Next Generation Mobile Networks

Just as the fixed networks evolved towards broadband all-IP Next Generation Networks (NGNs), the future of the wireless world lies in the Next Generation of Mobile Networks, as envisioned by the NGMN Alliance. The technical realization of this vision is governed by the 3GPP Evolved Packet System (EPS) specifications, formerly known as System Architecture Evolution (SAE). The EPS consists of the LTE for broadband access network technology and of EPC for the connectivity control core network operating above the LTE. EPC as wireless control core network enables also connectivity for other access network technologies such as e.g. WiMAX, CDMA2000, Wi-Fi or 3G networks. For this heterogeneous wireless environment it provides convergent mobility management, QoS, charging and security support and the integration for multiple application platforms.

Linking multiple wireless access network technologies to multiple application platforms requires a highly complex control platform. EPC provides seamless, secure and resource guaranteed subscription based wireless IP connectivity by adopting standard protocols and paradigms from the Internet world. Additionally, it provides the capabilities to push rules to access networks from any service platforms (be it IMS based on the Session Initiation Protocol (SIP), proprietary platforms or plain Internet) and receive event notifications for optimized service delivery support for a broad range of IP applications. For enabling a fast deployment of the novel all-IP technology of EPC, there will a need for research, rapid prototyping and testing to be done in the coming years. Fraunhofer FOKUS has already gained the expertise from developing reference implementations for emerging networking infrastructures with the SIP Express Router and the Open IMS Core. The launch of OpenEPC aims to push the research and development of EPC concepts for all-IP networks including the integration of new access network technologies, mobility management, resource management, security enhancements and network support for the development of future applications especially customized for the mass wireless broadband market.