CSI Reference Signal Power Offsets for Accurate Wireless Measurement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing methods for determining the power value of reference signals in wireless communication systems, particularly in AI/ML scenarios, are inadequate and require improvement to enhance accuracy and reduce overhead.
Innovation Solution
A method for configuring and transmitting reference signals with power offsets associated with different CSI types, using signaling to indicate these offsets, thereby allowing flexible and efficient power management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single fixed power offset is used for reference signal transmission, then the system complexity is reduced and compatibility with existing standards is maintained, but the adaptability to different CSI types and AI/ML scenarios is insufficient
Solution Approach 1:
The patent introduces dynamic power offset selection by associating different power offsets with different CSI types. The network device can dynamically select appropriate power offsets based on the specific CSI type being reported, transitioning from a static single power offset to a dynamic multi-power offset system that adapts to different channel state information requirements.
Solution Approach 2:
The patent changes the power offset parameter from a fixed value to a set of configurable values associated with different CSI types. By introducing multiple power offset parameters (first power offset, second power offset, etc.) that can be selectively applied based on CSI type, the system achieves better adaptability while maintaining manageable complexity through structured parameter organization.
2Measurement precision
If multiple power offsets are configured for different CSI types, then the measurement precision and CSI accuracy are improved, but the signaling overhead increases
Solution Approach 1:
The patent uses indicator values (first indicator, second indicator) to copy or reference the association between CSI types and power offsets without transmitting the complete power offset configuration for each CSI type. The indicator serves as a compact reference that points to pre-configured power offset values, reducing signaling overhead while maintaining the ability to convey multiple power offset associations.
Solution Approach 2:
The patent introduces an intermediary indicator mechanism that mediates between the CSI type and the power offset configuration. Instead of directly signaling the power offset values for each CSI type, the indicator acts as an intermediary that references pre-configured associations, thereby reducing the amount of signaling required while preserving the detailed power offset information when needed.
3Reliability
If power offsets are associated with CSI types through explicit signaling, then the reliability of power configuration is improved, but the signaling overhead and processing complexity increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring the associations between CSI types and power offsets before actual CSI reporting occurs. The network device establishes the power offset associations in advance through RRC signaling or other configuration mechanisms, so that during CSI reporting, the UE can directly reference pre-established associations rather than requiring complex real-time configuration and processing.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The present application discloses a method and apparatus used in a node for wireless communication. A first node receives first signaling, the first signaling being used for configuring a first reference signal resource; receives a first reference signal in the first reference signal resource; and sends first channel information. Measurement for the first reference signal is used for generating the first channel information; a power offset of the sending power of the first reference signal with respect to the sending power of a broadcast signal is a first candidate offset among a plurality of candidate offsets; each of the plurality of candidate offsets is associated with a CSI type set; the first candidate offset is a candidate offset, among the plurality of candidate offsets, associated with the first CSI type set; and the first channel information corresponds to one or more CSI types in the first CSI type set. The present application improves the determination of reference signal power in different scenes, thereby improving the precision of measurement and the reliability of transmission.