Satellite Communication Device Availability Determination
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Solution Overview
Problem
Existing satellite communication systems incur high fees due to measured rate systems, where fees are charged even for checking communication availability, as existing methods require actual communication to determine line status.
Innovation Solution
A satellite communication device with a determiner and notifier that assesses communication availability using local network information without actual WAN communication, generating a communicable signal to indicate availability, allowing for fee reduction by avoiding unnecessary satellite communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If actual satellite communication is performed to check communication availability, then accurate communication status can be determined, but communication fees are incurred
Solution Approach 1:
The invention creates a virtual copy of the satellite communication path by establishing a virtual communication path between the satellite communication devices and the LAN. This virtual path allows communication status checking without actually transmitting data through the satellite, thus maintaining measurement accuracy while avoiding communication fees.
Solution Approach 2:
The invention introduces a communication status checking mechanism that acts as an intermediary. Instead of directly checking communication status through actual satellite communication, the system uses a mediating process that determines availability based on virtual path establishment and device responsiveness, thereby avoiding direct satellite communication costs.
2Reliability
If satellite communication is always available to ensure continuous connectivity, then communication reliability is improved, but communication cost increases
Solution Approach 1:
The invention implements periodic communication status checking through the virtual path establishment process. Instead of maintaining continuous satellite communication, the system periodically checks availability by attempting to establish virtual paths and send status requests, thereby ensuring reliability while minimizing communication costs.
Solution Approach 2:
The satellite communication devices perform self-diagnosis and status checking through the virtual communication path. The devices can independently determine their own communication availability and switch between active and standby states without requiring continuous external verification, reducing the need for costly ongoing satellite communication.
3Reliability
If communication status checking is performed frequently to ensure availability, then communication reliability is improved, but communication fees increase
Solution Approach 1:
The invention performs preliminary checks by attempting to establish virtual communication paths before actual communication is needed. This preliminary action allows the system to pre-determine communication availability and switch to standby modes when possible, reducing the frequency of actual satellite communication required for status verification.
Data Source
AI summary
A satellite communication device is provided. The satellite communication device includes a determiner for determining availability of communication from a terminal to a WAN based on determination information acquirable from either one of communication via a LAN and the device itself without performing communication via the WAN, and for generating, when the communication from the terminal to the WAN is available, a communicable signal indicating the communication to the WAN being available. The satellite communication device also includes a notifier for receiving, from the terminal, a communication checking signal for requesting to check the availability of the communication to the WAN, and transmitting, when the communication from the terminal to the WAN is available, the communicable signal to the terminal.