Self-optimized Coverage Coordination in Femtocell Networks

TL;DR

This paper introduces a self-optimized power control scheme for femtocell networks that ensures indoor coverage while preventing leakage into outdoor macrocell areas, verified through analysis and simulation.

Contribution

It presents a novel power adjustment method based on signal and interference statistics, with an analytical expression for coverage leakage probability.

Findings

The scheme guarantees indoor femtocell coverage.

Coverage leakage into macrocell is minimized.

Simulation confirms effectiveness of the proposed method.

Abstract

This paper proposes a self-optimized coverage coordination scheme for two-tier femtocell networks, in which a femtocell base station adjusts the transmit power based on the statistics of the signal and the interference power that is measured at a femtocell downlink. Furthermore, an analytic expression is derived for the coverage leakage probability that a femtocell coverage area leaks into an outdoor macrocell. The coverage analysis is verified by simulation, which shows that the proposed scheme provides sufficient indoor femtocell coverage and that the femtocell coverage does not leak into an outdoor macrocell.