UWB TDOA Anchor Selection for Lower Synchronization Latency
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Solution Overview
Problem
Traditional methods for selecting a Global-anchor in UWB-based positioning networks are inefficient, especially when the cluster network expands or changes, necessitating a more effective anchor for time synchronization.
Innovation Solution
A method for selecting a new Global-anchor based on weighted-closeness centrality (CC) values and implementing a new round structure for information propagation within the cluster network, ensuring better time synchronization and reduced latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If traditional methods are used for selecting a Global-anchor in UWB-based positioning networks, then the system can maintain basic functionality, but the synchronization latency increases and scalability deteriorates when the cluster network expands or changes
Solution Approach 1:
The patent changes the selection parameter from traditional static criteria to dynamic weighted-closeness centrality values that adapt to network topology changes. This allows the system to automatically identify optimal Global-anchors based on real-time network conditions, reducing synchronization latency while maintaining scalability as the network expands
Solution Approach 2:
The patent implements a dynamic selection mechanism where the Global-anchor is not fixed but can be reselected based on changing network conditions and topology. The weighted-closeness centrality metric enables the system to adapt to network changes, allowing efficient scalability when clusters are added or removed from the positioning network
2Measurement precision
If a new round structure for information propagation is implemented, then the synchronization accuracy improves, but the system complexity increases
Solution Approach 1:
The patent segments the information propagation process into distinct rounds, where each round serves a specific purpose in the Global-anchor selection and synchronization process. This structured segmentation improves synchronization accuracy by ensuring proper information exchange while keeping the complexity manageable through clear phase separation
Data Source
AI summary
In some implementations, a current synchronization reference anchor for the group of RF positioning anchors may obtain metric information from each radio frequency (RF) positioning anchor of the group of RF positioning anchors. The current synchronization reference anchor may select the new synchronization reference anchor from the group of RF positioning anchors based at least in part on the metric information.