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  4. Mobility-aware coded storage and delivery
 
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Mobility-aware coded storage and delivery
File(s)
OG_TCOM20.pdf (4.13 MB)
Accepted version
Author(s)
Ozfatura, Mehmet
Gunduz, Deniz
Type
Journal Article
Abstract
We consider a cache-enabled heterogeneous cellular network, where mobile users (MUs) connect to multiple cache-enabled small-cell base stations (SBSs) during a video downloading session. SBSs can deliver these requests using their local cache contents as well as by downloading them from a macro-cell base station (MBS), which has access to the file library. We introduce a novel mobility-aware content storage and delivery scheme, which jointly exploits coded storage at the SBSs and coded delivery from the MBS to reduce the backhaul load from the MBS to the SBSs. We show that the proposed scheme provides a significant reduction both in the backhaul load when the cache capacity is sufficiently large, and in the number of sub-files required. Overall, for practical scenarios, in which the number of sub-files that can be created is limited either by the size of the files, or by the protocol overhead, the proposed coded caching and delivery scheme decidedly outperforms state-of-the-art alternatives. Finally, we show that the benefits of the proposed scheme also extends to scenarios with non-uniform file popularities and arbitrary mobility patterns.
Date Issued
2020-06
Date Acceptance
2020-03-09
Citation
IEEE Transactions on Communications, 2020, 68 (6), pp.3275-3285
URI
http://hdl.handle.net/10044/1/78723
URL
https://ieeexplore.ieee.org/document/9040547
DOI
https://www.dx.doi.org/10.1109/TCOMM.2020.2981454
ISSN
0090-6778
Publisher
Institute of Electrical and Electronics Engineers
Start Page
3275
End Page
3285
Journal / Book Title
IEEE Transactions on Communications
Volume
68
Issue
6
Sponsor
Commission of the European Communities
Commission of the European Communities
Identifier
https://ieeexplore.ieee.org/document/9040547
Grant Number
677854
675891
Subjects
Science & Technology
Technology
Engineering, Electrical & Electronic
Telecommunications
Engineering
Streaming media
Cellular networks
Base stations
Libraries
Bipartite graph
Relays
Markov processes
Coded caching
coded storage
heterogeneous cellular networks
MDS codes
mobility
FUNDAMENTAL LIMITS
WIRELESS NETWORKS
POPULARITY
0804 Data Format
0906 Electrical and Electronic Engineering
1005 Communications Technologies
Publication Status
Published
Date Publish Online
2020-03-18
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