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dc.contributor.authorAtat, Rachad
dc.contributor.authorYaacoub, Elias E.
dc.contributor.authorAlouini, Mohamed-Slim
dc.contributor.authorAbu-Dayya, Adnan A.
dc.date.accessioned2015-08-03T10:37:24Z
dc.date.available2015-08-03T10:37:24Z
dc.date.issued2012-11-20
dc.identifier.issn15308669
dc.identifier.doi10.1002/wcm.2327
dc.identifier.urihttp://hdl.handle.net/10754/562416
dc.description.abstractCooperative ad hoc networks for the efficient distribution of content of common interest are studied in the case of fast channel variations. Mobiles are grouped into cooperative clusters for the purpose of receiving the content with optimized energy efficiency. Data are sent to mobile terminals on a long range (LR) link, and then, the terminals exchange the content by using an appropriate short range wireless technology. When channel state information is available for the LR links, unicasting is used on the LR. When accurate channel state information is not available, threshold-based multicasting is implemented on the LR. Energy minimization is formulated as an optimization problem for each scenario, and the optimal solutions are determined in closed form in scenarios with fast channel variations. Results show significant energy savings in the proposed schemes compared with the noncooperative case and other previous related work. Furthermore, the energy minimizing solutions are shown to lead to reduced delay in the content distribution process. Practical implementation aspects of the proposed methods are also discussed. © 2012 John Wiley & Sons, Ltd.
dc.description.sponsorshipThis work was made possible by NPRP grant # 09-180-2-078 from the Qatar National Research Fund (a member of the Qatar Foundation). The statements made herein are solely the responsibility of the authors.
dc.publisherWiley
dc.subjectad hoc networks
dc.subjectcontent distribution
dc.subjectdelay reduction
dc.subjectenergy minimization
dc.subjectpeer-to-peer cooperation
dc.subjectshort range communications
dc.titleCooperative ad hoc networks for energy and delay efficient content distribution with fast channel variations
dc.typeArticle
dc.contributor.departmentElectrical Engineering Program
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.contributor.departmentCommunication Theory Lab
dc.identifier.journalWireless Communications and Mobile Computing
dc.contributor.institutionQatar Mobility Innovations Center, Qatar Science and Technology Park, PO Box 210531, Doha, Qatar
kaust.personAtat, Rachad
kaust.personAlouini, Mohamed-Slim
dc.date.published-online2012-11-20
dc.date.published-print2012-12-25


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