Redirected messaging method, apparatus and system, storage medium

Abstract

The present disclosure relates to a redirection message transmission method, device and system, and a storage medium. The redirection message transmission method comprises: receiving a redirection message sent by a public network access and mobility management function (AMF) network element, wherein the public network AMF network element sends the redirection message to a signaling interworking gateway by matching a fully qualified domain name (FQDN) format address of a private network AMF network element in the case of private network user access; parsing the FQDN format address of the private network AMF network element in the redirection message to obtain real address information of the private network AMF network element; and sending the parsed redirection message to the private network AMF network element. The present disclosure can realize hiding of the public network to the private network, realize one-point access of the private network, and thus avoid influence of the enterprise private network on the operator public network.

Description

Technical Field

[0001] This disclosure relates to the field of wireless communication, and in particular to a method, apparatus and system for redirecting message transmission, and a storage medium. Background Technology

[0002] With the rapid development of 5G private network services, the need for interconnection between private networks and public networks is becoming increasingly urgent. However, this has also brought about a series of network security and operator management issues. In order to solve these problems, the applicant proposed the concept of a signaling interconnection gateway. By deploying a signaling interconnection gateway between the private network and the public network, signaling messages between the two networks need to be forwarded through the signaling interconnection gateway, thereby realizing functions such as network isolation, topology hiding, and network security. This not only ensures the security of the public network and the private network, but also simplifies the complexity of network connection.

[0003] In scenarios where base stations are shared between industrial parks and the public network, since current terminals do not support reporting user slice information, in order to ensure that public network users are not affected, the base station needs to connect users to the public network AMF (Access and Mobility Management Function) by default. When the connected user is a private network user, an AMF redirection process is required. Summary of the Invention

[0004] In related technologies, under the premise that the public network and the private network are isolated from each other, the public network AMF cannot directly select the private network AMF.

[0005] In view of at least one of the above technical problems, this disclosure provides a method, apparatus and system for redirecting message transmission, and a storage medium that can hide the public network from the private network, enable one-point access to the private network, and prevent the enterprise private network from affecting the operator's public network.

[0006] According to one aspect of this disclosure, a method for redirecting message delivery is provided, comprising:

[0007] Receive redirection messages sent by public network access and mobility management function (AMF) network elements. In the case of private network user access, the public network AMF network element sends the redirection message to the signaling interconnection gateway by matching the fully qualified domain name (FQDN) format address of the private network AMF network element.

[0008] Parse the FQDN format address of the private network AMF element in the redirection message to obtain the real address information of the private network AMF element;

[0009] The parsed and processed redirected message is sent to the private network AMF element.

[0010] In some embodiments of this disclosure, the redirected message passing method further includes:

[0011] Maintain the mapping relationship between the real address information of the private network AMF network element and the FQDN format address of the private network AMF network element. The FQDN format address of the private network AMF network element includes the private network element identifier and the private network AMF network element name.

[0012] In some embodiments of this disclosure, the redirected message passing method further includes:

[0013] Receive registration requests initiated by private network AMF network elements;

[0014] The registration request is processed to convert the real address information of the private network AMF network element in the registration request into the FQDN format address of the private network AMF network element;

[0015] The processed registration request is sent to the public network storage function network element, and the network element identifier and supported network slice information of the private network AMF network element are configured in the public network slice selection function network element. This allows the public network AMF network element to obtain the network element identifier of the private network AMF network element from the public network slice selection function network element based on the network slice information of the private network user when the private network user accesses the network. It also allows the public network AMF network element to obtain the FQDN format address of the private network AMF network element from the public network storage function network element based on the network element identifier of the private network AMF network element.

[0016] According to another aspect of this disclosure, a method for redirecting message passing is provided, comprising:

[0017] When a private network user accesses the network, the redirection message is sent to the signaling interconnection gateway by matching the Fully Qualified Domain Name (FQDN) format address of the private network access and mobility management function (AMF) network element. The signaling interconnection gateway then resolves the FQDN format address of the private network AMF network element in the redirection message to obtain the real address information of the private network AMF network element, and sends the resolved redirection message to the private network AMF network element.

[0018] In some embodiments of this disclosure, the redirected message passing method further includes:

[0019] When a private network user accesses the network, if it is determined that the public network AMF network element cannot provide services to the private network user, a query is initiated to the public network slice selection function network element based on the private network user's network slice information to obtain the network element identifier of the private network AMF network element. Specifically, the signaling interconnection gateway receives the registration request initiated by the private network AMF network element, processes the registration request, converts the real address information of the private network AMF network element in the registration request into the FQDN format address of the private network AMF network element, sends the processed registration request to the public network storage function network element, and configures the network element identifier and supported network slice information of the private network AMF network element in the public network slice selection function network element.

