C2C Transmission Power Compensation for Cable Loss Control
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Solution Overview
Problem
Existing vehicle-to-vehicle communication systems face challenges in precisely controlling transmission power for distributed congestion control, particularly due to cable losses at specific frequencies, and require transceiver support for power detection and regulation, which can be complex and transceiver-dependent.
Innovation Solution
A compensation device with independent transceiver structure, utilizing two detection devices to measure intended and actual output power differences, allowing for cable loss compensation through a variable gain amplifier, enabling precise power adjustment without relying on transceiver support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If transceiver support is used for power detection and regulation, then power control precision is improved, but device complexity and transceiver dependency increase
Solution Approach 1:
The system is divided into independent functional modules: a compensation device with its own detection devices and variable gain amplifier, separate from the transceiver. This segmentation allows the compensation device to autonomously perform power detection and regulation without requiring transceiver support, thereby reducing transceiver dependency while maintaining power control precision through dedicated detection and control circuits.
2Manufacturing precision
If cable loss compensation is implemented, then transmission power precision is improved, but additional detection devices and control circuits are required
Solution Approach 1:
The compensation device employs detection devices that continuously monitor the actual transmission power, compare it with the intended power level, and generate control signals to adjust the variable gain amplifier accordingly. This feedback mechanism enables real-time cable loss compensation, ensuring precise transmission power control while using a manageable number of detection devices and control circuits configured in a closed-loop system.
3Adaptability or versatility
If independent transceiver structure is used, then adaptability is improved, but measurement capability may be reduced
Solution Approach 1:
The compensation device is designed as a self-sufficient unit with integrated detection devices and control circuits that independently perform power detection, cable loss calculation, and transmission power regulation without relying on the transceiver. This self-service capability ensures transceiver independence and adaptability while maintaining full power detection functionality through dedicated detection hardware and algorithms implemented within the compensation device itself.
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 allows for effective power compensation and regulation in vehicle-to-vehicle communication systems, improving distributed congestion control by independently managing transmission power, reducing the need for transceiver-specific support and simplifying the detection process.
Implementation Method 1
an amplifier with an amplification factor that can be set by the control signal
Implementation Method 2
with a first detector, with which the intended output power can be measured, with a second detection device the actual output power can be measured
Data Source
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AI summary
The invention relates to a method and to a compensation device for a signal (Tx) to be sent as vehicle-to-vehicle communication, having at least one channel (W1, Koppl1, Kab, Koppl2, W2, VGA, W3) from a vehicle-to-vehicle communications transceiver (C2C-Transceiver) to at least one antenna (ANT), having a first transmission power detection apparatus (Det1), which (Det1) is connected (W1) to a transmission output (Tx; Tx2) of the vehicle-to-vehicle communications transceiver (C2C-Transc), in order to detect a first power (PDet1), having a second transmission power detection apparatus (Det2), which (Det2) is connected to an antenna (ANT) in order to detect a second power (PDet2), having a control apparatus (Steu) in order to form a difference (ΔΡ) between the value of the detected first power (PDet1) and the value of the detected second power (PDet2) and in order to form a control signal (St1), having an amplifier (VGA1) having an amplification factor, which is adjustable by the control signal (St1), which (VGA1) is arranged between the vehicle-to-vehicle communications transceiver (C2C-Transc) and an antenna (ANT).