Network Function Entity NEF Selection in 5G Edge Computing
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Solution Overview
Problem
In edge computing networks, particularly in 5G systems, the selection and exposure of optimal local network exposure function entities (NEFs) for data communication sessions are complex, leading to operational overhead, especially when the application function entity and the network operator are different, and there is a need for efficient discovery and redirection of NEFs to ensure low latency and quality of service.
Innovation Solution
A method and apparatus that enable a network function entity to determine and provide information about suitable local NEFs to application function entities, allowing them to select or redirect data communication sessions to optimal NEFs based on location information, such as user plane function locations, and assist in discovering or selecting the most suitable NEF for improved latency and service quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the application function entity directly selects local network exposure function entities without assistance, then the selection process becomes complex and time-consuming, but the system maintains full control over the selection process
Solution Approach 1:
The patent introduces a network function entity as an intermediary that assists the application function entity in selecting local network exposure function entities. This intermediary receives requests from the application function, determines suitable local NEFs based on location information and other criteria, and provides the selection information back to the application function. This resolves the contradiction by simplifying the operation for the application function while maintaining system control through the intermediary's decision-making process.
2Adaptability or versatility
If multiple local network exposure function entities are exposed to application function entities, then the chances of finding an optimal NEF increase, but the operational overhead and complexity increase
Solution Approach 1:
The patent implements a mechanism where the network function entity determines and provides information about multiple suitable local network exposure function entities to the application function entity, rather than a single NEF. This allows the application function to have flexibility in selecting from multiple candidates while the network function manages the complexity of evaluating and presenting these options. This resolves the contradiction by providing adaptability through multiple choices while maintaining operational efficiency through automated determination and presentation of suitable options.
3Measurement precision
If the system provides detailed information about local NEFs to application function entities, then the application function can make better selection decisions, but the information exposure and processing overhead increase
Solution Approach 1:
The patent extracts and provides only the essential information needed for the application function entity to make informed selections about local network exposure function entities. The network function entity determines suitability based on multiple criteria including location information, and provides focused information about suitable NEFs without exposing all possible network details. This resolves the contradiction by providing sufficient information for accurate selection decisions while limiting information exposure to only what is necessary for the selection process.
Data Source
AI summary
Methods and apparatuses for edge services are disclosed. A network function entity receives from an application function entity a request relating to a data communication session, and can then determine, in response to the request, information of at least one local network exposure function entity for the application function entity. The application function entity is provided with the information of the at least one local network exposure function entity. The information can be used in connecting with a local network exposure function entity. The local network exposure function entity can then be used for the data communication session.