Communication Control Device for Optical Space Link Acquisition

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Solution Overview

Problem

Existing optical space communication methods require synchronization with the communication target for accurate optical axis adjustment, which limits the ability to search for a communication target without prior synchronization.

Innovation Solution

A communication control device and method that transmit scanning signals with different pulse patterns in forward and reverse directions, allowing the receiving device to specify the direction of the communication target based on reception intervals, enabling notification signals to be sent to the transmitting device without requiring synchronization with the communication target.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If synchronization with the communication target is required for accurate optical axis adjustment, then measurement precision is improved, but device complexity and ease of operation deteriorate

Engineering Contradiction:

Improveoptical axis adjustment accuracyVSAvoidoperation synchronization requirement

Core Design Contradiction:

Measurement precisionVSEase of operation

Solution Approach 1:

The communication control device transmits scanning signals with different pulse patterns in forward and reverse directions, enabling the system to automatically determine communication target direction through reception interval measurement without requiring manual synchronization operations. The device serves itself by using the transmitted signal characteristics to obtain directional information autonomously.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The invention changes the pulse pattern parameters of scanning signals between forward and reverse transmission directions. By measuring the reception intervals of these differently patterned signals, the system determines the communication target direction without requiring synchronization, thus improving ease of operation while maintaining measurement precision.

Inventive Principle:

Principle #35Parameter changes

2Measurement precision

If synchronization with the communication target is required, then optical axis adjustment accuracy is improved, but productivity deteriorates

Engineering Contradiction:

Improveoptical axis adjustment accuracyVSAvoidcommunication establishment speed

Core Design Contradiction:

Measurement precisionVSProductivity

Solution Approach 1:

The system automatically determines the communication target direction by measuring reception intervals of scanning signals with different pulse patterns, eliminating the need for time-consuming synchronization procedures. This self-service mechanism maintains accurate optical axis adjustment while significantly improving communication establishment speed.

Inventive Principle:

Principle #25Self-service

3Ease of operation

If scanning signals with different pulse patterns are transmitted in forward and reverse directions, then ease of operation is improved by eliminating synchronization requirements, but device complexity increases

Engineering Contradiction:

Improvesynchronization requirement eliminationVSAvoidsignal pattern management complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The scanning signal transmission is segmented into forward and reverse directions, each with distinct pulse patterns. This segmentation allows the receiving device to determine direction based on reception intervals of differently patterned signals, simplifying operation by eliminating synchronization requirements while managing complexity through structured signal division.

Inventive Principle:

Principle #1Segmentation

4Ease of operation

If the reception device specifies direction based on reception intervals, then ease of operation is improved, but measurement precision requirements increase

Engineering Contradiction:

Improveautomatic direction specificationVSAvoidreception interval measurement accuracy

Core Design Contradiction:

Ease of operationVSMeasurement precision

Solution Approach 1:

The invention uses different pulse patterns in forward and reverse directions to create measurable reception interval differences. By changing the signal parameters (pulse patterns) based on transmission direction, the system enables automatic direction specification through reception interval measurement, improving ease of operation while maintaining measurement precision through parameter differentiation.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS20240372624A1Communication control device, communication device, communication control method, and recording medium

Publication Date: 2024.11.07 NEC CORP

AI summary

A communication control device that causes a transmitting device to transmit a scanning signal of a pulse pattern different between a first period and a second period, specify a direction of transmission of the scanning signal transmitted from a communication target according to a reception interval between the pulse pattern of the scanning signal transmitted from the communication target in the first period and the pulse pattern of the scanning signal transmitted from the communication target in the second period in response to reception of the scanning signal transmitted from the communication target by a receiving device, and transmit a notification signal of the pulse pattern relevant to the specified direction of transmission of the scanning signal to a transmitting device toward the communication target.