UAV Non-C2 Data Detection via UPF Intermediary Filtering
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Solution Overview
Problem
Existing methods for managing abnormally behaving unmanned aerial vehicles (UAVs) struggle to effectively detect and process non-command and control (non-C2) data, leading to potential security threats and loss of control.
Innovation Solution
A processing method that involves a session management function (SMF) network element providing a rule to a user plane function (UPF) network element to detect non-C2 data packets between a UAV and its controller, with feedback reports enabling the SMF to send abnormal traffic reports to a supervision network element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UAV is directly disconnected from the UAVC to prevent non-C2 data transmission, then security is improved, but the UAV becomes out of control
Solution Approach 1:
The patent introduces a UPF network element as an intermediary that intercepts and inspects data packets between UAV and UAVC. The UPF detects non-C2 data and filters it before transmission, preventing security threats while maintaining the control connection intact. This mediator approach resolves the contradiction by providing security without sacrificing control.
Solution Approach 2:
The patent segments the data transmission path into controlled segments: C2 data passes through freely while non-C2 data is intercepted and blocked by the UPF. This segmentation allows selective filtering of data types, maintaining control connectivity while preventing unauthorized data transmission.
2Reliability
If the UAVC is switched to a UTM network element or another specified controller to control the UAV, then supervision is improved, but seamless switching between different controllers cannot be ensured
Solution Approach 1:
The UPF network element serves as a persistent intermediary that remains in the data path regardless of controller changes. It continuously monitors and filters non-C2 data without requiring controller switching, thereby maintaining supervision while avoiding the complexity of seamless switching between multiple controllers.
3Reliability
If all abnormality determination is centralized in the UTM to control the UAV, then centralized management is improved, but great management and control pressure is placed on the UTM
Solution Approach 1:
The patent segments the abnormality determination function between the UPF (which performs local packet inspection and detection) and the UTM (which receives reports and makes high-level decisions). This distribution reduces the management pressure on the UTM while maintaining centralized oversight through the report mechanism.
Solution Approach 2:
The UPF network element performs self-service by autonomously detecting non-C2 data packets and generating abnormality reports without requiring constant UTM intervention. This automated local detection reduces the operational burden on centralized UTM management.
4Measurement precision
If the UPF network element detects non-C2 data packets using the provided rule, then detection capability is improved, but the system complexity increases
Solution Approach 1:
The SMF provides detection rules to the UPF and receives feedback through session reports containing detection results. This feedback mechanism enables precise detection of non-C2 data while maintaining manageable system complexity through standardized reporting protocols and automated rule application.
Data Source
AI summary
This application discloses a processing method of an abnormally behaving unmanned aerial vehicle, a network element, a system, and a storage medium, to detect a data packet for transmitting non-command and control (non-C2) data. According to the method, an SMF network element provides a first rule for a UPF network element, where the first rule indicates the UPF network element to detect, from a target transmission data packet, the data packet for transmitting the non-C2 data, and the target transmission data packet is a data packet between the UAV and the UAVC; the SMF network element receives a first session report sent by the UPF network element; and the SMF network element sends an abnormal traffic report to the first network element based on the first session report.