Understanding the Benefits of Open Access in Femtocell Networks: Stochastic Geometric Analysis in the Uplink

TL;DR

This paper develops an analytical framework using stochastic geometry to compare open and closed access modes in femtocell networks, focusing on uplink interference and outage performance.

Contribution

It introduces a comprehensive stochastic geometric analysis for uplink interference in femtocell networks and derives conditions and bounds for access mode performance comparison.

Findings

Analytical bounds for outage probability differences

Conditions for when open or closed access outperforms

Validation of the model with simulations

Abstract

We introduce a comprehensive analytical framework to compare between open access and closed access in two-tier femtocell networks, with regard to uplink interference and outage. Interference at both the macrocell and femtocell levels is considered. A stochastic geometric approach is employed as the basis for our analysis. We further derive sufficient conditions for open access and closed access to outperform each other in terms of the outage probability, leading to closed-form expressions to upper and lower bound the difference in the targeted received power between the two access modes. Simulations are conducted to validate the accuracy of the analytical model and the correctness of the bounds.