Wireless Sensing Threshold Control for Overhead Reduction
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Solution Overview
Problem
Wireless sensing technologies face inefficiencies due to high overhead signaling in radio resource usage, particularly when a large number of sensing receivers are required to detect movements, which can hinder data communication capacity and increase power consumption.
Innovation Solution
A method involving a sensing coordination device that determines and applies threshold values to control the operation of wireless sensing devices, deciding whether to transmit reports based on differences in channel estimates, and dynamically adjusts these thresholds to optimize radio resource usage and reduce redundant measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large number of sensing receivers are deployed to detect movements in all desired locations, then sensing coverage and detection capability are improved, but radio resource overhead and signaling burden increase significantly
Solution Approach 1:
The patent combines sensing measurement reports from multiple sensing receivers into aggregated reports. Instead of each receiver transmitting individual reports, the system merges measurements from multiple receivers to create consolidated sensing information, reducing the total number of transmissions and radio resource overhead while maintaining comprehensive sensing coverage.
Solution Approach 2:
The sensing coordination device performs multiple functions: it coordinates sensing operations across multiple receivers, aggregates measurements from different sources, determines threshold values for report transmission, and manages radio resource allocation. This multi-functional approach consolidates control and reduces overall system overhead.
2Measurement precision
If sensing reports are transmitted frequently to maintain accurate movement detection, then measurement precision and response time are improved, but power consumption and radio resource usage increase
Solution Approach 1:
The patent implements dynamic threshold values for report transmission decisions. The threshold for triggering a sensing report is not fixed but adapts based on current conditions such as the number of active sensing receivers and observed channel variations. This dynamic approach allows the system to maintain measurement precision when needed while reducing power consumption during stable conditions by suppressing unnecessary report transmissions.
Solution Approach 2:
The system changes the parameter of report transmission frequency based on measured channel conditions and movement activity. When channel variations exceed the dynamic threshold, reports are transmitted to maintain precision; when variations remain below the threshold, transmissions are suppressed to conserve power. This parameter adaptation resolves the contradiction between precision and power usage.
3Measurement precision
If threshold values are set low to detect subtle channel variations, then measurement sensitivity is improved, but the number of false alarms and redundant report transmissions increases
Solution Approach 1:
The sensing coordination device receives feedback from multiple sensing receivers about channel conditions and uses this feedback to adjust the dynamic threshold values. When many receivers report similar small variations, the system learns these are likely noise rather than significant events, and adjusts thresholds upward to reduce false alarms. This feedback mechanism maintains sensitivity to real events while filtering out redundant signaling from normal channel fluctuations.
Data Source
AI summary
A method is disclosed for a sensing coordination device associated with one or more wireless sensing devices comprising a first wireless sensing device. The method comprises determining a threshold value for the first wireless sensing device, wherein the threshold value is for comparison with a difference between channel estimates of wireless sensing measurements of the first wireless sensing device, and causing application of the threshold value in control of operation of the first wireless sensing device for performing wireless sensing measurements. A method for the first wireless sensing device is also disclosed. The method comprises acquiring the threshold value, and operating the first wireless sensing device based on the threshold value, wherein operating the first wireless sensing device based on the threshold value may comprise refraining from transmitting a report of the wireless sensing measurements when the difference between channel estimates of the wireless sensing measurements is less than the threshold value. Corresponding apparatuses, devices and computer program product are also disclosed.