Communication Node Selection for Low-Power UWB Ranging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing ultra-wideband (UWB) localization systems face high power consumption and interference challenges, particularly in vehicle access systems, due to the use of multiple anchors and constant ranging sessions, which complicates power management and efficiency.
Innovation Solution
A communication system with a controller that selects a logical subset of communication nodes based on channel quality indicators, using low-power RF units to determine which nodes perform ranging sessions, reducing unnecessary activation and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple communication nodes perform ranging sessions simultaneously, then localization accuracy is improved, but power consumption increases
Solution Approach 1:
The system segments the set of communication nodes into a logical subset based on channel quality indicators. Instead of all nodes performing ranging sessions simultaneously, only the selected subset participates, dividing the workload while maintaining sufficient localization accuracy through strategic node selection.
Solution Approach 2:
The system evaluates and selects communication nodes based on their individual channel quality characteristics. Nodes with higher channel quality indicators are selected for ranging sessions, ensuring that only nodes contributing significantly to localization accuracy remain active, thereby reducing overall power consumption.
2Reliability
If all communication nodes are activated for ranging, then system reliability is improved, but device complexity increases
Solution Approach 1:
The system automatically evaluates channel quality indicators and selects appropriate nodes for ranging sessions without manual intervention. The controller autonomously manages node selection based on predefined criteria, reducing the complexity of manual activation management while maintaining system reliability.
Solution Approach 2:
The system continuously monitors channel quality indicators from communication nodes and uses this feedback to dynamically select nodes for ranging sessions. This feedback mechanism ensures reliable operation by adapting node selection to actual channel conditions, simplifying the management complexity through automated adaptive control.
Data Source
AI summary
In accordance with a first aspect of the present disclosure, a communication system is provided, comprising: a plurality of communication nodes which are operatively coupled to each other, wherein each of said communication nodes comprises a first radio frequency (RF) communication unit configured to perform ranging sessions with an external communication device; a controller configured to create a logical subset of said communication nodes based on an indication of a channel quality between the communication nodes and the external communication device, wherein said indication of the channel quality has been obtained using a second RF communication unit comprised in each of said communication nodes; the controller further being configured to cause that only the communication nodes included in said logical subset perform said ranging sessions with the external communication device.