CSI Feedback Control Using Dynamic Processing Unit Allocation
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently determining the number of channel state information (CSI) processing units (CPUs) and CSI reporting, leading to increased energy consumption at base stations and sub-optimal resource allocation.
Innovation Solution
A method and device for determining the number of CSI processing units based on CSI-reference signal (RS) resources and sub-configurations, allowing for intelligent CSI reporting and dropping of unnecessary reports to optimize energy consumption and resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of CSI processing units is increased to handle more sub-configurations, then the CSI reporting capability is improved, but the energy consumption at base stations increases
Solution Approach 1:
The patent implements dynamic adjustment of the number of CSI processing units based on the actual number of activated sub-configurations. The base station determines the required CPU count by counting activated sub-configurations and compares it with a threshold, adjusting resource allocation in real-time rather than maintaining a fixed high capacity, thus resolving the contradiction between handling capability and energy consumption
Solution Approach 2:
The system changes the parameter of CPU count dynamically based on the number of activated sub-configurations. By adjusting this key parameter according to actual demand, the system achieves optimal balance between processing capability and energy efficiency, avoiding both over-provisioning and under-provisioning of resources
2Measurement precision
If all CSI reports are transmitted to ensure comprehensive channel state information, then the measurement precision is improved, but the loss of time and energy increases
Solution Approach 1:
The patent extracts and transmits only the necessary CSI reports by comparing the number of activated sub-configurations with a threshold. When the count exceeds the threshold, selective reporting is applied to extract only the most critical CSI information, avoiding transmission of redundant data and thus reducing time loss while maintaining essential measurement precision
Solution Approach 2:
Instead of transmitting all possible CSI reports (excessive action), the system applies partial action by selectively transmitting only those reports that exceed the threshold criterion. This partial transmission approach maintains sufficient measurement precision while significantly reducing processing and transmission time
Data Source
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AI summary
The purpose of the present disclosure is to perform channel state information (CSI) feedback by considering the number of CSI processing units (CPUs) in a wireless communication system. A method performed by a user equipment may comprise the steps of: receiving configuration information regarding a channel state information (CSI) report; receiving control information activating at least one sub-configuration from among a plurality of sub-configurations included in the CSI report; determining the number of first CSI processing units (CPUs) for the CSI report; on the basis of the number of first CPUs and the maximum number of supportable second CPUs, determining whether or not to drop the CSI report; if the CSI report is not dropped, transmitting a report message including the CSI report; and if the CSI report is dropped, transmitting a report message not including the CSI report.