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dc.contributor.authorDouik, Ahmed S.
dc.contributor.authorDahrouj, Hayssam
dc.contributor.authorAmin, Osama
dc.contributor.authorAloquibi, Bayan
dc.contributor.authorAl-Naffouri, Tareq Y.
dc.contributor.authorAlouini, Mohamed-Slim
dc.date.accessioned2020-09-08T07:45:06Z
dc.date.available2020-09-08T07:45:06Z
dc.date.issued2020-05-19
dc.date.submitted2020-03-13
dc.identifier.citationDouik, A., Dahrouj, H., Amin, O., Aloquibi, B., Al-Naffouri, T. Y., & Alouini, M.-S. (2020). Mode Selection and Power Allocation in Multi-Level Cache-Enabled Networks. IEEE Communications Letters, 24(8), 1789–1793. doi:10.1109/lcomm.2020.2995554
dc.identifier.issn1558-2558
dc.identifier.issn1089-7798
dc.identifier.doi10.1109/LCOMM.2020.2995554
dc.identifier.urihttp://hdl.handle.net/10754/665008
dc.description.abstractMoving contents proximity to the network edge and proactively caching popular contents at multiple infrastructures are promising directions for solving the backhaul congestion problem. This letter proposes and evaluates a multi-level cache-enabled network, where cache-hit users can fetch their data from the available cache at either small base-stations, unmanned aerial vehicles, or cache-enabled mobile device-to-device users. Cache-miss users, on the other hand, fetch their data from the central cloud via limited capacity backhaul links. This letter considers the problem of maximizing the network weighted-sum rate by jointly determining the users' mode of operation and their transmit powers, subject to backhaul capacity and transmit power constraints. After showing how the association problem can be formulated as a generalized assignment problem, the letter solves the transmit power problem using an iterative function evaluation apprach. The resulting mode-selection and power-allocation (MSPA) iterative algorithm is then tested through numerical simulations, which suggest that, while being easily implementable, the proposed multi-level caching can substantially relieve the backhaul congestion, especially in dense-networks, and at low-backhaul capacity regimes.
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.relation.urlhttps://ieeexplore.ieee.org/document/9096352/
dc.rights(c) 2020 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.titleMode Selection and Power Allocation in Multi-Level Cache-Enabled Networks
dc.typeArticle
dc.contributor.departmentCommunication Theory Lab
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.contributor.departmentElectrical Engineering Program
dc.identifier.journalIEEE Communications Letters
dc.eprint.versionPost-print
dc.contributor.institutionDepartment of Electrical Engineering, California Institute of Technology, Pasadena, CA 91125, USA
dc.contributor.institutionDepartment of Electrical and Computer Engineering,Effat University, Jeddah 22332
dc.contributor.institutionEricsson AB, Stockholm 164 80, Sweden
dc.identifier.volume24
dc.identifier.issue8
dc.identifier.pages1789-1793
kaust.personAmin, Osama
kaust.personAl-Naffouri, Tareq Y.
kaust.personAlouini, Mohamed-Slim
dc.date.accepted2020-05-06
dc.identifier.eid2-s2.0-85089875803
dc.date.published-online2020-05-19
dc.date.published-print2020-08


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