UAV Flight Mode Signaling for Adaptive Cellular Handover Control
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Solution Overview
Problem
Existing systems lack flexibility in controlling unmanned aerial vehicles (UAVs) via cellular networks, particularly when transitioning between fixed and dynamic flight modes, which affects cell handover processes.
Innovation Solution
UAVs send mode switching information to a base station after changing flight modes, allowing the base station to adjust control strategies accordingly, enabling flexible control based on the new flight mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the base station uses a unified control strategy for all flight modes, then the system is simple to operate, but the control flexibility is insufficient when UAVs switch between fixed and variable flight paths
Solution Approach 1:
The patent implements dynamic control strategies that adapt to different flight modes. The base station receives flight mode information from the UAV and switches between different control strategies: for fixed flight paths, the base station uses predetermined handover strategies, while for variable flight paths, it employs real-time measurement and dynamic handover decisions. This dynamic adaptation resolves the contradiction by making the control system flexible without requiring complete redesign for each scenario.
Solution Approach 2:
The patent changes control parameters based on flight mode. When the UAV switches from fixed to variable flight path mode, the base station modifies key parameters such as handover thresholds, measurement frequencies, and cell reselection criteria. This parameter-based adaptation allows the system to maintain simplicity while achieving the needed flexibility for different operational scenarios.
2Ease of operation
If the base station implements mode-specific control strategies, then the control flexibility improves, but the system complexity increases
Solution Approach 1:
The patent segments the control strategy into distinct modules for different flight modes. The base station maintains separate but standardized control procedures for fixed flight paths and variable flight paths, selecting the appropriate segment based on UAV-reported flight mode. This segmentation reduces overall complexity by avoiding the need for a single complex universal strategy while still providing mode-specific optimization.
Solution Approach 2:
The patent creates a universal control framework that handles both flight modes through a common interface and message structure. The base station uses a unified information exchange protocol and common handover management procedures that adapt to different modes, reducing operational complexity while maintaining flexibility. The same basic control architecture serves multiple functions across different flight scenarios.
3Measurement precision
If the UAV continuously reports position information, then the base station can improve handover accuracy, but the information transmission overhead increases
Solution Approach 1:
The patent implements periodic position reporting based on flight mode and handover likelihood. Instead of continuous reporting, the UAV transmits position information at regular intervals or when specific triggers are met (e.g., approaching cell boundaries, mode changes). This periodic action maintains sufficient measurement precision for handover decisions while significantly reducing communication overhead compared to continuous transmission.
Solution Approach 2:
The patent uses preliminary position information and flight path predictions to pre-prepare handover strategies. The base station receives advance position data and flight mode information to proactively configure handover parameters and prepare target cell resources before actual handover is needed. This preliminary action improves handover accuracy while reducing the need for frequent real-time position updates during critical handover moments.
Data Source
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AI summary
The present disclosure provides an information transmission method, device, system, and storage medium, and relates to the technical field of wireless communication. The method includes: sending by an unmanned aerial vehicle mode switching information to a base station, after the flight mode is switched from a first flight mode to a second flight mode; and receiving by a base station the mode switching information sent by the unmanned aerial vehicle, wherein the mode switching information is configured to indicate that the flight mode of the unmanned aerial vehicle has been switched from the first flight mode to the second flight mode. According to the technical approach provided by the present disclosure, the unmanned aerial vehicle sends the mode switching information to the base station, after the flight mode is switched from the first flight mode to the second flight mode, so as to report, via the mode switching information, to the base station that the flight mode of the unmanned aerial vehicle has been switched from the first flight mode to the second flight mode. Thus, the base station can control the unmanned aerial vehicle according to the switched flight mode after the flight mode of the unmanned aerial vehicle is switched, so that flexibility can be improved in control of the unmanned aerial vehicle.