NWDAF Selection via NRF Performance Parameters
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Solution Overview
Problem
Current NWDAF network element selection methods for 5G network automation in 3GPP R16 focus mainly on scenarios and big data analysis requirements, leading to suboptimal performance due to the lack of standardized big data analysis algorithms and varying processing times and accuracy among different NWDAF network elements.
Innovation Solution
An NWDAF network element selection method that involves transmitting a service discovery request to an NRF network element to obtain performance parameter information of available NWDAF network elements, allowing for the selection of a target network element based on performance parameters such as average predicted confidence for data analysis services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If NWDAF network element selection is based on scenario and big data analysis requirements, then the system can support network automation functionality, but the performance is suboptimal due to varying processing times and accuracy among different NWDAF network elements
Solution Approach 1:
The NRF (Network Repository Function) acts as an intermediary between the service requesting network element and the NWDAF network elements. The NRF stores performance parameter information of multiple NWDAF network elements and provides this information to the requester, enabling informed selection without the requester needing to directly evaluate multiple NWDAF elements. This mediator approach resolves the contradiction by centralizing the complexity of performance evaluation while enabling reliable selection.
Solution Approach 2:
The performance parameter information of NWDAF network elements is pre-collected and stored in the NRF before actual service requests. This preliminary action includes gathering data about processing times, accuracy metrics, and other performance indicators. When a service request arrives, the selection can be made quickly based on pre-evaluated information, resolving the contradiction between reliable selection and selection complexity.
2Adaptability or versatility
If multiple NWDAF network elements are available for different scenarios, then service coverage is improved, but selecting the most suitable element becomes complex without standardized performance metrics
Solution Approach 1:
The invention introduces specific performance parameters (processing time, accuracy metrics, confidence levels) to characterize NWDAF network element performance. By changing from qualitative scenario-matching to quantitative parameter-based evaluation, the system enables precise measurement and comparison of different NWDAF elements. This allows adaptability across multiple scenarios while providing precision in selecting the most suitable element for each specific request.
3Productivity
If NWDAF network element selection does not consider performance parameters, then the selection process is simple, but the processing time and accuracy of data analysis services vary significantly
Solution Approach 1:
The system implements feedback by collecting performance parameter information from NWDAF network elements and using this feedback to inform future selections. The NRF continuously updates performance metrics based on actual service delivery, creating a closed-loop system where past performance informs future decisions. This feedback mechanism ensures that selections are made based on proven performance, reducing processing time variations and improving overall productivity.
Data Source
AI summary
Aspects of the disclosure provide methods and apparatuses for network data analytics. In some examples, an apparatus includes processing circuitry. The processing circuitry transmits a network data analytics function (NWDAF) service discovery request to a network repository function (NRF) network element. The NWDAF service discovery request indicates a requested network data analysis service. The processing circuitry receives an NWDAF service discovery response in response to the NWDAF service discovery request. The NWDAF service discovery response includes performance parameter information of one or more NWDAF network elements for the requested network data analysis service. Further, the processing circuitry selects, according to the performance parameter information of the one or more NWDAF network elements for the requested network data analysis service, a target NWDAF network element used for providing the requested network data analysis service, and transmits an NWDAF service request to the target NWDAF network element.