Vehicle Communication System Access Point Selection
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Solution Overview
Problem
Conventional vehicle communication systems often experience disconnection from external communication networks due to passing through connectable regions of access points during authorization, leading to repetitive authorization processes and potential network loss.
Innovation Solution
A vehicle communication system that includes a communication module, a position acquirer, a vehicle speed acquirer, and an in-vehicle controller, which determines the optimal access point to connect based on vehicle position and speed information, prioritizing connection to access points farther away at higher speeds to minimize disconnection and reduce repetitive authorization processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the in-vehicle wireless LAN connection terminal determines an access point based on vehicle position only, then the connection process is simple, but the terminal passes through connectable regions during authorization causing disconnection
Solution Approach 1:
The system performs preliminary actions by acquiring vehicle speed information and using it to predict future position, then determines the access point in advance based on this predicted position. This preliminary determination prevents the terminal from passing through connectable regions during authorization, ensuring stable connection while maintaining relatively simple selection logic.
2Speed
If the terminal connects to the nearest access point, then connection speed is fast, but the terminal frequently disconnects when moving at high speed
Solution Approach 1:
The system dynamically adjusts access point selection based on vehicle speed conditions. When vehicle speed is low, it selects the nearest access point for fast connection. When vehicle speed is high, it selects an access point that is farther away but ensures continuous connection by preventing passage through connectable regions during authorization. This dynamic adjustment maintains both connection speed and continuity.
3Productivity
If the terminal performs authorization process while moving through access point coverage, then connection is established, but repetitive authorization causes network loss
Solution Approach 1:
The system performs preliminary determination of the access point using vehicle speed and position information before the authorization process begins. This ensures the terminal connects to an access point where the authorization will complete successfully without passing through the connectable region, preventing repetitive authorization and network loss.
Data Source
AI summary
A vehicle communication system includes an in-vehicle router. The in-vehicle router includes a Wi-Fi module, a GPS, a vehicle speed acquirer, and an in-vehicle CPU. The Wi-Fi module is a module mounted on a vehicle and provided connectable to an access point of a wireless LAN. The GPS acquires vehicle position information indicating the position of the vehicle. The vehicle speed acquirer acquires vehicle speed information indicating the speed of the vehicle. The in-vehicle CPU determines the access point to be connected to the Wi-Fi module based on the vehicle position information and the vehicle speed information.