Automatic Channel Layering in Wi-Fi Systems
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Solution Overview
Problem
Wi-Fi communication systems face challenges in ensuring comprehensive coverage without interference, as access points (APs) spaced too far apart create coverage holes, while those spaced too closely operate inefficiently due to interference.
Innovation Solution
The system automatically configures multiple access points to operate on different channels, maximizing coverage by associating APs with specific channels, allowing them to be physically close without interfering with each other, and dynamically reassigns them based on feedback to maintain optimal channel loading and coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If access points are spaced far apart, then coverage holes are reduced, but interference between access points decreases, however coverage holes appear and system efficiency decreases
Solution Approach 1:
The system segments the wireless communication spectrum into multiple channels, allowing access points to operate on different channels simultaneously. This segmentation enables dense AP deployment without interference, as each AP operates on a dedicated channel portion, resolving the contradiction between achieving comprehensive coverage and maintaining system efficiency.
Solution Approach 2:
The patent introduces a new dimension for resource allocation by assigning access points to different channels (frequency dimension) rather than relying solely on spatial separation. This dimensional change allows multiple APs to coexist in the same physical location without interference, enabling both complete coverage and high system efficiency simultaneously.
2Area of stationary object
If access points are spaced closely, then coverage holes are eliminated, but interference between access points increases, reducing system efficiency
Solution Approach 1:
The wireless spectrum is segmented into multiple channels that can be assigned to different access points. This segmentation allows closely spaced APs to operate on different channels without interfering with each other, eliminating the harmful interference effect while maintaining complete coverage.
Solution Approach 2:
The system control element acts as an intermediary that manages channel assignments for access points. It collects information from devices, determines optimal AP-channel associations, and dynamically reassigns channels to prevent interference between closely spaced APs while maintaining coverage.
3Productivity
If multiple access points operate on the same channel, then channel capacity is充分利用, but interference limits the number of devices that can use the same channel
Solution Approach 1:
The patent transitions from single-channel operation to multi-channel operation by assigning different APs to different channels. This dimensional expansion in the frequency domain allows the system to maintain high channel capacity utilization across multiple channels while avoiding interference by ensuring each channel has limited concurrent users.
Data Source
AI summary
Deploying multiple access points on multiple wireless communication channels to optimize coverage area. Additional channels provide additional communication capability which multiple AP's, and their associated stations, can collectively use. An additional set of AP's can be disposed in the additional communication channel, with multiple communication channels possibly physically intersecting. The system control element collects information from devices in the wireless communication system, and automatically configures which AP is assigned to which communication channel. The system control element determines which AP's are servicing which physical locations, in response to feedback from AP's and stations in those locations. The system control element assigns, or re-assigns, AP's in each physical location, with the effect of optimizing coverage.