PT-RS Configuration Based on MCS and Carrier Frequency
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Solution Overview
Problem
In wireless communication systems, especially at higher carrier frequencies, phase noise-induced errors and inter-carrier interference pose significant challenges for reliable data transmission, particularly in 5G New Radio (NR) technology.
Innovation Solution
The introduction of Phase Tracking Reference Signals (PT-RS) helps mitigate phase noise-induced common phase errors and inter-carrier interference by providing adaptive phase correction based on Modulation and Coding Scheme (MCS) and carrier frequency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If PT-RS is configured for all transmission scenarios, then phase noise compensation is maximized, but signaling overhead and resource consumption increase
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting PT-RS configuration based on transmission parameters such as MCS (Modulation and Coding Scheme) and carrier frequency. The system changes the PT-RS configuration parameters (presence, density, pattern) according to the specific transmission conditions, thereby providing phase noise compensation only when and where needed, reducing unnecessary overhead while maintaining reliability.
Solution Approach 2:
The patent implements dynamics by making the PT-RS configuration adaptive rather than static. The configuration is dynamically adjusted based on real-time transmission parameters including MCS index and carrier frequency. This allows the system to optimize the balance between phase noise compensation effectiveness and signaling overhead for each specific transmission scenario.
2Measurement precision
If PT-RS density is increased, then phase tracking accuracy improves, but resource consumption and overhead increase
Solution Approach 1:
The patent changes the PT-RS density parameter based on transmission conditions. For higher carrier frequencies and higher MCS indices, the system increases PT-RS density to improve phase tracking accuracy. Conversely, for lower frequency and MCS conditions, the density is reduced, thereby optimizing the balance between measurement precision and resource consumption.
Solution Approach 2:
The patent applies local quality by providing different PT-RS densities in different resource grids based on local transmission conditions. Each resource grid can have its own PT-RS configuration tailored to the specific MCS and carrier frequency of that grid, allowing high density where needed and low density where sufficient, optimizing both accuracy and resource usage.
3Productivity
If PT-RS configuration is made adaptive based on MCS and carrier frequency, then resource efficiency improves, but configuration complexity increases
Solution Approach 1:
The patent uses parameter changes by establishing clear mapping relationships between transmission parameters (MCS index, carrier frequency) and PT-RS configuration parameters. This systematic approach allows adaptive configuration that optimizes resource efficiency while keeping the complexity manageable through standardized parameter mappings and decision criteria.
Data Source
AI summary
There is disclosed a transmitting node for a Radio Access Network, the transmitting node being adapted for transmitting, based on one or more transmission parameters, of reference signaling, and/or signaling including reference signaling, wherein the reference signaling may comprise phase tracking reference signaling and wherein the one or more transmission parameters comprise a Modulation and Coding Scheme (MCS).