eCall Terminal Motion-Based Priority Access
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Solution Overview
Problem
Current eCall terminals in vehicles are delayed in emergency notifications due to activation only upon airbag deployment and incur excessive network signaling, especially when moving, necessitating a solution for immediate and efficient emergency communication.
Innovation Solution
A mobile terminal with an integrated emergency notification facility that dynamically changes system access priority based on motion and vehicle association, allowing for pre-emptive prioritization of eCall devices in the network, thereby reducing delay and signaling burden.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If eCall terminals are activated only upon airbag deployment, then device complexity is reduced and cost is lowered, but emergency notification delay increases
Solution Approach 1:
The eCall terminal is activated in advance before an accident occurs, during normal vehicle operation. The terminal performs preliminary registration with the network and maintains readiness to transmit emergency data. When an accident occurs, the terminal can immediately send location and accident data without requiring activation delay, thus resolving the contradiction between simplified activation mechanisms and rapid emergency response.
2Loss of time
If eCall terminals are continually activated in idle mode, then emergency notification delay is reduced, but network signaling burden increases
Solution Approach 1:
The eCall terminal autonomously determines whether it is in motion based on vehicle association status and independently adjusts its network access priority accordingly. When the terminal detects it is in motion or associated with a vehicle, it automatically requests and receives high-priority access rights from the network. This self-service mechanism eliminates the need for continuous network signaling to maintain readiness, as the terminal only actively manages its priority status when movement is detected, thus resolving the contradiction between rapid response and reduced signaling burden.
3Speed
If eCall terminals are given high access priority continuously, then emergency response speed is improved, but network resource allocation efficiency deteriorates
Solution Approach 1:
The system dynamically adjusts the access priority of eCall terminals based on real-time motion detection. Terminals in motion or associated with vehicles are granted high access priority to ensure rapid emergency response. Terminals at rest revert to normal priority levels, allowing network resources to be allocated efficiently to other users. This dynamic priority adjustment resolves the contradiction by providing high speed only when necessary (during motion) while maintaining network resource allocation efficiency during stationary periods.
Data Source
AI summary
A mobile terminal configured for use in a mobile telecommunications network, the mobile terminal having an emergency notification facility and an identifier, the identifier usable by the network to recognize the mobile terminal as having the emergency notification facility and to change a system access priority for the terminal, where required. Preferably, the terminal also includes a sensing means configured to determine when the mobile terminal is in motion and/or associated with a vehicle and notify the network of such, in order to allow the network to change the system access priority based upon whether or not the terminal is in motion and/or associated with a vehicle. In this regard, mobile terminals with an emergency notification facility, particularly when moving or in a vehicle, are given a higher priority so that an emergency call can be quickly dispatched in the event of an accident.