Wireless Radio Frequency Exclusion for Interference Mitigation
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Solution Overview
Problem
Concurrent use of multiple wireless radios in devices, such as Wi-Fi and Bluetooth, often results in interference that degrades signal quality, limiting the effective use of one or both communication protocols due to overlapping frequency ranges.
Innovation Solution
The system configures the frequencies used by a first wireless radio based on interference caused by a second wireless radio by determining baseline signal quality values and adjusting power levels or antenna usage to minimize interference, allowing both radios to operate concurrently without significant degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If both wireless radios are used concurrently, then communication versatility is improved, but signal quality deteriorates due to interference
Solution Approach 1:
The patent segments the frequency spectrum into multiple channels and further divides each channel into subcarriers. By identifying specific interfering frequencies between Wi-Fi and Bluetooth radios, the system selectively excludes only the affected subcarriers from use, allowing non-interfering frequencies to continue operating. This granular segmentation enables concurrent operation of both radios while maintaining signal quality on unaffected frequencies.
2Reliability
If frequency ranges are adjusted to avoid interference, then signal quality is improved, but communication bandwidth is reduced
Solution Approach 1:
The patent applies local quality by treating different frequency subcarriers differently based on their interference characteristics. Instead of uniformly restricting entire frequency bands, the system identifies specific subcarriers that experience interference and excludes only those local portions. This allows the majority of the bandwidth to remain available for communication while locally adjusting quality parameters in affected frequency regions.
3Reliability
If power levels are reduced to minimize interference, then signal quality of the affected radio is improved, but transmission power is reduced
Solution Approach 1:
The patent implements dynamic power adjustment where the system continuously monitors for interference between wireless radios and adapts power levels in real-time. When interference is detected on specific frequencies, the system dynamically reduces power for the interfering radio on those specific frequencies while maintaining full power on non-interfering frequencies. This dynamic approach ensures minimal impact on overall transmission capability while protecting signal quality where needed.
Data Source
AI summary
Described are techniques for reducing the effects of interference from one wireless radio on the operations of another wireless radio. A first wireless radio and a second wireless radio may transmit signals within frequency ranges that at least partially overlap. Signal quality values for the first wireless radio, at a time that the second wireless radio is transmitting signals, may be determined for at least a portion of the overlapping frequencies. For each frequency at which the determined signal quality value deviates from a threshold value, that frequency may be excluded from use for subsequent communications by the first wireless radio. Excluding certain frequencies from use may enable continuous use of the first wireless radio without experiencing the effects of interference from the second wireless radio.