Flight Vehicle Cell Handover Using CoMP for Seamless Replacement
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Solution Overview
Problem
Existing stratospheric flight vehicles face significant challenges in seamless replacement, leading to temporary service interruptions and quality degradation when switching between vehicles, due to the large coverage area and the need for coordinated wireless communication services.
Innovation Solution
A control device that coordinates the movement and communication services of multiple flight vehicles using CoMP (Coordinated Multiple Point) transmission/reception, allowing seamless handover of wireless communication services by aligning the communication areas and cells of incoming and outgoing vehicles, thereby minimizing service interruptions and quality degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a single flight vehicle provides wireless communication service over a large coverage area, then the coverage area is sufficiently large to serve the ground area, but service interruptions and quality degradation occur during vehicle replacement
Solution Approach 1:
The coverage area is divided into multiple cells, each served by a different flight vehicle. This segmentation allows independent control and seamless handover between vehicles during replacement, maintaining service continuity while covering the entire large area.
Solution Approach 2:
Multiple flight vehicles are coordinated to work together as a unified communication system. During replacement, the incoming vehicle merges its communication service with the outgoing vehicle's service, ensuring continuous coverage without interruptions.
2Adaptability or versatility
If flight vehicles are replaced sequentially, then individual vehicle maintenance and updates are possible, but temporary service interruptions occur during the switching process
Solution Approach 1:
The incoming flight vehicle positions itself in advance at a location where it can immediately take over communication services. The control device pre-coordinates the handover process, ensuring that service transition occurs without interruptions or quality degradation.
Solution Approach 2:
The communication service is maintained continuously during vehicle replacement by having the incoming vehicle assume service provision before the outgoing vehicle fully departs. This overlapping period ensures no service gap occurs, maintaining continuous useful action throughout the replacement process.
3Reliability
If multiple flight vehicles are coordinated for seamless replacement, then service continuity is maintained, but control complexity increases
Solution Approach 1:
A central control device acts as an intermediary to coordinate between multiple flight vehicles. This mediator manages positioning, service handover, and communication coordination, simplifying the complexity by centralizing control functions rather than requiring direct peer-to-peer coordination between vehicles.
Data Source
AI summary
Provided is a control device that controls flight vehicles having an antenna for forming a cell on the ground to provide a wireless communication service to a user terminal in the cell. The control device includes a replacement control unit that controls replacement of a first flight vehicle covering an object area on the ground by means of a cell with a second flight vehicle. The replacement control unit controls the first flight vehicle and the second flight vehicle such that the second flight vehicle moves to a location corresponding to the location of the first flight vehicle, the second flight vehicle and the first flight vehicle start providing a wireless communication service to a user terminal by Coordinated Multiple Point transmission/reception (CoMP), and then the first flight vehicle stops forming its cell.