Data Transfer Path Calculation for Vehicle Relay Networks
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Solution Overview
Problem
Conventional techniques for data transmission from vehicles to servers through relay vehicles lack assurance that the data will reach the server, resulting in low delivery probability due to unreliable communication links.
Innovation Solution
A data transfer path calculation device that acquires travel plans and communication environment information for multiple vehicles and wireless base stations, determining a data transfer path through inter-vehicle communication to ensure data reaches the server via a relay vehicle with a reliable communication link.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data is transmitted from vehicle to server through relay vehicles using conventional techniques, then data transmission is enabled in mobile environments, but delivery probability is low due to unreliable communication links
Solution Approach 1:
The system performs preliminary acquisition of travel plans for multiple vehicles and communication environment information for wireless base stations before data transmission. The transfer path calculation section pre-calculates optimal relay paths by searching through acquired travel plans and communication environments, enabling the system to proactively select reliable relay vehicles and base stations before actual data transmission occurs, thereby improving delivery probability while managing complexity through advance planning
Solution Approach 2:
The invention introduces a server as an intermediary that coordinates between acquisition vehicles, relay vehicles, and wireless base stations. The server acquires travel plans, communication environment information, and calculates optimal transfer paths, acting as a central mediator that simplifies the complexity for individual vehicles while improving overall system reliability through centralized path optimization
2Adaptability or versatility
If multiple relay vehicles are used for data transmission, then data can be forwarded through inter-vehicle communication, but the complexity of path selection and coordination increases
Solution Approach 1:
The server performs multiple functions including acquiring travel plans from multiple vehicles, collecting communication environment information from wireless base stations, calculating optimal transfer paths, and coordinating data transmission across the entire vehicle network. This multi-functional approach increases adaptability for various transmission scenarios while centralizing complexity management, preventing individual vehicles from bearing excessive computational burden
3Reliability
If relay vehicles are selected without considering communication environment, then data transmission can proceed quickly, but delivery reliability decreases
Solution Approach 1:
The system acquires communication environment information for multiple wireless base stations and calculates optimal transfer paths in advance, before actual data transmission is needed. This preliminary path calculation considers communication reliability factors ahead of time, so when data needs to be transmitted, the system can quickly execute the pre-determined reliable path without time-consuming real-time analysis, thus maintaining both reliability and speed
Data Source
AI summary
A data transfer path calculation device includes: a travel plan acquisition section that acquires a travel plan composed of routes on which vehicles are estimated to travel and passage times at which the vehicles are estimated to pass through points on the routes; a communication environment acquisition section that, for each of wireless base stations, acquires communication environment information indicating a communication environment for communicating with the corresponding one of the wireless base stations at points; and a transfer path calculation section that searches for a data transfer path based on the travel plan and the communication environment information, the data transfer path being a path through which data sequentially passes, among the vehicles, from an acquisition vehicle through one or more relay vehicles by inter-vehicle communication and from a last relay vehicle among the relay vehicles, the data finally reaching a server via one of the wireless base stations.