System, network, method and computer program for controlling a re-baselining of a network device being part of the network
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Solution Overview
Problem
The accuracy of detecting presence or absence of subjects in smart home applications using wireless signals is compromised by the quality of baseline signals, which can be affected by environmental changes, leading to inconsistent detection results.
Innovation Solution
A re-baselining control system that determines a new baseline based on detection signals from network devices, using a detection signal providing unit, quality criterion checking unit, and re-baselining unit to ensure high-quality baseline determination by checking and fulfilling predetermined quality criteria before re-baselining, thereby maintaining consistent detection accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If re-baselining is performed frequently to adapt to environmental changes, then adaptability improves, but detection accuracy deteriorates due to baseline quality degradation
Solution Approach 1:
The system performs preliminary checks of quality criteria before executing re-baselining. The quality criterion checking unit evaluates whether detected subjects and environmental conditions meet predefined thresholds before baseline update is initiated, ensuring that re-baselining only occurs when conditions are favorable for maintaining detection accuracy
Solution Approach 2:
The system implements feedback mechanisms where detection results and environmental conditions are continuously monitored and fed back to the quality criterion checking unit. This feedback loop allows the system to adaptively adjust re-baselining timing based on actual detection quality and environmental stability, balancing adaptability with measurement precision
2Measurement precision
If re-baselining is performed to maintain detection accuracy, then measurement precision improves, but system complexity increases due to quality criterion checking
Solution Approach 1:
The system manages complexity by parameterizing quality criteria with configurable thresholds and conditions. Instead of complex algorithms, the quality criterion checking unit uses simplified parameter comparisons against predefined thresholds, making the system easier to implement and maintain while still ensuring detection accuracy
Solution Approach 2:
The re-baselining control system is segmented into distinct functional units: detection signal providing unit, quality criterion checking unit, and re-baselining unit. This modular segmentation isolates the complexity of quality checking from the baseline determination process, making each unit independently manageable and reducing overall system complexity
3Adaptability or versatility
If baseline is updated continuously to reflect environmental changes, then adaptability improves, but reliability deteriorates due to poor quality baselines
Solution Approach 1:
The quality criterion checking unit performs preliminary evaluation of environmental conditions and detected subjects before allowing baseline updates. By checking quality criteria in advance, the system ensures that only high-quality detection data is used for baseline determination, preventing degradation of baseline reliability
Solution Approach 2:
The system converts the potential harm of environmental changes and detected subjects into beneficial information by using them as quality criteria for baseline validation. Instead of treating detected subjects as interference to be eliminated, the system uses their presence/absence patterns as valuable data for assessing baseline quality and determining appropriate re-baselining timing
Data Source
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AI summary
The invention refers to a system that allows to improve a detection accuracy in network RF sensing. A system (150) for controlling a re-baselining of a network device (110) is presented, wherein a new baseline is determined based on a detection signal detected by the network device and/or detected by other network devices (130, 120), wherein the system comprises a detection signal providing unit (151) for providing a detection signal detected by the network device and/or by other network devices in the detection area, a quality criterion checking unit (152) for checking if a predetermined quality criterion for a re-baselining is fulfilled based on the provided detection signal, and a re-baselining unit (156) for controlling the network device to re-baseline if the predetermined quality criterion is fulfilled. Thus, the long term detection accuracy in detecting the presence or absence of a subject in the detection area can be improved.