Wireless Data Transmission Using Shifted DMRS Frequency Resources
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Solution Overview
Problem
Current wireless communication systems face challenges in supporting high data traffic, increased data rates, and low latency while maintaining energy efficiency, particularly in next-generation mobile communication systems that require advanced technologies like dual connectivity, massive MIMO, and non-orthogonal multiple access.
Innovation Solution
A method for configuring transmission and reception of data using multiple transmission reception points (TRPs), involving resource allocation and demodulation reference signal (DMRS) management to enhance reliability and channel estimation accuracy, including repeated transmission of the same transport block and efficient resource pattern configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple TRPs transmit the same transport block repeatedly, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent segments the transmission system into multiple TRPs (Transmission Reception Points) that can independently transmit the same transport block. Each TRP is configured with specific parameters including resource set groups, DMRS (Demodulation Reference Signal) patterns, and TCI (Transmission Configuration Indication) states. This segmentation allows the system to achieve diversity gains by exploiting different transmission paths while maintaining manageable complexity through standardized configuration parameters for each segment.
2Measurement precision
If DMRS is transmitted in every resource set, then channel estimation accuracy is improved, but signal overhead increases
Solution Approach 1:
The patent applies local quality by differentiating the transmission configuration between different resource sets. Specifically, it configures different DMRS patterns for different resource set groups - some resource sets include DMRS while others may have reduced or no DMRS. This allows the system to maintain channel estimation accuracy where needed (in resource sets with DMRS) while reducing overall overhead by omitting DMRS in resource sets where channel conditions are sufficiently known or where diversity gain is achieved through other means.
Data Source
AI summary
A method for transmitting/receiving data in a wireless communication system, and a device therefor are disclosed. Particularly, a method by which user equipment (UE) receives data in a wireless communication system comprises the steps of: receiving configuration information including resource allocation information related to a plurality of resource set groups; receiving a first demodulation reference signal (DMRS) and first data from a first resource set; and receiving a second DMRS and second data from a second resource set, wherein the first resource set and the second resource set are included in the same resource set group, pieces of quasi-co-location-related information related with the respective resource sets included in the same resource set group are the same, and the position of a frequency resource of the second DMRS can be shifted from the position of a frequency resource of the first DMRS so as not to be overlapped.