NWDAF Service Selection with NRF-Based Analytics Discovery
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The increasing complexity and diversity of wireless communication systems, particularly in 5G networks, require efficient methods to manage wireless resources and devices to reduce costs and minimize interference, especially with the integration of IoT technologies and varying UE types.
Innovation Solution
The implementation of a network data analytics function (NWDAF) that selects and optimizes network analytics information by discovering and utilizing appropriate NWDAF instances based on purpose and network situation, incorporating machine learning and data collection to provide accurate analytics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple NWDAF instances are deployed to handle diverse service requirements, then service coverage and adaptability are improved, but device complexity and management overhead increase
Solution Approach 1:
The NRF (Network Repository Function) serves as an intermediary between service requiring entities and multiple NWDAF instances. It maintains a registry of available NWDAF instances and their capabilities, enabling automatic discovery and selection without direct complex management between clients and multiple NWDAFs, thus resolving the contradiction between service coverage and management overhead
Solution Approach 2:
The system segments NWDAF functionality into multiple specialized instances, each handling specific service types or network conditions. This segmentation allows diverse service requirements to be met while each instance remains relatively simple to manage, reducing overall system complexity while improving adaptability
2Measurement precision
If comprehensive network analytics data is collected and processed, then measurement precision and service quality are improved, but use of energy and processing resources increase
Solution Approach 1:
The system collects and processes only the necessary subset of network analytics data required for specific service requirements rather than all available data. The NWDAF instances selectively process data based on service type and current network conditions, achieving sufficient analytics accuracy while reducing energy and processing resource consumption
Solution Approach 2:
Different NWDAF instances are deployed with specialized data collection and processing capabilities tailored to specific service types or network conditions. Each instance processes data locally relevant to its function, improving analytics precision for specific domains while avoiding the energy cost of universal comprehensive processing
3Speed
If advanced 5G techniques such as beamforming and massive MIMO are implemented, then data rates and transmission range are improved, but device complexity and interference management difficulty increase
Solution Approach 1:
The system segments the complex 5G network into multiple specialized NWDAF instances, each responsible for specific analytics functions related to beamforming, MIMO, or other advanced techniques. This segmentation manages system complexity by distributing specialized processing across multiple simpler components rather than requiring one complex centralized system
Solution Approach 2:
The NRF acts as an intermediary that manages the complexity of coordinating multiple advanced 5G techniques. It maintains information about which NWDAF instances handle which advanced techniques and routes requests appropriately, reducing the management burden on individual components while maintaining high data rates
Data Source
AI summary
For selecting a service in a wireless communication system, a network data analytics function (NWDAF) receives, from a network function (NF), a request message for analytics information. Based on the request message, the NWDAF transmits, to a network repository function (NRF), a discovery message for discovering at least another NWDAF. A response message relating to the discovery message is received by the NWDAF from the NRF, where the response message includes information about the at least another NWDAF. Based on the information, a request message for processing the analytics information is transmitted by the NWDAF to the other NWDAF.