Dynamic MCS Table Selection for NR Performance
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Solution Overview
Problem
Wireless communication networks face interference and performance degradation due to increasing demand for mobile broadband access, leading to congested networks and reduced user experience, especially in environments with multiple users and deployments of short-range wireless systems.
Innovation Solution
A method and apparatus for determining transmission characteristics at a base station, selecting a modulation and coding scheme (MCS) table from a plurality of tables based on these characteristics, and transmitting the selected table to a user equipment (UE) to optimize performance, which includes determining a set of transmission characteristics related to a UE's environment, selecting an appropriate MCS table from multiple tables, and transmitting an indication of the selected table to the UE.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single MCS table is used for all transmission conditions, then the system complexity is low, but the performance in specific transmission environments is degraded
Solution Approach 1:
The patent implements dynamic MCS table selection where the base station chooses different MCS tables based on real-time transmission characteristics such as spectral efficiency thresholds and channel conditions. This allows the system to adapt to varying transmission environments rather than using a static single table approach.
Solution Approach 2:
The patent changes the parameter of MCS table selection based on transmission characteristics including spectral efficiency thresholds. Different MCS tables are selected according to different spectral efficiency ranges, allowing optimization for specific transmission conditions while maintaining manageable system complexity through parameter-based selection.
2Reliability
If multiple MCS tables are implemented with different MCS values, then the performance for specific transmission conditions is improved, but the system complexity increases
Solution Approach 1:
The patent segments the MCS tables into multiple distinct tables, each optimized for specific transmission conditions. Each MCS table contains MCS values tailored for particular spectral efficiency ranges and channel conditions, allowing the system to divide the transmission space into manageable segments with specialized optimization.
Solution Approach 2:
The patent creates MCS tables that serve multiple functions - each table is designed to handle specific transmission scenarios while the overall system can universally support various transmission conditions by selecting the appropriate table. This multi-functionality allows a single MCS table structure to address diverse transmission requirements.
3Reliability
If MCS tables are optimized for specific transmission conditions, then the performance in those conditions is enhanced, but the adaptability to varying environments is reduced
Solution Approach 1:
The patent implements dynamic selection among multiple MCS tables based on real-time transmission characteristics. The base station monitors spectral efficiency thresholds and channel conditions, then dynamically selects the most appropriate MCS table, ensuring both optimization for specific conditions and adaptability to varying environments.
Solution Approach 2:
The system uses feedback mechanisms where the base station monitors transmission performance and spectral efficiency, then selects MCS tables accordingly. This feedback loop ensures that the system adapts to changing environmental conditions while maintaining optimized performance through appropriate table selection.
Data Source
AI summary
Multiple modulation and coding scheme (MCS) tables for new radio (NR) networks is disclosed. Multiple MCS tables are defined with different sets of MCS values selected for improved performance in various transmission conditions. The multiple MCS tables may be known to base stations and user equipments (UEs) in the network. A serving base station may determine a set of transmission characteristics related to a transmission environment of a UE. The base station selects one of the MCS tables of the multiple MCS tables based on the set of transmission characteristics. The selected MCS table includes MCS values that may provide improved performance for the UE considering one or more of the characteristics of the set of transmission characteristics. The base station will then transmit an indication of the selected MCS table to the served UE.