PT-RS and DMRS Port Association Configuration for Multi-TRP 5G
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Solution Overview
Problem
In the 5G NR system, configuring the association relationships between Phase Tracking Reference Signals (PT-RS) and Demodulation Reference Signals (DMRS) ports for multi-TRP scenarios is challenging, affecting the trade-off between DCI overhead and PT-RS performance, and limiting scheduling flexibility and overall system performance.
Innovation Solution
A method and apparatus for configuring the association relationships between PT-RS and DMRS ports using first information sent or received by terminal and network devices, which indicates port association relationships corresponding to multiple Transmit-Receive Points (TRPs), allowing for flexible scheduling and optimal system performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If port association relationships for multi-TRP are configured using traditional single-TRP methods, then the configuration is simple, but the scheduling flexibility and system performance are limited
Solution Approach 1:
The patent segments the port association configuration by introducing separate indication fields for different TRPs. The first indication field configures port associations for a first TRP, while the second indication field configures port associations for a second TRP. This segmentation allows independent optimization of port associations for each TRP, thereby improving scheduling flexibility without overwhelming complexity.
Solution Approach 2:
The patent extends the port association configuration from a single-TRP dimension to a multi-TRP dimension by adding indication fields that specifically target different TRPs. This dimensional extension allows the system to handle multiple transmission points simultaneously, improving adaptability and versatility while managing complexity through structured field organization.
2Reliability
If more detailed port association information is provided for multi-TRP, then PT-RS performance improves, but DCI overhead increases
Solution Approach 1:
The patent makes the indication fields universal by designing them to handle both single-TRP and multi-TRP scenarios. The first and second indication fields can independently configure port associations, allowing the same mechanism to serve multiple TRPs without requiring additional specialized fields. This multi-functionality improves PT-RS performance across multiple TRPs while avoiding excessive DCI overhead.
Solution Approach 2:
The patent changes the parameters of the indication fields to optimize the balance between PT-RS performance and DCI overhead. By configuring the number of bits and structure of the first and second indication fields according to specific implementation requirements, the system can adjust the level of detail in port association information to achieve optimal PT-RS performance while controlling DCI overhead within acceptable limits.
Data Source
AI summary
The present application relates to the field of mobile communications. Disclosed are a method and apparatus for configuring a reference signal, and a device and a storage medium. The method includes: receiving, by a terminal device, first information sent by a network device, wherein the first information is used for indicating port association relationships corresponding to two Transmit-Receive Points (TRPs), and the port association relationship is used for reflecting an association relationship between a first reference signal port and a second reference signal.