a user plane related policy, or the session management function network element may be configured to control a terminal device or a Radio Access Network (RAN) to execute a session related policy through a mobility management network element.

A data analysis network element, which is mainly used to collect data from a network function network element, an Operation Administration and Maintenance (OAM) system, a terminal device, or an application layer function (AF) network element, and analyze the collected data, so as to obtain a data analysis result. The data analysis network element may also send the obtained data analysis result to the NF, the OAM system, the terminal device, or the AF network element, so that these entities make corresponding policy making, operation execution, and the like. In the fifth generation (the 5th generation,5 g) communication, the data analysis network element may be a network data analysis function (NWDAF) network element, a Management Data Analysis Service (MDAS) network element, or the like, and in future communication such as the 6th generation (6 g) communication, the data analysis network element may still be an NWDAF or MDAS network element or have another name, which is not limited in this disclosure. The NF network elements include, but are not limited to, a mobility management function (AMF) network element, a Session Management Function (SMF), a Policy Control Function (PCF) network element, and the like in 5G.

The data management network element is mainly used for managing and storing user data, such as subscription information and authentication/authorization information. In 5G, the data management network element may be a Unified Data Management (UDM) network element or a Unified Data Repository (UDR) network element, and in future communications such as 6G, the data management network element may still be a UDM network element or a UDR network element, or have another name, which is not limited in this disclosure.

The network storage function network element is mainly used for supporting service registration, network element state monitoring and the like of the network function network element, and realizing automatic management, selection and expansion of network function services. In 5G, the network storage function network element may be a network storage function network element, and in future communications such as 6G, the network storage function network element may still be an NRF network element, or have another name, which is not limited in this disclosure.

The session management function network element is mainly used for session management in a mobile network and selection and control of a user plane function network element. Among them, the session management is such as session creation, modification, release. The specific functions include, for example, allocating an Internet Protocol (IP) address to a user, selecting a user plane functional network element providing a message forwarding function, and the like. In 5G, the session management function network element may be a Session Management Function (SMF) network element, and in future communications such as 6G, the session management function network element may still be an SMF network element or have another name, which is not limited in this disclosure.

The user plane functional network element is mainly used for Service processing of a user plane, such as routing and transmission of data packets, packet detection, service quantity reporting, quality of Service (QoS) processing, lawful interception, uplink packet detection, downlink data packet storage, and the like. In 5G, the user plane function network element may be a User Plane Function (UPF) network element, and in future communications such as 6G, the user plane function network element may still be a UPF network element or have another name, which is not limited in this disclosure. It should be noted that the UPF in the present disclosure is an abbreviation of core network UPF, and both have the same meaning, and will not be separately described later.

An access network device (also called Radio Access Network (RAN) device) is a device that provides a terminal with a wireless communication function. Access network devices include, but are not limited to: next generation base station (G node B, gbb), evolved node B (eNB), radio Network Controller (RNC), node B (NB), base Station Controller (BSC), base Transceiver Station (BTS), home base station (e.g., home evolved node B, or home node B, HNB), base Band Unit (BBU), transmission point (TRP), transmission Point (TP), mobile switching center, etc. in 5G, the following embodiments of the present invention are described in detail.

A terminal device (also referred to as a User Equipment (UE)) is a device with a wireless transceiving function, and may be deployed on land, including indoors or outdoors, in a handheld manner, or in a vehicle; can also be deployed on the water surface (such as a ship and the like); and may also be deployed in the air (e.g., airplanes, balloons, satellites, etc.). The terminal may be a mobile phone (mobile phone), a tablet computer (pad), a computer with wireless transceiving function, a Virtual Reality (VR) terminal, an Augmented Reality (AR) terminal, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned driving (self), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and the like. It should be noted that the present disclosure may also be applied to the 4th generation,4g, network architecture. For example, mobility Management Entity (MME) in 4G provides the functions of the mobility management network element in this disclosure; the functions of the session management function network element in the present disclosure are provided by the MME and Serving Gateway (SGW) in 4G; the functionality of the core network UPF in this disclosure is provided by a packet data network gateway (PGW) in 4G; the functions of the data analysis network element in the present disclosure, etc., are provided by the data analysis network element in 4G. In addition, the form and number of the network elements shown in fig. 1 are only for example and do not constitute a limitation of the present disclosure.

