Dynamic Network Data Subscription Management for NWDAF
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for collecting network data lack flexibility in parameter settings, making it difficult to adapt or modify subscriptions for event notifications in network function devices, which limits the ability to respond to changing network situations.
Innovation Solution
A network data collection method that involves transmitting a subscription message to network function devices and receiving event notifications, allowing for updates or modifications of existing subscriptions, specifically using messages like Nnf_EventExposure_Subscribe and Nnf_EventExposure_Notify to manage event subscriptions across different types of network function devices such as NEF, AMF, UDM, PCF, and SMF.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If parameters for collecting network data are determined at the time of collection, then the data collection process is simple and stable, but the parameters cannot be changed once determined, reducing adaptability
Solution Approach 1:
The patent implements dynamic subscription management by allowing the NWDAF to update subscription parameters (such as event filters, reporting configurations, and target identifiers) after initial subscription establishment. The NF device receives update requests from the NWDAF and modifies existing subscriptions without requiring re-establishment, enabling adaptive parameter changes while maintaining subscription continuity.
Solution Approach 2:
The patent enables parameter changes by providing mechanisms to modify subscription characteristics including event filters, reporting formats, and target identifiers. The NF device stores and processes parameter update requests, allowing the subscription configuration to evolve based on changing network conditions and analytics requirements without breaking the subscription relationship.
2Adaptability or versatility
If event subscriptions are fixed after initial setup, then the system is stable and easy to manage, but it cannot respond to changing network situations, reducing responsiveness
Solution Approach 1:
The patent implements feedback mechanisms where the NF device monitors network events and subscription status, then provides update requests to the NWDAF when changes are detected. The system continuously exchanges information about event occurrences, subscription validity, and parameter relevance, enabling automatic adaptation to network changes while maintaining operational simplicity through standardized feedback loops.
Solution Approach 2:
The patent enables preliminary updates by allowing the NWDAF to pre-configure multiple subscription scenarios and activate them based on network conditions. The NF device stores pre-defined subscription templates that can be quickly deployed when specific network situations arise, enabling rapid response to changing conditions without ad-hoc configuration complexity.
3Adaptability or versatility
If the system supports multiple types of NF devices (NEF, AMF, UDM, PCF, SMF), then the system is versatile and can collect diverse network data, but the complexity of managing different subscription message formats increases
Solution Approach 1:
The patent implements universal subscription management by defining a common message structure and interface that works across all NF device types (NEF, AMF, UDM, PCF, SMF). The Nnf_EventExposure_Subscribe and Nnf_EventExposure_Notify messages use standardized formats that can carry device-specific information, allowing a single subscription mechanism to serve multiple NF types without requiring separate management procedures for each device type.
Data Source
AI summary
A network data collection method from network function device for network data analytic function is disclosed. The network data collection method includes transmitting a Nnf_EventExposure_Subscribe message to subscribe for an event into the NF device; and receiving a Nnf_EventExposure_Notify message from the NF device, wherein, when a subscription for the event is already defined in the NF device, the subscription is updated or modified.