Unequal MCS Signaling for Channel-Specific Wireless Throughput
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies due to the use of uniform Modulation and Coding Schemes (MCS) across all channels, leading to suboptimal throughput, particularly when primary and secondary channels have different clear channel assessment methods and sensitivities.
Innovation Solution
Implementing an Unequal Modulation and Coding Scheme (UEM) that dynamically assigns different MCSs to various channels based on their specific characteristics, optimizing data transmission rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If uniform MCS is used across all channels, then system simplicity is maintained, but throughput is suboptimal due to ignoring channel-specific conditions
Solution Approach 1:
The patent segments the channel resources into different groups (e.g., primary channel and secondary channels) and assigns different MCS values to each group. This allows the system to optimize throughput for each channel segment based on its specific characteristics while maintaining manageable complexity through structured segmentation.
Solution Approach 2:
The patent applies local quality by assigning different MCS values to different channels or channel groups based on their individual conditions. Each channel receives a tailored MCS assignment that matches its specific transmission characteristics, thereby optimizing overall system throughput without requiring complete redesign of the entire communication system.
2Productivity
If different MCSs are assigned to different channels, then throughput is optimized, but signaling overhead increases
Solution Approach 1:
The patent merges the MCS assignment for multiple channels into a unified signaling structure. By combining MCS indications for different channels into a single signaling message or framework, the system reduces the total signaling overhead compared to sending separate MCS assignments for each channel, while still maintaining the ability to optimize throughput per channel.
Solution Approach 2:
The patent creates a universal MCS assignment mechanism that can handle both single-channel and multi-channel scenarios. This multi-functional approach allows the same signaling structure to adapt to different channel configurations, reducing the need for multiple specialized signaling messages and thereby minimizing overall signaling overhead.
3Productivity
If channel-specific MCS assignment is implemented, then data transmission efficiency is improved, but system complexity increases
Solution Approach 1:
The patent implements dynamic MCS assignment where the MCS values can be adjusted based on channel conditions, transmission requirements, and system state. This dynamic approach allows the system to optimize data transmission efficiency in response to changing conditions while using predefined rules and algorithms to manage the complexity of the adjustment process.
Solution Approach 2:
The patent changes the MCS parameters (modulation order and coding rate) based on channel-specific characteristics. By systematically varying these parameters according to measured channel conditions and predefined optimization criteria, the system improves data transmission efficiency while keeping the complexity management through structured parameter adjustment rather than complete system redesign.
Data Source
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AI summary
For example, an AP may be configured to set RU allocation information for a user STA in an RU allocation subfield of a user field for the user STA. For example, the RU allocation information for the user STA may indicate an RU allocation for a TB UL transmission from the user STA. For example, the AP may be configured to set a 7-bit UL MCS subfield, for example, after the RU allocation subfield, to indicate a first MCS and a second MCS for the user STA. For example, the first MCS may be assigned to a first UL resource of the RU allocation for the user STA, and the second MCS may be assigned to a second UL resource of the RU allocation for the user STA. For example, the AP may be configured to transmit a trigger frame including the user field for the user STA.