Delay Tolerant Network with Directional Antenna Control for Disaster Information System

If a large scale disaster such as the East Japan Great Earthquake in 2011 occurs, quick network reactivations become one of the important objects for Disaster Information System. DTN (Delay Tolerant Network) is supposed to be one of the effective methods for such inoperable circumstances. However, when DTN is applied for vehicle-to-vehicle communication in local areas, there are some problems such as message delivery rate and latency because there are fewer roads, cars, and pedestrians than in urban areas. In this paper, we introduced DTN with directional antenna control for IEEE802.11a/b/g/n based wireless cars, and the simulation is held by the map of a Japanese coastal town that was severely damaged by the East Japan Great Earthquake. Then, the results are discussed for the future studies of DTN for vehicle-to-vehicle communication based Disaster Information Network System in local areas.