DM-RS Pattern Configuration for Throughput and Antenna Port Balance
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Solution Overview
Problem
The existing wireless communication systems face challenges in supporting high data traffic, increased transmission rates, and low latency while managing DM-RS overhead, which affects throughput and resource efficiency.
Innovation Solution
The method involves configuring different DM-RS patterns based on single-user or multi-user transmissions, reducing DM-RS density in the frequency domain to support more antenna ports and optimize DM-RS patterns for improved throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a dense DM-RS pattern is used to support multi-user transmission, then channel estimation accuracy is improved, but overhead increases and throughput decreases
Solution Approach 1:
The patent applies dynamics by making the DM-RS pattern configurable and adaptable based on transmission type. The system dynamically selects between a first DM-RS pattern for SU-MIMO and a second DM-RS pattern for MU-MIMO, allowing the DM-RS density to be optimized for each specific transmission scenario rather than using a fixed dense pattern for all cases.
Solution Approach 2:
The patent applies local quality by configuring different DM-RS patterns for different transmission types. The first DM-RS pattern with higher density is applied locally to SU-MIMO transmissions where channel estimation accuracy is critical, while the second DM-RS pattern with lower density is applied locally to MU-MIMO transmissions where overhead reduction is more important, thus optimizing performance for each local context.
2Productivity
If DM-RS overhead is reduced to improve throughput, then data transmission efficiency increases, but the number of supported antenna ports decreases
Solution Approach 1:
The patent applies dynamics by implementing a configurable DM-RS pattern selection mechanism that adapts to different transmission types. The system can dynamically choose between two patterns: one optimized for supporting more antenna ports (first pattern) and another optimized for reducing overhead and improving throughput (second pattern), allowing flexibility to meet different operational requirements.
Solution Approach 2:
The patent applies parameter changes by modifying the DM-RS pattern parameters (density, resource element allocation) based on the transmission type. The configuration information includes parameters that define the DM-RS pattern, allowing the system to change these parameters to optimize the balance between overhead reduction and antenna port support capability for different scenarios.
3Device complexity
If a single DM-RS pattern is used for all transmission types, then system complexity is reduced, but performance optimization for specific transmission types is lost
Solution Approach 1:
The patent applies dynamics by implementing a dynamic DM-RS pattern selection mechanism that adapts to the transmission type. The base station determines the appropriate pattern based on whether SU-MIMO or MU-MIMO is being used and configures the corresponding pattern to the UE, allowing the system to optimize performance for each transmission type while maintaining manageable complexity through automated selection.
Solution Approach 2:
The patent applies universality by designing a unified DM-RS configuration framework that handles both SU-MIMO and MU-MIMO transmission types. The configuration information structure and pattern selection mechanism are designed to be universal, supporting multiple transmission types through a single configurable system rather than requiring separate dedicated configurations for each type.
Data Source
AI summary
A method and a device for transmitting/receiving a demodulation reference signal in a wireless communication system are disclosed. A method for receiving a demodulation reference signal (DM-RS) according to an embodiment of the present disclosure may include the steps of: receiving configuration information related to a DM-RS from a base station; receiving a downlink control information (DCI) for scheduling a physical downlink control channel (PDSCH) from the base station; and receiving the PDSCH and a MD-RS for the PDSCH, based on the DCI.