CSI Reporting Power Offset Control for Variable CSI-RS EPRE
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing systems face challenges in determining the appropriate ratio of PDSCH EPRE to CSI-RS EPRE for accurate CSI reporting, which affects network energy consumption and system performance.
Innovation Solution
A method for wireless communication that adjusts the CSI-RS EPRE flexibly by using power control offsets to improve CSI reporting accuracy and regulate network energy consumption, allowing for different EPRE in transmission occasions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a fixed ratio of PDSCH EPRE to CSI-RS EPRE is used in CSI reporting calculation, then the system operation is simple, but the CSI reporting accuracy deteriorates when channel conditions change
Solution Approach 1:
The patent applies dynamics by transitioning from a fixed EPRE ratio to a dynamic determination mechanism. The CSI-RS EPRE is now determined based on actual transmission occasions and power control offsets rather than a predetermined fixed value, allowing the system to adapt to changing channel conditions and improve CSI reporting accuracy without excessive complexity
Solution Approach 2:
The patent changes the parameter approach by introducing power control offsets that modify the CSI-RS EPRE value. Instead of using a static ratio, the system now adjusts the EPRE parameter dynamically based on transmission power adjustments and power control configurations, enabling accurate CSI reporting under varying power conditions
2Measurement precision
If the CSI-RS EPRE is adjusted to match actual transmission power, then the CSI reporting accuracy is improved, but the network energy consumption increases due to more frequent power adjustments
Solution Approach 1:
The patent uses parameter changes through power control offsets to adjust CSI-RS EPRE dynamically. By modifying the EPRE parameter based on actual transmission power rather than maintaining fixed values, the system achieves accurate CSI reporting while allowing flexible energy management through controlled parameter adjustments
Solution Approach 2:
The patent implements feedback mechanisms where the UE measures actual CSI-RS EPRE in transmission occasions and uses this information to calculate CSI reporting with appropriate power adjustments. This feedback loop enables accurate channel state reporting that reflects actual transmission conditions without requiring continuous full-power transmissions
3Adaptability or versatility
If different EPRE values are used in different transmission occasions of CSI-RS resources, then the adaptability to channel conditions is improved, but the device complexity increases due to multiple EPRE management requirements
Solution Approach 1:
The patent applies dynamics by allowing different EPRE values in different transmission occasions of CSI-RS resources. The system dynamically selects and applies appropriate EPRE values based on actual transmission conditions, enabling adaptability to changing channel conditions while using power control offsets to manage the complexity of handling multiple EPRE values
Solution Approach 2:
The patent applies local quality by allowing different EPRE values for different CSI-RS resources and transmission occasions based on local channel conditions. Each CSI-RS resource can have its own power control offset and EPRE configuration, enabling localized adaptation without requiring complex global EPRE management
Data Source
Figure 1A~1B
Figure 2~3
Figure 4
AI summary
Disclosed in the present application are a method and apparatus used in a node for wireless communication. The method comprises: a first node receiving a first CSI reporting configuration, wherein the first CSI reporting configuration comprises a first RS resource set; receiving a first information block, wherein the first information block is used for indicating a first power control offset; and sending first CSI reporting. A first occasion set comprises at least one transmission occasion of at least a first CSI-RS resource in the first RS resource set that is not later than a CSI reference resource of the first CSI reporting; in the calculation of the first CSI reporting, the ratio of PDSCH EPRE to first CSI-RS EPRE is equal to the first power control offset; and the first CSI reporting indicates the first CSI-RS resource, and EPRE in one transmission occasion of the first CSI-RS resource in the first occasion set is different from the first CSI-RS EPRE.