5G UDR Restart Notification for Faster User Data Synchronization

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Solution Overview

Problem

In 5G networks, the Unified Data Management (UDM) network elements cannot detect real-time faults or crashes in Unified Data Repository (UDR) network elements, leading to untimely data synchronization and poor disaster tolerance of user data equipment.

Innovation Solution

A method and device that sends a restart notification message from the UDR network element to each UDM network element after a restart event, enabling timely data synchronization and ensuring disaster tolerance by triggering data resynchronization processes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the UDR network element restarts after a fault or crash, then the system can recover and continue operation, but the UDM network elements cannot detect the restart event in real time, leading to delayed data synchronization

Engineering Contradiction:

Improvedisaster tolerance of user data equipmentVSAvoiddata synchronization time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The UDR network element is configured to proactively send a restart notification message to all UDM network elements immediately after a restart event occurs. This preliminary action of notifying other elements before they can detect the failure through passive monitoring ensures that the UDM elements can promptly initiate data resynchronization procedures, thereby reducing synchronization delay while maintaining system reliability

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

A feedback mechanism is established where the UDR network element sends restart notification messages to UDM network elements. This feedback loop allows the UDM elements to receive real-time information about UDR restart events, enabling them to及时调整 their data synchronization operations and maintain up-to-date user data across the network

Inventive Principle:

Principle #23Feedback

2Device complexity

If the UDM network elements passively monitor for faults, then the system structure remains simple, but real-time fault detection capability is insufficient

Engineering Contradiction:

Improvemonitoring system complexityVSAvoidfault detection precision

Core Design Contradiction:

Device complexityVSMeasurement precision

Solution Approach 1:

Instead of having UDM network elements actively monitor or poll the UDR network element for faults (which would increase complexity), the solution inverts the approach by having the UDR network element actively notify UDM elements of restart events. This inversion maintains simple monitoring system architecture while achieving real-time fault detection precision through the notification mechanism

Inventive Principle:

Principle #13The other way round (Inversion)

Data Source

PatentUS12401731B2User data disaster tolerance method, device, network element device and storage medium

Publication Date: 2025.08.26 CHINA MOBILE COMM GRP CO LTD

AI summary

A user data disaster tolerance method, a device, a network element device and a storage medium are provided. The method includes: after the UDR network element is restarted, sending a first message to each UDM network element in a UDM network element set; where the first message is configured to notify a restart event of the UDR network element.