MDS-Coded Distributed Storage for Low Delay Wireless Content Delivery

TL;DR

This paper explores the use of MDS codes in distributed storage for wireless networks, demonstrating significant delay reductions in content delivery through analytical delay modeling and comparison with traditional methods.

Contribution

It introduces an analytical model for download delay in MDS-coded distributed storage and shows its effectiveness in reducing content delivery time in wireless networks.

Findings

MDS-coded distributed storage significantly reduces download delay.

Analytical expression for delay under network reliability restoration.

Performance surpasses traditional base station-only delivery methods.

Abstract

We address the use of maximum distance separable (MDS) codes for distributed storage (DS) to enable efficient content delivery in wireless networks. Content is stored in a number of the mobile devices and can be retrieved from them using device-to-device communication or, alternatively, from the base station (BS). We derive an analytical expression for the download delay in the hypothesis that the reliability state of the network is periodically restored. Our analysis shows that MDS-coded DS can dramatically reduce the download time with respect to the reference scenario where content is always downloaded from the BS.