Controlling messages for probabilistic routing protocols in Delay-Tolerant Networks

A Delay Tolerant Networks is a network where contemporaneous connectivity among all nodes does not exist. Conventional routing protocols are not suitable for DTN because they assume end-to-end connectivity. DTNs are characterized by the absence of it. This leads to the critical problem of how to route a packet from one node to another, in such a network. This problem becomes more complex, when the node mobility also is considered. In this paper, a novel strategy is presented and evaluated for controlling messages in DTNs based on the delivery predictability metric of probabilistic routing protocols. Simulation results show that this new strategy gives better results in terms of delivered and relayed messages.