Single-DCI SDM Uplink Scheduling for Multi-Panel Precoding
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Solution Overview
Problem
Existing wireless communication technologies face challenges in efficiently supporting spatial-domain multiplex based simultaneous uplink transmissions in multi-panel user equipment, particularly in managing simultaneous precoding and layer allocation for multiple antenna panels.
Innovation Solution
The implementation of single-DCI, spatial-domain multiplex (SDM) based simultaneous precoding and layer allocation strategies for multi-panel user equipment, utilizing two sets of SRI (PL) fields and aperiodic channel state information (AP-CSI) transmissions to manage simultaneous PUSCH transmissions across multiple antenna panels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If spatial-domain multiplex based simultaneous uplink transmissions are implemented in multi-panel user equipment, then data throughput is improved, but device complexity increases due to managing simultaneous precoding and layer allocation for multiple antenna panels
Solution Approach 1:
The patent segments the precoding and layer allocation management by introducing separate indicator fields (first SRI field, second SRI field, first PL field, second PL field) for each antenna panel. This allows independent configuration and control of precoding parameters for multiple panels, enabling simultaneous uplink transmissions while maintaining manageable complexity through structured division of control parameters.
Solution Approach 2:
The patent extends the control signaling dimension by adding panel-specific indicator fields to the downlink control information. Instead of using a single set of precoding indicators, the system now operates in an expanded dimension with multiple SRI and PL fields, each corresponding to specific antenna panels, thereby enabling spatial-domain multiplexing without overwhelming complexity.
2Measurement precision
If multiple indicator fields are used to schedule simultaneous PUSCH transmissions, then resource allocation precision is improved, but signaling complexity increases
Solution Approach 1:
The patent makes the downlink control information structure universal by designing it to handle both single-panel and multi-panel scenarios. The DCI format incorporates multiple SRI and PL fields that can be activated based on the transmission mode, allowing the same signaling structure to serve multiple functions: simple single-panel scheduling and complex simultaneous multi-panel scheduling, thereby reducing overall signaling complexity.
Solution Approach 2:
The patent applies local quality by providing differentiated indicator fields for different antenna panels. Each panel receives its own SRI and PL fields with appropriate precision and granularity, allowing optimized resource allocation for each panel's specific requirements while maintaining overall system efficiency through the unified DCI structure.
Data Source
AI summary
The present application relates to devices and components including apparatus, systems, and methods for supporting single downlink control information, spatial-division multiplexed simultaneous physical uplink shared channel transmissions.