UE Uplink Power Control Across Cell Groups to Limit Interference
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing transmission power control, scheduling requests, and uplink control information transmission, particularly in advanced communication systems like 5G/NR, to meet diverse application requirements and improve network performance.
Innovation Solution
A method and apparatus for determining and managing transmission power in a UE and base station by configuring power limits for different cell groups and computing total power based on maximum power and power control formulas, ensuring efficient power allocation across multiple cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If transmission power is increased to support higher data rates, then data rate is improved, but interference to other cells increases
Solution Approach 1:
The patent segments the transmission power control by dividing cells into different groups (first group of cells and second group of cells) with different maximum power limits (PCMAX,max1 and PCMAX,max2). This allows differential power control where cells can be assigned different power levels based on their specific requirements, enabling higher data rates in certain cells while limiting interference in others.
Solution Approach 2:
The patent applies local quality by assigning different power control parameters to different cell groups. Each cell group has its own specific maximum power limit and power control formula, allowing optimized power levels for different local conditions and requirements rather than applying a uniform power control approach across all cells.
2Productivity
If power control formulas are applied to each cell group, then power control efficiency is improved, but system complexity increases
Solution Approach 1:
The patent segments the power control mechanism into separate formulas for different cell groups. Each cell group has its own power control formula (first power control formula for first group, second power control formula for second group), which simplifies the control logic for each group while maintaining overall system efficiency through differentiated management.
3Adaptability or versatility
If multiple power limits are configured for different cell groups, then adaptability to diverse applications is improved, but configuration complexity increases
Solution Approach 1:
The patent segments the configuration into distinct parameters for different cell groups, including separate maximum power limits (PCMAX,max1, PCMAX,max2), separate power control formulas, and separate beta offsets. This segmentation allows each cell group to be independently configured for specific application requirements while maintaining a structured and manageable configuration framework.
Solution Approach 2:
The patent applies local quality by enabling different power control characteristics for different cell groups based on their specific application requirements. Each cell group can have customized power limits and control parameters tailored to its local conditions and service requirements, enhancing system adaptability.
Data Source
AI summary
A method for a user equipment (UE) determined a total power for transmissions in a cell group (CG) or a power for transmission of a channel or signal in a cell of a CG. The method comprises receiving configuration information for first and second CGs and for first and second maximum total powers for transmissions in the first and second CGs and determining first and second total powers for transmissions in the first and second CGs, respectively. The method also comprises receiving configuration information for a set of values for one or more parameters used to determine a power for transmission of a channel or signal in a cell of a CG and an indication for a value for each parameter from the one or more parameters.