Routing in telecommunication networks rely on the definition of performance indicators called routing metrics. Popular routing metrics are the route throughput, end-to-end delay and jitter. However, in a delay tolerant network displaying link disruptions, these metrics may be questionable. This contribution proposes six metrics for characterising routes in a delay tolerant network. These metric...

—There are problems of low delivery radio and high transmission delay in Vehicular Delay-Tolerant Networks (a.b. VDTN. To address these problems, this paper proposes a Vehicular Delay-tolerant Network routing algorithm based on Contention (a.b. VDNC). VDTN algorithm consists of three strategies: the intersection selection strategy based on the Manhattan distance and traffic information, the fi...

In this paper, I introduce main concepts of delay-tolerant networks and their architecture. Delay-tolerant networks are designed to operate in environments characterized by very long delay paths and frequent network partitions. In the end, I give results of performance evaluation of the DTN store-and-forward approach compared to traditional Internet data transfer protocols. The paper does not i...

Traditional networks suppose the existence of some path between endpoints, small end to end round-trip delay time, and loss ratio. Today, however, new applications, environments and types of devices are challenging these assumptions. In Delay Tolerant Networks (DTNs), an end-to-end path from source to destination may not exist. Nodes may connect and exchange information in an opportunistic way....

Delay-tolerant networks have the great potential to connecting devices and regions of the world that are being presently under-served by current networks. A challenge for Delay Tolerant Networks is to determine the routes through the network without having an end to end connection at any given instant of time. In DTN the routing of packets is done using store-carry-forward mechanism. In this pa...