Vehicle Wireless Scheduling for Centimeter-Level Portable Device Tracking
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Solution Overview
Problem
Current methods for locating and tracking portable devices within a vehicle are inefficient and lack precision, particularly in defining and utilizing communication schedules to accurately determine the location of multiple devices using different wireless communication methods.
Innovation Solution
A vehicle system employing a first communication device using a first wireless method and multiple second communication devices at known locations, defines a communication schedule with designated sessions for portable devices to communicate via a second wireless method, enabling location detection and tracking through message exchange and signal analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple wireless communication methods are used to locate portable devices, then location detection capability is improved, but system complexity increases
Solution Approach 1:
The system segments the wireless communication functionality by using different communication devices (first communication device for initial connection, second communication devices for location tracking) with different wireless methods. This segmentation allows each component to specialize in specific tasks, improving location detection while managing overall system complexity through functional division.
Solution Approach 2:
The communication schedule mechanism serves multiple functions: it coordinates communication between different devices, manages resource allocation, enables location tracking, and handles device identification. This multi-functionality reduces the need for separate specialized systems, thereby improving capability without proportionally increasing complexity.
2Measurement precision
If communication schedules are implemented for multiple portable devices, then location tracking accuracy is improved, but communication coordination complexity increases
Solution Approach 1:
The system implements periodic communication sessions defined by communication schedules, where second communication devices transmit messages at regular intervals to portable devices. This periodic action enables accurate location tracking through time-stamped messages while simplifying coordination by using predictable, repeating patterns rather than complex ad-hoc scheduling.
Solution Approach 2:
Each portable device autonomously processes received messages and determines its own location based on the communication schedule and message timing. This self-service approach reduces central coordination complexity while maintaining high tracking accuracy, as each device independently performs location calculations without requiring complex centralized control.
Data Source
AI summary
A vehicle system includes a first communication device, a plurality of second communication devices, and a controller. The first communication device is configured to communicate using a first wireless communication method. The plurality of second communication devices are configured to communicate using a second wireless communication method and are disposed at two or more known locations along a vehicle. The controller is configured to define a communication schedule identifying a designated communication session for a portable device (PD) to communicate via the second wireless communication method, provide, via the first communication device to the PD, data indicative of a designated communication session of the communication schedule for the PD to communicate via the second wireless communication method, and store a location of the PD in response to detecting the location of the PD based on a message provided by the plurality of second communication devices at the designated communication session.