CSI Reporting with IMR Configuration for Cross-Link Interference

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Solution Overview

Problem

Existing wireless communication systems face challenges in effectively managing cross-link interference (CLI) due to the lack of efficient channel state information (CSI) reporting mechanisms, which hampers optimal resource allocation and communication quality.

Innovation Solution

Implementing CSI configurations and reporting methods that include interference measurement resources (IMRs) for cross-link interference, enabling UEs and base stations to measure and report CLI, thereby facilitating better interference management.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If CSI reporting mechanisms are implemented for cross-link interference measurement, then interference management capability is improved, but device complexity and signaling overhead increase

Engineering Contradiction:

Improveinterference management capabilityVSAvoidCSI reporting mechanism complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The interference measurement process is segmented into distinct components: IMR configuration, CLI measurement, CSI calculation, and reporting. Each component is handled separately with specific signaling messages, allowing the system to manage complexity through modular processing while maintaining comprehensive interference management capability

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces intermediary signaling elements including CSI configuration messages, IMR indications, and CSI report transmissions that mediate between the UE and base station. These intermediaries facilitate the complex interference measurement process by providing structured communication protocols and standardized message formats

Inventive Principle:

Principle #24Intermediary (Mediator)

2Measurement precision

If interference measurement resources (IMR) are allocated for CLI measurement, then measurement precision is improved, but resource allocation overhead increases

Engineering Contradiction:

ImproveCLI measurement accuracyVSAvoidresource allocation overhead

Core Design Contradiction:

Measurement precisionVSQuantity of substance

Solution Approach 1:

The patent allocates IMR resources with specific local characteristics tailored to CLI measurement requirements. The IMR configuration includes parameters such as resource location, timing, and frequency allocation that are optimized specifically for cross-link interference measurement, providing localized measurement capability without requiring comprehensive resource allocation across the entire system

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The system implements partial measurement action by allocating IMR resources only when and where CLI measurement is required, rather than continuously across all resources. The base station can configure IMR for specific UEs, specific time periods, or specific frequency resources based on actual interference conditions, avoiding excessive resource consumption while maintaining measurement precision where needed

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS12587245B2Channel state information report for cross-link interference

Publication Date: 2026.03.24 QUALCOMM INC

AI summary

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a channel state information (CSI) configuration indicating an interference measurement resource (IMR) associated with cross-link interference (CLI). The UE may transmit a CSI report based at least in part on a measurement on the IMR associated with CLI. Numerous other aspects are described.