UAV Handover via Pre-Prepared Access Resources
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Uncrewed aerial vehicles (UAVs) experience high failure rates and call drop rates during cell handover due to poor air coverage performance, disrupting service continuity and performance.
Innovation Solution
An uncrewed aerial vehicle communication method where an access network device receives indication information about the next hop cell from a mobility management network element, allowing it to request the next access network device to prepare resources in advance, thereby reducing handover delays and improving handover success rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the access network device waits until the UAV is handed over to a new cell to prepare access resources, then the resource preparation process is simple, but the handover delay increases and handover success rate decreases
Solution Approach 1:
The access network device receives indication information about the next hop cell in advance and prepares access resources before the actual handover occurs. This preliminary action eliminates the handover delay and ensures resources are ready when needed, directly resolving the contradiction between handover speed and resource preparation timing.
2Loss of time
If the access network device prepares access resources in advance for the next hop cell, then the handover delay is reduced, but the complexity of the resource preparation process increases
Solution Approach 1:
The access and mobility management network element acts as an intermediary that provides indication information to the access network device about the next hop cell. This intermediary mechanism simplifies the overall process by centralizing the decision-making logic while enabling the access network device to prepare resources efficiently without complex local calculations.
3Stability of the object's composition
If the access network device notifies the next access network device in advance to prepare resources, then service continuity is maintained, but the signaling overhead increases
Solution Approach 1:
The handover indication information is extracted and sent separately to the access and mobility management network element, which then forwards it to the appropriate access network device. This extraction approach allows for targeted signaling only when handover is needed, reducing unnecessary signaling overhead while maintaining service continuity.
Data Source
AI summary
Example uncrewed aerial vehicle communication methods and apparatus are described. One example method includes a first access network device receives indication information used to indicate access information of a next hop of the uncrewed aerial vehicle, where the access information includes at least one of information about a second access network device or information about a cell of a second access network device. The first access network device sends a first request based on the indication information, where the first request is used to request the second access network device to prepare an access resource for the uncrewed aerial vehicle. The second access network device prepares the access resource for the uncrewed aerial vehicle after receiving the first request.