# Flexible Cache-Aided Networks with Backhauling

## TL;DR

This paper evaluates the performance of cache-aided cellular networks with backhauling, deriving formulas to optimize deployment parameters for improved efficiency and insights.

## Contribution

It provides a comprehensive analysis of static and dynamic content association policies in cache-aided networks, including closed-form performance expressions and design optimization.

## Key findings

- Closed-form expressions for area spectral efficiency
- Closed-form expressions for energy efficiency
- Design guidelines for cache deployment and storage size

## 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 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.