UAV Recognition in Cellular Handover Signaling
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Solution Overview
Problem
Current cellular network technologies fail to recognize Unmanned Aerial Vehicles (UAVs) during handover processes, leading to inadequate service provisioning that meets UAV requirements.
Innovation Solution
A method and apparatus for recognizing UAVs involve determining a target base station and handover mode based on measurement reports from user equipment (UE), and sending signaling with indication information to the target base station or Mobility Management Entity (MME) to ensure proper service configuration for UAVs during handovers, utilizing X2 or S1 interfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional handover signaling is used without UAV-specific indication, then the handover process is simple and fast, but the target base station cannot recognize the UE as a UAV and provide appropriate service configuration
Solution Approach 1:
The patent extracts the UAV identification function from the general handover signaling by introducing a separate indication field (e.g., UAV indication bit or specific information element) within the handover request message. This allows the target base station to recognize UAVs without fundamentally changing the handover signaling structure, thus improving service provisioning accuracy while minimizing signaling complexity increase
Solution Approach 2:
The patent modifies existing handover signaling parameters by adding or reusing indication bits/fields to carry UAV identification information. For example, it may define a new information element such as 'UAV Indication' or modify existing capability indicators to include UAV-specific flags, enabling the target base station to identify and appropriately configure services for UAVs without requiring complete signaling redesign
2Reliability
If UAV recognition and service configuration are added to the handover process, then service quality for UAVs is improved, but the handover processing time and complexity increase
Solution Approach 1:
The patent implements preliminary UAV recognition by including UAV indication information in the handover request message sent from the source base station to the target base station. This allows the target base station to prepare appropriate service configurations in advance during the handover preparation phase, ensuring continuous and accurate service provisioning for UAVs without adding significant processing delays during the actual handover execution
Solution Approach 2:
The patent uses the handover signaling messages (such as Handover Request and Handover Request Acknowledge) as intermediaries to transmit UAV identification information between base stations. By embedding UAV indication fields within these existing signaling structures, the system enables UAV recognition and service configuration without requiring separate communication channels or additional processing steps that would increase handover time
Data Source
AI summary
A method for recognizing an unmanned aerial vehicle, applied to a source base station, includes: determining a target base station to which user equipment (UE) is to be handed over and a handover mode of the UE based on a measurement report reported by the UE; determining second signaling based on first signaling corresponding to the handover mode, the first signaling being signaling for requesting handover sent by the source base station, and the second signaling including indication information indicating that the UE requesting handover is a UAV; and sending the second signaling.