Radio Relay Device Role Switching for Avalanche Disruption
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Solution Overview
Problem
In mountainous areas where wired communication infrastructure is difficult to install, radio communication network systems face disruptions due to avalanches, leading to disconnection between access points (APs) and terminals, as existing systems lack effective mechanisms to maintain communication continuity during natural disasters.
Innovation Solution
The system employs radio relay devices equipped with acceleration sensors to monitor movement and increase radio signal intensity, allowing adjacent devices to maintain communication and automatically switch roles to ensure continuous service when communication risks exceed predetermined thresholds, thereby preventing disconnection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If radio communication network systems are deployed in mountainous areas without wired infrastructure, then communication coverage is achieved in difficult-to-reach areas, but communication continuity is disrupted by natural disasters such as avalanches
Solution Approach 1:
The system performs preliminary actions by detecting movement in advance using acceleration sensors before communication disruption occurs. When movement exceeding a threshold is detected, the system proactively switches to a relay communication mode through pre-established communication with the operation server, preventing communication disruption before it happens rather than reacting after disruption occurs.
Solution Approach 2:
The operation server acts as an intermediary that coordinates communication between access points and terminals. When an access point detects movement and switches to relay mode, the operation server manages the relay communication path through another access point, ensuring continuous service. This intermediary coordination enables seamless failover without direct disruption to the terminal's communication.
2Reliability
If access points use acceleration sensors to detect movement and switch to relay communication mode, then communication continuity is maintained during avalanches, but device complexity and energy consumption increase
Solution Approach 1:
The access point performs self-service by autonomously detecting its own movement using an acceleration sensor and automatically switching to relay communication mode without requiring manual intervention. The system independently monitors its operational status, detects anomalies, and executes failover procedures, reducing the need for complex external control systems while maintaining high reliability.
Solution Approach 2:
The system changes operational parameters dynamically based on detected conditions. When movement exceeds a threshold, the access point changes its communication mode parameter from direct communication to relay communication. This parameter-based control simplifies the decision logic compared to complex rule-based systems, enabling automatic adaptation to changing environmental conditions.
3Reliability
If access points increase radio signal intensity during movement, then communication connectivity is maintained, but energy consumption increases
Solution Approach 1:
The system dynamically adjusts radio signal intensity based on real-time movement detection and communication quality assessment. Rather than maintaining high signal intensity continuously, the access point increases power only when movement is detected and communication quality degrades, then reduces power when conditions improve. This dynamic adaptation maintains connectivity during critical moments while minimizing unnecessary energy consumption during stable periods.
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
This solution ensures continuous radio communication and communication services even during avalanches by enabling adjacent devices to take over roles and maintain connectivity, improving the reliability and availability of the radio communication network.
Implementation Method 1
The radio relay device includes an acceleration sensor and determines, based on a value detected by the acceleration sensor, whether or not the radio relay device is moving
Data Source
AI summary
An apparatus is configured to detect a predetermined physical amount and relay communication between a network and a terminal. The apparatus calculates a communication disabling risk based on the predetermined physical amount, and notifies another apparatus of takeover of a process of relaying the communication between the network and the terminal when the communication disabling risk is equal to or greater than a predetermined threshold.