Routing in Delay Tolerant Network: A Survey

Abstract

—Routing in delay-tolerant networking concerns itself with the ability to transport, or
route, data from a source to a destination, which is a essential ability all communication networks
must have. Delay tolerant networks (DTNs) are categorized by their absence of connectivity, causing
in a absence of sudden end-to-end paths. In these challenging environments, popular ad hoc routing
protocols such as AODV and DSR fail to establish routes. This is due to these protocols trying to
first create a complete route and then, after the route has been established, forward the real data.
However, when instantaneous end-to-end paths are difficult or difficult to establish, routing protocols
must take to a “store and forward” approach, where data is incrementally moved and stored
throughout the network in hopes that it will ultimately reach its destination. A common procedure
used to make best use of the chance of a message being successfully transferred is to duplicate many
copies of the message in hopes that one will succeed in reaching its destination. In this paper I have
surveyed some of the useful routing protocol in delay tolerant network.