NWDAF Registration Path Segmentation in UDM

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Solution Overview

Problem

In communication technology, when multiple Network Data Analytic Functions (NWDAFs) serve the same terminal device, their registration information often overwrites each other due to the lack of unique storage paths in unified data management (UDM).

Innovation Solution

The method involves adding an identifier of the NWDAF to the location information sent to the UDM, allowing registration information from different NWDAFs to be stored in distinct locations within the UDM, thereby preventing overwriting.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If multiple NWDAFs register terminal device information in the same UDM using unified storage paths, then data management is simplified, but registration information from different NWDAFs overwrites each other

Engineering Contradiction:

Improvedata management complexityVSAvoiddata integrity

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent segments the unified storage path into unique sub-paths by appending NWDAF identifiers and analytics event identifiers. Each NWDAF's registration information is stored in a distinct location within the UDM, preventing overwriting while maintaining unified data management architecture.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies local quality by making the storage path specific to each NWDAF and analytics event combination. The location information includes NWDAF identifier and analytics event identifier, creating unique storage destinations tailored to each NWDAF's specific service context.

Inventive Principle:

Principle #3Local quality

2Ease of operation

If NWDAFs use the same location information for registration, then the registration process is simplified, but update operations affect all NWDAFs instead of specific ones

Engineering Contradiction:

Improveregistration operation simplicityVSAvoidupdate specificity

Core Design Contradiction:

Ease of operationVSAdaptability or versatility

Solution Approach 1:

The patent segments the location information into a base path plus unique identifiers (NWDAF ID and analytics event ID). This allows the registration process to remain simple while enabling precise targeting of update operations to specific NWDAFs and their associated analytics events.

Inventive Principle:

Principle #1Segmentation

3Device complexity

If NWDAFs register information without unique location identifiers, then the system is easier to implement, but deletion operations cannot target specific NWDAFs

Engineering Contradiction:

Improvesystem implementation complexityVSAvoiddeletion operation precision

Core Design Contradiction:

Device complexityVSEase of operation

Solution Approach 1:

The patent incorporates NWDAF identifiers and analytics event identifiers into the location information at the time of registration. This preliminary action ensures that deletion operations can later precisely target the correct NWDAF and analytics event combination without requiring additional identification steps.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12294618B2Method and apparatus for registering user information

Publication Date: 2025.05.06 DATANG MOBILE COMM EQUIP CO LTD

AI summary

Provided in the present application are a method and apparatus for registering user information, which are used for solving the problem of multiple pieces of registration information covering one another due to NWDAFs registering registration information of a terminal device to a UDM. The method includes a network data analytic function (NWDAF) acquiring registration information of a terminal device; and the NWDAF sending a registration request to a unified data management (UDM) function, and the registration request includes the registration information and location information, which is used for identifying a storage path of the registration information in the UDM, and the location information includes an identifier of the NWDAF.