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Characterizing Pairwise Inter-contact Patterns in Delay Tolerant Networks

Vania Conan Jérémie Leguay Timur Friedman 1
1 NPA - Networks and Performance Analysis
LIP6 - Laboratoire d'Informatique de Paris 6
Abstract : A good understanding of contact patterns in delay tolerant networks (DTNs) is elemental to the design of effective routing or content distribution schemes. Prior work has typically focused on inter-contact time patterns in the aggregate. In this paper, we argue that pairwise inter-contact patterns are a more refined and efficient tool for characterizing DTNs. First, we provide a detailed statistical analysis of pairwise contact and inter-contact times in three reference DTN data sets. We characterize heterogeneities in contact times and inter-contact times, and find that the empirical distributions of inter-contact times tend to be well fitted by log-normal curves, with exponential curves also fitting a significant portion of the distributions. Second, we investigate analytically the relationship between pairwise and aggregate inter-contact times. In particular, we consider both the exponential and log-normal cases and show analytically how the aggregation of pairwise inter-contacts may lead to aggregate inter-contacts with power laws of various degrees.
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Submitted on : Wednesday, May 4, 2016 - 4:20:34 PM
Last modification on : Thursday, March 21, 2019 - 2:22:16 PM


  • HAL Id : hal-01311788, version 1


Vania Conan, Jérémie Leguay, Timur Friedman. Characterizing Pairwise Inter-contact Patterns in Delay Tolerant Networks. ACM Autonomics, Oct 2007, Rome, Italy. pp.19. ⟨hal-01311788⟩



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