[0020] Based on the network element identifier of the private network AMF network element, a query is initiated to the public network storage function network element to obtain the FQDN format address of the private network AMF network element. Then, the step of sending the redirection message to the signaling interconnection gateway by matching the FQDN format address of the private network AMF network element is executed.

[0021] According to another aspect of this disclosure, a signaling interoperability gateway is provided, comprising:

[0022] The redirect message receiving module is configured to receive redirect messages sent by public network access and mobility management function (AMF) network elements. In the case of private network user access, the public network AMF network element sends the redirect message to the signaling interconnection gateway by matching the FQDN format address of the private network AMF network element.

[0023] The redirect message parsing module is configured to parse the FQDN format address of the private network AMF element in the redirect message to obtain the real address information of the private network AMF element;

[0024] The redirect message sending module is configured to send the parsed and processed redirect message to the private network AMF element.

[0025] In some embodiments of this disclosure, the signaling interconnection gateway further includes:

[0026] The mapping relationship maintenance module is configured to maintain the mapping relationship between the real address information of the private network AMF network element and the FQDN format address of the private network AMF network element. The FQDN format address of the private network AMF network element includes the private network element identifier and the private network AMF network element name.

[0027] In some embodiments of this disclosure, the signaling interconnection gateway further includes:

[0028] The registration request receiving module is configured to receive registration requests initiated by private network AMF network elements;

[0029] The registration request processing module is configured to process the registration request and convert the real address information of the private network AMF element in the registration request into the fully qualified domain name (FQDN) format address of the private network AMF element.

[0030] The registration request sending module is configured so that the signaling interconnection gateway sends the processed registration request to the public network storage function network element, and configures the network element identifier and supported network slice information of the private network AMF network element in the public network slice selection function network element. This allows the public network AMF network element to obtain the network element identifier of the private network AMF network element from the public network slice selection function network element based on the network slice information of the private network user when the private network user accesses the network. It also allows the public network AMF network element to obtain the FQDN format address of the private network AMF network element from the public network storage function network element based on the network element identifier of the private network AMF network element.

[0031] According to another aspect of this disclosure, a public network access and mobility management function network element is provided, including:

[0032] The redirect message sending unit is configured to send a redirect message to the signaling interconnection gateway when a private network user accesses the network by matching the Fully Qualified Domain Name (FQDN) format address of the private network access and mobility management function (AMF) network element. The signaling interconnection gateway then resolves the FQDN format address of the private network AMF network element in the redirect message to obtain the real address information of the private network AMF network element, and sends the resolved redirect message to the private network AMF network element.

[0033] In some embodiments of this disclosure, the public network access and mobility management function network element further includes:

[0034] The first query unit is configured to, upon receiving an access request from a private network user, determine that the public network AMF network element cannot provide services to the private network user, and initiate a query to the public network slice selection function network element based on the private network user's network slice information to obtain the network element identifier of the private network AMF network element. Specifically, the signaling interconnection gateway receives a registration request initiated by the private network AMF network element in advance, processes the registration request, converts the real address information of the private network AMF network element in the registration request into the FQDN format address of the private network AMF network element, sends the processed registration request to the public network storage function network element, and configures the network element identifier and supported network slice information of the private network AMF network element in the public network slice selection function network element.

[0035] The second query unit is configured to initiate a query to the public network storage function network element based on the network element identifier of the private network AMF network element, obtain the FQDN format address of the private network AMF network element, and then instruct the redirection message sending unit to perform the operation of sending the redirection message to the signaling interconnection gateway by matching the FQDN format address of the private network AMF network element.

[0036] According to another aspect of this disclosure, a redirection message passing system is provided, including a signaling interconnection gateway as described in any of the above embodiments and a public network access and mobility management function network element as described in any of the above embodiments.

[0037] According to another aspect of this disclosure, a computer apparatus is provided, comprising:

[0038] The memory is configured to store instructions;

[0039] The processor is configured to execute the instructions, causing the computer device to perform operations implementing the redirected message passing method as described in any of the above embodiments.

[0040] According to another aspect of this disclosure, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions that, when executed by a processor, implement the redirected message passing method as described in any of the above embodiments.

[0041] This disclosure enables the public network to hide from the private network, allowing for single-point access to the private network, thereby preventing the enterprise's private network from affecting the operator's public network. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 This is a schematic diagram of some embodiments of the redirected message passing method disclosed herein.

