HARQ Process Identifier Mapping for Sidelink Transmission

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Solution Overview

Problem

In wireless communication systems, particularly in sidelink transmission, there is no effective solution to determine the hybrid automatic repeat request (HARQ) process identifier when a terminal device has multiple HARQ processes, leading to conflicts and data scheduling/transmission errors.

Innovation Solution

A method for determining hybrid automatic repeat request process information, where a first terminal device uses a first HARQ process identifier indicated by a network device to determine a second HARQ process identifier for sidelink transmission, resolving conflicts by identifying unused or terminated HARQ processes based on usage and service quality parameters.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a terminal device has multiple HARQ processes, then the transmission reliability is improved, but the HARQ process identifier determination becomes complex and conflicts arise

Engineering Contradiction:

Improvetransmission reliabilityVSAvoidHARQ process identifier determination complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent introduces a mapping relationship as an intermediary between the first HARQ process identifier (indicated by network device) and the second HARQ process identifier (used in sidelink transmission). This mapping relationship acts as a mediator that resolves the conflict between multiple HARQ processes, allowing the terminal device to correctly determine the appropriate identifier without increasing operational complexity.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Productivity

If multiple HARQ processes are used, then data transmission capability is enhanced, but identifier conflicts cause scheduling errors

Engineering Contradiction:

Improvedata transmission capabilityVSAvoiddata scheduling accuracy

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The mapping relationship serves as an intermediary that ensures accurate data scheduling by correctly translating between different HARQ process identifier systems. This prevents scheduling errors while maintaining enhanced data transmission capability through multiple HARQ processes.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent establishes a feedback mechanism where the terminal device determines the second HARQ process identifier based on the first HARQ process identifier and the mapping relationship. This feedback loop ensures that identifier conflicts are resolved and scheduling accuracy is maintained while utilizing multiple HARQ processes for improved productivity.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS20220322421A1Method for determining hybrid automatic repeat request process information, device, and storage medium

Publication Date: 2022.10.06 GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD

AI summary

Disclosed is a method for determining hybrid automatic repeat request process information. The method comprises: a first terminal device determining, according to a first hybrid automatic repeat request (HARQ) process identifier indicated by a network device, a second HARQ process identifier corresponding to a sidelink transmission. Further disclosed are a terminal device and a storage medium.