LTE Femtocells: System Design and Performance Analysis

Abstract

In this paper we consider a heterogeneous LTE network where femto cells are randomly deployed in a macro network according to the two models described in [1], namely dual-strip and NxN. Femto cells are modeled as closed cells, namely only group member UEs can be associated with the femto cells. Therefore, dominant interference may be experienced by non-member UEs that are in proximity of a closed cell and leave these UEs in outage. We show geometry performance in a practical deployment, and discuss an autonomous power control method, which allows to dramatically reduce the outage probability, and we evaluate a resource partitioning method between macro and femto cells that further improves the performance of macro users.