[0044] Figure 2 This is a schematic diagram of some other embodiments of the redirected messaging method disclosed herein.

[0045] Figure 3 This is a schematic diagram of some embodiments of the redirected message passing method disclosed herein.

[0046] Figure 4 This is a schematic diagram of some embodiments of the redirected message passing method disclosed herein.

[0047] Figure 5 This is a schematic diagram of some embodiments of the redirected message passing method disclosed herein.

[0048] Figure 6 This is a schematic diagram of some embodiments of the signaling interoperability gateway disclosed herein.

[0049] Figure 7 This is a schematic diagram of some embodiments of the network elements for public network access and mobility management functions disclosed herein.

[0050] Figure 8This is a schematic diagram of the structure of some embodiments of the computer device disclosed herein. Detailed Implementation

[0051] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0052] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this disclosure.

[0053] At the same time, it should be understood that, for ease of description, the dimensions of the various parts shown in the accompanying drawings are not drawn according to actual scale.

[0054] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0055] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0056] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0057] Figure 1 This is a schematic diagram of some embodiments of the redirection messaging method of this disclosure. Preferably, this embodiment can be executed by the signaling interoperability gateway or the redirection messaging system of this disclosure. The method includes at least one of steps 11-13, wherein:

[0058] Step 11: The signaling interconnection gateway receives a redirection message sent by the public network access and mobility management function (AMF) network element. In the case of private network user access, the public network AMF network element sends the redirection message to the signaling interconnection gateway by matching the FQDN (Fully Qualified Domain Name) format address of the private network AMF network element.

[0059] Step 12: The signaling interconnection gateway parses the FQDN format address of the private network AMF element in the redirection message to obtain the real address information of the private network AMF element.

[0060] Step 13: The signaling interconnection gateway sends the parsed and processed redirection message to the private network AMF element.

[0061] In some embodiments of this disclosure, the public network is also referred to as the large network, which refers to the operator network.

[0062] In some embodiments of this disclosure, a private network refers to an enterprise private network, an enterprise dedicated network, an enterprise intranet, or an enterprise private network.

[0063] Figure 2 This is a schematic diagram of some other embodiments of the redirection messaging method of this disclosure. Preferably, this embodiment can be executed by the signaling interoperability gateway or the redirection messaging system of this disclosure. The method includes at least one of steps 21-27, wherein:

[0064] Step 21: The signaling interconnection gateway receives the registration request initiated by the private network AMF element.

[0065] Step 22: The signaling interconnection gateway processes the registration request and converts the real address information of the private network AMF element in the registration request into the FQDN format address of the private network AMF element.

[0066] In some embodiments of this disclosure, the signaling interconnection gateway converts the network element address information in the registration request into a unified FQDN format, such as "ct-toB-AMF1", where "ct-toB-" represents the private network element and "AMF1" is the name of the private network AMF.

[0067] Step 23: The signaling interconnection gateway maintains the mapping relationship between the real address information of the private network AMF network element and the FQDN format address of the private network AMF network element. The FQDN format address of the private network AMF network element includes the private network element identifier and the private network AMF network element name.

[0068] Step 24: The signaling interconnection gateway sends the processed registration request to the public network NRF (Network Function Repository Function) and configures the private network AMF network element's network element identifier and supported network slice information in the public network NSSF (Network Slice Selection Function). This allows the public network AMF network element to obtain the private network AMF network element identifier from the public network network slice selection function network element based on the private network user's network slice information when a private network user accesses the network. It also allows the public network AMF network element to obtain the private network AMF network element's FQDN format address from the public network network storage function network element based on the private network AMF network element's network element identifier.

[0069] In some embodiments of this disclosure, the network element identifier of the private network AMF element includes the AMFset ID (AMF element combination identifier) ​​or NF instance ID (Network Function Element Instance Identifier) ​​of the private network AMF element.

[0070] Step 25: The signaling interconnection gateway receives a redirection message sent by the public network access and mobility management function (AMF) network element. In the case of private network user access, the public network AMF network element sends the redirection message to the signaling interconnection gateway by matching the fully qualified domain name (FQDN) format address of the private network AMF network element.

[0071] Step 26: The signaling interconnection gateway parses the FQDN format address of the private network AMF element in the redirection message to obtain the real address information of the private network AMF element.

[0072] Step 27: The signaling interconnection gateway sends the parsed and processed redirection message to the private network AMF element.

