Physical Cell Identifier Assignment in Dense Home Evolved NodeB Deployment

In this article, we are dealing with a mechanism of Physical Cell Identifier (PCI) assignment within LTE/LTE-A networks with more than 504 femtocells under one macro cell. After describing the problem we are concerned with, we propose two mechanisms that are able to assign collision-free PCI correctly and solve any confusion events that may arrive later. We also present simulation results based on our implemented algorithms that we propose to support our claims.