Uneven PTRS Block Configuration for High-Frequency Phase Noise

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Solution Overview

Problem

The existing phase noise estimation methods in high-frequency scenarios, such as those below 52.6 G, are inadequate, leading to inaccurate phase noise estimation and increased residual phase noise, especially in low-cost devices with poor performance, while also requiring lower peak-to-average power ratio (PAPR) for efficient signal transmission.

Innovation Solution

The method involves unevenly configuring at least two phase tracking reference signal (PTRS) blocks in the time domain symbol, with each block containing multiple PTRSs, and sending these configured PTRSs to a second node, ensuring phase noise suppression without affecting spectral efficiency or increasing PAPR.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If PTRS blocks are evenly configured in time domain, then spectral efficiency is maintained, but phase noise estimation accuracy deteriorates in high-frequency scenarios

Engineering Contradiction:

Improvephase noise estimation accuracyVSAvoidadaptability to high-frequency scenarios

Core Design Contradiction:

Measurement precisionVSAdaptability or versatility

Solution Approach 1:

The patent applies asymmetry by unevenly configuring PTRS blocks in the time domain, specifically placing more PTRS blocks at the beginning and end of the time domain symbol rather than distributing them uniformly. This asymmetric distribution better captures the phase noise characteristics in high-frequency scenarios, improving estimation accuracy while maintaining spectral efficiency.

Inventive Principle:

Principle #4Asymmetry

2Reliability

If more PTRS blocks are configured to improve phase noise estimation, then phase noise suppression improves, but PAPR increases

Engineering Contradiction:

Improvephase noise suppression performanceVSAvoidpeak-to-average power ratio

Core Design Contradiction:

ReliabilityVSPower

Solution Approach 1:

The patent applies local quality by concentrating PTRS blocks at specific critical positions (beginning and end of time domain symbols) where phase noise impact is most significant, rather than uniformly distributing them. This localized approach improves phase noise suppression performance while minimizing the overall PAPR increase, as the additional PTRS blocks are placed only where most needed.

Inventive Principle:

Principle #3Local quality

3Measurement precision

If existing PTRS configuration methods are used, then device complexity remains low, but phase noise estimation accuracy deteriorates in high-frequency scenarios

Engineering Contradiction:

Improvephase noise estimation accuracyVSAvoidsignal configuration complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent applies parameter changes by modifying the time domain position parameters of PTRS blocks, specifically changing from uniform distribution to uneven distribution with concentrated blocks at critical positions. This parameter modification improves phase noise estimation accuracy in high-frequency scenarios while maintaining relatively simple device implementation, as it only requires changing the configuration parameters rather than the fundamental signal processing architecture.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS12549303B2Signal configuration method, apparatus and device, and storage medium

Publication Date: 2026.02.10 ZTE CORP

AI summary

Provided are a signal configuration method, apparatus, device, and a storage medium. The method includes unevenly configuring at least two phase tracking reference signal (PTRS) blocks in a time domain symbol, where each PTRS block includes one or more PTRSs; and sending the configured PTRS blocks to a second node.