Uplink Transmission Using Multiple Codewords
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Solution Overview
Problem
Current 3GPP New Radio (NR) Release schemes for uplink physical uplink shared channel (PUSCH) transmission do not effectively support simultaneous transmission from multiple antenna panels, limiting reliability and throughput enhancements.
Innovation Solution
The implementation of enhanced PUSCH transmission schemes that allow for time division multiplexing, frequency division multiplexing, or space division multiplexing from multiple UE antenna panels, along with advanced beam indication and power control mechanisms, to enable simultaneous transmission to multiple transmission-reception points (TRPs).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If codebook based transmission or non-codebook based transmission is used for PUSCH, then uplink transmission is enabled, but simultaneous transmission from multiple antenna panels is not effectively supported
Solution Approach 1:
The patent divides the antenna system into multiple antenna panels, each capable of independent PUSCH transmission. This segmentation allows simultaneous transmissions from different panels to different TRPs, enabling the system to overcome blockage issues and improve reliability by transmitting through multiple spatial paths concurrently.
Solution Approach 2:
The patent introduces spatial dimension multiplexing by allowing multiple antenna panels to transmit simultaneously in the time-frequency domain. This adds a spatial dimension to the transmission, enabling multiple codewords to be transmitted across different panels, thereby increasing system versatility and reliability without compromising existing transmission modes.
2Productivity
If multiple antenna panels transmit simultaneously, then throughput and reliability are enhanced, but transmission scheme complexity increases
Solution Approach 1:
The patent designs a unified PUSCH transmission framework that supports both single-panel and multi-panel transmissions, as well as both codebook-based and non-codebook-based modes. This multi-functionality allows the system to achieve enhanced throughput through multiple antenna panels while maintaining compatibility with existing simpler transmission schemes, thereby managing complexity through universal design.
Solution Approach 2:
The patent implements dynamic transmission mode selection where the UE can be configured to use single-panel or multi-panel transmission, and the gNB can dynamically allocate resources and select transmission modes based on current channel conditions. This dynamic adaptation allows the system to optimize throughput when multi-panel transmission is beneficial while falling back to simpler single-panel modes when complexity would be unjustified, thus balancing productivity gains with complexity management.
3Reliability
If multiple codewords are transmitted from multiple panels, then channel robustness and capacity are improved, but control information and resource allocation complexity increases
Solution Approach 1:
The patent extracts and separates the control information for different antenna panels and codewords into distinct fields within the Downlink Control Information (DCI). Each panel and codeword has dedicated control parameters, allowing the gNB to independently manage and signal resource allocation, precoding, and modulation for each transmission path. This extraction reduces the complexity of multi-panel control by organizing information in a structured, panel-specific manner rather than requiring complex unified control signals.
Data Source
AI summary
Systems, apparatuses, methods, and computer-readable media are provided for simultaneous uplink transmission from a user equipment (UE) using multiple antenna panels and/or targeting multiple transmission-reception points (TRPs). For example, techniques for codebook-based and/or non-codebook based transmission from multiple antenna panels are described. Embodiments further include techniques for codebook subset configuration. Furthermore, embodiments include techniques for power control and/or power sharing for transmissions from a UE to multiple TRPs. Other embodiments may be described or claimed.