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dc.contributor.authorZhao, Nan
dc.contributor.authorLiu, Xiaonan
dc.contributor.authorChen, Yunfei
dc.contributor.authorZhang, Shun
dc.contributor.authorLi, Zan
dc.contributor.authorChen, Bingcai
dc.contributor.authorAlouini, Mohamed-Slim
dc.date.accessioned2018-11-08T11:54:41Z
dc.date.available2018-11-08T11:54:41Z
dc.date.issued2018-10-24
dc.identifier.citationZhao N, Liu X, Chen Y, Zhang S, Li Z, et al. (2018) Caching D2D Connections in Small-Cell Networks. IEEE Transactions on Vehicular Technology: 1–1. Available: http://dx.doi.org/10.1109/tvt.2018.2877645.
dc.identifier.issn0018-9545
dc.identifier.issn1939-9359
dc.identifier.doi10.1109/tvt.2018.2877645
dc.identifier.urihttp://hdl.handle.net/10754/629723
dc.description.abstractSmall-cell network is a promising solution to high video traffic. However, with the increasing number of devices, it cannot meet the requirements from all users. Thus, we propose a caching device-to-device (D2D) scheme for small-cell networks, in which caching placement and D2D establishment are combined. In this scheme, a limited cache is equipped at each user, and the popular files can be prefetched at the local cache during off-peak period. Thus, dense D2D connections can be established during peak time aided by these cached users, which will reduce the backhaul pressure significantly. To do this, first, an optimal caching scheme is formulated according to the popularity to maximize the total offloading probability of the D2D system. Thus, most edge users can obtain their required video files from the caches at users nearby, instead from the small-cell base station. Then, the sum rate of D2D links is analyzed in different signal-to-noise ratio (SNR) regions. Furthermore, to maximize the throughput of D2D links with low complexity, three D2D-link scheduling schemes are proposed with the help of bipartite graph theory and Kuhn-Munkres algorithm for low, high and medium SNRs, respectively. Simulation results are presented to show the effectiveness of the proposed scheme.
dc.description.sponsorshipWe thank the editor and reviewers for their detailed reviews and constructive comments, which have greatly improved the quality of this paper.
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.relation.urlhttps://ieeexplore.ieee.org/document/8502838
dc.rights(c) 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
dc.subjectBipartite graph theory
dc.subjectcaching
dc.subjectdevice-todevice
dc.subjectKuhn-Munkres algorithm
dc.subjectlink scheduling
dc.subjectsmall-cell networks
dc.titleCaching D2D Connections in Small-Cell Networks
dc.typeArticle
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.contributor.departmentElectrical Engineering Program
dc.contributor.departmentEE program, King Abdullah University of Science and Technology, Thuwal, Mekkah Province, Saudi Arabia
dc.identifier.journalIEEE Transactions on Vehicular Technology
dc.eprint.versionPost-print
dc.contributor.institutionSchool of Inform. and Commun. Eng., Dalian University of Technology, Dalian, 116024, P. R. China
dc.contributor.institutionSchool of Engineering, University ofWarwick, Coventry CV4 7AL, U.K.
dc.contributor.institutionState Key Laboratory of Integrated Services Networks, Xidian University, Xi’an 710071, P. R. China.
kaust.personAlouini, Mohamed-Slim
refterms.dateFOA2018-11-08T12:37:07Z
dc.date.published-online2018-10-24
dc.date.published-print2018-12


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