EPI-T: A novel routing protocol for intermittently connected networks

In intermittently connected networks, epidemic routing protocols have been widely used as its simplicity and reliability. However, this kind of protocols will make the same message cover most of the nodes in networks which causes a huge waste of network resources. Therefore, this paper proposes a new routing protocol named epidemic routing based on separation time with forwarding tokens constrained (EPI-T). EPI-T selects a route according to the idea of epidemic routing and history information, which can restrict flooding range and saves the network resources. Simulation results show that EPI-T improves delivery ratio and shortens the message delivery delay.