Wireless Mesh Backhaul Link Adaptation for Airtime Interference
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Solution Overview
Problem
In Wi-Fi mesh networks, the shared use of communication channels by backhaul (BH) and fronthaul (FH) leads to interference, limiting throughput and overall network performance, especially in high-demand environments.
Innovation Solution
A controller collects link status information, including airtime, to determine the most efficient backhaul link configuration by comparing throughput between initial and candidate links, dynamically switching to higher-throughput options using a backhaul link adaption mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If backhaul and fronthaul share the same communication channel, then device complexity is reduced, but network throughput deteriorates due to interference and channel competition
Solution Approach 1:
The patent segments the communication channels by frequency bands, dedicating 6G channel for backhaul transmission while 2G and 5G channels are used for fronthaul. This frequency domain segmentation eliminates channel competition and interference between backhaul and fronthaul, thereby improving network throughput without significantly increasing controller complexity
Solution Approach 2:
The patent implements dynamic backhaul link adaptation that automatically detects channel conditions and switches between different backhaul links (6G dedicated link or 5G shared link) based on real-time throughput requirements and channel availability. This dynamic adaptation optimizes network performance while maintaining manageable controller complexity through automated decision-making
2Productivity
If dedicated 6G backhaul link is used, then network throughput is improved, but adaptability to different network scenarios deteriorates
Solution Approach 1:
The patent designs a multi-functional backhaul system that can operate in multiple modes: dedicated 6G backhaul mode for high-throughput scenarios, shared 5G backhaul mode for cost-sensitive scenarios, and hybrid modes combining both. The controller universally supports all these modes and automatically selects the appropriate mode based on network requirements, thereby maintaining both high throughput capability and scenario adaptability
3Productivity
If backhaul link adaptation mechanism is implemented, then network throughput is enhanced, but device complexity increases
Solution Approach 1:
The patent implements a self-service backhaul link adaptation mechanism where the controller automatically monitors channel conditions, evaluates link quality metrics, and performs link switching without external intervention. The system uses predefined algorithms to autonomously detect optimal backhaul links and execute switching decisions, enhancing throughput while keeping controller complexity manageable through automation rather than manual configuration
Data Source
AI summary
A wireless communication method and system are disclosed. After a station is wireless connected to an agent, the agent monitors airtime of each link of the station to report a first link status to a controller. The controller collects the first link status and detects scenarios based on the first link status. The controller determines to select among an initial second link and a candidate second link status as a second link status based on whether a throughput of the candidate second link status is higher than a throughput of first link status. The controller informs the second link status to the agent, and the controller wireless communicates with the agent over bands corresponding to the second link status.