Intelligent Wireless Channel Selection Weights
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Solution Overview
Problem
Current WLAN roaming decisions primarily focus on signal strength and quality, neglecting device-specific characteristics and other factors that can impact wireless communication performance, such as channel types and interference.
Innovation Solution
Implementing intelligent wireless channel selection methods where client devices weigh signal strength and quality measurements based on device-specific characteristics, channel types, and interference factors to determine optimal roaming decisions, using channel selection settings that include weights for edge channels, DFS, and LTE channel overlaps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If WLAN roaming decisions are based only on signal strength and quality, then the roaming process is simple and fast, but the communication performance may be suboptimal due to ignoring device-specific characteristics and channel conditions
Solution Approach 1:
The system pre-determines channel selection settings including weights for edge channels, DFS channels, and LTE overlapping channels before roaming decisions are made. These settings are stored and readily available when a roaming event occurs, allowing the device to quickly apply pre-analyzed channel characteristics without performing complex analysis in real-time during the roaming process
Solution Approach 2:
The channel selection settings are dynamically updated based on device-specific characteristics and observed communication performance. The system monitors performance metrics and adjusts the weights and settings for different channel types accordingly, allowing the roaming decision mechanism to adapt and improve over time while maintaining a relatively simple decision structure
2Measurement precision
If the client device applies multiple channel selection settings with weights to measurements, then the roaming decision accuracy is improved, but the processing time and computational load increase
Solution Approach 1:
Channel selection settings including weights for different channel types (edge channels, DFS channels, LTE overlapping channels) are determined and stored in advance before actual roaming decisions are needed. This pre-computation allows the device to apply multiple weighted measurements without significant additional processing time during the critical roaming decision moment
Solution Approach 2:
The system changes the parameters of the measurements by applying pre-determined weights to signal strength and quality measurements based on channel type. This transformation of raw measurements into weighted measurements is a simple mathematical operation that maintains speed while improving the accuracy and reliability of channel selection
Data Source
AI summary
A client device may obtain a first measurement corresponding to a serving WLAN access point that uses a first channel. The client device may also obtain a second measurement corresponding to a target WLAN access point that uses a second channel. To facilitate intelligent wireless channel selection, the client device may weight at least one of the first measurement and the second measurement based on channel selection settings to obtain at least one weighted measurement. The client device may determine whether to roam from the serving WLAN access point to the target WLAN access point based on the at least one weighted measurement.