Vehicle Beamforming Control for Internal Noise Avoidance
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Solution Overview
Problem
Existing infotainment systems in vehicles face challenges in providing high-quality communication services to backseat passengers due to internal noise, such as multipath fading and electrical noise, which are not adequately addressed by current beamforming techniques.
Innovation Solution
A vehicle communication apparatus employs beamforming techniques to switch between different vehicle modes, calculate received power differences, and adjust beam directions to minimize internal noise, ensuring high-quality communication services by avoiding noisy angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beamforming is used to enhance communication performance, then transmission and reception gain is increased, but internal noise from electrical components and multipath fading still affects communication quality
Solution Approach 1:
The system changes the operational mode parameter of the vehicle (ACC mode vs. IGN on/Start mode) to create different electrical noise environments. By measuring received power at different modes, the system can identify and avoid beam directions where internal noise degrades communication quality, thus resolving the contradiction between maintaining communication performance and avoiding internal noise interference
2Power
If beamforming directs beams to specific angles to strengthen received signal, then communication gain is improved, but noise from specific directions cannot be avoided
Solution Approach 1:
The system implements feedback by measuring received power at different beam directions and vehicle modes, then using this information to determine which angles to avoid for transmission and reception. This feedback loop enables the system to adaptively select beam directions that maximize signal strength while minimizing noise interference from electrical components and multipath fading
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
The apparatus effectively reduces internal noise interference, enhancing communication performance and providing uninterrupted service to backseat passengers by optimizing beamforming based on received power comparisons and mode switching.
Implementation Method 1
Beamforming increases transmission and reception gain, strengthening the received signal for a specific receiver by directing beams using one or more antennas
Implementation Method 2
The internal noise includes multipath fading, which results from the combination of electrical noise generated by electrical and electronic components and electromagnetic waves that are reflected multiple times by surrounding objects
Data Source
AI summary
A vehicle communication method can include: switching the vehicle's mode to ACC mode; performing first beamforming with respect to a beam directed at an angle θ(0°≤θ≤180°); calculating first received power for the first beamformed beam; switching the vehicle's mode to IGN on or Start mode; performing second beamforming with respect to the beam directed at the angle θ; calculating second received power for the second beamformed beam; comparing the absolute value of a difference between the first received power and the second received power with a preset value K; and determining whether or not to transmit and receive the beam directed at the angle θ based on a result of the comparison.