Feedback Signaling Format Selection for Accurate 5G Multiplexed Decoding

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Solution Overview

Problem

Existing communication systems face challenges in handling feedback signaling, particularly in 5G networks, due to variability in size and timing, leading to ambiguity and performance loss in data transmission when multiplexed with other signals.

Innovation Solution

A method and system for selecting and indicating a control information format for feedback signaling, using format indications to determine whether to puncture or rate-match control information based on size thresholds and modulation schemes, ensuring coherent understanding between user equipment and network nodes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If feedback signaling is multiplexed with data transmission in parallel, then spectrum utilization is improved, but ambiguity and performance loss occur due to variability in size and timing

Engineering Contradiction:

Improvespectrum utilizationVSAvoiddecoding accuracy

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The feedback signaling is segmented into different formats (first feedback format and second feedback format) with distinct structures. The first format includes a first set of bits while the second format includes a second set of bits, allowing the receiver to differentiate and accurately decode based on the indicated format, thereby resolving ambiguity while maintaining multiplexing benefits

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A format indication is introduced as an intermediary element that specifies which feedback format is being transmitted. This indication acts as a mediator between the variable feedback content and the fixed decoding mechanism, enabling reliable decoding across different feedback scenarios without sacrificing spectrum efficiency

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If multiple control information formats are used to handle variable feedback size, then adaptability is improved, but device complexity increases

Engineering Contradiction:

Improvefeedback size adaptabilityVSAvoidformat selection complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system changes the parameter of control information format based on feedback size requirements. By selecting between predefined formats (first feedback format with first set of bits, second feedback format with second set of bits), the system adapts to variable feedback sizes without requiring complex dynamic formatting, thus maintaining simplicity while achieving versatility

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS12500688B2Feedback signaling format selection

Publication Date: 2025.12.16 TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

AI summary

There is disclosed a method of operating a user equipment in a radio access network. The method includes transmitting control information utilizing a control information format, the control information format being selected from a plurality of different control information formats based on a format indication. The disclosure also pertains to related devices and methods.