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A Proxy-Based Collaboration System to Minimize Content Download Time and Energy Consumption
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2017 (English)In: IEEE Transactions on Mobile Computing, ISSN 1536-1233, E-ISSN 1558-0660, Vol. 16, no 8, p. 2105-2117Article in journal (Refereed) Published
Abstract [en]

Mobile collaborative community (MCC) is an emerging technology that allows multiple mobile nodes (MNs) to perform a resource intensive task, such as large content download, in a cooperative manner. In this paper, we introduce a proxy-based collaboration system for the MCC where a content proxy (CProxy) determines the amount of chunks and the sharing order scheduled to each MN, and the received chunks are shared among MNs via Wi-Fi Direct. We formulate a multi-objective optimization problem to minimize both the collaborative content download time and the energy consumption in an MCC, and propose a heuristic algorithm for solving the optimization problem. Extensive simulations are carried out to evaluate the effects of the number of MNs, the wireless bandwidth, the content size, and dynamic channel conditions on the content download time and the energy consumption. Our results demonstrate that the proposed algorithm can achieve near-optimal performance and significantly reduce the content download time and has an energy consumption comparable to that of other algorithms.

Place, publisher, year, edition, pages
IEEE Computer Society, 2017. Vol. 16, no 8, p. 2105-2117
Keywords [en]
Mobile collaborative community, content download, proxy-based collaboration system, alpha-local search of sharing order (alpha-LSSO)
National Category
Computer Sciences
Identifiers
URN: urn:nbn:se:kth:diva-211325DOI: 10.1109/TMC.2016.2616871ISI: 000405069600003Scopus ID: 2-s2.0-85024478014OAI: oai:DiVA.org:kth-211325DiVA, id: diva2:1129123
Funder
Swedish Foundation for Strategic Research , NRF-2014R1A2A1A12066986
Note

QC 20170801

Available from: 2017-08-01 Created: 2017-08-01 Last updated: 2018-01-13Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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More styles
Language
  • de-DE
  • en-GB
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  • nn-NB
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  • Other locale
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Output format
  • html
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  • asciidoc
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