PUCCH Transmission Reliability in Multi-TRP Systems
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Solution Overview
Problem
Existing technologies face challenges in improving the reliability of uplink control channel transmission in Multi-TRP or Multi-Panel scenarios, particularly in 5G mobile communications systems.
Innovation Solution
The proposed solution involves acquiring physical uplink control channel (PUCCH) parameters and performing slot repetition transmissions based on these parameters, which are configured by higher-layer signaling. This includes using spatial relation information groups and frequency hopping transmission parameters, with each piece of spatial relation information corresponding to a set of power control parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If slot repetition transmission is performed using Multi-TRP or Multi-Panel technology, then transmission reliability is improved, but system complexity increases due to multiple spatial relation information groups and power control parameters
Solution Approach 1:
The patent segments the spatial relation information into multiple groups (first spatial relation information group and second spatial relation information group), where each group contains specific spatial relation information corresponding to different TRPs or panels. This segmentation allows the system to manage complexity by organizing parameters into structured groups rather than handling them as a single complex set.
Solution Approach 2:
The patent dynamically selects which spatial relation information group to use based on the repetition slot index. When the repetition slot index is even, the first spatial relation information group is used; when odd, the second group is used. This dynamic selection mechanism allows the system to adaptively switch between different parameter sets, managing complexity through time-varying configuration rather than static complex setup.
2Reliability
If multiple spatial relation information groups are configured for different TRPs or panels, then beam management is optimized, but the difficulty of detecting and measuring parameters increases
Solution Approach 1:
The patent implements periodic switching between the first and second spatial relation information groups based on the repetition slot index. The system alternates between groups in a periodic manner (even slots use first group, odd slots use second group), which simplifies detection and measurement by creating a predictable, rhythmic pattern rather than requiring simultaneous monitoring of multiple complex parameter sets.
Solution Approach 2:
Each spatial relation information group is configured with specific local characteristics appropriate for particular TRPs or panels. The first group contains spatial relation information optimized for certain transmission points, while the second group contains information optimized for others. This local optimization allows each group to be relatively simple and easy to detect, while the overall system achieves comprehensive beam management coverage.
Data Source
AI summary
A transmission method and apparatus, a device, and a non-transitory computer-readable storage medium are disclosed. The method may include: acquiring a physical uplink control channel (PUCCH) parameter, and performing at least one PUCCH repetition transmission according to the PUCCH parameter, where the parameter is configured by higher-layer signaling, and comprises at least one of: a plurality of spatial relation information groups, or a frequency hopping transmission parameter, each piece of spatial relation information corresponding to a set of power control parameters.