A roaming compatibility adaptation system and method

Abstract

The application discloses a roaming compatible adaptation system and method, relates to the technical field of wireless networks, and comprises a decision control layer, an adaptation conversion layer and an access execution layer. The decision control layer comprises an adaptation rule management module which is used for storing and managing compatible adaptation rules of multiple manufacturers' equipment. The adaptation conversion layer is used for calling the compatible adaptation rules to realize conversion adaptation of service information between different manufacturers' equipment. The access execution layer comprises a manufacturer adaptation interface gateway which is configured with standard interfaces and manufacturer special interfaces of multiple manufacturers' equipment. The manufacturer adaptation interface gateway is used for identifying and calling the manufacturer special interfaces to realize data interaction with core network equipment of corresponding manufacturers' equipment through the manufacturer special interfaces. The application can realize multi-dimensional compatibility of service information between multiple manufacturers' equipment and improve the quality of roaming services.

Description

Technical Field

[0001] This invention relates to the field of wireless network technology, and in particular to a roaming compatibility adaptation system and method. Background Technology

[0002] Roaming is the technical capability in a communication network that allows a user terminal to access other visited networks and use communication services normally after leaving its home network. The 5G core network cross-network roaming scenario with multi-vendor equipment coexisting refers to a scenario in 5G standalone (SA) architecture where, when a user terminal leaves its home operator's network and accesses another operator's visited network, the core network equipment of the home and visited networks are provided by different vendors. This requires technical adaptation to achieve seamless roaming across vendors and operators, ensuring service continuity and quality of service for users.

[0003] Currently, in 5G core network cross-network roaming scenarios where multiple manufacturers' equipment coexist, there is often a difficulty in compatibility and adaptation of different service information of multiple manufacturers' equipment in cross-network roaming, such as different authentication mechanisms and signaling formats. This makes it difficult to achieve seamless roaming across manufacturers and operators, which affects the continuity of user services and the quality of roaming services. Summary of the Invention

[0004] The purpose of this invention is to provide a roaming compatibility adaptation system and method. By configuring a three-level architecture of decision control layer, adaptation conversion layer and access execution layer in the roaming compatibility adaptation system, multi-dimensional compatibility of business information between devices from multiple manufacturers can be achieved, thereby improving the quality of roaming services.

[0005] To achieve the above objectives, embodiments of the present invention provide a roaming compatibility adaptation system, including a decision control layer, an adaptation conversion layer, and an access execution layer; The decision control layer includes an adaptation rule management module, which is used to store and manage compatibility adaptation rules for devices from multiple manufacturers. The adaptation and conversion layer is used to invoke the compatibility and adaptation rules to realize the conversion and adaptation of business information between devices from different manufacturers. The access execution layer includes a manufacturer-adaptive interface gateway. The manufacturer-adaptive interface gateway is configured with a standard interface and multiple manufacturer-specific interfaces for various manufacturers' equipment. The manufacturer-adaptive interface gateway is used to identify and invoke the manufacturer-specific interfaces and to perform data interaction with the core network equipment of the corresponding manufacturer's equipment through the manufacturer-specific interfaces.

[0006] As an improvement to the above scheme, the compatibility and adaptation rules include an authentication rule mapping table, a unified QoS mapping table, a signaling field mapping table, a unified user status format, and a unified fault alarm format. The service information includes at least one of the following: authentication information, QoS parameters, signaling fields, user status information, and fault alarm information. As an improvement to the above scheme, the authentication rule mapping table includes the mapping relationship between authentication information of multiple manufacturers' equipment and standard authentication information; The adaptation and conversion layer includes an authentication adaptation module, which is used to call the authentication rule mapping table to convert the authentication information of the manufacturer's equipment into standard authentication information.

[0007] As an improvement to the above solution, the unified QoS mapping table includes the mapping relationship between QoS parameters of multiple manufacturers' devices and standard QoS parameters under different communication service scenarios; The adaptation and conversion layer includes a unified QoS module, which is used to call the unified QoS mapping table and the current communication service scenario to convert the QoS parameters of the manufacturer's equipment into standard QoS parameters.

[0008] As an improvement to the above solution, the signaling field mapping table includes the mapping relationship between custom signaling fields of multiple manufacturers' equipment and standard signaling fields; The adaptation and conversion layer includes a signaling conversion module, which is used to call the signaling field mapping table and convert the signaling fields of the manufacturer's equipment into standard signaling fields through a field matching and replacement mechanism.

[0009] As an improvement to the above solution, the user status is uniformly formatted as JSON standard format, and the user status information includes the user's unique identifier, the equipment of the manufacturer to which the user belongs, the equipment of the roaming manufacturer, the user's registration information, the user's session information, and the user's location status. The adaptation and conversion layer includes a state synchronization module, which is used to convert the user state information of the user terminal into the JSON standard format.

[0010] As an improvement to the above solution, the unified format for the fault alarm is the JSON standard format; The adaptation and conversion layer includes a fault coordination module, which is used to convert the fault alarm information of the manufacturer's equipment into the JSON standard format.

