Volume

Dagstuhl Seminar Proceedings, Volume 9071

Publication Details

  • published at: 2009-12-16
  • Publisher: Schloss Dagstuhl – Leibniz-Zentrum für Informatik

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Document
DOI: 10.4230/DagSemProc.09071.1
09071 Abstracts Collection – Delay and Disruption-Tolerant Networking (DTN) II

Authors: Kevin Fall, Cecilia Mascolo, Jörg Ott, and Lars Wolf

Abstract
From 08.02. to 11.02.2009, the Dagstuhl Seminar 09071 ``Delay and Disruption-Tolerant Networking (DTN) II '' was held in Schloss Dagstuhl~--~Leibniz Center for Informatics. During the seminar, several participants presented their current research, and ongoing work and open problems were discussed. Abstracts of the presentations given during the seminar as well as abstracts of seminar results and ideas are put together in this paper. The first section describes the seminar topics and goals in general. Links to extended abstracts or full papers are provided, if available.
Cite as

Kevin Fall, Cecilia Mascolo, Jörg Ott, and Lars Wolf. 09071 Abstracts Collection – Delay and Disruption-Tolerant Networking (DTN) II. In Delay and Disruption-Tolerant Networking (DTN) II. Dagstuhl Seminar Proceedings, Volume 9071, pp. 1-8, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)

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@InProceedings{fall_et_al:DagSemProc.09071.1,
  author =	{Fall, Kevin and Mascolo, Cecilia and Ott, J\"{o}rg and Wolf, Lars},
  title =	{{09071 Abstracts Collection – Delay and Disruption-Tolerant Networking (DTN) II}},
  booktitle =	{Delay and Disruption-Tolerant Networking (DTN) II},
  pages =	{1--8},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2009},
  volume =	{9071},
  editor =	{Kevin Fall and Cecilia Mascolo and J\"{o}rg Ott and Lars Wolf},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.09071.1},
  URN =		{urn:nbn:de:0030-drops-23603},
  doi =		{10.4230/DagSemProc.09071.1},
  annote =	{Keywords: DTN, simulations, mobility, MANET, delay-tolerant networking, ad-hoc networking, routing}
}
Document
DOI: 10.4230/DagSemProc.09071.2
09071 Executive Summary – Delay and Disruption-Tolerant Networking (DTN) II

Authors: Kevin Fall, Cecilia Mascolo, Jörg Ott, and Lars Wolf

Abstract
Today's Internet architecture and protocols, while perfectly suitable for well- connected users, may easily experience serious performance degradation and entirely stop working in more challenged networking environments. These correspondong scenarios all share two commonalities: that an end-to-end path between two communicating nodes may not exist at any single point in time and that communication delay may be significant. With the continued expansion of the Internet into new areas, these environments become commonplace and are no longer restricted to exotic sensing applications but are quickly becoming relevant to consumers in everyday life. Many attempts over recent years of incrementally fixing the Internet protocols in a bottom up fashion have only achieved partial successes, and a more fundamental approach is needed to address networking environments in which delays and disconnections may last for significant periods of time, and are the rule rather than the exception. Delay-tolerant Networking (DTN) has taken a more encompassing approach to dealing with virtually all types of connectivity challenges, from bit rate to errors to delays to disruptions. By providing a novel communication abstraction that relies exclusively on asynchronous hop-by-hop message passing with no need for instant end-to-end connectivity, DTN concepts enable communications even under adverse conditions. This comes, however, at the cost of interactivity of communications, rendering any kind state synchronization or validation more difficult and raising new challenges. These include routing protocols – that need to operate under often unknown future conditions, security mechanisms – that can no longer carry out instant key derivation or validation even if a security infrastructure was in place, and applica- tion protocols and paradigms – that can no longer rely on simple lower layer abstrac- tions promising (mostly) instant and reliable interactions.
Cite as

Kevin Fall, Cecilia Mascolo, Jörg Ott, and Lars Wolf. 09071 Executive Summary – Delay and Disruption-Tolerant Networking (DTN) II. In Delay and Disruption-Tolerant Networking (DTN) II. Dagstuhl Seminar Proceedings, Volume 9071, pp. 1-5, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)

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@InProceedings{fall_et_al:DagSemProc.09071.2,
  author =	{Fall, Kevin and Mascolo, Cecilia and Ott, J\"{o}rg and Wolf, Lars},
  title =	{{09071 Executive Summary – Delay and Disruption-Tolerant Networking (DTN) II}},
  booktitle =	{Delay and Disruption-Tolerant Networking (DTN) II},
  pages =	{1--5},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2009},
  volume =	{9071},
  editor =	{Kevin Fall and Cecilia Mascolo and J\"{o}rg Ott and Lars Wolf},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.09071.2},
  URN =		{urn:nbn:de:0030-drops-23574},
  doi =		{10.4230/DagSemProc.09071.2},
  annote =	{Keywords: DTN, simulations, mobility, MANET, delay-tolerant networking, ad-hoc networking, routing}
}
Document
DOI: 10.4230/DagSemProc.09071.3
On the Performance of Pedestrian Content Distribution

