Terminal Panel Control via Dual SRI Fields for MTRP PUSCH
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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, which can lead to deteriorated 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 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 introduced in downlink control information for 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 SRI fields (first SRI field and second SRI field), where each field independently indicates a Sounding Reference Signal resource for a specific panel. This segmentation allows the terminal to determine different panels (first panel and second panel) for codebook-based uplink transmission to different TRPs, thereby improving communication throughput and quality while maintaining manageable processing complexity through structured organization
Solution Approach 2:
The patent introduces a new dimension in control information structure by adding multiple SRI fields to indicate different SRS resources for different panels. This dimensional expansion in the control information space enables simultaneous configuration of multiple uplink transmission paths (one per panel) within a single downlink control information message, resolving the contradiction between throughput improvement and complexity management
2Reliability
If multiple SRI fields are introduced in downlink control information for codebook-based uplink transmission with multiple panels, then communication quality is improved, but downlink control information size increases
Solution Approach 1:
The control information is divided into multiple functional segments (first SRI field and second SRI field), each serving a specific panel's uplink transmission configuration. This segmentation enables precise control over each panel's transmission parameters without requiring excessive overhead, as each segment is optimized for its specific purpose of indicating SRS resource for a particular panel
Solution Approach 2:
The patent changes the parameter structure of downlink control information by introducing multiple SRI fields with specific functionalities. Each SRI field contains parameters necessary for configuring uplink transmission on a specific panel, allowing the system to achieve improved communication quality through multi-panel diversity while controlling information overhead by only including essential parameters for each panel's configuration
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 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.