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Cloud Storage for Mobile Users Using Pre-Positioned Storage Facilities

Abstract : We propose a cloud-like file storage and sharing system designed for mobile users. Our system relies on a collection of strategically pre-positioned repositories within which files are replicated without relying on a conventional infrastructure-based network. Once stored in the first encountered repository , copies of the files are carried by the initial uploader or subsequent users and distributed among the other repositories. Having multiple copies available at different repositories thus increases the likelihood of finding the requested files in a timely fashion. Files can later be retrieved by other users at different locations. We are interested in processing user storage and retrieval requests before their deadlines expire. We design an algorithm to place the repositories such that they serve a maximum number of requests before their deadlines expire. We evaluate our system using mobility traces of San Francisco city buses. We show the impact of the number and placement of repositories on request success rate. We also show the benefits of mobility-leveraged file distribution.
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Submitted on : Friday, August 5, 2016 - 2:35:45 PM
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Benjamin Baron, Prométhée Spathis, Marcelo Dias de Amorim, Mostafa Ammar. Cloud Storage for Mobile Users Using Pre-Positioned Storage Facilities. ACM SMARTOBJECTS'16, Oct 2016, New York, United States. ⟨10.1145/2980147.2980151⟩. ⟨hal-01351583⟩



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