UE Uplink Power Adjustment for Multi-Waveform NR Coverage

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Solution Overview

Problem

Existing wireless communication systems face challenges in managing uplink power control due to the introduction of multiple waveforms with varying Peak to Average Power Ratio (PAPR) and Cubic Metric (CM), leading to increased power consumption and reduced coverage when using different waveforms in New Radio (NR) systems.

Innovation Solution

A method for power adjustment in User Equipment (UE) and base stations that considers the impact of different waveforms on Peak to Average Power Ratio (PAPR) and Cubic Metric (CM), allowing for flexible configuration of uplink transmission power to optimize power consumption and coverage by associating upper and lower bounds with target waveforms.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple waveforms with different PAPR/CM are used in NR system, then waveform diversity and adaptability are improved, but power consumption increases and coverage performance deteriorates

Engineering Contradiction:

Improvewaveform diversityVSAvoidpower consumption

Core Design Contradiction:

Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The patent changes the power control parameters by introducing waveform-specific PAPR/CM compensation. Different waveforms (CP-OFDM, DFT-S-OFDM, etc.) have different PAPR/CM characteristics, and the system adjusts the uplink transmission power based on the specific waveform being used. This allows the system to maintain adaptability across multiple waveforms while optimizing power consumption for each waveform type.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent implements dynamic power adjustment based on waveform selection. The base station determines the target waveform and dynamically configures the power control parameters accordingly. This dynamic approach allows the system to adapt power consumption to the specific requirements of each waveform, preventing unnecessary power waste while maintaining coverage performance.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If multiple waveforms with different PAPR/CM are used in NR system, then waveform diversity and adaptability are improved, but coverage performance decreases

Engineering Contradiction:

Improvewaveform diversityVSAvoidcoverage performance

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent introduces waveform-specific power control parameters that account for the different PAPR/CM characteristics of various waveforms. By adjusting the power control parameters based on the selected waveform (CP-OFDM, DFT-S-OFDM, etc.), the system compensates for the coverage performance degradation that would otherwise result from using multiple waveforms with different characteristics.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The base station determines the target waveform and provides feedback to the UE about the appropriate power control parameters. This feedback mechanism ensures that the UE transmits with the correct power level for the selected waveform, maintaining coverage performance while supporting waveform diversity.

Inventive Principle:

Principle #23Feedback

3Device complexity

If existing uplink power control mechanism is reused without waveform consideration, then system complexity is reduced, but power consumption increases and coverage performance deteriorates

Engineering Contradiction:

Improvepower control mechanism complexityVSAvoidpower consumption

Core Design Contradiction:

Device complexityVSUse of energy by moving object

Solution Approach 1:

The patent extends the existing power control mechanism by adding waveform-specific dynamic adjustment. Rather than completely redesigning the power control system, it dynamically adapts existing parameters based on the selected waveform. This approach increases complexity only slightly while achieving significant power consumption optimization.

Inventive Principle:

Principle #15Dynamics

4Device complexity

If existing uplink power control mechanism is reused without waveform consideration, then system complexity is reduced, but coverage performance deteriorates

Engineering Contradiction:

Improvepower control mechanism complexityVSAvoidcoverage performance

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent modifies the existing power control parameters by introducing waveform-specific adjustments. Instead of creating a completely new power control mechanism, it changes the parameters used in the existing mechanism to account for different waveform characteristics. This approach maintains relatively low system complexity while improving coverage performance.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS12574274B2Method and device in UE and base station for transmitting power adjustment

Publication Date: 2026.03.10 APOGEE 5G GLOBAL LLC

AI summary

The present disclosure provides a method and a User Equipment (UE) supporting transmission power adjustment. The UE receiving a first signaling; and transmitting a first radio signal; wherein, a first modulation symbol sequence is used to generate the first radio signal, the first modulation symbol sequence employs a target waveform, a first bit block is used to generate the first modulation symbol sequence, the first signaling is used to determine the target waveform out of X waveforms, the X is a positive integer greater than or equal to 2, a transmitting power of the first radio signal is a first power, the target waveform is used to determine an upper bound of the first power. The method can adjust the UE transmitting power according to the waveform of the uplink transmission, thus reducing the power loss of the UE or improving the coverage performance of the uplink transmission.