Access Point Interference Detection for Accurate Channel Selection
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Solution Overview
Problem
Existing wireless networks struggle with accurately distinguishing between in-network and foreign interference, leading to suboptimal channel selection that can exacerbate interference issues due to 'friendly fire' within the network.
Innovation Solution
Implementing techniques to differentiate between in-network and foreign interference by determining the amount of in-network interference and accounting for it when evaluating channel changes, allowing for more accurate interference measurement and selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the access point measures total interference without distinguishing in-network interference, then the measurement is simple, but the channel selection accuracy deteriorates due to false interference detection
Solution Approach 1:
The patent segments total interference into two distinct components: in-network interference (from non-associated client devices) and foreign interference (from external sources). By separating these interference sources and measuring them independently, the system achieves accurate interference measurement without misclassifying in-network traffic as harmful interference, thereby resolving the contradiction between measurement precision and device complexity.
2Reliability
If the access point switches channels based on total interference without accounting for in-network interference, then the response to foreign interference is fast, but unnecessary channel switches increase due to friendly fire
Solution Approach 1:
The patent extracts in-network interference from the total interference measurement by separately identifying and quantifying interference from non-associated client devices. This extracted in-network interference information is then used to adjust channel selection decisions, preventing unnecessary channel switches triggered by false detection of friendly fire while maintaining fast response to actual foreign interference, thus improving channel selection reliability and reducing unnecessary channel switches.
3Productivity
If the access point treats all interference equally without differentiation, then the system operation is simple, but network performance deteriorates due to suboptimal channel selection
Solution Approach 1:
The patent applies local quality by treating different interference sources differently: in-network interference from non-associated client devices is identified and excluded from channel selection considerations, while foreign interference from external sources is actively managed through channel switching. This differentiated approach optimizes network performance by preventing misclassification of friendly traffic while maintaining appropriate responses to harmful external interference, without requiring complex overall system restructuring.
Data Source
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AI summary
An access point for interference detection includes memory configured to store information identifying one or more non-associated client devices that are not configured to communicate with the access point, and one or more processors, implemented in circuitry, coupled to the memory and configured to; determine that communication signals outputted from a non-associated client device to another access point or from the other access point to the non-associated client device are being received by the access point based on the stored information, determine an amount of in-network interference being generated by the communication signals based at least in part on the determination that the communication signals from the non-associated client device or from the other access point are being received by the access point, and output interference information based on the determined amount of in-network interference.