Date Added: Jul 2012
This paper proposes a stochastic model to obtain the end-to-end delay law between two nodes of a Delay Tolerant Network (DTN). The authors focus on the commonly used Binary Spray and Wait (BSW) routing protocol and propose a model that can be applied to homogeneous or heterogeneous networks (i.e. when the inter-contact law parameter takes one or several values). To the best of their knowledge, this is the first model allowing to estimate the delay distribution of Binary Spray and Wait DTN protocol in heterogeneous networks. They first detail the model and propose a set of simulations to validate the theoretical results.