Abstract

Disruption Tolerant Network (DTN) is a networking architecture that is designed to provide communications in
the most unstable and stressed environments. DTN route network messages through intermittently connected
mobile devices. It uses carry-and-forward method for data transmission. The greatest challenge in DTN
network is to reduce the data access delay between the sender and receiver. The solution is to intentionally
cache data into a set of Network Caching Nodes (NCNs), which have high accessibility and buffer capacity. Its
specify an efficient scheme for selecting NCNs and its associative caching nodes. Latest data items are cached
on the NCNs and cache replacement is based on the popularity of data. Through the simulation verify the
performance of the system