Radio Signal Deviation Analysis for Passive Monitoring
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Solution Overview
Problem
Radio communication systems face challenges in analyzing network status due to spatial, temporal, and device-specific interference, leading to inaccurate predictions and limited monitoring capabilities, especially in uncoordinated frequency bands and dense wireless networks.
Innovation Solution
A preprocessing method is introduced to correct deviations in radio signals received by passive nodes, generating an improved evaluation basis by comparing them to actual receiver signals, allowing for more accurate analysis and evaluation of communication quality despite interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If external monitoring systems are used to monitor radio communication systems, then monitoring capabilities are improved, but the monitoring systems introduce differences in reception and interference conditions that can distort analysis results
Solution Approach 1:
The patent uses the transmitting node itself as an intermediary to capture and forward a copy of the transmitted signal to the monitoring node. This mediator approach allows the monitoring system to obtain signal data without being a separate external receiver that would introduce different reception conditions. The transmitting node acts as a bridge between the actual communication link and the monitoring system, ensuring the monitoring node receives identical signal copies without introducing external interference variables.
Solution Approach 2:
The patent implements a copying mechanism where the transmitting node creates a duplicate copy of the transmitted signal and sends it to the monitoring node. Instead of having the monitoring node independently receive signals from distant transmitters (which would subject it to different spatial and temporal interference conditions), the system copies the exact signal data from the transmitting node's perspective and forwards it to the monitoring node for analysis.
2Device complexity
If passive nodes are used for monitoring, then hardware resource requirements are reduced, but the ability to independently identify interference causes and initiate corrective actions is limited
Solution Approach 1:
The patent implements a feedback mechanism where the monitoring node analyzes signal quality metrics (such as packet error rates, signal strength variations, and interference patterns) and sends feedback information back to the transmitting node. The transmitting node can then automatically adjust transmission parameters like power levels, modulation schemes, or coding rates based on this feedback, enabling autonomous corrective actions without requiring complex hardware at the monitoring node.
Solution Approach 2:
The transmitting node performs self-diagnosis and self-correction by receiving monitoring data and autonomously adjusting its transmission parameters. Instead of requiring the monitoring node to have complex hardware for independent interference identification and correction, the system enables the transmitting node to serve itself by using the monitoring information to automatically optimize its own operation.
3Area of stationary object
If multiple monitoring nodes are deployed for better coverage, then spatial coverage is improved, but system complexity and coordination requirements increase
Solution Approach 1:
The patent makes the transmitting node universal by giving it dual functionality: it serves both as a communication node and as a signal source for monitoring. Each transmitting node can act as a monitoring point for its own transmissions and potentially for nearby communications, eliminating the need for dedicated monitoring infrastructure. This multi-functionality allows multiple transmission points to collectively provide comprehensive monitoring coverage without requiring separate monitoring nodes.
Solution Approach 2:
Each transmitting node creates and distributes copies of its transmitted signals to monitoring nodes, and can also receive and analyze copies of signals from other transmitting nodes. This copying approach allows the system to achieve multi-point monitoring coverage using the existing transmitting nodes themselves, rather than deploying additional dedicated monitoring infrastructure that would increase system complexity.
Data Source
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AI summary
A method is described for generating a signal for analyzing a communication network based on a first version of a radio signal transmitted from a first node of the radio communication system to a second node of the radio communication system, received at a passive node, by detecting deviations of the first version of the transmitted radio signal from a second version of the radio signal received at the second node, and generating the signal based on the deviations.