Dynamic Link Plan Selection for Wi-Fi 7 Multi-Link Throughput Optimization
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Solution Overview
Problem
In Wi-Fi 7 multi-link operations, throughput and latency can be degraded if the packet error rate of one link increases, necessitating effective control of links to maintain high performance.
Innovation Solution
A wireless communication method that dynamically adjusts link plans and spatial stream settings by determining the best link configuration based on performance metrics, such as goodput and packet error rate, to optimize communication between devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple links are used simultaneously to increase throughput, then data transmission capacity is improved, but system complexity and difficulty of controlling link performance increase
Solution Approach 1:
The patent implements dynamic link plan selection that adapts to changing channel conditions. The system continuously monitors packet error rates and performance metrics across multiple links, then dynamically adjusts which links are active and how spatial streams are distributed. This dynamic adaptation resolves the contradiction by allowing high throughput when conditions permit while simplifying control when conditions deteriorate.
Solution Approach 2:
The system changes operational parameters (link plans, spatial stream allocations, modulation schemes) based on measured performance. By monitoring packet error rates and throughput on each link, the system adjusts parameters to optimize overall performance while maintaining manageable complexity through automated parameter tuning rather than manual configuration.
2Reliability
If packet error rate on one link increases, then link reliability is improved through error correction, but throughput and latency performance degrade
Solution Approach 1:
The patent implements feedback mechanisms that monitor packet error rates and performance metrics on each link. When error rates exceed thresholds, the system receives feedback about degraded link quality and responds by adjusting link plans, redistributing spatial streams, or switching to more robust modulation schemes. This feedback loop maintains reliability while minimizing throughput degradation through adaptive responses.
Solution Approach 2:
The system segments the spatial streams across multiple links and can independently adjust the allocation on each link. When one link experiences high error rates, the system can segment the data flow to use fewer spatial streams on that link while maintaining full utilization on healthier links, thereby preserving overall throughput while maintaining reliability through diversified path usage.
3Productivity
If more spatial streams are allocated to one link, then data transmission capacity is improved, but system robustness decreases when that link experiences errors
Solution Approach 1:
The patent applies local quality by allocating different numbers of spatial streams to different links based on their individual channel conditions. Rather than uniformly distributing spatial streams, the system evaluates each link's packet error rate and performance characteristics, then locally optimizes the spatial stream allocation for each link. This allows high-capacity links to use more spatial streams while vulnerable links use fewer streams, maintaining both capacity and robustness.
Solution Approach 2:
The spatial stream allocation is dynamically adjusted based on real-time performance monitoring. When a link shows signs of degradation, the system dynamically reduces spatial stream allocation on that link and redistributes streams to healthier links. This dynamic reallocation maintains system robustness while preserving overall data transmission capacity through flexible resource management.
Data Source
AI summary
The present invention provides a wireless communication method of an electronic device, wherein the wireless communication method includes the steps of: determining one link plan from a plurality link plans; using the determined link plan as a current link plan to configure a first link and a second link of the electronic device; determining whether the current link plan satisfies a first condition; in response to the current link plan satisfying the first condition, determining whether performance of another link plan is better than performance of the current link plan; and in response to the performance of another link plan being better than the performance of the current link plan, determining the another as the current link plan to configure the first link and the second link of the electronic device to communicate with the another electronic device.