Synchronized Terminal Positioning for Accurate Distance Calculation
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Solution Overview
Problem
Existing methods for positioning mobile terminal devices result in low accuracy when calculating distances between them due to their movement, especially in scenarios involving uncrewed aerial vehicles (UAVs) and their controllers (UAVCs).
Innovation Solution
A method and apparatus that obtain the locations of a first and second terminal device at the same time point to enhance the accuracy of calculating the distance between them by requesting and receiving their locations from a network, adjusting time points for positioning if necessary, and using network devices like GMLC, NEF, AMF, or LMF to facilitate this process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If locations of mobile terminal devices are obtained at different time points, then the positioning process is simpler and requires less coordination, but the accuracy of calculating distance between devices deteriorates
Solution Approach 1:
The network device performs preliminary actions by requesting and obtaining locations of multiple terminal devices at the same time point before distance calculation is needed. This advance preparation ensures that the location data is ready for accurate distance computation without requiring complex real-time coordination during the actual measurement process.
Solution Approach 2:
The network device acts as an intermediary that coordinates and manages the location obtaining process. It requests locations from the network, receives them at the same time point, and then uses these locations for accurate distance calculation between terminal devices, thereby mediating between the terminal devices to achieve simultaneous positioning.
2Measurement precision
If locations of terminal devices are obtained at the same time point, then the accuracy of distance calculation is improved, but the time required for location obtaining increases
Solution Approach 1:
The network device performs the location obtaining operation in advance as a preliminary action. By requesting and receiving locations at the same time point before the actual distance calculation is needed, the system prepares accurate location data ahead of time, ensuring that when distance calculation is required, the data is already ready for immediate use.
3Measurement precision
If multiple terminal devices are positioned simultaneously, then the accuracy of relative position measurement is improved, but the network overhead and coordination complexity increase
Solution Approach 1:
The network device merges the location obtaining operations for multiple terminal devices into a single coordinated process. By requesting and receiving locations of multiple devices at the same time point through a unified approach, the system achieves accurate relative position measurement while minimizing redundant network communications and reducing overall overhead.
Data Source
AI summary
A location obtaining method includes requesting, from a network, to obtain locations of a first terminal device and a second terminal device at a same time point, and receiving the locations that are fed back by the network and that are of the first terminal device and the second terminal device at the same time point. The locations of the first terminal device and the second terminal device at the same time point are obtained.