Wi-Fi Channel Steering by Station Data Exchange Capacity
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Solution Overview
Problem
Conventional wireless client steering methods are inefficient in managing the increasing number of Wi-Fi devices capable of operating in both 2.4 GHz and 5 GHz, as they do not effectively utilize data exchange capacity to optimize channel allocation, leading to suboptimal network performance.
Innovation Solution
The system detects dual-band capability in wireless stations through probe requests and assigns them to either high throughput (5 GHz) or low throughput (2.4 GHz) channels based on their data exchange capacity, determined by factors such as supported channel width, multiple user beamforming, and spatial streams, to optimize bandwidth usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional band steering methods are used to direct dual-band clients to 5 GHz, then high throughput capability is improved, but network capacity is reduced when low throughput clients occupy the channel
Solution Approach 1:
The patent applies local quality by assigning different channel types (high throughput vs. low throughput) to different wireless stations based on their specific capabilities. Instead of uniformly directing all dual-band clients to 5 GHz, the system evaluates each client's data exchange capacity and assigns them to appropriate channels, making the channel allocation adaptive to local client characteristics rather than applying a blanket steering policy
Solution Approach 2:
The patent changes the parameter of channel assignment from a static band-based approach to a dynamic capability-based approach. By evaluating data exchange capacity parameters and adjusting channel assignments accordingly, the system transforms the rigid conventional steering method into a flexible allocation mechanism that optimizes both throughput and network capacity based on real-time client capabilities
2Ease of operation
If low throughput wireless stations are allowed to occupy high throughput channels, then ease of operation is improved, but bandwidth efficiency deteriorates
Solution Approach 1:
The patent implements self-service by enabling wireless stations to self-identify their data exchange capabilities through probe requests and enabling the access point to automatically perform capability evaluation and channel assignment. This eliminates the need for manual configuration while ensuring that each station receives appropriate channel assignment based on its inherent capabilities, maintaining ease of operation without sacrificing bandwidth efficiency
Data Source
AI summary
Wireless stations of a Wi-Fi network based are steered to either a high throughput channel or a low throughput channel based on data exchange capacity, in addition to dual-band capability. A probe request data packet from a wireless station seeking to join a channel of the plurality of channels supported by the access point is detected. Dual-band capability is determined as indicated by the probe request. Responsive to having dual-band capability, a high throughput capability of the wireless station is determined as indicated by the probe request. Responsive to having high throughput capability, the wireless station is assigned to a high throughput channel. A probe response data packet with a channel assignment is generated for transmission to the wireless station.