Vehicle Communication Credential Handoff for Secure Wireless Links
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Solution Overview
Problem
Vehicles face a trade-off between secure, slow wired communications and fast, insecure wireless communications, with wireless technologies being susceptible to attacks and message interception.
Innovation Solution
A communication system where vehicles share a security credential via a wired path to establish a secure wireless path using a different medium, ensuring only authorized devices can communicate, enhancing security and speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wired communication is used for vehicle-to-vehicle communication, then security is improved, but communication speed and bandwidth deteriorate
Solution Approach 1:
The patent segments the communication system into two distinct paths: a wired communication path for secure credential exchange and a wireless communication path for high-speed data transfer. This segmentation allows each path to be optimized for its specific function, resolving the contradiction between security and speed.
Solution Approach 2:
The patent uses security credentials as an intermediary mechanism. The wired connection serves as a secure intermediary channel to establish authentication tokens, which then enable the wireless connection to operate securely at high speeds. The intermediary credential bridges the security requirements of wired communication with the speed requirements of wireless communication.
2Speed
If wireless communication is used for vehicle-to-vehicle communication, then communication speed is improved, but security deteriorates due to susceptibility to attacks and message interception
Solution Approach 1:
The patent implements preliminary action by establishing security credentials through wired communication before the wireless communication begins. This pre-authentication process ensures that when high-speed wireless communication occurs, the security framework is already in place, preventing attacks and message interception.
Solution Approach 2:
The patent replaces the mechanical wired connection (which provides security through physical connectivity) with a cryptographic authentication system that works over wireless media. The security function traditionally provided by the mechanical wired connection is substituted with digital credentials and encryption mechanisms that enable secure wireless communication.
3Reliability
If wired communication is used, then security credential sharing is secure, but communication bandwidth is limited
Solution Approach 1:
The patent segments the communication functions by using wired connection exclusively for security credential exchange (a small, critical data set) and wireless connection for bulk data transfer. This segmentation allows the limited wired bandwidth to be used efficiently for security purposes while the wireless connection handles high-bandwidth requirements.
Data Source
AI summary
A communication system includes a first communication device located onboard a first vehicle in a vehicle system formed from the first vehicle and at least a second vehicle, a second communication device located onboard the second vehicle in the vehicle system, and a first communication path extending between the first and second communication devices and established using a first communication medium. The first and second communication devices may share a security credential via the first communication path. The first and second communication devices also may establish a secure second communication path between the first and second communication devices using the security credential that is shared via the first communication path. The second communication path established by the first and second communication devices uses a different, second communication medium extending between the first and second communication devices.