The present exemplary embodiment will be described in detail below with reference to the drawings and examples.

First, a signaling interworking method is provided in the embodiments of the present disclosure, and the method may be executed by any electronic device with computing processing capability.

Fig. 1 shows a flowchart of a signaling interworking method in an embodiment of the present disclosure, and as shown in fig. 1, the signaling interworking method provided in the embodiment of the present disclosure includes the following steps:

s202, sending a service registration message to a first network storage function NRF network element, where the service registration message includes attribute information and address information of a first NF network element, and the first NF network element and the first NRF network element are located in a first network, so that the first NRF network element sends the service registration message to a first security border proxy gateway SEPP network element of the first network, the first SEPP network element stores the address information of the first NF network element in the service registration message, replaces the address information of the first NF network element in the service registration message with the address information of the first SEPP network element, obtains a replaced service registration message, forwards the replaced service registration message to a second SEPP network element of a second network, and the second SEPP network element forwards the replaced service registration message to a second NRF network element of the second network;

it should be noted that the service registration message is used to perform service registration of the first NF network element on the first NRF network element, where the address information may be a network IP (Internet Protocol ) address, and the attribute information of the first NF network element may be attribute information registered by the first NF network element to the first NRF network element, and is used to identify a general parameter of the NF network element of the type and available service information.

In one embodiment of the present disclosure, the first network may be a private network, and the network type of the first network may be SNPN, such as a 5GC private network or an enterprise private network; the second network may be a public network, the network type of the second network may be a PLMN, a network that may provide a public land mobile service, such as an operator network.

In an embodiment of the present disclosure, the first NF network element is a private network NF network element, the first NRF network element is a private network NRF network element, the first SEPP network element is a private network SEPP network element, the second NF network element is a public network NF network element, the second NRF network element is a public network NRF network element, and the second SEPP network element is a public network SEPP network element.

S204, when the first SEPP network element receives a second signaling message sent by the second SEPP network element, receiving the second signaling message sent by the first SEPP network element according to the address information of the first NF network element, wherein the second NF network element of the second network sends an NF discovery request to the second NRF network element, receives an NF discovery response returned by the second NRF network element, the NF discovery response comprises the address information of the first SEPP network element, and sends the second signaling message to the first SEPP network element, and the second signaling message comprises the address information of the first SEPP network element; and the first SEPP network element sends the second signaling message to the second SEPP network element according to the address information of the first SEPP network element.

In the signaling interworking method provided in the embodiment of the present disclosure, a first NF network element sends a service registration message to a first NRF network element, the first NRF network element sends the service registration message to a first SEPP network element, the first SEPP network element proxies the first NF network element to perform service registration to a second NRF network element, when a second NF network element sends a signaling message to the first NF network element, the second NF network element obtains address information of the first SEPP network element from the second NRF network element, sends a second signaling message carrying the address information of the first SEPP network element to the second SEPP network element, the second SEPP network element forwards the second signaling message to the first SEPP network element according to the address information in the first SEPP network element, and the first SEPP network element sends the second signaling message to the first NF network element. The present disclosure enables interworking of signaling messages between different networks.

In one embodiment of the present disclosure, the method further comprises: when the first NF network element sends a signaling message to the second NF network element, sending the first signaling message to the first SEPP network element so that the first SEPP network element sends the first signaling message to the second SEPP network element according to the locally configured address information of the second SEPP network element; and the second SEPP network element initiates service discovery to the second NRF network element, acquires the address information of the second NF network element, and forwards the first signaling message to the second NF network element according to the address information of the second NF network element.

In an embodiment of the present disclosure, initiating, by the second SEPP network element, service discovery to the second NRF network element, and acquiring address information of the second NF network element may include:

the second SEPP network element sends a second service discovery message to the second NRF network element, wherein the second service discovery message is used for requesting the second NRF network element to return the information of the second NR network element;

the second SEPP network element receives a second service discovery response returned by the second NRF network element, where the second service discovery response includes information of the second NR network element, and the information of the second NR network element may include, but is not limited to, one or more combinations of address information of the second NF network element, a user number segment, a slice ID, a TAC (Tracking Area Code), a provincial identity, a private network identity, and the like.

