RF Interface Frequency Selection for Interference Reduction
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Solution Overview
Problem
The existing technologies face interference issues due to the divide-by-four frequency and its multiplied frequency causing interference in radio frequency communication systems, particularly as the communications band widens.
Innovation Solution
An interference reduction method that determines a first operating frequency for an electronic device's interface, ensuring the current radio frequency communication frequency is in a non-frequency multiplication relationship with the divide-by-four frequency and its multiplied frequency, by selecting a preset frequency set that has no intersection with the current communication frequency, thereby avoiding interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the operating frequency of the first interface is set to a preset frequency, then the data transmission between internal components can be implemented, but the divide-by-four frequency and its multiplied frequency may fall within the communications band of the radio frequency system causing interference
Solution Approach 1:
The patent dynamically adjusts the operating frequency of the first interface by selecting from multiple preset frequency sets based on the current radio frequency communication frequency. When interference is detected (i.e., when divide-by-four frequency or its multiples fall within the RF communication band), the system switches to a different frequency set where this condition does not occur, thereby changing the frequency parameter to eliminate interference while maintaining data transmission functionality
2Adaptability or versatility
If the communications band of the radio frequency system becomes wider to support more functions, then the communication capability is improved, but it becomes more likely to cause interference with the divide-by-four frequency and its multiplied frequency
Solution Approach 1:
The patent implements a dynamic frequency selection mechanism where the operating frequency of the first interface is not fixed but is continuously adjusted based on the current RF communication frequency. The system monitors the RF band and dynamically switches between different preset frequency sets to avoid interference, making the frequency allocation adaptive rather than static. This allows the system to support wider communication bands without fixed interference patterns
3Device complexity
If the first interface operates at a fixed preset frequency, then the interface design is simplified, but it cannot adapt to avoid interference when the radio frequency communication frequency changes
Solution Approach 1:
The patent pre-calculates and stores multiple sets of preset frequencies during the design phase, where each frequency set is configured to avoid interference with specific RF communication frequencies. This preliminary preparation allows the system to quickly switch to a suitable frequency without complex real-time calculations, maintaining simplicity while ensuring reliable interference avoidance. The preset frequency sets are designed in advance to cover various RF communication scenarios
Data Source
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Figure 2b~3
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AI summary
The present invention provides an interference reduction method and apparatus. The method includes: obtaining a current communication frequency of a radio frequency system of an electronic device; and determining a first operating frequency of a first interface of the electronic device according to the current communication frequency, so that a current radio frequency communication frequency of a current serving cell of the radio frequency system is in a non-frequency multiplication relationship with a divide-by-four frequency of the first operating frequency and a multiplied frequency of the divide-by-four frequency.