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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

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

A location-aware multi-antenna coded caching scheme is proposed for applications with location-dependent data requests, such as wireless immersive experience, where users are immersed in a three-dimensional virtual world. The wireless…

Information Theory · Computer Science 2023-07-11 Hamidreza Bakhshzad Mahmoodi , MohammadJavad Salehi , Antti Tolli

Despite significant progress in the caching literature concerning the worst case and uniform average case regimes, the algorithms for caching with nonuniform demands are still at a basic stage and mostly rely on simple grouping and…

Information Theory · Computer Science 2018-02-01 Pierre Quinton , Saeid Sahraei , Michael Gastpar

Caching is an efficient way to reduce peak hour network traffic congestion by storing some contents at the user's cache without knowledge of later demands. Coded caching strategy was originally proposed by Maddah-Ali and Niesen to give an…

Information Theory · Computer Science 2018-03-19 Kai Wan , Daniela Tuninetti , Pablo Piantanida , Mingyue Ji

Caching appears to be an efficient way to reduce peak hour network traffic congestion by storing some content at the user's cache without knowledge of later demands. Recently, Maddah-Ali and Niesen proposed a two-phase, placement and…

Information Theory · Computer Science 2016-01-28 Kai Wan , Daniela Tuninetti , Pablo Piantanida

The hierarchical caching system where a server connects with multiple mirror sites, each connecting with a distinct set of users, and both the mirror sites and users are equipped with caching memories has been widely studied. However all…

Information Theory · Computer Science 2022-09-21 Yun Kong , Youlong Wu , Minquan Cheng

Coded caching is a technique for achieving increased throughput in cached networks during peak hours. Placement delivery arrays (PDAs) capture both placement and delivery scheme requirements in coded caching in a single array. Lifting is a…

Information Theory · Computer Science 2023-05-11 V. R. Aravind , Pradeep Kiran Sarvepalli , Andrew Thangaraj

Centralized coded caching problem is studied for the two-user scenario, considering heterogeneous cache capacities at the users and private channels from the server to the users, in addition to a shared channel. Optimal caching and delivery…

Information Theory · Computer Science 2019-01-07 Daming Cao , Deyao Zhang , Pengyao Chen , Nan Liu , Wei Kang , Deniz Gündüz

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

We propose a new decentralized coded caching scheme for a two-phase caching network, where the data placed in user caches in the prefetching phase are random portions of a maximal distance separable (MDS) coded version of the original…

Information Theory · Computer Science 2018-06-27 Yi-Peng Wei , Sennur Ulukus

We consider a network consisting of a file server connected through a shared link to a number of users, each equipped with a cache. Knowing the popularity distribution of the files, the goal is to optimally populate the caches such as to…

Information Theory · Computer Science 2017-06-23 Urs Niesen , Mohammad Ali Maddah-Ali

The rapid growth of data volume and the accompanying congestion problems over the wireless networks have been critical issues to content providers. A novel technique, termed as coded cache, is proposed to relieve the burden. Through…

Networking and Internet Architecture · Computer Science 2015-04-08 Wei Huang , Sinong Wang , Lianghui Ding , Feng Yang , Wenjun Zhang

Replicating or caching popular content in memories distributed across the network is a technique to reduce peak network loads. Conventionally, the main performance gain of this caching was thought to result from making part of the requested…

Information Theory · Computer Science 2015-09-08 Mohammad Ali Maddah-Ali , Urs Niesen

Caching is an efficient way to reduce network traffic congestion during peak hours by storing some content at the user's local cache memory without knowledge of later demands. For the shared-link caching model, Maddah-Ali and Niesen (MAN)…

Information Theory · Computer Science 2020-06-22 Kai Wan , Giuseppe Caire

Distributed computing enables scalable machine learning by distributing tasks across multiple nodes, but ensuring privacy in such systems remains a challenge. This paper introduces a novel private coded distributed computing model that…

Information Theory · Computer Science 2026-01-13 Shanuja Sasi , Onur Günlü

In this work, a distributed server system composed of multiple servers that holds some coded files and multiple users that are interested in retrieving the linear functions of the files is investigated, where the servers are robust, blind…

Information Theory · Computer Science 2024-07-25 Qifa Yan , Xiaohu Tang , Zhengchun Zhou

Coded caching has the potential to greatly reduce network traffic by leveraging the cheap and abundant storage available in end-user devices so as to create multicast opportunities in the delivery phase. In the seminal work by Maddah-Ali…

Information Theory · Computer Science 2020-01-13 Kai Wan , Hua Sun , Mingyue Ji , Daniela Tuninetti , Giuseppe Caire

In this work, we consider a coded caching model called \textit{hotplug coded caching}, in which some users are offline during the delivery phase. The concept of Hotplug Placement Delivery Arrays (HpPDAs) for hotplug coded caching systems…

Information Theory · Computer Science 2025-07-21 Mallikharjuna Chinnapadamala , Charul Rajput , B. Sundar Rajan

Coded caching is a technique that generalizes conventional caching and promises significant reductions in traffic over caching networks. However, the basic coded caching scheme requires that each file hosted in the server be partitioned…

Information Theory · Computer Science 2018-02-20 Li Tang , Aditya Ramamoorthy