Flexible cache-aided networks with backhauling

Abstract

Abstract-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 closedform 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.

Cache-enabled HetNets with Limited Backhaul: A Stochastic Geometry Model

“…Lp,1 are given as (27). The proof process of Corollary 3, Corollary 4 are similar to the Corollary 1, Corollary 2.…”

“…In [23][24][25][26], the authors conduct the backhaul-aware performance analysis of the cache-enabled cellular network based on a simplified backhaul model in which the backhaul delivery rate is set as the backhaul capacity. The work of [27,28] studied the average delivery rate, in which the backhaul rate was obtained by the average splitting of backhaul capacity among users. In [29], the authors analyzed the cache performance in terms of successful content delivery probability (SCDP) taking backhaul capacity assigment based on the delivery rate demand into account.…”