V2X Simulation Synchronization via Log Data Reproduction
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Solution Overview
Problem
Existing systems for simulating vehicle-to-everything (V2X) communication services struggle to connect multiple vehicle terminals for synchronized communication, limiting their ability to provide high-reliability results in various environments.
Innovation Solution
A system comprising a first terminal that receives and transmits log data from vehicle terminals, and a second terminal that synchronizes system time and adjusts log data reproduction times, enabling communication and simulation across multiple vehicle terminals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing simulation systems are used for V2X services, then individual vehicle terminal simulation is possible, but communication between multiple terminals cannot be performed and system-wide synchronization is limited
Solution Approach 1:
The system divides the simulation function into two segments: a first terminal that generates and transmits log data, and a second terminal that receives and processes the log data. This segmentation enables specialized functions for each terminal while maintaining overall system capability for multi-terminal communication and synchronization.
Solution Approach 2:
The first terminal acts as an intermediary that bridges the gap between individual vehicle terminal simulations and system-wide synchronized communication. It collects log data from multiple vehicles and transmits it to the second terminal, enabling coordinated multi-terminal simulation while maintaining simulation reliability.
2Productivity
If log data from multiple vehicles is processed simultaneously, then comprehensive V2X service verification is possible, but system time synchronization becomes complex and difficult to manage
Solution Approach 1:
The second terminal automatically performs time synchronization by extracting timing information from the transmitted log data and adjusting its system clock accordingly. This self-service approach eliminates the need for complex external synchronization mechanisms while enabling efficient processing of multi-vehicle log data.
Solution Approach 2:
The first terminal prepares and transmits timing information along with the log data before the second terminal processes the data. This preliminary action of including synchronization information in the data transmission simplifies the overall synchronization process and enables efficient parallel processing of multiple vehicle logs.
3Ease of operation
If log data reproduction is performed without time adjustment, then processing is simpler and faster, but synchronization accuracy across multiple terminals deteriorates
Solution Approach 1:
The second terminal dynamically adjusts the reproduction time of log data based on the received timing information and system time synchronization results. This parameter change approach maintains operational simplicity while achieving accurate time synchronization by modifying only the time parameter during data reproduction.
Data Source
AI summary
Provided is a system for verifying a vehicle-based communication service through simulation based on various environments. The system includes a first terminal configured to receive log data and output data from a vehicle terminal equipped in each of a plurality of vehicles, transmit the log data and a reproduction command signal corresponding to the log data, and display the output data and a second terminal configured to receive the log data from the first terminal to upload the log data, perform synchronization of a corresponding system time, and adjust a reproduction time of each of pieces of log data to a predetermined reference point according to the reproduction command signal.