Performance Evaluation of Prophet Routing Protocol on Different Buffer Management Policies

Abstract

Delay Tolerant Networks (DTNs) is the advanced class of Ad-hoc network.
DTN is wireless network in which connections between nodes are
occasionally, due to which there is no permanent path is established
between source and destination node. The connection between nodes are
made instantly, when one node come into the range of another node.
Therefore, in these network, message delivery is totally depends open the
connection of nodes made in network. In DTN, mechanism used for
routing the message is Store-Carry and Forward (SCF) approach. Each
node in network has limited buffer space to store message. The message is
discards or dropped from the buffer space when it is full. To discover
which message is discards form the buffer space a number of buffer
management strategies are developed by the researcher such as the first in
first out (FIFO), Drop oldest, Drop large, Drop last, Drop Random (DR),
Drop Least Recently Received (DLR), Evict most forward first (MOFO)
and E-drop drop strategies etc. In this paper performance of Drop Random,
DLR, MOFO and E-Drop buffer policies are evaluated on Prophet routing
protocol.