Hub-Based Wireless Channel Selection Using Active Noise Measurement
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Solution Overview
Problem
Wireless communication systems face interference from unintended noise sources and background noise, which degrades communication quality and affects other devices, and existing methods for channel selection do not adequately address these issues.
Innovation Solution
A hub system that transmits a response request to devices on multiple channels, listens for responses, and determines an activity characteristic for each channel based on received signals, allowing it to select the best channel for communication by considering potential noise sources, including devices that may not typically respond to the request.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the hub listens passively on all channels to measure background noise, then measurement precision is improved, but loss of time increases due to extended scanning duration
Solution Approach 1:
The system performs preliminary actions by sending response requests to activate other devices before measuring channel activity. This ensures that devices are in their normal operational state during measurement, providing accurate noise level readings without requiring extended passive listening periods.
Solution Approach 2:
The hub sends response requests to devices and measures their responses to obtain feedback about channel activity. This active feedback mechanism allows the system to assess noise levels and device states efficiently, reducing the time needed compared to passive monitoring while maintaining measurement accuracy.
2Measurement precision
If the hub activates all devices to transmit responses for noise measurement, then measurement precision is improved, but use of energy increases
Solution Approach 1:
The hub performs preliminary actions by sending response requests to activate other devices before measuring channel activity. This ensures that devices are in their normal operational state during measurement, providing accurate noise level readings without requiring extended passive listening periods.
Solution Approach 2:
The system temporarily activates devices only for the purpose of measurement and then returns them to their normal state. This brief activation period minimizes energy consumption while still obtaining the necessary measurement data about channel activity and noise levels.
3Reliability
If the system measures channel activity during normal device operation, then reliability is improved, but object-generated harmful factors increase due to interference from activated devices
Solution Approach 1:
The system converts the harmful interference noise generated by responding devices into a beneficial measurement opportunity. By requesting responses from devices, the hub uses their transmitted signals as indicators of channel activity and noise levels, transforming what would be interference into useful measurement data.
Solution Approach 2:
The hub performs preliminary actions by sending response requests to activate other devices before measuring channel activity. This ensures that devices are in their normal operational state during measurement, providing accurate noise level readings without requiring extended passive listening periods.
Data Source
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AI summary
A hub, a system comprising the hub, a method of wireless communication channel selection and an associated computer program product, wherein the hub is configured for selective wireless communication over any channel of a plurality of wireless communication channels, the hub being configured to transmit a response request, the response request comprising a request for at least one or any device receiving and processing at least part of the response request to transmit a response over a listening period; during the listening period, listen to each channel of the plurality of channels; and determine an activity characteristic for each channel based, at least in part, on activity received by the hub on the respective channel during the listening period.