[0073] The above embodiments of this disclosure address the problem that, under the premise that the public network AMF cannot directly select the private network AMF when the public network and the private network are isolated from each other, and propose a method for forwarding redirection messages based on the signaling interoperability gateway proxy registration method.

[0074] In order to simultaneously meet the needs of network security and the smooth operation of customized private network services, the above embodiments of this disclosure propose a method for forwarding redirection messages based on signaling interoperability gateway proxy registration. While ensuring that the public network is not visible to the private network, the forwarding of redirection messages can be realized, thus ensuring the smooth operation of relevant business processes.

[0075] Figure 3 This is a schematic diagram illustrating some embodiments of the redirected message passing method of this disclosure. Preferably, this embodiment can be executed by the public network AMF network element or the redirected message passing system of this disclosure. The method includes step 31, wherein:

[0076] Step 31: When a private network user accesses the network, the public network AMF element sends a redirect message to the signaling interconnection gateway by matching the Fully Qualified Domain Name (FQDN) format address of the private network access and mobility management function AMF element. The signaling interconnection gateway then resolves the FQDN format address of the private network AMF element in the redirect message to obtain the real address information of the private network AMF element and sends the resolved redirect message to the private network AMF element.

[0077] Figure 4 This is a schematic diagram illustrating some embodiments of the redirection messaging method of this disclosure. Preferably, this embodiment can be executed by the public network AMF network element or the redirection messaging system of this disclosure. The method includes at least one of steps 41-43, wherein:

[0078] Step 41: When a private network user accesses the network, the public network AMF network element determines that it cannot provide services to the private network user. Based on the private network user's network slice information, it initiates a query to the public network slice selection function network element to obtain the network element identifier of the private network AMF network element. Specifically, the signaling interconnection gateway receives the registration request initiated by the private network AMF network element, processes the registration request, converts the real address information of the private network AMF network element in the registration request into the FQDN format address of the private network AMF network element, sends the processed registration request to the public network storage function network element, and configures the network element identifier and supported network slice information of the private network AMF network element in the public network slice selection function network element.

[0079] Step 42: The public network AMF element initiates a query to the public network storage function element based on the element identifier of the private network AMF element to obtain the FQDN format address of the private network AMF element.

[0080] Step 43: The public network AMF element sends a redirect message to the signaling interconnection gateway by matching the fully qualified domain name (FQDN) format address of the private network access and mobility management function AMF element. The signaling interconnection gateway then resolves the FQDN format address of the private network AMF element in the redirect message to obtain the real address information of the private network AMF element and sends the resolved redirect message to the private network AMF element.

[0081] The method described in the above embodiments of this disclosure can successfully forward redirection messages when the public network AMF element is not visible to the private network AMF element. Furthermore, the public network AMF element only needs to support the indirect communication mode and set the corresponding matching rules, requiring minimal changes to the relevant standards. This avoids extensive customization and development of public network elements and is easy to implement.

[0082] Figure 5This is a schematic diagram of some embodiments of the redirected messaging method of this disclosure. Preferably, this embodiment can be executed by the redirected messaging system of this disclosure. The method includes at least one of steps 501-512, wherein:

[0083] Step 501: The private network AMF element sends a registration request to the signaling interconnection gateway. The registration request includes the real address information of the private network AMF element, the supported slice information, the element identifier, and other information.

[0084] Step 502: The signaling interconnection gateway processes the registration request and converts the real address information of the private network AMF element in the registration request into the FQDN format address of the private network AMF element. The FQDN format address of the private network AMF element includes the private network element identifier and the private network AMF element name.

[0085] In some embodiments of this disclosure, step 502 may include: the signaling interconnection gateway converts the network element address information in the registration request, while retaining other information unchanged.

[0086] In some embodiments of this disclosure, step 502 may include: the signaling interconnection gateway converts the network element address information in the registration request into a unified format FQDN, such as "ct-toB-AMF1", where "ct-toB-" represents the private network element and "AMF1" is the name of the private network AMF.

[0087] In some embodiments of this disclosure, the FQDN format of different private network AMFs should be consistent, for example, "ct-toB-AMF name".

[0088] In some embodiments of this disclosure, step 502 may include: the signaling interconnection gateway maintaining the mapping relationship between the real address information of the private network AMF network element and the FQDN format address of the private network AMF network element.

[0089] In the above embodiments of this disclosure, the signaling interconnection gateway needs to process the registration request message of the private network AMF, uniformly encode the address information of the private network AMF in the message, convert it into FQDN format, and maintain the mapping relationship between FQDN and the real address information of the private network AMF.

