Delay/Disruption-Tolerant Networking: Flight test results from the international space station

Jenkins, Andrew; Kuzminsky, Sebastian; Gifford, Kevin; Pitts, Robert L.; Nichols, Kelvin

doi:10.1109/aero.2010.5446948

Cited by 46 publications

(24 citation statements)

References 4 publications

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“…Once it was recognized that the space challenges were actually common to other "challenged networks", the research was enlarged to include all of these [2]. Although no more exclusive, space communications (including satellite [3], [4]) are still one of the most interesting applications of the DTN concept [5], [6], [7].…”

Section: Introductionmentioning

confidence: 99%

Moon to earth DTN communications through lunar relay satellites

Caini

Fiore

2012

2012 6th Advanced Satellite Multimedia Systems Conference (ASMS) and 12th Signal Processing for Space Communications Workshop (

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Although Delay-/DisruptionTolerant Networking, which originated from research on an Interplanetary Internet, has enlarged its scope to encompass all challenged networks, space applications are still one of its most important application fields. This paper deals with DTN communication from Moon to Earth, based on the use of a lunar satellite acting as a "data-mule" to collect data from a Lander located on the far side of the Moon. To make the scenario more interesting and complex from the point of view of possible security threats, we assume that data must be transferred to a non-institutional user connected to the Space Agency Control Centre via Internet. In particular, the paper investigates the state-of-the-art ability of ION, the NASA implementation of the DTN Bundle Protocol (BP), to cope with the many challenges of the space scenario under investigation, such as intermittent links, low bandwidth, relatively high delays, network partitioning, DTN routing, interoperability between LTP and TCP BP Convergence layers and security threats. To this end, the first part of the paper contains three brief overviews of the DTN architecture, the Bundle Security Protocol and the ION implementation. These facilitate comprehension of the following sections, dedicated to a detailed description of the experiment scenario and, most essentially, to the in depth discussion of the numerical results obtained with the latest ION version (3.0).

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Section: Introductionmentioning

confidence: 99%

Moon to earth DTN communications through lunar relay satellites

Caini

Fiore

2012

2012 6th Advanced Satellite Multimedia Systems Conference (ASMS) and 12th Signal Processing for Space Communications Workshop (

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“…Several space DTN testbeds and platforms have been implemented and tested recently, such as NASA JPL's Deep Impact Networking Experiment [57] or ESA's DTN testbed deployment project [58]. In space DTNs, the network has intermittent connectivity among multiple satellites, landed rovers, or spacecrafts but all of their trajectories and orbits are predetermined, thus communication opportunities are predictable and time-evolving topology is known a priori.…”

Section: Simulations On a Space Dtn For Mars Explorationmentioning

confidence: 99%

Reliable Topology Design in Time-Evolving Delay-Tolerant Networks with Unreliable Links

Chen

Huang

et al. 2015

IEEE Trans. on Mobile Comput.

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Delay tolerant networks (DTNs) recently have drawn much attention from researchers due to their wide applications in various challenging environments. Previous DTN research mainly concentrates on information propagation and packet delivery. However, with possible participation of a large number of mobile devices, how to maintain efficient and dynamic topology becomes crucial. In this paper, we study the topology design problem in a predictable DTN where the time-evolving topology is known a priori or can be predicted. We model such a time-evolving network as a weighted directed space-time graph which includes both spacial and temporal information. Links inside the space-time graph are unreliable due to either the dynamic nature of wireless communications or the rough prediction of underlying human/device mobility. The purpose of our reliable topology design problem is to build a sparse structure from the original space-time graph such that (1) for any pair of devices, there is a space-time path connecting them with a reliability higher than the required threshold; (2) the total cost of the structure is minimized. Such an optimization problem is NP-hard, thus we propose several heuristics which can significantly reduce the total cost of the topology while maintain the "reliable" connectivity over time. In this paper, we consider both unicast and broadcast reliability of a topology. Finally, extensive simulations are conducted on random DTNs, a synthetic space DTN, and a real-world DTN tracing data. Results demonstrate the efficiency of the proposed methods.

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“…Another crucial aspect of SCF-based networks is the long end-to-end delay, which may either result from long distances between a source and destination pair (e.g., inter planetary networks -IPNs) or long encounter intervals (e.g., PSNs). SCF can be used for deep space communications [1], wildlife monitoring [6], social applications [2], cellular traffic offloading [65], vehicular networks [68], and applications in challenged environments [81]. In their study, Mota et al [37] present applications of SCF-based networks in detail.…”

Section: Background On Psnmentioning

confidence: 99%