PUCCH Slot-Based Parameter Selection for Full-Duplex Uplink
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing uplink transmission in full-duplex systems, particularly in 5G/NR networks, due to the need for simultaneous transmission and reception, which can lead to interference and reduced efficiency.
Innovation Solution
The implementation of a method and apparatus that differentiate between slots for PUCCH transmission based on whether they allow for simultaneous transmission and reception, using separate sets of parameters for slots with and without time-domain resources for simultaneous operations, enabling optimized uplink transmission in full-duplex systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If separate PUCCH parameter sets are configured for full-duplex and half-duplex slots, then uplink transmission efficiency is improved, but device complexity increases
Solution Approach 1:
The patent segments the set of slots into two distinct subsets: a first subset for half-duplex operation and a second subset for full-duplex operation. Each subset is associated with separate PUCCH parameter sets, allowing independent optimization for each operational mode while managing complexity through structured division
Solution Approach 2:
The patent implements dynamic selection of PUCCH parameters based on the operational mode. The UE determines whether to apply the first or second PUCCH parameter set based on whether the current slot is identified as a full-duplex or half-duplex slot, enabling adaptive optimization without permanent complexity overhead
2Productivity
If full-duplex operation is enabled, then spectral efficiency is improved, but interference increases
Solution Approach 1:
The patent applies different PUCCH parameters locally to different slot types. By configuring separate parameter sets tailored to full-duplex and half-duplex characteristics, the system optimizes performance for each operational mode while managing interference through mode-specific parameter selection
Solution Approach 2:
The patent converts the potential harm of full-duplex interference into a benefit by implementing interference-aware parameter selection. The separate PUCCH parameter sets for full-duplex slots are specifically designed to account for and mitigate interference effects, transforming the interference challenge into an opportunity for optimized performance
Data Source
AI summary
Apparatuses and methods for uplink transmission in full-duplex systems. A method of operating a user equipment (UE) includes receiving first information for a first set of parameters of a physical uplink control channel (PUCCH) associated with a first subset of slots from a set of slots on a cell and second information for a second set of parameters of the PUCCH associated with a second subset of slots from the set of slots on the cell. The method further includes determining, based on whether a slot is from the first subset of slots or the second subset of slots, a set of PUCCH parameters from the first and second sets of parameters and transmitting, based on the set of PUCCH parameters, the PUCCH in the slot on the cell. Slots from the first subset of slots do not include time-domain resources indicated for simultaneous transmissions and receptions on the cell. Slots from the second subset of slots include time-domain resources indicated for simultaneous transmission and reception on the cell.