V2V Beam Elevation for Interference Reduction

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

In vehicle-to-vehicle (V2V) communication, especially in dense traffic scenarios, interference from signal transmissions between closely located vehicles is a significant challenge due to the proximity of communicating partners, leading to reduced communication performance and increased latency, which is critical in safety-critical applications.

Innovation Solution

The method involves adjusting the direction of the signal beam relative to the ground plane by elevating it at an angle, exploiting the third dimension of space to reduce interference, and using ground reflection to adjust signal energy and interference levels dynamically, allowing for flexible antenna placement and integration with existing CSMA/CA techniques.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If signal transmission is performed in dense traffic scenarios with closely located vehicles, then communication coverage is improved, but interference level increases

Engineering Contradiction:

Improvecommunication coverageVSAvoidinterference level

Core Design Contradiction:

Area of stationary objectVSObject-affected harmful factors

Solution Approach 1:

The patent applies vertical beam steering to elevate the signal beam direction from the horizontal plane to a three-dimensional space with a specific elevation angle. This dimensional change allows the signal to propagate above the ground level, exploiting the vertical dimension to reduce interference in dense traffic scenarios while maintaining communication coverage.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The patent dynamically adjusts the elevation angle parameter of the signal beam based on detected interference levels. When interference is detected, the system changes the beam direction parameter to a higher elevation angle, thereby reducing ground reflection and interference with other vehicles while maintaining effective communication coverage.

Inventive Principle:

Principle #35Parameter changes

2Object-affected harmful factors

If beam direction is elevated to reduce interference, then interference level decreases, but signal energy to ground plane reduces

Engineering Contradiction:

Improveinterference levelVSAvoidsignal energy to ground plane

Core Design Contradiction:

Object-affected harmful factorsVSUse of energy by moving object

Solution Approach 1:

The patent converts the potentially harmful ground reflection that causes interference into a beneficial effect by using controlled ground reflection at elevated angles. The signal is deliberately directed at an elevation angle to reflect off the ground and reach target vehicles, while the elevated angle ensures the reflection does not cause interference with other nearby vehicles.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

3Use of energy by moving object

If traditional horizontal beam transmission is used, then signal energy to ground plane is maximized, but interference from other vehicles increases

Engineering Contradiction:

Improvesignal energy to ground planeVSAvoidinterference from other vehicles

Core Design Contradiction:

Use of energy by moving objectVSObject-affected harmful factors

Solution Approach 1:

The patent transitions from two-dimensional horizontal beam transmission to three-dimensional transmission by introducing vertical elevation. The beam is steered at a specific elevation angle above the horizontal plane, which reduces ground reflection interference with nearby vehicles while maintaining sufficient signal energy delivery to the ground plane through controlled reflection.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

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 effectively minimizes interference in V2V communication, enhancing resource utilization and reducing latency, thereby improving communication reliability in dynamic vehicular environments without requiring complex error correction algorithms or additional interference detection mechanisms.

Implementation Method 1

adjusting a direction of beam for signal transmissions from the first mobile station to the second mobile station, wherein the adjusting of the direction of beam comprises elevating the direction of beam relative to an angle between a ground level and a current direction of beam

Methodology Applied

Scientific EffectBeam elevation:

Implementation Method 2

using ground reflection to adjust signal energy and interference levels dynamically

Methodology Applied

Scientific EffectGround reflection: Reflection

Data Source

PatentUS10925071B2Method for adjusting the interference level for a wireless communication from a first mobile station to a second mobile station and adapted mobile station for use in the method and adapted vehicle

Publication Date: 2021.02.16 VOLKSWAGEN AG

AI summary

A method for adjusting the interference level for a wireless communication from a first mobile station to a second mobile station including detecting an interference level at a transmitting station and providing for elevation of the direction of beam for the signal transmissions from the first mobile station to the second mobile station relative to an angle between the ground plane and the current direction of beam for the transmissions from the first mobile station to the second mobile station. Such lifting up of the beam avoids interference at the place of a third mobile station located at the direction of signal transmission but with further distance, since the signal strength then vanishes relatively quickly if the beam is lifted up.