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An adaptive and efficient buffer management scheme for resource-constrained delay tolerant networks
Department of Computer Science, Bahria University, Islamabad.
Department of Computer Science, Bahria University, Islamabad.
College of Computer and Information Sciences, Almuzahmiyah, King Saud University.
Department of Computer Science, Bahria University, Islamabad.
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Number of Authors: 52016 (English)In: Wireless networks, ISSN 1022-0038, E-ISSN 1572-8196, Vol. 22, no 7, p. 2189-2201Article in journal (Refereed) Published
Abstract [en]

Provisioning buffer management mechanism is especially crucial in resource-constrained delay tolerant networks (DTNs) as maximum data delivery ratio with minimum overhead is expected in highly congested environments. However, most DTN protocols do not consider resource limitations (e.g., buffer, bandwidth) and hence, results in performance degradation. To strangle and mitigate the impact of frequent buffer overflows, this paper presents an adaptive and efficient buffer management scheme called size-aware drop (SAD) that strives to improve buffer utilization and avoid unnecessary message drops. To improve data delivery ratio, SAD exactly determines the requirement based on differential of newly arrived message(s) and available space. To vacate inevitable space from a congested buffer, SAD strives to avoid redundant message drops and deliberate to pick and discard most appropriate message(s) to minimize overhead. The performance of SAD is validated through extensive simulations in realistic environments (i.e., resource-constrained and congested) with different mobility models (i.e., Random Waypoint and disaster). Simulation results demonstrate the performance supremacy of SAD in terms of delivery probability and overhead ratio besides other metrics when compared to contemporary schemes based on Epidemic (DOA and DLA) and PRoPHET (SHLI and MOFO).

Place, publisher, year, edition, pages
2016. Vol. 22, no 7, p. 2189-2201
National Category
Media and Communication Technology
Research subject
Mobile and Pervasive Computing
Identifiers
URN: urn:nbn:se:ltu:diva-9705DOI: 10.1007/s11276-015-1085-yISI: 000384429700006Scopus ID: 2-s2.0-84945232195Local ID: 8604b958-5cd1-415f-a363-2a396da8d59dOAI: oai:DiVA.org:ltu-9705DiVA, id: diva2:982643
Note

Validerad; 2016; Nivå 2; 2016-11-01 (andbra)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Vasilakos, Athanasios

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