Challenges of applying DTN routing protocols in realistic disaster scenarios

Delay Tolerant Networks (DTNs) are used to deliver messages in cases of intermittent connectivity. Disaster scenarios with multiple Mobile Ad hoc Networks formed by the communication equipment of first responders are one example for such networks. In this paper, we evaluate different delay tolerant routing schemes based on realistic mobility models and traffic patterns. Both options are crucial as the routing schemes usually exploit the movement of the nodes in order to deliver the messages. Our results show that the choice of a routing protocol has an impact on the experienced delay, but a DTN-based communication system should also provide the necessary contact opportunities. Therefore, we present a solution to integrate additional nodes and efficient routing to address this.