Radio Interference Detection Through Current-Cell Frequency Scanning
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Solution Overview
Problem
Existing radio interference detection methods in vehicles consume excessive time, leading to delayed reporting of interference and compromised security in vehicle anti-theft systems.
Innovation Solution
Prioritize scanning of available frequencies using broadcast channel information to measure signal strength and noise ratio, reducing unnecessary frequency scanning and accelerating detection by focusing on the current cell's available frequencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If all frequencies in a corresponding network standard are scanned to determine radio interference, then measurement precision is improved, but detection time increases significantly
Solution Approach 1:
The patent segments the frequency scanning process into two parts: first scanning only the available frequencies of the current cell, and if no interference is detected, then scanning other frequencies. This segmentation reduces the initial scanning scope while maintaining comprehensive detection capability, thereby reducing detection time without sacrificing measurement precision.
Solution Approach 2:
The patent performs preliminary action by obtaining and scanning the available frequencies of the current cell before scanning other frequencies. This preliminary scanning of the most relevant frequencies allows for quick interference detection in the primary operating band, reducing the overall detection time while maintaining accuracy for the most critical frequencies.
2Reliability
If all frequencies are scanned to ensure comprehensive interference detection, then reliability is improved, but productivity decreases
Solution Approach 1:
The patent segments the detection process into a primary detection phase (scanning available frequencies of current cell) and a secondary detection phase (scanning other frequencies if needed). This segmentation improves productivity by focusing resources on the most relevant frequencies first, while maintaining reliability through the option to perform comprehensive scanning if interference is not detected in the primary phase.
Solution Approach 2:
The patent applies partial action by scanning only the necessary subset of frequencies (available frequencies of current cell) under normal conditions, rather than scanning all frequencies. This partial scanning approach maintains sufficient detection reliability for the primary operating band while significantly improving detection speed and productivity.
3Speed
If the scanning scope is reduced to only available frequencies of current cell, then detection speed is improved, but measurement precision may be compromised
Solution Approach 1:
The patent segments the frequency set into available frequencies of the current cell (primary scanning target) and other frequencies (secondary scanning target). This segmentation enables fast detection of interference in the primary operating band while preserving the capability to detect interference in other frequencies if needed, thus balancing detection speed and measurement precision.
Solution Approach 2:
The patent performs preliminary scanning of the available frequencies of the current cell, which are the most critical for operation. This preliminary action on the most important frequencies achieves high detection speed for the primary operating band while maintaining the option to perform additional scanning for comprehensive frequency coverage if interference is not detected initially.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances detection speed, allowing for rapid interference detection and reporting within approximately 1 second, thereby improving vehicle security and responsiveness of anti-theft systems.
Implementation Method 1
signal strength of the available frequency of the current cell is scanned preferentially to determine whether there is radio interference
Implementation Method 2
signal strength and noise ratio of received signals on the available frequency are measured
Data Source
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AI summary
This application relates to a radio interference detection method. The method includes: obtaining an available frequency configured for a current cell; measuring signal information of a signal received on the available frequency; and determining, based on the signal information of the signal, whether there is radio interference. The available frequency is obtained based on information about a broadcast channel, and signal strength of the available frequency of the current cell is preferentially scanned, to determine whether there is radio interference. If there is interference on the available frequency of the current cell, corresponding processing can be performed quickly. Because a relatively small quantity of frequencies are scanned preferentially, an effective interference detection speed can be increased quickly.