Vehicle Roadside Token Communication for Traffic Management
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Solution Overview
Problem
Current methods for vehicle-to-roadside communication lack an optimized mechanism for exchanging data between vehicles and roadside devices, particularly in managing traffic flow, toll collection, and detecting traffic violations efficiently.
Innovation Solution
A method and system that involve transmitting token information between roadside devices and vehicles, allowing for the generation and modification of token information as vehicles move between devices, enabling the collection of geographic and time-related data to determine average speed and track vehicle usage, facilitating improved traffic management and toll systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If token information is transmitted between multiple roadside devices and vehicles, then data exchange capability is improved, but communication system complexity increases
Solution Approach 1:
The patent introduces token information as an intermediary element that facilitates communication between roadside devices and vehicles. The token acts as a mediator carrying identification and authentication data, enabling standardized data exchange without requiring complex direct communication protocols between all devices. This intermediary mechanism simplifies the overall system architecture while improving data exchange capability.
Solution Approach 2:
The token information structure serves multiple functions simultaneously: it contains identification data for roadside devices, authentication credentials, timing information, and communication protocol parameters. By consolidating these multiple functions into a single universal token structure, the system achieves improved adaptability without proportionally increasing complexity.
2Measurement precision
If vehicle communication messages include token information for identification, then measurement precision is improved, but message transmission time increases
Solution Approach 1:
The system performs preliminary authentication and identification actions by exchanging token information before the actual data transmission between roadside devices and vehicles. This preliminary action ensures that only authenticated devices can communicate, improving measurement precision for vehicle tracking. The token exchange is performed efficiently with minimal overhead, so the time penalty is acceptable given the security and precision benefits.
Solution Approach 2:
The patent optimizes the balance between message size and transmission time by carefully designing the token information structure. Critical identification parameters are included in the token, while optional detailed information can be added or removed based on communication requirements. This parameter flexibility allows the system to adjust message content to minimize transmission time while maintaining necessary measurement precision.
3Productivity
If multiple roadside devices transmit data to vehicles, then traffic monitoring capability is improved, but energy consumption increases
Solution Approach 1:
The system implements periodic data exchange protocols where roadside devices transmit information to vehicles at scheduled intervals rather than continuously. The token information includes timing parameters that coordinate these periodic transmissions, allowing vehicles to monitor traffic conditions efficiently without constant communication. This periodic action maintains traffic monitoring capability while significantly reducing energy consumption compared to continuous data exchange.
Solution Approach 2:
The vehicle's telecommunications device autonomously manages the data exchange process by receiving token information from multiple roadside devices and selectively processing relevant traffic data. The vehicle itself controls when to request additional information and when to rely on previously received data, reducing unnecessary communication and energy consumption while maintaining effective traffic monitoring capability.
Data Source
Figure 1~2
AI summary
A method is described for communication between, on the one hand, a vehicle telecommunications device or a vehicle and, on the other hand, a plurality of roadside devices by transmitting vehicle communication messages between the vehicle telecommunications device or the vehicle and the roadside devices, wherein the plurality of roadside devices comprises at least a first roadside device and a second roadside device, wherein the method comprises the following steps: -- in a first step, a first vehicle communication message is transmitted from the first roadside device to the vehicle telecommunications device or to the vehicle, wherein the first vehicle communication message comprises a first token information,-- In a second step following the first step, a second vehicle communication message is transmitted from the vehicle telecommunications equipment or the vehicle to a second roadside equipment, wherein the second vehicle communication message either includes the first token information or wherein the second vehicle communication message includes second token information generated or modified by the vehicle telecommunications equipment or in the vehicle based on the previously received first token information,