Flexible cache-aided networks with backhauling

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

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

Caching at the edge is a promising technique to cope with the increasing data demand in wireless networks. This paper analyzes the performance of cellular networks consisting of a tier macro-cell wireless backhaul nodes overlaid with a tier of cache-aided small cells. We consider both static and dynamic association policies for content delivery to the user terminals and analyze their performance. In particular, we derive closed-form expressions for the area spectral efficiency and the energy efficiency, which are used to optimize relevant design parameters such as the density of cache-aided small cells and the storage size. By means of this approach, we are able to draw useful design insights for the deployment of highly performing cache-aided tiered networks.

Domains: Computer Science [cs]; Signal and Image Processing; Engineering Sciences [physics]

Italo Atzeni, Marco Maso, Imene Ghamnia, Ejder Bastug, Merouane Debbah. Flexible cache-aided networks with backhauling. 18th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC 2017), Jul 2017, Sapporo, Japan. ⟨10.1109/SPAWC.2017.8227679⟩. ⟨hal-01777943⟩