Wireless Localization for BLE Satellite Address Assignment
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Solution Overview
Problem
Existing vehicle access networks using Bluetooth Low Energy (BLE) satellites face challenges in efficiently assigning unique network addresses to identical hardware satellites, leading to increased complexity and cost due to the need for additional wired connections, such as a CAN bus, to facilitate location-based communication.
Innovation Solution
A wireless localization technique using received signal strength indicator (RSSI) values and system topology to determine the location of BLE satellites and assign unique network addresses, eliminating the need for additional wired connections by leveraging Bluetooth communication protocols for address assignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional wired connections (CAN bus) are used to assign unique network addresses to BLE satellites, then location-based communication reliability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent replaces the mechanical wired connection system (CAN bus) with a wireless electromagnetic field-based system. The central device uses wireless localization techniques, specifically analyzing RSSI (Received Signal Strength Indicator) values from advertising packets transmitted by BLE satellites, to determine satellite locations and assign network addresses wirelessly, eliminating the need for physical wired connections for address assignment.
Solution Approach 2:
The patent introduces advertising packets as an intermediary carrier that conveys localization information. These packets contain RSSI values that serve as the basis for wireless location determination, acting as a mediator between the BLE satellites and the central device to enable address assignment without direct wired connections.
2Measurement precision
If additional wired connections (CAN bus) are used to facilitate location-based communication, then communication accuracy is improved, but manufacturing cost increases
Solution Approach 1:
The patent substitutes expensive wired infrastructure (CAN bus connections) with a cost-effective wireless electromagnetic field-based localization system. By utilizing existing BLE advertising packet transmission and RSSI measurement capabilities, the system achieves location determination without requiring additional wired infrastructure, thereby reducing manufacturing costs while maintaining location accuracy.
Solution Approach 2:
The BLE satellites autonomously transmit advertising packets containing their identification and signal strength information. The central device independently processes these packets to determine satellite locations and assign addresses, eliminating the need for manual configuration or additional wired infrastructure, thereby reducing manufacturing complexity and cost.
3Device complexity
If wireless localization using RSSI values is used to assign network addresses, then device complexity is reduced, but measurement precision may be affected
Solution Approach 1:
The patent implements a feedback mechanism where the central device receives advertising packets from BLE satellites, analyzes the RSSI values in real-time, determines satellite locations based on signal strength, and assigns network addresses accordingly. This continuous feedback loop allows the system to adapt to changing wireless conditions and maintain accurate location determination without complex wired infrastructure.
Solution Approach 2:
The patent utilizes RSSI (Received Signal Strength Indicator) values as a dynamic parameter for location determination. By monitoring changes in signal strength and using these parameter variations to infer satellite positions, the system achieves accurate location-based address assignment through wireless means, simplifying the overall device complexity while maintaining measurement precision.
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 simplifies the manufacturing and management of BLE satellites by enabling unique address assignment without additional wired infrastructure, reducing costs and complexity while maintaining accurate location-based communication within the vehicle access network.
Implementation Method 1
determining a first location of the first satellite device responsive to a first wireless localization value of the first advertising packet
Data Source
AI summary
A method includes receiving, by a central device over a wireless communication link, a first advertising packet from a first satellite device; receiving, by the central device over the wireless communication link, a second advertising packet from a second satellite device; determining a first location of the first satellite device responsive to a first wireless localization value of the first advertising packet; and assigning, by the central device, a first network address to the first satellite device responsive to the determined first location.