Vehicle-End Device Cloud Server Interaction for Roadside Unit Access
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Solution Overview
Problem
Conventional methods for autonomous vehicles to access roadside units are time-consuming due to cumbersome verification processes, and they often interfere with static roadside equipment's signal transmit power.
Innovation Solution
The method involves a vehicle-end device interacting with a cloud server to obtain pre-stored high-definition maps, which include attribute information of roadside facilities, allowing for direct access to roadside units and adaptive adjustment of signal transmit power to avoid interference, thereby reducing access time and ensuring reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the autonomous vehicle performs authentication and verification procedures to access the roadside unit, then the access reliability is improved, but the access time increases
Solution Approach 1:
The cloud server performs authentication and generates initialization information in advance before the vehicle needs to access the roadside unit. The vehicle-end device obtains this pre-generated initialization information from the cloud server, eliminating the need for time-consuming on-site verification procedures while maintaining security and reliability
Solution Approach 2:
The cloud server acts as an intermediary between the vehicle-end device and the roadside unit. It handles the authentication and verification processes centrally, allowing the vehicle to obtain access credentials without performing complex verification procedures locally, thus reducing access time while ensuring reliable authentication
2Length of moving object
If the vehicle-end device transmits signals at high power, then the communication range is improved, but interference to static roadside equipment increases
Solution Approach 1:
The vehicle-end device dynamically adjusts its signal transmit power based on real-time conditions and received instructions from the cloud server. Instead of using fixed high power, the device adapts its transmission power to maintain adequate communication range while minimizing interference to static roadside equipment, achieving a balanced operational state
Solution Approach 2:
The cloud server determines and communicates the appropriate signal transmit power parameters to the vehicle-end device based on the high-definition map data and environmental conditions. The vehicle-end device changes its transmission power parameter according to these instructions, optimizing the balance between communication range and interference reduction
Data Source
AI summary
A data processing method includes initiating, to a cloud server, a first message used to access a roadside device or used to obtain signal transmit power-related information of static roadside equipment, receiving a second message fed back by the cloud server, where the second message is determined by the cloud server based on the first message and a prestored high-definition map, and the second message includes related information about accessing the roadside device by the vehicle-end device, or the signal transmit power-related information of the static roadside equipment, and accessing the roadside device based on the second message or determining a signal transmit power of the vehicle-end device based on the second message.