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Open AccessFeature PaperArticle

Mars to Earth Data Downloading: A Directory Synchronization Approach

DEI/ARCES, University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy
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Future Internet 2019, 11(8), 173; https://doi.org/10.3390/fi11080173
Received: 26 June 2019 / Revised: 29 July 2019 / Accepted: 2 August 2019 / Published: 8 August 2019
(This article belongs to the Special Issue Delay-Tolerant Networking)
This paper aims to present a possible alternative to direct file transfer in “challenged networks”, by using DTNbox, a recent application for peer-to-peer directory synchronization between DTN nodes. This application uses the Bundle Protocol (BP) to tackle long delays and link intermittency typical of challenged networks. The directory synchronization approach proposed in the paper consists of delegating the transmission of bulk data files to DTNbox, instead of modifying source applications to interface with the API of a specific BP implementation, or making use of custom scripts for file transfers. The validity of the proposed approach is investigated in the paper by considering a Mars to Earth interplanetary environment. Experiments are carried out by means of Virtual Machines running ION, the NASA-JPL implementation of DTN protocols. The results show that the directory synchronization approach is a valid alternative to direct transfer in interplanetary scenarios such as that considered in the paper. View Full-Text
Keywords: delay-/disruption-tolerant networking; inter-planetary internet; bundle protocol; directory synchronization delay-/disruption-tolerant networking; inter-planetary internet; bundle protocol; directory synchronization
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Bertolazzi, M.; Caini, C. Mars to Earth Data Downloading: A Directory Synchronization Approach. Future Internet 2019, 11, 173.

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