Reference Signal Group Configuration for Efficient CSI Tracking
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Solution Overview
Problem
Current reference signal configuration or transmission methods result in low CSI measurement efficiency, particularly in medium and high-speed mobile scenarios where channel conditions change rapidly.
Innovation Solution
Configuring at least two reference signals with specific frequency and time domain resource allocations, periodicities, and slot offsets to improve CSI measurement efficiency and reduce resource overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE frequently reports CSI to track rapid channel changes in medium and high-speed mobile scenarios, then the channel quality tracking is improved, but the reference signal resource overhead and measurement complexity increase
Solution Approach 1:
The patent divides reference signal resources into multiple groups, where each group contains multiple reference signals with different time domain resources. This segmentation allows the system to selectively activate specific groups based on channel conditions, reducing overall resource overhead while maintaining reliable CSI tracking for mobile scenarios
Solution Approach 2:
The patent introduces dynamic configuration of reference signal groups, where the network can adjust which groups are activated based on current channel conditions and mobility requirements. This dynamic approach enables the system to optimize between resource overhead and tracking reliability in real-time
2Productivity
If multiple reference signals are configured with overlapping frequency domain resources but different time domain resources, then the CSI measurement efficiency is improved, but the device complexity for managing reference signal resources increases
Solution Approach 1:
The patent configures reference signals with periodic structures, where each reference signal in a group has defined periodicity and slot offset parameters. This periodic arrangement allows the UE to efficiently measure CSI across different time instances without requiring complex non-periodic resource management, improving measurement efficiency while controlling device complexity
Solution Approach 2:
The patent varies key parameters (periodicity, slot offset) across different reference signals within a group, allowing the system to achieve diverse measurement opportunities. By systematically changing these parameters rather than using arbitrary configurations, the patent improves CSI measurement efficiency while keeping the management complexity predictable and manageable
Data Source
AI summary
A reference signal configuration method, a method for reporting state information and related device are provided, which relate to the field of wireless technology, to solve the problem that the current reference signal configuration or transmission method leads to low CSI measurement efficiency. The method includes: configuring at least one group of reference signal resources, each group of reference signal resources including at least two reference signals.