Vehicle Communication Device Authentication Segmentation
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Solution Overview
Problem
Current inter-vehicle communication systems face delays due to the time-consuming authentication process in wireless LAN standards, particularly when using external authentication servers, which can lead to insufficient communication time for data exchange between vehicles.
Innovation Solution
A vehicle-mounted communication device equipped with an authentication unit and address management unit, capable of performing authentication and network address translation, reduces negotiation time by allowing each vehicle to manage its own authentication and address assignment, enabling faster data transmission through multi-hop communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external authentication servers are used in wireless LAN standards, then authentication security is improved, but authentication time increases
Solution Approach 1:
The patent segments the authentication process into two parts: essential authentication information is exchanged during the brief inter-vehicle communication window, while complete authentication with external servers occurs later when the vehicle is stationary or in coverage area. This segmentation allows security to be maintained while adapting to the time constraint of moving vehicle communication.
Solution Approach 2:
The patent performs preliminary authentication by exchanging essential authentication information during the brief inter-vehicle communication window before actual data transmission begins. This preliminary action reduces the authentication time during critical communication periods while maintaining security through subsequent completion of authentication when time is not constrained.
2Reliability
If conventional authentication sequences are used, then authentication completeness is improved, but negotiation time increases
Solution Approach 1:
The patent performs partial authentication during inter-vehicle communication by exchanging only essential authentication information rather than completing the full authentication sequence. This partial action is sufficient to enable immediate data transmission while the complete authentication is deferred to a later time when the vehicle is not in motion or is in coverage area.
3Reliability
If data transmission waits for complete authentication, then authentication reliability is improved, but communication responsiveness deteriorates
Solution Approach 1:
The patent performs preliminary authentication exchanges during the brief inter-vehicle communication window, obtaining essential authentication information before actual data transmission begins. This preliminary action enables immediate data transmission while maintaining authentication reliability through subsequent completion of the authentication process when time is not constrained.
Solution Approach 2:
The patent segments the authentication process so that essential authentication occurs during moving vehicle communication to enable immediate data transmission, while complete authentication occurs later. This segmentation resolves the contradiction between authentication reliability and communication responsiveness by separating the time-critical and non-time-critical parts of authentication.
Data Source
AI summary
A vehicle-mounted communication device for transmitting uplink data as data generated in a vehicle includes a first wireless communication unit configured to establish an uplink connection to a second vehicle-mounted communication device, a second wireless communication unit configured to establish a downlink connection to a third vehicle-mounted communication device, an authentication unit configured to authenticate the third vehicle-mounted communication device, an address management unit configured to assign a network address to the third vehicle-mounted communication device, and an address translation unit configured to perform translation of the network address assigned from the second vehicle-mounted communication device and the network address used by the vehicle-mounted communication device.