[0011] As an improvement to the above scheme, the decision control layer also includes an emergency triggering module, which is used to activate all modules in the adaptation and conversion layer within a preset time when an emergency triggering signal is received.

[0012] This invention also provides a roaming compatibility adaptation method, applied to the roaming compatibility adaptation system as described in any of the above embodiments, the method comprising: The access execution layer receives roaming requests forwarded by the roaming manufacturer's equipment of the user terminal through a standard interface, identifies the home manufacturer's equipment of the user terminal based on the roaming request, calls the corresponding manufacturer-specific interface based on the home manufacturer's equipment, realizes data interaction with the core network equipment of the home manufacturer's equipment through the manufacturer-specific interface, and sends the roaming request to the adaptation and conversion layer through the manufacturer-specific interface. The adaptation and conversion layer receives the roaming request, calls the compatibility and adaptation rules to the decision control layer, converts the business information related to the roaming request according to the compatibility and adaptation rules, generates standard business data, and sends the standard business data to the access execution layer; The access execution layer sends the standard service data to the core network of the roaming manufacturer's equipment through a standard interface.

[0013] As an improvement to the above solution, the roaming request is a roaming registration request, and the standard business data is a roaming registration response; The adaptation and conversion layer receives the roaming request, invokes the compatibility and adaptation rules to the decision control layer, converts the service information related to the roaming request according to the compatibility and adaptation rules, generates standard service data, and sends the standard service data to the access execution layer. Specifically: The adaptation and conversion layer receives the roaming registration request, calls the signaling field mapping table to the decision control layer, and converts the signaling fields of the roaming registration request into standard signaling fields; In addition, the authentication rule mapping table is called to the decision control layer to convert the authentication information of the roaming registration request into standard authentication information, and the standard authentication information is sent to the core network equipment of the home manufacturer's equipment through the manufacturer-specific interface of the access execution layer to obtain the authentication result; Furthermore, based on the standard signaling fields and the authentication result, the roaming registration response is generated and sent to the access execution layer.

[0014] As an improvement to the above scheme, the roaming request is a communication service request, and the standard service data is a standard communication service request; The adaptation and conversion layer receives the roaming request, invokes the compatibility and adaptation rules to the decision control layer, converts the service information related to the roaming request according to the compatibility and adaptation rules, generates standard service data, and sends the standard service data to the access execution layer. Specifically: The adaptation and conversion layer receives the communication service request, calls the signaling field mapping table to the decision control layer, and converts the signaling fields of the communication service request into standard signaling fields. In addition, the decision control layer is called to access the unified QoS mapping table to convert the QoS parameters of the communication service request into standard QoS parameters; In addition, the user status information of the user terminal is obtained through the manufacturer-specific interface of the access execution layer, and the user status information is converted into JSON standard format; Furthermore, based on the standard signaling fields, the standard QoS parameters, and the user status information in the JSON standard format, a standard communication service request is generated, and the standard communication service request is sent to the access execution layer.

[0015] Compared with existing technologies, the roaming compatibility adaptation system and method disclosed in this invention, through the configuration of a three-level architecture of decision control layer, adaptation conversion layer and access execution layer in the roaming compatibility adaptation system, enables the conversion of service information between devices from different manufacturers by storing and managing compatibility adaptation rules of multiple manufacturers' devices by the decision control layer, calling the corresponding compatibility adaptation rules by the adaptation conversion layer, and configuring standard interfaces and manufacturer-specific interfaces by the access execution layer, supporting the automatic identification and calling of standard interfaces and manufacturer-specific interfaces. Through the three-level architecture, multi-dimensional compatibility of service information between devices from multiple manufacturers is achieved, avoiding problems such as service information conflicts, incompatibility or asynchrony. This enables user terminals to roam seamlessly in heterogeneous network environments between 5G core network devices provided by different manufacturers, thereby improving the quality of roaming services. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a roaming compatibility adaptation system provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a preferred roaming compatibility adaptation system in an embodiment of the present invention; Figure 3 This is a schematic diagram of the interaction between each layer in the roaming compatibility adaptation system in an embodiment of the present invention; Figure 4 This is a schematic diagram illustrating the principle of authentication information processing in an embodiment of the present invention; Figure 5 This is a schematic diagram illustrating the principle of signaling field processing in an embodiment of the present invention; Figure 6 This is a flowchart illustrating a roaming compatibility adaptation method provided in an embodiment of the present invention; Figure 7 This is a schematic diagram comparing the implementation effects of multiple manufacturers' adaptations in the embodiments of the present invention. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0019] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0021] See Figure 1 This is a schematic diagram of the structure of a roaming compatibility adaptation system provided in an embodiment of the present invention. The embodiment of the present invention provides a roaming compatibility adaptation system 10, which includes a decision control layer 11, an adaptation conversion layer 12, and an access execution layer 13.

