V2X Transmit Parameter Selection Using Joint Radar Sensing
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Solution Overview
Problem
The increasing demand for sidelink communications in vehicle-to-everything (V2X) networks leads to a higher likelihood of allocation collisions, which can result in unsuccessful decoding of transmissions, especially in crowded networks and peak traffic scenarios, posing a safety risk.
Innovation Solution
A method and apparatus for wireless communication that involves receiving V2X messages and radar signals to estimate joint communication and radar side information, predicting a communication state, and updating transmit parameters to optimize beam pointing and reduce collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the number of V2X communicating vehicles increases to improve network coverage and connectivity, then the network becomes increasingly crowded and allocation collisions between UEs increase, which prevents successful decoding of transmissions
Solution Approach 1:
The system dynamically adjusts beamforming parameters and transmit configurations based on real-time channel conditions detected through radar signals. This dynamic adaptation allows the system to respond to changing network density and collision conditions, maintaining reliable communication even as network coverage expands and crowding increases.
Solution Approach 2:
The patent changes physical parameters of signal transmission by using radar-detected channel state information to adjust beamforming weights, transmit power, and resource allocation. These parameter changes enable the system to optimize transmission reliability under varying network conditions without requiring additional infrastructure.
2Productivity
If traditional communication methods are used without joint radar-side information, then device complexity remains lower, but communication efficiency and collision avoidance capability are insufficient in crowded V2X networks
Solution Approach 1:
The patent merges radar sensing functionality with communication transmission by using the same hardware infrastructure for both purposes. The radar-detected channel state information is directly utilized to optimize communication beamforming, eliminating the need for separate sensing and communication systems while improving communication efficiency in crowded networks.
Solution Approach 2:
The system implements multi-functionality by enabling the communication system to perform both traditional data transmission and environmental sensing functions. The radar component provides channel information that serves dual purposes: improving communication reliability and enabling collision detection, thereby reducing the need for separate dedicated sensing systems.
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 enhances communication efficiency and reduces transmission outages by adaptively selecting transmit parameters, improving data rates and minimizing collisions in V2X networks.
Implementation Method 1
periodically transmitting and receiving a radar signal to sense an environment of the first UE
Implementation Method 2
configuring a beam pointing towards a target for reflecting to the second UE
Data Source
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AI summary
A method of wireless communication by a first user equipment (UE) includes receiving a vehicle-to-everything (V2X) message from a second UE. The method also includes periodically transmitting and receiving a radar signal to sense an environment of the first UE. The method includes estimating joint communication and radar side information based on the V2X message and the radar signal. The method further includes predicting a communication state between the first UE and the second UE based on the joint communication and radar side information. The method still further includes updating communication transmit parameters based on the communication state.