openepc_components_verticalhandovers

OpenEPC includes a full solution for Core Network Mobility Management, transparent to mobile devices and to the application platforms.

Core Network Mobility Management is realized using the following solutions:
  1.     Proxy Mobile IP (PMIP) and Generic Routing Encapsulation (GRE)
  2.     GTPv1/v2-C and GTP-U (GPRS Tunneling Protocol)
  3.     Dual Mobility Management (PMIP and GTPv2-C)
  4.     GTP-PMIP chaining
  5.     IP Flow Mobility (IFOM) and Multi-Access-Point Connectivity (MAPCON) capable in parallel with pre-Rel.12 functionality.

The Core Network Mobility supports also the SAE advanced bearer concepts, as well as multiple APNs. The solutions implemented feature great flexibility and easy adaptations even to other domains, as for example satellite radio or distributed radio and core network mobility management novel systems.

Using own R&D features, the Core Network Mobility Management enables truly seamless handovers between heterogeneous access networks and fast attachments. During such procedures the transparency characteristic is maintained by the following capabilities:

  1. IP Mobility by providing the same UE IP address over any of the Radio Access Technology. Accordingly applications do not need to be aware or signal for mobility, but would seamlessly continue to communicate.
  2. Zero-packet-loss handovers, which ensure through make-before-break mechanisms that all data is forward not only during normal intra-3GPP handovers, but also during inter-system vertical handovers.
  3. Single-token-authentication in 3GPP as well as non-3GPP wireless environments (e.g. the use of standard WPA-EAP-AKA mechanisms)
The OpenEPC implementation supports the latest 3GPP Rel.12 concepts, going beyond seamless vertical handovers and allowing for the client devices to be connected in parallel over multiple access networks. With the help of latest PGW (IFOM, MAPCON, NSWO) and ANDSF functionalities (ISMP, ISRP, IARP, HotSpot 2.0/WLANSP), data flows can be easily distributed over various access networks in both uplink and downlink.