Cache-aided full-duplex small cells

Marco Maso (1) , Italo Atzeni (1) , Imene Ghamnia (2) , Ejder Bastug (2) , Merouane Debbah (2, 1)

1 Mathematical and Algorithmic Sciences Lab [Paris]
2 LANEAS - Large Networks and Systems Group

Caching popular contents at the edge of the network can positively impact the performance and future sustainability of wireless networks in several ways, e.g., end-to-end access delay reduction and peak rate increase. In this paper, we aim at showing that non-negligible performance enhancements can be observed in terms of network interference footprint as well. To this end, we consider a full-duplex small-cell network consisting of non-cooperative cache-aided base stations, which communicate simultaneously with both downlink users and wireless backhaul nodes. We propose a novel static caching model seeking to mimic a geographical policy based on local files popularity and calculate the corresponding cache hit probability. Subsequently we study the performance of the considered network in terms of throughput gain with respect to its cache-free half-duplex counterpart. Numerical results corroborate our theoretical findings and highlight remarkable performance gains when moving from cache-free to cache-aided full-duplex small-cell networks.

Domains: Engineering Sciences [physics]

Marco Maso, Italo Atzeni, Imene Ghamnia, Ejder Bastug, Merouane Debbah. Cache-aided full-duplex small cells. 15th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt 2017), May 2017, Paris, France. ⟨10.23919/WIOPT.2017.7959864⟩. ⟨hal-01784942⟩