[0022] The decision control layer 11 includes an adaptation rule management module 111, which is used to store and manage compatibility adaptation rules for devices from multiple manufacturers. The adaptation and conversion layer 12 is used to call the compatibility and adaptation rules to realize the conversion and adaptation of business information between devices from different manufacturers. The access execution layer 13 includes a manufacturer adaptation interface gateway 131. The manufacturer adaptation interface gateway is configured with a standard interface and multiple manufacturer-specific interfaces for various manufacturers' equipment. The manufacturer adaptation interface gateway is used to identify and call the manufacturer-specific interfaces and to perform data interaction with the core network equipment of the corresponding manufacturer's equipment through the manufacturer-specific interfaces.

[0023] In this embodiment of the invention, a roaming compatibility adaptation system 10, also known as a multi-vendor compatibility adaptation center, is set up to achieve multi-dimensional compatibility and adaptation of business information between different vendors' devices in 5G core network cross-network roaming scenarios where multiple vendors' devices coexist, so as to solve problems such as business information conflicts, incompatibility or asynchrony between different vendors' devices.

[0024] To achieve the above objectives, this invention constructs a three-level centralized compatibility and adaptation architecture consisting of a "decision control layer, adaptation and conversion layer, and access execution layer," and deploys multi-vendor compatibility and adaptation centers at the provincial level to achieve efficient and stable operation of cross-vendor and inter-network roaming services.

[0025] In terms of architecture design, a decision control layer 11 is deployed in the roaming compatibility adaptation system 10, which includes at least an adaptation rule management module 111 for storing and managing compatibility adaptation rules for devices from multiple manufacturers.

[0026] Meanwhile, an adaptation conversion layer 12 is deployed in the roaming compatibility adaptation system 10. The adaptation conversion layer consists of several adaptation modules. By calling the compatibility adaptation rules in the adaptation rule management module 111, the compatibility adaptation issues of business information between different manufacturers' devices in different dimensions are handled respectively.

[0027] Furthermore, an access execution layer 13 is deployed in the roaming compatibility adaptation system 10, and a manufacturer adaptation interface gateway 131 is deployed in the access execution layer 13. This gateway supports the automatic identification of 3GPP standard interfaces and manufacturer-specific interfaces of multiple manufacturers' equipment. The manufacturer adaptation interface gateway automatically matches and calls the corresponding manufacturer-specific interfaces through the interface identification mechanism, and performs relevant protocol format conversions to improve the system's compatibility and scalability.

[0028] For example, dedicated access points for equipment from different manufacturers are as follows: Equipment from Manufacturer A: 10.200.1.1; Equipment from Manufacturer B: 10.200.1.2; Equipment from Manufacturer C: 10.200.1.3; Equipment from Manufacturer Ding: 10.200.1.4; By employing the technical means of this invention, a three-tier architecture—a decision control layer, an adaptation and conversion layer, and an access execution layer—is configured in the roaming compatibility and adaptation system. The decision control layer stores and manages compatibility and adaptation rules for devices from multiple manufacturers. The adaptation and conversion layer invokes the corresponding compatibility and adaptation rules to achieve the conversion of service information between devices from different manufacturers. The access execution layer configures standard interfaces and manufacturer-specific interfaces, supporting the automatic identification and invocation of standard interfaces and manufacturer-specific interfaces. Through this three-tier architecture, multi-dimensional compatibility of service information between devices from multiple manufacturers is achieved, avoiding problems such as service information conflicts, incompatibility, or asynchrony. This enables user terminals to roam seamlessly in heterogeneous network environments among 5G core network devices provided by different manufacturers, thereby improving the quality of roaming services.

[0029] As a preferred implementation, the embodiments of the present invention are further implemented on the basis of the above embodiments. In the 5G core network cross-network roaming scenario where multiple manufacturers' equipment coexist, it is difficult to be compatible and adapt to the different service information of multiple manufacturers' equipment in cross-network roaming. This is mainly reflected in the difficulty of being compatible and adapting to different authentication mechanisms, signaling formats and differentiated QoS parameter configuration requirements, as well as the difficulty of handling abnormal terminal misjudgment caused by the asynchronous user status during cross-network roaming.

[0030] To solve the above problems, see [link to relevant documentation]. Figure 2 and Figure 3 , Figure 2 This is a schematic diagram of the structure of a preferred roaming compatibility adaptation system in an embodiment of the present invention. Figure 3 This is a flowchart illustrating the interaction between different layers in the roaming compatibility and adaptation system in this embodiment of the invention. The compatibility and adaptation rules include an authentication rule mapping table, a unified QoS mapping table, a signaling field mapping table, a unified user status format, and a unified fault alarm format. The service information includes at least one of the following: authentication information, QoS (Quality of Service) parameters, signaling fields, user status information, and fault alarm information.

[0031] In this embodiment of the invention, the roaming compatibility adaptation system primarily addresses issues in the current 5G network caused by differences in protocols between different manufacturers' equipment, such as poor inter-network roaming compatibility, high authentication failure rate, inconsistent QoS parameters, inconsistent signaling fields, user status synchronization delay, and weak fault coordination capabilities.

[0032] Therefore, the adaptation rule management module 111 stores and manages authentication rule mapping tables, QoS unified mapping tables, and signaling field mapping tables between multiple manufacturers' devices, as well as user status unified format and fault alarm unified format and other compatibility adaptation rules.

