CSI Field Mapping for Accurate Reporting in Energy-Saving Networks

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Solution Overview

Problem

In wireless communication applications, dynamic adjustments by network devices for energy saving can cause inaccurate or untimely reporting of Channel State Information (CSI), affecting transmission performance.

Innovation Solution

A method and apparatus for mapping CSI, involving a terminal equipment that receives a CSI report configuration and indication information to trigger specific sub-configurations, determining a CSI report based on a field mapping order, ensuring accurate CSI reporting even in energy-saving scenarios.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If network device dynamically adjusts the number of antennas or transmission power for energy saving, then energy consumption is reduced, but channel state information reporting accuracy deteriorates

Engineering Contradiction:

Improveenergy consumptionVSAvoidCSI reporting accuracy

Core Design Contradiction:

Use of energy by moving objectVSMeasurement precision

Solution Approach 1:

The CSI report configuration is segmented into multiple sub-configurations, each corresponding to different antenna adjustment modes or configurations. The terminal equipment can selectively report CSI based on which sub-configuration is activated, allowing the network device to maintain accurate CSI for the specific antenna configuration being used while reducing overall energy consumption through selective activation.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The network device pre-configures multiple CSI report sub-configurations corresponding to different antenna adjustment modes before dynamic adjustment occurs. When energy-saving mode is activated, the network device can trigger specific pre-configured sub-configurations, ensuring that accurate CSI reporting is immediately available for the current antenna configuration without requiring real-time reconfiguration.

Inventive Principle:

Principle #10Preliminary action

2Use of energy by moving object

If network device turns off some antennas for energy saving, then energy consumption is reduced, but transmission performance deteriorates

Engineering Contradiction:

Improveenergy consumptionVSAvoidtransmission performance

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The system dynamically adapts the CSI report configuration based on the actual antenna configuration. When antennas are turned off for energy saving, the network device triggers specific sub-configurations that correspond to the reduced antenna setup, allowing the transmission performance to be optimized for the current operational state rather than attempting to maintain performance for all possible configurations.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The CSI report configuration parameters are changed based on the antenna configuration state. Different sub-configurations use different reporting parameters appropriate for their specific antenna setups, allowing accurate performance measurement and reporting for each operational mode while maintaining energy efficiency.

Inventive Principle:

Principle #35Parameter changes

3Reliability

If multiple CSI reports are configured for different antenna modes, then transmission performance is maintained, but reporting overhead increases

Engineering Contradiction:

Improvetransmission performanceVSAvoidreporting overhead

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

Instead of reporting all possible CSI configurations simultaneously, the system extracts and reports only the CSI corresponding to the currently activated sub-configuration. The indication information triggers which specific CSI report should be generated, reducing the reporting overhead to only what is necessary for the current operational state while maintaining transmission performance.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The system uses partial action by reporting only a subset of the total possible CSI configurations - specifically, only the CSI corresponding to the activated sub-configuration. This partial reporting approach maintains sufficient transmission performance for the current mode while significantly reducing the overall reporting overhead compared to reporting all configurations.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentEP4716121A1Channel state information mapping method and apparatus

Publication Date: 2026.03.25 FINITY INC

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AI summary

Embodiments of the present disclosure provide a method and an apparatus for mapping channel state information, the method including: a terminal equipment receives a channel state information (CSI) report configuration, the channel state information (CSI) report configuration being related to K pieces of CSI, the channel state information (CSI) report configuration including P sub-configurations, one of the P sub-configurations corresponding to at least one piece of CSI, where 1 ≤ P ≤ K; the terminal equipment receives indication information, the indication information being used to trigger (indicate/activate) N sub-configurations in the P sub-configurations, 1 ≤ N ≤ P; and the terminal equipment determines a CSI report at least according to a CSI field mapping order, wherein the CSI report includes at least one piece of CSI corresponding to the N sub-configurations.