NWDAF Application Detection via NEF Validation
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Solution Overview
Problem
Current wireless communication systems lack the capability to effectively analyze and detect the applications used by User Equipment (UE) within the network, which is essential for providing differential charging and service quality management.
Innovation Solution
A method and device utilizing a Network Data Collection and Analysis Function (NWDAF) that collects and analyzes data from network entities, including a network exposure function (NEF), to detect the type of application used by a UE by validating and updating packet flow detection information, enabling accurate application detection and control of signal flows.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If network data collection and analysis functions are implemented to detect application types, then application detection precision is improved, but device complexity increases
Solution Approach 1:
The system is divided into distinct functional modules: NWDAF for data collection and analysis, NEF for exposure and validation, and packet flow detection components. Each module performs a specific function in the application detection process, reducing overall system complexity while maintaining detection precision.
Solution Approach 2:
The NEF acts as an intermediary between the NWDAF and other network functions. It validates PFD information and manages the complexity of data collection by providing a standardized interface, thereby simplifying the overall system architecture while enabling precise application detection.
2Measurement precision
If packet flow detection information is continuously validated and updated, then application detection accuracy is improved, but loss of time increases
Solution Approach 1:
The NWDAF implements a feedback mechanism where PFD information is continuously validated and updated based on analyzed network data. This feedback loop ensures detection accuracy is maintained and improved over time while allowing the system to adapt to changing application behaviors and network conditions.
Solution Approach 2:
The system performs preliminary validation and updating of PFD information by the NEF before full detection operations. This preliminary action prepares the detection mechanisms in advance, reducing the time required during actual application detection while maintaining high accuracy.
Data Source
AI summary
The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Disclosed is a method and device for controlling a wireless communication system to detect information about an application in use by analyzing data from a user terminal. A method performed by an NWDAF includes receiving, from an NEF, a first message including a terminal ID to request analysis information on a validity of PFD information; transmitting, to the NEF, a second message as a response to the first message; transmitting, to the NEF, a third message including the terminal ID to request the PFD information; and receiving, from the NEF, a fourth message including the terminal ID and PDR information as a response to the third message.