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Caching at the edge with Fountain Codes

Recayte, Estefania and Lazaro Blasco, Francisco and Liva, Gianluigi (2018) Caching at the edge with Fountain Codes. 9th Advanced Satellite Multimedia Systems Conference (ASMS), 10-12 Sept 2018, Berlin, Germany. (In Press)

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We address the use of linear randon fountain codes caching schemes in a heterogeneous satellite network. We consider a system composed of multiple hubs and a geostationary Earth orbit satellite. Coded content is memorized in hubs' caches in order to serve immediately the user requests and reduce the usage of the satellite backhaul link. We derive the analytical expression of the average backhaul rate, as well as a tight upper bound to it with a simple expression. Furthermore, we derive the optimal caching strategy which minimizes the average backhaul rate and compare the performance of the linear random fountain code scheme to that of a scheme using maximum distance separable codes. Our simulation results indicate that the performance obtained using fountain codes is similar to that of maximum distance separable codes.

Item URL in elib:https://elib.dlr.de/122220/
Document Type:Conference or Workshop Item (Speech)
Title:Caching at the edge with Fountain Codes
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Recayte, Estefaniaestefania.recayte (at) dlr.deUNSPECIFIED
Lazaro Blasco, FranciscoFrancisco.LazaroBlasco (at) dlr.deUNSPECIFIED
Liva, GianluigiGianluigi.Liva (at) dlr.deUNSPECIFIED
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Status:In Press
Keywords:fountain codes, caching, hegetoregeneous networks
Event Title:9th Advanced Satellite Multimedia Systems Conference (ASMS)
Event Location:Berlin, Germany
Event Type:international Conference
Event Dates:10-12 Sept 2018
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Communication and Navigation
DLR - Research area:Raumfahrt
DLR - Program:R KN - Kommunikation und Navigation
DLR - Research theme (Project):R - Vorhaben Multimedia Satellitennetze
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation
Deposited By: Recayte, Estefania
Deposited On:09 Jan 2019 10:05
Last Modified:31 Jul 2019 20:20

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