A Survey on Improved PROPHET Routing Protocol in DTN

Delay-tolerant Networking (DTN) makes successful communication in sparse mobile ad-hoc networks and other challenged environments where there is no end to end path established unlike traditional networking. To examine the Delay Tolerant Network, path should be defined over multiple unreliable, intermittently-connected components. The performance and efficiency of routing protocols in DTN depends on various mobility models in which node travels and node characteristics. PRoPHET routing protocol in DTN uses its delivery predictability of node encounters and transitivity to select and forward bundles to its neighbor node regardless of their distance. Routing in such network is very difficult and for that different routing protocols are developed. In this Survey paper we discuss about various routing Strategy and at the end compared the different routing protocol with their various performance metrics.