DMRS Pattern Reporting for Wireless Control Overhead Reduction
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Solution Overview
Problem
The increasing number of user equipment (UEs) and the corresponding data and control information to be transmitted by base stations (BSs) in wireless communication systems pose challenges in efficiently utilizing limited radio resources, particularly in transmitting and receiving uplink/downlink data and control information.
Innovation Solution
A method and apparatus for reporting demodulation reference signal (DMRS) patterns preferred by user equipment (UEs), allowing the BS to efficiently manage DMRS information, including indicating preferred DMRS patterns based on measurement resources, channel state information, and other indicators to optimize signal transmission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of user equipment and data transmission increases to satisfy rapidly growing data throughput demands, then data capacity and coverage are improved, but the amount of control information and signaling overhead increases, consuming more limited radio resources
Solution Approach 1:
The patent extracts and separates DMRS pattern indication information from other uplink control information. By identifying DMRS-related information as a distinct element that can be reported separately, the system reduces the overall control information volume while maintaining necessary signaling functionality. This extraction allows for more efficient resource utilization.
Solution Approach 2:
The patent segments control information reporting into different types, specifically separating DMRS pattern indication from other control information. This segmentation enables targeted transmission of only necessary information, reducing redundant signaling and optimizing radio resource usage while supporting increased data throughput.
2Adaptability or versatility
If multiple demodulation reference signal patterns are supported to improve signal transmission adaptability, then communication reliability is improved, but the complexity of managing and reporting DMRS information increases
Solution Approach 1:
The patent implements dynamic DMRS pattern selection where the UE can indicate its preferred DMRS pattern based on current channel conditions and requirements. This dynamic approach allows the system to adapt to varying transmission conditions without requiring complex static configuration management, simplifying the overall system while maintaining high adaptability.
Solution Approach 2:
The patent establishes a feedback mechanism where the UE reports its preferred DMRS pattern indication to the base station. This feedback loop enables the base station to select appropriate DMRS patterns based on UE preferences and channel conditions, reducing the complexity of centralized DMRS management while maintaining high adaptability across different transmission scenarios.
Data Source
AI summary
The present invention provides a method and a user equipment for reporting a demodulation reference signal pattern preferred by the user equipment among demodulation reference signal patterns of which locations of demodulation reference signals, demodulation reference signal densities and the like are defined differently within a predetermined time-frequency resource region, and a method and a base station for receiving the report of the preferred demodulation reference signal pattern.