Cross-Link Interference Measurement Using Shared TDD Patterns

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Solution Overview

Problem

Existing wireless communication systems face challenges in accurately identifying and mitigating cross-link interference, which affects the performance of 5G and beyond mobile communication technologies, particularly in high-frequency bands like mmWave and terahertz bands.

Innovation Solution

A method and apparatus for measuring and managing cross-link interference by processing control signals, allowing each cell to effectively identify and mitigate interference from another cell, using shared TDD or SBFD pattern information to predict and manage interference.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If TDD or SBFD pattern information is shared between cells to predict and manage interference, then cross-link interference mitigation accuracy is improved, but system complexity and information management overhead increase

Engineering Contradiction:

Improveinterference measurement accuracyVSAvoidsystem complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The interference management approach is segmented into distinct components: TDD pattern information sharing, cross-link interference prediction, and mitigation execution. Each cell independently performs prediction based on shared pattern information, allowing distributed interference management without centralized control complexity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

TDD pattern information is shared in advance between cells before interference occurs. This preliminary action enables each cell to predict potential cross-link interference proactively and prepare mitigation strategies, rather than reacting to interference after it degrades performance.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If cross-link interference prediction using shared TDD pattern information is implemented, then interference mitigation effectiveness is improved, but processing overhead and signaling complexity increase

Engineering Contradiction:

Improveinterference mitigation effectivenessVSAvoidprocessing overhead

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

Each cell autonomously performs cross-link interference prediction and mitigation using the shared TDD pattern information. The system serves itself by enabling distributed intelligence where each cell independently makes interference management decisions without requiring complex centralized coordination or extensive inter-cell signaling.

Inventive Principle:

Principle #25Self-service

3Productivity

If interference prediction is performed using shared TDD pattern information, then system performance in high-frequency bands is improved, but information management overhead increases

Engineering Contradiction:

Improvesystem performanceVSAvoidinformation management overhead

Core Design Contradiction:

ProductivityVSLoss of information

Solution Approach 1:

The shared TDD pattern information serves multiple functions simultaneously: it defines time slot allocation patterns, enables cross-link interference prediction, and guides mitigation strategies. This multi-functionality reduces the need for separate information exchanges and management overhead while improving overall system performance in high-frequency bands.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20260012323A1Method and apparatus for measuring cross link interference in wireless communication system

Publication Date: 2026.01.08 SAMSUNG ELECTRONICS CO LTD

AI summary

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. According to various embodiments of the disclosure, a method for processing a control signal in a wireless communication system may include receiving a first control signal transmitted from a base station, processing the received first control signal, and transmitting, to the base station, a second control signal generated based on the processing.