Opportunistic offloading of deadline-constrained bulk cellular traffic in vehicular DTNs

Yao, Hong, Zeng, Deze, Huang, Huawei, Guo, Song, Barnawi, Ahmed and Stojmenovic, Ivan 2015, Opportunistic offloading of deadline-constrained bulk cellular traffic in vehicular DTNs, IEEE transactions on computers, vol. 64, no. 12, pp. 3515-3527, doi: 10.1109/TC.2015.2401012.

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Title Opportunistic offloading of deadline-constrained bulk cellular traffic in vehicular DTNs
Author(s) Yao, Hong
Zeng, Deze
Huang, Huawei
Guo, Song
Barnawi, Ahmed
Stojmenovic, Ivan
Journal name IEEE transactions on computers
Volume number 64
Issue number 12
Start page 3515
End page 3527
Total pages 13
Publisher IEEE
Place of publication Piscataway, N.J.
Publication date 2015-12-01
ISSN 0018-9340
Keyword(s) Cellular traffic offloading
Opportunistic networks
Minimum offloading problem
Delay tolerant networks
Summary The ever-growing cellular traffic demand has laid a heavy burden on cellular networks. The recent rapid development in vehicle-to-vehicle communication techniques makes vehicular delay-tolerant network (VDTN) an attractive candidate for traffic offloading from cellular networks. In this paper, we study a bulk traffic offloading problem with the goal of minimizing the cellular communication cost under the constraint that all the subscribers receive their desired whole content before it expires. It needs to determine the initial offloading points and the dissemination scheme for offloaded traffic in a VDTN. By novelly describing the content delivery process via a contact-based flow model, we formulate the problem in a linear programming (LP) form, based on which an online offloading scheme is proposed to deal with the network dynamics (e.g., vehicle arrival/departure). Furthermore, an offline LP-based
analysis is derived to obtain the optimal solution. The high efficiency of our online algorithm is extensively validated by simulation results.
Language eng
DOI 10.1109/TC.2015.2401012
Field of Research 0803 Computer Software
0805 Distributed Computing
1006 Computer Hardware
Socio Economic Objective 970108 Expanding Knowledge in the Information and Computing Sciences
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, IEEE
Persistent URL http://hdl.handle.net/10536/DRO/DU:30082117

Document type: Journal Article
Collection: School of Information Technology
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