An adaptive failure detection system for Vehicular Ad-hoc Networks

The capacity to detect component failures is an important characteristic for fault-tolerant distributed systems. This article presents a failure detector suitable for Vehicular Ad hoc NETworks (VANETs) environments. The detector is composed of two parts: a detector for the communication link and a detector of process failure. While the link detector verifies the validity of a link between two processes, the process' failure detector adapts itself to the mobility of the vehicles and variations in the communication load in the network. Simulation results show that the detector presents a low number of false suspicions and a short detection time.