Vehicle Certificate Proxy via RSU When Uu Signal Fails
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Solution Overview
Problem
Vehicles face challenges in obtaining a real-name certificate when the Uu interface is unavailable or signal quality is poor, hindering access to specific internet of vehicles application services.
Innovation Solution
A vehicle-mounted device utilizes a PC5 interface to send a certificate proxy application message to a roadside unit, which forwards the request to a third-party authority for identity certificate generation, enabling certificate acquisition even in environments with poor Uu interface signal quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle-mounted device uses the Uu interface to apply for a real-name certificate from the certificate authority, then the certificate application process can be completed through standard communication protocols, but the process fails when the Uu interface is unavailable or signal quality is poor
Solution Approach 1:
The patent introduces a roadside unit as an intermediary device between the vehicle-mounted device and the certificate authority. When the Uu interface is unavailable, the vehicle-mounted device sends the certificate application message to the roadside unit, which then forwards it to the certificate authority via the Uu interface. This mediator approach allows the system to maintain certificate application functionality even when direct communication between the vehicle and certificate authority is impossible.
Solution Approach 2:
The patent adds an alternative communication dimension by utilizing the PC5 interface (vehicle-to-infrastructure direct communication) in conjunction with the roadside unit, rather than relying solely on the Uu interface (vehicle-to-network communication). This dimensional change provides a backup pathway for certificate applications when the primary Uu interface is unavailable.
2Ease of operation
If the vehicle-mounted device sends certificate application information through the Uu interface, then direct communication with the certificate authority is established, but communication fails in environments such as tunnels or underground garages
Solution Approach 1:
The roadside unit serves as a mediator that receives certificate application messages from the vehicle-mounted device via PC5 interface and forwards them to the certificate authority through the Uu interface. This intermediary approach enables certificate applications in environments where direct vehicle-to-certificate authority communication is blocked, such as tunnels or underground garages.
3Adaptability or versatility
If the system requires Uu interface availability for certificate applications, then standard communication protocols can be used, but service access is hindered when signal quality is insufficient
Solution Approach 1:
The patent implements a dynamic certificate application mechanism that automatically selects the available communication path. The vehicle-mounted device first attempts to use the Uu interface for certificate applications, and when this fails (detected through signal quality assessment), it dynamically switches to using the PC5 interface with roadside unit assistance. This dynamic adaptation ensures continuous service access regardless of signal conditions.
Solution Approach 2:
The system is designed to support multiple communication interfaces (Uu interface and PC5 interface) for certificate applications. The roadside unit is equipped with both PC5 interface capabilities for receiving messages from vehicles and Uu interface capabilities for communicating with the certificate authority, making it a universal node that can operate in various communication scenarios.
Data Source
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AI summary
This application relates to the field of internet of vehicles technologies, and specifically, to a vehicle certificate application method, a vehicle-mounted device, and a roadside unit. The method includes: When a Uu interface of a vehicle-mounted device is unavailable or signal quality of a Uu interface is lower than a threshold, the vehicle-mounted device sends a certificate proxy application message to a roadside unit RSU, where the certificate proxy application message includes certificate application information of a vehicle to which the vehicle-mounted device belongs, and the certificate application message is forwarded by the RSU to a third-party authority; and the vehicle-mounted device receives a certificate proxy application response from the RSU, where the certificate proxy application response includes an identity certificate of the vehicle, and the identity certificate is generated by the third-party authority based on the certificate application information and sent to the RSU. According to the method, when the Uu interface of the vehicle-mounted device is unavailable or the signal quality of the Uu interface is poor, the identity certificate may be applied for through a PC5 interface.