Dynamic CSI Reporting for Non-Coherent Joint Transmission

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Solution Overview

Problem

Existing wireless communication systems lack dynamic mechanisms for indicating channel state information reporting type from a base station to a wireless device, which can lead to inefficient resource allocation and suboptimal performance.

Innovation Solution

The implementation of a dynamic indication mechanism for channel state information reporting type, allowing base stations to dynamically configure the type of CSI reporting with wireless devices, enhancing flexibility and adaptability to changing radio conditions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a dynamic indication mechanism for CSI reporting type is implemented, then adaptability to changing radio conditions is improved, but device complexity increases

Engineering Contradiction:

Improveadaptability to changing radio conditionsVSAvoiddevice complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements dynamic indication mechanisms where the base station can dynamically indicate CSI reporting types through DCI formats and MAC CE commands, allowing the system to adapt to changing radio conditions in real-time rather than using static pre-configured reporting types

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the parameter of CSI reporting type indication from static to dynamic by introducing multiple indication methods including DCI format modifications and MAC CE commands, allowing the reporting type to be adjusted based on current channel conditions

Inventive Principle:

Principle #35Parameter changes

2Productivity

If multiple CSI reporting types are supported dynamically, then resource allocation efficiency is improved, but signaling overhead increases

Engineering Contradiction:

Improveresource allocation efficiencyVSAvoidsignaling overhead

Core Design Contradiction:

ProductivityVSLoss of information

Solution Approach 1:

The patent segments the CSI reporting mechanism into different types (e.g., Type I and Type II) that can be independently indicated and activated, allowing the system to select only the necessary reporting type for current conditions rather than always using the most comprehensive type

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies partial action by enabling the system to use simplified CSI reporting (Type I) when conditions permit, rather than always using the more resource-intensive Type II reporting, thus reducing signaling overhead while maintaining adequate performance

Inventive Principle:

Principle #16Partial or excessive action

3Adaptability or versatility

If non-coherent joint transmission is supported, then system versatility is improved, but measurement and detection difficulty increases

Engineering Contradiction:

Improvesystem versatilityVSAvoidmeasurement and detection difficulty

Core Design Contradiction:

Adaptability or versatilityVSDifficulty of detecting and measuring

Solution Approach 1:

The patent introduces CSI-RS (Channel State Information Reference Signals) as an intermediary that facilitates measurement and detection in non-coherent joint transmission scenarios, providing known reference signals that the wireless device can use to estimate channel characteristics without requiring complex direct measurements

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS12328169B2Channel state information reporting for non-coherent joint transmission

Publication Date: 2025.06.10 OFINNO LLC

AI summary

A wireless device receives configuration parameters of channel state information (CSI) resource configurations for a CSI report configuration of a cell. The CSI resource configurations comprise first CSI resource configurations associated with a first transmission reception point (TRP) of the cell and second CSI resource configurations associated with at least two TRPs of the cell, wherein the at least two TRPs comprise the first TRP. The wireless device receives a command comprising a first field triggering the CSI report configuration of the cell and a second field indicating that the CSI report configuration is associated with the second CSI resource configurations. The wireless device transmits, based on the CSI report configuration and in response to the command, a CSI report comprising one or more CSI quantities of the at least two TRPs.