Phone-as-a-Key Localization Switching for Secure Remote Vehicle Motion
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Solution Overview
Problem
Existing remote vehicle motive control systems face challenges in accurately localizing a mobile device with respect to a vehicle without a key fob, particularly in reducing computational load and maintaining vehicle security.
Innovation Solution
The system employs an initial high-fidelity starting point for mobile device localization, followed by low-fidelity measurements using a single Bluetooth Low Energy (BLE) antenna, to reduce computational load while maintaining accurate localization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high-fidelity localization is used continuously, then measurement precision is improved, but use of energy increases and device complexity increases
Solution Approach 1:
The system dynamically switches between high-fidelity and low-fidelity localization methods based on the vehicle's operational state. High-fidelity localization using multiple BLE antennas is activated only when the vehicle is in non-motive states (parked or stationary), while low-fidelity localization using a single BLE antenna is used during motive operations. This dynamic adaptation resolves the contradiction by providing high precision when needed for security purposes while conserving energy during active operation.
Solution Approach 2:
The system implements periodic high-fidelity localization measurements at specific intervals (when the vehicle transitions to non-motive states) rather than continuous measurements. This periodic activation of the high-fidelity localization system allows the patent to maintain measurement precision requirements while significantly reducing overall computational load and energy consumption during extended operational periods.
2Measurement precision
If multiple BLE antennas are used for localization, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The system dynamically configures the number of active BLE antennas based on operational requirements. During non-motive states, all multiple BLE antennas are activated to provide high-fidelity localization with superior measurement precision. During motive operations, the system switches to using only a single BLE antenna, reducing system complexity and computational burden while maintaining adequate localization capability for safety-critical operations.
Solution Approach 2:
The localization system is segmented into two distinct operational modes: high-fidelity mode using multiple BLE antennas for precise localization during stationary periods, and low-fidelity mode using a single BLE antenna during motive operations. This segmentation allows the patent to optimize the system configuration for each operational context, reducing overall complexity while maintaining measurement precision when required.
3Measurement precision
If high-fidelity localization is used, then measurement precision is improved, but power consumption increases
Solution Approach 1:
The high-fidelity localization system is activated periodically only during non-motive states when the vehicle is parked or stationary, rather than continuously. This periodic operation allows the system to gather precise localization data when needed for security and authentication purposes while minimizing power consumption during extended motive operation periods where high precision is less critical.
Solution Approach 2:
The system dynamically adjusts its localization fidelity and corresponding power consumption based on the vehicle's operational state. During non-motive states, the system transitions to high-fidelity localization with higher power consumption to ensure precise user positioning for security purposes. During motive operations, the system switches to low-fidelity localization with reduced power consumption, optimizing the balance between precision requirements and energy efficiency.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach effectively reduces the computational resources needed for mobile device localization, enhancing the usability and security of remote vehicle control systems by maintaining accurate localization and reducing power consumption.
Implementation Method 1
determining a geographic position of a mobile device via a high-fidelity Phone-as-a-Key (PaaK) localization system
Data Source
AI summary
A device localization system for a vehicle and a mobile device configured as a Phone-as-a-Key (PaaK) is described. The system includes a fob-free mode for performing remote control vehicle features using a selective mobile device localization technique that reduces motive functionality of the vehicle, based location of a user performing the vehicle control during the remote-control operation. The system determines a geographic position of a user using a single Bluetooth® Low Energy (BLE) antenna, and establishes establish a high-fidelity zone based on a change in mobile device position. The system reduces a motive functionality of the vehicle, based on the selective mobile device localization, from a first motive mode having a full motive functionality to a second motive mode responsive to determining that the mobile device is not present in the high-fidelity zone.