[0033] The adaptation and conversion layer 12 includes several adaptation modules, specifically including an authentication adaptation module 121, a QoS unification module 122, a signaling conversion module 123, a status synchronization module 124, and a fault coordination module 125. These modules are used to call the authentication rule mapping table, the QoS unified mapping table, the signaling field mapping table, the user status unified format, and the fault alarm unified format respectively during user terminal roaming, thereby achieving compatibility and adaptation of authentication information, QoS parameters, signaling fields, user status information, and fault alarm information between devices from different manufacturers.

[0034] Preferably, the authentication rule mapping table includes a mapping relationship between authentication information of multiple manufacturers' devices and standard authentication information. The authentication adaptation module 121 is used to call the authentication rule mapping table to convert the authentication information of the manufacturers' devices into standard authentication information.

[0035] It should be noted that the authentication information comes from core network equipment from different manufacturers, such as AMF (Access and Mobility Management Function), SMF (Session Management Function), and UDM (Unified Data Management), and their original data formats and contents differ.

[0036] See Figure 4 This is a schematic diagram illustrating the principle of authentication information processing in an embodiment of the present invention. For example, equipment from manufacturer B uses "IMSI (International Mobile Subscriber Identity) + Simplified K" as the authentication element, while equipment from manufacturer C only uses "IMSI" for single authentication, and equipment from manufacturer D uses "IMSI + Temporary Code".

[0037] To achieve unified authentication, the system transforms the original authentication information through an authentication rule mapping table to generate standard authentication information, which adopts the form of "IMSI + Standard K".

[0038] As an example, the authentication adaptation module uses AES-256 and SHA-256 algorithms to convert authentication elements from different manufacturers. The specific process is as follows: Input: User IMSI, original authentication information (e.g., “MSI + Simplified K”, “IMSI”, “IMSI + Temporary Code”).

[0039] deal with: If it is equipment from Manufacturer B, use the AES-256 algorithm to encrypt the "simplified K" to generate the "standard K", that is, encrypt "IMSI + simplified K" using the AES-256 algorithm to generate "IMSI + standard K".

[0040] If it is equipment from manufacturer C, obtain the contract key K from the owner UDM and add it to "IMSI" to form "IMSI + standard K".

[0041] If it is equipment from manufacturer D, use the SHA-256 algorithm to encrypt the "temporary code" to generate the "standard K", that is, "IMSI + temporary code" is generated into "IMSI + standard K" using the SHA-256 algorithm.

[0042] Output: Standard authentication information "IMSI + Standard K".

[0043] The above conversion process is all completed in the authentication adaptation module, ensuring that the cross-vendor authentication success rate is greater than or equal to 99.9%.

[0044] Preferably, the unified QoS mapping table includes the mapping relationship between QoS parameters of multiple manufacturers' devices and standard QoS parameters under different communication service scenarios; the unified QoS module is used to call the unified QoS mapping table and the current communication service scenario to convert the QoS parameters of the manufacturers' devices into standard QoS parameters.

[0045] It should be noted that QoS parameters are defined by each manufacturer according to their own protocols, and the naming, value range, and priority definition of QoS parameters vary between different manufacturers' devices. Therefore, the system introduces a unified QoS mapping table to convert the QoS parameters of each manufacturer's devices into 3GPP standard QoS parameters.

[0046] Taking emergency voice service as an example, its QoS parameters are uniformly mapped as follows: 5QI = 5ARP = 1.

[0047] Its mapping logic is as follows: enter: QoS parameters of Manufacturer A (e.g., QCI=1), QoS parameters of Manufacturer B (e.g., QCI=1), QoS parameters of Manufacturer C (e.g., QCI=1), and QoS parameters of Manufacturer D (e.g., QCI=1).

[0048] Solution: Based on the unified QoS mapping table, set 5QI=5 and ARP=1.

[0049] Output: Standard QoS parameters (5QI=5, ARP=1).

[0050] This mapping relationship is implemented through a unified QoS module, ensuring consistent QoS guarantees for emergency sessions even when roaming across different networks. The unified QoS module uses a unified QoS mapping table to convert QoS parameters from various vendors into 3GPP standard QoS, guaranteeing QoS consistency for emergency sessions.

[0051] Preferably, the signaling field mapping table includes mapping relationships between custom signaling fields and standard signaling fields of multiple manufacturers' equipment; the signaling conversion module is used to call the signaling field mapping table and convert the signaling fields of the manufacturers' equipment into standard signaling fields through a field matching and replacement mechanism.

[0052] It should be noted that signaling fields are customized by different manufacturers according to their needs. The signaling field mapping table is used to resolve the issue of inconsistent field definitions between different manufacturers during signaling interaction.

[0053] See Figure 5 This is a schematic diagram illustrating the principle of signaling field processing in this embodiment of the invention. For example, suppose the user terminal's home device is B or C, and the roaming device is A. The custom field "Roam-Direction=1" of the B device needs to be mapped to the standard field "Service-Type=0x01" of the A device. However, the C device lacks the "Service-Capability" field in some signaling and needs to fill in "Service-Capability=0x01".

