Terminal Panel Control for STRP MTRP PUSCH Transmission
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Solution Overview
Problem
Current radio communication systems face challenges in appropriately configuring and controlling the transmission of Physical Uplink Shared Channel (PUSCH) with multiple transmission/reception points (TRPs), particularly for user equipment (UE) with multiple panels, leading to potential deterioration in communication throughput and quality.
Innovation Solution
A terminal and radio communication method that includes a receiving section for downlink control information with sounding reference signal (SRS) resource indicators, allowing for non-codebook-based uplink transmission control using specific panels determined by the SRS resource indicators, enabling appropriate STRP/MTRP PUSCH transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple SRI fields are used for non-codebook-based uplink transmission with multiple panels, then communication throughput and quality are improved, but downlink control information size and processing complexity increase
Solution Approach 1:
The downlink control information is segmented into multiple independent SRI fields (first SRI field and second SRI field), where each field corresponds to a specific panel. This segmentation allows the terminal to independently determine and control transmission parameters for each panel, enabling efficient multi-panel uplink transmission while maintaining organized and manageable control information structure.
2Measurement precision
If panel determination is performed based on SRI fields, then uplink transmission control precision is improved, but control signaling overhead increases
Solution Approach 1:
Different SRI fields are assigned to different panels based on their specific transmission characteristics and requirements. Each SRI field contains panel-specific spatial relation information that is locally optimized for that particular panel's transmission needs, enabling precise control of each panel while avoiding unnecessary overhead in other panels' control information.
Data Source
AI summary
Appropriately performing STRP/MTRP PUSCH transmission. A terminal according to one aspect of the present disclosure includes a receiving section that receives downlink control information including a first sounding reference signal (SRS) resource indicator (SRI) field and a second SRI field, and a control section that performs control to perform non-codebook-based uplink transmission scheduled by the downlink control information by using a first panel determined on the basis of the first SRI field and a second panel determined on the basis of the second SRI field.