CSI Report Structure for Dynamic Antenna Port Adaptation

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Solution Overview

Problem

Existing wireless communication systems face challenges in dynamically adapting antenna ports due to limited CSI report formats that hinder efficient power management and connectivity maintenance, leading to potential loss of connectivity and poor channel conditions.

Innovation Solution

Implementing a CSI report structure that allows for conveying CSI associated with multiple codebooks in a single report, enabling dynamic antenna port adaptation with reduced latency and resource usage, thereby maintaining link quality and reducing power consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If traditional CSI report formats are used for antenna port adaptation, then device complexity is reduced, but adaptability and link quality maintenance deteriorate

Engineering Contradiction:

Improveantenna port adaptation capabilityVSAvoidCSI report structure complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The CSI report is segmented into multiple parts: a first part containing RI and CQI for a first codebook, and a second part containing PMI and CQI for a second codebook. This segmentation allows the system to convey multiple codebook information efficiently while maintaining structured organization, thereby improving antenna port adaptation capability without excessive complexity increase.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The CSI report structure is designed to serve multiple functions simultaneously: it provides rank indication (RI), channel quality indication (CQI), and precoding matrix indication (PMI) for different codebooks. This multi-functionality enables comprehensive antenna port adaptation while utilizing a unified report mechanism, balancing adaptability and complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Measurement precision

If multiple separate CSI reports are transmitted for different codebooks, then measurement precision is improved, but loss of time and resource usage increase

Engineering Contradiction:

ImproveCSI measurement accuracyVSAvoidreporting latency

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

Multiple CSI measurements for different codebooks are merged into a single unified CSI report. The report includes RI and CQI for a first codebook in the first part, and PMI and CQI for a second codebook in the second part. This merging reduces reporting latency and uplink resource usage while maintaining the precision of individual measurements through structured organization.

Inventive Principle:

Principle #5Merging (Combining)

3Reliability

If dynamic antenna port adaptation is implemented with detailed CSI reporting, then reliability of connectivity is improved, but use of energy increases

Engineering Contradiction:

Improveconnectivity maintenanceVSAvoiduplink power consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The system implements partial reporting by selectively including only the necessary CSI parameters for each codebook in the unified report. Instead of reporting all possible parameters for all codebooks, the UE reports RI and CQI for the first codebook and PMI and CQI for the second codebook, providing sufficient information for reliable connectivity while reducing uplink power consumption compared to exhaustive reporting.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS12519520B2Channel state information (CSI) report structure for dynamic antenna port adaptation

Publication Date: 2026.01.06 QUALCOMM INC

AI summary

This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for channel state information (CSI) report structure for dynamic antenna port adaptation. In some aspects, a user equipment (UE) and a network entity may support a CSI report configuration according to which the UE may include a respective set of CSI parameters for each of multiple codebooks. For example, the UE may compute a respective set of CSI parameters for each of multiple codebooks in accordance with a CSI report configuration and may transmit a CSI report including the respective sets of CSI parameters for each of the multiple codebooks. The network entity may use the respective sets of CSI parameters for each of the multiple codebooks to inform a dynamic antenna panel configuration update at the network entity.