Proxy Wireless Station Channel Scanning for Access Points
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Solution Overview
Problem
Existing wireless access points face challenges in identifying less impaired channels without disrupting ongoing services, especially during high bitrate transfers or real-time communications, due to the need for channel scanning which can cause service disruptions and is particularly lengthy for dynamic frequency selection channels.
Innovation Solution
An access point identifies idle wireless stations to act as proxies for scanning other channels, gathering congestion metrics and reporting back to determine a more advantageous channel, allowing the access point to switch without service disruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the access point performs channel scanning to identify less impaired channels, then the channel quality is improved, but service disruption occurs during high bitrate transfers or real-time communications
Solution Approach 1:
The patent introduces a proxy wireless station as an intermediary to perform channel scanning on behalf of the access point. The proxy station tunes to candidate channels, measures congestion levels, and reports findings back to the access point, allowing channel assessment without the access point needing to tune away from its current channel during vulnerable service deliveries
Solution Approach 2:
The access point identifies candidate channels and selects a proxy station in advance before performing channel scans. This preliminary preparation allows the actual scanning to occur with minimal disruption, as the proxy station is already positioned and configured to perform the measurement task
2Reliability
If the access point performs DFS channel scanning for radar detection, then channel safety is improved, but the scanning time is significantly increased
Solution Approach 1:
The proxy wireless station acts as an intermediary that performs the time-consuming DFS radar detection process on behalf of the access point. The proxy station tunes to DFS channels for the required detection period, performs radar signal detection, and reports results to the access point, thereby enabling thorough safety checks without prolonged access point unavailability
Solution Approach 2:
The patent uses the proxy station to create a copy of the access point's channel assessment function. The proxy station replicates the scanning and detection processes that the access point would otherwise perform directly, allowing the access point to maintain its current channel while the proxy performs the time-intensive safety verification
3Loss of information
If the access point tunes to a different channel for scanning, then channel identification is achieved, but service delivery is disrupted
Solution Approach 1:
The proxy wireless station serves as a mediator that physically tunes to different channels to gather channel information while the access point remains on its current channel continuously delivering services. The proxy collects congestion metrics and channel conditions from multiple channels and reports back to the access point, decoupling the information-gathering function from the service-delivery function
Solution Approach 2:
The patent segments the channel scanning function from the access point itself, assigning it to a separate proxy wireless station. This segmentation allows the access point to focus on service delivery while the proxy handles channel assessment, enabling simultaneous operation of both functions without mutual interference
Data Source
AI summary
Methods, systems, and computer readable media can be operable to facilitate the use of a station as a proxy for scanning one or more wireless channels. Upon a determination that a currently utilized wireless channel has become impaired, an access point may identify one or more idle wireless stations and may request that the one or more idle wireless stations perform a scan of one or more other wireless channels. The identified wireless station(s) may perform a scan of one or more other wireless channels and may provide an indication of the current level of congestion on each respective wireless channel to the access point. Based on the indication of the current congestion levels of each wireless channel, the access point may determine whether a more advantageous channel is available. If a more advantageous channel is available, the access point may tune to the more advantageous channel.