A vehicle-to-vehicle communication protocol for cooperative collision warning

TLDR

Emerging V2V and V2R wireless technologies such as DSRC promise to dramatically reduce fatal roadway accidents by providing early warnings. The paper proposes a V2V protocol for cooperative collision warning that seeks to deliver emergency alerts with low latency across diverse road situations. The protocol is designed with congestion‑control policies, service‑differentiation mechanisms, and emergency‑warning dissemination methods to meet application requirements. Simulations show the protocol achieves low‑latency emergency warning delivery and efficient bandwidth usage in stressful road scenarios.

Abstract

This paper proposes a vehicle-to-vehicle communication protocol for cooperative collision warning. Emerging wireless technologies for vehicle-to-vehicle (V2V) and vehicle-to-roadside (V2R) communications such as DSRC are promising to dramatically reduce the number of fatal roadway accidents by providing early warnings. One major technical challenge addressed in this paper is to achieve low-latency in delivering emergency warnings in various road situations. Based on a careful analysis of application requirements, we design an effective protocol, comprising congestion control policies, service differentiation mechanisms and methods for emergency warning dissemination. Simulation results demonstrate that the proposed protocol achieves low latency in delivering emergency warnings and efficient bandwidth usage in stressful road scenarios.