HARQ Feedback Timing for Wideband Wireless Communication

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Solution Overview

Problem

Current wireless communication systems face challenges in managing high-frequency bands above 52.6 GHz, particularly in millimeter wave communication, where timing and physical properties lead to inefficiencies in HARQ feedback processing, resulting in increased processing times and complexity.

Innovation Solution

Implementing a method for wireless communication networks that uses a set of timing representations for HARQ feedback, allowing for flexible scheduling and processing of HARQ feedback based on whether it's an initial transmission or a retransmission, with separate processing times and timing indications for each, to optimize processing efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of time

If a single timing representation is used for all HARQ feedback transmissions, then the system structure is simple, but the processing time cannot be optimized for different transmission types (initial vs. retransmission)

Engineering Contradiction:

ImproveHARQ feedback processing timeVSAvoidtiming representation structure

Core Design Contradiction:

Loss of timeVSDevice complexity

Solution Approach 1:

The patent segments the timing representation into two distinct types: first timing representation for initial transmissions and second timing representation for retransmissions. This segmentation allows each transmission type to have optimized processing times, resolving the contradiction between maintaining simple structure and enabling time optimization.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system dynamically selects between different timing representations based on the transmission type. The feedback radio node determines whether a transmission is initial or retransmission and applies the appropriate timing representation, enabling adaptive processing time optimization without requiring a completely complex fixed structure.

Inventive Principle:

Principle #15Dynamics

2Productivity

If separate processing times are implemented for initial and retransmission HARQ feedback, then processing efficiency is improved, but the system complexity increases

Engineering Contradiction:

ImproveHARQ feedback processing efficiencyVSAvoidprocessing logic

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The system performs preliminary classification of the transmission type (initial or retransmission) before processing HARQ feedback. By determining the transmission type in advance, the system can apply the appropriate timing representation and processing path, improving efficiency while keeping the added complexity manageable through pre-established processing logic.

Inventive Principle:

Principle #10Preliminary action

3Adaptability or versatility

If flexible scheduling is implemented for HARQ feedback, then system adaptability is improved, but timing management complexity increases

Engineering Contradiction:

Improvescheduling flexibilityVSAvoidtiming management

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies different timing characteristics locally to different transmission types. Instead of implementing a single complex flexible scheduling system for all transmissions, the system applies specific timing representations locally to initial transmissions and retransmissions respectively, achieving adaptability while managing complexity through localized simplifications.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS11799593B2Transmission control information for wideband communication

Publication Date: 2023.10.24 TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

AI summary

There is disclosed a method of operating a feedback radio node in a wireless communication network. The method includes transmitting Hybrid Acknowledgement Repeat Request, HARQ, feedback, according to a HARQ feedback timing, the HARQ feedback timing being based on one timing representation out of a set having a first timing representation and a second timing representation. The disclosure also pertains to related devices and methods.