Wireless Node Association Using Signal-Strength Thresholds
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Solution Overview
Problem
The existing commissioning process for associating node devices in networks, such as lighting and sensing devices, is time-consuming and costly due to the need for specialized field engineers, especially in large deployments like parking lighting systems.
Innovation Solution
A method where node devices automatically associate based on signal strength thresholds, allowing devices to react to messages from other devices within a defined range, eliminating the need for manual commissioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual commissioning by field engineers is used to associate node devices, then the association reliability is ensured, but the time consumption and cost increase significantly
Solution Approach 1:
The patent implements self-service commissioning where node devices automatically associate with each other without requiring field engineers. Devices use their own resources (processors, communication modules, signal strength measurements) to perform association decisions autonomously, eliminating manual intervention while maintaining reliable associations through objective signal strength criteria
Solution Approach 2:
The patent replaces the mechanical/manual commissioning process with an automated electronic system. Instead of engineers physically configuring devices, the system uses electronic signal strength measurements and automated decision-making algorithms to establish associations, substituting human expertise with objective electronic criteria
2Measurement precision
If manual commissioning by field engineers is used to associate node devices, then the association accuracy is ensured, but the human resource cost increases
Solution Approach 1:
Node devices perform self-service association by automatically measuring signal strengths and making association decisions based on pre-configured criteria. This eliminates the need for expensive field engineer expertise while maintaining accurate associations through objective, repeatable measurement processes that any device can perform
Solution Approach 2:
The patent changes the association criterion from subjective engineer judgment to objective signal strength parameter measurement. By using quantifiable signal strength values and predefined thresholds, the system achieves consistent, accurate associations without requiring human expertise, thereby reducing deployment costs
3Productivity
If automated association based on signal strength is implemented, then the commissioning time is reduced, but the association reliability may be compromised
Solution Approach 1:
The patent implements feedback mechanisms where nodes continuously monitor signal strength and use this information to make association decisions. The system receives feedback from signal strength measurements and adjusts associations accordingly, ensuring that automated decisions are based on real-time, objective data that maintains reliability
Solution Approach 2:
The patent establishes reliable automated association by changing from subjective to objective parameter-based decision-making. Signal strength becomes the sole criterion for association, providing consistent, reproducible results that maintain reliability while dramatically improving commissioning efficiency through automation
4Reliability
If field engineers manually configure each device, then the network reliability is ensured, but the deployment time increases
Solution Approach 1:
The patent enables self-service deployment where nodes automatically configure and associate with each other without engineer intervention. Each device uses its own processing capabilities and communication modules to perform association decisions autonomously, reducing deployment duration from days to minutes while maintaining network reliability through objective criteria
Solution Approach 2:
The patent implements preliminary action by pre-configuring association criteria and signal strength thresholds in devices before deployment. This preparation allows nodes to make automated association decisions immediately upon installation, eliminating the need for post-installation configuration by engineers and dramatically reducing deployment duration
Data Source
AI summary
A method of associating a first type of node device and a second type of node device in a network is disclosed. The network comprises a plurality of first type of node devices and a plurality of second type of node devices operatively interconnected with each other, each first type of node device and each second type of node device comprise a wireless communication module. The method is performed by a first type of node device and comprising the steps of: receiving a first number of signals each having a signal strength level from a second type of node device; calculating a percentage of received signals with a signal strength level higher than a predetermined signal strength threshold; and associating the first type of node device with the second type of node device if the percentage is higher than a threshold percentage by configuring the first type of node device to react to messages from the second type of node device.