Communication Control Apparatus Ionospheric Reflection Reliability
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Solution Overview
Problem
Communication between a base station and a communication terminal using ionospheric reflection is unreliable due to changing radio wave paths and ionospheric conditions, leading to failed message transmissions, especially in scenarios like ship-to-coast communication where satellite communication is expensive and not always reliable.
Innovation Solution
A communication control system that receives communication results from multiple base stations, stores failed message transmissions with identification information, and uses successful communication conditions to retry transmissions via proxy base stations, improving reliability by modifying frequency and transfer speed based on past successful communication records.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If communication uses ionospheric reflection, then communication cost is reduced and coverage is extended, but transmission reliability deteriorates due to changing radio wave paths and ionospheric conditions
Solution Approach 1:
The system performs preliminary actions by storing communication results (including successful transmissions and failures) in advance. When a new communication attempt is needed, the system retrieves past communication results to determine appropriate transmission parameters, thereby preparing and utilizing historical data to improve current transmission reliability without requiring real-time analysis of all possible scenarios.
Solution Approach 2:
The system implements feedback by using stored communication results from previous transmissions to influence future transmission decisions. The communication control apparatus refers to past successful communication conditions when determining parameters for new transmissions, creating a closed-loop system that continuously improves reliability based on actual performance data.
2Adaptability or versatility
If multiple base stations are used to improve coverage, then communication availability increases, but system complexity increases due to need to manage multiple communication results and storage operations
Solution Approach 1:
The communication control apparatus performs multiple functions using a single integrated system: it receives communication results from multiple base stations, stores them in association with terminal identification information, refers to stored results for new transmissions, and controls transmission parameters. This multi-functional approach improves communication availability across multiple base stations while avoiding the need for separate management systems for each base station.
Solution Approach 2:
The system merges the management of multiple base station communication results into a single unified storage structure. By associating communication results with terminal identification information in one storage system, the apparatus simplifies the management of multiple base stations while maintaining the ability to retrieve and utilize specific communication history for each terminal.
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 the reliability of message transmission to mobile communication terminals by using stored successful communication conditions and proxy transmission methods, ensuring that messages are delivered even in unreliable ionospheric conditions.
Implementation Method 1
communication between a base station disposed at each of a plurality of principal localities defined in advance and a communication terminal present at an arbitrary location
Data Source
AI summary
A non-transitory computer-readable recording medium having stored therein a communication control program for causing a computer to execute a process includes: receiving, from each of a plurality of base stations, communication result between the respective base stations and a communication terminal; storing, when the received communication result indicates that transmission of a message from a first base station to a specific communication terminal is failed, the message in a storage in association with identification information on the specific communication terminal; and referring, when the received communication results indicates that communication is established between a second base station and the specific communication terminal, to the storage, transmitting the message stored in association with the identification information on the specific communication terminal to the second base station, and requesting the second base station to transmit the message to the specific communication terminal.