Adaptive MCS Bundling for MU-MIMO Spatial Stream Management
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Solution Overview
Problem
Existing wireless communication technologies, such as IEEE 802.11n, face inefficiencies in data transmission due to the fixed modulation and coding scheme (MCS) settings, which do not adapt to varying channel conditions, leading to suboptimal use of radio resources and increased complexity in managing multiple spatial streams.
Innovation Solution
The method involves dividing transmission/reception interfaces into bundled groups, allowing for adaptive modulation and coding scheme settings based on channel conditions, using a Hybrid Modulation (HyM) scheme that combines equal and unequal modulation techniques to optimize data transmission efficiency across multiple spatial streams.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed modulation and coding scheme (MCS) setting is used, then device complexity is reduced, but radio resource utilization efficiency deteriorates
Solution Approach 1:
The patent segments the transmission interfaces into bundled interface groups, where each group can be independently configured with specific MCS settings. This allows the system to manage multiple MCS configurations in an organized manner, improving radio resource utilization without overwhelming device complexity through unmanaged flexibility.
Solution Approach 2:
The patent enables dynamic MCS selection and switching between different MCS settings based on channel conditions and transmission requirements. The system can adaptively choose appropriate MCS configurations for different bundled interface groups, optimizing radio resource utilization while maintaining manageable complexity through structured dynamics.
2Productivity
If adaptive MCS settings are implemented, then radio resource utilization efficiency is improved, but device complexity increases
Solution Approach 1:
By dividing transmission interfaces into bundled interface groups, the patent creates manageable units for MCS configuration. Each group can be independently optimized, allowing adaptive MCS settings to improve radio resource utilization while keeping the complexity of managing multiple configurations organized and controllable.
Solution Approach 2:
The patent applies different MCS settings to different bundled interface groups based on their specific channel conditions and transmission requirements. This localized optimization improves overall radio resource utilization efficiency while avoiding the need to manage complex global MCS configurations, as each group can be independently tuned.
3Productivity
If multiple spatial streams are transmitted, then data transmission efficiency is improved, but complexity in managing multiple streams increases
Solution Approach 1:
The patent segments multiple spatial streams into bundled interface groups, where each group can be managed with unified MCS settings. This segmentation approach maintains high data transmission efficiency through multiple spatial streams while reducing the complexity of managing each stream individually by grouping them into manageable units.
4Productivity
If unequal modulation schemes are applied to different streams, then data transmission efficiency is optimized, but device complexity increases
Solution Approach 1:
The patent applies unequal modulation schemes to different bundled interface groups based on their specific channel conditions and requirements. Each group can have optimized modulation settings tailored to its local characteristics, improving overall data transmission efficiency while keeping complexity manageable through the structured grouping approach.
Solution Approach 2:
The patent enables dynamic selection and switching of modulation schemes within different bundled interface groups based on varying channel conditions. This dynamic approach optimizes data transmission efficiency by adapting modulation levels to current conditions while maintaining manageable complexity through the organized group structure.
Data Source
AI summary
A method for receiving data by a receiving station by using a multi-user multiple input multiple output (MU-MIMO) in a wireless local area network system, the method includes receiving, via a transceiver in the receiving station, a physical layer convergence procedure (PLCP) protocol data unit (PPDU) from a transmitting station, the PPDU including a bundled interface field, a modulation and coding scheme (MCS) index field and a data field, wherein the bundled interface field indicates a number of a plurality of spatial streams allocated to the receiving station among a plurality of receiving stations, and indicates a total number of spatial streams allocated to the plurality of receiving stations that receive the PPDU, and wherein the MCS index field indicates a same MCS index used for modulating and coding the plurality of spatial streams allocated to the receiving station; and demodulating and decoding, via a processor in the receiving station and by using an MCS scheme indicated by the MCS index field, the data field received via the plurality of spatial streams indicated by the bundled interface field.