The Concept of Delay Tolerant Network Approaches and Issues

Abstract — Delay Tolerant Networks (DTNs) are a class of networks that enable communication where connectivity issues like sparse connectivity, intermittent connectivity; high latency, long delay, high error rates, asymmetric data rate, and even no end-to-end connectivity exist. The DTN architecture was introduced to deal with this connectivity. In these networks vehicles use a message relaying service by their mobility in the network and collect messages from source nodes. In this paper, we will review the architecture of DTN is introduced at first; including the characteristics of Delay Tolerant Mobile Network routing protocol in delay tolerant networks issues. I