Wireless Feedback Mode Switching for Lower 5G Signaling Overhead

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Solution Overview

Problem

Current 5G communication systems face challenges in dynamically updating feedback modes to adapt to changing network conditions and transmission types, leading to unnecessary signaling overhead and inefficiencies.

Innovation Solution

Techniques for dynamically signaling and updating feedback modes, including ACK, NACK, and disabled feedback modes, are implemented to ensure appropriate feedback reporting while minimizing signaling overhead.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If feedback modes are dynamically updated to adapt to changing network conditions, then adaptability is improved, but signaling overhead increases

Engineering Contradiction:

Improvefeedback mode adaptabilityVSAvoidsignaling overhead

Core Design Contradiction:

Adaptability or versatilityVSLoss of energy

Solution Approach 1:

The patent implements dynamic feedback mode switching that allows the system to transition between different feedback modes (ACK-only, NACK-only, HARQ-ACK) based on real-time network conditions and transmission types. This dynamic adaptation enables the system to optimize performance for different scenarios while managing signaling overhead through mode-specific configurations.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes the feedback mode parameter based on network conditions and transmission characteristics. By modifying the feedback mode parameter (ACK-only, NACK-only, HARQ-ACK) rather than using static configurations, the system adapts to varying network conditions while controlling signaling overhead through parameter-driven behavior changes.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If feedback is always provided to ensure reliable transmission, then reliability is improved, but signaling overhead increases

Engineering Contradiction:

Improvetransmission reliabilityVSAvoidsignaling overhead

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The patent applies partial feedback mechanisms where only necessary feedback is transmitted based on transmission conditions. Instead of always providing full feedback, the system uses ACK-only mode for successful transmissions and NACK-only mode for error cases, reducing unnecessary signaling while maintaining reliability where needed.

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

The system implements intelligent feedback mechanisms that selectively provide feedback based on transmission outcomes and network conditions. The feedback mechanism adapts its behavior dynamically, providing feedback only when necessary (NACK-only for errors, ACK-only for successes) rather than continuously, thus reducing overhead while maintaining reliability.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS12609802B2Dynamic signaling of feedback modes

Publication Date: 2026.04.21 ZTE CORP

AI summary

Methods, apparatus, and systems that enable dynamic signaling of various feedback modes are disclosed. In one example aspect, a method for wireless communication includes transmitting, by a base station, a message to a terminal device configuring the terminal device to operate in a feedback mode and performing a transmission with the terminal device according to the feedback mode.