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Edge-caching has received much attention as an efficient technique to reduce delivery latency and network congestion during peak-traffic times by bringing data closer to end users. Existing works usually design caching algorithms separately…

Information Theory · Computer Science 2018-02-08 Thang X. Vu , Symeon Chatzinotas , Bjorn Ottersten

In this work, we propose a content caching and delivery strategy to maximize throughput capacity in cache-enabled wireless networks. To this end, efficient betweenness (EB), which indicates the ratio of content delivery paths passing…

Information Theory · Computer Science 2020-05-11 Chenxi Zhao , Junyu Liu , Min Sheng , Yanpeng Dai

Locally caching contents at the network edge constitutes one of the most disruptive approaches in $5$G wireless networks. Reaping the benefits of edge caching hinges on solving a myriad of challenges such as how, what and when to…

Information Theory · Computer Science 2015-09-30 Ejder Baştuğ , Mehdi Bennis , Mérouane Debbah

We propose a cache-enabled opportunistic cooperative MIMO (CoMP) framework for wireless video streaming. By caching a portion of the video files at the relays (RS) using a novel MDS-coded random cache scheme, the base station (BS) and RSs…

Information Theory · Computer Science 2016-11-17 An Liu , Vincent Lau

Obtaining accurate global channel state information (CSI) at multiple transmitter devices is critical to the performance of many coordinated transmission schemes. Practical CSI local feedback often leads to noisy and partial CSI estimates…

Information Theory · Computer Science 2017-03-22 Qianrui Li , David Gesbert , Nicolas Gresset

Previous works on cache-enabled small-cell networks (SCNs) with probabilistic caching often assume that each user is connected to the nearest small base station (SBS) among all that have cached its desired content. The user may, however,…

Information Theory · Computer Science 2017-09-14 Xianzhe Xu , Meixia Tao

Caching contents at the network edge is an efficient mean for offloading traffic, reducing latency and improving users' quality-of-experience. In this letter, we focus on aspects of storage-bandwidth tradeoffs in which small cell base…

Information Theory · Computer Science 2016-11-18 Syed Tamoor-ul-Hassan , Mehdi Bennis , Pedro H. J. Nardelli , Matti Latva-Aho

Recent years have witnessed an exponential growth of mobile data traffic, which may lead to a serious traffic burn on the wireless networks and considerable power consumption. Network densification and edge caching are effective approaches…

Information Theory · Computer Science 2019-04-25 Xiongwei Wu , Qiang Li , Xiuhua Li , Victor C. M. Leung , P. C. Ching

This paper explores the physical-layer security in a small cell network (SCN) with cooperative cache-enabled small base stations (SBSs) in the presence of randomly distributed eavesdroppers. We propose a joint design on the caching…

Information Theory · Computer Science 2018-06-22 Tong-Xing Zheng , Hui-Ming Wang , Jinhong Yuan

To enhance the quality and speed of data processing and protect the privacy and security of the data, edge computing has been extensively applied to support data-intensive intelligent processing services at edge. Among these data-intensive…

Networking and Internet Architecture · Computer Science 2020-10-30 Yana Qin , Danye Wu , Zhiwei Xu , Jie Tian , Yujun Zhang

To meet the increasing demand for wireless capacity, future networks are likely to consist of dense layouts of small cells. The number of users in each cell is thus reduced which results in diminished gains from opportunistic scheduling,…

Networking and Internet Architecture · Computer Science 2014-04-01 Qing Wang , Balaji Rengarajan , Joerg Widmer

In this paper, we investigate the optimal caching policy respectively maximizing the success probability and area spectral efficiency (ASE) in a cache-enabled heterogeneous network (HetNet) where a tier of multi-antenna macro base stations…

Information Theory · Computer Science 2017-05-01 Dong Liu , Chenyang Yang

Data sponsoring is a widely-used incentive method in today's cellular networks, where video content providers (CPs) cover part or all of the cellular data cost for mobile users so as to attract more video users and increase data traffic. In…

Networking and Internet Architecture · Computer Science 2017-09-04 Haitian Pang , Lin Gao , Qinghua Ding , Lifeng Sun

With the rapid explosion of data volume from mobile networks, edge caching has received significant attentions as an efficient approach to boost content delivery efficiency by bringing contents near users. In this article, cache-enabled…

Information Theory · Computer Science 2020-08-13 Congshan Fan , Tiankui Zhang , Yuanwei Liu , Zhiming Zeng

Caching networks are designed to reduce traffic load at backhaul links, by serving demands from edge-nodes. In the past decades, many studies have been done to address the caching problem. However, in practice, finding an optimal caching…

Networking and Internet Architecture · Computer Science 2018-07-03 Elahe Rezaei , Hafez Eslami Manoochehri , Babak Hossein Khalaj

Existing multicasting schemes for massive content delivery do not fully utilize multicasting opportunities in delay tolerant content-oriented applications. In this paper, we propose a novel temporal-spatial aggregation-based multicasting…

Information Theory · Computer Science 2017-02-08 Jifang Xing , Ying Cui , Vincent Lau

A harvest-use-store power splitting (PS) relaying strategy with distributed beamforming is proposed for wirelesspowered multi-relay cooperative networks in this paper. Different from the conventional battery-free PS relaying strategy,…

Information Theory · Computer Science 2016-11-15 Zheng Zhou , Mugen Peng , Zhongyuan Zhao , Wenbo Wang , Rick S. Blum

Content delivery success in wireless caching helper networks depends mainly on cache-based channel selection diversity and network interference. For given channel fading and network geometry, both channel selection diversity and network…

Information Theory · Computer Science 2016-11-18 Seong Ho Chae , Wan Choi

Mobile edge computing provides users with a cloud environment close to the edge of the wireless network, supporting the computing intensive applications that have low latency requirements. The combination of offloading with the wireless…

Systems and Control · Electrical Eng. & Systems 2021-03-08 Ruoyun Chen , Hancheng Lu , Pengfei Ma

In this article, we investigate the cost-effective 5G-enabled vehicular networks to support emerging vehicular applications, such as autonomous driving, in-car infotainment and location-based road services. To this end, self-sustaining…

Networking and Internet Architecture · Computer Science 2017-09-07 Shan Zhang , Ning Zhang , Xiaojie Fang , Peng Yang , Xuemin , Shen