Delay-Aware Coded Caching for Mobile Users
Abstract
In this work, we study the trade-off between the cache capacity and the user delay for a cooperative Small Base Station (SBS) coded caching system with mobile users. First, a delay-aware coded caching policy, which takes into account the popularity of the files and the maximum re-buffering delay to minimize the average rebuffering delay of a mobile user under a given cache capacity constraint is introduced. Subsequently, we address a scenario where some files are served by the macro-cell base station (MBS) when the cache capacity of the SBSs is not sufficient to store all the files in the library. For this scenario, we develop a coded caching policy that minimizes the average amount of data served by the MBS under an average re-buffering delay constraint.
Keywords
Cite
@article{arxiv.1807.02548,
title = {Delay-Aware Coded Caching for Mobile Users},
author = {Emre Ozfatura and Thomas Rarris and Deniz Gunduz and Ozgur Ercetin},
journal= {arXiv preprint arXiv:1807.02548},
year = {2018}
}