CSI Reporting Adaptation Patterns for 5G Overhead Reduction

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Solution Overview

Problem

The high power consumption and significant overhead in CSI reporting due to large bandwidth multi-antennas in 5G communication systems, particularly in gNBs, necessitate efficient methods to reduce signaling overhead while maintaining effective channel state information reporting.

Innovation Solution

Implementing CSI report configurations with adaptation patterns and overhead reduction techniques, allowing User Equipment (UE) to selectively report CSIs based on conditions such as CSI report type, resource settings, and UE capabilities, using RRC signaling and DCI/MAC CE to manage CSI reporting modes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If large bandwidth multi-antennas are used in 5G communication systems, then network capacity and data rates are improved, but power consumption and signaling overhead increase significantly

Engineering Contradiction:

Improvenetwork capacityVSAvoidpower consumption

Core Design Contradiction:

ProductivityVSUse of energy by moving object

Solution Approach 1:

The CSI reporting process is segmented into multiple reporting modes (first mode without overhead reduction, second mode with overhead reduction). The system divides the CSI resources into multiple CSI-RS resources associated with different adaptation patterns, allowing selective reporting based on channel conditions and UE capabilities, thereby reducing overall power consumption while maintaining network capacity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements dynamic adaptation patterns that allow the system to adjust CSI reporting behavior based on real-time conditions. The adaptation patterns enable dynamic switching between different CSI reporting modes, where the UE can selectively report CSIs based on conditions such as CSI report type, resource settings, and UE capabilities, optimizing power consumption dynamically.

Inventive Principle:

Principle #15Dynamics

2Productivity

If large bandwidth multi-antennas are used in 5G communication systems, then network capacity and data rates are improved, but signaling overhead increases significantly

Engineering Contradiction:

Improvenetwork capacityVSAvoidsignaling overhead

Core Design Contradiction:

ProductivityVSQuantity of substance

Solution Approach 1:

The CSI reporting is segmented into different modes with varying overhead levels. The system configures multiple CSI-RS resources with different adaptation patterns, allowing the network to select appropriate reporting granularities. This segmentation enables reduced signaling overhead by only reporting necessary CSI parameters based on current channel conditions and UE capabilities.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent changes key parameters of CSI reporting including reporting mode (first mode without overhead reduction, second mode with overhead reduction), adaptation patterns, and resource configurations. By dynamically adjusting these parameters based on channel conditions and UE capabilities, the system reduces signaling overhead while maintaining effective channel state information reporting for high capacity operation.

Inventive Principle:

Principle #35Parameter changes

3Measurement precision

If CSI reporting is performed without overhead reduction, then measurement precision is maintained, but signaling overhead and power consumption increase

Engineering Contradiction:

ImproveCSI measurement precisionVSAvoidsignaling overhead

Core Design Contradiction:

Measurement precisionVSQuantity of substance

Solution Approach 1:

The system dynamically switches between two CSI reporting modes: first mode without overhead reduction that maintains full measurement precision, and second mode with overhead reduction that reduces signaling. The adaptation patterns enable this dynamic behavior by allowing the UE to selectively report CSIs based on conditions such as CSI report type, resource settings, and UE capabilities, optimizing the trade-off between precision and overhead.

Inventive Principle:

Principle #15Dynamics

4Adaptability or versatility

If multiple CSI-RS resources with different adaptation patterns are configured, then adaptability of CSI reporting is improved, but device complexity increases

Engineering Contradiction:

ImproveCSI reporting adaptabilityVSAvoidterminal device complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent segments CSI-RS resources into multiple groups, each associated with different adaptation patterns. This segmentation allows the system to configure multiple CSI-RS resources with different adaptation patterns while managing complexity through structured organization. The UE can selectively process and report based on configured conditions, improving adaptability without overwhelming device complexity.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS20260066972A1Method, device and computer program product for wireless communication

Publication Date: 2026.03.05 ZTE CORP

AI summary

A wireless communication method is disclosed. The method comprises receiving, by a wireless communication terminal from a wireless communication node, at least one channel state information, CSI, report configuration associated with a channel state information reference signal, CSI-RS, resource setting for a channel measurement, wherein the CSI-RS resource setting comprises one or more CSI-RS resources associated with one or more adaptation patterns; and performing, by the wireless communication terminal, a CSI reporting according to the at least one CSI report configuration.