The Polaris Networks Home eNodeB Gateway (HeNB-GW), also referred to as Femtocell
Gateway (F-GW), is based on an innovative architecture that provides the control capabilities
necessary to manage large clusters of femtocells. The primary function of this gateway is to
enable simple, seamless, and highly secure access to subscribers as they roam between trusted mobile
networks and untrusted public networks. The HeNB-GW provides an aggregation or concentration
functionality for a group of Femtocell Access Points (FAPs). This preserves the hierarchical
architecture of the current generation of the Core Network as it does not expose a large number
of eNodeB base stations to the Core Network elements.