The embodiment of the present disclosure further provides another signaling interworking method, which participates in the flowchart of another signaling interworking method shown in fig. 3, and may be applied to a second NF network element, where the method includes:

s302, when a second NF network element sends a signaling message to a first NF network element, a NF discovery request is sent to a second NRF network element, wherein the second NF network element and the second NRF network element are positioned in a second network;

it should be noted that the NF discovery request is used to request to acquire the address information of the first SEPP network element from the second NRF network element.

S304, receiving an NF discovery response returned by the second NRF network element, wherein the NF discovery response comprises address information of the first SEPP network element, and the first NF network element and the first SEPP network element are positioned in the first network;

s306, sending the second signaling message to a second SEPP network element of a second network, wherein the second signaling message contains address information of the first SEPP network element, so that the second SEPP network element sends the second signaling message to the first SEPP network element according to the address information of the first SEPP network element; the first SEPP network element obtains the address information of the first NF network element by initiating service discovery to a first NRF network element of the first network, and forwards the second signaling message to the first NF network element according to the address information of the first NF network element.

In one embodiment of the present disclosure, the address information of the first SEPP network element may be carried in a header field of the second signaling message.

In an embodiment of the present disclosure, the obtaining, by the first SEPP network element, address information of the first NF network element by initiating service discovery to the first NRF network element of the first network may include:

the first SEPP network element sends a first service discovery message to the first NRF network element, wherein the first service discovery message is used for requesting the first NRF network element to return the information of the first NF network element;

the first SEPP network element receives a first service discovery response returned by the first NRF network element, where the second service discovery response includes information of the first NR network element, and the information of the first NR network element may include, but is not limited to, one or more combinations of address information, a user number segment, an Identity ID (Identity identifier), a TAC (Tracking Area Code), a provincial identifier, and a private network identifier of the first NF network element.

In one embodiment of the present disclosure, the method further comprises: when the second SEPP network element receives the first signaling message, receiving the first signaling message sent by the second SEPP network element, wherein the first signaling message is sent by the first NF network element, and the first NF network element sends the first signaling message to the first SEPP network element; the first SEPP network element sends the first signaling message to the second SEPP network element according to the routing information of the second SEPP network element configured locally; and the second SEPP network element acquires the address information of the second NF network element by initiating service discovery to the second NRF network element, and sends the first signaling message to the second NF network element according to the address information of the second NF network element.

In an embodiment of the present disclosure, the present disclosure further provides another signaling interworking method, referring to another signaling interworking method diagram shown in fig. 4, where the signaling interworking method may include:

s402, the first NF network element sends a service registration request to the first NRF network element, wherein the service registration request comprises the attribute information and the address information of the first NF network element;

s404, the first NRF network element sends the service registration request to the first SEPP network element;

s406, the first SEPP network element replaces the address information of the first NF network element in the service registration request with the address information of the first SEPP network element to obtain a replaced service registration request, wherein the replaced service registration request comprises the attribute information of the first NF network element and the address information of the first SEPP network element;

s408, the first SEPP network element sends the replaced service registration request to the second SEPP network element according to the routing information of the second SEPP network element configured locally;

s410, the second SEPP network element sends the replaced service registration request to a second NRF network element;

s412, when the second NF network element sends a signaling message to the first NF network element, the second NF network element sends an NF discovery request to a second NRF network element;

s414, the second NRF network element returns an NF discovery response to the second NF network element, wherein the NF discovery response comprises the address information of the first SEPP network element;

s416, the second NF network element sends a second signaling message to the second SEPP network element, wherein the second signaling message comprises the address information of the first SEPP network element;

s418, the second SEPP network element sends a second signaling message to the first SEPP network element according to the address information of the first SEPP network element;

s420, the first SEPP network element initiates service discovery to the first NRF network element to acquire the address information of the first NF network element;

s422, the first SEPP network element sends a second signaling message to the first NF network element according to the address information of the first NF network element;

s424, when the first NF network element sends the first signaling message to the second NF network element, the first NF network element sends the first signaling message to the first SEPP network element;

s426, the first SEPP network element sends a first signaling message to the second NRF network element according to the locally configured address information of the second SEPP network element;

s428, the second SEPP network element initiates service discovery to the second NRF network element to acquire the address information of the second NF network element;

s430, the second SEPP network element sends the first signaling message to the second NF network element according to the address information of the second NF network element.

