Passive Reflector for Vehicle-to-Vehicle Communication
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Solution Overview
Problem
Current vehicle-to-vehicle communication systems face limitations under less-than-ideal propagation conditions, particularly when vehicles are not in direct visual contact, leading to unreliable communication, especially at high speeds, and existing roadside units are costly to maintain and operate.
Innovation Solution
A passive reflector apparatus is secured at a fixed location on the outer region of curves or curve-like roads to deflect electromagnetic radiation between 2.5 GHz and 7.5 GHz, allowing communication between vehicles without direct visual contact, and can be arranged singly or in combination for flexible placement and adaptation to different road profiles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If roadside units are deployed to enable vehicle-to-vehicle communication under less-than-ideal propagation conditions, then communication reliability is improved, but operational and maintenance costs increase
Solution Approach 1:
The patent introduces a passive reflector apparatus as an intermediary element that redirects electromagnetic radiation between vehicles on curves. This passive reflector serves as a mediator that improves communication reliability without requiring active electronic components, power supply, or complex maintenance, thereby resolving the contradiction between reliability improvement and cost reduction
Solution Approach 2:
The reflector apparatus is designed as a simple, passive, and inexpensive structure that can be easily deployed and replaced if needed. By using basic reflective materials and a simple mounting structure rather than complex active electronics, the solution achieves cost-effectiveness while maintaining communication reliability
2Reliability
If transmission power is increased to maintain communication at high speeds, then communication reliability is improved, but energy consumption increases
Solution Approach 1:
The passive reflector acts as a mediator that extends the effective transmission range by redirecting signals around curves. This allows vehicles to maintain communication at lower transmission powers by utilizing the reflector to overcome propagation limitations, thereby reducing energy consumption while maintaining reliability
3Reliability
If active communication endpoints are deployed to prevent communication limitations, then communication reliability is improved, but production and operation costs increase
Solution Approach 1:
The patent replaces expensive active communication endpoints with a passive reflector apparatus as an intermediary. This passive structure simply redirects electromagnetic waves without requiring electronics, power supply, or complex control systems, thereby dramatically reducing production and operation costs while maintaining communication reliability
Solution Approach 2:
The reflector is constructed from inexpensive materials with a simple geometric structure, making it cheap to manufacture and deploy. The passive design eliminates the need for expensive electronic components and ongoing operational expenses associated with active communication endpoints
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 solution provides reliable and cost-effective vehicle-to-vehicle communication by selectively deflecting electromagnetic radiation, ensuring low latency and maintaining communication even under adverse conditions, while reducing operational and maintenance costs compared to traditional roadside units.
Implementation Method 1
the reflector apparatus deflects electromagnetic radiation in the frequency band between 2.5 GHz and 7.5 GHz that is emitted by a first motor vehicle
Data Source
AI summary
An arrangement for communication between motor vehicles is specified. The arrangement comprises a reflector apparatus that is secured at a fixed location in the outer region of a curve or of a curve-like road. The reflector apparatus is in an orientation such that said reflector apparatus deflects electromagnetic radiation in the frequency band between 2.5 GHz and 7.5 GHz that is emitted by a first motor vehicle, situated in the region of a curve entrance, toward a second motor vehicle, situated in the region of a curve exit. Furthermore, a corresponding reflector apparatus for the arrangement is specified.