Subcarrier Blanking for Radio Jamming Detection in Resource Grids
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Solution Overview
Problem
Radio jamming by malicious devices poses a threat to communication systems, causing performance degradation and integrity issues, and existing detection methods struggle to distinguish this interference from legitimate cellular interference.
Innovation Solution
An apparatus determines subcarriers in a time-frequency resource grid to be blanked based on probability of detecting a jammer attack and channel quality, using methods such as pseudo-random selection and Key Performance Indicators (KPIs) to optimize subcarrier blanking, thereby enhancing jammer detection and minimizing resource waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If subcarrier blanking is performed to detect radio jamming, then jammer detection capability is improved, but system capacity and resource utilization deteriorate
Solution Approach 1:
The patent applies local quality by selectively blanking only specific subcarriers that are suspected of carrying jamming signals, rather than blanking all subcarriers. This is achieved by analyzing channel quality indicators and interference patterns to identify and blank only the problematic subcarriers, thereby maintaining detection capability while preserving system capacity on non-affected subcarriers.
Solution Approach 2:
The patent implements partial action by performing blanking on a subset of subcarriers rather than the entire frequency spectrum. The method determines a specific number and location of subcarriers to blank based on interference detection algorithms, applying the blanking action only where necessary to detect jamming while minimizing impact on overall system performance.
2Reliability
If more subcarriers are blanked to improve jammer detection, then detection probability increases, but channel quality and signal transmission deteriorate
Solution Approach 1:
The patent applies dynamics by making the blanking configuration adaptive rather than static. The system continuously monitors channel quality indicators and interference patterns, dynamically adjusting which subcarriers are blanked and how many subcarriers to blank. This allows the detection probability to be optimized while adapting to changing channel conditions to minimize impact on signal transmission quality.
Solution Approach 2:
The patent implements parameter changes by adjusting the number and location of blanked subcarriers based on detected interference characteristics. The method changes the blanking parameters (number of subcarriers, their positions in the frequency spectrum) according to the detected jamming pattern and channel conditions, optimizing the balance between detection probability and channel quality.
Data Source
AI summary
A solution for radio jamming detection is disclosed. The solution comprises determining M subcarriers in a time-frequency resource grid to be blanked and outputting the M subcarriers in the time-frequency resource grid to be blanked by performing at least one of the following operations: first determination of a number M of subcarriers in a time-frequency resource grid to be blanked based on probability of detecting a jammer attack or on channel quality of subcarriers in the time-frequency resource grid, second determination of which M subcarriers in the time-frequency resource grid are blanked taking into account the channel quality of subcarriers in the time-frequency resource grid.