PTRS Port Precoder Determination via SRS Resource Mapping
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Solution Overview
Problem
Current wireless communication systems face challenges in determining an effective precoder for Phase Tracking Reference Signal (PTRS) ports, particularly in interpreting downlink control information signaling for accurate phase tracking and precoding.
Innovation Solution
The method involves determining a precoder for each PTRS port based on downlink control information signaling, which includes interpreting radio resource control signaling configurations and sounding reference signal resource indications to establish precise precoding for transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If downlink control information signaling is used to determine precoder for PTRS ports, then phase tracking accuracy is improved, but interpretation complexity of RRC signaling and SRS resource indications increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring RRC signaling parameters and SRS resource indications before actual PTRS transmission. The RRC signaling预先 establishes the mapping relationships and precoder configurations, so that when downlink control information arrives, the UE can directly apply the pre-configured parameters without complex real-time interpretation, thus reducing signaling complexity while maintaining phase tracking accuracy
Solution Approach 2:
The patent uses SRS resource indications as an intermediary between RRC signaling and actual PTRS precoding. The downlink control information contains SRS resource indicators that point to pre-configured SRS resources, which in turn reference the precoder configurations. This intermediary layer simplifies the direct mapping relationship and reduces the interpretation burden on the UE
2Reliability
If precise precoding is established for each PTRS port, then signal quality is improved, but processing overhead increases
Solution Approach 1:
The patent segments the precoding process by associating each PTRS port with specific SRS resources and precoder configurations. Instead of processing all PTRS ports uniformly, the system divides them into groups based on their associated SRS resources, allowing parallel processing and reducing overall processing overhead while maintaining precise precoding for each port
Solution Approach 2:
The patent uses copying by reusing precoder configurations from SRS resources for PTRS ports. Instead of determining new precoders for each PTRS port, the system copies the precoder settings from the associated SRS resources, significantly reducing processing overhead while ensuring consistent signal quality through precise precoding
Data Source
AI summary
Apparatuses, methods, and systems are disclosed for determining a precoder for PTRS ports. One method (800) includes receiving (802) information indicating a precoder for transmission. The method (800) includes determining (804) a precoder for each phase tracking reference signal port based on the information. Another method (900) includes transmitting (902) information indicating a precoder for transmission. The method (900) includes receiving (904) one or more phase tracking reference signal ports precoded with the precoder.