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Mobile edge caching enables content delivery directly within the radio access network, which effectively alleviates the backhaul burden and reduces round-trip latency. To fully exploit the edge resources, the most popular contents should be…

Networking and Internet Architecture · Computer Science 2017-09-19 Peng Yang , Ning Zhang , Shan Zhang , Li Yu , Junshan Zhang , Xuemin Shen

Today's mobile data traffic is dominated by content-oriented traffic. Caching popular contents at the network edge can alleviate network congestion and reduce content delivery latency. This paper provides a comprehensive and unified study…

Information Theory · Computer Science 2019-04-17 Meixia Tao , Deniz Gündüz , Fan Xu , Joan S. Pujol Roig

Caching the popular multimedia content is a promising way to unleash the ultimate potential of wireless networks. In this paper, we contribute to proposing and analyzing the cache-based content delivery in a three-tier heterogeneous network…

Information Theory · Computer Science 2015-08-13 Chenchen Yang , Yao Yao , Zhiyong Chen , Bin Xia

The surge of mobile data traffic forces network operators to cope with capacity shortage. The deployment of small cells in 5G networks is meant to reduce latency, backhaul traffic and increase radio access capacity. In this context, mobile…

Computer Science and Game Theory · Computer Science 2016-12-07 Francesco De Pellegrini , Antonio Massaro , Leonardo Goratti , Rachid El-Azouzi

Caching at the network edge has emerged as a viable solution for alleviating the severe capacity crunch in modern content centric wireless networks by leveraging network load-balancing in the form of localized content storage and delivery.…

Information Theory · Computer Science 2016-06-15 Avik Sengupta , Ravi Tandon

As the capacity demand of mobile applications keeps increasing, the backhaul network is becoming a bottleneck to support high quality of experience (QoE) in next-generation wireless networks. Content caching at base stations (BSs) is a…

Information Theory · Computer Science 2015-09-03 Xi Peng , Juei-Chin Shen , Jun Zhang , Khaled B. Letaief

Cellular data traffic almost doubles every year, greatly straining network capacity. The main driver for this development is wireless video. Traditional methods for capacity increase (like using more spectrum and increasing base station…

Information Theory · Computer Science 2014-05-23 Andreas F. Molisch , Giuseppe Caire , David Ott , Jeffrey R. Foerster , Dilip Bethanabhotla , Mingyue Ji

Caching at the wireless edge can be used to keep up with the increasing demand for high-definition wireless video streaming. By prefetching popular content into memory at wireless access points or end-user devices, requests can be served…

Information Theory · Computer Science 2019-12-03 Parisa Hassanzadeh , Antonia M. Tulino , Jaime Llorca , Elza Erkip

Video content delivery at the wireless edge continues to be challenged by insufficient bandwidth and highly dynamic user behavior which affects both effective throughput and latency. Caching at the network edge and coded transmissions have…

Networking and Internet Architecture · Computer Science 2020-01-22 Lalhruaizela Chhangte , Emanuele Viterbo , D Manjunath , Nikhil Karamchandani

Caching the content closer to the user equipments (UEs) in heterogenous cellular networks (HetNets) improves user-perceived Quality-of-Service (QoS) while lowering the operators backhaul usage/costs. Nevertheless, under the current…

Information Theory · Computer Science 2019-02-01 M. G. Khoshkholgh , Keivan Navaie , Kang G. Shin , V. C. M. Leung , Halim Yanikomeroglu

Caching is emerging as a vital tool for alleviating the severe capacity crunch in modern content-centric wireless networks. The main idea behind caching is to store parts of popular content in end-users' memory and leverage the locally…

Information Theory · Computer Science 2014-12-12 Avik Sengupta , Ravi Tandon , T. Charles Clancy

This paper addresses the challenge of edge caching in dynamic environments, where rising traffic loads strain backhaul links and core networks. We propose a Proximal Policy Optimization (PPO)-based caching strategy that fully incorporates…

Networking and Internet Architecture · Computer Science 2024-11-18 Farnaz Niknia , Ping Wang

We investigate the fundamental information theoretic limits of cache-aided wireless networks, in which edge nodes (or transmitters) are endowed with caches that can store popular content, such as multimedia files. This architecture aims to…

Information Theory · Computer Science 2015-12-25 Avik Sengupta , Ravi Tandon , Osvaldo Simeone

Current learning-based edge caching schemes usually suffer from dynamic content popularity, e.g., in the emerging short video platforms, users' request patterns shift significantly over time and across different edges. An intuitive solution…

Multimedia · Computer Science 2023-08-09 Bowei He , Yinan Mao , Shiji Zhou , Chen Ma , Zhi Wang

The rapid increase in data traffic demand has overloaded existing cellular networks. Planned upgrades in the communication architecture (e.g. LTE), while helpful, are not expected to suffice to keep up with demand. As a result, extensive…

Networking and Internet Architecture · Computer Science 2015-03-03 Pavlos Sermpezis , Luigi Vigneri , Thrasyvoulos Spyropoulos

Nowadays, data caching is being used as a high-speed data storage layer in mobile edge computing networks employing flow control methodologies at an exponential rate. This study shows how to discover the best architecture for backhaul…

Networking and Internet Architecture · Computer Science 2022-11-29 Amir Ziaeddini , Amin Mohajer , Davoud Yousefi , A. Mirzaei , Shu Gonglee

Caching of popular content on wireless nodes is recently proposed as a means to reduce congestion in the backbone of cellular networks and to improve Quality of Service. From a network point of view, the goal is to offload as many users as…

Networking and Internet Architecture · Computer Science 2017-07-11 Jonatan Krolikowski , Anastasios Giovanidis , Marco Di Renzo

Caching at base stations (BSs) is a promising approach for supporting the tremendous traffic growth of content delivery over future small-cell wireless networks with limited backhaul. This paper considers exploiting spatial caching…

Signal Processing · Electrical Eng. & Systems 2018-08-09 Wei Han , An Liu , Wei Yu , Vincent K. N. Lau

Caching of popular contents at cellular base stations, i.e., edge caching, in order to eliminate duplicate transmission through the backhaul can reduce the latency of data delivery in $5$G networks. However, since caching can only reduce…

Information Theory · Computer Science 2018-02-14 Tachporn Sanguanpuak , Sudarshan Guruacharya , Ekram Hossain , Dusit Niyato , Nandana Rajatheva , Matti Latva-aho

With files proactively stored at base stations (BSs), mobile edge caching enables direct content delivery without remote file fetching, which can reduce the end-to-end delay while relieving backhaul pressure. To effectively utilize the…

Networking and Internet Architecture · Computer Science 2017-10-25 Shan Zhang , Peter He , Katsuya Suto , Peng Yang , Lian Zhao , Xuemin , Shen