Adaptive PTRS Resource Configuration for 5G Phase Noise
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The inflexible configuration of phase-tracking reference signals in 5G NR communication systems leads to excessive signal overhead, degrading spectrum efficiency due to phase noise, especially in high-frequency bands.
Innovation Solution
Configure time and frequency domain resources for phase-tracking reference signals based on reference information such as phase-noise single-side-band power spectrum density, modulation and coding scheme, sub-carrier interval, and communication waveform to optimize resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If phase-tracking reference signal is configured with fixed consecutive resources in time domain and fixed density in frequency domain, then phase-tracking performance is excellent, but signal overhead is extensive and spectrum efficiency is poor
Solution Approach 1:
The patent applies dynamics by making the PTRS configuration adaptive rather than fixed. The time domain density and frequency domain density are dynamically adjusted based on phase noise characteristics, allowing the system to optimize between phase-tracking performance and spectrum efficiency according to actual conditions.
Solution Approach 2:
The patent changes key parameters including time domain density (Delta_t), frequency domain density (Delta_f), and resource element offset (delta) based on phase noise characteristics. These parameter adjustments allow the system to reduce signal overhead while maintaining adequate phase-tracking performance by matching PTRS density to actual phase noise conditions.
2Reliability
If PTRS density is increased to improve phase-tracking performance, then phase noise compensation is better, but spectrum efficiency deteriorates due to excessive overhead
Solution Approach 1:
The patent adjusts PTRS density parameters (time domain density Delta_t and frequency domain density Delta_f) based on measured phase noise characteristics. When phase noise is severe, higher density is applied; when phase noise is mild, lower density is used, optimizing the balance between compensation performance and spectrum efficiency.
Solution Approach 2:
The patent applies different PTRS densities in different time and frequency locations based on local phase noise characteristics. This allows concentrated phase-tracking resources to be deployed where needed while reducing overhead in regions with better phase stability, achieving local optimization of the contradiction.
Data Source
Figure 1~2-2
Figure 3~4
AI summary
A signal configuration method, device and storage medium are provided. The method includes: acquiring at least one type of reference information, wherein the reference information is used to characterize a configuration status of a communication network; and configuring time domain and/or frequency domain resources for a phase-tracking reference signal based on the at least one type of reference information, and obtaining configuration information of the time domain and/or frequency domain resources for the phase-tracking reference signal, wherein the configuration information includes a density or a pattern corresponding to the time domain and/or frequency domain resources.