5G Registration and Authentication via UDM-Validated RIDs
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Solution Overview
Problem
In the 5G mobile communication network, the AUSF may generate an invalid or inconsistent A-KID due to an incorrect RID, leading to failed user authentication and registration, as the network cannot accurately position the AAnF or UDM, resulting in unreliable service access.
Innovation Solution
The AUSF determines a valid RID by acquiring authentication information from the UDM, selecting significant digits from the MSIN based on pre-configured policies or UE negotiation to generate a valid A-KID, ensuring accurate positioning of AAnF and UDM, and sending a registration request to complete user authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the AUSF generates A-KID using a routing indicator (RID), then user registration can be completed, but the RID may be invalid or inconsistent causing authentication failure
Solution Approach 1:
The patent applies preliminary action by having the AUSF acquire authentication information from the UDM before generating the A-KID. This allows the AUSF to obtain a valid RID in advance from the authentication information, ensuring that the RID used for A-KID generation is consistent and valid, thereby preventing authentication failures while maintaining registration completion
Solution Approach 2:
The patent implements feedback by having the AUSF verify the validity of the RID through authentication information acquisition from the UDM. This feedback mechanism ensures that the RID is validated before being used to generate the A-KID, creating a closed-loop system that prevents invalid RID usage and ensures authentication reliability
2Measurement precision
If the AUSF uses an incorrect RID, then the A-KID becomes invalid, but the network cannot accurately position the AAnF or UDM
Solution Approach 1:
The patent applies preliminary action by acquiring authentication information containing the valid RID from the UDM before generating the A-KID. This ensures that the correct RID is obtained in advance, enabling accurate AAnF positioning and preventing authentication information inconsistency, thereby resolving both the positioning accuracy and information consistency issues simultaneously
3Reliability
If the A-KID generated by the AUSF does not match the A-KID generated by the UE, then registration fails, but service access cannot be ensured
Solution Approach 1:
The patent applies preliminary action by having the AUSF acquire the valid RID from the UDM's authentication information before generating the A-KID. This ensures that both the UE and AUSF use the same valid RID to generate matching A-KIDs, thereby ensuring registration success while maintaining service access reliability
Solution Approach 2:
The patent implements parameter changes by modifying the RID parameter to ensure it is valid and consistent. By acquiring the RID from authentication information and ensuring its validity, the patent changes the RID parameter state to guarantee that A-KID generation at both UE and AUSF produces matching results, thereby ensuring both registration success and service access reliability
Data Source
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AI summary
Provided are a registration method and apparatus, an authentication method and apparatus, a routing indicator determination method and apparatus, an entity, and a terminal. The registration method includes acquiring authentication information of a unified data management (UDM); determining a routing indicator (RID) according to the authentication information; and sending a registration request to a key anchor function according to the RID. The authentication method includes checking a stored RID according to an authentication request of an authentication server function (AUSF); and sending authentication information to the AUSF according to a check result. The routing indicator determination method includes acquiring authentication information of a UDM; and determining an RID according to the authentication information.