DM-RS Resource Mapping for Wireless Signal Interference
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in transmitting signals, particularly in cellular networks, due to overlapping time-frequency resources for demodulation-reference signals (DM-RS) and data channels, which affects channel estimation and data demodulation.
Innovation Solution
A wireless communication system that includes a processor configured to manage time-frequency resources for DM-RS and data channels, allowing for non-overlapping reception of DM-RS and data channels by monitoring and puncturing resources as needed, ensuring accurate channel estimation and demodulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If time-frequency resources for DM-RS and data channels are allocated independently, then channel estimation and data demodulation can be performed accurately, but resource utilization efficiency decreases due to potential overlaps and interference
Solution Approach 1:
The patent segments the time-frequency resource grid into distinct regions for DM-RS and data channel transmission. By dividing the resources into separate time-frequency blocks, the system prevents overlap between reference signals and data channels, ensuring accurate channel estimation while maintaining efficient resource utilization through structured allocation patterns.
Solution Approach 2:
The patent introduces flexible time-frequency resource allocation that extends beyond traditional two-dimensional (time-frequency) constraints. By allowing DM-RS and data channels to be transmitted in different time-frequency locations through flexible scheduling, the system achieves both accurate channel estimation and efficient resource usage, effectively adding a dimension of flexibility to resource management.
2Productivity
If DM-RS and data channels share overlapping time-frequency resources, then resource efficiency improves, but interference between signals increases affecting demodulation performance
Solution Approach 1:
The patent extracts the DM-RS transmission from potential overlapping regions by identifying and isolating time-frequency resources dedicated to reference signal transmission. This extraction ensures that data channels do not interfere with DM-RS, maintaining signal integrity while optimizing overall resource utilization through careful resource mapping and allocation strategies.
Solution Approach 2:
The patent introduces time-frequency resource mapping as an intermediary mechanism that mediates between the need for efficient resource sharing and the requirement to prevent signal interference. Through sophisticated mapping techniques and coordination between transmission and reception modules, the system enables efficient resource utilization while preventing harmful interference between DM-RS and data channels.
3Adaptability or versatility
If flexible time-frequency resource allocation is implemented, then adaptability to different transmission conditions improves, but complexity of resource management increases
Solution Approach 1:
The patent implements dynamic time-frequency resource allocation that adapts transmission parameters based on real-time channel conditions. The system dynamically adjusts resource mapping, selection, and allocation to optimize performance under varying conditions while managing complexity through automated control mechanisms and standardized protocols that simplify the dynamic management process.
Data Source
AI summary
Provided is a wireless communication user equipment that wirelessly communicates. The wireless communication user equipment includes a communication module; and a processor configured to control the communication module. The processor is configured to receive a demodulation reference signal (DM-RS) of data channel and receive the data channel based on the DM-RS of the data channel, wherein a time-frequency resource mapped to the DM-RS is predetermined. When the time-frequency resource mapped to the transmission of the DM-RS of the data channel overlaps with the time-frequency resource mapped to a different purpose from the transmission of the DM-RS, the processor is configured not to receive the DM-RS in a resource element (RE) overlapping with the time-frequency resource mapped to the different purpose in the time-frequency resource mapped to the transmission of the DM-RS. The DM-RS is a reference signal specific to the wireless communication device.