PTRS Configuration for Multi-Layer Single-Carrier Phase Tracking

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Solution Overview

Problem

Current wireless communication systems face challenges in efficiently managing phase noise and power amplifier sharing configurations for multi-layer single-carrier communications, leading to suboptimal PTRS configurations that waste resources or fail to accurately determine phase errors in multi-layer communications.

Innovation Solution

The method involves transmitting information about power amplifier and phase noise sharing configurations to a base station, which determines a tailored PTRS configuration for each layer, optimizing PTRS placement and power boosting based on these configurations to improve resource utilization and phase error measurement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If PTRS is configured for all layers in multi-layer single-carrier communication, then phase error measurement coverage is improved, but resource overhead and system complexity increase

Engineering Contradiction:

Improvephase error measurement coverageVSAvoidPTRS configuration complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent segments the multi-layer communication into two groups: layers with phase noise sharing configured layers and layers without phase noise sharing. PTRS is selectively configured only for layers without phase noise sharing, dividing the problem into manageable segments rather than applying PTRS uniformly to all layers.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies different PTRS configuration strategies to different layers based on their specific characteristics. Layers with phase noise sharing do not require PTRS, while layers without phase noise sharing do require PTRS. This local differentiation optimizes resource usage by applying PTRS only where locally needed.

Inventive Principle:

Principle #3Local quality

2Measurement precision

If PTRS power boosting is applied to all layers, then phase error tracking accuracy is improved, but transmit power consumption increases

Engineering Contradiction:

Improvephase error tracking accuracyVSAvoidtransmit power consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The patent segments power boosting application by layer group. Power boosting is applied only to PTRS in layers without phase noise sharing configured, while no power boosting is applied to PTRS in layers with phase noise sharing. This segmentation reduces overall power consumption while maintaining necessary tracking accuracy.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent changes the power parameter dynamically based on the phase noise sharing configuration. The power boosting parameter is set to a first value for layers without phase noise sharing and a second value (lower) for layers with phase noise sharing, optimizing power usage based on actual tracking needs.

Inventive Principle:

Principle #35Parameter changes

3Ease of operation

If PTRS configuration does not consider power amplifier sharing, then configuration simplicity is maintained, but phase error measurement accuracy deteriorates

Engineering Contradiction:

Improveconfiguration simplicityVSAvoidphase error measurement accuracy

Core Design Contradiction:

Ease of operationVSMeasurement precision

Solution Approach 1:

The patent performs preliminary configuration by determining power amplifier sharing status before configuring PTRS. The network device first identifies which layers share power amplifiers, then uses this information to appropriately configure PTRS for those layers, ensuring accurate phase error measurement from the outset.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent incorporates feedback from the power amplifier sharing configuration into the PTRS configuration process. The PTRS configuration is adjusted based on the feedback information about which layers share power amplifiers, creating a closed-loop system that optimizes measurement accuracy.

Inventive Principle:

Principle #23Feedback

4Speed

If PTRS is configured without considering phase noise sharing, then configuration speed is maintained, but resource utilization efficiency decreases

Engineering Contradiction:

Improveconfiguration speedVSAvoidresource utilization efficiency

Core Design Contradiction:

SpeedVSProductivity

Solution Approach 1:

The patent segments layers into two categories based on phase noise sharing configuration. PTRS is configured only for the segment of layers without phase noise sharing, eliminating redundant PTRS configurations and improving resource utilization efficiency without significantly impacting configuration speed.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS12149464B2Phase tracking reference signal design for single-carrier waveform with multiple data layers

Publication Date: 2024.11.19 QUALCOMM INC

AI summary

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, to a base station, information indicating at least one of a power amplifier sharing configuration or a phase noise sharing configuration for a plurality of layers of a single-carrier communication. The UE may receive, from the base station, a phase tracking reference signal (PTRS) configuration for the plurality of layers based at least in part on at least one of the power amplifier sharing configuration or the phase noise sharing configuration. The UE may perform the single-carrier communication in accordance with the PTRS configuration.