Imperial College London
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ProfessorDenizGunduz

Faculty of Engineering, Department of Electrical and Electronic Engineering

Professor in Information Processing
 
 
 
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Contact

 

+44 (0)20 7594 6218d.gunduz Website

 
 
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Assistant

 

Ms Joan O'Brien +44 (0)20 7594 6316

 
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Location

 

1016Electrical EngineeringSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Tao:2019:10.1109/TCOMM.2019.2912384,
author = {Tao, M and Gunduz, D and Xu, F and Pujol, Roig JS},
doi = {10.1109/TCOMM.2019.2912384},
journal = {IEEE Transactions on Communications},
pages = {4724--4749},
title = {Content caching and delivery in wireless radio access networks},
url = {http://dx.doi.org/10.1109/TCOMM.2019.2912384},
volume = {67},
year = {2019}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Today’s mobile data traffic is dominated by contentoriented 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 of caching and delivery techniques in wireless radio access networks (RANs) with caches at all edge nodes (ENs) and user equipments (UEs). Three cache-aided RAN architectures are considered: RANs without fronthaul, with dedicated fronthaul, and with wireless fronthaul. It first reviews in a tutorial nature how caching facilitates interference management in these networks by enabling interference cancellation (IC), zero-forcing (ZF), and interference alignment (IA). Then, two new delivery schemes are presented. One is for RANs with dedicated fronthaul, which considers centralized cache placement at the ENs but both centralized and decentralized placement at the UEs. This scheme combines IA, ZF, and IC together with soft-transfer fronthauling. The other is for RANs with wireless fronthaul, which considers decentralized cache placement at all nodes. It leverages the broadcast nature of wireless fronthaul to fetch not only uncached but also cached contents to boost transmission cooperation among the ENs. Numerical results show that both schemes outperform existing results for a wide range of system parameters, thanks to the various caching gains obtained opportunistically.
AU  - Tao,M
AU  - Gunduz,D
AU  - Xu,F
AU  - Pujol,Roig JS
DO  - 10.1109/TCOMM.2019.2912384
EP  - 4749
PY  - 2019///
SN  - 0090-6778
SP  - 4724
TI  - Content caching and delivery in wireless radio access networks
T2  - IEEE Transactions on Communications
UR  - http://dx.doi.org/10.1109/TCOMM.2019.2912384
UR  - https://ieeexplore.ieee.org/document/8695087
UR  - http://hdl.handle.net/10044/1/70181
VL  - 67
ER  -
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