Adaptive Transmission Power Control for Multi-MCS Wireless Signals
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Solution Overview
Problem
High-frequency wireless communication systems face challenges in managing transmission power and signal stability due to the use of multiple TRPs and beamforming, particularly at millimeter wave frequencies above 52.6 GHz, which affects data signalling efficiency and power amplifier operation.
Innovation Solution
A method and system for transmitting data signalling using multiple Modulation and Coding Schemes (MCS) with adaptive transmission power control, where the power for different sets of data blocks is dependent on their respective MCS, optimizing power amplifiers and maintaining signal stability by smoothing power changes and avoiding sudden drops.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple TRPs with simultaneous communication links are used to provide high-frequency wireless communication, then communication bandwidth and data transmission capability are improved, but transmission power management complexity and signal stability deteriorate
Solution Approach 1:
The patent segments the data blocks into first and second sets, each associated with different MCS values. The transmission power is then segmented and controlled separately for each set, allowing independent power management for different data blocks transmitted through multiple TRPs. This segmentation resolves the complexity by enabling granular power control rather than uniform power management across all transmission links.
2Speed
If beamforming with small beams is used for high-frequency communication, then communication focus and signal directionality are improved, but transmission power stability and signal quality deteriorate
Solution Approach 1:
The patent implements dynamic transmission power control where the power for first and second sets of data blocks is determined based on their respective MCS values. The transmitting radio node dynamically adjusts power levels during transmission, allowing the system to maintain stability despite the directional nature of beamforming. This dynamic adjustment compensates for power fluctuations that would otherwise occur with small, focused beams.
3Adaptability or versatility
If different MCS values are used for different data blocks, then data transmission efficiency and adaptability are improved, but transmission power control complexity and signal stability deteriorate
Solution Approach 1:
The patent changes the transmission power parameter based on the MCS value associated with each data block set. By establishing a relationship between MCS and power levels, the system can adapt power control to match the modulation and coding characteristics of different data blocks. This parameter change approach allows the system to maintain simplicity while achieving the adaptability needed for efficient data transmission with varying MCS values.
Data Source
AI summary
A method of operating transmitting radio node in a wireless communication network. The method includes transmitting data signalling, the data signalling representing a plurality of data blocks, wherein a first set of data blocks of the plurality of data blocks are associated to a first Modulation and Coding Scheme, MCS, and wherein a second set of data blocks of the plurality of data blocks are associated to a second MCS, the first MCS being different from the second MCS. The transmission power for the first set of data blocks is dependent on the second MCS, and/or the transmission power for the second set of data blocks is dependent on the first MCS. The disclosure also pertains to related devices and methods.