[0090] Step 503: The signaling interconnection gateway sends the processed registration request to the public NRF network element.

[0091] Step 504: Configure relevant information of private network AMF network element in public network NSSF network element, wherein the relevant information may include network element identifier of private network AMF network element and network slicing information supported by private network AMF network element.

[0092] Step 505: The private network user terminal initiates a registration request. The private network user terminal connects to the public network AMF network element by default. When the private network user connects to the public network AMF, the public network AMF network element determines that it cannot provide services to the private network user. The public network AMF network element queries the public network NSSF for the identifier of the target private network AMF network element based on the private network user's network slice information.

[0093] Step 506: The public network NSSF returns the network element identifier of the target private network AMF network element to the public network AMF network element.

[0094] In some embodiments of this disclosure, the network element identifier of the private network AMF element includes the AMFset ID or NF instance ID of the private network AMF element.

[0095] Step 507: The public network AMF element obtains the address information of the private network AMF element from the public network NRF element based on the element identifier of the private network AMF element.

[0096] Step 508: The public network NRF network element returns the FQDN format address of the target private network AMF network element to the public network AMF network element.

[0097] Step 509: The public network NRF element enables indirect communication mode and sets corresponding matching conditions, such as matching "ct-toB-*", that is, the matching condition is that the prefix of the FQDN format address represents the private network element.

[0098] Step 510: The public network NRF element sends a redirect message that meets the matching conditions to the signaling interconnection gateway.

[0099] In some embodiments of this disclosure, steps 509-510 may include: the public network AMF network element needs to support indirect communication mode and set corresponding matching conditions. When the address information of the target network element is FQDN and the prefix of the FQDN format address meets certain conditions (i.e. the prefix represents a private network element), the redirection message is sent to the signaling interconnection gateway.

[0100] In some embodiments of this disclosure, steps 509-510 may include: the public network AMF element uses inter-segment routing to send a redirection message to the signaling interconnection gateway by matching the FQDN format of the private network AMF element, and the target network element in the message should be the FQDN of the private network AMF element.

[0101] Step 511: The signaling interconnection gateway parses the FQDN format address of the private network AMF element in the redirection message sent by the public network AMF to obtain the real address information of the private network AMF element.

[0102] In some embodiments of this disclosure, step 511 may include: the signaling interconnection gateway parses the redirection message sent by the public network AMF and parses the real address information of the private network AMF according to the internal mapping table.

[0103] Step 512: The signaling interconnection gateway sends the parsed and processed redirection message to the private network AMF element.

[0104] Standard indirect communication and service discovery require that consumer network elements and service provider network elements be visible to each other. The method proposed in the above embodiments of this disclosure can hide the public network from the private network, realize one-point access to the private network, and avoid the private network of enterprises from affecting the operator's public network.

[0105] The public network AMF network elements in the above embodiments of this disclosure only need to support indirect communication mode and set corresponding matching rules, with minimal changes to relevant standards, thus avoiding extensive custom development of public network elements.

[0106] Figure 6 This is a schematic diagram of some embodiments of the signaling interoperability gateway disclosed herein. For example... Figure 6 As shown, the signaling interoperability gateway disclosed herein may include a redirect message receiving module 61, a redirect message parsing module 62, and a redirect message sending module 63, wherein:

[0107] The redirection message receiving module 61 is configured to receive redirection messages sent by public network access and mobility management function (AMF) network elements. In the case of private network user access, the public network AMF network element sends the redirection message to the signaling interconnection gateway by matching the FQDN format address of the private network AMF network element.

[0108] The redirect message parsing module 62 is configured to parse the FQDN format address of the private network AMF element in the redirect message to obtain the real address information of the private network AMF element.

[0109] The redirect message sending module 63 is configured to send the parsed and processed redirect message to the private network AMF element.

[0110] In some embodiments of this disclosure, such as Figure 6 As shown, the signaling interconnection gateway may further include a mapping relationship maintenance module 64, wherein:

[0111] The mapping relationship maintenance module 64 is configured to maintain the mapping relationship between the real address information of the private network AMF network element and the FQDN format address of the private network AMF network element, wherein the FQDN format address of the private network AMF network element includes the private network element identifier and the private network AMF network element name.

[0112] In some embodiments of this disclosure, such as Figure 6As shown, the signaling interconnection gateway may further include a registration request receiving module 65, a registration request processing module 66, and a registration request sending module 67, wherein:

[0113] The registration request receiving module 65 is configured to receive registration requests initiated by private network AMF network elements.