[0054] Based on the signaling field mapping table, the signaling conversion module uses a field matching and replacement mechanism to automatically convert standard signaling fields to manufacturer-specific fields, with a signaling conversion latency of less than or equal to 50ms.

[0055] Preferably, the user status is in a JSON standard format, and the user status information includes the user's unique identifier, the original manufacturer's equipment, the roaming manufacturer's equipment, the user's registration information, the user's session information, and the user's location status; the status synchronization module is used to convert the user status information of the user terminal into the JSON standard format.

[0056] The status synchronization module uses a standardized JSON format to convert user registration, session, and location status information into a standardized format, and synchronizes it in real time to the core network of each manufacturer's equipment through the access execution layer. Synchronized data includes: IMSI, the user's unique identifier belonging to the manufacturer's equipment, the roaming manufacturer's equipment of the user's original operator's equipment manufacturer, the registration status of the current roaming network equipment manufacturer, session status, location status, and timestamp. Specifically, the manufacturer registration status includes the GUTI (Globally Unique Temporary Identifier) ​​and registration time; the session status includes the session ID and QoS parameters; the location status includes latitude and longitude and ECGI (Cell Globally Unique Identifier); and the timestamp records the status update time.

[0057] The process for synchronizing user status information is as follows: Input: User IMSI, Home Manufacturer, Roaming Manufacturer, Registration Status, Session Status, Location Status.

[0058] Processing: Encapsulate the above information into JSON format, including IMSI, home manufacturer, roaming manufacturer, registration status (including GUTI and registration time), session status (including session ID and QoS), location status (including latitude and longitude and ECGI), and timestamp.

[0059] Output: User status information in standardized JSON format.

[0060] The state synchronization module adopts the JSON standardized format to synchronize user registration, session and location status in real time. The JSON format user status information is transmitted to each access execution layer in real time through the state synchronization module to ensure that the user status synchronization latency is less than or equal to 100ms.

[0061] Preferably, the fault alarm format is a JSON standard format; the fault coordination module is used to convert the fault alarm information of the manufacturer's equipment into a JSON standard format.

[0062] The fault coordination module converts alarm information from various manufacturers into a unified JSON format, which includes the following fields: Network element type: AMF / SMF / SEPP; Fault severity: critical / major / minor; Scope of impact: Expected restoration time for administrative codes; For example, the "AMF down" text alarm from Manufacturer B's equipment is converted to: json { "ne_type": "AMF", "fault_level": "critical", } The conversion process is completed by the fault coordination module, which converts alarm information from various manufacturers into a unified format to ensure cross-network alarm synchronization and automatic switching, with a fault switching latency of less than or equal to 1 second.

[0063] In a preferred embodiment, the decision control layer 11 further includes an emergency triggering module 112, which is used to activate all modules in the adaptation and conversion layer within a preset time when an emergency triggering signal is received.

[0064] In this embodiment of the invention, in an emergency scenario, the compatibility and adaptation center can activate all adaptation modules in the adaptation conversion layer 12 within 5 minutes after receiving an emergency trigger signal, and ensure the reliability and stability of inter-network roaming services through real-time monitoring and automatic verification mechanisms.

[0065] For example, the emergency trigger signal includes, but is not limited to, regulatory instructions, network failure signals, and service trigger signals.

[0066] By employing the technical means of this invention, in 5G core network inter-network roaming scenarios where multiple manufacturers' equipment coexist, multi-dimensional compatibility and adaptation are achieved for the differentiated authentication mechanisms, QoS parameter configurations, signaling formats, and user states adopted by different manufacturers' equipment. This effectively addresses issues such as authentication conflicts, signaling incompatibility, and user state asynchrony caused by equipment heterogeneity during inter-network roaming. It ensures the real-time performance, consistency, and reliability of inter-network roaming services in cross-operator environments, especially in emergency communication scenarios such as extreme disasters, enabling continuous and efficient collaboration of inter-manufacturer and cross-operator inter-network roaming services.

[0067] See Figure 6 This is a flowchart illustrating a roaming compatibility adaptation method provided in an embodiment of the present invention. The present invention also provides a roaming compatibility adaptation method applied to the roaming compatibility adaptation system 10 as described in any of the above embodiments. The method includes steps S11 to S13: S11. The access execution layer receives the roaming request forwarded by the roaming manufacturer's equipment of the user terminal through a standard interface, identifies the home manufacturer's equipment of the user terminal according to the roaming request, calls the corresponding manufacturer-specific interface according to the home manufacturer's equipment, realizes data interaction with the core network equipment of the home manufacturer's equipment through the manufacturer-specific interface, and sends the roaming request to the adaptation and conversion layer through the manufacturer-specific interface. S12. The adaptation and conversion layer receives the roaming request, calls the compatibility and adaptation rules to the decision control layer, converts the business information related to the roaming request according to the compatibility and adaptation rules, generates standard business data, and sends the standard business data to the access execution layer. S13. The access execution layer sends the standard service data to the core network of the roaming manufacturer's equipment through a standard interface.

