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Cache-Assisted Hybrid Satellite-Terrestrial Backhauling for 5G Cellular Networks
Kalantari, Ashkan; Fittipaldi, Marilena; Chatzinotas, Symeon et al.
2017In Proceedings of IEEE Global Communications Conference
Peer reviewed
 

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Keywords :
5G; content delivery; hybrid satellite-terrestrial
Abstract :
[en] Fast growth of Internet content and availability of electronic devices such as smart phones and laptops has created an explosive content demand. As one of the 5G technology enablers, caching is a promising technique to off-load the network backhaul and reduce the content delivery delay. Satellite communications provides immense area coverage and high data rate, hence, it can be used for large-scale content placement in the caches. In this work, we propose using hybrid mono/multi-beam satellite-terrestrial backhaul network for off-line edge caching of cellular base stations in order to reduce the traffic of terrestrial network. The off-line caching approach is comprised of content placement and content delivery phases. The content placement phase is performed based on local and global content popularities assuming that the content popularity follows Zipf-like distribution. In addition, we propose an approach to generate local content popularities based on a reference Zipf-like distribution to keep the correlation of content popularity. Simulation results show that the hybrid satellite-terrestrial architecture considerably reduces the content placement time while sustaining the cache hit ratio quite close to the upper-bound compared to the satellite-only method.
Disciplines :
Electrical & electronics engineering
Author, co-author :
Kalantari, Ashkan
Fittipaldi, Marilena
Chatzinotas, Symeon  ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
Vu, Thang Xuan  ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
Ottersten, Björn ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
External co-authors :
yes
Language :
English
Title :
Cache-Assisted Hybrid Satellite-Terrestrial Backhauling for 5G Cellular Networks
Publication date :
December 2017
Event name :
IEEE Global Communications Conference
Event organizer :
IEEE
Event place :
Singapore, Singapore
Event date :
from 4-12-2017 to 8-12-2017
Journal title :
Proceedings of IEEE Global Communications Conference
Peer reviewed :
Peer reviewed
European Projects :
H2020 - 645047 - SANSA - Shared Access Terrestrial-Satellite Backhaul Network enabled by Smart Antennas
Funders :
CE - Commission Européenne [BE]
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