Wireless Data Link Establishment Between Physically Coupled Vehicles
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Solution Overview
Problem
Existing technologies face challenges in establishing a secure and automated wireless data connection between vehicles that are physically connected via a data interface, while preventing unauthorized connections with other vehicles.
Innovation Solution
The procedure involves transmitting connecting parameters via an existing physical data connection, such as a CAN bus according to ISO 11992, to establish a wireless data connection, specifically a WLAN connection, between vehicles. This ensures that only physically coupled vehicles establish a wireless connection, using parameters like SSID, password, and vehicle identifiers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a wireless connection is automatically established between vehicles, then the connection establishment time is reduced and automation is improved, but the risk of unauthorized connections with unintended vehicles increases
Solution Approach 1:
The patent applies preliminary action by establishing a wired physical connection before the wireless connection. The wired connection serves as a pre-requisite that must be established first, ensuring that only vehicles that are physically connected can subsequently establish wireless connections. This preliminary wired connection acts as a foundation that prevents unauthorized wireless connections while enabling automated connection establishment between authenticated vehicles.
2Reliability
If wireless connection parameters are transmitted via physical data connection, then connection security is improved, but the complexity of the connection establishment process increases
Solution Approach 1:
The patent merges the wired and wireless connection establishment processes into a unified sequence. The connection parameters for the wireless connection are transmitted through the already-established wired connection, combining the security benefits of wired transmission with the convenience of wireless communication. This merging approach ensures that the same physical connection that establishes the wired link also securely delivers the parameters needed for wireless connection, reducing overall system complexity.
3Reliability
If manual authentication is required for wireless connections, then connection security is improved, but the time required for connection establishment increases
Solution Approach 1:
The patent implements self-service by enabling the vehicles to automatically perform authentication and connection establishment without manual intervention. The connection parameters transmitted through the wired connection contain all necessary information for automatic authentication, allowing the vehicles to independently verify each other and establish both wired and wireless connections autonomously. This eliminates the need for manual authentication steps while maintaining security through automated verification processes.
Data Source
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AI summary
The invention relates to a method for establishing a wireless data link between at least two vehicles (10, 11) which are interconnected via a physical data link (12). According to the invention, first, connection parameters of the wireless link are transmitted via the physical data link (12), whereupon the wireless link is established using the connection parameters.