Mobility and popularity-aware coded small-cell caching

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Title: Mobility and popularity-aware coded small-cell caching
Authors: Ozfatura, E
Gunduz, D
Item Type: Journal Article
Abstract: In heterogeneous cellular networks with caching capability, due to mobility of users and storage constraints of small-cell base stations (SBSs), users may not be able to download all of their requested content from the SBSs within the delay deadline of the content. In that case, the users are directed to the macro-cell base station (MBS) in order to satisfy the service quality requirement. Coded caching is exploited here to minimize the amount of data downloaded from the MBS, taking into account the mobility of the users as well as the popularity of the contents. An optimal distributed caching policy is presented when the delay deadline is below a certain threshold, and a distributed greedy caching policy is proposed when the delay deadline is relaxed.
Issue Date: 17-Nov-2017
Date of Acceptance: 7-Nov-2017
URI: http://hdl.handle.net/10044/1/53624
DOI: 10.1109/LCOMM.2017.2774799
ISSN: 1089-7798
Publisher: Institute of Electrical and Electronics Engineers
Start Page: 288
End Page: 291
Journal / Book Title: IEEE Communications Letters
Volume: 22
Issue: 2
Copyright Statement: © 2017 I EEE. Personal u se is perm itted, but republication/redistri bution requires IEEE permission. See http://www.ieee.org/publications_standards/publications/rights/index.html for more information.
Sponsor/Funder: Commission of the European Communities
Commission of the European Communities
Funder's Grant Number: 677854
675891
Keywords: Science & Technology
Technology
Telecommunications
Heterogeneous cellular network
content caching
user mobility
DELIVERY
NETWORKS
0906 Electrical And Electronic Engineering
1005 Communications Technologies
0805 Distributed Computing
Networking & Telecommunications
Publication Status: Published
Appears in Collections:Faculty of Engineering
Electrical and Electronic Engineering



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