Wireless Link Topology Optimization for Load and Interference
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Solution Overview
Problem
Existing methods for managing multi-hub wireless networks fail to optimize network topologies due to their reliance on discrete channel estimation measurements, neglecting factors like load and inter-channel interference, which leads to suboptimal throughput and coverage.
Innovation Solution
The proposed solution involves a more dynamic analysis of network measurements, including load and inter-channel interference, to identify optimal network topologies. This approach considers direct throughput measurements between extenders instead of relying solely on RSSI, and adjusts band allocation to enhance overall network throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If stations connect to the hub with the highest RSSI, then connection strength is improved, but network throughput deteriorates due to hub overload and inter-channel interference
Solution Approach 1:
The patent changes the connection selection parameter from RSSI alone to a composite metric that includes hub load and inter-channel interference. This allows the system to balance connection strength with overall network throughput by considering multiple parameters simultaneously when making association decisions.
Solution Approach 2:
The system implements feedback mechanisms where hubs report their current load and interference levels to stations. This enables stations to make informed connection decisions that account for real-time network conditions, preventing hub overload and optimizing throughput while maintaining reliable connections.
2Ease of manufacture
If discrete channel estimation measurements are used, then measurement simplicity is improved, but topology optimization deteriorates due to neglect of load and interference
Solution Approach 1:
The patent makes the measurement system multi-functional by having stations and hubs exchange not only channel estimation data but also load and interference information. This universal information exchange enables both simple measurements and comprehensive optimization without requiring separate measurement systems.
Solution Approach 2:
The system performs preliminary collection of load and interference data before making topology optimization decisions. This allows the optimization algorithm to consider all relevant factors (channel quality, load, interference) simultaneously, achieving better throughput without complicating the actual measurement process.
3Device complexity
If a single AP is used, then network simplicity is improved, but coverage deteriorates due to limited range and placement constraints
Solution Approach 1:
The patent segments the single AP into multiple distributed hubs (APs and extenders) that work cooperatively. This segmentation extends coverage to multiple floors and areas while maintaining relative network simplicity through standardized hub-station association protocols and centralized coordination.
Solution Approach 2:
The system introduces intermediary extenders that relay communications between stations on different floors and the main AP. These intermediaries extend coverage area without requiring direct line-of-sight connections, effectively expanding network reach while keeping the overall architecture manageable.
4Area of stationary object
If multi-hub networks are deployed to extend coverage, then coverage area is improved, but network management complexity deteriorates due to competing objectives of different hubs
Solution Approach 1:
The patent changes the association decision parameters to include hub load and interference levels alongside signal strength. This allows multiple hubs with competing objectives to be managed systematically, as stations can objectively compare hubs based on composite metrics rather than simple RSSI, reducing management complexity despite multiple hubs.
Solution Approach 2:
The system implements dynamic hub selection where associations can change based on real-time conditions. This dynamic approach allows the network to adapt to changing load and interference patterns, simplifying management by automatically resolving conflicts between hubs rather than requiring static, pre-configured assignments.
Data Source
AI summary
Various embodiments of the invention describe systems, devices and methods used to improve network topology connectivity by implementing throughput analysis between an access point and a plurality of extenders. This throughput analysis may include measurements such as interference and load values. Various embodiments of the invention may also implement band-steering between wireless channels.