Receiving Device Keep Alive Signal Synchronization for Incommunicable State Detection
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Solution Overview
Problem
In monitoring systems, determining the communication state of a communication device requires exchanging confirmation and acknowledgment signals, increasing data transmission and network load.
Innovation Solution
A receiving device generates monitoring-side keep alive signals at timings synchronized with communication devices, estimating a communication device as incommunicable if the number of received keep alive signals is lower, without transmitting a confirmation signal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the receiving device transmits a confirmation signal and the communication device transmits an acknowledgment signal to determine communication state, then the communication state can be accurately determined, but the amount of data exchanged increases
Solution Approach 1:
The invention extracts only the essential information needed for communication state determination by using keep alive signals that are already being transmitted for other purposes. Instead of adding separate confirmation and acknowledgment signals, the system reuses existing periodic keep alive signals from communication devices and matches them with monitoring-side keep alive signals, thereby determining communication state without increasing data exchange volume.
Solution Approach 2:
The keep alive signals serve multiple functions: they maintain communication links and simultaneously enable communication state determination. By making the keep alive signals multi-functional, the system eliminates the need for separate confirmation and acknowledgment signals, reducing the total amount of data exchanged while maintaining accurate communication state monitoring.
2Reliability
If confirmation signals and acknowledgment signals are transmitted to monitor communication devices, then communication state can be determined, but network load increases
Solution Approach 1:
Communication devices themselves transmit keep alive signals that serve as indicators of their communication state. By monitoring whether these self-generated signals are received at the monitoring server, the system determines communication state without requiring additional confirmation or acknowledgment signals from other devices, thereby reducing network load while maintaining monitoring reliability.
3Ease of operation
If the receiving device uses the number of received keep alive signals compared to generated keep alive signals, then communication devices in incommunicable state can be specified without transmitting confirmation signals
Solution Approach 1:
The invention replaces the mechanical communication process of transmitting confirmation and acknowledgment signals with a computational analysis method. By comparing the numbers of generated and received keep alive signals, the system infers communication state information without requiring additional signal transmissions, thereby simplifying operations while preserving complete communication state information.
Data Source
AI summary
A receiving device includes processing circuitry to determine timings for generating monitoring-side keep alive signals at same timings as timings when a plurality of communication devices transmit monitored-side keep alive signals, to generate a plurality of monitoring-side keep alive signals at a plurality of timings determined, and to estimate a communication device in an incommunicable state based on a comparison result of a number of monitoring-side keep alive signals generated thereafter and a number of monitored-side keep alive signals received thereafter when the plurality of monitoring-side keep alive signals are generated, if a number of the received monitored-side keep alive signals is smaller than a number of the generated monitoring-side keep alive signals.