Cross-Link Interference Reporting With UE Timing Qualification

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Solution Overview

Problem

In wireless communications systems, user equipment (UEs) may not have sufficient time to perform cross-link interference (CLI) measurements and prepare reports due to timing constraints, especially in sub-band full duplex (SBFD) communications, leading to incomplete or delayed CLI reporting.

Innovation Solution

UEs transmit capability information regarding CLI measurement and reporting timing, receive configuration signaling, and trigger events to ensure timely CLI measurements and reporting, adhering to a defined timing requirement, which includes evaluating the duration between trigger events and measurement resources to determine participation in the CLI process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If UEs perform CLI measurements and reporting in SBFD communications, then interference mitigation is improved, but timing constraints cause incomplete or delayed reporting

Engineering Contradiction:

ImproveCLI reporting completenessVSAvoidmeasurement preparation time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The network entity pre-configures CLI measurement resources and reporting parameters before triggering measurements. UEs receive and store measurement configurations, resource allocations, and reporting criteria in advance, enabling them to immediately execute measurements when triggered without time-consuming setup procedures.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements dynamic timing adjustments where the network entity can modify measurement triggers, resource allocations, and reporting schedules based on real-time interference conditions and UE capabilities. This allows flexible adaptation of measurement timing to meet both interference mitigation requirements and UE processing constraints.

Inventive Principle:

Principle #15Dynamics

2Manufacturing precision

If UEs transmit capability information for CLI measurement, then network configuration accuracy is improved, but signaling overhead increases

Engineering Contradiction:

Improveconfiguration accuracyVSAvoidsignaling overhead

Core Design Contradiction:

Manufacturing precisionVSLoss of information

Solution Approach 1:

CLI capability information is extracted and reported only when relevant to current network operations. The system selectively requests specific capability parameters based on deployment scenarios, avoiding transmission of unnecessary capability data and reducing signaling overhead while maintaining configuration accuracy for active measurements.

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentUS20260019178A1Timing requirement for cross link interference reporting

Publication Date: 2026.01.15 QUALCOMM INC

AI summary

Methods, systems, and devices for wireless communications are described. Techniques described herein provide for a timing requirement for cross link interference (CLI) reporting. In some examples, a user equipment (UE) may transmit capability information that pertains to a UE capability for CLI measurement and reporting. The UE may receive control signaling that indicates a configuration for the CLI measurement and the CLI reporting based on a timing requirement for the timing between a CLI measurement resource and receipt of a trigger event. The UE may receive control signaling that is the trigger event that triggers the CLI measurement on the CLI measurement resource and that triggers transmission of a CLI report on a CLI report resource. The UE may evaluate a duration between a resource of the trigger event and the CLI report resource to determine participation in a CLI measurement and reporting process.