Radar Chirp V2V Communication for Adverse-Weather Maneuver Planning
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Solution Overview
Problem
Existing vehicle-to-vehicle communication technologies, such as 5G cellular communication and WiFi, have limited range and do not effectively utilize radar for transmitting vehicle status and maneuver information, which is crucial for safe autonomous driving, especially in challenging weather conditions.
Innovation Solution
Implementing vehicle-to-vehicle communication using radar by embedding vehicle status and maneuver information in radar chirps, utilizing existing vehicle hardware, including radar and camera systems, to enhance communication range and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If 5G cellular communication or WiFi is used for V2V communication, then vehicle status and maneuver information can be transmitted, but the communication range is limited
Solution Approach 1:
The radar system is made multi-functional by enabling it to perform both its traditional sensing function and V2V communication function simultaneously. The radar transceiver module transmits both sensing signals and embedded status information using the same hardware infrastructure, eliminating the need for separate communication devices and extending communication range beyond what 5G or WiFi can achieve alone.
Solution Approach 2:
The patent merges V2V communication functionality with the existing radar sensing system. By embedding status information and maneuver data within radar chirps, the system combines communication with sensing operations, allowing vehicles to exchange information over longer distances while maintaining reliability in adverse weather conditions where radar performs well.
2Length of stationary object
If radar is used for V2V communication by embedding information in radar chirps, then communication range is extended, but device complexity increases
Solution Approach 1:
The radar transceiver module is designed to handle both sensing and communication tasks using the same hardware components. The processor generates waveform characteristic data that embeds status information within the radar chirp signals, allowing the existing radar infrastructure to perform dual functions without requiring entirely new communication hardware.
Solution Approach 2:
The system utilizes its own radar signals to carry communication information, making the radar system self-sufficient for both sensing and communication needs. By embedding V2V information within the radar chirps that are already being transmitted for sensing, the system avoids the complexity of integrating separate communication transceivers and protocols.
3Device complexity
If existing radar hardware is utilized for V2V communication, then additional hardware is avoided, but the ability to transmit comprehensive vehicle status information is limited
Solution Approach 1:
The system changes the parameters of the radar waveform to encode additional information. By modifying waveform characteristic data such as frequency, amplitude, or phase of the radar chirps, the system embeds comprehensive vehicle status information including position, velocity, and planned maneuvers within the existing radar signal structure, maximizing information transmission capacity without adding hardware.
Solution Approach 2:
The patent adds an information-carrying dimension to the radar signal by embedding status data within the waveform characteristics. This allows the radar system to transmit not only distance and velocity information through traditional ranging but also additional dimensions of information such as vehicle status and maneuver intentions, effectively using the signal's temporal and spectral properties as additional communication channels.
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
Enhances the planning of lane changes and maneuvers by providing robust vehicle-to-vehicle communication, especially in adverse weather conditions, using radar to transmit unique identifiers, positions, velocities, and planned maneuvers, improving safety and maneuver planning.
Implementation Method 1
Using radar for vehicle-to-vehicle (V2V) communication
Implementation Method 2
communicate waveform characteristic data to a radar transceiver module
Data Source
AI summary
An apparatus comprises an interface and a processor. The interface may be configured to (i) receive sensor readings from a plurality of sensors of a vehicle, (ii) communicate waveform characteristic data to a radar transceiver module, and (iii) receive return data from the radar transceiver module. The processor may be configured to (i) generate first status information about the vehicle based on the sensor readings and (ii) generate the waveform characteristic data based on the first status information about the vehicle.