Vehicle Access Control via State Shadow Indexing
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Solution Overview
Problem
Current mobility services lack accurate vehicle access control mechanisms, which hinder efficient and reliable access to vehicles based on their real-time states.
Innovation Solution
A mobility service base server system that includes a vehicle-side unit with a database storing 'shadows' representing vehicle states and a service-side unit with an index database for retrieving these shadows, along with an interface for receiving access requests and determining necessary control instructions for in-vehicle devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If control instructions are transmitted without checking vehicle state, then response speed is improved, but reliability deteriorates due to unnecessary or inappropriate control actions
Solution Approach 1:
The system performs preliminary actions by storing shadows (vehicle state snapshots) in advance and creating indexes for quick retrieval. When a control request arrives, the vehicle control unit checks the stored shadow to determine current vehicle state before executing control instructions, ensuring reliability without sacrificing response speed.
2Ease of operation
If all access requests are processed by transmitting control instructions, then ease of operation is improved, but loss of energy increases due to unnecessary communications
Solution Approach 1:
The vehicle control unit autonomously determines whether control instructions are necessary by checking the vehicle state stored in shadows against the access request requirements. This self-service mechanism filters out unnecessary control transmissions, reducing communication energy consumption while maintaining ease of operation for legitimate requests.
3Reliability
If vehicle state checking is implemented before control transmission, then reliability is improved, but device complexity increases due to additional database and indexing requirements
Solution Approach 1:
Instead of querying the complex real-time vehicle system to check state, the invention uses simplified copies (shadows) of vehicle state data that are stored and updated periodically. These shadows with their indexes provide a lightweight representation that enables reliable state checking without the complexity of real-time system queries.
4Measurement precision
If shadows are stored for each vehicle with detailed indexing, then measurement precision is improved for state retrieval, but volume of substance increases due to data storage requirements
Solution Approach 1:
The system extracts only the essential state information needed for control decisions into shadows, rather than storing complete vehicle data sets. The indexing mechanism extracts key retrieval paths, allowing precise state lookup while minimizing stored data volume by keeping only the most relevant information for each shadow.
Data Source
AI summary
The mobility service base server includes: a vehicle-side unit including a first database that is generated for each vehicle based on vehicle data and stores a plurality of shadows representing state of the vehicle at a specific time; and a service-side unit including a second database that stores an index corresponding to each of the shadows stored in the first database and having information used for retrieving the shadows, and an interface unit configured to receive an access request from outside. The vehicle-side unit includes a vehicle control unit transmitting a control instruction according to the access request to the in-vehicle device mounted on a target vehicle. The vehicle control unit determines necessary or unnecessary instruction for the target vehicle according to the state of the target vehicle stored in the first database.