Optimal content caching for epidemic routing in Delay Tolerant Networks

Abstract

Delay Tolerant Networks allow communication services under highly mobile and intermittent connectivity. DTNs can overcome the problem of high mobility and disconnections based on the store-carry and forward principle and releasing many copies of the same message. In this paper we model the message's propagation in epidemic routing and we derive the optimal duration that a node can holds a message for forwarding it to other relays.