Interference Region Calculation for Repeater-Based Spectrum Sharing

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Solution Overview

Problem

The increasing demand for wireless communication in mixed wireless environments leads to exhaustion of radio resources, necessitating efficient dynamic spectrum sharing while protecting primary systems from interference.

Innovation Solution

An information processing device calculates interference source regions using position and arrangement information to determine if secondary transmitters will cause interference with primary systems, employing autonomous, centralized, or distributed decision-making topologies to manage spectrum use.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If dynamic spectrum sharing is implemented to enhance spectrum utilization efficiency, then spectrum utilization efficiency is improved, but radio wave interference between primary and secondary systems increases

Engineering Contradiction:

Improvespectrum utilization efficiencyVSAvoidradio wave interference

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent calculates an interference source region in advance before secondary transmission occurs. This region is determined based on the position of the primary receiver and the arrangement of the passive repeater, allowing the system to pre-identify potential interference zones and make informed spectrum access decisions before transmission begins.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent introduces an intermediary calculation mechanism that determines whether a secondary transmitter should be allowed to transmit based on the calculated interference source region. This intermediary assessment layer mediates between the desire for spectrum utilization and the need to protect primary systems from interference.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If passive repeaters are used to avoid obstacles and block radio waves, then communication reliability is improved, but the complexity of managing spectrum sharing increases

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidspectrum sharing management complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent enables the passive repeater system to self-manage its spectrum sharing characteristics by automatically calculating the interference source region based on its own position and arrangement information. This self-service approach allows the system to determine its own interference profile without requiring complex external coordination or manual configuration.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent changes the approach from manual spectrum management to automated parameter-based management. By calculating the interference source region as a derived parameter from position and arrangement information, the system transforms complex management tasks into straightforward parameter calculations, reducing operational complexity.

Inventive Principle:

Principle #35Parameter changes

3Measurement precision

If the interference source region is calculated using position information and repeater arrangement information, then interference prediction accuracy is improved, but the computational requirements increase

Engineering Contradiction:

Improveinterference prediction accuracyVSAvoidcomputational energy consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The patent replaces complex electromagnetic field simulations with a simplified geometric calculation model. Instead of performing computationally intensive radio wave propagation simulations, the system uses position information and repeater arrangement data to calculate interference source regions through straightforward geometric relationships, significantly reducing computational energy requirements while maintaining prediction accuracy.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enhances spectrum utilization efficiency by minimizing interference and optimizing secondary use of radio resources.

Implementation Method 1

arrangement information regarding a repeater that reflects a first radio wave transmitted from the first transmitter to relay the first radio wave to the first receiver

Methodology Applied

Scientific EffectReflection: Reflection

Data Source

PatentUS20260113076A1Information processing device, information processing method, and computer program

Publication Date: 2026.04.23 SONY GROUP CORP

AI summary

Provided are an information processing device, an information processing method, and a computer program that enhance spectrum utilization efficiency in an effective manner.An information processing device of the present disclosure includes a processing unit that calculates, on the basis of position information regarding a first receiver and arrangement information regarding a repeater that reflects a first radio wave transmitted from a first transmitter to relay the first radio wave to the first receiver, an interference source region for determining whether or not a second transmitter that makes a secondary use of a spectrum identical to or adjacent to a spectrum used by the first transmitter and the first receiver is located at a position where there is a possibility that a second radio wave transmitted by the second transmitter is reflected by the repeater to cause interference affecting the first receiver.