Intermediate Vehicle Relay for Extended V2V Range
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Solution Overview
Problem
Current wireless communication systems between vehicles, such as V2V and V2I, face limitations in communication range and reliability due to blockages and interference, which can prevent timely alerts of critical road conditions to vehicles outside the direct communication range.
Innovation Solution
Implementing a method where an intermediate vehicle acts as a relay to extend communication range by receiving data from a host vehicle and retransmitting it to a target vehicle using DSRC protocols, verifying the source, altering and securing the message, and decoding it to ensure the target vehicle receives the alert as if it came directly from the host vehicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If DSRC wireless communication is used for V2V communication, then communication between vehicles can be achieved, but the communication range is limited to within 350 meters
Solution Approach 1:
The patent introduces intermediate vehicles as relay nodes to extend communication range. When a host vehicle cannot directly communicate with a target vehicle beyond 350 meters, the system automatically routes messages through intermediate vehicles within range, creating a multi-hop communication path that extends the effective communication distance while maintaining reliability through protocol verification and message authentication
2Length of stationary object
If infrastructure elements are used as repeaters to extend communication range, then messages can reach out of range vehicles, but infrastructure elements are not always available
Solution Approach 1:
The patent transforms the communication system from infrastructure-dependent to vehicle-self-sufficient by enabling vehicles to act as their own communication infrastructure. Each vehicle equipped with DSRC can function as a relay node, allowing the network to self-organize and extend coverage dynamically without requiring external infrastructure, thereby achieving both extended range and high availability
Solution Approach 2:
The system dynamically adapts the communication topology based on real-time vehicle positions and network conditions. Vehicles automatically join or leave the relay chain as they enter or exit communication range, creating a flexible, dynamic mesh network that maintains connectivity and extends range adaptively without fixed infrastructure dependencies
Data Source
AI summary
Vehicle-to-vehicle (V2V) communication through short range communication techniques can be extended by sending messages from a host vehicle to a target vehicle using an intermediate vehicle. The host vehicle identifies road conditions which may be of interest to a target vehicle. An intermediate vehicle relays the message detailing the identified road conditions from the host vehicle to the target vehicle. The message can be rebroadcast by the intermediate vehicle to target vehicles in its communication range, or it can generate a new message to transmit the information to target vehicles.