Vehicle Antenna Unit with Embedded Computing for C2X Autonomy
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Solution Overview
Problem
Current vehicle antenna units are not self-sufficient for participating in vehicle-to-vehicle (C2X) communication, relying on other vehicle units for data and communication control, which limits network node density and independence in ad hoc networks.
Innovation Solution
A vehicle antenna unit equipped with a computing unit that autonomously processes satellite positioning signals and executes all C2X communication protocol stack functions, allowing independent participation in C2X communication without relying on other vehicle units, by implementing the ITS access, network, and transport layers, and providing vehicle position, speed, and direction data for efficient data packet switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the antenna unit relies on other vehicle units for data and communication control, then the device complexity is reduced, but the autonomy and network node density in C2X communication is worsened
Solution Approach 1:
The patent combines multiple functions (antenna reception, satellite positioning signal evaluation, C2X communication protocol processing, and vehicle data generation) into a single integrated antenna unit with an embedded computing unit. This merging enables the antenna unit to autonomously participate in C2X communication while maintaining manageable device complexity through functional integration.
Solution Approach 2:
The antenna unit is designed with multi-functionality, serving both as a satellite positioning signal receiver and as a C2X communication device. The computing unit can evaluate satellite signals and simultaneously execute C2X communication protocol stack functions, allowing a single device to perform multiple roles that previously required separate vehicle units.
2Extent of automation
If the antenna unit processes all C2X communication protocol stack functions independently, then the network node density and autonomy are improved, but the device complexity increases
Solution Approach 1:
The computing unit within the antenna unit integrates multiple processing functions including satellite signal evaluation and complete C2X communication protocol stack execution. This consolidation enables autonomous operation while managing complexity through unified architecture rather than multiple separate components.
Solution Approach 2:
The antenna unit is designed to be self-sufficient, generating its own vehicle position, speed, and direction data through integrated satellite signal processing. It independently executes all C2X communication protocol functions without requiring external vehicle units, thereby achieving autonomy while the integrated design keeps complexity manageable.
3Device complexity
If multiple separate vehicle units are used for C2X communication functions, then the device complexity is reduced, but the costs and network node density are worsened
Solution Approach 1:
The patent merges the functions of multiple separate vehicle units (antenna, satellite receiver, C2X communication processor) into a single integrated antenna unit. This reduces the number of vehicle units required while managing complexity through functional integration, thereby improving network node density without proportionally increasing device complexity.
Solution Approach 2:
The antenna unit is designed as a universal device that can perform satellite positioning, C2X communication protocol processing, and vehicle data generation. This multi-functionality eliminates the need for multiple specialized vehicle units, reducing the quantity of components while the integrated architecture manages overall system complexity.
4Extent of automation
If the antenna unit is completely independent of other vehicle units, then the autonomy and network node density are improved, but the ease of operation and data sharing are worsened
Solution Approach 1:
The system architecture is segmented into two independent but compatible parts: the self-sufficient antenna unit that handles C2X communication autonomously, and optional interfaces that enable data exchange with other vehicle units. This segmentation allows the antenna unit to maintain autonomy while providing standardized interfaces for optional integration, balancing independence with ease of operation.
Solution Approach 2:
The patent introduces standardized interfaces as intermediaries between the independent antenna unit and other vehicle units. These interfaces facilitate optional data exchange without compromising the antenna unit's autonomous C2X communication capability, thereby maintaining self-sufficiency while enabling ease of operation when integration is desired.
Data Source
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AI summary
A vehicle antenna unit for participation in vehicle-to-surroundings communication in accordance with the DSRC or ITS-G5 standard having an adhoc network antenna for sending and receiving in the region of 5.9 GHz, having a satellite antenna for receiving satellite locating signals and having driver elements, which are set up to send, bit by bit, and/or to receive data with the adhoc network antenna and the satellite antenna, and having a computation unit for conditioning the data. In order to allow the vehicle to participate in the vehicle-to-surroundings communication, the computation unit is set up to evaluate the satellite locating signals and for the purpose of independent participation by the vehicle antenna unit in the vehicle-to-surroundings communication.