UAV Control via Multi-Point Voice Channel Handover
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Solution Overview
Problem
Unmanned aerial vehicles (UAVs) cannot be seamlessly operated beyond the range of visibility of the user, as existing methods require disconnection and reconnection of wireless communication between the maneuver terminal and the UAV, disrupting continuous operation.
Innovation Solution
A control system utilizing a multi-point call function over a mobile communication network to establish and maintain voice channels between multiple wireless telephone terminals and a UAV, allowing seamless control signal transmission and user handover when radio wave strength decreases, enabling continuous operation without disconnection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wireless communication is disconnected and reconnected when moving beyond visibility range, then the maneuver terminal can be switched to another terminal, but continuous operation is interrupted
Solution Approach 1:
The patent establishes a multi-point voice channel that maintains continuous communication connectivity among multiple maneuver terminals and the wireless mobile object throughout the handover process. This allows the control system to switch between terminals without interrupting the useful action of controlling the mobile object, thereby maintaining operational continuity while enabling terminal switching capability
Solution Approach 2:
The patent introduces a multi-point voice channel as an intermediary communication medium that connects multiple maneuver terminals to the wireless mobile object simultaneously. This intermediary channel facilitates seamless handover by allowing multiple terminals to maintain active communication links, enabling smooth transition of control without direct disconnection and reconnection
2Adaptability or versatility
If manual disconnection and reconnection is performed, then control can be transferred to another terminal, but operational responsiveness decreases
Solution Approach 1:
The patent establishes multi-point voice channels in advance among all potential maneuver terminals and the wireless mobile object before handover is needed. This preliminary setup ensures that communication paths are pre-established and ready, allowing immediate control transfer when handover is triggered, thereby maintaining high operational responsiveness while enabling control transfer
3Device complexity
If a single wireless communication link is used, then the system is simple, but operation cannot continue beyond visibility range
Solution Approach 1:
The patent makes the voice channel communication system multi-functional by enabling it to serve multiple maneuver terminals simultaneously and to handle both control signal transmission and handover operations through the same communication infrastructure. This universal approach allows the system to extend operational range beyond single-terminal visibility while maintaining relatively simple system structure
Data Source
AI summary
A control system including: a first wireless telephone terminal; a second wireless telephone terminal; and a wireless mobile object. The first wireless telephone terminal includes a call placement/reception unit that establishes a voice channel over a mobile communication network with the second wireless telephone terminal and the wireless mobile object by using a multi-point call function of controlling a voice call among a plurality of points. A control unit controls the wireless mobile object by transmitting a control signal to the wireless mobile object through the voice channel, and transmits, to the second wireless telephone terminal through the voice channel, a change signal for changing a user who maneuvers the wireless mobile object when strength of radio waves from the wireless mobile object decreases to less than a threshold value.