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1 Chaire Radio Flexible Alcatel-Lucent-Supélec Chaire Radio Flexible - Chaire Radio Flexible Alcatel-Lucent-Supélec 2 CWC - Centre for Wireless Communications University of Oulu

Abstract : —We consider the problem of caching in next gener-ation mobile cellular networks where small base stations SBSs are able to store their users- content and serve them accordingly. The SBSs are stochastically distributed over the plane and serve their users either from the local cache or internet via limited backhaul, depending on the availability of requested content. We model and characterize the outage probability and average content delivery rate as a function of the signal-to-interference-ratio SINR, base station intensity, target file bitrate, storage size and file popularity. Our results provide key insights into the problem of cache-enabled small cell networks.

Keywords : mobile cellular networks small cell networks limited backhaul stochastic geometry Index Terms—caching

Autor: Ejder Bastug - Mehdi Bennis - Mérouane Debbah -



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