PUCCH Serving Cell Configuration for Accurate HARQ-ACK
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Solution Overview
Problem
There is a need for improved methods and devices to transmit uplink control information and receive semi-persistent scheduling PDSCH in wireless communication systems, particularly in 3GPP NR systems, to enhance data transmission efficiency and address resource limitations.
Innovation Solution
A user equipment (UE) is configured to transmit a physical uplink control channel (PUCCH) based on carrier aggregation, utilizing information on a PUCCH serving cell, which includes parameters for setting the PUCCH serving cell, such as subcarrier spacing and time division duplex configuration, to ensure correct transmission of uplink control information and HARQ-ACK for SPS PDSCH.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If dynamic TDD is used to vary the number of OFDM symbols according to data traffic directions, then data transmission efficiency is improved, but slot configuration complexity increases
Solution Approach 1:
The patent implements dynamic TDD by allowing the base station to vary the number of downlink and uplink OFDM symbols in each slot according to real-time data traffic directions. The slot configuration is dynamically adjusted through RRC signaling, enabling the system to adapt between different traffic scenarios (downlink-heavy, uplink-heavy, or balanced) without requiring separate static configurations for each case.
2Length of stationary object
If beamforming and massive MIMO technologies are used to alleviate path loss in mmWave band, then transmission distance is increased, but device complexity increases
Solution Approach 1:
The patent combines beamforming and massive MIMO technologies to address path loss in the mmWave band. By merging these two techniques, the system achieves both beam directional gain and spatial multiplexing benefits, extending transmission distance while managing complexity through integrated implementation rather than separate systems.
Solution Approach 2:
The patent employs universal slot configuration methods that work across different deployment scenarios including beamforming and massive MIMO. The RRC signaling mechanism provides a unified approach for configuring slot structures regardless of whether beamforming or massive MIMO is being used, reducing the need for scenario-specific configuration complexity.
Data Source
AI summary
The present specification relates to a method, a device, and a system for transmitting a physical uplink control channel in a wireless communication system. The present specification discloses a terminal comprising: a communication module for receiving, from a base station, information on a PUCCH serving cell corresponding to a serving cell on which a PUCCH is to be transmitted, generating the PUCCH, and transmitting the generated PUCCH on the PUCCH serving cell; and a processor for configuring the PUCCH serving cell on the basis of the information on the PUCCH serving cell. The terminal can effectively transmit uplink control information.