[0068] In this embodiment of the invention, when a user terminal belonging to manufacturer A's equipment roams into the network of manufacturer B's equipment, the user terminal sends a roaming request to the core network of manufacturer B's equipment. The request carries information such as the IMSI, the identifier of manufacturer A's equipment, and the protocol format. Since manufacturer B's equipment cannot parse manufacturer A's proprietary protocol, it forwards the request to the standard interface of the system's access execution layer through a standard interface. The access execution layer parses the identifier of manufacturer A's equipment in the request and automatically matches the manufacturer A's dedicated interface corresponding to the equipment. Then, the access execution layer converts the roaming request into a system-wide common format through manufacturer A's dedicated interface and forwards it to the adaptation and conversion layer. The adaptation and conversion layer, in collaboration with the decision control layer, performs compatibility adaptation processing on the service information related to the roaming request, converting it into standard service data.

[0069] Understandably, the access execution layer is the interface through which the roaming compatibility adaptation system interacts with the outside world. When the adaptation conversion layer needs to request information from external core network devices or other equipment during the processing of roaming request-related business information, it obtains the information through the interface of the access execution layer. For example, the authentication adaptation module in the adaptation conversion layer interacts with the UDM of the device of manufacturer A through the dedicated interface of manufacturer A's device called by the access execution layer to complete the authentication process.

[0070] The adaptation and conversion layer sends the standard service data to the access execution layer, which then sends the standard service data to the core network of the roaming manufacturer's equipment through a standard interface, so that the core network of the roaming manufacturer's equipment can receive the standard service data or respond to the roaming request based on the standard service data.

[0071] The roaming request includes a roaming registration request and a specific communication service request.

[0072] In one embodiment, the roaming request is a roaming registration request, and the standard service data is a roaming registration response.

[0073] Then, in step S12, that is, the adaptation and conversion layer receives the roaming request, calls the compatibility adaptation rule to the decision control layer, converts the service information related to the roaming request according to the compatibility adaptation rule, generates standard service data, and sends the standard service data to the access execution layer, specifically: The adaptation and conversion layer receives the roaming registration request, calls the signaling field mapping table to the decision control layer, and converts the signaling fields of the roaming registration request into standard signaling fields; In addition, the authentication rule mapping table is called to the decision control layer to convert the authentication information of the roaming registration request into standard authentication information, and the standard authentication information is sent to the core network equipment of the home manufacturer's equipment through the manufacturer-specific interface of the access execution layer to obtain the authentication result; Furthermore, based on the standard signaling fields and the authentication result, the roaming registration response is generated and sent to the access execution layer.

[0074] In another embodiment, the roaming request is a communication service request, and the standard service data is a standard communication service request; Then, in step S12, that is, the adaptation and conversion layer receives the roaming request, calls the compatibility adaptation rule to the decision control layer, converts the service information related to the roaming request according to the compatibility adaptation rule, generates standard service data, and sends the standard service data to the access execution layer, specifically: The adaptation and conversion layer receives the communication service request, calls the signaling field mapping table to the decision control layer, and converts the signaling fields of the communication service request into standard signaling fields. In addition, the decision control layer is called to access the unified QoS mapping table to convert the QoS parameters of the communication service request into standard QoS parameters; In addition, the user status information of the user terminal is obtained through the manufacturer-specific interface of the access execution layer, and the user status information is converted into JSON standard format; Furthermore, based on the standard signaling fields, the standard QoS parameters, and the user status information in the JSON standard format, a standard communication service request is generated, and the standard communication service request is sent to the access execution layer.

[0075] As an example, taking a user terminal belonging to Manufacturer B's equipment roaming to Manufacturer C's network as an example, the roaming request processing flow is as follows: Registration phase: The response needs to be forwarded through the access execution layer.

[0076] Step 1, Request Initiation and Reception: The user terminal of Manufacturer B's equipment sends a roaming registration request to the AMF of Manufacturer C's equipment (carrying the IMSI, Manufacturer B's equipment identifier, and the protocol format is Manufacturer B's proprietary SBI protocol). The AMF of Manufacturer C's equipment cannot parse Manufacturer B's proprietary protocol. Therefore, it forwards the request to the standard interface of the adaptation center's access execution layer (such as IP: 10.200.1.0, the unified external entry point of the adaptation center) through the 3GPP standard N32 interface.

[0077] Step 2: Access the execution layer matching interface and forward: Access execution layer resolves the device identifier of Manufacturer B in the request and automatically matches Manufacturer B's dedicated interface (IP: 10.200.1.2). The access execution layer uses a dedicated interface from Manufacturer B to convert the request from Manufacturer C's N32 format to the general JSON format used internally by the adaptation center, and then forwards it to the authentication and adaptation module of the adaptation conversion layer.

[0078] Step 3: Adaptation and conversion layer and decision control layer collaborative processing: The authentication adaptation module requests the authentication rules (AES-256 encryption algorithm, standard K generation logic) from the adaptation rule management module of the decision control layer. The authentication adaptation module converts the authentication information of Manufacturer B, "IMSI + Simplified K", into "IMSI + Standard K" and sends it to the UDM of the manufacturer B through the dedicated interface of Manufacturer B for verification, and obtains the "authentication successful" result; The signaling conversion module calls the signaling mapping table of the decision control layer to convert the manufacturer's proprietary signaling (such as "Roam-Direction=1") into 3GPP standard signaling (such as "Service-Type=0x01"). The adaptation and conversion layer integrates the authentication results with standard signaling, generates a roaming registration response (internal JSON format), and forwards it to the access execution layer.