In an embodiment of the present disclosure, the method may further include, before S402: and the first SEPP network element locally configures the routing information of the second SEPP network element.

The embodiment of the present disclosure further provides a signaling interworking system, which participates in the signaling interworking system diagram shown in fig. 5, and includes:

the first NF network element 510 is configured to send a service registration message to the first NRF network element 520, where the service registration message includes attribute information and address information of the first NF network element 510, and the first NF network element 510 and the first NRF network element 520 are located in a first network;

a first NRF network element 520 for forwarding the service registration message to a first SEPP network element 530 of the first network;

the first SEPP network element 530 is configured to locally configure routing information of a second SEPP network element 540 of the second network, store address information of the first NF network element 510 in the service registration message after receiving the service registration message, replace the address information of the first NF network element 510 in the service registration message with the address information of the first SEPP network element 530 to obtain a replaced service registration message, and send the replaced service registration message to the SEPP network element according to the routing information of the second SEPP network element 540;

a second SEPP network element 540, configured to send the replaced service registration message to a second NRF network element 550 of the second network;

the second NRF network element 550 is configured to receive the replaced service registration message, and return an NF discovery response to the second NF network element 560 when receiving an NF discovery request sent by the second NF network element 560 of the second network, where the NF discovery request and the NF discovery response include address information of the first SEPP network element 530;

the second NF network element 560 is configured to send an NF discovery request to the second NRF network element 550 when the second NF network element 560 sends a signaling message to the first NF network element 510, and send a second signaling message to the second SEPP after receiving an NF discovery response returned by the second NRF network element 550, where the NF discovery response includes address information of the first SEPP network element 530, and the second signaling message includes address information of the first SEPP network element 530;

the second SEPP network element 540 is further configured to send the second signaling message to the first SEPP network element 530 according to the address information of the first SEPP network element 530;

the first SEPP network element 530 is further configured to initiate service discovery to the first NRF network element 520, receive address information of the first NF network element 510 returned by the first NRF network element 520, and send a second signaling message to the first NF network element 510 according to the address information of the first NF network element 510;

the first NF network element 510 is further configured to receive a second signaling message.

In an embodiment of the present disclosure, the first NF network element 510 is further configured to send a first signaling message to the first SEPP network element 530 when the first NF network element 510 sends a signaling message to the second NF network element 560; the first SEPP network element 530 is further configured to send the first signaling message to the second SEPP network element 540 according to the routing information of the second SEPP network element 540 configured locally; the second SEPP network element 540 is further configured to receive the first signaling message, initiate service discovery to the first NRF network element 520, receive address information of the second NF network element 560 returned by the second NRF network element 550, and send the first signaling message to the first NF network element 510 according to the address information of the second NF network element 560; the first NF network element 510 is further configured to receive the first signaling message.

In an embodiment of the present disclosure, when the first network is a private network and the second network is a public network, the second SEPP network element may be connected to a plurality of first SEPP network elements, that is, the second SEPP network element is a public network SEPP network element, the first SEPP network element is a private network SEPP network element, the public network SEPP network element and the private network SEPP network element are in a one-to-many relationship, the public network SEPP network element of the area is butted with the plurality of private network SEPP network elements in the area, and the public network SEPP network element and the private network SEPP network element respectively perform topology hiding on the public network NF network element and the private network NF network element, where the public network NF network element is a second NF network element and the private network NF network element is a second NF network element.

Based on the same inventive concept, the embodiment of the present disclosure further provides a signaling interworking apparatus, such as the following embodiments. Because the principle of the embodiment of the apparatus for solving the problem is similar to that of the embodiment of the method, the embodiment of the apparatus can be implemented by referring to the implementation of the embodiment of the method, and repeated details are not described again.

