Overlapping PUCCH-PUSCH Uplink Scheduling Under Layer Port Limits

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Solution Overview

Problem

Existing wireless communication systems face challenges in efficiently managing overlapping physical uplink control channel (PUCCH) and physical uplink shared channel (PUSCH) transmissions, particularly when the scheduled quantity of layers or antenna ports exceeds the maximum configured limits.

Innovation Solution

A user equipment (UE) and network entity communicate control signaling to manage overlapping PUCCH and PUSCH transmissions by indicating a maximum quantity of layers or antenna ports, allowing simultaneous transmission if within limits, or reducing or dropping transmissions if exceeding limits, and multiplexing content as needed.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the scheduled quantity of layers or antenna ports for overlapping PUCCH and PUSCH transmissions exceeds the maximum configured limits, then transmission flexibility and resource utilization are improved, but system reliability and compliance with configuration constraints deteriorate

Engineering Contradiction:

Improvetransmission flexibilityVSAvoidcompliance with configuration constraints

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent implements dynamic adjustment of transmission parameters by comparing scheduled layers/ports against maximum configured limits. When overlaps are detected, the system dynamically reduces the quantity of layers or antenna ports to comply with configuration constraints, ensuring reliable operation while maintaining transmission flexibility through adaptive parameter modification.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes transmission parameters (quantity of layers, antenna ports) based on detected overlaps between PUCCH and PUSCH transmissions. By modifying these parameters to satisfy maximum configured limits, the system resolves the contradiction between maintaining flexible resource utilization and ensuring compliance with configuration constraints.

Inventive Principle:

Principle #35Parameter changes

2Productivity

If simultaneous PUCCH and PUSCH transmissions are allowed when within layer/port limits, then communication efficiency and resource utilization are improved, but complexity of managing overlapping transmissions increases

Engineering Contradiction:

Improvecommunication efficiencyVSAvoidcomplexity of managing overlapping transmissions

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent performs preliminary detection of overlaps between PUCCH and PUSCH transmissions before executing simultaneous transmission. By identifying potential conflicts in advance and comparing scheduled parameters against maximum limits, the system enables efficient simultaneous transmissions when safe, while avoiding complexity of real-time conflict resolution during transmission.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements feedback mechanisms to monitor layer and antenna port quantities during overlapping transmissions. This feedback enables the system to maintain communication efficiency by allowing simultaneous transmissions when within limits, while automatically triggering parameter adjustments when constraints are approached, managing complexity through automated monitoring and control.

Inventive Principle:

Principle #23Feedback

3Reliability

If the quantity of layers or antenna ports is reduced to meet maximum configured limits, then compliance with configuration constraints is improved, but transmission capacity and data rate deteriorate

Engineering Contradiction:

Improvecompliance with configuration constraintsVSAvoidtransmission capacity

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent applies partial action by reducing the quantity of layers or antenna ports only to the extent necessary to meet maximum configured limits during overlapping transmissions. This selective reduction maintains compliance with constraints while preserving maximum transmission capacity, avoiding unnecessary degradation of data rate by only adjusting parameters when and where needed.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS12495414B2Overlapping physical uplink control channel and physical uplink shared channel transmissions

Publication Date: 2025.12.09 QUALCOMM INC

AI summary

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive control signaling scheduling a physical uplink control channel (PUCCH) transmission and a physical uplink shared channel (PUSCH) transmission that overlap in the time domain. The UE may simultaneously transmit the PUSCH and PUCCH transmissions if the scheduled quantity of layers for the PUSCH transmission (or the scheduled quantity of layers for the PUSCH transmission and the PUCCH transmission) does not exceed an indicated maximum quantity of layers for PUSCH transmissions (or PUSCH and PUCCH transmissions). For a codebook based PUSCH transmission, the UE may simultaneously transmit the PUSCH and PUCCH transmissions if the scheduled quantity of antenna ports for the PUSCH transmission (or the scheduled quantity of antenna ports for the PUSCH transmission and the PUCCH transmission) does not exceed an indicated maximum quantity of ports for PUSCH transmissions (or PUSCH and PUCCH transmissions).