Application of Radio Environment Map Reconstruction Techniques to Platoon-based Cellular V2X Communications

Area of Science:

• Wireless Communications
• Intelligent Transportation Systems
• Signal Processing

Background:

• Vehicle platooning enhances road efficiency and fuel economy.
• Reliable wireless communication is crucial for platoon safety and coordination.
• Cellular vehicle-to-anything (V2X) systems face latency challenges due to control information exchange.

Purpose of the Study:

• To decrease control information exchange for channel acquisition in infrastructure-assisted V2X platooning.
• To exploit platooning structure for efficient radio environment map (REM) reconstruction.
• To reduce communication latency in vehicle platooning.

Main Methods:

• Proposed a REM reconstruction scheme using spatial Ordinary Kriging (OK) interpolation.
• Utilized geo-localized received power values from a subset of platoon vehicles.
• Explored optimal vehicle patterns and semivariogram modeling for OK accuracy.

Main Results:

• Ordinary Kriging effectively reconstructed the REM within the platoon.
• Achieved an acceptable mean squared estimation error for REM reconstruction.
• Reduced control information for REM acquisition by up to 64% in optimal scenarios.

Conclusions:

• The proposed OK-based REM reconstruction is effective for vehicle platooning.
• Significant reduction in control information exchange improves V2X communication efficiency.
• This approach enhances the feasibility of safe and coordinated vehicle platooning.