DMRS Bundling Window Determination for 5G Uplink
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Solution Overview
Problem
The traditional DMRS pattern is inadequate for multi-slot transmission in 5G NR systems, as it fails to determine an optimal DMRS bundling window size, leading to suboptimal uplink channel transmission performance and coverage range.
Innovation Solution
A method and apparatus for determining a DMRS bundling window size based on configurations from a network side device or predefined rules agreed between the network side device and the terminal, allowing for optimal DMRS transmission patterns across multiple slots.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional DMRS pattern is used for multi-slot transmission, then implementation is simple, but transmission performance and coverage range are suboptimal
Solution Approach 1:
The patent segments the multi-slot transmission into multiple DMRS bundling windows, where each window contains one or more slots with DMRS transmissions. This segmentation allows the system to optimize DMRS placement within each window while maintaining manageable complexity through standardized window determination rules based on transport block size and slot configuration.
Solution Approach 2:
The patent introduces dynamic DMRS bundling window size adaptation based on transport block size and slot configuration. The bundling window size is determined dynamically rather than being fixed, allowing the system to adapt to different transmission scenarios and optimize performance for varying data sizes and channel conditions.
2Measurement precision
If DMRS bundling window size is not determined, then implementation is simple, but channel estimation accuracy and coverage range are insufficient
Solution Approach 1:
The patent establishes preliminary rules for determining DMRS bundling window size based on transport block size and slot configuration before actual transmission occurs. These predetermined rules enable the terminal to quickly determine the appropriate bundling window size without complex real-time calculations, balancing accuracy requirements with implementation simplicity.
Data Source
AI summary
The embodiments of the present disclosure provide a demodulation reference signal (DMRS) bundling window determination method and apparatus, and a storage medium. The method comprises: on the basis of the configuration of a network side device or predefined rules agreed upon between the network side device and a terminal, determining the size of a DMRS bundling window of an uplink multi-slot DMRS transmission pattern. The embodiments of the present disclosure achieve the determination of a DMRS time domain range.