NWDAF Data Source Switching for Mobile Analytics Continuity
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently collecting and maintaining data analytics as mobile devices move between network functions, leading to disruptions in data collection and analysis.
Innovation Solution
The implementation of a network data analytics function (NWDAF) that collects data from various network functions (NFs) and adapts to changes in serving NFs as a mobile device moves across different service areas, utilizing service-based interfaces and network entities like UDM, NRF, and DCCF to determine and switch data sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a mobile device moves between network functions, then the device can maintain connectivity across different service areas, but data collection and analytics may be disrupted
Solution Approach 1:
The system implements feedback mechanisms where network functions notify the NWDAF about data source changes. When a mobile device moves between network functions, the new network function detects the change and sends notifications to the NWDAF, enabling the system to adapt and maintain continuous data collection despite device mobility
Solution Approach 2:
The NWDAF acts as an intermediary between multiple network functions and data sources. It receives notifications from various network functions about data source changes and coordinates the transition to new data sources, ensuring continuous analytics operation without direct coupling between mobile devices and specific network functions
2Reliability
If the system maintains data collection as devices move, then analytics continuity is improved, but system complexity increases due to multiple network functions and coordination
Solution Approach 1:
The NWDAF is designed as a universal function that can interact with multiple different network functions through standardized service-based interfaces. It performs multiple roles including receiving notifications, determining appropriate data sources, and managing data collection across different network contexts, reducing the need for separate specialized functions for each network element
Solution Approach 2:
The system segments the data collection and analytics function into a separate NWDAF entity that is independent of specific network functions. This segmentation allows the analytics function to be maintained separately from the mobile device and specific network functions, enabling continuous operation through coordinated interactions rather than monolithic complexity
3Loss of information
If the system switches data sources when devices move, then data relevance is maintained, but time is lost during the transition process
Solution Approach 1:
The system performs preliminary actions by establishing notification mechanisms in advance. Network functions are pre-configured to notify the NWDAF about data source changes, and the NWDAF maintains readiness to switch data sources by having the capability to determine new data sources from notifications, reducing transition time when actual moves occur
Data Source
AI summary
Methods, apparatuses, and systems for providing and maintaining data analytics and data collection as a mobile device disconnects from one network function and connects to another network function. In one aspect, a wireless communication method is disclosed. The method includes receiving, by a first network function operating in a core network of a wireless communication system in which data analytics information or data collection is provided, a notification of a data source change from a first data source to a second data source. The method further includes determining, by the first network element, a second network function associated with the second data source, and transmitting, by the first network function, a request to the second network function for the data analytics information or data collection. The method includes receiving the data analytics information or data collection from the second network function.