PUCCH Cell Switching With Group Power Control for Uplink Reliability

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Solution Overview

Problem

Existing wireless communication systems face challenges in efficiently managing uplink control channel switching, particularly in scenarios involving multiple cell groups, leading to suboptimal resource utilization and performance degradation.

Innovation Solution

Implementing a mechanism for group power control and PUCCH (Physical Uplink Control Channel) carrier switching to optimize the transmission of uplink control channels across different cell groups, enhancing flexibility and efficiency in resource allocation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If PUCCH carrier switching is implemented across multiple cell groups, then uplink control channel transmission performance is improved, but device complexity and control overhead increase

Engineering Contradiction:

Improveuplink control channel transmission performanceVSAvoidpower control mechanism complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent divides the cell group into multiple PUCCH groups, where each group can independently perform power control and carrier switching operations. This segmentation allows the system to manage complexity by handling smaller, independent units rather than managing all cells globally, thus improving control channel performance while keeping the power control mechanism manageable.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements dynamic power control where the network can independently adjust power control parameters for different PUCCH groups and cells. This dynamic adjustment capability allows the system to adapt to changing channel conditions and traffic patterns, improving transmission performance while maintaining flexible control overhead management.

Inventive Principle:

Principle #15Dynamics

2Productivity

If independent power control is applied to each PUCCH group, then resource utilization efficiency is improved, but control signaling overhead increases

Engineering Contradiction:

Improveresource utilization efficiencyVSAvoidcontrol signaling overhead

Core Design Contradiction:

ProductivityVSLoss of information

Solution Approach 1:

The patent combines power control parameters for multiple PUCCH groups into a unified configuration structure that can be transmitted efficiently. By merging common parameters and using shared configuration elements, the system achieves independent power control for each group while minimizing the total control signaling overhead through parameter reuse and compact representation.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS20250338229A1Group Power Control with PUCCH Cell Switching

Publication Date: 2025.10.30 PANPSY TECHNOLOGIES LLC

AI summary

A wireless device may receive configuration parameters indicating positions of a first TPC command and a second TPC command that are applicable, respectively, to a first cell of a PUCCH group and a second cell of the PUCCH group. The wireless device may transmit uplink control information via a PUCCH with a transmission power that is based on the first TPC command in case the first cell is a cell for PUCCH transmission in a transmission timing and is based on the second TPC command in case the second cell is the cell for PUCCH transmission in the transmission timing.