[0114] The registration request processing module 66 is configured to process the registration request and convert the real address information of the private network AMF element in the registration request into the fully qualified domain name (FQDN) format address of the private network AMF element.

[0115] The registration request sending module 67 is configured to send the processed registration request to the public network storage function network element via the signaling interconnection gateway, and configure the relevant information of the private network AMF network element in the public network slice selection function network element, so that when a private network user accesses the network, the public network AMF network element can obtain the network element identifier of the private network AMF network element from the public network slice selection function network element based on the network slice information of the private network user, and obtain the FQDN format address of the private network AMF network element from the public network storage function network element based on the network element identifier of the private network AMF network element.

[0116] The above embodiments of this disclosure propose a redirection message delivery scheme based on a signaling interconnection gateway, which can accurately deliver redirection messages while ensuring that the main network and the private network are not visible to each other, thus ensuring the smooth operation of related business processes.

[0117] Figure 7 This is a schematic diagram illustrating some embodiments of the network elements for public network access and mobility management functions disclosed herein. For example... Figure 7 As shown, the network element for public network access and mobility management functions disclosed herein may include a redirection message sending unit 71, wherein:

[0118] The redirection message sending unit 71 is configured to send a redirection message to the signaling interconnection gateway when a private network user accesses the network by matching the Fully Qualified Domain Name (FQDN) format address of the private network access and mobility management function (AMF) network element. This allows the signaling interconnection gateway to parse the FQDN format address of the private network AMF network element in the redirection message, obtain the real address information of the private network AMF network element, and send the parsed redirection message to the private network AMF network element.

[0119] In some embodiments of this disclosure, such as Figure 7 As shown, the public network access and mobility management function network element may further include a first query unit 72 and a second query unit 73, wherein:

[0120] The first query unit 72 is configured to, upon receiving an access request from a private network user, determine that the public network AMF network element cannot provide services to the private network user, and initiate a query to the public network slice selection function network element based on the private network user's network slice information to obtain the network element identifier of the private network AMF network element. Specifically, the signaling interconnection gateway receives a registration request initiated by the private network AMF network element in advance, processes the registration request, converts the real address information of the private network AMF network element in the registration request into the FQDN format address of the private network AMF network element, sends the processed registration request to the public network storage function network element, and configures the network element identifier and supported network slice information of the private network AMF network element in the public network slice selection function network element.

[0121] The second query unit 73 is configured to initiate a query to the public network storage function network element based on the network element identifier of the private network AMF network element, obtain the FQDN format address of the private network AMF network element, and then instruct the redirection message sending unit 71 to perform the operation of sending the redirection message to the signaling interconnection gateway by matching the FQDN format address of the private network AMF network element.

[0122] The above-described embodiments of this disclosure can successfully forward redirection messages even when the AMF network element of the large network is not visible to the private network. Furthermore, the AMF network element of the large network only needs to support the routing method of indirect communication, which requires minimal modification to the existing network and is easy to implement.

[0123] According to another aspect of this disclosure, a redirected messaging system is provided, comprising any of the embodiments described above (e.g., Figure 6 The signaling interoperability gateway described in the embodiments and any of the above embodiments (e.g.) Figure 7 The public network access and mobility management function network element described in the embodiment).

[0124] Figure 5 Schematic diagrams of some embodiments of the redirected messaging system disclosed herein are also provided.

[0125] In some embodiments of this disclosure, such as Figure 7 As shown, the publicly disclosed redirected message passing system may also include public network NRF network elements, public network NSSF network elements, and private network AMF network elements.

[0126] The redirect message passing system of the above embodiments of this disclosure achieves redirect message forwarding from public network AMF network elements to private network AMF network elements by proxy registration of private network AMF network elements through the signaling interconnection gateway, while ensuring public network security.

[0127] Standard indirect communication does not involve network element registration messages. The scheme proposed in the above embodiments of this disclosure can hide the private network from the large network, enable one-point access of the private network, and avoid the private network of the enterprise affecting the operator's public network.

[0128] The public network AMF network elements in the above embodiments of this disclosure only need to support indirect communication mode and set corresponding matching rules, with minimal changes to relevant standards, thus avoiding extensive custom development of public network elements.

[0129] The embodiments disclosed above can be applied to the following scenarios: As 5G customized private networks mature, more and more enterprises want to deploy enterprise private networks. Some high-value enterprise customers may want to deploy a complete 5GC in the park to ensure uninterrupted production. However, due to spectrum limitations, enterprises cannot deploy the entire network independently. When the base station in the enterprise park is simultaneously connected to the enterprise intranet and the operator's public network, a redirection process may be triggered.

