Multi-TRP/Panel Uplink Control via SRS–CORESET Mapping
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional technologies fail to configure independent sounding reference signals (SRS) for different transmission reception points (TRPs) or panels, leading to limited flexibility in uplink transmission, as user equipment cannot map physical uplink shared channels (PUSCH) and physical uplink control channels (PUCCH) to different SRSs and perform independent power control on each TRP or panel.
Innovation Solution
The method involves determining a control resource set (CORESET) group index corresponding to a sounding reference signal (SRS) resource or resource set, allowing user equipment to determine transmission parameters or power control parameters based on this index, enabling independent scheduling and power control for uplink signals across different TRPs or panels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional technology is used without independent SRS configuration for different TRPs or panels, then the system structure remains simple, but the flexibility of uplink transmission is greatly limited
Solution Approach 1:
The patent segments the uplink transmission system by introducing independent SRS resource sets for different TRPs or panels. Each TRP or panel is assigned a dedicated SRS resource set, enabling independent configuration and measurement of channel conditions for each transmission point. This segmentation allows the system to achieve flexible multi-TRP/PANEL operation while maintaining manageable complexity through structured resource allocation.
Solution Approach 2:
The patent introduces a new dimension of control by mapping PUSCH and PUCCH to different SRS resource sets based on TRP or panel identification. This dimensional extension enables independent power control and transmission parameter adjustment for each TRP/PANEL by utilizing the SRS resource set as an additional control dimension, thereby enhancing uplink transmission flexibility.
2Productivity
If multiple panels are configured for uplink transmission with independent radio frequency channels, then uplink spectral efficiency is improved, but the complexity of configuring independent SRS for each panel increases
Solution Approach 1:
The patent makes the SRS resource set configuration universal by establishing a systematic mapping relationship between TRP/PANEL identification and SRS resource set selection. This universal mapping mechanism allows the same configuration framework to serve multiple panels and TRPs without requiring separate ad-hoc configuration for each, thereby reducing overall system complexity while enabling multi-panel operation for improved spectral efficiency.
Solution Approach 2:
The patent introduces TRP or panel identification information as an intermediary element that bridges the gap between multiple panels and their corresponding SRS resource sets. This intermediary mapping mechanism simplifies the configuration process by providing a clear association rule between panels and SRS resources, eliminating the need for complex direct configuration of each panel's SRS parameters.
3Reliability
If independent power control is implemented for each TRP or panel, then transmission optimization is improved, but the control mechanism complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring the mapping relationship between TRP/PANEL identification and SRS resource sets before actual transmission occurs. This preliminary mapping setup enables the system to automatically associate power control parameters with the correct TRP or panel based on the identification information, eliminating the need for complex real-time power control calculations and reducing overall mechanism complexity while maintaining transmission optimization.
Data Source
AI summary
An uplink transmission control method, comprising: determining a control resource set (CORESET) group index corresponding to a first sounding reference signal (SRS) resource or a first SRS resource set; and determining, according to the first SRS resource or the first SRS resource set, transmission parameters of a physical uplink shared channel (PUSCH) or a physical uplink control channel (PUCCH) which corresponds to the same CORESET group index as the first SRS resource or the first SRS resource set, or determining power control parameters of the first SRS resource or the first SRS resource set according to the CORESET group index. Thus, user equipment can perform independent dispatching or power control on the PUSCH/PUCCH of each TRP or panel, so that the uplink transmission control is more flexible.