Uplink Channel Conflict Processing via Partial Transmission Cancellation

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Solution Overview

Problem

In 5G new radio (NR) networks, when multiple uplink transmission channels of the same user equipment (UE) overlap in time, the direct cancellation of low-priority uplink channels reduces their transmission efficiency, particularly for control signaling like HARQ-ACK PUCCH.

Innovation Solution

A method and apparatus for channel conflict processing that determines the start position for transmission cancellation of low-priority uplink channels, allowing only the overlapping transmission resources to be canceled, thereby improving transmission efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the uplink transmission on the low-priority uplink transmission channel is canceled in whole or in part, then the high-priority uplink transmission can be ensured, but the uplink transmission efficiency of the low-priority uplink transmission channel is reduced

Engineering Contradiction:

Improvehigh-priority uplink transmission reliabilityVSAvoidlow-priority uplink transmission efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent segments the low-priority uplink channel transmission into two parts: the non-overlapping portion is transmitted normally, while only the overlapping portion with the high-priority channel is canceled. This segmentation allows partial transmission rather than complete cancellation, thereby improving low-priority channel efficiency while still ensuring high-priority transmission reliability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies local quality by differentiating the treatment of different time resources. The non-overlapping time resources of the low-priority channel are preserved for transmission, while only the specific overlapping time resources are canceled. This localized approach ensures that cancellation is applied only where necessary, maintaining overall transmission efficiency.

Inventive Principle:

Principle #3Local quality

2Device complexity

If the uplink transmission on the low-priority uplink transmission channel is canceled, then the channel conflict with high-priority channel is resolved, but the downlink data corresponding to the HARQ-ACK needs to be repeated

Engineering Contradiction:

Improvechannel conflict resolutionVSAvoiddownlink data repetition delay

Core Design Contradiction:

Device complexityVSLoss of time

Solution Approach 1:

The patent applies partial action by canceling only the overlapping portion of the low-priority channel transmission rather than the entire transmission. This partial cancellation resolves the channel conflict sufficiently while preserving the non-overlapping portion, thereby avoiding the need for complete repetition of downlink data and reducing time loss.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS12213167B2Channel conflict processing method and apparatus, device, and storage medium

Publication Date: 2025.01.28 ZTE CORP

AI summary

Provided are a channel conflict processing method and apparatus, a device, and a storage medium. The channel conflict processing method includes: in the case where a transmission resource on a high-priority uplink channel of a UE and a transmission resource on a low-priority uplink channel of the UE overlap in time domain, determining the start position for transmission cancellation of the low-priority uplink channel; and canceling the transmission resource on the low-priority uplink channel according to the start position for transmission cancellation.