In this work, we investigate the use of epidemic routing in energy constrained Delay Tolerant
Networks (DTNs). In DTNs, connected paths between source and destination rarely
materialize due to the mobility and sparse density of nodes. Epidemic routing is well-suited
for these environments due to its simplicity and fully distributed implementation. In epidemic
routing, messages are relayed by intermediate nodes at contact opportunities, ie, when pairs
of nodes come within transmission range. Each node needs to decide whether to forward its …

In this work, we investigate the use of epidemic routing in energy constrained delay tolerant
networks (DTNs). In epidemic routing, messages are relayed by intermediate nodes at
contact opportunities, ie, when pairs of nodes come within the transmission range of each
other. Each node needs to decide whether to forward its message upon contact with a new
node based on its own residual energy level and the age of that message. We
mathematically characterize the fundamental trade-off between energy conservation and a …