[0079] Step 4: The access execution layer forwards the response to Manufacturer C's AMF: The access execution layer converts the internal JSON format response into the N32 protocol format compatible with AMF from Manufacturer C through Manufacturer B's dedicated interface; The access execution layer forwards the response to Manufacturer C's AMF through the standard interface (10.200.1.0) to complete the registration.

[0080] Business phase: Standard data needs to be forwarded through the access execution layer.

[0081] Step 1: Initiating and reusing business requests via interfaces: The user terminal of Manufacturer B's equipment initiates an emergency voice communication service request to Manufacturer C's AMF, carrying the session type, QoS requirements, and the protocol format is Manufacturer B's proprietary SBI protocol. Manufacturer C's AMF directly forwards the request to Manufacturer B's dedicated interface in the access execution layer via the 3GPP standard N32 interface (at this time, the interface bound during the registration phase is reused, and there is no need to re-match).

[0082] Step 2: The access execution layer forwards the request to the adaptation and conversion layer: The access execution layer uses Manufacturer B's dedicated interface to convert the request from Manufacturer C's N32 format to its internal JSON format and forward it to the adaptation and conversion layer.

[0083] Step 3: Adaptation and conversion layer and decision control layer collaborative processing: The authentication adaptation module reuses the successful authentication result from the registration phase, eliminating the need to repeatedly request authentication from vendor B's UDM. The QoS unified module calls the QoS unified mapping table for the emergency voice service scenario in the decision control layer to convert the QoS parameters of vendor B (such as "QCI=1-02") into 3GPP standard parameters ("5QI=5, ARP=1"). The state synchronization module encapsulates user state (IMSI, location, session ID) in JSON format; The adaptation and conversion layer integrates standard QoS, standard signaling, and status data to generate standard communication service requests (internal JSON format) for emergency voice calls, which are then forwarded to the access execution layer.

[0084] Step 4: Access execution layer forwards standard data to Manufacturer C's AMF: The access execution layer uses a dedicated interface from Manufacturer B to convert the internal JSON format results into an N32 protocol format compatible with Manufacturer C's AMF, such as encoding QoS parameters in JSON format into an ASN.1 format recognizable by Manufacturer C's SMF. The access execution layer forwards standard communication service requests to Manufacturer C's AMF through a standard interface; Manufacturer C's AMF calls Manufacturer C's SMF to allocate bandwidth resources, establish a session, and complete the emergency voice call.

[0085] See Figure 7 This is a schematic diagram comparing the implementation effects of multi-manufacturer adaptation in the embodiments of the present invention. It can be seen that the embodiments of the present invention are superior to traditional solutions in terms of authentication success rate, QoS adaptation accuracy, signaling conversion power, fault switching latency, and network return latency.

[0086] By employing the technical means of this invention, and configuring a three-tier architecture consisting of a decision control layer, an adaptation and conversion layer, and an access execution layer in the roaming compatibility adaptation system, compatible adaptation processing of service information related to roaming registration requests and specific communication service requests is achieved in 5G core network cross-network roaming scenarios where multiple vendors' equipment coexist, thereby improving the quality of roaming services. It should be noted that all the process steps of the roaming compatibility adaptation method provided in the embodiments of the present invention are executed by a roaming compatibility adaptation system in the above embodiments. The working principles and beneficial effects of the two correspond one-to-one, so they will not be described again.

[0087] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. The storage medium can be a magnetic disk, optical disk, read-only memory (ROM), or random access memory (RAM), etc.

[0088] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A roaming compatibility adaptation method, characterized in that, This system is applied to a roaming compatibility adaptation system, which includes a decision control layer, an adaptation conversion layer, and an access execution layer. The method includes: The access execution layer receives roaming requests forwarded by the roaming manufacturer's equipment of the user terminal through a standard interface, identifies the home manufacturer's equipment of the user terminal based on the roaming request, calls the corresponding manufacturer-specific interface based on the home manufacturer's equipment, realizes data interaction with the core network equipment of the home manufacturer's equipment through the manufacturer-specific interface, and sends the roaming request to the adaptation and conversion layer through the manufacturer-specific interface. The adaptation and conversion layer receives the roaming request, calls the compatibility and adaptation rules to the decision control layer, converts the business information related to the roaming request according to the compatibility and adaptation rules, generates standard business data, and sends the standard business data to the access execution layer; The access execution layer sends the standard service data to the core network of the roaming manufacturer's equipment through a standard interface; The compatibility and adaptation rules include an authentication rule mapping table, a unified QoS mapping table, a signaling field mapping table, a unified user status format, and a unified fault alarm format.

