UE A-MPR Settings for Unlicensed Uplink Power Control

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Solution Overview

Problem

Existing 3GPP LTE and NR systems face challenges in managing Maximum Power Reduction (MPR) for unlicensed band power class 3 terminals, particularly in scenarios requiring reduced power output without compromising communication quality.

Innovation Solution

Proposes A-MPR values tailored for unlicensed band power class 3 terminals to manage transmission power effectively, ensuring compliance with regulatory limits while maintaining communication performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Power

If maximum output power requirements are applied to unlicensed band power class 3 terminals, then transmission power can be increased, but communication quality deteriorates due to excessive power reduction

Engineering Contradiction:

Improvetransmission powerVSAvoidcommunication quality

Core Design Contradiction:

PowerVSReliability

Solution Approach 1:

The patent introduces A-MPR values as specific parameter adjustments to the maximum power reduction settings. By defining different A-MPR values (e.g., 0 dB, 3 dB, 6 dB) based on terminal capabilities and channel conditions, the system optimizes transmission power parameters to prevent excessive power reduction while maintaining communication quality in unlicensed bands.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If transmission power is increased to improve communication quality, then reliability improves, but regulatory compliance deteriorates due to exceeding power limits

Engineering Contradiction:

Improvecommunication qualityVSAvoidregulatory compliance

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent implements dynamic power management through A-MPR values that adapt to different operating conditions. The system dynamically adjusts transmission power within regulatory limits by applying appropriate A-MPR values based on terminal power class, channel bandwidth, and environmental conditions, ensuring both compliance and communication quality.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

By introducing A-MPR as a controllable parameter, the system can precisely adjust transmission power to meet regulatory requirements. The A-MPR values are specifically designed to ensure power output remains within legal limits while optimizing communication performance for different scenarios.

Inventive Principle:

Principle #35Parameter changes

3Reliability

If A-MPR values are optimized for communication quality, then reliability improves, but device complexity increases due to additional power management mechanisms

Engineering Contradiction:

Improvecommunication qualityVSAvoidpower management complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies A-MPR values selectively based on specific conditions rather than universally. The system uses partial action by applying A-MPR only when needed (e.g., for power class 3 terminals in unlicensed bands with specific channel bandwidths), avoiding unnecessary complexity in scenarios where simple power class limits suffice.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS20260107238A1Maximum power reduction

Publication Date: 2026.04.16 LG ELECTRONICS INC

AI summary

One disclosure of the present specification provides a user equipment (UE). The UE comprises: a transceiver for transmitting/receiving a signal; and a processor for controlling the transceiver, wherein the UE is a power class 3 UE, the transceiver is configured to satisfy A-MPR, the transceiver transmits an uplink signal to a base station, and the A-MPR is based on pre-coding, modulation method, channel bandwidth and RB allocation method.