uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
A Testbed and Methodology for Experimental Evaluation of Mobile Ad hoc Networks
Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Computer Systems. (Communication Research)
Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Computer Systems. (Communication Research)
Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Computer Systems. (Communication Research)
2005 (English)In: Proceedings of the First International Conference on Testbeds and Research Infrastructures for the Development of Networks and Communities (TRIDENTCOM), 2005Conference paper, Published paper (Refereed)
Place, publisher, year, edition, pages
2005.
Identifiers
URN: urn:nbn:se:uu:diva-97368OAI: oai:DiVA.org:uu-97368DiVA: diva2:172278
Available from: 2008-05-22 Created: 2008-05-22 Last updated: 2012-05-29Bibliographically approved
In thesis
1. Challenged Networking: An Experimental Study of new Protocols and Architectures
Open this publication in new window or tab >>Challenged Networking: An Experimental Study of new Protocols and Architectures
2008 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

With the growth of Internet, the underlying protocols are increasingly challenged by new technologies and applications. The original Internet protocols were, however, not designed for wireless communication, mobility, long disconnection times, and varying bandwidths. In this thesis, we study challenged networking, and how well old and new protocols operate under such constraints.

Our study is experimental. We build network testbeds and measure the performance of alternative protocols and architectures. We develop novel methodologies for repeatable experiments that combine emulations, simulations and real world experiments. Based on our results we suggest modifications to existing protocols, and we also develop a new network architecture that matches the constraints of a challenged network, in our case, an opportunistic network.

One of our most important contributions is an Ad hoc Protocol Evaluation (APE) testbed. It has been successfully used worldwide. The key to its success is that it significantly lowers the barrier to repeatable experiments involving wireless and mobile computing devices. Using APE, we present side-by-side performance comparisons of IETF MANET routing protocols. A somewhat surprising result is that some ad hoc routing protocols perform a factor 10 worse in the testbed than predicted by a common simulation tool (ns-2). We find that this discrepancy is mainly related to the protocols’ sensing abilities, e.g., how accurately they can infer their neighborhood in a real radio environment. We propose and implement improvements to these protocols based on the results.

Our novel network architecture Haggle is another important contribution. It is based on content addressing and searching. Mobile devices in opportunistic networks exchange content whenever they detect each other. We suggest that the exchange should be based on interests and searches, rather than on destination names and addresses. We argue that content binding should be done late in challenged networks, something which our search approach supports well.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2008. 266 p.
Series
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 450
Keyword
Challenged networking, Network Architecture, Wireless Ad hoc Networks, Delay Tolerant Networks, Opportunistic Networks, Testbeds.
Identifiers
urn:nbn:se:uu:diva-9002 (URN)978-91-554-7239-9 (ISBN)
Public defence
2008-06-13, Polacksbacken Aula, Polacksbacken Aula, Lägerhyddsvägen 2, SE-75237 Uppsala, 13:15 (English)
Opponent
Supervisors
Available from: 2008-05-22 Created: 2008-05-22 Last updated: 2011-02-18Bibliographically approved

Open Access in DiVA

No full text

Authority records BETA

Nordström, ErikGunningberg, Per

Search in DiVA

By author/editor
Nordström, ErikGunningberg, Per
By organisation
Computer Systems

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 532 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf