MBB Service – Network Architecture

The Evolved Packet System mobile network consists of an Evolved Packet Core (EPC) network and an evolved universal terrestrial radio access network (E-UTRAN). The E-UTRAN ensures the connection of the user equipment, the resource allocation for the radio interface and the resource reservation when the mobile is switched from one cell to another. The EPC interconnects the access networks, provides the interface to the packet data network and controls the attachment of mobiles, the authorization to access the service and the establishment of bearers. The Control and User Plane Separation architecture consists of separating the functions of the control plane (CP) and user plane (UP) from the Serving Gateway and packet data network Gateway entities. This separation allows the flexibility of deployment of the EPC, the equipment that can be distributed or centralized, and an independent scaling between the functions of the CP and the UP.