RF Sensing Node Clustering to Reduce Network Flooding
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Solution Overview
Problem
Existing radio frequency (RF) sensing systems face issues of network flooding and excessive resource consumption due to the indiscriminate selection of all nodes, leading to inefficient power usage and network communication overload.
Innovation Solution
A method of clustering RF nodes based on proximity and suitability for RF sensing, selecting subsets of nodes to act as transmitters or receivers, optimizing node selection to minimize network traffic and improve overall performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If all nodes are selected to participate in RF sensing, then sensing coverage is improved, but network traffic increases causing network flooding
Solution Approach 1:
The patent divides the set of all nodes into multiple clusters based on proximity. Each cluster is independently managed with a cluster head that coordinates sensing activities. This segmentation reduces the number of nodes actively transmitting RF signals simultaneously, thereby reducing network traffic while maintaining comprehensive sensing coverage through the distributed cluster structure.
Solution Approach 2:
Instead of having all nodes participate in RF sensing, the patent selects only a subset of nodes (those with determined suitability) to actively transmit and receive RF signals. This partial action approach maintains adequate sensing coverage by strategically selecting nodes while significantly reducing the overall network traffic and avoiding network flooding.
2Area of stationary object
If all nodes are selected to participate in RF sensing, then sensing coverage is improved, but power consumption increases
Solution Approach 1:
By segmenting nodes into clusters and selecting only suitable nodes within each cluster for active sensing participation, the patent reduces the total number of nodes consuming power for RF transmission and reception. This maintains sensing coverage through strategic node distribution while significantly reducing overall power consumption in the network.
Solution Approach 2:
The patent implements partial participation in RF sensing by determining suitability metrics for each node and selecting only those nodes that meet the criteria. This ensures adequate sensing coverage is achieved with a reduced subset of active nodes, thereby minimizing power consumption while maintaining system effectiveness.
3Area of stationary object
If all nodes are selected to participate in RF sensing, then sensing coverage is improved, but resource utilization increases leading to inefficiency
Solution Approach 1:
The patent segments the node population into clusters and further identifies suitable nodes within each cluster for active sensing participation. This hierarchical segmentation allows efficient resource utilization by assigning active sensing roles only to capable nodes while maintaining comprehensive coverage through the distributed cluster architecture.
Solution Approach 2:
By selecting only a subset of nodes with determined suitability for active RF sensing participation, the patent achieves efficient resource utilization. The partial participation approach ensures that limited network resources are concentrated on nodes that can effectively contribute to sensing, improving overall productivity while maintaining adequate coverage.
Data Source
AI summary
A method of configuring a radio frequency, RF, based sensing system, wherein the RF sensing system comprises a plurality of nodes comprising a transmitter and/or a receiver arranged for transmitting and/or receiving radio frequency, RF, signals for sensing an object in an environment, wherein the method comprises clustering the plurality of nodes in two or more clusters based on the proximity of the plurality of nodes, determining a suitability of the plurality of nodes in each of the two or more clusters for transmitting and/or receiving the RF signals for RF sensing, selecting one or more nodes from each of the two or more clusters to act as a transmitter and/or a receiver for RF sensing system based on the determined suitability, instructing the selected one or more nodes to act as a transmitter and/or a receiver for the RF sensing system.