UAV Handover Signaling Using Cached Flight Path Indication
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Solution Overview
Problem
Network devices struggle to obtain the latest flight path of an unmanned aerial vehicle (UAV) after handover, leading to inefficient use of air interface resources, increased communication interference, and higher power consumption.
Innovation Solution
A communication method where a terminal device sends indication information about its flight path to a second network device only when specific conditions are met, ensuring timely acquisition of the flight path by the network device, thereby reducing redundant communications and resource waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the terminal device sends indication information about flight path to every network device during handover, then the network device can obtain the latest flight path, but air interface resources are wasted and communication interference increases
Solution Approach 1:
The patent applies preliminary action by having the terminal device send indication information about its flight path to the first network device before handover occurs. This allows the first network device to forward the flight path information to the second network device in advance, ensuring the target network device has the latest flight path information when handover completes, while avoiding repeated transmissions that would waste air interface resources
Solution Approach 2:
The patent uses the first network device as an intermediary to transfer flight path information to the second network device. Instead of the terminal device directly communicating with every network device it encounters, the current serving network device acts as a mediator that receives, stores, and forwards the flight path information, reducing communication overhead and air interface resource consumption
2Loss of information
If the terminal device frequently communicates flight path updates to network devices, then the network device obtains latest flight path, but power consumption of terminal device increases
Solution Approach 1:
The patent applies preliminary action by having the terminal device send indication information about its flight path to the first network device before handover occurs. This allows the flight path information to be cached and forwarded by the network device, eliminating the need for the terminal device to repeatedly transmit the same information to multiple network devices, thereby reducing power consumption
Solution Approach 2:
The network device serves itself by storing and forwarding the flight path information received from the terminal device. Once the terminal device sends the indication information to the current network device, that network device autonomously maintains and forwards the information to subsequent network devices during handover, freeing the terminal device from continuous transmission tasks and reducing its energy expenditure
Data Source
AI summary
A communication method and apparatus. After a terminal device receives a first message from a first network device, in response to a first condition being satisfied, a second message sent by the terminal device to a second network device includes indication information. The second network device obtains the indication information once instead of a plurality of times to avoid a problem such as a waste of air interface resources caused by occupation of a large quantity of air interface resources between the terminal device and the network device.