Multi-Link Device Operation Mode Switching for Wi-Fi 7 Throughput Optimization
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Solution Overview
Problem
Current Wi-Fi 7 technologies, as specified by the IEEE 802.11be standard, face challenges in optimizing communication throughput and latency due to limitations in switching operation modes based on channel conditions in multi-link multi-radio (MLMR) systems, particularly when channel spacing is insufficient, leading to interference and reduced performance.
Innovation Solution
A multi-link device with multiple radio circuits and a processor dynamically switches between baseline and enhanced operation modes based on channel conditions, adjusting the number of spatial streams and transmission modes to maximize throughput by determining whether to use multiple links or a single link for data transmission, thereby optimizing channel utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple links are used to receive multiple streams simultaneously, then throughput is improved, but interference between links increases when channel spacing is insufficient
Solution Approach 1:
The patent implements dynamic operation mode switching between baseline mode (using multiple links simultaneously) and enhanced mode (using a single link with more spatial streams). The system monitors channel conditions and dynamically transitions between modes to optimize the balance between throughput and interference, resolving the contradiction by making the system adaptable rather than static
Solution Approach 2:
The patent changes the operational parameters by switching between different operation modes (baseline and enhanced) with distinct spatial stream configurations. In baseline mode, multiple spatial streams are distributed across multiple links, while in enhanced mode, more spatial streams are concentrated on a single link, thereby changing the system state to optimize performance based on channel conditions
2Productivity
If the system operates in baseline mode with multiple links, then channel utilization is optimized, but latency increases due to interference
Solution Approach 1:
The system incorporates feedback mechanisms to monitor channel conditions and performance metrics. Based on this feedback, the system dynamically switches between baseline and enhanced operation modes, adjusting the balance between channel utilization and latency in real-time to minimize overall performance degradation
3Object-affected harmful factors
If enhanced mode is used with a single link, then interference is reduced, but throughput decreases when channels are idle
Solution Approach 1:
The system dynamically adapts its operation mode based on real-time channel conditions. When channels are idle and interference is minimal, the system switches to baseline mode to maximize throughput using multiple links. When interference is detected, it transitions to enhanced mode to reduce interference, thereby resolving the contradiction through dynamic adaptation
Data Source
AI summary
A method of switching an operation mode of a first multi-link device includes the first multi-link device establishing a plurality of links to a second multi-link device, and the first multi-link device determining according to a channel condition whether to receive a plurality of streams via the plurality of links or via one of the plurality of links.