Fig. 6 is a schematic diagram of a signaling interworking apparatus in an embodiment of the present disclosure, and as shown in fig. 6, the signaling interworking apparatus may be applied to a first NF network element side, and includes:

a service registration message sending module 610, configured to send a service registration message to a first NRF network element, where the service registration message includes attribute information and address information of a first NF network element, and the first NF network element and the first NRF network element are located in a first network, so that the first NRF network element sends the service registration message to a first SEPP network element of the first network, the first SEPP network element stores the address information of the first NF network element in the service registration message, replaces the address information of the first NF network element in the service registration message with the address information of the first SEPP network element, obtains a replaced service registration message, and forwards the replaced service registration message to a second SEPP network element of a second network, and the second SEPP network element forwards the replaced service registration message to a second NRF network element of the second network;

a second signaling message receiving module 620, configured to receive, when the first SEPP network element receives a second signaling message sent by the second SEPP network element, the second signaling message sent by the first SEPP network element according to the address information of the first NF network element, where the second NF network element of the second network sends an NF discovery request to the second NRF network element, receives an NF discovery response returned by the second NRF network element, where the NF discovery response includes the address information of the first SEPP network element, and sends the second signaling message to the first SEPP network element, and the second signaling message includes the address information of the first SEPP network element; and the first SEPP network element sends the second signaling message to the second SEPP network element according to the address information of the first SEPP network element.

In an embodiment of the present disclosure, the apparatus further includes a first signaling message sending module, where the first signaling message sending module is configured to send a first signaling message to the first SEPP network element when the first NF network element sends the signaling message to the second NF network element, so that the first SEPP network element sends the first signaling message to the second SEPP network element according to locally configured address information of the second SEPP network element; and the second SEPP network element initiates service discovery to the second NRF network element, acquires the address information of the second NF network element, and forwards the first signaling message to the second NF network element according to the address information of the second NF network element.

Fig. 7 is a schematic diagram of another signaling interworking apparatus in the embodiment of the present disclosure, and as shown in fig. 7, the apparatus may be applied to a second NF network element side, and includes:

an NF discovery request sending module 710, configured to send an NF discovery request to a second NRF network element when a second NF network element sends a signaling message to a first NF network element, where the second NF network element and the second NRF network element are located in a second network;

an NF discovery response receiving module 720, configured to receive an NF discovery response returned by the second NRF network element, where the NF discovery response includes address information of the first SEPP network element, and the first NF network element and the first SEPP network element are located in the first network;

a second signaling message sending module 730, configured to send a second signaling message to a second SEPP network element of a second network, where the second signaling message includes address information of the first SEPP network element, so that the second SEPP network element sends the second signaling message to the first SEPP network element according to the address information of the first SEPP network element; the first SEPP network element obtains the address information of the first NF network element by initiating service discovery to a first NRF network element of the first network, and forwards the second signaling message to the first NF network element according to the address information of the first NF network element.

In an embodiment of the present disclosure, the apparatus further includes a first signaling message receiving module, where the first signaling message receiving module is configured to receive a first signaling message sent by a second SEPP network element when the second SEPP network element receives the first signaling message, where the first signaling message is sent by a first NF network element, and the first NF network element sends the first signaling message to the first SEPP network element; the first SEPP network element sends the first signaling message to the second SEPP network element according to the routing information of the second SEPP network element configured locally; and the second SEPP network element acquires the address information of the second NF network element by initiating service discovery to the second NRF network element, and sends the first signaling message to the second NF network element according to the address information of the second NF network element.

As will be appreciated by one skilled in the art, aspects of the present disclosure may be embodied as a system, method or program product. Accordingly, various aspects of the disclosure may be embodied in the form of: an entirely hardware embodiment, an entirely software embodiment (including firmware, microcode, etc.) or an embodiment combining hardware and software aspects that may all generally be referred to herein as a "circuit," module "or" system.

An electronic device 800 according to this embodiment of the disclosure is described below with reference to fig. 8. The electronic device 800 shown in fig. 8 is only an example and should not bring any limitations to the functionality and scope of use of the embodiments of the present disclosure.

