Vehicle Network Address Assignment for Shared-Address Node Identification
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Solution Overview
Problem
In vehicle networks, existing systems struggle to identify and communicate with individual second computers due to their shared network addresses, leading to ambiguity in actuating specific vehicle components based on relay messages.
Innovation Solution
Assigning unique network addresses to second computers using random numbers generated by each computer, followed by location determination through angle-of-arrival, signal strength, or time-of-flight measurements, allowing the first computer to accurately identify and actuate the correct vehicle components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If multiple second computers are assigned a common network address to simplify network configuration, then device complexity is reduced, but individual identification and communication reliability deteriorate
Solution Approach 1:
The system performs preliminary actions by assigning temporary common network addresses to multiple second computers before actual communication needs arise. When a portable device needs to communicate with a specific second computer, the system then performs location determination and assigns a unique network address at that moment, ensuring both simplified initial configuration and reliable individual communication.
2Reliability
If unique network addresses are assigned to each second computer from the beginning, then communication reliability is improved, but device complexity and configuration difficulty increase
Solution Approach 1:
The system implements dynamic network address assignment where second computers can have common network addresses during idle periods and unique network addresses when communication is needed. The network address configuration changes dynamically based on operational requirements, combining the benefits of both simplified configuration and reliable communication.
3Measurement precision
If location determination methods such as angle-of-arrival or time-of-flight measurements are implemented, then individual computer identification accuracy is improved, but system complexity and measurement requirements increase
Solution Approach 1:
The system introduces a first computer as an intermediary that performs location determination between the portable device and second computers. Instead of requiring direct complex measurements between all devices, the first computer mediates the process by receiving signals from second computers, determining their locations using methods like angle-of-arrival or time-of-flight, and then assigning appropriate network addresses based on the determined locations.
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
Enables precise communication and control of vehicle components by determining their locations, ensuring accurate performance of vehicle functions initiated by portable devices.
Implementation Method 1
location determination through angle-of-arrival, signal strength, or time-of-flight measurements
Implementation Method 2
location determination through angle-of-arrival, signal strength, or time-of-flight measurements
Implementation Method 3
location determination through angle-of-arrival, signal strength, or time-of-flight measurements
Data Source
AI summary
A first computer is connected to a communication network and is assigned a first network address on the communication network. A second computer is connected to the communication network and is assigned the first network address on the communication network. A first message, including the first network address and a request to generate a random number, is transmitted by the first computer via the communication network. A first reply message, including the random number, is received from the second computer in response to the request. A second network address is assigned for the second computer by the first computer based on the random number. A second message, including the second network address and the random number, is transmitted by the first computer via the communication network.