Coded Caching Clusters with Device-to-Device Communications
Loading...
Access rights
openAccess
acceptedVersion
URL
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Date
Major/Subject
Mcode
Degree programme
Language
en
Pages
12
Series
IEEE Transactions on Mobile Computing, Volume 18, issue 2, pp. 264 - 275
Abstract
We consider a geographically constrained caching community where popular data files are cached on mobile terminals and distributed through Device-to-Device (D2D) communications. To ensure availability, data files are protected against user mobility, or churn, with select caching and erasure coding methods. Communication and storage costs are considered, with an objective of minimizing the consumption of radio resources, given an available storage size. We focus on finding the coding method that minimizes the overall cost. Closed-form expressions for the expected consumption of radio resources incurred by data delivery and redundancy maintenance are derived. Closed form transmission costs in a circular caching community with a specific node density and caching method are calculated, when cost obeys a power law of distance. Our results are illustrated by numerical examples and verified by extensive computer simulations.Description
Other note
Citation
Paakkonen, J, Barreal, A, Hollanti, C & Tirkkonen, O 2019, 'Coded Caching Clusters with Device-to-Device Communications', IEEE Transactions on Mobile Computing, vol. 18, no. 2, 8353772, pp. 264 - 275. https://doi.org/10.1109/TMC.2018.2832636