As shown in fig. 8, the electronic device 800 is in the form of a general purpose computing device. The components of the electronic device 800 may include, but are not limited to: the at least one processing unit 810, the at least one memory unit 820, and a bus 830 that couples the various system components including the memory unit 820 and the processing unit 810.

Wherein the memory unit stores program code that may be executed by the processing unit 810 to cause the processing unit 810 to perform the steps according to various exemplary embodiments of the present disclosure as described in the "exemplary methods" section above in this specification. For example, the processing unit 810 may perform the following steps of the above-described method embodiments: sending a service registration message to a first network storage function (NRF) network element, wherein the service registration message comprises attribute information and address information of a first NF network element, the first NF network element and the first NRF network element are positioned in a first network, so that the first NRF network element sends the service registration message to a first security border proxy gateway (SEPP) network element of the first network, the first SEPP network element stores the address information of the first NF network element in the service registration message, the address information of the first NF network element in the service registration message is replaced by the address information of the first SEPP network element to obtain a replaced service registration message, the replaced service registration message is forwarded to a second SEPP network element of a second network, and the second SEPP network element forwards the replaced service registration message to a second NRF network element of the second network; when the first SEPP network element receives a second signaling message sent by the second SEPP network element, receiving the second signaling message sent by the first SEPP network element according to the address information of the first NF network element, wherein the second NF network element of the second network sends an NF discovery request to the second NRF network element, receives an NF discovery response returned by the second NRF network element, the NF discovery response contains the address information of the first SEPP network element, and sends the second signaling message to the first SEPP network element, and the second signaling message contains the address information of the first SEPP network element; and the first SEPP network element sends the second signaling message to the second SEPP network element according to the address information of the first SEPP network element.

The storage unit 820 may include readable media in the form of volatile memory units such as a random access memory unit (RAM) 8201 and/or a cache memory unit 8202, and may further include a read only memory unit (ROM) 8203.

The storage unit 820 may also include a program/utility 8204 having a set (at least one) of program modules 8205, such program modules 8205 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which, or some combination thereof, may comprise an implementation of a network environment.

Bus 830 may be any one or more of several types of bus structures including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.

The electronic device 800 may also communicate with one or more external devices 840 (e.g., a keyboard, a pointing device, a bluetooth device, etc.), with one or more devices that enable a user to interact with the electronic device 800, and/or with any device (e.g., a router, a modem, etc.) that enables the electronic device 800 to communicate with one or more other computing devices. Such communication may occur via input/output (I/O) interfaces 850. Also, the electronic device 800 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the internet) via the network adapter 860. As shown, the network adapter 860 communicates with the other modules of the electronic device 800 via the bus 830. It should be understood that although not shown in the figures, other hardware and/or software modules may be used in conjunction with the electronic device 800, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, among others.

Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, and may also be implemented by software in combination with necessary hardware. Therefore, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a usb disk, a removable hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which may be a personal computer, a server, a terminal device, or a network device, etc.) to execute the method according to the embodiments of the present disclosure.

In an exemplary embodiment of the present disclosure, there is also provided a computer-readable storage medium, which may be a readable signal medium or a readable storage medium. On which a program product capable of implementing the above-described method of the present disclosure is stored. In some possible embodiments, various aspects of the disclosure may also be implemented in the form of a program product comprising program code for causing a terminal device to perform the steps according to various exemplary embodiments of the disclosure described in the above-mentioned "exemplary methods" section of this specification, when the program product is run on the terminal device.

More specific examples of the computer-readable storage medium in the present disclosure may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

In the present disclosure, a computer readable storage medium may include a propagated data signal with readable program code embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A readable signal medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.

Alternatively, program code embodied on a computer readable storage medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

In particular implementations, program code for carrying out operations of the present disclosure may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + +, or the like, as well as conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., through the internet using an internet service provider).

It should be noted that although in the above detailed description several modules or units of the device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functionality of two or more modules or units described above may be embodied in one module or unit, according to embodiments of the present disclosure. Conversely, the features and functions of one module or unit described above may be further divided into embodiments by a plurality of modules or units.

