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The capacity of caching networks has received considerable attention in the past few years. A particularly studied setting is the shared link caching network, in which a single source with access to a file library communicates with multiple…

Information Theory · Computer Science 2015-11-25 Mingyue Ji , Antonia Tulino , Jaime Llorca , Giuseppe Caire

In a secure coded caching system, a central server balances the traffic flow between peak and off-peak periods by distributing some public data to the users' caches in advance. Meanwhile, these data are securely protected against the…

Information Theory · Computer Science 2019-10-21 Kangning Ma , Shuo Shao

This paper considers the secretive coded caching problem with shared caches in which no user must have access to the files that it did not demand. In a shared cache network, the users are served by a smaller number of helper caches and each…

Information Theory · Computer Science 2021-10-22 Elizabath Peter , K. K. Krishnan Namboodiri , B. Sundar Rajan

Decentralized coded caching scheme, introduced by Maddah-Ali and Niesen, assumes that the caches are filled with no coordination. This work identifies a decentralized coded caching scheme -- under the assumption of uncoded placement -- for…

Information Theory · Computer Science 2021-01-26 Elizabath Peter , B. Sundar Rajan

This paper investigates a setup consisting of multiple transmitters serving multiple cache-enabled clients through a linear network, which covers both wired and wireless transmission situations. We investigate decentralized coded caching…

Information Theory · Computer Science 2021-09-15 Mohammad Mahmoudi , Mohammad Javad Sojdeh , Seyed Pooya Shariatpanahi

Coded caching is used to reduce network congestion during peak hours. A single server is connected to a set of users through a bottleneck link, which generally is assumed to be error-free. During non-peak hours, all the users have full…

Information Theory · Computer Science 2017-12-22 Nujoom Sageer Karat , Anoop Thomas , B. Sundar Rajan

We investigate the demand private coded caching problem, which is an $(N,K)$ coded caching problem with $N$ files, $K$ users, each equipped with a cache of size $M$, and an additional privacy constraint on user demands. We first present a…

Information Theory · Computer Science 2024-05-07 Qinyi Lu , Nan Liu , Wei Kang

We investigate the problem of coded caching for nonuniform demands when the structured clique cover algorithm proposed by Maddah-Ali and Niesen for decentralized caching is used for delivery. We apply this algorithm to all user demands…

Information Theory · Computer Science 2018-04-04 Seyed Ali Saberali , Lutz Lampe , Ian Blake

Coded caching utilizes proper file subpacketization and coded delivery to make full use of the multicast opportunities in content delivery, to alleviate file transfer load in massive content delivery scenarios. Most existing work considers…

Information Theory · Computer Science 2021-10-01 Jialing Liao , Olav Tirkkonen

It has been recently established that joint design of content delivery and storage (coded caching) can significantly improve performance over conventional caching. This has also been extended to the case when content has non-uniform…

Information Theory · Computer Science 2016-11-17 Jad Hachem , Nikhil Karamchandani , Suhas Diggavi

Classical coded caching setting avails each user to have one dedicated cache. This is generalized to a more general shared cache scheme and the exact expression for the worst case rate was derived in [E. Parrinello, A. Unsal, P. Elia,…

Information Theory · Computer Science 2019-01-11 Nujoom Sageer Karat , Spandan Dey , Anoop Thomas , B. Sundar Rajan

Cache-aided content delivery is studied in a multi-server system with $P$ servers and $K$ users, each equipped with a local cache memory. In the delivery phase, each user connects randomly to any $\rho$ out of $P$ servers. Thanks to the…

Information Theory · Computer Science 2020-03-12 Nitish Mital , Deniz Gunduz , Cong Ling

We consider the problem of \emph{secretive coded caching} in a shared cache setup where the number of users accessing a particular \emph{helper cache} is more than one, and every user can access exactly one helper cache. In secretive coded…

Information Theory · Computer Science 2021-07-02 Shreya Shrestha Meel , B. Sundar Rajan

Existing decentralized coded caching solutions cannot guarantee small loads in the general scenario with arbitrary file sizes and cache sizes. In this paper, we propose an optimization framework for decentralized coded caching in the…

Information Theory · Computer Science 2019-05-07 Qi Wang , Ying Cui , Sian Jin , Junni Zou , Chenglin Li , Hongkai Xiong

To address the exponentially rising demand for wireless content, use of caching is emerging as a potential solution. It has been recently established that joint design of content delivery and storage (coded caching) can significantly…

Information Theory · Computer Science 2016-01-01 Jad Hachem , Nikhil Karamchandani , Suhas Diggavi

Caching is an approach to smoothen the variability of traffic over time. Recently it has been proved that the local memories at the users can be exploited for reducing the peak traffic in a much more efficient way than previously believed.…

Information Theory · Computer Science 2015-12-22 Saeid Sahraei , Michael Gastpar

Caching is an efficient way to reduce peak-hour network traffic congestion by storing some contents at user's local cache without knowledge of later demands. Maddah-Ali and Niesen initiated a fundamental study of caching systems; they…

Information Theory · Computer Science 2015-11-10 Kai Wan , Daniela Tuninetti , Pablo Piantanida

In this paper, we consider a multi-access coded caching system with decentralized prefetching, where a server hosts $N$ files, each of size $F$ bits, and is connected to $K$ users through a shared link. There are $c$ caches distributed…

Information Theory · Computer Science 2024-06-25 Monolina Dutta , Anoop Thomas , B. Sundar Rajan

Caching at the wireless edge nodes is a promising way to boost the spatial and spectral efficiency, for the sake of alleviating networks from content-related traffic. Coded caching originally introduced by Maddah-Ali and Niesen…

Information Theory · Computer Science 2022-03-18 Kai Wan , Minquan Cheng , Mari Kobayashi , Giuseppe Caire

Caching of popular content during off-peak hours is a strategy to reduce network loads during peak hours. Recent work has shown significant benefits of designing such caching strategies not only to deliver part of the content locally, but…

Information Theory · Computer Science 2016-06-14 Nikhil Karamchandani , Urs Niesen , Mohammad Ali Maddah-Ali , Suhas Diggavi