REACT: Routing Protocol for Emergency Applications in Car-to-Car Networks using Trajectories

Traffic safety is a very important issue in modern society and the last couple of years researchers have started looking at telecommunication solutions to enhance traffic safety. More specifically researchers are looking at emergency alert services, enabling cars to warn eachother for incidents (slippery road, accident, . . . ). Existing forwarding protocols for vehicular networks often use an approach based on geographical information as a topology based forwarding protocol fails to adapt to the quick movement of the vehicles. A geographical based approach however uses only a part of the information available to the system. In this paper a new routing algorithm, REACT, will be proposed, using not only geographical information, for both position and speed, but also road map information. Using the knowledge of both neighbors and road maps, a node that wants to send a packet can choose the best forwarder along a given trajectory.