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Caching in opportunistic networks with churn
KTH, School of Electrical Engineering (EES), Communication Networks. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.
KTH, School of Electrical Engineering (EES), Communication Networks. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.ORCID iD: 0000-0002-9176-3454
KTH, School of Electrical Engineering (EES), Communication Networks. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.
KTH, School of Electrical Engineering (EES), Communication Networks. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.ORCID iD: 0000-0002-3704-1338
2012 (English)In: 2012 9th Annual Conference on Wireless On-Demand Network Systems and Services, WONS 2012, IEEE Communications Society, 2012, 39-42 p.Conference paper, Published paper (Refereed)
Abstract [en]

In this paper we examine opportunistic content distribution. We design and evaluate a caching strategy where a node will fetch and share contents on behalf of other nodes, although the contents are not of its own interest. We propose three caching options for improving the use of network resources: relay request on demand, hop-limit, and greedy relay request. The proposed strategies are implemented in the OMNeT++ simulator and evaluated on mobility traces from Legion Studio that have churn. We also compare our strategies with a strategy from the literature. The results are analyzed and they show that the use of opportunistic caching for a community of nodes may enhance the performance marginally while overhead increases significantly.

Place, publisher, year, edition, pages
IEEE Communications Society, 2012. 39-42 p.
Keyword [en]
ad hoc networks, content distribution, delay tolerant networks, opportunistic communication, Wireless communication
National Category
Communication Systems
Identifiers
URN: urn:nbn:se:kth:diva-99810DOI: 10.1109/WONS.2012.6152233Scopus ID: 2-s2.0-84857871561ISBN: 9781457717222 (print)OAI: oai:DiVA.org:kth-99810DiVA: diva2:542576
Conference
2012 9th Annual Conference on Wireless On-Demand Network Systems and Services, WONS 2012; Courmayeur; 9 January 2012 through 11 January 2012
Funder
ICT - The Next Generation
Note

QC 20120802

Available from: 2012-08-02 Created: 2012-08-02 Last updated: 2013-09-09Bibliographically approved

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Kouyoumdjieva, SylviaKarlsson, Gunnar

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Chupisanyarote, SanpetchKouyoumdjieva, SylviaHelgason, ÓlafurKarlsson, Gunnar
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