Vehicle Emergency Report Relay Using Stop Control in V2V Range
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Solution Overview
Problem
Existing emergency report systems in vehicles fail to ensure reliable transmission of emergency reports when vehicles are outside network communication range, leading to incomplete or lost reports due to relay vehicles moving out of V2V communication range.
Innovation Solution
The system implements a processor that determines if a vehicle is stoppable and executes vehicle stop control to keep the vehicle stopped until report information is received, and if not stoppable, reduces the report information amount to ensure transmission completion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the relay vehicle continues moving to maintain normal operation, then the vehicle's mobility is preserved, but the emergency report transmission may be incomplete or lost due to moving out of V2V communication range
Solution Approach 1:
The system dynamically adjusts the relay vehicle's operation state based on communication needs. When emergency report reception is in progress, the vehicle is controlled to stop to maintain communication connection. When communication is complete, the vehicle resumes normal movement. This dynamic state adjustment resolves the contradiction between maintaining reliability during transmission and preserving mobility overall.
Solution Approach 2:
The system performs preliminary assessment of the vehicle's stoppability before initiating the stop control. By evaluating whether the vehicle can be stopped safely before the communication range is lost, the system ensures that reliability measures are taken only when feasible, avoiding unnecessary disruption to vehicle mobility while still protecting against report loss when possible.
2Reliability
If the vehicle stops to complete report reception, then transmission reliability is improved, but time is lost due to vehicle interruption
Solution Approach 1:
The system applies stop control selectively rather than universally. It performs partial action by stopping only when the vehicle is determined to be stoppable and when report reception is in progress. This partial application of the stop action achieves the necessary reliability improvement without incurring unnecessary time losses from unnecessary stops.
Solution Approach 2:
The system performs preliminary evaluation of stoppability before executing the stop control. By assessing whether the vehicle can be safely stopped before initiating the stop, the system avoids situations where stopping would be unsafe or impractical, thereby minimizing time loss while still ensuring reliability when feasible.
3Speed
If the vehicle moves quickly to reach network coverage area, then response time is reduced, but report transmission may be interrupted due to moving out of V2V range
Solution Approach 1:
The system dynamically adjusts vehicle speed based on the reception status of emergency reports. When report reception is in progress, the vehicle slows down or stops to maintain V2V communication connection. When reception is complete or not in progress, the vehicle maintains normal speed. This dynamic speed adjustment ensures both speed and transmission reliability.
Data Source
AI summary
An emergency report system is applicable to a vehicle configured to establish vehicle-to-vehicle communication and includes a processor and a communicator. The communicator is configured to perform transmission and reception of report information. The processor is configured to, when the communicator starts receiving the report information, determine whether the vehicle is stoppable, and when determining that the vehicle is stoppable, execute vehicle stop control of stopping the vehicle and keeping the vehicle stopped until the reception of the report information is completed.