Semi-Static PUCCH Resource Scheduling for Uplink Pattern Conflicts

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Solution Overview

Problem

The transmission quality of uplink control information (PUCCH) is deteriorated due to conflicts with uplink/downlink patterns, leading to reduced coverage enhancement and frequency-utilization efficiency in 5G mobile communication systems.

Innovation Solution

A terminal configures multiple transmission occasions for uplink control information within a unit time duration, allowing flexible reconfiguration of PUCCH resources to avoid conflicts with uplink/downlink patterns, thereby improving transmission quality and efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If PUCCH transmission is performed according to fixed uplink/downlink patterns, then frequency-utilization efficiency is maintained, but transmission quality deteriorates due to conflicts with uplink control information

Engineering Contradiction:

Improvetransmission qualityVSAvoidfrequency-utilization efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent applies dynamics by making the PUCCH transmission pattern flexible and adaptable rather than fixed. The terminal determines transmission occasions dynamically based on whether the occasion is an uplink or downlink slot, allowing the system to adapt to varying channel conditions and traffic patterns while avoiding conflicts that would degrade transmission quality

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the transmission parameter (transmission occasion selection) based on the uplink/downlink pattern configuration. By modifying which slots are used for PUCCH transmission according to the pattern type (first pattern with all uplink slots or second pattern with alternating uplink/downlink slots), the system optimizes both transmission quality and frequency utilization

Inventive Principle:

Principle #35Parameter changes

2Reliability

If repeated transmission is performed in all available slots, then coverage enhancement is improved, but conflicts with downlink patterns increase causing resource waste

Engineering Contradiction:

Improvecoverage enhancementVSAvoidresource waste

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The patent segments the repeated transmission into distinct transmission occasions corresponding to different uplink slots within the time domain. By dividing the repetition across multiple separated uplink slots rather than continuous transmission, the system achieves coverage enhancement while avoiding downlink slots to prevent resource waste

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent performs preliminary determination of transmission occasions based on the uplink/downlink pattern before actual PUCCH transmission. The terminal identifies which slots are suitable for transmission in advance, ensuring that repeated transmissions only occur in uplink slots and never conflict with downlink patterns

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12609852B2Terminal and communication method using semi-static physical uplink control channel (PUCCH) resource configuration

Publication Date: 2026.04.21 PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA

AI summary

This terminal is provided with a control circuit for setting a plurality of transmission opportunities with respect to a unit time interval corresponding to a scheduling unit, and a transmit circuit for performing repetitive transmission of uplink control information in the plurality of transmission opportunities.