Multi-Panel PUCCH Signaling Using FDM and SDM Beams
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently transmitting physical uplink control channels (PUCCH) using multiple antenna panels, particularly in scenarios involving beam repetition and resource allocation, which can lead to inefficiencies in payload capacity and reliability.
Innovation Solution
Implementing control signaling for transmitting PUCCH using multiple antenna panels in frequency division multiplexing (FDM) and spatial division multiplexing (SDM) manners, along with hybrid schemes, to optimize resource allocation and enhance reliability and capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam repetition is used for PUCCH transmission, then reliability is improved, but payload capacity deteriorates due to resource allocation inefficiencies
Solution Approach 1:
The PUCCH transmission is segmented across multiple antenna panels, with each panel transmitting a portion of the control information. This segmentation allows the system to achieve diversity gain for reliability while optimizing resource allocation for each segment, thereby maintaining payload capacity.
Solution Approach 2:
The patent introduces spatial dimension by utilizing multiple antenna panels for PUCCH transmission. Instead of repeating transmissions in the time domain only, the system exploits the spatial dimension to transmit diverse copies of PUCCH across different panels, improving reliability without proportionally increasing time resources and preserving payload capacity.
2Quantity of substance
If multiple antenna panels are used for PUCCH transmission, then payload capacity is improved, but device complexity worsens
Solution Approach 1:
The base station performs preliminary configuration of multiple antenna panels before PUCCH transmission. By pre-configuring the antenna panels and their associated resources, the system enables high payload capacity transmission while reducing the operational complexity during actual PUCCH transmission, as the complex setup is completed in advance.
3Ease of operation
If resource allocation is optimized for single antenna PUCCH, then ease of operation is improved, but reliability deteriorates in diverse wireless environments
Solution Approach 1:
The patent creates a universal resource allocation framework that works across single antenna and multiple antenna panel scenarios. The same resource allocation mechanisms and signaling procedures are designed to be applicable whether one antenna panel or multiple panels are used, maintaining ease of operation while enabling reliability improvements through multi-panel transmission when needed.
Data Source
AI summary
A user equipment (UE) includes a transceiver and a processor. The processor is configured to receive, from a base station, via the transceiver, an indication of a physical uplink control channel (PUCCH) transmission scheme. The PUCCH transmission scheme indicates that different PUCCHs are to be transmitted in at least one of a frequency division multiplexing (FDM) manner or a spatial division multiplexing (SDM) manner using multiple beams. The multiple beams are formed by two or more antenna panels in the set of antenna panels. The processor is also configured to determine the different PUCCHs to be transmitted based at least in part on the indication of the PUCCH transmission scheme, and transmit the different PUCCHs, via the transceiver, using the PUCCH transmission scheme.