Single-SRS Scheduling for Dual-Panel SDM PUSCH Transmission
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently supporting simultaneous transmission of multiple physical uplink shared channels (PUSCHs) using multiple UE panels, particularly in 5G NR systems, due to limitations in SRS resource configurations and scheduling methods.
Innovation Solution
The implementation of an exclusive SRS resource set configured for codebook-based or non-codebook-based simultaneous PUSCH transmissions, utilizing various mapping strategies and signaling mechanisms to facilitate simultaneous PUSCH transmissions across multiple UE panels, including beamforming, power control, and precoding matrix indicators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple SRS resource sets are configured for simultaneous PUSCH transmissions, then the capability for spatial division multiplexing is improved, but the device complexity and configuration overhead increase
Solution Approach 1:
The patent combines multiple SRS resource sets into a single unified SRS resource set that can support both codebook-based and non-codebook-based simultaneous PUSCH transmissions. This merging approach maintains the adaptability for multiple transmission modes while reducing the complexity of managing separate resource sets, as the single resource set is configured with parameters that accommodate both operation types.
Solution Approach 2:
The SRS resource set is designed with universal functionality to support both codebook-based and non-codebook-based PUSCH transmissions simultaneously. By configuring the resource set with multi-functional parameters (such as allowing both usage types and configuring multiple panels), the system achieves versatility without requiring separate dedicated resource sets for each transmission mode, thereby reducing overall configuration complexity.
2Device complexity
If single SRS resource set is used for both codebook-based and non-codebook-based PUSCH operations, then the configuration overhead is reduced, but the scheduling and resource management becomes more difficult
Solution Approach 1:
The patent segments the single SRS resource set into distinct panels, where each panel can be independently configured for specific PUSCH operations. This segmentation allows the network to manage different transmission modes (codebook-based and non-codebook-based) within separate panels, simplifying the scheduling and resource management while maintaining the benefit of a single unified resource set configuration.
Solution Approach 2:
The system dynamically assigns and configures panels within the SRS resource set based on transmission requirements. The network can flexibly activate or deactivate specific panels for codebook-based or non-codebook-based operations as needed, making the resource management adaptable and easier to control despite using a single unified resource set structure.
Data Source
AI summary
Systems and methods for single downlink control information (DCI) based simultaneous physical uplink shared channel (PUSCH) transmission with spatial division multiplexing (SDM) using a sounding reference signal (SRS) resource set are disclosed herein. The SRS resource set may be an exclusive (e.g., single) SRS resource set for either a non-codebook-based or a codebook-based simultaneous physical uplink shared channel (PUSCH) operation. In each case, a user equipment (UE) transmits the SRS resource(s) of the SRS resource set, receives a DCI from the network that schedules a first PUSCH transmission on a first UE panel and a simultaneous second PUSCH transmission on a second UE panel, and then transmits the (simultaneous) PUSCH transmissions as scheduled. Related network-side functionality is also discussed. In cases, SRS resources (and/or one or more SRS ports used by the SRS resource) are mapped to a particular UE panel. In other cases, SRS resources use both UE panels.