Moreover, although the steps of the methods of the present disclosure are depicted in the drawings in a particular order, this does not require or imply that these steps must be performed in this particular order, or that all of the depicted steps must be performed, to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step execution, and/or one step broken down into multiple step executions, etc.

Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, or by software in combination with necessary hardware. Therefore, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a usb disk, a removable hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which may be a personal computer, a server, a mobile terminal, or a network device, etc.) to execute the method according to the embodiments of the present disclosure.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims (10)

1. A signaling intercommunication method is applied to a first network function NF network element and comprises the following steps:

sending a service registration message to a first network storage function (NRF) network element, wherein the service registration message comprises attribute information and address information of a first NF network element, the first NF network element and the first NRF network element are located in a first network, so that the first NRF network element sends the service registration message to a first security border proxy gateway (SEPP) network element of the first network, the first SEPP network element stores the address information of the first NF network element in the service registration message, the address information of the first NF network element in the service registration message is replaced by the address information of the first SEPP network element to obtain a replaced service registration message, the service registration message of the replaced network element is forwarded to a second SEPP of a second network, and the second SEPP forwards the replaced service registration message to a second NRF network element of the second network;

when the first SEPP network element receives a second signaling message sent by the second SEPP network element, receiving the second signaling message sent by the first SEPP network element according to the address information of the first NF network element, wherein the second NF network element of the second network sends an NF discovery request to the second NRF network element, receives an NF discovery response returned by the second NRF network element, the NF discovery response contains the address information of the first SEPP network element, and sends the second signaling message to the first SEPP network element, and the second signaling message contains the address information of the first SEPP network element; and the first SEPP network element sends the second signaling message to the second SEPP network element according to the address information of the first SEPP network element.

2. The signaling interworking method of claim 1, wherein the method further comprises:

when the first NF network element sends a signaling message to the second NF network element, sending a first signaling message to the first SEPP network element so that the first SEPP network element sends the first signaling message to the second SEPP network element according to the locally configured address information of the second SEPP network element; and the second SEPP network element initiates service discovery to the second NRF network element, acquires the address information of the second NF network element, and forwards the first signaling message to the second NF network element according to the address information of the second NF network element.

3. A signaling interworking method applied to a second NF network element includes:

when the second NF network element sends a signaling message to a first NF network element, sending a NF discovery request to a second NRF network element, wherein the second NF network element and the second NRF network element are positioned in a second network;

receiving an NF discovery response returned by the second NRF network element, wherein the NF discovery response comprises address information of a first SEPP network element, and the first NF network element and the first SEPP network element are positioned in a first network;

sending a second signaling message to a second SEPP network element of the second network, wherein the second signaling message contains address information of the first SEPP network element, so that the second SEPP network element sends the second signaling message to the first SEPP network element according to the address information of the first SEPP network element; the first SEPP network element obtains the address information of the first NF network element by initiating service discovery to a first NRF network element of the first network, and forwards the second signaling message to the first NF network element according to the address information of the first NF network element.

4. The signaling interworking method of claim 1, wherein the method further comprises:

when a second SEPP network element receives a first signaling message, receiving the first signaling message sent by the second SEPP network element, wherein the first signaling message is sent by a first NF network element, and the first NF network element sends the first signaling message to the first SEPP network element; the first SEPP network element sends the first signaling message to a second SEPP network element according to the routing information of the second SEPP network element configured locally; and the second SEPP network element acquires the address information of the second NF network element by initiating service discovery to the second NRF network element, and sends the first signaling message to the second NF network element according to the address information of the second NF network element.