[0130] When the public network AMF needs to initiate a redirection process to the private network AMF, the solution proposed in the above embodiments of this disclosure completes the redirection-related business process while ensuring that the public network is not visible to the private network in the early stage. At the same time, the solution in the above embodiments of this disclosure only requires the public network AMF to support the indirect communication mode and set the corresponding matching rules, with minimal changes to the relevant standards, thus avoiding a large amount of customized development of public network elements.

[0131] Figure 8 This is a schematic diagram illustrating the structure of some embodiments of the computer device disclosed herein. For example... Figure 8 As shown, the computer device includes a memory 81 and a processor 82.

[0132] The memory 81 is used to store instructions, and the processor 82 is coupled to the memory 81. The processor 82 is configured to execute instructions stored in the memory to implement the methods involved in the above embodiments.

[0133] In some embodiments of this disclosure, processor 82 is configured to perform such... Figure 1 or Figure 2 In the case of the embodiments, the computer device of this disclosure can be implemented as the signaling interoperability gateway of this disclosure.

[0134] In other embodiments of this disclosure, processor 82 is configured to perform as follows Figure 3 In the case of the method in the embodiment of Figure 4, the computer device of this disclosure can be implemented as a network element for public network access and mobility management functions of this disclosure.

[0135] like Figure 8 As shown, the computer device also includes a communication interface 83 for exchanging information with other devices. Additionally, the computer device includes a bus 84, through which the processor 82, communication interface 83, and memory 81 communicate with each other.

[0136] The memory 81 may include high-speed RAM, and may also include non-volatile memory, such as at least one disk drive. The memory 81 may also be a memory array. The memory 81 may also be divided into blocks, and these blocks may be combined into virtual volumes according to certain rules.

[0137] Furthermore, processor 82 may be a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement embodiments of the present disclosure.

[0138] According to another aspect of this disclosure, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions that, when executed by a processor, implement any of the embodiments described above (e.g., Figures 1-5 The redirected message passing method described in any embodiment.

[0139] Those skilled in the art will understand that embodiments of this disclosure can be provided as methods, apparatus, or computer program products. Therefore, this disclosure can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this disclosure can take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0140] This disclosure is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can 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 a machine for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0141] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0142] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0143] The signaling interoperability gateway and public network access and mobility management function network element described above can be implemented as a general-purpose processor, programmable logic controller (PLC), digital signal processor (DSP), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component or any suitable combination thereof for performing the functions described in this application.

[0144] This concludes the detailed description of the present disclosure. To avoid obscuring the concept of the disclosure, some details known in the art have not been described. Those skilled in the art will fully understand how to implement the technical solutions disclosed herein based on the above description.

[0145] Those skilled in the art will understand that all or part of the steps of the above embodiments can be implemented by hardware, or by a program instructing the relevant hardware to implement them. The program can be stored in a non-transitory computer-readable storage medium, such as a read-only memory, a disk, or an optical disk.

[0146] The description in this disclosure is provided for illustrative and descriptive purposes only and is not intended to be exhaustive or to limit the disclosure to its forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of this disclosure and to enable those skilled in the art to understand this disclosure and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A method for redirecting message passing, characterized in that, include: Receive registration requests initiated by private network AMF network elements; The registration request is processed to convert the real address information of the private network AMF network element in the registration request into the FQDN format address of the private network AMF network element; The processed registration request is sent to the public network storage function network element, and the network element identifier and supported network slice information of the private network AMF network element are configured in the public network slice selection function network element. This allows the public network AMF network element to obtain the network element identifier of the private network AMF network element from the public network slice selection function network element based on the network slice information of the private network user when the private network user accesses the network. It also allows the public network AMF network element to obtain the FQDN format address of the private network AMF network element from the public network storage function network element based on the network element identifier of the private network AMF network element. Receive redirection messages sent by public network access and mobility management function (AMF) network elements. In the case of private network user access, the public network AMF network element sends the redirection message to the signaling interconnection gateway by matching the fully qualified domain name (FQDN) format address of the private network AMF network element. Parse the FQDN format address of the private network AMF element in the redirection message to obtain the real address information of the private network AMF element; The parsed and processed redirected message is sent to the private network AMF element.

2. The redirection message passing method according to claim 1, characterized in that, Also includes: Maintain the mapping relationship between the real address information of the private network AMF network element and the FQDN format address of the private network AMF network element. The FQDN format address of the private network AMF network element includes the private network element identifier and the private network AMF network element name.

