Automated Frequency Coordination for 6 GHz Wi-Fi Interference
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Solution Overview
Problem
Existing communication systems face challenges in efficiently coordinating frequency allocation to minimize interference between incumbent and non-incumbent radios in shared wireless communication frequency bands, such as the 6 GHz band.
Innovation Solution
Implementing an Automated Frequency Coordination (AFC) allocation scheme that configures multiple Access Points (APs) within a co-located AP set to operate on separate wireless communication channels in the 6 GHz frequency band, with AFC allocations corresponding to different coverage areas and uncertainty values, allowing for dynamic channel assignment based on client station location.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If transmission power of non-incumbent radios is restricted to ensure low interference to incumbent radios, then interference to incumbent radios is reduced, but communication performance and coverage area of non-incumbent radios deteriorate
Solution Approach 1:
The patent applies local quality by configuring different maximum transmission power levels for different non-incumbent radios based on their specific geographic locations and distance from incumbent radios. Instead of applying a uniform power restriction across all non-incumbent radios, the system tailors the power limits locally to each device's position, thereby minimizing interference to incumbents while maximizing coverage area for each non-incumbent radio where possible.
Solution Approach 2:
The system dynamically adjusts transmission power restrictions based on real-time or near-real-time location information of both non-incumbent radios and incumbent radios. As devices move, the AFC system recalculates and updates the maximum allowed transmission power levels, enabling the coverage area to expand or contract dynamically while始终保持 interference protection for incumbent radios.
2Productivity
If multiple Access Points operate in the same frequency band, then network capacity and coverage are improved, but interference between Access Points increases
Solution Approach 1:
The patent segments the available frequency spectrum into multiple channels and assigns different channels to different Access Points within the co-located set. The AFC system divides the 6 GHz band into numerous narrow channels (e.g., 20 MHz, 40 MHz, or 80 MHz channels) and allocates specific channels to each AP, thereby enabling multiple APs to operate simultaneously with minimal mutual interference while maintaining high network capacity.
Solution Approach 2:
The system changes operational parameters (frequency channel and transmission power) for each Access Point based on AFC allocation. The AFC system continuously monitors the radio environment and adjusts the operating parameters of each AP dynamically, selecting optimal frequency channels and power levels that maximize network capacity while minimizing interference between co-located Access Points.
3Measurement precision
If AFC allocation is implemented with multiple coverage areas and uncertainty values, then frequency coordination accuracy is improved, but system complexity increases
Solution Approach 1:
The patent implements partial action by dividing the service area into multiple coverage areas with different uncertainty values, but only applying the full multi-parameter AFC allocation complexity to areas where it is most needed. For areas with low uncertainty (e.g., indoor environments with precise location tracking), the system uses simplified allocation rules, while reserving the complex multi-parameter coordination for areas with high uncertainty (e.g., outdoor environments), thereby balancing accuracy requirements with system complexity.
Data Source
AI summary
For example, an AP device, which includes a co-located AP set of a plurality of APs, may be configured to configure the plurality of APs to communicate over a respective plurality of wireless communication channels in a 6 GHz frequency band according to an Automated Frequency Coordination (AFC) allocation scheme including a plurality of AFC allocations for the plurality of wireless communication channels, respectively, wherein the plurality of AFC allocations corresponds to a plurality of different coverage areas relative to the AP device; to monitor an estimated distance between a STA and the AP device; and to instruct the STA to communicate with the co-located AP set over an assigned wireless communication channel of the plurality of wireless communication channels.