5. A signaling interworking system, comprising:

the first NF network element is used for sending a service registration message to a first NRF network element, wherein the service registration message comprises attribute information and address information of the first NF network element, and the first NF network element and the first NRF network element are positioned in a first network;

a first NRF network element for forwarding the service registration message to a first SEPP network element of the first network;

the first SEPP network element is used for locally configuring routing information of a second SEPP network element of a second network, storing address information of a first NF network element in the service registration message after receiving the service registration message, replacing the address information of the first NF network element in the service registration message with the address information of the first SEPP network element to obtain a replaced service registration message, and sending the replaced service registration message to the SEPP network element according to the routing information of the second SEPP network element;

the second SEPP network element is used for sending the replaced service registration message to a second NRF network element of a second network;

the second NRF network element is configured to receive the replaced service registration message, and return an NF discovery response to a second NF network element of a second network when receiving an NF discovery request sent by the second NF network element, where the NF discovery request and the NF discovery response include address information of the first SEPP network element;

the second NF network element is configured to send the NF discovery request to the second NRF network element when the second NF network element sends a signaling message to the first NF network element, and send a second signaling message to the second SEPP after receiving an NF discovery response returned by the second NRF network element, where the NF discovery response includes address information of the first SEPP network element, and the second signaling message includes address information of the first SEPP network element;

the second SEPP network element is further configured to send the second signaling message to the first SEPP network element according to the address information of the first SEPP network element;

the first SEPP network element is further configured to initiate service discovery to the first NRF network element, receive address information of the first NF network element returned by the first NRF network element, and send the second signaling message to the first NF network element according to the address information of the first NF network element;

the first NF network element is further configured to receive the second signaling message.

6. The signaling interworking system of claim 5,

the first NF network element is further configured to send a first signaling message to the first SEPP network element when the first NF network element sends a signaling message to the second NF network element;

the first SEPP network element is further configured to send the first signaling message to the second SEPP network element according to the locally configured routing information of the second SEPP network element;

the second SEPP network element is further configured to receive the first signaling message, initiate service discovery to the first NRF network element, receive address information of a second NF network element returned by the second NRF network element, and send the first signaling message to the first NF network element according to the address information of the second NF network element;

the first NF network element is further configured to receive the first signaling message.

7. A signaling intercommunication device, applied to a first NF network element side, includes:

a service registration message sending module, configured to send a service registration message to a first NRF network element, where the service registration message includes attribute information and address information of a first NF network element, and the first NF network element and the first NRF network element are located in a first network, so that the first NRF network element sends the service registration message to a first SEPP network element of the first network, the first SEPP network element stores the address information of the first NF network element in the service registration message, replaces the address information of the first NF network element in the service registration message with the address information of the first SEPP network element, obtains a replaced service registration message, and forwards the replaced service registration message to a second SEPP network element of a second network, and the second SEPP network element forwards the replaced service registration message to a second NRF network element of the second network;

a second signaling message receiving module, configured to receive, when the first SEPP network element receives a second signaling message sent by the second SEPP network element, the second signaling message sent by the first SEPP network element according to the address information of the first NF network element, where a second NF network element of the second network sends an NF discovery request to the second NRF network element, receives an NF discovery response returned by the second NRF network element, where the NF discovery response includes the address information of the first SEPP network element, and sends the second signaling message to the first SEPP network element, and the second signaling message includes the address information of the first SEPP network element; and the first SEPP network element sends the second signaling message to the second SEPP network element according to the address information of the first SEPP network element.

8. A signaling intercommunication device, applied to the second NF network element side, includes:

a NF discovery request sending module, configured to send a NF discovery request to a second NRF network element when the second NF network element sends a signaling message to a first NF network element, where the second NF network element and the second NRF network element are located in a second network;

an NF discovery response receiving module, configured to receive an NF discovery response returned by the second NRF network element, where the NF discovery response includes address information of a first SEPP network element, and the first NF network element and the first SEPP network element are located in a first network;

a second signaling message sending module, configured to send a second signaling message to a second SEPP network element of the second network, where the second signaling message includes address information of the first SEPP network element, so that the second SEPP network element sends the second signaling message to the first SEPP network element according to the address information of the first SEPP network element; the first SEPP network element obtains the address information of the first NF network element by initiating service discovery to a first NRF network element of the first network, and forwards the second signaling message to the first NF network element according to the address information of the first NF network element.

9. An electronic device, comprising:

a processor; and

a memory for storing executable instructions of the processor;

wherein the processor is configured to perform the signaling interworking method of any one of claims 1-4 via execution of the executable instructions.

10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the signaling interworking method according to any one of claims 1 to 4.

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