Access Point Channel Selection Based on Weakest Device Signal Quality
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Solution Overview
Problem
Wireless devices often experience connectivity issues when switching channels due to interference, as the new channel may not support the same high power level as the previous one, leading to potential loss of connectivity.
Innovation Solution
A wireless access point selects a set of candidate frequency bands based on the signal quality of the weakest device, ensuring that the selected frequency bands support a power level that satisfies a signal quality threshold, thereby minimizing the risk of connectivity loss during channel changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a wireless device switches to a different communication channel to avoid interference, then interference is reduced, but the new channel may not support the same power level causing loss of connectivity
Solution Approach 1:
The system performs preliminary evaluation of candidate channels before switching, assessing whether each channel can support the required power level for maintaining connectivity. This preliminary action prevents switching to inadequate channels while still allowing interference avoidance through selective channel changes.
Solution Approach 2:
The system uses feedback about channel characteristics and power level support to make informed switching decisions. By continuously monitoring and evaluating channel conditions, the system can switch away from interfered channels while ensuring the new channel maintains adequate power levels for connectivity.
2Extent of automation
If automatic channel switching is implemented to avoid interference, then interference management is improved, but connectivity may be lost due to insufficient power levels on new channels
Solution Approach 1:
Before executing automatic channel switching, the system preliminarily evaluates candidate channels to ensure they can support the necessary power levels. This preliminary assessment is integrated into the automatic switching process, enabling automated interference avoidance while preventing connectivity loss.
Solution Approach 2:
The system changes the parameters considered in automatic channel switching by incorporating power level support as a critical selection criterion. This modifies the automatic switching behavior to prioritize channels that can maintain adequate power levels, thus preserving connectivity while still providing automated interference management.
3Object-affected harmful factors
If the wireless device switches to a new communication channel, then interference is avoided, but transmission power level may decrease causing connectivity loss
Solution Approach 1:
The system performs preliminary evaluation of candidate channels to assess their power level support capabilities before switching. This ensures that channel changes only occur when the new channel can maintain adequate transmission power levels, preventing power-related connectivity loss while still avoiding interference.
Solution Approach 2:
The system uses feedback information about candidate channel power level support to make informed switching decisions. This feedback mechanism ensures that channel switching avoids both interference and power level deficiencies, maintaining both interference avoidance and adequate transmission power.
Data Source
AI summary
A method includes determining, at an access point, that a channel used to communicate with a device is experiencing interference. The method also includes, in response to the access point detecting that the channel used to communicate with the device is experiencing interference, switching, at the access point to a second channel. The second channel is selected from available channels associated with a set of candidate frequency bands. The set of candidate frequency bands is selected based on a signal quality of a particular device in communication with the access point. The particular device is a communication device in communication with the access point that has a lowest signal quality of signal qualities of communication devices in communication with the access point.