Efficient Routing In Delay Tolerant Network Based On Secure Fuzzy Spray Decision Algorithm
Kumar Kombaiya.A, S.Gnanasoundari
Keywords: Wireless sensor network, Ant colony optimization, Pheromone updating.
ABSTRACT: Delay Tolerant Networks (DTN) where the nodes in this network come into contact with each other opportunistically and communicate wirelessly and, an end-to-end path between source and destination may have never existed, and disconnection and reconnection is common in the network. In such a network, because of the nature of opportunistic network, perhaps there is no a complete path from source to destination for most of the time and even if there is a path; the path can be very unstable and may change or break quickly. Therefore, routing is one of the main challenges in this environment and, in order to make communication possible in an opportunistic network, the intermediate nodes have to play important role in the opportunistic routing protocols. In this paper we proposed an Secure Fuzzy Spray Routing Protocol in delay tolerant network (SFSR-DTN). This protocol is using the simple parameters as input parameters to find the best path to the destination node. It dynamically adjusts the delivery probability for messages according to a new metric. Meanwhile, SFRDTN arranges the forwarding sequence and the dropping priority based on their assigned weight. The weight is determined by the Replication Density (RD), the Message Length (ML), and Message Remaining Life Time (MRLT). An extensive simulation of SFRDTN was carried out and its performance was compared to well known DTN routing protocols: PRoPHET, and epidemic routing protocols. Simulation results show that the proposed routing protocol outperforms them in terms of packet delivery ratio, delivery delay and message overhead.
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