Authors: Gunnar Karlsson, Olafur Ragnar Helgason, and Vladimir Vukadinovic

Abstract
Mobile communication devices may be used for spreading multimedia data without support of an infrastructure. Such a scheme, where the data is carried by people walking around and relayed from device to device by means of short range radio, could potentially form a public content distribution system that spans vast urban areas. There are basically only three system parameters that can be determined in the design: the transmission range of the nodes, the setup time when nodes make a contact, and their storage capacity. The transport mechanism is the flow of people and it can be studied but not engineered. The question addressed in this paper is how well pedestrian content distribution may work. We answer this question by modeling the mobility of people moving around in a city, constrained by a given topology. The model is supplemented by simulation of similar or related scenarios for validation and extension. Our conclusion is that contents spread well with pedestrian speeds already at low arrival rates into a studied region. Our contributions are both the results on the feasibility of pedestrian content distribution and the queuing analytic model that captures the flow of people.
Cite as

Gunnar Karlsson, Olafur Ragnar Helgason, and Vladimir Vukadinovic. On the Performance of Pedestrian Content Distribution. In Delay and Disruption-Tolerant Networking (DTN) II. Dagstuhl Seminar Proceedings, Volume 9071, pp. 1-23, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)

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@InProceedings{karlsson_et_al:DagSemProc.09071.3,
  author =	{Karlsson, Gunnar and Helgason, Olafur Ragnar and Vukadinovic, Vladimir},
  title =	{{On the Performance of Pedestrian Content Distribution}},
  booktitle =	{Delay and Disruption-Tolerant Networking (DTN) II},
  pages =	{1--23},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2009},
  volume =	{9071},
  editor =	{Kevin Fall and Cecilia Mascolo and J\"{o}rg Ott and Lars Wolf},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.09071.3},
  URN =		{urn:nbn:de:0030-drops-23597},
  doi =		{10.4230/DagSemProc.09071.3},
  annote =	{Keywords: Content distribution, mobile peer-to-peer, ad hoc network, wireless network, mobile communication}
}
Document
DOI: 10.4230/DagSemProc.09071.4
Wireless Epidemic Spread in Dynamic Human Networks

Authors: Eiko Yoneki, Pan Hui, and Jon Crowcroft

Abstract
The emergence of Delay Tolerant Networks (DTNs) has culminated in a new generation of wireless networking. New communication paradigms, which use dynamic interconnectedness as people encounter each other opportunistically, lead towards a world where digital traffic flows more easily. We focus on humanto- human communication in environments that exhibit the characteristics of social networks. This paper describes our study of information flow during epidemic spread in such dynamic human networks, a topic which shares many issues with network-based epidemiology. We explore hub nodes extracted from real world connectivity traces and show their influence on the epidemic to demonstrate the characteristics of information propagation.
Cite as

Eiko Yoneki, Pan Hui, and Jon Crowcroft. Wireless Epidemic Spread in Dynamic Human Networks. In Delay and Disruption-Tolerant Networking (DTN) II. Dagstuhl Seminar Proceedings, Volume 9071, pp. 1-16, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)

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@InProceedings{yoneki_et_al:DagSemProc.09071.4,
  author =	{Yoneki, Eiko and Hui, Pan and Crowcroft, Jon},
  title =	{{Wireless Epidemic Spread in Dynamic Human Networks}},
  booktitle =	{Delay and Disruption-Tolerant Networking (DTN) II},
  pages =	{1--16},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2009},
  volume =	{9071},
  editor =	{Kevin Fall and Cecilia Mascolo and J\"{o}rg Ott and Lars Wolf},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.09071.4},
  URN =		{urn:nbn:de:0030-drops-23585},
  doi =		{10.4230/DagSemProc.09071.4},
  annote =	{Keywords: Time Dependent Networks, Connectivity Modelling and Analysis, Network Measurement, Delay Tolerant Networks, Social Networks}
}

Filters

  • Authors
  • C
  • Crowcroft, Jon
  • F
  • Fall, Kevin
  • H
  • Helgason, Olafur Ragnar
  • Hui, Pan
  • K
  • Karlsson, Gunnar
  • M
  • Mascolo, Cecilia
  • O
  • Ott, Jörg
  • V
  • Vukadinovic, Vladimir
  • W
  • Wolf, Lars
  • Y
  • Yoneki, Eiko

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