Wireless Access Point Configuration for Same-Band Interference Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless local area networks (WLANs) face issues such as receiver blocking and excessive transmitter noise floor due to multiple radios operating on the same frequency bands, leading to suboptimal performance and interference.
Innovation Solution
Dynamically configuring wireless access points (APs) by adjusting cell sizes and frequency sub-bands based on network conditions, using a Flexible Radio Assignment (FRA) algorithm to optimize AP capacity and performance, and minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple radios operate on the same frequency band at the same AP, then AP capacity and coverage are improved, but receiver blocking and excessive transmitter noise floor occur
Solution Approach 1:
The patent segments the frequency band into multiple non-overlapping sub-bands and assigns different radios to different sub-bands. This segmentation prevents frequency overlap between co-located radios, eliminating receiver blocking and excessive noise floor while maintaining multi-radio operation capacity.
Solution Approach 2:
The patent applies different frequency sub-band assignments to different radios based on their specific locations and coverage areas. By optimizing the frequency assignment for each radio's local environment, the system maintains high AP capacity while minimizing interference specific to each radio's operational context.
2Object-generated harmful factors
If frequency sub-bands are restricted for co-located radios, then interference is reduced, but available channel choices are limited
Solution Approach 1:
The patent implements dynamic frequency sub-band assignment that adapts to changing network conditions. The system can dynamically select from multiple non-overlapping sub-band combinations based on current interference levels, client distribution, and network load, thereby maintaining reduced interference while preserving adaptability and channel choice flexibility.
Solution Approach 2:
The patent changes the frequency parameter assignments for different radios to non-overlapping sub-bands. By adjusting these frequency parameters dynamically based on network conditions, the system reduces interference while maintaining versatility in channel selection through multiple available non-overlapping sub-band options.
3Object-generated harmful factors
If cell size is reduced for co-located radios, then interference is minimized, but coverage area is decreased
Solution Approach 1:
Instead of reducing cell size in the spatial dimension, the patent resolves interference by transitioning to a frequency dimension solution. Different radios operate on different frequency sub-bands, allowing each radio to maintain its full spatial coverage area while interference is minimized through frequency separation rather than spatial separation.
Data Source
AI summary
Dynamically configuring wireless access points (APs) in wireless local area networks (WLANs). Dynamically determines an AP configuration of cell size and frequency sub-bands of deployed dual-radio WLAN APs for improved network performance. In a first AP configuration, a first AP radio increases the power level of a micro cell while a second AP radio decreases the power level of a macro cell to provide a higher quality of service for the clients connected to the first and second co-located, same-band AP radios. If the increased power of the micro cell causes too much interference between the co-located, same-band AP radios, then a second AP configuration is dynamically applied to lock each AP radio on a different, non-overlapping frequency band, thus minimizing interference between the AP radios and improving network performance.