Wireless Device Downlink Power Adjustment Feedback

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Solution Overview

Problem

Existing wireless communication systems face challenges in efficiently managing power and interference, particularly in full-duplex operations where self-interference and cross-link interference can occur, leading to suboptimal performance and increased latency in reporting and configuring interference mitigation.

Innovation Solution

A method where a wireless communication device can rapidly and flexibly request a downlink transmission power adjustment from a network node based on detected interference, allowing the network node to adjust transmission powers to minimize interference, thereby improving communication efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional interference mitigation methods are used, then interference can be reduced, but latency in reporting and configuring mitigation increases

Engineering Contradiction:

Improveinterference mitigation effectivenessVSAvoidlatency in reporting and configuring mitigation

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent implements a feedback mechanism where the receiving device sends a power adjustment request to the transmitting device based on detected interference. This feedback loop enables real-time adaptation of transmission power to minimize interference, directly addressing the latency issue by establishing a rapid response mechanism between communicating devices

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The transmission power is made dynamic rather than static. The system continuously monitors interference conditions and adjusts power levels in real-time based on the feedback received. This dynamic adjustment capability allows the system to adapt to changing interference conditions without the latency associated with traditional configuration-based approaches

Inventive Principle:

Principle #15Dynamics

2Reliability

If downlink transmission power is increased to improve signal strength, then communication reliability improves, but self-interference and cross-link interference increase

Engineering Contradiction:

Improvesignal decoding success rateVSAvoidself-interference and cross-link interference

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent changes the transmission power parameter dynamically based on detected interference conditions. Instead of using a fixed high power level, the system adjusts the power parameter in response to feedback about interference levels, achieving an optimal balance between signal strength and interference generation

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The receiving device provides feedback about detected interference to the transmitting device. This feedback enables the transmitting device to adjust its power level, creating a closed-loop control system that automatically balances signal strength and interference generation based on real-time conditions

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS12273819B2Wireless device feedback of desired downlink power adjustment

Publication Date: 2025.04.08 QUALCOMM INC

AI summary

A network node may output downlink communication for a UE. The UE may receive the downlink communication from the network node. The UE may transmit, to the network node, a request for a first downlink transmission power adjustment for the downlink communication from the network node to the UE. The network node may obtain the request from the UE for the first downlink transmission power adjustment for the downlink communication from the network node to the first UE.