2. The roaming compatibility adaptation method as described in claim 1, characterized in that, The roaming request is a roaming registration request, and the standard business data is a roaming registration response; The adaptation and conversion layer receives the roaming request, invokes the compatibility and adaptation rules to the decision control layer, converts the service information related to the roaming request according to the compatibility and adaptation rules, generates standard service data, and sends the standard service data to the access execution layer. Specifically: The adaptation and conversion layer receives the roaming registration request, calls the signaling field mapping table to the decision control layer, and converts the signaling fields of the roaming registration request into standard signaling fields; In addition, the authentication rule mapping table is called to the decision control layer to convert the authentication information of the roaming registration request into standard authentication information, and the standard authentication information is sent to the core network equipment of the home manufacturer's equipment through the manufacturer-specific interface of the access execution layer to obtain the authentication result; Furthermore, based on the standard signaling fields and the authentication result, the roaming registration response is generated and sent to the access execution layer.

3. The roaming compatibility adaptation method as described in claim 1 or 2, characterized in that, The roaming request is a communication service request, and the standard service data is a standard communication service request; The adaptation and conversion layer receives the roaming request, invokes the compatibility and adaptation rules to the decision control layer, converts the service information related to the roaming request according to the compatibility and adaptation rules, generates standard service data, and sends the standard service data to the access execution layer. Specifically: The adaptation and conversion layer receives the communication service request, calls the signaling field mapping table to the decision control layer, and converts the signaling fields of the communication service request into standard signaling fields. In addition, the decision control layer is called to access the unified QoS mapping table to convert the QoS parameters of the communication service request into standard QoS parameters; In addition, the user status information of the user terminal is obtained through the manufacturer-specific interface of the access execution layer, and the user status information is converted into JSON standard format; Furthermore, based on the standard signaling fields, the standard QoS parameters, and the user status information in the JSON standard format, a standard communication service request is generated, and the standard communication service request is sent to the access execution layer.

4. A roaming compatibility adaptation system, characterized in that, Used to perform the roaming compatibility adaptation method as described in any one of claims 1 to 3; The system includes a decision control layer, an adaptation and conversion layer, and an access execution layer; The decision control layer includes an adaptation rule management module, which is used to store and manage compatibility adaptation rules for devices from multiple manufacturers. The adaptation and conversion layer is used to invoke the compatibility and adaptation rules to realize the conversion and adaptation of business information between devices from different manufacturers. The access execution layer includes a manufacturer-adaptive interface gateway. The manufacturer-adaptive interface gateway is configured with a standard interface and multiple manufacturer-specific interfaces for various manufacturers' equipment. The manufacturer-adaptive interface gateway is used to identify and invoke the manufacturer-specific interfaces and to perform data interaction with the core network equipment of the corresponding manufacturer's equipment through the manufacturer-specific interfaces.

5. The roaming compatibility adaptation system as described in claim 4, characterized in that, The compatibility and adaptation rules include an authentication rule mapping table, a unified QoS mapping table, a signaling field mapping table, a unified user status format, and a unified fault alarm format. The service information includes at least one of the following: authentication information, QoS parameters, signaling fields, user status information, and fault alarm information.

6. The roaming compatibility adaptation system as described in claim 5, characterized in that, The authentication rule mapping table includes the mapping relationship between authentication information of multiple manufacturers' equipment and standard authentication information; The adaptation and conversion layer includes an authentication adaptation module, which is used to call the authentication rule mapping table to convert the authentication information of the manufacturer's equipment into standard authentication information.

7. The roaming compatibility adaptation system as described in claim 5, characterized in that, The unified QoS mapping table includes the mapping relationship between QoS parameters of multiple manufacturers' devices and standard QoS parameters under different communication service scenarios; The adaptation and conversion layer includes a unified QoS module, which is used to call the unified QoS mapping table and the current communication service scenario to convert the QoS parameters of the manufacturer's equipment into standard QoS parameters.

8. The roaming compatibility adaptation system as described in claim 5, characterized in that, The signaling field mapping table includes the mapping relationship between custom signaling fields and standard signaling fields of multiple manufacturers' equipment; The adaptation and conversion layer includes a signaling conversion module, which is used to call the signaling field mapping table and convert the signaling fields of the manufacturer's equipment into standard signaling fields through a field matching and replacement mechanism.

9. The roaming compatibility adaptation system as described in claim 5, characterized in that, The user status is uniformly formatted in JSON standard format, and the user status information includes the user's unique identifier, the manufacturer's equipment to which the user belongs, the manufacturer's equipment to which the user is roaming, the user's registration information, the user's session information, and the user's location status. The adaptation and conversion layer includes a state synchronization module, which is used to convert the user state information of the user terminal into the JSON standard format.

10. The roaming compatibility adaptation system as described in claim 5, characterized in that, The fault alarm is uniformly formatted in JSON standard format; The adaptation and conversion layer includes a fault coordination module, which is used to convert the fault alarm information of the manufacturer's equipment into the JSON standard format.

11. The roaming compatibility adaptation system as described in any one of claims 4 to 10, characterized in that, The decision control layer also includes an emergency triggering module, which is used to activate all modules in the adaptation and conversion layer within a preset time when an emergency triggering signal is received.

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