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1、Givingusersanedge:AflexibleCloudmodelanditsapplicationformultimediaSalekulIslamaa,Jean-CharlesGrégoirebb,aNorthSouthUniversity,Dhaka,BangladeshbInstitutnationaldelarecherchescientifique,Montréal,Québec,CanadaReceived11September2011.Revised30December2
2、011.Accepted15January2012.Availableonline24January2012.AbstractWepresenttheEdgeCloudarchitectureandexplorehowtheuser’sexperienceoftheInternetisenhancedthroughitsuse,bymovingdesktopfunctionalitywithinthenetwork,intheVoidenvironment.Weexplorehowthismod
3、elallowsustoexpandtherangeofbenefitsofusingtheInternetCloudmodel,especiallywhenitcomestomediaprocessingandusercustomization.Aprototypethattranscodesaudio/videostreaminsidetheCloudhasbeenimplementedandpresented.Theprototypeisdeployedintwodifferentenvi
4、ronments:inalocallabandintheAmazonEC2publicCloud.Wealsostudytheperformanceoftheprototypebyanalyzingtheinter-arrivaljitter.Highlights►DesktopfunctionsmoveintotheEdgeCloud,supportedbyourVoidmodel.►VoidextendsCloudservices,especiallyformediaprocessingan
5、dusercustomization.►Implementationofaprototypethattranscodesaudio/videostreamsinsidetheCloud.►Deploymentoftheprototypeintwoplaces:inourlabandintheAmazonEC2Cloud.►Inter-arrivaljitteranalysisshowsthatoverallperformanceisnotundulypenalized.KeywordsCloud
6、computing;EdgeCloud;Desktopvirtualization;Mediaprocessing;Transcoding;Jitteranalysis1.IntroductionCloudcomputingisacollectionofapplications,hardwareandsystemsoftwaredesignedtodeliverservicestoendusersovertheInternet[1].Thedatacenterthatdeploysthenece
7、ssaryhardwareandsoftwareiscalledaCloud.Cloudcomputingoffersawiderangeofservices,includingstorageanddifferentmodesofexploitation,i.e.Software/Platform/InfrastructureasaService(S/P/IaaS)[2].Throughvirtualizationtechnology,itisnowpossibletorunnotjustana
8、pplication,butalsoafullserverinsidetheCloud,therebyreducingthecostofthehardwarebaseinatypicaloneservice—oneservermodel.Beyondservervirtualization,cloudcomputinghasbeenusedontheuserside–mostlyinenterpriseenvironments–toprovideremoteaccesstodesktopsors
