SRS Port Configuration for Multi-Panel PUSCH Transmission
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently transmitting physical uplink shared channels (PUSCHs) across multiple panels with shared ports, leading to suboptimal signal reliability and resource utilization due to limitations in configuring sounding reference signal (SRS) ports and precoding matrices.
Innovation Solution
The method involves configuring at least first and second SRS resource sets for codebook-based PUSCH transmissions and signaling for simultaneous transmission across multiple panels, allowing the UE to transmit PUSCHs using specific subsets of SRS ports associated with each resource set, thereby optimizing the use of digital ports and improving signal reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple SRS resource sets are configured for simultaneous transmission across multiple panels, then signal reliability is improved, but the complexity of configuring and managing SRS ports increases
Solution Approach 1:
The patent divides the SRS resource configuration into multiple separate SRS resource sets, where each set is associated with a specific panel. This segmentation allows the system to manage complexity by treating each panel's resources independently while maintaining overall reliability through diversified transmission paths across multiple panels.
2Productivity
If subsets of SRS ports are allocated to different panels, then resource utilization efficiency is improved, but the difficulty of port management and signaling increases
Solution Approach 1:
The patent applies local quality by allocating specific subsets of SRS ports to specific panels based on their capabilities and channel conditions. Each panel receives a tailored configuration of ports optimized for its local characteristics, improving overall resource utilization while the standardized allocation rules keep management complexity manageable.
3Quantity of substance
If uplink ports are shared across multiple panels, then the number of available ports is increased, but the risk of interference and resource conflicts increases
Solution Approach 1:
The patent resolves port conflicts by introducing a spatial dimension through multiple panels. Instead of sharing ports within a single panel (which causes interference), the system distributes port usage across multiple spatially separated panels, allowing the same port indices to be used simultaneously without interference by associating them with different physical panels.
Data Source
AI summary
A method that may be performed by a user equipment (UE) includes receiving, from a network entity, a configuration of at least first and second SRS resource sets for codebook-based PUSCH transmissions; receiving, from the network entity, signaling scheduling the UE for simultaneous transmission of at least one PUSCH using uplink ports shared across multiple panels of the UE, wherein the signaling indicates a first set of PUSCH ports corresponding to a subset of SRS ports associated with SRS resources in the first SRS resource set and a second set of PUSCH ports corresponding to a subset of SRS ports associated with SRS resources in the second SRS resource set; and transmitting the at least one PUSCH via a first panel of the UE using the first set of PUSCH ports and via a second panel of the UE using the second set of PUSCH ports.