Dynamic DMRS Pattern Configuration for Wireless Data Transmission
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Solution Overview
Problem
Current wireless communication networks face inefficiencies in demodulation reference signal (DMRS) transmissions due to the use of static DMRS patterns that do not account for varying deployment characteristics, leading to suboptimal DMRS transmission and reduced data transmission rates.
Innovation Solution
The method involves determining and transmitting distinct DMRS patterns based on deployment characteristics such as timeline parameters, redundancy versions, transmission ranks, channel conditions, and multi-user MIMO layers, allowing for adaptive DMRS transmission configurations that optimize data transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If static DMRS patterns are used for data transmission, then the system complexity is reduced and ease of operation is improved, but the data transmission rate and resource utilization deteriorate due to inability to adapt to varying deployment characteristics
Solution Approach 1:
The patent applies dynamics by transitioning from static DMRS patterns to dynamic DMRS patterns that can be selected based on current deployment characteristics. The network entity determines appropriate DMRS patterns from a plurality of patterns according to specific deployment characteristics (timeline parameters, redundancy versions, transmission ranks, channel conditions, MU-MIMO layers), allowing the system to adapt DMRS configuration dynamically to optimize data transmission rate while managing complexity through standardized selection criteria
Solution Approach 2:
The patent implements parameter changes by varying DMRS pattern parameters (time-frequency resource locations, resource element positions) based on deployment characteristics. Different DMRS patterns are selected and configured by modifying key parameters such as pattern type, density, and resource allocation according to channel conditions, transmission requirements, and network configuration, thereby improving productivity through parameter optimization
2Adaptability or versatility
If distinct DMRS patterns are determined based on multiple deployment characteristics, then the adaptability and resource utilization are improved, but the device complexity and configuration overhead increase
Solution Approach 1:
The patent applies local quality by selecting specific DMRS patterns tailored to local deployment characteristics and conditions. Different DMRS patterns are chosen for different local contexts (specific channel conditions, particular transmission ranks, specific MU-MIMO layer configurations), ensuring that each local situation receives optimized DMRS configuration rather than a uniform approach, thereby improving adaptability while maintaining manageable complexity through context-specific selection
Solution Approach 2:
The patent implements dynamics in the pattern determination process by enabling the network entity to dynamically select from multiple DMRS patterns based on current deployment characteristics. The system transitions from fixed pattern assignment to dynamic pattern selection that responds to changing conditions, improving adaptability while the standardized selection methodology keeps determination complexity manageable
Data Source
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AI summary
Methods and apparatuses for demodulation reference signal (DMRS) transmission are described. At a user equipment (UE), a method and apparatus may include receiving, from a network entity, a transmission configuration indication including a DMRS pattern for configuring DMRS transmission on a communication channel. The method and apparatus further includes transmitting or receiving a DMRS to or from the network entity on the channel in accordance with the DMRS pattern. At a network entity, a method and apparatus may include transmitting, to a UE, a transmission configuration indication including a DMRS pattern for configuring DMRS transmission on a communication channel. The method and apparatus further includes transmitting or receiving a DMRS to or from the UE on the channel in accordance with the DMRS pattern.