Logo
ScienceStack
Table of Contents
Fetching ...
Sign In

Offloading platooning applications from 5.9 GHz V2X to Radar Communications: effects on safety and efficiency

Elena Haller, Galina Sidorenko, Oscar Amador, Emil Nilsson

TL;DR

The paper tackles congestion in the 5.9 GHz V2X band by proposing Radar-Based Communication (RadCom) to offload intra-platoon PCM traffic. Using a simulation framework (Artery/OMNeT++/Veins/SUMO), it evaluates how RadCom penetration affects channel occupancy, PDR, and latency, and translates these gains into reduced inter-vehicle distances and fuel savings. Findings show that higher RadCom offloading improves reliability and lowers delays while keeping channel usage near ITS-G5 limits, enabling shorter platoon spacing and measurable fuel efficiency gains. The work highlights practical considerations such as weather, security, and fleet heterogeneity, outlining a path toward broader RadCom integration in future mobility services.

Abstract

V2X communications are nowadays performed at 5.9\,GHz spectrum, either using WiFi-based or Cellular technology. The channel capacity is limited, and congestion control regulates the number of messages that can enter the medium. With user rate growing, overloading becomes a factor that might affect road safety and traffic efficiency. The present paper evaluates the potential of using Radar-Based Communication (RadCom) for offloading the V2X spectrum. We consider a heavy-duty vehicle (HDV) platooning scenario as a case of maneuver coordination where local messages are transmitted by means of RadCom at different penetration rates. Simulations show significant improvements in channel occupation and network reliability. As a result, RadCom allows for shorter safe and energy efficient inter-vehicle distances.

Offloading platooning applications from 5.9 GHz V2X to Radar Communications: effects on safety and efficiency

TL;DR

The paper tackles congestion in the 5.9 GHz V2X band by proposing Radar-Based Communication (RadCom) to offload intra-platoon PCM traffic. Using a simulation framework (Artery/OMNeT++/Veins/SUMO), it evaluates how RadCom penetration affects channel occupancy, PDR, and latency, and translates these gains into reduced inter-vehicle distances and fuel savings. Findings show that higher RadCom offloading improves reliability and lowers delays while keeping channel usage near ITS-G5 limits, enabling shorter platoon spacing and measurable fuel efficiency gains. The work highlights practical considerations such as weather, security, and fleet heterogeneity, outlining a path toward broader RadCom integration in future mobility services.

Abstract

V2X communications are nowadays performed at 5.9\,GHz spectrum, either using WiFi-based or Cellular technology. The channel capacity is limited, and congestion control regulates the number of messages that can enter the medium. With user rate growing, overloading becomes a factor that might affect road safety and traffic efficiency. The present paper evaluates the potential of using Radar-Based Communication (RadCom) for offloading the V2X spectrum. We consider a heavy-duty vehicle (HDV) platooning scenario as a case of maneuver coordination where local messages are transmitted by means of RadCom at different penetration rates. Simulations show significant improvements in channel occupation and network reliability. As a result, RadCom allows for shorter safe and energy efficient inter-vehicle distances.
Paper Structure (12 sections, 3 figures, 2 tables)

This paper contains 12 sections, 3 figures, 2 tables.

Table of Contents

  1. Introduction
  2. Platooning
  3. Network-enabled platooning
  4. Access phenomena affecting platooning
  5. RadCom-enabled Platooning
  6. RadCom ability to support V2V communications
  7. Evaluation of Channel Occupation
  8. Simulation Scenario
  9. Simulation results
  10. Optimal Distances and Fuel Consumption
  11. Discussion
  12. Conclusion and Future Work

Figures (3)

  • Figure 1: Hidden and exposed node phenomena in V2X scenarios
  • Figure 2: Representation of offloading intra-platoon communications to RadCom. The yellow and blue shades represent the coverage area for the members of each platoon, yellow for the westbound and blue for the eastbound.
  • Figure 3: Safe inter-vehicle distances in a platoon of four vehicles versus RadCom penetration rate. Here, $d_{i-1,i}$ denotes an inter-vehicle distance between vehicles $i-1$ and $i$ where vehicle $0$ is the leader.