Access Point Clustering for Interference-Aware Channel Assignment
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Solution Overview
Problem
The increasing number of wireless devices operating in the 5 GHz band leads to higher wireless interference, resulting in lower transmission speeds due to multiple devices competing for bandwidth, and conventional off-channel scanning methods cause a 'ping-pong' effect where all devices switch to the same channel, leading to persistent interference.
Innovation Solution
A communication management resource groups wireless access points into clusters based on interference susceptibility and location awareness, assigning distinct channels to each cluster to avoid interference, using feedback on signal quality and channel availability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If off-channel scanning is implemented to switch access points to channels with lower interference, then wireless transmission speed is improved, but a 'ping-pong' effect occurs where all devices switch to the same channel causing persistent interference
Solution Approach 1:
The patent segments access points into different clusters based on their geographic locations and interference characteristics. Each cluster is assigned dedicated channels, preventing the ping-pong effect where all APs switch to the same channel. This segmentation allows simultaneous operation of multiple clusters on different channels, maintaining transmission speed while reducing overall interference.
Solution Approach 2:
The patent applies local quality by assigning different channel configurations to different geographic locations or clusters of access points. Instead of a uniform channel switching approach, each cluster receives customized channel assignments based on local interference conditions, allowing optimal transmission speed in each area while preventing global interference conflicts.
2Object-affected harmful factors
If channel changes occur frequently in response to off-channel scanning, then wireless interference is reduced, but network stability deteriorates due to operational constraints limiting changes to once every 24 hours
Solution Approach 1:
The patent performs preliminary channel assignment by clustering access points and assigning channels to clusters in advance, rather than allowing individual APs to switch channels frequently. This preliminary configuration stabilizes the network by establishing a long-term channel plan that prevents both excessive switching and persistent interference, resolving the contradiction between interference reduction and network stability.
3Object-generated harmful factors
If more wireless channels are assigned to access points in a cluster, then wireless interference is reduced, but the number of available channels decreases limiting the number of clusters
Solution Approach 1:
The patent introduces a new dimension of organization by grouping access points into hierarchical clusters and sub-clusters, allowing multi-level channel assignment. This dimensional approach enables efficient utilization of limited channels by assigning them at different cluster levels, reducing interference through structured allocation while maximizing the number of supportable clusters within the constrained channel pool.
Data Source
AI summary
A system as discussed herein includes a communication management resource operative to manage wireless communications in a network environment. The communication management hardware receives feedback indicating signal quality, and operating channel of wireless access points receiving wireless communications from each other in the network environment. The communication management resource groups the wireless access points into one or more clusters based on the received feedback indicating the signal quality. Based on the grouping, the communication management resource further assigns different wireless channels for use by respective wireless access points in each cluster of the multiple clusters.