Wireless Network Controller RF Motion Detection Node Pair Selection
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Solution Overview
Problem
Radiofrequency-based motion detection in mesh networks is often inaccurate due to non-optimal node positioning, leading to unnecessary occupation of the wireless spectrum and increased processing power, as less relevant node pairs report permutations that are not crucial for motion detection.
Innovation Solution
A controller selects a reference node pair with suitable characteristics for motion detection and forms a subset of node pairs with matching characteristics to perform radiofrequency-based motion detection, thereby filtering out less relevant node pairs and optimizing bandwidth usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If all node pairs in the mesh network perform radiofrequency-based motion detection, then the coverage area is maximized, but the accuracy of motion detection deteriorates due to non-optimal node positioning
Solution Approach 1:
The patent segments the set of all node pairs into two distinct groups: a first set of node pairs positioned optimally for motion detection and a second set positioned non-optimally. This segmentation allows the system to selectively activate only the optimal node pairs for motion detection tasks, thereby maintaining high detection accuracy while preserving comprehensive coverage through the presence of all nodes in the network.
Solution Approach 2:
The patent applies local quality by assigning different functional roles to different node pairs based on their positioning characteristics. Node pairs in the first set are designated with high-quality motion detection capability due to their optimal positioning, while node pairs in the second set are excluded from motion detection. This localized optimization ensures that only the most suitable nodes contribute to motion detection accuracy.
2Reliability
If all node pairs report radiofrequency signals for motion detection, then comprehensive monitoring is achieved, but the radiofrequency spectrum becomes unnecessarily crowded with less relevant signals
Solution Approach 1:
The patent extracts and excludes node pairs from the second set (non-optimally positioned) from participating in radiofrequency-based motion detection. By removing these less relevant node pairs from the detection process, the system reduces the amount of radiofrequency traffic generated by suboptimal nodes, thereby decreasing spectrum congestion while maintaining reliable monitoring through the optimized first set of node pairs.
3Device complexity
If node pairs with non-optimal positioning are used for motion detection, then the network structure is simplified, but processing power is wasted on less relevant permutations
Solution Approach 1:
The patent segments the node pairs into two sets based on positioning quality, allowing the controller to selectively process only the first set for motion detection. This segmentation enables the system to maintain a simple overall network structure while efficiently utilizing processing power by excluding non-optimal node pairs from detection calculations, thereby reducing wasted computational resources.
4Adaptability or versatility
If nodes are positioned according to primary functions such as lighting requirements, then the system integration is improved, but motion detection accuracy deteriorates due to non-optimal positioning
Solution Approach 1:
The patent segments node pairs into two functional groups: those optimally positioned for motion detection and those positioned for primary functions like lighting. This segmentation allows nodes to fulfill multiple roles - nodes in the second set can be optimally positioned for lighting while being excluded from motion detection, whereas nodes in the first set are specifically utilized for motion detection. This approach enables improved system integration without compromising motion detection accuracy.
Data Source
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AI summary
The invention provides a controller, system, method, and computer program product for controlling a wireless network to perform radiofrequency-based motion detection. Thereto, the invention provides a controller for controlling a wireless network comprising a plurality of nodes to perform radiofrequency-based motion detection, wherein each unique pair of the plurality of nodes forms a respective node pair and collectively results in a plurality of node pairs, wherein the controller is configured to: select a reference node pair from the plurality of node pairs; obtain at least one reference characteristic of the reference node pair; select a subset of node pairs from the plurality of node pairs, wherein each respective node pair in the subset of node pairs comprises a respective characteristic matching the at least one reference characteristic; perform the radiofrequency-based motion detection with said subset of node pairs.