Capacity optimization of an actual HetNet deployment with applications to 5G

Capacity optimization techniques in HetNets will be essential for the efficient deployment 5G networks. Network operators face important challenges estimating expected performance during the planning stage of the HetNet. In particular, it is difficult to accurately model and predict the performance of the network due to the complexity of actual load conditions, traffic patterns and user behavior. In this paper, we study and analyze the performance of an actual LTE-A HetNet deployment subject to different load and interference levels. As opposed to most of the published work in this area that relies on simulated results subject to simplified conditions, this work is based on measurements from a live HetNet. We study the performance of sectorization (i.e. cell splitting) and the application of interference cancellation techniques (e.g. Almost Blank Subframes - ABS) as a way to optimize network capacity. Key performance indicators such as signal-to-interference-plus-noise ratio, reference signal received power and downlink data rate are analyzed.