Acknowledgement Signaling Puncturing Rate-Matching 5G

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Solution Overview

Problem

In wireless communication systems, particularly in 5G networks, the flexible and dynamic HARQ feedback mechanisms lead to increased signaling overhead, which is undesirable and can result in decoding and demodulation failures if the wrong method is selected for acknowledgement signaling, such as puncturing or rate-matching.

Innovation Solution

A method and device for efficiently managing acknowledgement signaling by transmitting it on resources allocated for data signaling, where the acknowledgement signaling is punctured or rate-matched based on specific rate-matching conditions, allowing for reliable transmission and reducing resource intensity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If flexible and dynamic HARQ feedback is provided, then acknowledgement signaling reliability is improved, but signaling overhead increases

Engineering Contradiction:

Improveacknowledgement signaling reliabilityVSAvoidsignaling overhead

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The patent combines acknowledgement signaling with data signaling by transmitting both on the same PUSCH resources. The acknowledgement signaling is multiplexed with uplink data, allowing simultaneous transmission of both signal types using shared time-frequency resources, thereby reducing overall signaling overhead while maintaining reliability

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The PUSCH resources are designed to serve dual purposes: carrying both acknowledgement signaling (HARQ feedback) and uplink data signaling. This multi-functional use of resources eliminates the need for separate dedicated resources for acknowledgement signaling, reducing total resource consumption while supporting flexible HARQ feedback mechanisms

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Use of energy by moving object

If puncturing method is used for acknowledgement signaling, then resource intensity is reduced, but data signaling reliability deteriorates

Engineering Contradiction:

Improveresource intensityVSAvoiddata signaling reliability

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The patent implements dynamic selection between puncturing and rate-matching methods based on real-time rate-matching conditions. The wireless device and network node evaluate conditions such as payload size, channel quality, and resource availability to dynamically determine the optimal transmission method, allowing resource intensity to be reduced when appropriate while maintaining data signaling reliability when needed

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the transmission method parameter (puncturing vs. rate-matching) based on evaluated rate-matching conditions. By adjusting this parameter dynamically according to channel state and resource conditions, the system optimizes the balance between resource intensity and data signaling reliability for each transmission instance

Inventive Principle:

Principle #35Parameter changes

3Reliability

If rate-matching method is used for acknowledgement signaling, then data signaling reliability is improved, but resource intensity increases

Engineering Contradiction:

Improvedata signaling reliabilityVSAvoidresource intensity

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The system dynamically switches between rate-matching and puncturing methods based on evaluated conditions. Rate-matching is applied when channel conditions warrant the additional reliability, while puncturing is used when resource conservation is prioritized, optimizing the trade-off between reliability and resource intensity in real-time

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The transmission method parameter is adjusted based on rate-matching conditions including payload size and channel quality. When rate-matching is selected, the system allocates resources to ensure reliable data transmission, while accepting higher resource intensity as a trade-off for improved reliability under specific conditions

Inventive Principle:

Principle #35Parameter changes

4Quantity of substance

If acknowledgement signaling is transmitted on data signaling resources, then signaling overhead is reduced, but decoding reliability may deteriorate

Engineering Contradiction:

Improvesignaling overheadVSAvoiddecoding reliability

Core Design Contradiction:

Quantity of substanceVSReliability

Solution Approach 1:

The patent merges acknowledgement signaling and data signaling into the same PUSCH transmission resources. By multiplexing these signal types together with proper resource allocation and rate-matching, the system reduces signaling overhead while maintaining decoding reliability through careful design of the multiplexing scheme and error protection mechanisms

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS20220109521A1Acknowledgement signaling for radio access networks

Publication Date: 2022.04.07 TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

AI summary

There is disclosed a method of operating a wireless device in a radio access network. The method includes transmitting acknowledgement signaling and data signaling on resources allocated to data signaling, wherein the acknowledgement signaling is punctured or rate-matched based on at least one rate-matching condition. The disclosure also pertains to related devices and methods.