PUCCH NC-JT Transmission for Lower Panel Synchronization
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Solution Overview
Problem
In the New Radio (NR) system, ensuring balanced service quality and reducing signaling overhead at the cell edge is challenging, particularly with the increasing frequency bands and the need for dense access point deployment.
Innovation Solution
The proposed solution involves a PUCCH transmission method where multiple antenna panels of a terminal perform non-coherent-joint transmission (NC-JT) based on frequency division multiplexing (FDM), with different antenna panels corresponding to different transmission configuration indications (TCIs).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple antenna panels perform simultaneous uplink transmission, then throughput and transmission efficiency are improved, but synchronization requirements and system complexity increase
Solution Approach 1:
The patent divides the uplink transmission into separate frequency resources for different antenna panels. Each panel transmits on dedicated frequency resources, eliminating the need for precise synchronization between panels while maintaining high throughput through parallel transmission.
Solution Approach 2:
The patent transitions from time-domain synchronization (requiring precise timing alignment) to frequency-domain separation. By allocating different frequency resources to different antenna panels, the system achieves parallel transmission without stringent synchronization requirements.
2Area of stationary object
If dense deployment of access points is implemented, then network coverage is improved, but signaling overhead and system complexity increase
Solution Approach 1:
The patent combines multiple antenna panels at the terminal side to transmit to multiple TRPs simultaneously. This merging approach allows the terminal to serve multiple access points with a unified transmission mechanism, reducing the signaling overhead that would otherwise be required to coordinate separate transmissions to each TRP.
Solution Approach 2:
The patent creates a universal transmission framework where multiple antenna panels can simultaneously serve multiple TRPs using the same NC-JT mechanism. This multi-functional approach eliminates the need for separate signaling procedures for each TRP- terminal link, thereby reducing overall signaling overhead.
3Reliability
If coordinated multiple point transmission is performed, then transmission reliability is improved, but synchronization requirements increase
Solution Approach 1:
The patent segments the coordinated transmission into frequency-separated channels for different antenna panels. Each panel transmits independently on its allocated frequency resources to different TRPs, maintaining transmission reliability through diversity while eliminating complex inter-panel synchronization requirements.
Solution Approach 2:
The patent uses frequency division multiplexing as an intermediary mechanism to coordinate multiple antenna panel transmissions. This frequency-based mediation allows independent panel operations without direct synchronization, while still achieving coordinated multiple point transmission for improved reliability.
Data Source
AI summary
Embodiments of the present disclosure provide a PUCCH transmission method and apparatus, a communication device, and a storage medium. The PUCCH transmission method is executed by a terminal and comprises: according to a transmission configuration indicator (TCI), a plurality of antenna panels of the terminal perform non-coherent joint transmission (NC-JT) of a PUCCH on the basis of frequency-division multiplexing (FDM), different antenna panels corresponding to different TCIs.