3. A method for redirecting message passing, characterized in that, include: When a private network user accesses the network, if it is determined that the public network AMF network element cannot provide services to the private network user, a query is initiated to the public network slice selection function network element based on the private network user's network slice information to obtain the network element identifier of the private network AMF network element. Specifically, the signaling interconnection gateway receives the registration request initiated by the private network AMF network element, processes the registration request, converts the real address information of the private network AMF network element in the registration request into the FQDN format address of the private network AMF network element, sends the processed registration request to the public network storage function network element, and configures the network element identifier and supported network slice information of the private network AMF network element in the public network slice selection function network element. Based on the network element identifier of the private network AMF network element, a query is initiated to the public network storage function network element to obtain the FQDN format address of the private network AMF network element; By matching the Fully Qualified Domain Name (FQDN) format address of the AMF network element in the private network access and mobility management function, the redirection message is sent to the signaling interconnection gateway. The signaling interconnection gateway then resolves the FQDN format address of the private network AMF network element in the redirection message to obtain the real address information of the private network AMF network element, and sends the resolved redirection message to the private network AMF network element.

4. A signaling interconnection gateway, characterized in that, include: The registration request receiving module is configured to receive registration requests initiated by private network AMF network elements; The registration request processing module is configured to process the registration request and convert the real address information of the private network AMF element in the registration request into the fully qualified domain name (FQDN) format address of the private network AMF element. The registration request sending module is configured to send the processed registration request to the public network storage function network element via the signaling interconnection gateway, and configure the network element identifier and supported network slice information of the private network AMF network element in the public network slice selection function network element, so that when a private network user accesses the network, the public network AMF network element can obtain the network element identifier of the private network AMF network element from the public network slice selection function network element according to the network slice information of the private network user, and obtain the FQDN format address of the private network AMF network element from the public network storage function network element according to the network element identifier of the private network AMF network element. The redirect message receiving module is configured to receive redirect messages sent by public network access and mobility management function (AMF) network elements. In the case of private network user access, the public network AMF network element sends the redirect message to the signaling interconnection gateway by matching the FQDN format address of the private network AMF network element. The redirect message parsing module is configured to parse the FQDN format address of the private network AMF element in the redirect message to obtain the real address information of the private network AMF element; The redirect message sending module is configured to send the parsed and processed redirect message to the private network AMF element.

5. The signaling interconnection gateway according to claim 4, characterized in that, Also includes: The mapping relationship maintenance module is configured to maintain the mapping relationship between the real address information of the private network AMF network element and the FQDN format address of the private network AMF network element. The FQDN format address of the private network AMF network element includes the private network element identifier and the private network AMF network element name.

6. A network element for public network access and mobility management, characterized in that, include: The redirect message sending unit is configured to send a redirect message to the signaling interconnection gateway when a private network user accesses the network by matching the fully qualified domain name (FQDN) format address of the private network access and mobility management function (AMF) network element. The signaling interconnection gateway then resolves the FQDN format address of the private network AMF network element in the redirect message to obtain the real address information of the private network AMF network element and sends the resolved redirect message to the private network AMF network element. The first query unit is configured to, upon receiving an access request from a private network user, determine that the public network AMF network element cannot provide services to the private network user, and initiate a query to the public network slice selection function network element based on the private network user's network slice information to obtain the network element identifier of the private network AMF network element. Specifically, the signaling interconnection gateway receives a registration request initiated by the private network AMF network element in advance, processes the registration request, converts the real address information of the private network AMF network element in the registration request into the FQDN format address of the private network AMF network element, sends the processed registration request to the public network storage function network element, and configures the network element identifier and supported network slice information of the private network AMF network element in the public network slice selection function network element. The second query unit is configured to initiate a query to the public network storage function network element based on the network element identifier of the private network AMF network element, obtain the FQDN format address of the private network AMF network element, and then instruct the redirection message sending unit to perform the operation of sending the redirection message to the signaling interconnection gateway by matching the FQDN format address of the private network AMF network element.

7. A redirected message passing system, characterized in that, It includes the signaling interconnection gateway as described in claim 4 or 5 and the public network access and mobility management function network element as described in claim 6.

8. A computer device, characterized in that, include: The memory is configured to store instructions; A processor is configured to execute the instructions, causing the computer device to perform operations implementing the redirected message passing method as described in any one of claims 1-3.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that, when executed by a processor, implement the redirected message passing method as described in any one of claims 1-3.

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